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研制了1种性能优良的疏浚船用耙齿,其抗拉强度大于1600MPa,冲击韧度为35￣45J/cm2,硬度53HRC。显微组织由板条马氏体和夹持在马氏体板条之间的奥氏体薄膜组成。相同条件下的动载磨损试验表明耐磨性优于进口耙齿,实际应用也证明使用寿命达到了进口耙齿的水平。
Developed a kind of excellent performance dredging ship rake teeth, the tensile strength of more than 1600MPa, impact toughness of 35 ~ 45J / cm2, hardness 53HRC. Microstructure consists of lath martensite and an austenitic film sandwiched between martensite laths. Under the same conditions, the dynamic wear test shows that the wear resistance is better than the imported rake teeth, and the practical application also proves that the service life has reached the level of imported rake teeth.