动态载荷下三种典型模具钢材料的动态响应与稳定性分析

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中图分类号：TP365 文献标志码：A

Dynamic response and stabilityanalysis of three typical diesteel materialsunder dynamic load

ZHOU Chao

（Xi'an Aeronautical Polytechnic Institute，Xi'an 71Oo89，Shaanxi， China）

Abstract：In order to study the wear resistance and other performance change laws of molds under complex working conditions，three mold steels，LD1， 65Nb and Crl2MoV，were used as research objects to analyze their dynamic response and stability under dynamic loads，so as to provide a basis for the optimization selection of mold materials. Various methods were used，including impact wear test， retained austenite measurement， carbide content analysis， and dynamic mechanical response test. The results show that 65Nb steel exhibits the best load-bearing capacity and crack resistance under dynamic loads，with a tensile strength of 2300MPa and a fracture toughness of 52MPa⋅m1/2 ; while LDl steel has good plasticity under lighter loads，and its elongation after fracture can reach 9.88% . By analyzing the mechanical response behavior and wear characteristics of mold steel， it is found that the control of carbide content and retained austenite has a significant effect on the performance of mold steel，which provides theoretical support for the material selection and optimization of molds under different dynamic working conditions.

Key words：mold steel; dynamic load; mold material; dynamic response; wear characteristics

0 引言

模具作为制造业中重要的工具之一，被广泛用于金属成型、塑料注塑等多个领域[1]。（剩余8989字）