1. Roller core processing is both a step and a foundation
Before processing polyurethane coated wheels, the first step is to handle the roller core, which is the core support part of the coated wheel. This step may seem simple, but it is actually crucial.
If it is a brand new iron core, it is necessary to first clean the surface of oil stains, dust, and impurities attached during transportation to avoid affecting the adhesion of the subsequent coating layer. Special cleaning agents are usually used for oil removal to ensure a clean and residue free surface.
If it is an old iron core, the original old coating layer should be removed first, and then the residual adhesive layer and impurities on the surface of the iron core should be cleaned. Only by removing the old glue can the new polyurethane material be more firmly bonded to the iron core.
2. Surface roughening treatment determines the firmness of the adhesive coating
After the cleaning of the roller core is completed, the next step is usually to roughen the surface of the iron core. The purpose of doing so is to increase surface adhesion and make the polyurethane material bond more stably with the metal surface.
If the surface of the iron core is too smooth and the biting force between the coating layer and the substrate is insufficient, it is more likely to cause delamination during heavy load, impact, or long-term rolling in the later stage.
After sandblasting, polishing, or other roughening methods, the surface of the iron core will form a structure more suitable for bonding, which is also an important step in improving the stability of the finished product.
3. Gluing is the core process
After completing the pre-processing, the iron core can enter the encapsulation stage. This step is the core of the entire processing flow, directly determining the performance of the rubber coated wheel.
When packaging, it is necessary to choose suitable polyurethane raw materials and process solutions according to the product’s purpose. Different formulations can affect the hardness, elasticity, wear resistance, and load-bearing capacity of rubber coated wheels.
After the encapsulation is completed, it usually needs to go through a certain period of curing or vulcanization process to make the bonding between the polyurethane layer and the iron core more tight. This process cannot be omitted or rushed, otherwise it will affect the strength and service life of the finished product.
For rubber coated wheels, avoiding delamination and cracking in the later stage is a key issue that must be controlled in production. Therefore, both the quality of raw materials and process parameters need to be maintained stable.
4. Polish the product to meet the final size requirements
After the encapsulation is completed, the product cannot be shipped directly and needs to be polished and trimmed. Due to different devices and usage scenarios, the requirements for the outer diameter, width, surface accuracy, and wheel shape of the rubber coated wheel vary.
By polishing, the rubber wheel can be processed to the size range required by the customer, while making the surface smoother and ensuring more stable rotation during subsequent use.
This process usually involves the use of machining equipment such as machine tools, which require high precision, especially when used in conjunction with industrial equipment. Excessive dimensional deviation may directly affect the operating effect.
5. Process control determines the quality of finished products
From the overall process, the processing of polyurethane coated wheels is not a single process, but the result of multiple links working together. Whether the iron core is cleaned, whether the surface is roughened properly, whether the coating is uniform, and whether the later polishing is accurate all affect the quality of the final product. For manufacturing enterprises, the key to producing rubber coated wheels with stable performance and long service life is to do every process well, rather than just focusing on the final molding effect.
Conclusion:
Simply put, the processing flow of polyurethane coated wheels mainly includes several steps: roller core treatment, surface roughening, coating, curing, and polishing. The process may seem clear, but every step cannot be taken lightly. Only when the raw materials, processes, and processing controls are in place can high-quality polyurethane coated wheels be made that are wear-resistant, sturdy, and not easily detached. For the purchaser, understanding these basic processes also helps to more accurately assess product quality and supplier level.
Post time: Jun-01-2026
