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CT 35钢结硬质合金由于淬火硬度高(HRC 67～72),耐磨性能好,应用范围越来越广。GT 35合金的成分见附表。GT 35合金制件采用一般的一次淬火法或分级淬火法均有其不足之处。如果制件形状较复杂、多孔或截面尺寸稍大时,采用一次淬火直接淬油,往往会产生裂纹,使制件报废。采用分级淬火又须有硝盐槽,且需严防木炭等加热保护剂带入硝盐浴中,以免引起爆炸事故。
CT 35 steel hardened carbide due to high hardness (HRC 67 ~ 72), good wear resistance, the application of more and more widely. GT 35 alloy composition in the table. GT 35 alloy parts using a general quenching or grading quenching method has its shortcomings. If the workpiece shape is more complex, porous or cross-sectional size slightly larger, the use of a direct quenching oil quenching, tend to produce cracks, so scrapped parts. Adopting graded quenching, there must be a nitrate salt tank, and the heating protection agent such as charcoal should be strictly prevented from being brought into the salt bath to avoid causing an explosion accident.