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3Cr2W8V钢普遍用来作热锻模,但冲击韧度低、抗热疲劳性差,我厂用该钢制造的JS50Q系列摩托车左右曲柄热镦锻模平均寿命在2000件左右,有的甚至仅几十、几百件就出现早期脆断,呈龟裂的热疲劳裂纹。 据资料介绍,4Cr3Mo2NiVNb(称HD钢),具有高的高温强度,足够的塑韧性及耐热疲劳性,使用寿命较高,我们在JS50Q系列摩托车左右曲
3Cr2W8V steel is generally used for hot forging die, but low impact toughness, thermal fatigue resistance is poor, I plant with the steel JS50Q series motorcycle left and right crank upset forging dies average life expectancy at about 2000, and some even only a few Ten, hundreds of pieces of brittle fracture appeared early, cracked thermal fatigue crack. According to the information, 4Cr3Mo2NiVNb (called HD steel), with high temperature strength, sufficient plasticity and toughness and thermal fatigue resistance, high life expectancy, we JS50Q motorcycle series left and right