There are many materials used in stainless steel trolley casters. Compare the manufacturers with polyurethane, cast iron and cast steel, nitrile rubber wheels (NBR), nitrile rubber, natural rubber wheels and so on.
The scale of the adjustable agent of the stainless steel trolley caster wheel function is large, like hardness, which is often an important guideline for the user to the finished product. The polyurethane wheel elastomer can be made into a soft printing rubber roller with a hardness of 20 Shore A, or it can be made into a Shore A hardness. Hard rolled steel rubber roller with D hardness above 70, which is difficult for all elastomer materials. Polyurethane elastomer is a polar polymer material composed of a lot of flexible and rigid segments. With the increase in the share of rigid segments and the increase in the density of polar groups, the original strength and hardness of the elastomer will increase accordingly.
What are the materials used for the casters of the stainless steel trolley
Various processing methods and wide range of usability. Polyurethane elastomer can not only be molded by plasticizing, mixing, and vulcanizing technology just like general rubber; at the same time, it can also be made into liquid rubber, injection molding compression molding or spraying, potting, centrifugal molding; it can also be made into pellets, and Generally, plastic is the same, and it is formed by injection, extrusion, calendering, blow molding and other techniques. Molded or injection molded parts can also be processed by cutting, grinding, drilling and other mechanical processing within a certain hardness scale. The diversity of processing makes the suitability of polyurethane elastomers very wide, and the scale of application continues to expand.
Oil resistance, ozone resistance, aging resistance, radiation resistance, low temperature resistance, good sound permeability, strong adhesion, excellent biocompatibility and blood compatibility. These benefits are the reasons why polyurethane elastomers have been widely used in military industry, aerospace, acoustics, and biology.
casters have excellent wear resistance. Especially in the presence of water, oil and other humid media, its abrasion resistance is usually several to several tens of times that of general rubber materials. Although metal materials such as steel are tough and sturdy, they are not necessarily the most wear-resistant. For example, the large-scale water pump in the Yellow River irrigation area has the metal mouth ring and maintenance ring of the flow part through a lot of sand erosion. It took less than a few hundred hours for severe wear and water leakage, and the use of polyurethane elastomer-covered mouth ring and maintenance ring continued to run for 1800 hours without wearing. Others such as the rubber rollers of the rice hulling machine, the vibrating screen for coal preparation, the raceway of the moving field, the dynamic oil seal ring for the crane forklift, the elevator wheel and the roller skate wheel, etc. are also polyurethane. Where elastomers come in. The point to be mentioned here is that to improve the friction coefficient of low- and medium-hardness polyurethane elastomer parts and improve the wear resistance under load, a small amount of aluminum disulfide, graphite or silicone oil can be added to this type of polyurethane elastomer. And other lubricants.
