国产精品IGAO视频网网址,亚洲人午夜射精精品日韩,久久久无码精品亚洲日韩按摩,又爽又黄无遮拦成人网站,精品熟女日韩中文十区,国产精品成人高潮av,日韩精品国产精品国产,开心久久婷婷综合中文字幕,欧美精品亚洲精品日韩专区一乛方,欧美人与性囗牲恔配

The product has the tensile strength and toughness of steel, the conductivity and high frequency characteristics of copper, and has the advantages of saving copper material and reducing cost. The copper-clad steel wire with diameter of 0.09-1.60mm and conductivity of 15% - 40% produced by our factory can also be produced according to the requirements of customers, with complete testing equipment to ensure the quality

The yield strength σ s and the deformation resistance scale may be small, so that the unit deformation force can be reduced correspondingly, so as to prolong the die life. The cold deformation property of steel is better, that is to say, the material should have better plasticity and lower hardness, which can prevent the product from cracking in a larger deformation degree. The work hardening sensitivity of steel should be as low as possible, so as not to cause too much deformation force in the process of cold heading deformation.

Drawing die series include "natural diamond drawing die", "imported polycrystalline drawing die", "domestic high crystal drawing die", "domestic polycrystalline drawing die" and "hard alloy drawing die". Our company's mould material selection is excellent, the drawing die core adopts the products of famous manufacturers; the process is exquisite, and the products have the characteristics of strong wear resistance and high finish. It is mainly used for drawing copper wire, copper clad steel wire, iron wire, stainless steel wire, aluminum magnesium alloy wire, etc.