Introduction
GB/T1299-1985 alloy tool steel is a steel widely used in the manufacture of Punching dies, blades, cutting tools, molds and other tool wear parts and components that require hard brittle surfaces and sharply defined edges. It has good weldability, machinability and formability, low damping coefficient, good fatigue strength and shock resistance, and good heat treatment stability.
Alloy Tool Steel is a kind of alloy steel which contains certain amounts of alloy elements and carbon. Its performance and composition are different from that of carbon steel and low alloy steel. Compared with carbon steel, it has higher hardness and better wear resistance after heat treatment. According to the different elements alloyed, the properties of alloy steel can be improved, such as resistance to atmospheric corrosion, etc., as well as certain physical and mechanical properties. Alloy tool steel is widely used in practical applications.
GB/T1299-1985 alloy tool steel is a high-manganese steel with a carbon content of 0.3-0.6% and a manganese content of 1.0-1.6%. The main alloy elements are silicon and manganese. Alloy tool steel has good strength and wear resistance, corrosion resistance and heat resistance.
Heat treatment
Due to the high manganese content, this tool steel is particularly suitable for heat treatment. The heat treatment process of GB/T1299-1985 alloy tool steel is divided into two processes, annealing and quenching.
The annealing process of GB/T1299-1985 alloy tool steel is a process of heating the steel to 850-875℃, holding it at that temperature and then slowly cooling it. This process can improve the stability of the steel, reduce hardness and make the steel easy to process.
The quenching process is a process in which the heated steel is directly quenched in oil, water or other media, resulting in an increase in hardness and strength of the steel. Disadvantages include cracking, oil adhesion and slow cooling.
Applications
GB/T1299-1985 alloy tool steel is an excellent material for making tooling materials such as cutting tools, molds, blades, punches and dies. Its excellent properties such as strength and wear resistance make it particularly suitable for making blade materials used for cutting, punching, blanking and trimming. In addition, it is also widely used to make cold forming dies.
Besides, GB/T1299-1985 alloy tool steel is also suitable for making some screw driver heads, pliers and other tools because it has good formability and machinability and has good resistance to deformation and cracking
Conclusion
GB/T1299-1985 alloy tool steel is an excellent steel for making tooling material and components such as cutting tools, blades, molds, punches and dies. It has good weldability, machinability, formability, low damping coefficient, good fatigue strength and shock resistance, good heat treatment stability, and good resistance to deformation and cracking. It is widely used in practical applications.
