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本文对齿轮热锻模的损坏和某些特征进行了观察和分析。考查了热锻模的工作条件,测试了锻模用材的力学性能,结果表明:锻模早期失效是由于所用材料3Cr2W8V 钢在HRC50～52时,韧性和塑性过低所致。换用4Cr5MoVSi 钢后,在保证足够硬度的条件下,模具寿命可提高2～4倍。
In this paper, the damage and some characteristics of gear hot forging die were observed and analyzed. The working conditions of the hot forging die were investigated. The mechanical properties of the forging die were tested. The results showed that the early failure of the forging die was due to the ductility and ductility of the 3Cr2W8V steel at HRC50 ~ 52. After using 4Cr5MoVSi steel, under the condition of ensuring sufficient hardness, the mold life can be increased by 2 to 4 times.