热处理是机械产品制造过程中一道十分重要的工序 ,它是保证机械零件内在质量的主要因素 ,是充分发挥材料潜力 ,保证零件质量和使用寿命、节能、节材、提高产品竞争能力的重要生产工艺。随着我国社会主义市场经济体制的进一步完善和我国即将加入世界贸易组织(ＷＴＯ) ,制造业面 Heat treatment is a very important process in the manufacturing process of mechanical products. It is a major factor in ensuring the intrinsic quality of mechanical parts. It is an important production process that fully utilizes the potential of materials, ensures the quality and service life of parts, saves energy, saves materials, and improves product competitiveness. . With the further improvement of China’s socialist market economic system and China’s imminent accession to the World Trade Organization (WTO), manufacturing