模具热处理技术的现状与展望资料.docVIP

模具热处理技术的现状与展望 摘要：模具热处理是保证模具性能的重要工艺过程。它对模具的如下性能有着直接的影响。模具制造精度：组织转变不均匀、不彻底及热处理形成的残余应力过大造成模具在热处理后的加工、装配和模具使用过程中的变形，从而降低模具的精度，甚至报废。 模具的强度：热处理工艺制定不当、热处理操作不规范或热处理设备状态不完好，造成被处理模具强度（硬度）达不到设计要求。模具的工作寿命：热处理造成的组织结构不合理、晶粒度超标等，导致主要性能如模具的韧性、冷热疲劳性能、抗磨损性能等下降，影响模具的工作寿命。模具的制造成本：作为模具制造过程的中间环节或最终工序，热处理造成的开裂、变形超差及性能超差，大多数情况下会使模具报废，即使通过修补仍可继续使用，也会增加工时，延长交货期，提高模具的制造成本。正是热处理技术与模具质量有十分密切的关联性，使得这二种技术在现代化的进程中，相互促进，共同提高。 20世纪80年代以来，国际模具热处理技术发展较快的领域是真空热处理技术、模具的表面强化技术和模具材料的预硬化技术。模具热处理真空淬火强化Status and Prospect of the mold heat treatment technology Abstract: mold heat treatment is an important process to ensure that the mold performance. It follows the mold performance has a direct Connected. Precision mold manufacturing: organizational changes uneven, incomplete, and the formation of heat treatment residual stress caused by the deformation of the mold after the heat treatment processing, assembly and mold during use, thereby reducing the accuracy of the mold, or even scrapped. The strength of the mold: heat treatment process developed improper heat treatment operations are not standardized or heat treatment equipment status is not intact, causing the handle mold strength (hardness) of the design requirements. The working life of the mold: the heat caused by the irrational structure, grain size, such as excessive, resulting in major performance, such as mold toughness, thermal fatigue performance, anti-wear performance decline, affect the working life of the mold. Mold manufacturing costs: as an intermediate or final process of mold manufacturing process, heat treatment cracking, distortion-tolerance and performance ultra-poor, in most cases will die scrap, even if the repair can continue to use, will increase the working hours to extend the delivery time, improve mold manufacturing costs. Is the heat treatment technology and the quality of the mold has a very close correlation, making the two kinds of technology in the process of modernization, mutual promotion and common. Since the 1980s, the f