Spring, Xufeng hardware, spring wire provided by the Dongguan City Xufeng Hardware Products Factory. Xufeng Dongguan City Hardware Products Factory (www.dglijing168.com) Guangdong Dongguan, spring leader, over the years, the company is implementing scientific management, innovation and development, the principle of honesty and trustworthiness, and satisfy customer needs. In Xufeng Hardware leadership with the staff warmly welcome all inquiries negotiations to create Xufeng metal products a better future. Xufeng Dongguan City Hardware Products Factory is a professional production 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. 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 (which requires knowledge of grade B); ② potential bomb (A-level requirements), the spring force of the spring oscillator, etc. can not be mutated, it changes to go through a process of disc springs, this is by changing the spring deformation to gradual decision. Therefore torsion spring, you know at a certain instant action (such as collisions) stretch will remain unchanged. Stretch is a variable force, while seeking impulses and elastic stretch of the work done, not directly with the impulse type and function definitions, generally the amount of kinetic energy theorem and the theorem calculations. The spring force of the deformation is proportional to the change, so it causes the acceleration of the object, velocity, momentum, kinetic energy changes are not simply a monotonic relationship, tend to have a critical value. If the spring is used as an object within the system, the spring will not do within the system object does not affect the system's acting mechanical energy of the spring is very much useful Oh! Xufeng Dongguan City Hardware Products Factory is a professional production 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. Reed material: high quality chrome alloy spring steel, this material has a high temperature in spring price, stiffness, long life and other characteristics. Material style: rounded edge rectangular cross-section shape, and generally at right angles to the edge of the rectangle different springs, a spring run at high speed can reduce stress concentration. Forced Treatment: Forced spring to do more than three times the processing, eliminating internal stress before use, will not happen again spring deformation, shortening fracture phenomena. Enhancement processing: After surface hardening spring peening to improve the strength of the stress concentration points, the spring extension of the fatigue life. Surface treatment: electrophoretic paint color using advanced technology, in line with European standards SOS, so that the paint surface of the product uniform, stronger adhesion. Production Standard: All springs are by ISO9001: 2000 quality standards for manufacturing into the Japanese Industrial Standard JIS and ISO10243 international standard two products