1results about How to "Avoid non-conformities" patented technology

The application discloses a kind of medium wideband centrifugal composite steel supporting roller's quenching and tempering heat treatment method, belongs to supporting roller heat treatment technical field, solve the technical problem that after using existing supporting roller quenching and tempering heat treatment method, roll neck cracking or roll body hardness is unqualified.It is included in the quenching and tempering heat treatment method of the application: step 1, supporting roller is heated and kept warm as a whole;Step 2, after keeping warm, supporting roller is taken out of furnace, and is hoisted and transported to spray quenching bed;Step 3, carry out regional quenching treatment on spray quenching bed, reciprocating rotating supporting roller during regional quenching treatment process;Step 4, supporting roller after quenching is loaded into furnace and is tempered;Step 5, after tempering, the hardness of supporting roller is detected.The application is different for roll body roll neck material, and cooling is carried out by different cooling methods, and the production of high-quality centrifugal composite steel supporting roller product is realized.