Jiangxi Hengjiu has been focusing on motorcycle chain manufacturing for more than 20 years, relying on a professional technical team and sophisticated production equipment, consistently producing high-quality motorcycle chains, and providing reliable products and high-quality services to global customers. We have an experienced professional metallographic analysis team, committed to controlling quality from the source, carefully selecting high-quality raw materials through advanced testing technology and rigorous screening processes to ensure that the content of impurities is minimized. Throughout the chain manufacturing process, we employ high-precision processing equipment and strict process standards to ensure that every link meets precision tolerance requirements. At the same time, we continuously optimize product performance through multiple quality inspection systems and durability tests, thereby significantly extending the service life of the chain and providing customers with more reliable and durable high-quality products.
In the punching and blanking process, we use an advanced continuous high-speed precision punching machine, equipped with a concave die precision machined by BMW-3000 CNC wire cutting machine, and the mold accuracy is strictly controlled within 0.003mm to ensure the high precision and consistency of the chain plate stamping process, thereby significantly improving the overall quality of the chain plate. In the chain plate punching process, we use 160T-320T continuous high-speed precision punching machine equipment and high-precision molds to achieve an astonishing accuracy of 0.002mm, which fully meets the strict requirements of high-end chains for dimensional accuracy. In addition, our automatic pin cutting machine uses high-quality tungsten steel die cutting dies to perform high-speed cutting at a speed of up to 500 times/minute, while strictly controlling the length deviation within 0.1mm, ensuring that each chain plate has excellent dimensional stability and surface finish, providing a solid guarantee for the high performance and long life of the final product.
In the heat treatment of parts, we use an advanced continuous production line with large mesh belts, which has significant advantages such as precise and controllable atmosphere adjustment system, fully automatic conveying function, and uniform and stable quenching hardness control, ensuring that each batch of parts can meet consistent high quality standards. At the same time, we are equipped with a tilting converter, combined with the innovative carbonitriding process, which not only effectively reduces the process temperature and saves energy consumption, but also significantly improves the comprehensive performance of the parts, making them have higher wear resistance, toughness and fatigue resistance. In addition, this process significantly reduces the deformation coefficient of parts during heat treatment, further ensuring the dimensional accuracy and stability of the product.
In the chain assembly process, we integrate the three traditional processes of joint dismantling, pre-drawing and assembly into an efficient and fully automatic production line. The newly introduced high-speed automatic assembly machine, with an assembly speed of up to 18,000 knots/h, adopts advanced hole positioning and feeding technology to ensure that the chain is not twisted or misaligned during the assembly process, significantly improving production efficiency and product consistency. In addition, we have recently introduced a high-precision image detector to achieve non-contact chain quality inspection. This equipment can accurately measure the size, shape and integrity of the chain, comprehensively ensuring that the chain performance meets international standards, while greatly improving inspection efficiency and accuracy, providing reliable quality assurance for every product left the factory. Through intelligent upgrades, we not only optimize the production process, but also create higher value for customers with excellent quality.
In the chain riveting process, the traditional parallel rivet on both sides is improved to a four-corner riveting design. This innovation not only makes the chain more refined and beautiful, but also significantly improves the firmness of the outer joint connection and the stability of the overall structure, further enhancing the durability and reliability of the chain. The introduction of high-precision hydraulic four-square riveting machine, equipped with a fully automatic feeding system, riveting speed up to 10,000-12,000 knots/hour, greatly improves production efficiency. At the same time, the equipment adopts an advanced riveting force precision control system to ensure that the riveting force is uniform and consistent, so as to ensure that every section of the chain achieves optimal performance. Through this series of technological upgrades, we provide customers with chain products that are both beautiful and high-performance.
In the packaging and oiling process, we use a high-standard process, and all motorcycle chains are soaked in special "kilogram oil" to ensure that the chain surface is fully lubricated and forms a uniform protective film. The soaked chain is suspended and cooled, after which it enters the fully automatic packaging line. Equipped with a dual frequency conversion computer-controlled rapid packaging machine, the traditional manual bagging and sealing process is fully upgraded to automatic operation. This improvement not only significantly improves packaging efficiency, but also makes the packaging effect smoother, more consistent, and tidier, fully demonstrating the high-end quality of the product.
