In the realm of modern construction, user experience extends beyond the end-users to encompass those directly involved in the manufacturing process. Roofing making machines, including roof panel machines and roof roll forming machines, play a pivotal role in shaping this experience for manufacturers, operators, and maintenance personnel alike. By prioritizing usability, efficiency, and safety, these machines contribute to a positive user experience at every stage of production.

 

First and foremost, roofing making machines are designed with user-centric features aimed at simplifying operation and maximizing efficiency. Intuitive interfaces, ergonomic controls, and user-friendly software enable operators to quickly set up and run the machine with minimal training. This reduces the learning curve and empowers operators to optimize production workflows, resulting in higher productivity and throughput.

 

Furthermore, roofing making machines prioritize safety to ensure a secure working environment for operators and maintenance personnel. Built-in safety mechanisms, such as emergency stop buttons, interlocks, and protective guards, mitigate the risk of accidents and injuries during operation. Additionally, advanced sensors and monitoring systems continuously assess machine performance, alerting users to any potential hazards or maintenance issues. By prioritizing safety, these machines instill confidence in users and foster a culture of workplace well-being.

 

Moreover, roofing making machines are engineered for reliability, minimizing downtime and disruptions to production schedules. Robust construction, quality components, and rigorous testing procedures ensure consistent performance and longevity. This reliability instills trust in users, knowing that the machine can be relied upon to deliver consistent results day in and day out.

 

In addition to operational efficiency and safety, roofing making machines contribute to a positive user experience through their versatility and adaptability. With customizable settings and modular design features, these machines can be tailored to meet the specific needs of different production environments and roofing applications. Whether it's adjusting roll forming parameters or switching between different profiles, users have the flexibility to adapt the machine to changing requirements, enhancing overall efficiency and satisfaction.

 

Furthermore, roofing making machines incorporate feedback mechanisms to gather insights from users and continually improve performance. Manufacturers actively solicit feedback from operators and maintenance personnel, seeking input on usability, functionality, and reliability. This feedback loop enables iterative enhancements and refinements, ensuring that future iterations of the machine better meet the evolving needs of users.

 

In conclusion, roofing making machines play a vital role in shaping the user experience in the manufacturing sector. By prioritizing usability, efficiency, safety, and adaptability, these machines empower operators and maintenance personnel to maximize productivity while ensuring a secure and satisfying working environment. As technology continues to advance, manufacturers must continue to prioritize user experience, driving innovation and improvement in roofing making machines for the benefit of all stakeholders involved.

Because of the high hardness, wear resistance and corrosion resistance, the tungsten carbide slitting knifes which made by powder metallurgic method are widely used for the cutting of non-ferrous metal, paper, chemical fiber, graphite and plastic.

The components of lcknife tungsten carbide are WC(hard phase) and cobalt (binder phase). The physical properties of alloy depend on the grain size of WC and the percentage of hard phase and binder phase, we have dozens of material grades for your different applications.

 

Introduction

With the continuous advancement of global industrialization, the demand for process pumps in the chemical industry continues to grow. As a critical fluid transfer device in chemical processes, chemical process pumps play a vital role in maintaining production continuity, improving efficiency, and ensuring safety and environmental compliance. This article will explore the classification, key features of current chemical process pumps, and the latest trends in market demand.

 

 

 

Classification of Chemical Process Pumps and Standards

1. Classification by Working Principle

   - Centrifugal Pumps: Rely on the centrifugal force generated by a high-speed rotating impeller to transfer the fluid. These are the most common type of process pumps in the chemical industry, suitable for low-viscosity fluids with minimal particulates.

   - Positive Displacement Pumps: Including gear pumps, screw pumps, and plunger pumps, these pumps transfer fluid through volume changes in the pump chamber, making them suitable for high-viscosity fluids or applications requiring precise metering.

   - Magnetically Driven Pumps: Utilize magnetic couplings to transfer power, providing strong sealing capabilities. They are ideal for handling toxic, flammable, and explosive hazardous chemical fluids.

 

2. Classification by Material

   - Metallic Pumps: Such as stainless steel and alloy pumps, are primarily used for transporting highly corrosive acidic and alkaline media. The choice of metallic material depends on the corrosiveness and temperature requirements of the medium.

   - Non-Metallic Pumps: Such as fluoroplastic and ceramic pumps, offer superior corrosion resistance and are used for handling highly corrosive fluids, particularly in specialized applications where metallic pumps may not suffice.

 

3. Classification by Drive Type

   - Electric Pumps: Driven by electric motors, these are the most common type of process pumps, suitable for various conditions, especially in continuous chemical operations.

   - Pneumatic Pumps: Powered by compressed air, they are typically used in flammable or explosive environments, offering higher safety as they do not require electricity.

   - Hydraulic Pumps: Driven by hydraulic systems, they are suitable for high-pressure applications, often used in processes requiring high delivery pressure.

4. Classification by Installation Method

   - Horizontal Pumps: The pump shaft is installed horizontally, suitable for large spaces with easy maintenance, commonly found in large chemical plants.

   - Vertical Pumps: The pump shaft is installed vertically, ideal for limited space, usually used for liquid transfer from underground tanks or deep wells.

 

2. Key Features of Chemical Process Pumps

1. Material Selection and Corrosion Resistance

   Chemical process pumps are typically made from high-performance materials to withstand various complex chemical media. Common materials include stainless steel, Hastelloy, and titanium alloys, known for their excellent corrosion resistance, allowing them to operate long-term in harsh environments like strong acids and alkalis. Additionally, non-metallic materials such as fluoroplastics are widely used in specialized applications, offering exceptional corrosion resistance and wear properties.

 

2. High Efficiency and Energy Conservation

   As energy conservation becomes a global trend, the efficiency of chemical process pumps has garnered significant attention. Modern process pumps, optimized in design and equipped with high-efficiency motors, effectively reduce energy consumption. In large-scale chemical facilities, these efficiency improvements not only lower operational costs but also reduce carbon emissions, aligning with the development direction of green chemistry.

 

3. Reliability and Durability

   Operating in harsh industrial environments, chemical process pumps require high reliability and durability. Modern pumps often incorporate advanced sealing technologies and wear-resistant designs to extend service life and reduce maintenance frequency. Additionally, intelligent monitoring systems can monitor operational status in real-time, providing early warnings for potential failures, further enhancing system reliability.

 

 

3. Market Demand Analysis

1. Global Market Growth

   According to market research reports, the global chemical process pump market is expected to maintain stable growth in the coming years. The Asia-Pacific region, driven by accelerated industrialization, especially in emerging markets like China and India, is experiencing the fastest growth in demand for chemical process pumps. In contrast, the European and North American markets focus primarily on technological upgrades and efficiency improvements, with high demand for high-performance, energy-efficient chemical pumps.

 

2. Green Chemistry and Sustainable Development

   Stricter environmental regulations are accelerating the transition of chemical companies toward green chemistry, creating new market opportunities for energy-efficient chemical process pumps. Many companies are seeking low-energy, high-efficiency pump products to reduce their carbon footprint and comply with global environmental standards. Simultaneously, the concept of a circular economy is driving the development of the chemical pump market, requiring pumps with longer lifespans and higher resource utilization efficiency.

 

3. Regional Market Demand Differences

   There are significant differences in the demand for chemical process pumps across different regions. The Asia-Pacific region, with its large-scale new projects, focuses on cost-effectiveness and bulk procurement. The European market places greater emphasis on technological advancement and environmental compliance, preferring high-efficiency, energy-saving pump products. The North American market, while maintaining high standards, is gradually moving towards smart equipment, with increasing demand for automation and intelligent monitoring systems.

 

Conclusion

As the global chemical industry evolves, the demand for chemical process pumps is becoming increasingly diversified. From material selection to energy efficiency improvements and regional market differences, the product features of chemical process pumps are closely linked to market demand. For chemical companies, selecting the right process pump can not only enhance production efficiency but also meet environmental requirements, helping them stay competitive in a rapidly changing market.

 

References

1. Market Research Report: "Global Chemical Process Pump Market Analysis," 2023 Edition.

2. Industry Analysis Article: "Technological Innovations and Applications of Chemical Process Pumps," published in 2022.

3. Academic Research: "Driving Factors of Chemical Process Pump Demand Growth in Emerging Markets," 2021.

4. Industry Trends Report: "Market Opportunities in Green Chemistry and Sustainable Development," 2023.

5. Internal Company Data: "Regional Market Demand Analysis for Chemical Pumps," Q2 2024 Report.

Introduction

Ebullated pumps also called boiling pump，which play a crucial role in the chemical industry, especially under high-temperature and high-pressure conditions. With the growing industrial demand, the design and manufacturing technology of boiling pumps are continuously evolving to meet stricter operational requirements. This article will introduce the structural characteristics, design advantages, typical applications, current market trends, and cutting-edge manufacturing technologies of ebullated pumps.

 

 

1. Structural Features of Ebullated Pumps

Ebullated pumps are typically used to transport high-temperature liquids, and their design must withstand extreme temperatures and pressures. Key structural features include:

 

High-Temperature Resistant Materials: High-performance alloy steel, stainless steel, or titanium alloys are commonly used for their excellent heat and corrosion resistance, allowing long-term operation under harsh conditions.

Double-Casing Design: To enhance structural strength and safety, ebullated pumps usually feature a double-casing design, effectively preventing leakage due to casing rupture.

Efficient Impellers: The impeller design directly impacts the pump's efficiency. Modern Ebullated pumps often use fluid dynamically optimized impellers to minimize energy loss and improve overall efficiency.

 

2. Design Features of Ebullated Pumps

Ebullated pump designs focus on efficiency, stability, and safety, with key features including:

 

Precision Mechanical Seals: To prevent leakage of high-temperature liquids, Ebullated pumps typically use high-performance mechanical seals that can operate for extended periods under high temperature and pressure while being easy to maintain.

Automatic Adjustment Systems: Modern Ebullated pumps are equipped with automatic adjustment systems that regulate flow and pressure according to real-time conditions, ensuring process stability and safety.

Modular Design: Modular design simplifies maintenance and replacement and allows for customized configurations according to different application scenarios.

 

3. Applications of Ebullated Pumps

Ebullated pumps are widely used in the following fields:

 

Petrochemical Industry: Used for transporting high-temperature reactive materials, particularly in refining and distillation processes, ebullated pumps effectively handle liquid media under high temperature and pressure.

Power Industry: In power plants, ebullated pumps are used to transport high-temperature boiler feedwater, ensuring the safe operation of power equipment.

Metallurgical Industry: In metallurgy, ebullated pumps are used to transport high-temperature molten metals or smelting waste, capable of withstanding extreme working conditions.

 

4. Market Trends and Cutting-Edge Technologies

Market Trends

Growing Demand: The global demand for efficient, durable ebullated pumps continues to grow, especially in the Asia-Pacific region, driven by accelerated industrialization, with significant demand in the petrochemical and power industries.

Green and Sustainable: With increasing environmental requirements, energy-efficient ebullated pumps are gaining market favor. Many manufacturers are developing more energy-saving pump products to meet global environmental standards.

 

Cutting-Edge Manufacturing Technologies

3D Printing: Cutting-edge 3D printing technology is gradually being applied in the manufacturing of ebullated pumps, particularly in producing customized pump bodies and complex structural components. This technology allows for more precise manufacturing and shorter production cycles.

Intelligent Monitoring Systems: Ebullated pumps integrated with smart sensors can monitor operating conditions in real-time, providing instant feedback to help prevent failures and optimize operational efficiency.

 

5.Huasheng's Research on Ebullated Pumps

 

Huasheng Pumps & Valves undertook the "Residue Oil Hydrogenation Ebullated Pump Development" project, a major equipment localization project of Sinopec Headquarters in 2018. The company conducted research and development based on the operating parameters of the 2 million tons/year liquid diesel hydrogenation unit of Sinopec Zhanjiang Dongxing Petrochemical. Its rated flow rate is 835m3/h, head is 79m, temperature is 410°, and wet motor power is 250kW. The product has been delivered for on-site use, breaking the foreign monopoly on this type of product and effectively reducing the manufacturing cost of boiling pumps.

 

 

Conclusion

Ebullated pumps are essential in high-temperature, high-pressure processes in industries like chemical, energy, and metallurgy. As market demand grows and technology advances, innovations in the design and manufacturing of ebullated pumps are driving the industry forward. Choosing the right ebullated pump can not only enhance production efficiency but also meet environmental requirements, helping companies maintain a competitive edge in a rapidly evolving market.

 

References

Industry Report: "Global Boiling Pump Market Analysis," 2023 Edition.

Technical Article: "Design and Application of Boiling Pumps," published in 2022.

Research Report: "Application of 3D Printing in Industrial Pumps," 2021.

Market Trend Report: "Impact of Green and Sustainable Development on Industrial Pumps," 2023.

Hydrocracking bubbling bed technology is an advanced petroleum refining process specifically designed for the deep processing of heavy oil and solid-containing petroleum products. As global conventional crude oil resources gradually deplete, and the trend toward heavier crude oil becomes increasingly evident, hydrocracking bubbling bed technology is playing an increasingly critical role in the energy industry. This technology addresses the dual challenge of global energy shortages and the need for improved energy efficiency, particularly in the context of rapid economic growth in developing countries and the resulting surge in energy demand. Below is a detailed explanation of the hydrocracking bubbling bed process, its key equipment, and industrial applications.

1. Working Principle of Hydrocracking Bubbling Bed Technology

Hydrocracking bubbling bed technology is based on hydrocracking reactions aimed at breaking down large molecular organic compounds in heavy oil and solid-containing petroleum products into smaller, lighter hydrocarbons through the combined action of catalysts and hydrogen. This process improves oil quality, reduces sulfur, nitrogen, and oxygen impurities, and enhances the fluidity and combustion properties of the final product. The core of hydrocracking lies in using hydrogen under high-temperature and high-pressure conditions to cleave large molecules into smaller ones, ultimately yielding high-quality light oil products.

In a bubbling bed reactor, hydrogen is injected at the bottom, mixing with the heavy oil and catalyst to form a fluidized, bubbling state. Due to the extended contact time between the catalyst and the feedstock in this gas-liquid-solid three-phase system, efficient hydrocracking reactions can occur. This technology is especially effective in processing high-sulfur, high-nitrogen, and other impurity-laden feedstocks while significantly improving yield and economic performance.

2. Role of Circulation Pumps (Ebullating Pumps)

Circulation pumps, also known as ebullating pumps, are essential components of the hydrocracking bubbling bed system. Their primary function is to ensure the continuous circulation of feedstock and catalyst within the reactor, maintaining uniform temperature distribution and a stable reaction environment. By circulating the feedstock, the pump ensures thorough contact between the oil and catalyst, thus improving reaction efficiency and preventing localized overheating or catalyst deactivation.

Additionally, circulation pumps help control the reactor's pressure and flow, ensuring the continuous flow of the oil feed. Given the harsh operating conditions in hydrocracking (high temperatures, high pressures, and the presence of solid particles), these pumps must be designed with high resistance to wear, corrosion, and thermal stress. They must also withstand prolonged exposure to extreme conditions while ensuring system stability and efficiency.

3. Process Advantages and Application Fields

Compared to traditional catalytic cracking processes, hydrocracking bubbling bed technology offers several notable advantages:

• Wide Range of Feedstocks: This technology can process a variety of low-quality feedstocks such as heavy oil, residual oil, kerosene, and solid-containing petroleum products, offering strong adaptability.
• High Product Yield: The hydrocracking process efficiently breaks down heavy molecules, increasing the yield of light oil products and resulting in higher overall output than conventional methods.
• Environmental Benefits: The hydrocracking process effectively removes harmful impurities such as sulfur and nitrogen, reducing the pollutant content in the final product and meeting stricter environmental regulations.
• Improved Energy Efficiency: By converting heavy components into more combustible light oil products, hydrocracking significantly enhances energy utilization efficiency.

 

The application conditions of hydrogenation boiling pumps are complex, the medium temperature is as high as 500℃, the inlet pressure is 30MPa, and the medium is highly corrosive. At present, the technology of this product is only mastered by a few countries, and there are very few factories that can produce it, and it is expensive. Fortunately, Huasheng is one of the very few factories that can produce this pump.

In 2018, Huasheng Pumps and Valves undertook the "Residue Oil Hydrogenation Boiling Pump Research and Development" project, a major equipment localization project of Sinopec Headquarters. The company relies on the operating parameters of Sinopec's 2 million tons/year liquid diesel hydrogenation unit for research and development. Its rated flow rate: 835m³/h, head: 79m, temperature: 410℃, wet motor power: 250kw. It took 4 years, and the product was delivered in 2022 and is currently running well. The success of the project has enabled China to break the foreign monopoly on hydrogenation boiling pump technology and reduce costs.

As global energy structures shift and environmental requirements tighten, hydrocracking bubbling bed technology presents significant growth potential. Key future development trends include:

• More Efficient Catalysts: Research and development of more efficient, longer-lasting catalysts will further improve reaction efficiency and product yield.
• Intelligent Control Systems: The application of advanced automation and data analysis technologies will optimize the reaction process, reduce energy consumption, and enhance system stability.
• Expanded Application Range: With ongoing technological advancements, hydrocracking bubbling bed technology is expected to extend into other unconventional resource processing areas, such as coal-to-liquids and oil sands extraction.

The development and application of hydrocracking bubbling bed technology provide an effective solution for the utilization of heavy oil and solid-containing petroleum products. This technology offers a viable path for addressing the depletion of conventional oil resources while meeting the growing demand for energy. Circulation pumps, as a critical component of the process, play a pivotal role in ensuring the success of the entire operation. Looking ahead, as the technology continues to evolve, hydrocracking bubbling bed technology will remain a key player in global energy production and refining, contributing to the sustainable development of the energy sector.

 

The double-tub washing color fastness tester is used for washing color fastness, dry cleaning color fastness, rinsing color fastness, detergent efficiency and other washing and dry cleaning color fastness tests of various textiles, and evaluates the washing color fastness performance of textiles.

Main parameters:

1. Test container position: (12+12)×2.

2. Rotation speed: 40±2rpm.

3. Washing cup: 500ml and 1200ml, each tank contains 24 cup slots (12 large and 12 small), to meet different test requirements

4. Temperature control can reach 98℃.

Applicable standards:

ISO105M&SC4A, 5, 37, P3BIWSTM7, 115, 177, 193, 240, 241, AATCC2, 3, 28, 61, 62, 86, 132, 151, 190,BS1006NEXT2, 3, 5

C4A Color fastness to washing detergents

C5 Color fastness to dry cleaning

C10A Color fastness to oxidative bleaching damage

C22 Color fastness to residual staining in toilets

C23 Color fastness to toilet solvents

C37 Color fastness to chlorinated water and swimwear

P38 "MST" washing stability

BS EN ISO 105C01-C05 Color fastness to washing

BS EN ISO 105C06 Color fastness to household and commercial laundry

BS EN ISO 105C08 Color fastness to phosphate-free household and commercial laundry

BS EN ISO 105C09 Color fastness to household and commercial laundry - Oxidative bleaching using low temperature bleach activators

BS EN ISO 105D01 Color fastness to 1,000 washes

BS EN ISO 105E03 Color fastness to chlorinated water

BS EN ISO 105X05 Color fastness to organic solutions

1. Folding thickness of fabric Fabrics are divided into thicknesses, and clothing made from fabrics also has thicknesses; this thickness is expressed by the folding amount, so the folding amount needs to be considered when making patterns. The folding amount indicates the degree of folding thickness of the fabric, which is present in any garment. The folding amount is just different in size. The thicker the fabric, the greater the folding amount; the thinner the fabric, the smaller the folding amount. Example: The folding amount of denim jeans W: 1.2cm K: 0.6cm H: 1.2cm SB: 0.6

2. Shrinkage of fabrics

There are two types of clothing fabrics: natural fabrics and chemical synthetic fabrics

a: Natural fabrics: woven from natural fibers, mainly plants, such as cotton and linen, which have a large shrinkage rate, and animals, such as silk, wool, and leather, which have a small shrinkage rate.

b: Chemical synthetic fabrics: The main ones woven from chemical synthetic fibers include polyester, nylon, acrylic, chlorine fiber, chlorine fiber, etc., which do not shrink.

(The other kind of fabric is a mixture of natural and chemical materials, such as polyester and cotton, with low shrinkage)

Due to the characteristics of natural fabrics, natural fabrics shrink after washing. Cotton and linen fabrics shrink the most. In daily life, especially casual clothing, most pure cotton fabrics are used, so the shrinkage rate must be considered when producing paper patterns. .

No shrinkage: the size of a before washing is m and the size after washing is n, then a=m-n/m×100%

Since the fabric has two yarn directions: transverse and longitudinal, there are also two shrinkage rates:

a vertical = m vertical - n vertical / m vertical × 100%

a horizontal = m horizontal - n horizontal / m horizontal × 100%

Generally speaking, when making a paper pattern, the shrinkage rate of the fabric will be informed. If we don't know the shrinkage rate of this fabric, we can use the following two methods to calculate the shrinkage rate.

a: Don't consider the shrinkage rate first, directly make a paper pattern of the middle code to make a board, and then take it to the washing plant to wash (note that the washing method must be the same as the washing method of the bulk goods). After washing, measure the board again, compare it with the finished product specifications, subtract more, and add less. This way, the board is more accurate, but it takes too long to make the board.

b: Take a piece of fabric for bulk goods, sew the edges around, and use a pen to draw a square in the middle of the cloth with a side length of 40cm, two sides parallel to the fabric grain, and two sides perpendicular to the fabric grain 40x40cm, then wash it. The washing method is the same as the bulk goods. After washing, measure each side of the square, and it becomes 36x36cm data.

Reuse a=m-n/m×100%

a vertical 40-38/40x100%=8%

a horizontal=40-36/40x100%=10%

Therefore, the shrinkage rate of the fabric is: vertical: 5% horizontal: 10%.

However, considering the fixing effect of the seams, the shrinkage rate of clothing is actually slightly smaller, so it should be determined according to the specific situation.

The purpose of calculating a longitudinal and a transverse is to calculate the length with a longitudinal and the circumference with a transverse to calculate the shrinkage rate in order to calculate the data K before washing. From the shrinkage rate formula, it can be deduced that K=?

Furthermore, it can be deduced that: K longitudinal=e longitudinal/1-a longitudinal (to calculate the length of clothing)

K transverse=e transverse/1-a transverse (to calculate the circumference of clothing)

For the parts where the vertical and horizontal are connected, the shrinkage rate is taken as the average value, such as the fabric patterns of the waist and the waistband are perpendicular to each other.

Example: w: 66cm-68.6cm (shrinkage rate: vertical 3%/horizontal 4%) SL: 55.9-57.5cm.

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1. Each time you turn on the instrument and start a new set of tests, you must press the reset button to restart the instrument, otherwise the data processing will be incorrect.

2. When the instrument is reset and the zero key is pressed, it contains the function of automatically clearing (peeling) the force sensor. Please note that when starting the instrument, the upper clamp should not be subjected to any additional force except its own weight, otherwise, inaccurate peeling will lead to inaccurate testing.

3. The instrument input setting parameters should be performed before a set of tests begins, otherwise, data processing errors will occur.

4. The instrument has been calibrated for the strong force indication before leaving the factory. Non-professional calibration and maintenance personnel are not allowed to calibrate it arbitrarily, otherwise the instrument will cause inaccurate force measurement.

5. The force sensor can be cleared while waiting for the test and calibrating the display status. After pressing the zero key, wait 2 seconds before starting the test.

6. In the instrument automatic control program, there is a test value judgment program, which will automatically delete the obviously wrong test data (including the measured value after the sensor zero point drifts seriously and the impact strength value); please note that if the instrument automatically deletes the current test value for many times in a row, it is generally because the reset value has been offset. You should press the reset key to reset it again before continuing the test.

7. The maximum allowable setting of the sample value and the number of sample varieties of this machine are limited to 255 times. At the same time, the number of samples × the number of samples <500, the computer automatically determines whether it is a memory overflow and prompts with text on the LCD screen.

8. If you want to print the test curve, you should print it after the current test is completed, that is, only print the current test curve. If this test is the last test of this group, print the curve first and then print the report.

9. Note that the force on the upper clamp should be less than the full scale value of the instrument. Avoid the impact of the upper clamp, otherwise it is easy to damage the force sensor.

10. Clean and maintain the instrument well, and lubricate the screw and guide rod in time.

11. Regularly calibrate the instrument to ensure the accuracy of the instrument's measurement value.

12. Non-professional maintenance and calibration personnel are not allowed to dismantle the instrument. The measurement performance must be calibrated after each dismantling to avoid instrument inaccuracy.

13. If there is a sudden failure during operation, emergency stop must be performed and restart must be performed.

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Take the fabric stretching function as an example:

1. Operation adjustment

(1) Clamping distance adjustment

Before the instrument tensile test, the clamping distance between the upper and lower clamps must be adjusted to be consistent with the set value. The specific adjustment method is:

①. Press the up button on the control panel to make the crane rise. After rising a certain distance, press the stop button to stop the crane.

②. According to the required length of the sample, move the lower limit block to the position of the corresponding hole (or indicator arrow) on the limit rod and tighten it. The limit rod is drilled with a lower limit positioning stop hole for positioning the lower limit collision block. Each hole indicates the clamping distance of the clamp to be tested.

③. Press the down button to make the crane descend to the lower limit position and stop automatically. Use a steel ruler to measure the distance between the upper and lower clamps. If there is a slight difference with the clamping distance requirement, the height of the upper limit collision nut can be adjusted (thread adjustment) to finally make the distance between the upper and lower clamps consistent with the clamping distance requirement.

④. According to the adjusted distance between the upper and lower clamps, check whether it is consistent with the set clamping distance. If not, repeat the above steps until it meets the requirements.

(2) Selection of pre-tension clamps

According to the specifications of the specimen, calculate the pre-tension value required for clamping the specimen according to the test standard, and then select the corresponding pre-tension clamp. (3) Test parameter setting According to the standard requirements, enter the value as prompted by the LCD screen. (4) Adjustment of stretching speed When testing a specimen, prepare a number of additional specimens more than the specified number of test strips for preliminary testing to determine the stretching speed.

(3) Test parameter setting

According to the standard requirements, enter the value as prompted by the LCD screen.

(4) Adjustment of stretching speed

When testing a specimen, prepare a number of additional specimens more than the specified number of test strips for preliminary testing to determine the stretching speed.

2. Clamping the specimen specimen clamp

According to the customized function configuration, take the corrugated clamp for fabric stretching function as an example:

a. Rotate the clamp handle to loosen the corrugated clamp;

b. Insert one end of the test strip from the bottom of the upper clamp into the opened upper clamp clamping mouth, and keep the specimen and the jaws straight:

c. Rotate the handle to clamp it;

d. Loosen the lower clamp handle to open the lower clamp jaws;

e. Pass the other end of the test strip clamped in the upper clamp through the lower clamp jaws, and clamp the strip through the jaws with the selected pre-tension clamp so that the specimen is straightened under the action of the pre-tension clamp;

f. Rotate the lower clamp handle to clamp the lower end of the specimen, and then remove the pre-tension clamp, and the specimen clamping is completed.

3. Tensile test

Press the start button on the base, the crane rises, and stretches the sample clamped between the upper and lower clamps. After breaking, the crane automatically returns to its original position, and the instrument automatically records and displays the maximum strength value (peak strength value), tensile length, elongation, breaking time and test number at the time of breaking.

4. Check and process the test results

①. Check the fracture position of the sample. If the distance between the fracture and the upper and lower clamp jaws is s5mm, cancel the test value and re-test. Press the delete key, and the instrument will process the test value accordingly (minus one, the test is invalid).

②. If the fracture position of the sample is normal; the test is valid, the strength and elongation curve of the test can be printed at this time, and then check the test number value. If the sample display value (the number of tests for this type of sample) is consistent with the set value, it indicates that the test of this type of sample is completed. Replace the new sample and continue the test; if the display value is less than the set sample value, repeat the previous action and continue the test on the strip sample of this type of sample.

5. Printing test report

After the sample has been tested for the required number of times, that is, when the sample display value is consistent with the set sample value, it means that the test of this sample has been completed and it can be printed at this time. When printing, press the print key, select the print format, and then print the test report after confirmation. Before printing, ensure that printing paper should be added to the printer; in addition, the printer's online indicator (ONLINE) must be on. After printing, you can continue to test, and press the print key later to print. If you need to perform a new test after printing, you need to press the reset key and then test again. If you need to print repeatedly, press the print key again after printing.

6. Display the test results directly through the LCD screen on the display panel.

7. After one set of samples is tested, press the reset button to restart the instrument and clear the existing stored data in the computer so that it can start working again.

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There are many types of shoe material testing equipment, which are used to test various properties of shoe materials. The following are some common shoe material testing equipment:

Toe bending test machine: used to test the bending resistance of finished shoes and evaluate the bending resistance of shoe materials.

Upper leather stretch test machine: simulates the compression, stretching and bending of the upper during walking after wearing shoes.

Leather wear test machine: suitable for the wear resistance test of wear-resistant materials used on the heels of leather shoes.

Bending test machine: used to connect and bend test pieces of a certain size, and observe the degree of cracking and damage of the test pieces after a certain number of bends.

Leather shoe shank stiffness tester: suitable for the determination of the longitudinal bending stiffness of the leather shoe shank.

Safety shoe compression tester: suitable for steel toe compression and steel mid-plate puncture resistance test of all types of safety shoes.

Anti-puncture bending test machine: test the bending resistance of safety insoles.

Leather Flex Tester: Determines the material's resistance to cracking or flexing at a bend crease.

Rubber resilience impact tester: measures the impact resistance of elastic materials and soft porous materials.

Sole static anti-slip tester: tests the static anti-slip properties of outsoles, high-heeled shoe heels and related outsole materials.

Testing machine double-arm tensile machine: used for various materials for tensile, compression, bending, shearing, bonding strength, peeling, tearing and other tests, suitable for a variety of materials.

Low-temperature sole bending tester: examines the bending resistance of the sole under low temperature environment.

Whole shoe wear tester: suitable for testing the wear resistance of finished shoe soles and molded soles (sheets).

Heel impact tester: simulates the ability of women's high-heeled shoes to resist sudden impact when wearing and walking.

Safety shoe withstand voltage tester: tests the voltage value that the sole or insulating shoe material can withstand.

Water vapor permeability tester: measures the water vapor permeability of leather or synthetic materials used for shoes or personal protective equipment.

Anti-yellowing chamber detector: simulates sunlight to measure anti-yellowing performance.

Rubber soles and shoes ozone aging tester: Evaluate the weather resistance of rubber soles and shoes in ozone environment.

These equipments cover a variety of performance tests such as bending resistance, wear resistance, impact resistance, puncture resistance, voltage resistance, water vapor permeability, etc. of shoes, and are indispensable tools in shoe production and quality control.

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