Measuring shrinkage is one of the common testing methods for textile testing, but practice has proven that the shrinkage of textiles is affected by many factors. Therefore, understanding the factors that affect textile shrinkage has positive significance for the scientificity and accuracy of measuring shrinkage.

Common factors that affect textile shrinkage include:

1.Fiber composition: Compared with synthetic fibers (such as polyester, acrylic), natural plant fibers (such as cotton, linen) and plant regenerated fibers (such as viscose) are prone to moisture absorption and expansion, so the shrinkage rate is larger, while wool is due to the scale structure on the fiber surface. It is easy to felt, which affects its dimensional stability.

2.Production and processing process: Since the fabric will inevitably be stretched by the machine during the dyeing, printing, and finishing processes, tension exists on the fabric. However, the fabric can easily release the tension when exposed to water, so we will Noticed fabric shrinkage after washing. In actual processes, we generally use pre-shrinking to solve this problem.

3.Fabric structure: Generally speaking, the dimensional stability of woven fabrics is better than that of knitted fabrics; the dimensional stability of high-density fabrics is better than that of low-density fabrics. Among woven fabrics, the shrinkage rate of plain weave fabrics is generally smaller than that of flannel fabrics; while among knitted fabrics, the shrinkage rate of plain knitted fabrics is smaller than that of ribbed fabrics.

4. Washing and care process: Laundry care includes washing, drying, and ironing. Each of these three steps will affect the shrinkage of the fabric. For example, the dimensional stability of hand-washed samples is better than that of machine-washed samples, and the washing temperature will also affect its dimensional stability. Generally speaking, the higher the drying oven temperature, the worse the stability. The drying method of the sample also has a relatively large impact on the shrinkage of the fabric.

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Recently, a client from the Middle East visited our factory and intended to purchase an aluminum extrusion press for manufacturing door and window materials.

                    

             The similarities and differences between copper extrusion and aluminum extrusion

Aluminum is one of the most common materials in our daily lives and an essential metal in various industries. However, in addition to aluminum, copper is also a widely used metal due to its excellent electrical and thermal conductivity, corrosion resistance, and other favorable properties. Copper has broad applications across multiple industries, such as:

 

Electrical and Electronics: Wires, cables, transformers, motors, and electronic components.

Construction: Piping systems, electrical wiring, and copper conductors.

Automotive: Electrical systems, radiators.

Industrial Equipment: Heat exchangers, valves, pumps, bearings, and gears.

Telecommunications: Cables.

Energy: Solar panels, generators.

Healthcare: Medical devices, surgical instruments, door handles, and handrails due to its antibacterial properties.

Both aluminum and copper are produced through extrusion processes, where pressure is applied to metal billets, forcing them through molds to form the desired shapes. While the basic production process is similar for both materials, copper and aluminum differ significantly in their properties, which affects their production methods and equipment.

 

Production Process:

Both aluminum and copper extrusion processes involve applying hydraulic or mechanical pressure to metal billets, which are heated to increase their plasticity for easier extrusion. The extrusion equipment, including extrusion cylinders, molds, extrusion rods, and heating systems, are similar for both metals. However, because copper and aluminum have different properties, the specific production conditions, such as temperature and pressure, vary.

 

Differences Between Aluminum and Copper:

 

Aluminum:

Density: Low

Melting Point: Approximately 660°C

Plasticity: High, making it easier to extrude

Extrusion Pressure: Relatively low

 

Copper:

Density: High

Melting Point: Approximately 1085°C

Hardness: Higher, making extrusion more difficult

Extrusion Pressure: Higher due to its hardness

Because of these differences, the heating temperature required for aluminum and copper extrusion is not the same. For aluminum, the heating temperature typically ranges from 400°C to 500°C, while for copper, it is generally higher due to its higher melting point. This difference in properties also results in copper requiring higher extrusion pressures compared to aluminum. This is one of the reasons why our HuaNan heavy Industry can produce copper extruders in addition to aluminum extruders.

 

Molds:

Mold material plays a crucial role in determining the extrusion quality. Aluminum extrusion molds are usually made from high-strength steel, offering durability. Copper extrusion molds, on the other hand, require materials with higher wear and heat resistance, making them less durable than aluminum molds.

 

Lubrication:

The choice of lubricant also differs. Aluminum extrusion typically uses graphite or oil-based lubricants, while copper extrusion requires high-temperature lubricants such as glass lubricants to manage the higher extrusion pressures.

 

Cooling:

After extrusion, cooling methods vary. Aluminum cools faster and is typically cooled using air or water, while copper requires a slower, gentler cooling process to prevent cracking.

 

Post-Treatment:

Aluminum often undergoes anodizing or spraying treatments, while copper is usually treated through electroplating or polishing to achieve a smooth finish.

 

Production Costs:

Despite similar production processes, the costs of extruding copper are generally higher than for aluminum due to copper's higher extrusion pressures and material costs.

 

Summary:

In conclusion, while the extrusion processes for aluminum and copper are fundamentally similar, the differences in their material properties lead to distinct requirements for heating, extrusion pressure, mold materials, lubrication, cooling, post-treatment, and cost. Copper extrusion typically involves higher pressures, more specialized molds, and more complex handling, which results in higher production costs compared to aluminum extrusion.

                                                          

 

Forging and casting are two common metalworking processes, each with its own advantages and disadvantages, suitable for different applications.

 

Let’s start by looking at the benefits of forging over casting:

 

Higher Strength: During the forging process, the grain structure of the steel is compressed and refined, enhancing its strength and toughness.

 

Better Fatigue Performance: Forged parts can withstand repeated stresses, making them ideal for high-load and dynamic stress applications.

 

Fewer Internal Defects: Forging reduces defects such as porosity and shrinkage, improving the material’s density and overall quality.

 

High Dimensional Precision: Forged parts have precise dimensions, requiring minimal post-processing, which saves both material and time.

 

At Huannan Heavy Industry, we use forging for the main components of our aluminum extrusion machines, including the front beams, tension columns, extrusion rods, and extruder container. This allows our machines to better withstand the impact forces during extrusion.

 

In contrast, many competitors use cast steel for components like the front beam and tension column. The drawback of casting is that the material’s strength is lower due to a coarser grain structure, and casting is more prone to internal defects like porosity and shrinkage. These defects can weaken the material and affect its overall performance.

 

Aluminum extrusion machines made with cast steel are more likely to suffer from insufficient toughness and strength, making them prone to damage under prolonged operational pressure. While casting is more cost-effective, the quality simply cannot match that of forged steel. This is why our extrusion machines may be priced higher than those of our competitors, but the superior quality and longer service life make them a much better investment in the long run.

 

This is the confidence we have in Huannan Heavy Industry’s aluminum extrusion machines—our commitment to quality sets us apart.

Press Brakes are one of the tools widely used in the metal processing industry. When we use bending machines, we will inevitably encounter some hydraulic problems, which are closely related to hydraulic oil. Hydraulic oil not only provides power for bending machines, but also plays a role in lubrication and cooling. It is crucial in hydraulic systems and directly affects the performance and reliability of equipment. ZYCO, as a manufacturer with 30 years of experience in sheet metal equipment manufacturing, will take you to learn about the relevant information about hydraulic oil for Press Brake.

 

 

1. What are the general types of hydraulic oil ?

1.1 Mineral oil type hydraulic oil

Mineral oil is the most common hydraulic oil in the use of hydraulic oil. It has a higher cost-effectiveness and good lubricity and economy. They are usually treated with additives to improve their antioxidant and anti-corrosion properties. However, the anti-wear properties of this type of hydraulic oil are general and are suitable for general hydraulic systems.Bending machine can be used.

1.2 Synthetic hydraulic oil

Synthetic oil is made by chemical synthesis and has better temperature stability and anti-wear properties. This type of hydraulic oil has good anti-wear performance and is suitable for high-load hydraulic systems and high-temperature and high-pressure working environments.Bending machine can be used.

1.3 Bio-based oil

Bio-based oil is derived from plant or animal fats and is environmentally friendly, but the price is relatively high. It is suitable for occasions with high environmental requirements. Generally, hydraulic presses rarely use this type of hydraulic oil.

1.4 Oil-concentrated hydraulic oil

This type of hydraulic oil has the advantages of good environmental performance and low cost, and is suitable for low-cost hydraulic systems.Bending machine is not recommended.

 

2. Performance indicators of hydraulic oil

When choosing hydraulic oil for Press Brake, you usually need to pay attention to the following performance indicators:

2.1 Viscosity of hydraulic oil

Hydraulic oil flows repeatedly in the entire hydraulic system of the machine, and its viscosity affects its fluidity and lubricity. As the machine is used continuously, the oil temperature will rise, and the viscosity of the hydraulic oil will decrease. The flow rate will also change, which will directly affect the performance of the machine. Higher viscosity is suitable for high temperature or high pressure environments, while low viscosity oil is suitable for low temperature conditions, so users in different regions also need to screen hydraulic oil according to the temperature of the region.

2.2 Antioxidation

Hydraulic oil will inevitably come into contact with air during operation, so it is easy to oxidize and deteriorate, affecting its service life. Oils with good antioxidation properties can extend the service life, which is also related to the sealing of the machine. ZYCO Press Brake have always maintained high sealing of the oil tank, thereby reducing the contact between hydraulic oil and air and extending the use of hydraulic oil.

2.3 Anti-emulsification

Hydraulic oil may come into contact with water in the air. Hydraulic oil with strong anti-emulsification properties can effectively prevent water intrusion and ensure the normal operation of the hydraulic system.

 

3. Selection and maintenance of hydraulic oil

3.1 Selection

When choosing hydraulic oil, we should ask the manufacturer for advice and choose according to the working environment, workload, etc. Avoid choosing the wrong oil and affecting the hydraulic system.

3.2 Maintenance

ZYCO usually recommends that customers regularly check the status of the hydraulic oil according to the use of the machine, including viscosity, color and impurity content. If you are unable to grasp the situation, you can contact the manufacturer and replace the hydraulic oil under the manufacturer's advice. This will greatly extend the use of the hydraulic system of the Press Brake and is also the best maintenance for the seals.

 

4. Conclusion

Hydraulic oil is the blood of the Press Brake and plays an important role in the performance and service life of the machine. Reasonable selection and maintenance of hydraulic oil can not only improve the working efficiency of the bending machine, but also extend its service life. In the future, with the development of technology, the performance of hydraulic oil will continue to improve, providing support for the sustainable development of the metal processing industry. ZYCO will also continuously update the relevant information of hydraulic oil and provide valuable suggestions for users.

An industry earthquake caused by a "leak"

In 2023, a well-known electric vehicle brand in Southeast Asian countries was forced to recall thousands of new cars due to the failure of the high-voltage DC relay seal - the reason was a micro-crack on the ceramic shell that was invisible to the naked eye. This lesson worth millions of dollars made the entire industry realize: "Invisible loopholes are the biggest risks."

 

As the new energy vehicle industry in Southeast Asian countries soars (Thailand aims to produce 725,000 electric vehicles in 2030), manufacturers of high-voltage DC relays are facing a dual challenge: not only to meet the stringent requirements of the 800V high-voltage platform, but also to control costs and seize the market. The airtightness of the ceramic shell, as the "armor" of the relay, directly determines the product life and safety.

 

1. Why do high-voltage DC relays have to "stick to" ceramic housings?

1. Survival rules in the high-voltage era

The 800V high-voltage platform has become the mainstream trend of electric vehicles, with larger currents and more intense heat generation. Traditional plastic housings are prone to deformation and aging, while ceramic housings have become rigid demands due to their high temperature resistance (>1000℃), strong insulation and long life.

 

But hidden dangers are hidden in the details: tiny pores or welding residues during the ceramic sintering process may cause hydrogen leakage, which may cause relay malfunction or battery thermal runaway.

 

2. The "blind spot" of traditional testing

The embarrassment of water testing: the housing needs to be dried after the immersion test, which may introduce moisture corrosion risks.

 

Limitations of pressure testing: only large leaks can be detected, and micro leaks of ≤10⁻⁶ mbar·l/s are helpless - this is equivalent to leaking a sesame-sized helium every year.

 

Industry truth: 90% of ceramic housing failure cases are due to "nano-level vulnerabilities" that traditional testing methods fail to detect.

 

2. Helium inspection technology: the scientific magic that makes the "invisible killer" nowhere to hide

Imagine: helium is like a group of well-trained "scouts", and the helium detector is their command center.

 

1. Ultra-sensitive "leak detection" principle

Molecular penetration: The diameter of helium molecules is only 0.26 nanometers, which can drill into the 0.1 micron defect of the ceramic shell.

 

Accurate tracking: The helium mass spectrometer is like a "gas radar", which can detect leak rates as low as 5×10⁻¹⁰ mbar·l/s (1000 times more sensitive than traditional methods).

 

Non-destructive testing: No need to contact liquid, avoid shell contamination, especially suitable for the cleanliness requirements of high-voltage DC relays.

 

Case report: After a supplier in Jakarta, Indonesia introduced an automatic helium detector, it successfully passed the German Rhine TÜV certification, won orders from European car companies, and increased its annual export volume by 200%.

 

3. Automatic helium inspection machine: "efficiency-enhancing and burden-reducing magic weapon" for Southeast Asian factories

For Southeast Asian manufacturers who are sensitive to labor costs, the value of this equipment is far more than "quality inspection" - it is also an invisible engine for profit growth.

 

1. Speed revolution: faster than cooking a bowl of Vietnamese rice noodles

Multiple vacuum boxes are used for parallel inspection, and the time for a single piece is ≤15 seconds. More than 2,000 pieces can be inspected in 8 hours.

 

The code scanning traceability system automatically associates production batches, and the source of quality problems is located in 30 seconds.

 

2. Helium circulation: saving real money

Helium prices fluctuate violently (the increase in 2024 is more than 30%), but through the 95% recovery rate design, a single device can save about 80,000 US dollars in helium costs per year - enough to add another production line!

 

3. Flexible intelligent manufacturing: one machine for multiple uses

The modular design is suitable for ceramic shells of different sizes, from high-voltage DC relays for new energy vehicles to charging pile seals, and can be quickly changed in 5 minutes.

 

Intelligent pressure regulation (0.1-1.0MPa) matches a variety of test scenarios.

 

Future vision: When helium inspection machine meets AIoT

Intelligent prediction: Through machine learning, analyze historical data and reduce the defect rate.

Cross-border collaboration: Real-time remote generation of optimization solutions based on inspection data.

 

In the trend of "high voltage" and "fast charging" in electric vehicles, every tiny crack in the ceramic housing may cause the company's hard-earned brand reputation to collapse. An automatic helium inspection machine is not only the "gatekeeper" of quality, but also the "golden key" of the relay product line.

All-solid-state battery cars: no mileage limit, a new driving force for future travel

All-solid-state battery cars use solid electrolytes to replace the liquid electrolytes in traditional lithium-ion batteries, and store and release electrical energy through the migration of lithium ions between the positive and negative electrodes. This new type of battery uses solid conductive materials, which fundamentally solves the safety hazards of liquid electrolytes.

 

 

Why is helium leak detection the "safety gatekeeper" of all-solid-state batteries?

 

Although all-solid-state batteries use solid electrolytes instead of flammable liquid materials, minor defects in the battery packaging process may still cause gas leakage or moisture intrusion, causing performance degradation or even safety hazards. Helium (He), as an inert gas, has extremely small molecules (only 0.26 nanometers in diameter) and can accurately detect micron-level leaks. It is the "gold standard" for detecting battery air tightness.

 

 

The automatic helium inspection machine for automotive parts developed by HCTE uses a high-precision helium mass spectrometer leak detector, which can complete the battery pack sealing test within 10 seconds with a sensitivity of up to 5×10⁻⁸ mbar·Ls. By simulating complex working conditions such as vibration and temperature changes during vehicle driving, the equipment ensures that each battery meets the IP67 protection standard before mass production, completely eliminating the risk of "a thousand-mile dam collapsed by an ant hole".

 

 

HCTE Helium Inspection Machine: The Key Driver of Mass Production of All-Solid-State Batteries

The commercialization of all-solid-state batteries faces two major bottlenecks: high interface impedance and high manufacturing costs. HCTE's automated helium inspection technology is breaking through from the following dimensions:

1. Cost reduction and efficiency improvement: Traditional helium inspection relies on manual operation, which is inefficient and has a high error rate. HCTE equipment supports fully automatic assembly line integration, with a 300% increase in inspection efficiency. A single device can inspect up to 500,000 sets of batteries per year, helping automakers to quickly achieve large-scale production.

2. Extend life: By accurately locating and repairing micro-leakage points, the battery cycle life is increased by more than 20%, directly reducing users' "battery anxiety".

 

3. Compatible with future technologies: Whether it is a sulfide electrolyte or an oxide system, the HCTE helium inspection machine can be adapted, providing "zero compromise" quality assurance for the development of next-generation solid-state batteries.

 

Data speaks: How does helium leak detection rewrite the rules of the game in the industry?

Safety improvement: The fire accident rate of battery packs equipped with HCTE helium detectors has decreased by 95%.

Endurance optimization: After the airtightness meets the standard, the battery energy loss is reduced by 8%, and the endurance mileage has steadily exceeded 800 kilometers.

 

Customer case: After a leading car company adopted HCTE equipment, the battery recall rate dropped by 92%, and the annual cost savings exceeded 200 million yuan.

 

 

The future has come: In 2030, how will all-solid-state batteries change your travel?

Industry forecasts show that all-solid-state batteries will occupy 30% of the new energy market in 2030, and helium leak detection technology will become the "invisible engine" of this process. As the world's leading leak detection solution provider, HCTE has reached strategic cooperation with various battery manufacturers. Its modern automatic helium detector has introduced blockchain traceability technology to "chain" the detection data of each battery and provide users with a lifetime warranty certificate.

 

 

 

Act now: If you are looking for the best solution for battery leakage detection, or want to learn more about the technical details of HCTE automatic helium inspection machine for automotive parts and get customized solutions, please contact our engineering team for consultation - there is no need to compromise between safety and efficiency!

In the field of automobile manufacturing, the quality and performance of automotive high-voltage relays are crucial. As a key inspection tool to ensure their sealing, the helium inspection equipment produced by HCTE provides a strong guarantee for the production and quality control of automotive high-voltage relays with many outstanding advantages.

 

High-precision inspection capability:

HCTE's helium inspection equipment uses advanced technology and precision sensors to detect extremely small helium leaks with extremely high detection accuracy, which can reach or even exceed the industry-leading level. For automotive high-voltage relays, which have extremely high requirements for sealing, this advantage can effectively detect potential tiny leaks and ensure the reliability and safety of products under complex working conditions such as high voltage and high current, thereby avoiding relay failures caused by leakage problems and possible problems with the automotive electrical system.

Efficient inspection speed:

In the fast-paced environment of automobile production, efficiency is competitiveness. HCTE's helium inspection equipment has the ability to quickly detect and can complete the inspection task of automotive high-voltage relays in a short time, greatly improving production efficiency and reducing waiting time and cost consumption in the production process. This enables automakers to produce more high-quality relays within a limited time, better meet market demand, and enhance the economic benefits and market competitiveness of enterprises.

 

 

Wide compatibility and adaptability:

Automotive high-voltage relays come in a variety of types, specifications and sizes. HCTE's helium inspection equipment fully takes this into account and has strong compatibility and adaptability. Through simple parameter adjustment and tooling replacement, the equipment can easily cope with the inspection needs of different types of relays, without the need to configure inspection equipment separately for each relay, saving a lot of equipment procurement costs and equipment floor space for enterprises, and improving the utilization rate of production resources.

Highly intelligent and automated:

The equipment is equipped with an advanced intelligent control system and a user-friendly automated operation interface, realizing a fully automated process from relay loading, inspection to data recording and result judgment. Operators only need to perform simple settings and monitoring to complete the entire inspection process, which not only reduces labor intensity, but also reduces the impact of human factors on the inspection results, and improves the consistency and accuracy of the inspection results. In addition, the equipment also has the functions of automatic data storage, query and analysis, which facilitates enterprises to trace and manage production data and provide strong support for quality improvement.

 

 

Stable and reliable performance:

The equipment on the automobile production line needs to run stably for a long time, and HCTE's helium inspection equipment performs well in this regard. It uses high-quality components and advanced manufacturing processes to ensure that the equipment has stable and reliable performance during long-term continuous operation and is not prone to failure. Even in harsh production environments, such as high temperature and high humidity, the equipment can still maintain a good working condition, providing stable and reliable detection guarantees for the quality control of automotive high-voltage relays, and reducing production delays and quality risks caused by equipment failures.

Easy to operate:

HCTE is well aware of the importance of user experience, so it fully considers the ease of operation in the design of the equipment. The operating interface of its helium inspection equipment is simple and intuitive, easy to understand and operate, and can be used without complex training by professional technicians. For automobile manufacturers, this can quickly put the equipment into production, reduce personnel training costs and time costs, and improve production efficiency.

Powerful fault diagnosis function:

In order to help companies solve problems encountered in the production process in a timely manner, HCTE's helium inspection equipment also has a powerful fault diagnosis function. When the equipment detects an abnormal situation or a leakage problem in the relay, it can accurately locate the fault point and provide detailed fault information and solutions to help maintenance personnel quickly repair the problem, reduce equipment downtime, and improve production continuity and stability.

Safety and environmental protection characteristics:

While focusing on production efficiency and product quality, HCTE also attaches great importance to the safety and environmental protection performance of the equipment. Helium, as a detection medium, has the characteristics of non-toxic, odorless, and non-flammable, and is relatively safe for operators and the environment during use. In addition, the equipment is designed with a sealed structure and safety protection device to effectively prevent helium leakage from polluting the environment, while also ensuring the health of the operator, which meets the requirements of modern automobile manufacturers for safe production and environmental protection.

The automotive high-voltage relay helium detection equipment produced by HCTE plays an important role in the production and detection of automotive high-voltage relays with its many advantages such as high precision, high efficiency, high compatibility, high degree of intelligent automation, stable and reliable performance, simple operation, strong fault diagnosis ability, and safety and environmental protection. It provides high-quality and reliable detection solutions for automobile manufacturers and helps the high-quality development of the automotive industry.