Heat treatment process of 17cr16ni2

The steps to improve the heat treatment process of 17cr16ni2 material are as follows:

Step 1: quenching and tempering: after the 17cr16ni2 material is mixed and tempered, the surface induction quenching treatment is carried out;

Step 2. One time tempering: the 17cr16ni2 material treated in step (1) is subject to one-time ratio tempering and one-time surface induction tempering at the same time;

Step 3, secondary tempering: the 17cr16ni2 material treated in step (2) is subject to secondary ratio tempering and secondary surface induction tempering at the same time.

The temperature of quenching and tempering is controlled at: 980 ± 10 ℃; the temperature of the first tempering and tempering in step 2 is controlled at: 980 ± 10 ℃; the temperature of the second tempering and tempering in step 3 is controlled at: 650 ± 30 ℃.

Through the above optimization of the quenching and tempering process in the quenching and tempering heat treatment process, the secondary tempering is carried out after the original quenching and tempering to reduce the precipitation of carbides, so as to improve the impact toughness of bolts and meet the actual use requirements.

The temperature of the quenching and tempering in step 1 is controlled at: 970 ℃; the temperature of the primary tempering in step 2 is controlled at: 970 ℃; the temperature of the secondary tempering in step 3 is controlled at: 620 ℃. Through the optimization of the quenching and tempering process in the quenching and tempering heat treatment process, the secondary tempering is carried out after the original quenching and tempering to reduce the precipitation of carbides, so as to improve the impact toughness of bolts and meet the actual use requirements.

The temperature of quenching and tempering is controlled at: 980 ℃; the temperature of the primary tempering in step 2 is controlled at: 980 ℃; the temperature of the secondary tempering in step 3 is controlled at: 650 ℃. The temperature of quenching and tempering shall be controlled at: 990 ℃; the temperature of the primary tempering in step 2 shall be controlled at: 990 ℃; the temperature of the secondary tempering in step 3 shall be controlled at: 680 ℃.

The above content is a detailed description of the operation in combination with specific embodiments, and it cannot be determined that the specific implementation of the solid solution furnace is limited to these descriptions. For those skilled in the art of the operation, several simple deduction or replacement can be made without departing from the operation concept. 

Through the optimization of the quenching and tempering process in the quenching and tempering heat treatment process, the secondary tempering is carried out after the original quenching and tempering to reduce the precipitation of carbides, so as to improve the impact toughness of products and meet the actual use requirements.