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用常规的热处理工艺一定程度上提高压铸模型芯的表面硬度和耐磨性,对于工作环境十分恶劣的型芯,使用寿命依然很短。激光淬火具有热影响区和材料变形小、精度高、淬火硬度高、淬火后无需再加工等优点,给型芯表面硬化提供一种新的技术途径。但现代产品形状复杂,压铸件的工作面无需进行二次加工即可使用的情况越来越普遍,淬火后型芯的精度和质量要求很高,使激光淬火难度加大。对因复杂型芯激光淬火质量的影响因素进行分析,找出影响因素与淬火质量之间的内在关系,在实际淬火中加强各因素的控制,提高淬火质量。
With conventional heat treatment process to some extent improve the die casting mold core surface hardness and wear resistance, the working environment is very poor core, the service life is still very short. Laser quenching has the advantages of heat affected zone and small deformation of materials, high precision, high quenching hardness, no need to re-process after quenching, etc., providing a new technical approach to the core hardening. However, the complex shape of modern products, die-casting work surface without secondary processing can be used more and more common, the precision and quality requirements of the core after quenching so that the laser hardening more difficult. The factors influencing the laser quenching quality of complex cores are analyzed to find out the relationship between the influencing factors and the quenching quality. The actual quenching is to strengthen the control of various factors and improve the quenching quality.