High Performance Polyurethane Wheel

Yantai Zhengyuan Polyurethane Co., Ltd. was established in 2007 and has been committed to the research and development, production, and sales of polyurethane products since its inception. Our company is located in Yantai, Shandong, the birthplace of polyurethane products. We have unique advantages in obtaining technical support and technological innovation. China's large raw material manufacturer Wanhua is also located here, saving significant costs in raw material transportation. Our High Performance Polyurethane Wheel has received unanimous praise from customers for its superior quality and reasonable price. Welcome to visit the factory anytime

Attention should be paid during the pouring and forming process of High Performance Polyurethane Wheel
1) The mold must be cleaned and preheated to the specified temperature. Uneven preheating can lead to uneven vulcanization and internal stress of the product.
2) The pouring should be smooth and avoid introducing air. For large wheels, air can be displaced by tilting the casting or injecting from the center of the wheel hub.
3) The mold must have a good exhaust design, or use vacuum pumping or other methods to assist in exhaust after pouring, to prevent bubbles from appearing inside the product.
2. Sulfurization (curing) process of High Performance Polyurethane Wheel:
1) The vulcanization temperature curve needs to be rigorously validated. Usually divided into two stages:
a. Mold vulcanization: Maintain sufficient time at high temperature to preliminarily shape the product and achieve a certain strength before demolding. Insufficient time can lead to "tender skin" and the product is prone to deformation.
2) Post vulcanization: After demolding, the wheels must be kept in an oven at a certain temperature for a long time (such as 12-24 hours). This step is crucial to ensure complete reaction and maximize the mechanical properties (such as compression set, tensile strength), heat resistance, and dimensional stability of the product. Skipping or shortening post vulcanization is absolutely not allowed.

3. Treatment of wheel hub (insert)
1) Pay attention to the bonding strength between the wheel hub (usually made of metal such as steel, aluminum, cast iron) and polyurethane, otherwise it is prone to delamination
2) Thoroughly remove oil stains and impurities using solvents such as acetone, and thoroughly clean the surface.
3) The wheel hub must be preheated to near the mold temperature before being placed in the mold. Cold wheel hubs can cause the poured material to rapidly cool, resulting in reduced fluidity, inadequate filling of the joint surface, decreased bonding strength, and internal stress.
4) Coating adhesive: Apply specialized polyurethane adhesive evenly on the pre treated and preheated wheel hub to ensure that the adhesive does not expire and the coating is uniform without omission.

Hot Tags: high performance polyurethane wheel, China, manufacturers, factory, customized, low price, made in China, Polyurethane Wheel