The linear wear instrument is mainly used for the wear resistance performance of profiled surface and polished surface characteristics products. The dry abrasion test and wet abrasion test can be applied to plastic, auto parts, rubber, leather and textile, electroplating, and freely dismountable components. , paint products, printing patterns and other products tested.
Standards compliant:
ASTM D3884, ASTM D1175, ASTM D1044, ASTM D4060, TAPPI T476, ISO 9352, ISO 5470-1, JIS K7204, JIS A1453, JIS K6902, JIS L1096, JIS K6964, DIN 52347, DIN 53109, DIN 53754, DIN 53799, Conforms to CE standards, with CE security logo.
main feature:
1. Simulate real conditions of use,
2. It can set parameters such as moving distance, speed, number of revolutions, load, etc.
3. Choose from a variety of different wear media and accessories: sample holders and other optional accessories
4. It can be used in conjunction with the determination of scratches, damage levels, alcohol resistance test, coin scratch resistance, etc.
5. To ensure the stability and accuracy of the test: The general grinding head, which is the size and shape of the eraser head at the end of the pencil, is made of high-quality abrasive material and ensures the stability of the test. The laser guides the test sample. Place the position to ensure the accuracy of the test.
What are the factors that affect the wear resistance of silk fabrics?
I. Related Overview:
1. The test methods for the abrasion resistance of silk fabrics are mainly two major categories, namely actual wear test and laboratory instrument test, and laboratory tests can usually be performed with a linear wear instrument.
2. The abrasion of the silk fabric is usually started from the outer layer of the yarn flexure peak or the coil convex arc section protruding from the surface, and gradually develops inward. When some of the fibers that make up the yarn are broken by abrasion, the fiber ends are raised and the surface of the fabric is fluffed. As the wear progresses, some of the fiber debris gradually falls off the surface of the fabric, and some of the fibers are pulled out of the yarn and become locally thin. As a result, the fabric becomes thinner, the quality is reduced, the structure is destroyed, and holes are formed. In the end, fabrics suffered serious damage due to a drop in residual strength and were subjected to a sudden, large external force, and thus lost the value of continued use.
3. Silk fabrics have excellent wet performance and health care functions, and thus become the first choice for summer clothing. However, in the process of using silk clothing, due to different occasions, it will be affected by different external factors, and gradually reduce the value of use, resulting in the final damage. The fabric is often rubbed against the objects that are in contact with it. When it is washed, it is rubbed with water, temperature, soap and other objects. When the outerwear is worn, it is exposed to sunlight. Underwear is used with sweat. Some work clothes also work with chemistry. Reagents or high temperature play a role, so the damage of the fabric is caused by the combination of various factors such as mechanical, physical, chemical and micro-organisms during use. The property of the fabric to resist damage under certain conditions of use is called the abrasion resistance of the fabric. The abrasion resistance of the fabric has a great influence on the sewing process of the fabric, the feel and touch of the fabric. The drape of fabric refers to the drooping performance of the fabric under the influence of its own weight, rigidity and softness, etc. Fabric drapability can affect the performance of clothing styling and visual aesthetics. Then, the following focuses on the relevant factors affecting the abrasion resistance of silk fabrics.
Second, the influencing factors:
1. Influence of Density When the actual contact area between the fabric and the contacted object increases, the local stress on the contact area decreases. The part of the fabric in which the yarn is actually in contact with the abrasive is called the support point. If the area of ​​each support point does not change so much and there are many support points per unit area of ​​the fabric, the local stress on the contact surface between the fabric and the abrasive must be weakened. Reduce the degree of wear. Other factors remain the same. As the density of the fabric increases, the number of interwoven yarns per unit area increases, and the number of restraining points on the fibers increases. Fibers are not easily extracted from the abrasion process, and the softness of the fabric is also poor. Fabric weaving When placed, the less likely it is to droop, the drape performance of the fabric is poorer.
2. The effect of thickness The thickness of the fabric is related to a number of parameters, and therefore drape and abrasion resistance are also different. The thicker the thickness of the fabric is, the better the abrasion resistance is; but the thickness of the fiber in the large fabric is more cohesive, which is not conducive to the drape of the fabric. The thicker the fabric, the worse the drape.
3. The effect of square meter weight increases the square meter weight, and the number of yarns and fibers in the unit area also increases, which increases the interweaving point of the fabric, so that the yarn and the fiber are not easily extracted during the abrasion process, and the wear resistance is enhanced. The contrary is not conducive to the natural sagging of the fabric.
4. The influence of fineness The yarn with a larger diameter contains more fibers, and the yarn can be disintegrated after multiple fibers are broken during wear, which is favorable for the flat grinding of the fabric. The number of fibers in the yarn is large, and the number of fiber cohesion increases, which is not conducive to the natural sagging of the fabric.
Third, maintenance:
1. The instrument must be cleaned and cleaned externally on a regular basis to ensure the cleanliness of the test instrument;
2. Check the test instruments regularly to see if any abnormalities occur;
3, the use of personnel in the use of the process, should be used in accordance with the correct use, not illegal use, so as not to damage the instrument, leading to shorten the life of the instrument;
4. After using the test equipment, all users must put the instrument in place and clean the instrument to ensure the instrument is clean.
5. When the instrument is not in use, the power of the instrument should be turned off and the instrument should be kept clean.

Exhaust Muffler

Mufflers are installed within the Exhaust System of most internal combustion engines. With high performance SS304 stainless steel universal mufflers can give you added power and a racing sound over stock mufflers. With high-temperature fiber glass wool and stainless mesh wrapped around the perforated hole.

The muffler is engineered as an acoustic soundproofing device designed to reduce the loudness of the sound pressure created by the engine by way of acoustic quieting.

The majority of the sound pressure produced by the engine is emanated out of the vehicle via the same piping used by the silent exhaust gases. The emitted noise is abated by a series of passages and chambers lined with roving fiberglass insulation and/or resonating chambers harmonically tuned to cause destructive interference, wherein opposite sound waves cancel each other out.


stainless steel perforated tube, Universal design, Easily installed: welded to the exhaust system or tube ends can be added for clamping installations, to connect muffler and Catalytic converter..

Exhaust Muffler

Exhaust Muffler,Exhaust Silencer,Loud Mufflers,Dual Exhaust Muffler