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Hot read | polyurethane casters functional characteristics

by:Dajin caster     2020-04-29
Pu castor, is a kind of a material between general rubber and plastic, this is the wear resistance of the elastomer, and non-toxic to human body, and can completely biodegradable, don't need to add carbon black and some have carcinogenic effect of rubber compound, is the ideal material for manufacturing tire tread. Pu castor feature is within the scope of the hardness of high flexibility, good mechanical strength, oil resistance and ozone resistance, good low temperature performance. Take a look at the four advantages of polyurethane wheels. Hot read | pu castor features a wide adjustable range, pu castor performance a number of physical and mechanical performance indexes can be adjusted through the selection of raw materials and formulations, flexible changes within a certain scope, so as to meet the unique requirements of users on the product performance. Such as hardness, is often the user an important index of products, polyurethane elastomer can be made into Shao Er A hardness of the 20 or so soft printing rubber roller, and can be made more than 70 Shao Er D rigidity rolling roller, this is the general elastomer material is difficult to do, can suit the needs of different users. Polyurethane elastomer is composed of many flexible chain segment and rigid chain segments of polymer materials, with the improvement of rigid chain segment ratio and the increase of the density, sex group elastomer original strength and hardness will be increased accordingly. Pu castor adjustable scope will be large. Second, pu castor wear-resisting performance is superior in the presence of water, oil and other wetting medium work conditions, the wear resistance of polyurethane casters are often several times to dozens times of ordinary rubber materials. Metal materials such as steel, although very hard, but doesn't have to wear; Other rice huller rubber roller, such as milling, coal preparation with sieve sieve plate, stadium track the runway, forklift truck crane dynamic oil seal, elevator wheels and wheel roller skates, etc are also polyurethane elastomer. Need to mention here is that to improve the low and middle hardness, the friction coefficient of polyurethane elastomer parts, improve the bearing under the load of wear-resisting performance, can add a small amount of sulfide in this type of polyurethane elastomer aluminum and graphite or silicone oil lubricant, such as three, pu castor processing methods diversity, for polyurethane elastomer can be the same as general rubber plastication, mixing and vulcanization process molding ( The MPU) ; Also can be made into liquid rubber, mould pressing or spraying, sealing, centrifugal casting molding ( The CPU) ; Can also be made from grain, like common plastic, use process such as injection, extrusion, calendering, blow molding, The CPU) 。 Mold or injection molding parts, within a certain range of hardness, cutting, grinding, drilling and other mechanical processing. The applicability of the process, the diversity of pu castor is very extensive, application domain expands unceasingly. Four, oil resistance, ozone resistance, aging resistance, radiation resistance, good low temperature resistance, good acoustic, stick relay is strong, biological compatibility and blood compatibility. These advantages is polyurethane elastomer in military industry, aerospace, acoustics, and biology extensively in the fields of application. The main characteristic of polyurethane casters: 1, the function can regulate the size. A number of physical and mechanical function target can be based on the original data selection and adjustment of formula, within the size must be change, and then meet user demand for products function don't same. 2, wear-resisting function is superior. Especially in the presence of wet media such as water, oil, operation conditions, its wear resistance is usually several dozen times the ordinary rubber materials, it is worth noting that to lower the hardness of the friction coefficient of polyurethane elastomer parts progress, improvement under the bearing load of wear-resisting function, can increase the minority in this type of polyurethane elastomer disulfide aluminum and graphite lubricant. 3, processing methods diversity, wide applicability. Not only can pu castor and general rubber the same choose plasticate, vulcanization technology molding; At the same time it also can be made from grain, the same as the general plastic, with injection molding, extrusion, calendering, blow molding technology. 4, ozone resistance, radiation resistance, good low temperature resistance, good sound permeability, excellent biocompatibility and blood compatibility. Choose suitable wheel rack first consider the weight of the caster wheel bearing such as supermarkets, schools, hospitals, office buildings, hotels and other places, because the floor is good, smooth lighter, and handling of goods ( Each trundle bearing in 10 - 140公斤) , suitable to select (with a thin plate 2 - 4毫米) Stamping wheel rack plating, the wheel frame is light, flexible operation, quiet and beautiful, the plating wheel frame in accordance with the ball bearing arrangement is divided into double row bead and single bead. If often move or application of double row in the bead. In the place such as factories and warehouses, cargo handling very frequently and heavier load ( Each trundle bearing in 280 - only 420公斤) Chooses to suitable for thick steel plate, 5 - 6毫米) Stamping hot forging and welding of double row ball wheel. If used for carrying heavy things such as textile factory, automobile factory, machinery factory and other places, because the charge big factories within walking distance, Each trundle bearing in 350 - only 1200公斤) , therefore, should choose to thick steel plate, 8 - 12毫米) After cutting wheel frame, welding activities wheel rack flat ball bearing and ball bearing on the floor, make the castor can withstand the heavy loading, flexible rotation, impact resistance, etc.
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