| The use effect of high temperature resistant polyurethane roller
The use effect of high temperature resistant polyurethane roller.
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created:
Jan 04,2021
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The use effect of high temperature resistant polyurethane roller The polyurethane roller used now includes a hub and a bearing in the hub, and a polyurethane bead layer made of low free polymer. The hub is provided with an annular wall and an inner wall, an annular outer wall and two side surfaces. The inner wall surface and the surface of the outer wall are connected. The annular outer wall surface is provided with a pair of annular grooves. The polyurethane layer is coated on the outer wall of the annular wall. The annular surface and the filling groove are compared with the prior art. The structural design of the wheel hub is now optimized, so that the dynamic performance and load of the entire roller are optimized to ensure a low life and capacity can be greatly improved. When the polyurethane roller is maintained, the cast iron of the roller core is degummed, and the maintenance of the cast iron of the roller core is also the key to prevent polyurethane The core of the roller is removed. In order to ensure a good mixing of the polyurethane elastomer and the iron core, it is necessary to perform maintenance treatments on the iron core, such as etching and removing oxides, using organic matter to remove oil, etc., to ensure that the surface is maintained without dirt . Mechanical application is the most effective way to improve mechanical strength. Through maintenance technology, the surface roughness of the core increases, and the surface area of the joint interface can be increased several times or even dozens of times, as well as the bonding strength between the polyurethane and the metal core. Corresponding improvement, the uneven surface produced by the technical process leads to more occluded joints between the polyurethane and the iron core to improve the strength of the joint. In the roller manufacturing process, this method is insufficient, and the core Air bubbles are formed on the surface to reduce the strength of the joint. Due to the limited pouring time, the pouring time must be shortened as much as possible.
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