Pyramid spring, Xu-feng Hardware Factory (certified), the spring is provided by Dongguan City, Xu-feng Hardware Products Factory. Dongguan City, Xu-feng Hardware Products Factory (www.dglijing168.com) is specialized in the "spring-like, lathe category, stamping class, spring, torsion spring, retainer, battery spring, shaped bomb" of the enterprise, the company receives "honesty, hard service" concept, to provide you with the highest quality products and services. Welcome to inquire! Contact: Miss Liu. Dongguan City, Xu-feng Hardware Products Factory is a professional manufacturer of metal springs, lathe parts and stamping parts of the enterprise, the factory has advanced technology and equipment toy doll springs, modern plant and professionals pyramid spring, selling products around the world. Spring classes thematic light spring is an ideal physical model, in the "Exam" involved in its knowledge points are: ① deformation and elastic, Hooke's law (the knowledge requirements for grade B); ② potential bomb (A-level requirements), spring oscillator and other spring will not change suddenly, it's going to go through a process of change, which is deformed by changing the spring to gradually make the decision. Therefore, to know at a certain instant action (eg collision) stretch will remain unchanged. Stretch is a variable force, when demand elasticity and elastic impulse work done, not directly with the impulse type and function definitions, generally the amount of kinetic energy theorem and the theorem calculations. The elastic deformation of the spring varies in direct proportion with the spring, so it causes the object acceleration, velocity, momentum, kinetic energy change is not a simple monotonic relationship, tend to have a critical value. If the spring is used as an object within the system, spring will not do within the system object does not affect the system acting mechanical energy. Spring is very much useful Oh! Dongguan City, Xu-feng Hardware Products Factory is a professional manufacturer of metal springs, lathe parts and stamping parts of the enterprise, the factory has advanced technology and equipment, modern workshops and professional personnel, products sold around the world. Disc spring washer disc spring washer also 名贝勒维尔 spring washers, inventor Frenchman Belleville. DIN6796 disc spring washers (HDS series) is designed for connecting bolts and screws lock washer. It is designed and manufactured according to DIN 6796, for medium or high strength bolts, screw connection. Large load bearing and elastic recovery makes HDS series is very effective, bolt tension can withstand relaxation due to the following causes: wear wearing parts, creep, relaxation, thermal expansion, contraction, or seal compression. HDS series elastic effect of the screw increases several times, it can effectively replace ordinary spring washers, but not used as a lock washer, flat washer. Because HDS series can be combined or superimposed on the disc springs. Involution combinations can increase the amount of deformation of the disc spring group, the spring force increases the disc spring combinations composite group. Ideal installation is flattened as possible, closer pressed flat tension springs, Zhang torque increase sooner, without a torque wrench, you can get the proper bolt tension.