The pneumatic yarn strength tester is mainly used to test the breaking strength and elongation of the yarn. The operation must be rigorous to ensure the accuracy of the data. The following are detailed instructions and precautions:

I. Operation steps

1. Preparation

Equipment inspection: Confirm that the air pressure source is stable (usually 0.4-0.6 MPa is required), there is no leakage in the air pipe connections, and the clamps are not worn.

Calibration: Use standard weights or calibrators to calibrate the force sensor and elongation device (recommended to be performed before starting the machine every day).

Yarn sampling: Cut a yarn sample of a specified length (usually 500mm) according to the standard (such as GB/T 3916) to avoid twisting or damage.

2. Clamping the sample

Clamp selection: Choose a flat clamp or a capstan clamp according to the thickness of the yarn to prevent slippage or clamping.

Clamping method:

(1) Place both ends of the yarn vertically into the upper and lower clamps to ensure that there is no slack or pre-tension.

(2) After clamping, check whether the yarn is centered to avoid deflection affecting the test results.

Pre-tension: The elastic yarn needs to be subjected to initial tension (such as 0.5cN/tex), which can be set with a tension clamp or software.

3. Parameter setting

Test mode: Select "constant speed stretching" (usually 100-500mm/min) or "constant elongation".

Test conditions: Set the gauge length (usually 250mm or 500mm), stretching speed, and number of tests (≥10 times, taking the average).

Air source adjustment: Adjust the air pressure to the required range of the equipment (such as 0.5MPa) through the pressure reducing valve.

4. Start the test

Click the "Start" button, and the device automatically stretches the yarn until it breaks.

Observe the yarn breaking process in real time. If there is slippage or abnormal fixture, pause and reload the sample immediately.

5. Data recording

The instrument automatically records the breaking strength (cN or N), breaking elongation (%), time-strength curve, etc.

Indicate the test conditions (temperature and humidity, stretching speed, etc.) when exporting data.

6. End cleaning

Turn off the air source and release the residual air pressure.

Clean the fixture to prevent fiber residue from affecting the next test.

II. Precautions

1. Safe operation

Do not touch moving parts during testing to prevent pinching.

The equipment will stop when there is a sudden gas failure and needs to be reset manually.

2. Data accuracy

Test the same sample at least 10 times and eliminate abnormal values (such as ±20% deviation from the mean).

Laboratory temperature and humidity must meet the standards (such as 20±2℃, 65±3%RH).

3. Maintenance points

Check the aging of the air pipe every week and lubricate the guide rail regularly.

The sensor should avoid overload shock and the calibration cycle should not exceed 3 months.

III. Common Problem Solving

Yarn slippage: Replace the anti-slip clamp or increase the clamping area.

Results fluctuate greatly: Check the yarn uniformity or clamp alignment.

The device does not respond: Confirm whether the air pressure meets the standard and restart the control system.

Through standardized operation and regular maintenance, the test results can be ensured to be reliable. The details of different models may vary slightly, it is recommended to refer to the specific equipment manual.

Email: hello@utstesters.com

Direct: + 86 152 6060 5085

Tel: +86-596-7686689

Web: www.utstesters.com

Yarn count is an important indicator to measure the thickness of yarn, which directly affects the quality, performance and cost of textiles. Yarn count tester is a key testing equipment in the textile industry, mainly used to measure the linear density (count) of yarn to ensure the accuracy of quality control, product standardization and trade settlement in the production process.

I. Main Purpose of Yarn Count Tester

1. Accurate determination of yarn count

The core function of the yarn count tester is to determine the linear density of yarn, that is, the quality of yarn per unit length (such as Tex, Denier, Ne, Nm and other different units). Through accurate measurement, it can be judged whether the yarn meets the production requirements and avoid product quality problems caused by count deviation.

2. Textile production quality control

In the production links such as spinning, weaving, and knitting, the uniformity of yarn count directly affects the strength, feel, appearance, and dyeing effect of the fabric. The yarn count tester can detect the yarn quality in real time, help manufacturers adjust process parameters, and ensure product consistency.

3. Raw material acceptance and trade settlement

In the process of yarn procurement and sales, the count is an important basis for settlement. The yarn count tester can objectively evaluate whether the yarn provided by the supplier meets the contract requirements and avoid trade disputes caused by inconsistent counts.

4. Product development and optimization

When developing new products, textile companies need to test yarns of different counts to optimize fabric performance. Yarn count testers can provide accurate experimental data to help R&D personnel choose appropriate yarn specifications.

5. Laboratory testing and standard certification

Yarn count testers are widely used in textile testing institutions, laboratories and third-party certification agencies to implement international standards (such as ISO, ASTM, GB, etc.) to ensure that products meet industry specifications.

II. Application fields of yarn count tester

(1) Spinning mill: used for quality control in the yarn production process.

(2) Weaving mill: ensure that the yarn count meets the weaving requirements to avoid fabric defects.

(3) Printing and dyeing mill: yarn count affects dyeing uniformity, and the tester can help optimize the process.

(4) Quality inspection agency: used for compliance testing of yarn products.

(5) Trading company: provide objective count test data in yarn trading.

III.Summary

The yarn count tester is an indispensable testing tool in the textile industry. Its uses cover production control, quality inspection, trade settlement, product research and development, and other links. By accurately measuring the yarn count, enterprises can improve production efficiency, reduce costs, and ensure product quality, thereby enhancing market competitiveness.

As the textile industry develops towards intelligence and automation, high-precision yarn count testers will play a more important role in promoting industry standardization and high-quality development.

Email: hello@utstesters.com

Direct: + 86 152 6060 5085

Tel: +86-596-7686689

Web: www.utstesters.com

In the fast-paced world of scrap recycling, alligator shears have emerged as an indispensable tool for efficient metal processing. Named for their distinctive hinged jaw design that resembles an alligator's mouth, these powerful machines deliver exceptional cutting performance across a wide range of materials.  

Unmatched Cutting Power and Versatility  

Driven by advanced hydraulic systems, alligator shears generate immense force, allowing them to effortlessly slice through thick steel bars, metal pipes, automotive components, and other challenging scrap materials. Their primary function is to reduce large, unwieldy scrap pieces into smaller, uniform sections—a critical step in preparing metals for downstream processes such as shredding, melting, or compacting. By optimizing scrap size, these shears enhance handling efficiency, streamline transportation logistics, and maximize the overall productivity of recycling operations.  

Built for Durability and Performance  

Engineered for heavy-duty industrial use, alligator shears are renowned for their rugged construction and long-term reliability. Designed to endure the harsh conditions of scrap yards and recycling facilities, they deliver consistent performance even under continuous operation. Their straightforward yet robust design minimizes maintenance requirements, reducing downtime and ensuring uninterrupted workflow.  

A Sustainable Solution for Modern Recycling  

As the global demand for sustainable metal recycling grows, alligator shears play a pivotal role in improving material recovery rates and operational efficiency. By transforming bulky scrap into manageable pieces, they contribute to a more streamlined, cost-effective, and environmentally friendly recycling process.  

Whether processing demolition debris, manufacturing waste, or end-of-life vehicles, alligator shears remain a trusted solution for scrap recyclers worldwide—combining power, precision, and durability to meet the evolving needs of the industry.

In the realm of metal recycling and processing, gantry shears stand as a remarkable innovation , revolutionizing the way we process scrap metal.

Gantry shears are heavy-duty hydraulic cutters designed for processing various metals. Their distinctive gantry-style construction provides exceptional stability and strength, enabling them to deliver tremendous cutting force. These robust machines can easily slice through thick metal plates, steel beams, and large scrap metal pieces with precision and efficiency.

One of the most significant advantages of gantry shears is their versatility. They can handle various metals like steel, aluminum, copper, and iron. Whether it's dismantling old cars, recycling construction waste, or processing industrial metal scrap, gantry shears prove to be up to the task.

Moreover, gantry shears are highly efficient and can finish the shearing process quickly, greatly boosting the productivity of metal recycling plants. Thanks to their precise cutting, they also reduce material waste, making recycling more cost - effective. This efficiency benefits recycling companies and has a positive environmental impact by promoting the reuse of valuable metal resources. 

In addition, the operation of gantry shear is relatively straightforward. With advanced hydraulic and control systems, operators can adjust the shear force, angle and speed according to different metal materials. Moreover, safety features are integrated into the design to ensure operator safety during high - pressure shearing. 

Gantry shears are crucial in scrap recycling. With powerful power, high precision and high automation, they can effectively improve efficiency. They're not just a machine but the key to unlocking metal recycling potential, turning waste into treasure and promoting a circular economy. 

The primary differences between forged and cast wheels lie in the manufacturing processes, material characteristics, strength, weight, and cost. Here's a breakdown of the distinctions:

Forged Wheels:

1.Manufacturing Process:

Forging involves shaping metal using compressive force, typically through the use of dies and hammers.

The process aligns the grain structure of the metal, resulting in increased strength.

2.Material Characteristics:

Forged wheels are made from a solid piece of billet aluminum or other alloys.The alignment of the grain structure enhances the material's strength and reduces the likelihood of porosity.

3.Strength:

Forged wheels are generally stronger than cast wheels due to the grain structure alignment and absence of porosity. They are often used in high-performance and racing applications where strength is crucial.

4.Weight:

Forged wheels are typically lighter than cast wheels. The forging process allows for precise shaping and the removal of excess material, contributing to reduced weight. Again, it takes more metal for a cast wheel to meet the strength-to-weight ratio of a gorged wheel, so, spokes get thicker and heavier in cast wheel designs.

5.Cost:

Forged wheels are more expensive to manufacture, making them generally more expensive for consumers.

Cast Wheels:

1.Manufacturing Process:

Cast involves pouring molten metal into a mold and allowing it to solidify. Cast wheels are formed by filling molds with molten aluminum.

2.Material Characteristics:

Cast wheels are made from liquid metal that solidifies in the mold. The material may have slight variations in grain structure and may contain porosity.

3.Strength:

Cast wheels are generally not as strong as forged wheels due to the casting process, which may introduce porosity and other inconsistencies.

4.Weight:

Cast wheels can be heavier than forged wheels, as the casting process may not allow for as much precision in shaping and material removal.

5.Cost:

Cast wheels are more cost-effective to produce, making them a more affordable option for many consumers.

Conclusion:

Choosing between forged and cast wheels depends on factors such as budget, intended use, and preferences. For high-performance or racing applications where strength and weight are critical, and failure is not an option, forged wheels are the standard. Cast wheels, on the other hand, are more commonly used for everyday vehicles where actual performance is not a consideration.

Copycat car wheels or counterfeit car wheels have caused many tragedies.But if you are buying a large-scale forged car wheel, then don't worry about using it.In fact, in terms of strength, large-made car wheels are stronger than original car wheels, even though they are lighter.

As for the service life, it depends on whether you switch to a low flat ratio tire.If the tire specifications remain the same as the original factory, then just use it with confidence.Remember that the premise is to use genuine forged car wheels.However, if you switch to low-flat-ratio tires, you need to be careful. If the flat-ratio is lower than 40, don't try difficult actions such as high-speed pit punching and speed bumps.Slowing down honestly is good for tires, wheels, shock absorbers, tower tops and even the body.Lightweight automobile wheels are actually an effective means to reduce the quality of non-spring loads. This will make the bounce under the spring more neat. High speed will not be “light”, but will be more stable.The braking distance will theoretically be shortened, but I haven't tested it specifically, and I can't feel it.As for steering, it will definitely help, but it is also difficult to quantify.What is energized and can be felt is the acceleration of performance improvement.

When shopping for aftermarket wheels, you'll often hear the term "forged" used as a selling point. Many assume "forged" automatically means "stronger," but that's not always the case. Understanding the true characteristics of forged wheels can help you make a better decision for your vehicle.

What Are Forged Wheels?

Forged wheels are made from a single block of aluminum that is heated and pressed under extreme pressure into a wheel shape. This process creates a dense, grain-aligned structure, which can enhance strength and reduce weight compared to cast wheels.

Strength vs. Durability

While forged wheels are known for their high strength-to-weight ratio, "forged" doesn’t always mean "indestructible." The real advantage lies in their ability to be both lightweight and strong, making them ideal for performance vehicles. However, their hardness can sometimes make them more brittle under extreme impacts compared to some high-quality cast or flow-formed wheels.

Why Choose Forged Wheels?

a) Lightweight – Less unsprung weight improves handling and acceleration.

b) Performance-Optimized – Preferred for track use and high-speed stability.

c) Premium Finish – Often come with high-end finishes and custom designs.

"Forged" doesn't automatically mean "stronger in every way"—it means optimized for performance where weight savings and rigidity matter most. If you're looking for the best balance of strength and weight reduction, forged wheels are an excellent choice. But for everyday driving or rough roads, other manufacturing methods might offer better durability for the price.

Any interests, feel free to contact us sales09@zwwheels.com. We could provide OEM&ODM service.