Non-quenching and tempering manufacturing process of saw blade matrix material
HU Shui-ping
WU Guo-gang
Abstract：In order to reduce the manufacturing cost of saw blade and improve the product quality, a new type saw blade matrix material was studied with the TMCP process though taking the special Si-Mn steel as the study object. The microstructure and mechanical properties of matrix material were analyzed and measured with such testing equipment as scanning electron microscope( SEM) and tensile testing machine. The results show that when the cooling rate after rolling is 32. 3℃/s, the microstructure mainly composed of fine lath bainite can be obtained, the tensile strength and yield strength of matrix material respectively reach 1315 and 1030 MPa, and the impact absorbed energy can reach 53. 9 J at this cooling rate. At the same time, the elastic modulus and elastic limit of test steel are 198. 5 GPa and 915. 4 MPa, respectively. In addition, after 80000 times of cyclic loading, the three-point bending permanent deformation height of test steel is 0. 21 mm, and the test steel shows better comprehensive mechanical properties. Furthermore, the Si-Mn series bainite steel produced by the non-quenching and tempering process can be used as the saw blade substrate matrix material.
Keywords：TMCP processsaw bladebainite transformationcooling rate after rollingspring steelelastic moduluselastic limitmechanical property
Publication Date：2018-01-01
Online Publishing Date：2025-08-15(First online date of this platform, not the publication date of the document)
Pages：6( 37-42 )