为了设计电镀零件的结构,并确定其最佳使用规范,必须知道镀层的机械性能(硬度、抗拉强度σ_B、屈服极限σ_(0.2)等)。已经知道,金属材料的σ_B、σ_(0.2)与硬度之间存在线性关系:σ_B=b HB;σ_(0.2)=a HB+C (1)对于动力设备用的极大多数钢和金属材料:σ_B=0.345HB(兆帕) (2)σ_(0.2)=(0.25HB-19)(兆帕) (3)在研究某些电镀层的机械性能时,同样 In order to design the structure of the electroplated parts and to determine the best practices, the mechanical properties (hardness, tensile strength σ_B, yield strength σ_ (0.2), etc.) of the coating must be known. It is known that there is a linear relationship between the σ B, σ 0.2 and the hardness of the metallic material: σ_B = b HB; σ 0.2 = a HB + C (1) Most steel and metallic materials used for power equipment: σ_B = 0.345 HB (MPa) (2) σ 0.2 (0.25 HB-19) (MPa) (3) In studying the mechanical properties of some plating layers, the same