论文部分内容阅读
锤锻模是在高温下强迫金属成型的一种工具。在成型过程中,由于锻件金属的流动,在型槽表面产生强烈的摩擦,同时型槽表面又经常承受反复的冲击及加热与冷却,因此型槽表面部分必须有足够的高温耐磨及耐热疲劳性能。对模体来说,又经常承受巨大的冲击载荷,要求一定的冲击韧性。因此,在如此不同的要求下,整体锤锻模的使用寿命往往不高,例如我厂使用的镍铬钼锻钢模中,型槽部分往往还很正常,但燕尾部分有时已经有开裂现象。近年来,随着机械工业的发展,锻模钢需用量日益增加,一
Hammer die is a tool that forces metal to form at high temperatures. In the forming process, due to the flow of forging metal, the groove surface produces strong friction, while the groove surface is often subjected to repeated impact and heating and cooling, the groove surface part must have sufficient high temperature wear and heat Fatigue performance. On the mold body, they often bear a huge impact load, requiring a certain impact toughness. Therefore, under such different requirements, the service life of the overall hammer die is often not high. For example, in the nickel-chromium-molybdenum forging dies used in our factory, the groove part is often still normal, but the dovetail part sometimes has a cracking phenomenon. In recent years, with the development of machinery industry, the demand for forging steel is increasing, one