Trapezoidal screw: Pure sliding friction - brass (good self-lubrication) has a very low efficiency of 60%, a simple structure, low cost and no precision, large surface contact load, large starting resistance, resulting in creeping and creeping during ultra-low speed operation. Trapezoidal screws can be selected when there is no precision requirement, a large axial load is required, the budget is low and the cost needs to be reduced, the speed is low, and the occasion is not important.

Ball screw: It realizes high-efficiency and low-friction transmission through rolling media, with an efficiency of more than 90%. Compared with surface contact, ball is point contact, with smaller load, higher precision and higher cost.

The speed of the screw is limited, and it is best to control it within 1500rpm. If the screw is too long, it needs to be pressed down to within 1000rpm.

Unit movement of the screw: lead (pitch, Pb)

[Fixed seat]: Angular contact bearings are used in pairs to constrain the axial direction of the screw and are mainly used to bear the axial force of the screw

[Support seat]: Deep groove ball bearings are used alone, purely to support the tail of the screw, so that it does not run around and can slide axially

[Fixed + Support]: The most classic structure

[Fixed + Free]: There is no way to put it, there is no place to install the support seat (short stroke, structural requirements), the speed cannot be too high, and the load should not be too large

[Fixed + Fixed]: Not suitable for high-speed operation, heating will cause the screw to deform and get stuck, very good rigidity, high precision

[Support + Support]: No precision, loose mechanism, small load, almost no requirements for motion performance---hand-cranked adjustment mechanism

Nut structure of ball screw

[External circulation]: Better high-speed performance, complex structure, higher cost

[Internal circulation]: Slightly lower cost, more compact structure, easy to install

Ball Screw precision

C0 C1 .......C7 C10 ...

The larger the number, the worse the accuracy and the lower the cost

The screw rods of C7 and later are processed by extrusion molding --- rolled screw rods: high production efficiency----cheap, short delivery time

The screw rods of C5 and earlier are processed by whirlwind milling + grinding --- ground screw rods: low production efficiency---very expensive, high accuracy

The most used: C7

Ball Screw Preload

Effectively prevent the nut seat from offsetting due to clearance when the load is large (improve the dynamic accuracy of large loads)

Increases internal stress, greater resistance, and increased heat generation

 

         EPE foam fruit net extrusion machine are becoming increasingly popular in India because of their efficiency, cost-effectiveness, and high-quality output. This article will cover the feedback from the Indian market, various applications of these machines, and their key advantages. 

        Our EPE foam fruit net extrusion machines have received positive feedback from Indian customers. Clients have particularly praised the machine's durability, low maintenance requirements, and high output rates. Many businesses in India, ranging from small-scale operations to large enterprises, have noted significant improvements in their production efficiency and product quality after integrating our machines into their processes.

     

    Market Applications

The EPE foam fruit net extrusion machine has a wide range of applications and significant potential in the Indian market:

 

1. Agricultural Packaging: Primarily used for packaging export fruits like apples, pears, mangos, and grapes, providing protection during transportation and storage to maintain quality and reduce damage. This is particularly important for exports to markets such as the Middle East, Europe, and Southeast Asia.

2. Horticulture and Floriculture: Used to protect flowers and plants during transport, preventing damage to stems and leaves. This application is especially crucial for exporting floral products to countries like the USA, Netherlands, Germany, and Japan.

     Advantages of Our EPE Foam Fruit Net Extrusion Machine

 

1. High Efficiency: Our machine features a high-speed extruder and automatic cutting system, ensuring a high production rate with minimal downtime.
2. Cost-Effective: The machine's low energy consumption and minimal maintenance requirements make it a cost-efficient option for businesses of all sizes.
3. Durable and Reliable: Built with high-quality components, our machines are designed to withstand continuous use and harsh operating conditions.
4. Easy Operation: With a user-friendly interface, our EPE foam fruit net extrusion machine is easy to operate, even for non-technical personnel.
5. Customizable Output: The machine allows for customization of net size, thickness, and color, catering to different market needs.

 

EPE (Expanded Polyethylene) foaming machines are widely used across industries like packaging, construction, electronics, and home goods. With the growing market demand, more businesses are interested in selecting the right foaming machine. Choosing the right machine not only boosts production efficiency but also helps control costs. Here are some recommendations:

• Production Needs and Output
  First, clarify your production needs. Small businesses and large-scale manufacturers have different output demands. Small-scale production may benefit from lower-capacity, flexible machines, while large-scale production should prioritize high-output, high-efficiency machines to meet daily production goals.

• Stability and Safety of Equipment
  The stability of the machine directly affects production efficiency. Choose a foaming machine that has proven market reliability and stable operation to avoid downtime. Equipment safety is also crucial to protect operators, so it's essential to consider this factor as well.

• 

• Level of Automation
  With advancements in technology, many foaming machines now come with automation features. Highly automated machines reduce manual labor and enhance the consistency of product quality. Choose a machine with the right level of automation based on your budget and operational needs.

• 

• After-Sales Service
  A foaming machine is a long-term investment, and reliable after-sales service ensures its efficient operation over time. Select a supplier that offers comprehensive after-sales support, ensuring timely maintenance and parts replacement to minimize downtime.

• 

• Cost-Effectiveness
  While price is often a primary consideration, cost-effectiveness is more critical. Instead of choosing solely based on price, consider factors like machine lifespan, energy consumption, and maintenance costs. Choosing a cost-effective machine leads to better ROI.

• 

A Stability Chamber, also known as a Stability Test Chamber, is a specialized piece of equipment designed to create controlled environmental conditions for testing the stability and durability of products. These chambers are essential tools in industries such as pharmaceuticals, cosmetics, food and beverage, and electronics, ensuring that products meet regulatory and quality standards.

 

Functions of a Stability Chamber

The primary purpose of a Stability Chamber is to simulate various environmental conditions, such as temperature and humidity, over extended periods. This allows manufacturers to observe how their products react to environmental stressors like heat, cold, moisture, and light. Stability Chambers are equipped with advanced temperature and humidity control systems to maintain precise conditions, often following international guidelines like ICH Q1A for stability testing.

Key features include:

1.Temperature Control: Ranges typically from 10°C to 60°C.
2.Humidity Control: Adjustable levels between 20% to 95% relative humidity.
3.Uniformity: Ensures consistent conditions throughout the chamber.
4.Data Logging: Real-time monitoring and recording of testing conditions.

Applications of Stability Test Chambers

1.Pharmaceuticals: Conducting stability studies to determine drug shelf life and optimal storage conditions.
2.Food & Beverage: Testing packaging and product stability under varying conditions to ensure quality.
3.Cosmetics: Assessing formulations for durability against temperature and humidity changes.
4.Electronics: Simulating environmental conditions to ensure the longevity of components.

Why Choose Labonce Stability Chambers?

Labonce offers advanced Stability Chambers tailored to meet stringent industry requirements. With state-of-the-art technology, precise control systems, and a focus on reliability, Labonce ensures your testing processes are efficient and compliant with international standards. Our products combine durability, energy efficiency, and easy operation, making them a trusted choice for stability testing across diverse industries.

Whether you're conducting drug stability studies or ensuring product quality, Labonce Stability Chambers provide unmatched performance to meet your testing needs.

 

 

Selecting the ideal Stability Chamber, also known as a Stability Test Chamber, is crucial for ensuring accurate testing results and maintaining compliance with industry standards. With so many options available, it’s essential to consider several key factors before making a decision. Here’s a guide to help you choose the right Stability Chamber for your business, with insights into how Labonce Stability Chambers stand out.

 

1. Temperature and Humidity Range

The core function of a Stability Chamber is its ability to maintain precise environmental conditions. Ensure the chamber you choose can meet your required temperature and humidity ranges. For most industries, a range of 10°C to 60°C for temperature and 20% to 95% RH for humidity is sufficient. Labonce stability chambers excel in delivering stable and uniform conditions tailored to various applications.

 

2. Chamber Size and Capacity

Assess your testing volume to determine the appropriate size. Smaller chambers are ideal for compact operations, while larger, walk-in models suit high-volume testing. Labonce offers a variety of sizes, from benchtop models to walk-in chambers, to fit your specific needs.
3. Compliance with Standards

In industries like pharmaceuticals, compliance with standards such as ICH Q1A is non-negotiable. Labonce Stability Test Chambers are designed to meet global regulatory requirements, ensuring reliable testing results and audit readiness.

 

4. Energy Efficiency

Opt for an energy-efficient chamber to reduce operational costs without compromising performance. Labonce chambers are built with energy-saving technology, making them a cost-effective choice.

 

5. Features and Technology

Look for advanced features such as programmable controls, real-time data logging, and remote monitoring. Labonce chambers integrate cutting-edge technology to enhance user experience and testing accuracy.

 

6. Reliability and Maintenance

Choose a Stability Chamber from a reputable brand known for durability and after-sales support. Labonce provides robust systems with low maintenance requirements, backed by comprehensive technical support.

 

Why Choose Labonce Stability Chambers?

Labonce is committed to providing high-performance Stability Test Chambers tailored to your business needs. With precise control systems, energy efficiency, and compliance with international standards, Labonce ensures reliable and efficient testing solutions.

Investing in the right Stability Chamber means better testing results and long-term operational efficiency. Trust Labonce to deliver excellence in stability testing technology.

 

Burn-in Oven

Burn-in is an electrical stress test that employs voltage and temperature to accelerate the electrical  failure of a device.  Burn-in essentially simulates the operating life of the device, since the electrical excitation applied during burn-in may mirror the worst-case bias that the device will be subjected to in the course of its useable life.  Depending on the burn-in duration used,  the reliability information obtained  may pertain to the device's early life or its wear-out.  Burn-in may be used as a reliability monitor or as a production screen to weed out potential infant mortalities from the lot.

Burn-in is usually done at 125 deg C, with electrical excitation applied to the samples.  The burn-in process is facilitated by using burn-in boards (see Fig. 1) where the samples are loaded. These burn-in boards are then inserted into the burn-in oven (see Fig. 2), which supplies the necessary voltages to the samples while maintaining the oven temperature at 125 deg C.  The electrical bias applied may either be static or dynamic, depending on the failure mechanism being accelerated.

Figure 1.  Photo of Bare and Socket-populated Burn-in Boards

The operating life cycle distribution of a population of devices may be modeled as a bath tub curve, if the failures are plotted on the y-axis against the operating life in the x-axis.  The bath tub curve shows that the highest failure rates experienced by a population of devices occur during the early stage of the life cycle, or early life, and during the wear-out period of the life cycle.  Between the early life and wear-out stages is a long period wherein the devices fail very sparingly.   

Figure 2.  Burn-in ovens

Early life failure (ELF) monitor burn-in, as the name implies,  is performed to screen out potential early life failures. It is conducted for a duration of 168 hours or less, and normally for only 48 hours.  Electrical failures after ELF monitor burn-in are known as early life failures or infant mortality, which means that these units will fail prematurely if they were used in their normal operation.

High Temperature Operating Life (HTOL) Test is the opposite of ELF monitor burn-in, testing the  reliability of the samples in their wear-out phase. HTOL is conducted for a duration of 1000 hours, with intermediate read points at 168 H and 500 H.  

Although the electrical excitation applied to the samples are often defined in terms of voltages, failure mechanisms accelerated by current (such as electromigration) and electric fields (such as dielectric rupture) are understandably accelerated by burn-in as well.  

Double 85 Constant Temperature And Humidity Reliability Environmental Test (THB)

First, high temperature and humidity test

WHTOL (Wet High Temperature Operating Life) is a common environmental stress acceleration test, usually 85℃ and 85% relative humidity, which is generally carried out in accordance with the standard IEC 60068-2-67-2019. The test conditions are shown in the chart.

Second, the test principle

"Double 85 test" is one of the reliability environmental tests, mainly used for constant temperature and humidity box, that is, the temperature of the box is set to 85℃, the relative humidity is set to 85%RH conditions, to accelerate the aging of the test product. Although the test process is simple, the test is an important method to evaluate many characteristics of the test product, so it has become an indispensable reliability environmental test condition in various industries.

After aging the product under the condition of 85℃/85%RH, compare the performance changes of the product before and after aging, such as the photoelectric performance parameters of the lamp, the mechanical properties of the material, yellow index, etc., the smaller the difference, the better, so as to test the heat and moisture resistance of the product.

The product may have thermal failure when working in a continuous high temperature environment, and some moisture sensitive devices will fail in a high humidity environment. The dual 85 test can test the thermal stress generated by the product under high humidity and its ability to resist long-term moisture penetration. For example, the frequent failure of various products in the humid weather period in the south is mainly due to the poor temperature and humidity resistance of the products.

3. Experimental factors

In the LED lighting industry, many manufacturers have used the double 85 test results as an important means to judge the quality of lamps. Various possible reasons why LED lamps fail the dual 85 test are:

1. Lamp power supply: poor heat resistance of shell, danger of short circuit in circuit, failure of protection mechanism, etc.

2. Lamp structure: unreasonable design of heat dissipation body, installation problems, materials are not resistant to high temperature.

3. Lamp light source: poor moisture resistance, packaging adhesive aging, high temperature resistance.

If you encounter a special use environment, such as the working environment temperature is severe, you need to test its high and low temperature resistance, the test method can refer to the high and low temperature test project.

4. Serve customers

01. Customer group

LED lighting factory, LED power plant, LED packaging factory

02. Means of detection

Constant temperature and humidity test chamber

03. Reference standards

Constant temperature and humidity tests for electrical and electronic products -- Environmental testing -- Part 2: Test methods -- Test Cab: Constant temperature and humidity test GB/T 2423.3-2006.

04. Service content

4.1 Refer to the standard, conduct double 85 test on the product, and provide the third party's test results report.

4.2 Provide the analysis and improvement plan of the product through the double 85 test.

High Temperature Aging Cabinet

High temperature aging cabinet is a type of aging equipment used to remove early failure of non-conforming product parts.

Use of temperature aging cabinet, aging oven:

This test equipment is a test equipment for aviation, automobile, home appliances, scientific research and other fields, which is used to test and determine the parameters and performance of electrical, electronic and other products and materials after temperature environment changes in high temperature, low temperature, alternating between temperature and humidity or constant temperature and humidity.

The chamber of the test equipment is sprayed with steel plate after treatment, and the spray color is optional, generally beige. SUS304 mirror stainless steel is used in the inner room, with a large window tempered glass, real-time observation of internal aging products.

Features of temperature aging cabinet, aging oven:

1. PLC processing industry touch screen programming combination control, balanced temperature control system: aging specimen room temperature rise start the ventilation fan, balance the sample heat, aging cabinet is divided into product area and load area

2. PID+SSR temperature control system: according to the temperature change in the specimen box, the heat of the heating tube is automatically adjusted to achieve the temperature balance, so that the heating heat of the system is equal to its heat loss and achieve the temperature balance control, so it can run stably for a long time; The fluctuation of temperature control is less than ±0.5℃

3. The air transport system is composed of three-phase asynchronous electronic multi-wing wind wheel and wind drum. The wind pressure is large, the wind speed is uniform, and the uniformity of each temperature point is met

4. High precision PT100 platinum resistance for temperature acquisition, high accuracy for temperature acquisition

5. Load control, the load control system provides ON/OFF control and timing control two functional options to meet the different test requirements of the product

(1)ON/OFF function introduction: The switch time, stop time, and cycle times can be set, the test product can be switched according to the setting requirements of the system, the stop cycle control, the aging cycle number reaches the set value, the system will automatically sound and light prompt

(2) Timing control function: the system can set the running time of the test product. When the load starts, the product power supply starts timing. When the actual timing time reaches the time set by the system, the power supply to the product is stopped

6. System operation safety and stability: The use of PLC industrial touch screen control system, stable operation, strong anti-interference, convenient program change, simple line. Perfect alarm protection device (see protection mode), real-time monitoring of the operating status of the system, with the function of automatic maintenance of temperature data during operation, in order to query the temperature historical data when the product is aging, the data can be copied to the computer through the USB interface for analysis (format is EXCEL), with historical data curve display function, It intuitively reflects the temperature change in the product area during the product test, and its curve can be copied to the computer in BMP format through the USB interface, so as to facilitate the operator to make the test product report. The system has the function of fault query, the system will automatically record the alarm situation, when the equipment fails, the software will automatically pop up the alarm screen to remind the cause of the fault and its solution; Stop the power supply to the test product to ensure the safety of the test product and the equipment itself, and record the fault situation and occurrence time for future maintenance.

High Temperature Furnace Inspection Index

What is the high temperature furnace test standard? What metrics are tested? How long is the detection cycle? Which items are tested?

Test items (reference) :

Temperature uniformity test, system accuracy test, temperature, system accuracy, temperature uniformity, high temperature furnace verification and calibration, high temperature furnace (tube furnace) verification and calibration, box resistance furnace (high temperature furnace, heat treatment furnace) verification and calibration, high temperature furnace (box resistance furnace, dry furnace, heat treatment furnace) verification and calibration, silica

List of testing standards:

1, NCS/ CJ M61; SAE AMS 2750; JJF1376 High temperature furnace calibration specification NCS/ CJ M61, high temperature furnace calibration method SAE AMS 2750E, box type resistance furnace calibration specification JJF1376

2, AMS 2750F High temperature measurement AMS 2750F

3, GB 25576-2010 Food safety national standard Food additive silica (high temperature furnace method)

4, JJF 1184 thermocouple verification furnace temperature field test technical specification

5, AMS 2750E high temperature measurement AMS 2750E

6, AMS 2750F high temperature determination method 3.5

7, AMS 2750G high temperature measurement AMS 2750G

8, AMS 2750E high temperature determination method 1

9. JJF 1376; AMS 2750; JJG 276 Calibration specification for box type resistance furnace JJF 1376, high temperature measurement method AMS 2750E, high temperature creep, durable strength testing machine verification regulation JJG 276

10, JJF 1376 box type resistance furnace calibration specification

11, GB/T 9452-2012 heat treatment furnace effective heating zone determination method 1

12. SAE AMS 2750 high-temperature calibration method F

Lab Companion-Rapid Temperature Cycling Test Chamber

Introduction of Lab Companion

With over 20 years of experience, Lab Companion is a world class manufacturer of environmental chambers and an accomplished supplier of turn-key test systems and equipment.  All our chambers build on Lab Companion’s reputation for long life and exceptional reliability.

 With a scope of design, manufacture and service, Lab Companion has established a quality management system that complies with the International Quality System Standard ISO 9001:2008.  Lab Companion’s equipment calibration program is accredited to the International Standard ISO 17025 and the American National Standard ANSI/NCSL-Z-540-1 by A2LA.  A2LA is a full member and signatory of the International Laboratory Accreditation Cooperation (ILAC), the Asia Pacific Laboratory Accreditation (APLAC) and the European Cooperation for Accreditation (EA). 

Lab Companion’s SE-Series Environmental Test Chambers offer a significantly enhanced airflow system, which provides better gradients and improved product temperature change rates.  These chambers utilize Thermotron’s flagship 8800 Programmer/Controller featuring a high resolution 12.1” flat panel display with touch screen user interface, expanded capabilities to graph, data log, edit, access on-screen help, and long term hard drive data storage.

Not only do we offer the highest quality products, we also provide ongoing support designed to keep you up and running long after the initial sale.  We provide factory direct local service with an extensive inventory of the parts you might need. 

Performance

Temperature range: -70°C to +180°C

Performance: With 23 Kg aluminum load (IEC60068-3-5), the rising rate from +85°C to -40°C is 15℃/min; the cooling rate from -40°C to +85°C is15℃/min too.

Temperature control：± 1°C Dry bulb temperatures from control point after stabilization at the control sensor

Performance is based on an ambient condition of 75°F (23.9°C) and 50% RH

Cooling/Heating Performance based on measurement at the control sensor in the supply air stream

Constructure

Interior

Nonmagnetic Series 300 stainless steel with a high nickel content

Internal seams heliarc welded for hermetic sealing of the liner

Corners and seams designed to allow for expansion and contraction under the temperature extremes encountered

Condensate drain located in the liner floor and under the conditioning plenum

Chamber base is fully welded

“Ultra-Lite” non-settling fiberglass insulation

One adjustable interior stainless steel shelf is standard

Exterior

Die-formed treated sheet steel

Metal access covers provided for easy opening doors to electrical components

Finish water-based, air dry lacquer, sprayed over a cleaned and primed surface

Easy lift-off hinged access doors for servicing the refrigeration system

One 12.5 cm diameter access port with interior weld and removable insulating plug mounted in right hand side wall accessories on hinged door for easy access

Features

Chamber Operation clearly displays helpful run-time information

Graphing Screen offers expanded capabilities, enhanced programming and reporting

System Status displays crucial refrigeration system parameters

Program Entry makes it easy to load, view and edit profiles

Set Up quick-step wizards make profile entry easy

Pop-up Refrigeration Charts for handy reference

Therm-Alarm® provides over & under temperature alarm protection

Activity Log Screen provides comprehensive equipment history

Web Server allows internet access to equipment via Ethernet

User-Friendly Pop-up Key Pad makes data entry quick and easy

Includes:

- Four USB Ports-two External & two Internal

- Ethernet

- RS-232

Technical specifications

1-4 independently programmable channels

Measuring Accuracy: 0.25% of span typical

Selectable °C or °F temperature scale

12.1” (30 cm) color flat panel touch screen display

Resolution: 0.1°C, 0.1%RH, 0.01 for other linear applications

Real time clock included

Sample Rate: Process variable sampled every 0.1 seconds

Proportional Band: Programmable 1.0° to 300°

Control Method:  Digital

Intervals: Unlimited

Interval Resolution: 1 sec to 99 hrs,59 min with 1 second resolution

- RS-232

- 10+ Years Data Storage

- Product Temperature Control

- Event Relay Board

Operating Modes: Automatic or Manual

Program Storage:  Unlimited

Program Loops:

- Up to 64 loops per program

Loops can be repeated up to 9,999 times program

- Up to 64 nested loops are allowed per