Development of Medium Carbon 27SiMn Spring Steel Plate
In this paper,the production technology process and relative process parameters of new product,27SiMn spring steel plate are introduced. The microstructure needed by product is obtained through reasonably setting cooling parameters after rolling,with which the mechanical properties of product are ensured. The using status of users shows that the performances of 27SiMn spring steel plate are good by making full use of existing equipment of Baotou Steel,adopting reasonable process parameters under the condition that both of raw materials and liquid iron meet the requirements. Its ten-sile strength is not less than 800 MPa and elongation is not less than 19％. Moreover,the effects of atmosphere in heating furnace on decarburized layer on the surface of medium carbon steel with silicon are important,decarburized layer on the surface of 27SiMn spring steel plate is just 24％ of the requirements in the national standard GB/T 1222-2016 by reducing atmosphere and micro-positive pressure operations in heating furnace.
万方数据
维普
