Shenzhen-Rui Da Hardware Products Co., Ltd. / diameter / outer diameter of the spring / compression spring Shenzhen-Rui Da Hardware Products Co., Ltd. specialized in producing springs, car parts, screws, stampings and other four hardware products. Spring Advantage: can produce 0.15 precision small diameter spring, the maximum diameter of 50mm. Spring include: compression spring, extension spring, torsion spring, battery spring, shaped spring. Car parts Advantages: Can be customized machining high-precision non-standard metal car parts, automobile parts, CNC car parts, copper, iron, aluminum, stainless steel and other materials. Screw Advantage: Spot GB screws, can be customized non-standard screws. Stamping advantage: You can produce all kinds of hardware, battery slice, punch and other pieces. Spring material has a high carbon steel, stainless steel, piano wire, nickel wire, copper wire, aluminum wire, 65Mn, 50CrVA, 60Si2Mn other materials. Cold forming 1) disposable cold forming process automation skills. Cold forming machine has been carried out to 12 claws. In (0.3 to 14) mm wire within the scope of a function at 8 claw shaped molding. To carry out the direction of the forming process equipment: ① forming speed progress, mainly in the speed of progress trend is forming apparatus, namely consumption efficiency; ② refined and reinforced the effect of heat treatment equipment parts to progress progressive equipment durability; ③ increasing the length of the sensor and laser range finder, CNC forming machine to stop the automatic closed-loop control of manufacturing processes. 2) The range of cold forming process can. Large diameter spring coiling machine, the maximum size of up to 20mm, = 2000MPa, convoluted than 5. Reducing or Equal material Minic-Block cold spring and eccentric spring forming process still has limitations. Thermoforming 1) thermoforming process speed ability. China in the last (9 ~ 25) mm Specifications forming just CNC2 axis thermal spring coiling machine, maximum speed 17 per minute. In contrast with the large gap between the developed countries. 2) Big Spring thermoforming process control skills. Because only CNC2 axis thermal spring coiling machine, which outline the role of controlling at least three directions, the accuracy is poor; and all non-automatic bar rotation control and adjustment mechanism, so the hot coil spring forming process and to a lower extent. Therefore, the degree of accuracy of the spring is an elastic spring to work in the mechanical parts. Parts made of an elastic material deforms under external force, the external force is removed after restitution. Also known as "spring." Usually made of spring steel. Complex and diverse types of springs, according to the shape points, the main coil spring, spiral spring, plate spring, shaped spring.