What is the main difference between the manufacturing process of Raw-Edge V Belts and traditional V belts

In the field of industrial transmission, the performance of belts directly determines the efficiency, reliability and service life of mechanical equipment. The fundamental reason why Raw-Edge V Belts stands out in high-power, high-speed transmission is that it has a completely different manufacturing process from traditional cloth V Belts. This fundamental difference in process gives Raw-Edge V Belts a unique structure and excellent performance.

Traditional V-belt manufacturing process: winding and vulcanization
The manufacturing process of traditional cloth-covered V-belts is relatively intuitive, mainly using winding and vulcanization. The core step is to wrap tension lines on a core mold, fill with rubber, and cover a layer of special canvas on the outermost layer.
1. Canvas Cover
This is the most prominent feature of the traditional V-band. During the molding process, the exterior of the belt is wrapped in a layer of beveled canvas. The main function of this layer of canvas is to protect the internal structure of the belt, increase the wear resistance of the sides, and provide a certain amount of friction.
2. Overall sulfurization
After all the materials are wound, the belt is placed in the mold for overall vulcanization. During vulcanization, the rubber material cross-links and cures to form the final belt structure. Finally, through the cutting process, the annular belt is divided into multiple independent V-belts.
3. Process limitations
The limitation of this process is that the canvas layer creates additional friction when driven, resulting in energy loss and temperature rise. At the same time, the belt cut after the whole vulcanization has a fiber cut on the sides, which is easy to bleed due to friction during work, affecting the transmission efficiency and stability.

Raw-Edge V Belts Manufacturing Process: Molding and Fine Cutting
The manufacturing process of Raw-Edge V Belts is a technological innovation, with its core lying on molding and precise edges.
1. Precision mold design and molding
The manufacturing of Raw-Edge V Belts begins with precision-designed molds. Before forming, materials such as rubber mixture, tension lines, etc. are accurately placed in the mold with toothed grooves. The entire belt structure, including the molding teeth at the bottom, the glue on the top and the tension line in the middle, are molded at one time in the mold. This process ensures the dimensional accuracy and consistency of the belt.
2. Accurate proportioning of high-performance materials
Raw-Edge V Belts has higher requirements on materials. Its rubber formula usually contains special synthetic rubbers, high-performance reinforcers and anti-aging agents to ensure the belt has excellent heat, oil and anti-aging properties. The tension line uses a high-modulus polyester wire to ensure that the belt is extremely deformed under heavy load and has a stable transmission. These materials are accurately weighed and mixed before molding, ensuring uniformity in performance of each belt.
3. Unique molded tooth structure
The most core feature of Raw-Edge V Belts is the molded teeth. This toothed structure is not cut after vulcanization, but is formed directly in the mold. The molded tooth structure not only gives the belt excellent flexibility, allowing it to adapt to smaller pulley diameters, but also increases the heat dissipation area and effectively reduces the working temperature rise. In addition, this structure also ensures that the internal stress distribution of the belt is more uniform when bending, significantly improving the bending fatigue life of the belt.
4. No canvas cladding and precise edges
Unlike traditional V-belts, Raw-Edge V Belts does not use canvas wrap during manufacturing. The side of the belt is the molded native colloidal surface. After vulcanization is completed, the annular belt is accurately cut to the desired width through high-precision cutting equipment. The accuracy of this cutting process is crucial, ensuring flatness on the sides of the belt, reducing jitter and sliding losses during transmission, and improving transmission efficiency.

Performance leaps brought about by process differences