Polyurethane wheel

Coating wheels using polyurethane is one of the most advanced and widely used techniques in various industries, which is specifically used to increase lifespan and wear resistance. This process involves several specialized steps, each of which requires precision and technical know-how. In the following, these steps are fully explained.

In the first step of the coating process, the old wheel coating (which may be of various materials such as Teflon or rubber) must be completely removed. For this, the thermal burning method is used. Heat the wheels until the old coating is completely burned and destroyed. This method makes the adhesion between the previous coating and the base metal completely disappear and the metal surface of the wheel is ready for the next steps.

After burning the previous coating, the wheels are transferred to the sandblasting stage. In this step, the metal surface of the wheel is cleaned using sand particles or other abrasive materials with high pressure. Sandblasting not only completely removes any residue from the previous coating, but also roughens the surface of the metal, and this roughness helps improve the adhesion of the polyurethane to the metal. This step is done carefully to ensure that the metal surface is ready to accept the new coating.

After preparing the surface of the wheel, the stage of designing and making the mold begins. The mold is designed based on the exact dimensions and customer needs, and the thickness of the polyurethane coating is also determined at this stage. These molds should be designed in such a way that polyurethane is evenly distributed on the surface of the wheel and no discontinuity is created in the coating. Accurate molding is very important, because any error in the design of the mold can lead to the production of a product with unfavorable dimensions or low quality.

At this stage, liquid polyurethane is poured into the ready mold. Due to its physical characteristics, polyurethane has a very high resistance to wear and impact. Depending on the customer's needs, the coating thickness can be changed. Polyurethane casting must be done under controlled conditions to ensure that no bubbles or defects occur in the material.

After casting, the coated wheels are removed from the mold and enter the dimensional control stage. At this stage, the dimensions of the wheel and the thickness of the polyurethane coating are measured using precise tools to ensure their accuracy. Any deviation from the desired dimensions should be corrected at this stage, as these dimensions directly affect the final performance and efficiency of the wheel.

To achieve the final strength and hardness of the polyurethane, the coated wheels are placed in an oven to be subjected to controlled temperatures. This step completes the final polymerization of polyurethane and makes the coating reach its desired strength and resistance. The temperature of the furnace and the duration of placing the wheels in the furnace are determined depending on the type of polyurethane and the desired mechanical properties. After baking, the wheels are returned to ambient temperature.

After the wheels leave the furnace, the final inspection is done. In this step, parameters such as dimensions, appearance quality, hardness and surface resistance of polyurethane are checked and measured. If any defects or deviations from the standards are observed, the wheels are again subjected to the correction process. This step is critical, because the final quality of the product must be in accordance with the customer's needs.

At the final stage, the wheels are thoroughly cleaned so that no extra particles remain on them. Then the wheels are packed and ready to be sent to the customer. Proper packaging is essential to maintain quality and prevent damage during transportation.

• High resistance to wear: Polyurethane is one of the materials with extremely high resistance to wear, and for this reason, the lifespan of wheels covered with this material is much longer. • Flexibility and shock resistance: This material has good flexibility and can absorb shocks and mechanical pressures well. Resistance to environmental conditions: Polyurethane is highly resistant to moisture, temperature changes, and chemicals, which makes it an ideal option for use in harsh industrial environments. To order the product, it is enough to provide the desired metal diameter, wheel width and thickness to the experts of Zarineh Industry Equipment Group, so that the wheel can be produced as soon as possible. The price of the wheels depends on the mentioned dimensions, in this regard, you can benefit from a free consultation.