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图1是整形凹模的镶块,材料是10,要求淬火后的硬度RC54~58。我們是按以下步驟进行处理:1.在500~550℃的电爐内預热(按1~0.2分/公厘); 2.在780~800℃的盐浴爐内最后加熱,加热时間按0.30~0.35分/公厘计算; 3.在25~30℃、含有15%氯化鈉的水溶液中冷却,冷却至200℃左右轉入油中冷却,淬火后硬度为Rc60~62; 4.在260~280℃的温度下回火,回火后的硬度
Figure 1 is a plastic mold insert, the material is 10, the hardness after quenching RC54 ~ 58. We are in accordance with the following steps to deal with: 1. 500 ~ 550 ℃ in the electric furnace preheat (press 1 ~ 0.2 points / mm); 2. In the 780 ~ 800 ℃ salt bath furnace last heating, heating time According to 0.30 ~ 0.35 points / mm; 3. In 25 ~ 30 ℃, containing 15% sodium chloride in aqueous solution cooled, cooled to about 200 ℃ into the oil cooling, quenching hardness Rc60 ~ 62; Tempering at a temperature of 260 ~ 280 ℃, the hardness after tempering