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无缝异型钢管的生产分类与规格类型

发布时间:2019-03-27人气:38

无缝异型钢管的生产分类与规格类型:无缝异型管是将带钢挤压成型而成。塑性是指金属材料在载荷作用下,产生塑性变形(永久变形)而不破坏的能力。硬度是衡量金属材料软硬程度的指针。目前生产中测定硬度方法最常用的是压入硬度法,无缝异型钢管是用一定几何形状的压头在一定载荷下压入被测试的金属材料表面,根据被压入程度来测定其硬度值。

Production Classification and Specification Type of Seamless Special-shaped Steel Pipe: Seamless Special-shaped Steel Pipe is formed by extrusion of strip steel. Plasticity refers to the ability of metal materials to produce plastic deformation (permanent deformation) without destroying under load. Hardness is the index to measure the degree of hardness and softness of metal materials. Pressure hardness method is the most commonly used method to measure hardness in production. Seamless special-shaped steel pipe is pressed into the tested metal material surface with a certain geometric shape of the pressure head under a certain load, and its hardness value is measured according to the degree of pressure. 常用的方法有布氏硬度(HB)、洛氏硬度(HRA、HRB、HRC)和维氏硬度(HV)等方法。前面所讨论的强度、塑性、硬度都是金属在静载荷作用下的机械性能指针。实际上,许多机器零件都是在循环载荷下工作的,在这种条件下零件会产生疲劳。以很大速度作用于机件上的载荷称为冲击载荷,金属在冲击载荷作用下抵抗破坏的能力叫做冲击韧性。

Common methods include Brinell hardness (HB), Rockwell hardness (HRA, HRB, HRC) and Vickers hardness (HV). The strength, plasticity and hardness discussed above are all mechanical performance indicators of metals under static loads. In fact, many machine parts work under cyclic loads, under which fatigue occurs. The load acting on the machine parts at a great speed is called impact load, and the ability of metal to resist damage under impact load is called impact toughness.


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