弹簧钢丝的标准及用途(国外英文资料).doc

弹簧钢丝的标准及用途(国外英文资料) The standard and use of spring steel wire -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- In China, spring steel wire is a reference to ISO and JIS standard formulation, this paper based on ISO and JIS, spring steel wire were analyzed existing national standards and industry standards applicable scope, implicit difference among different groups, the production and use of spring steel wire has a reference value. Keywords spring steel wire, standard, applicable range Springs are the most common parts of the machinery industry and daily life. Spring used in the elastic scope, should return to its original position after unloading, hope plastic deformation as small as possible, so the wire should have high elastic limit, yield strength and tensile strength. The higher the ratio, the closer the elastic limit is to the strength of the tensile strength, and thus the more it increases the strength of the strength, the stronger the spring. Spring, relying on elastic deformation to absorb impact energy, so the spring wire doesnt have to have very high plasticity, but there are at least able to withstand the spring forming of plastic, toughness and enough to withstand impact energy. Spring is usually a long-term work under alternating stress, so there is a high fatigue limit and good resistance to creep and relaxation. Used in the specific environment of spring, the wire will also have some special requirements, such as: spring used in the corrosive medium, must have a good corrosion resistance. Precision instruments used in the spring, should have long-term stability and sensitivity, temperature coefficient, lower quality factors, aftereffect is smaller, the elastic modulus is constant. The spring that works under high temperature conditions is required to maintain su