A saw blade is a steel strip with a toothed blade, mainly used for sawing things. During the working process, the saw blade must withstand huge friction. Therefore, many manufacturers use high-frequency induction heating power to heat treat it. The effect is very good and meets the working needs of the saw blade. Today, we will take a look at the high-frequency heat treatment process of machine saw blades.
Machine saw blades have widths ranging from 16mm to 50mm, and thicknesses of 1-2mm. When sawing thick section profiles, the blade thickness is 1.5-2.0mm, and the number of saw teeth also varies.
Machine saw blades are generally made of ordinary high-speed steel or low-alloy high-speed steel. If they are made of M2, 9341, M7 and other steels, the quenching grain size is controlled at 10-10.5. If they are made of low-alloy high-speed steel, the quenching grain size is controlled. At level 9.5-10.
1. Preheat. A high-frequency induction heating power supply is used for preheating heat treatment, and the preheating temperature is 550°C.
2. Heating. The induction heating temperature of the machine saw blade is 1160℃, and the heating time is 45s.
3. Tempering. The tempering heat treatment of machine saw blades can also be completed using high-frequency induction heating power. The specific temperature is 560°C. The hardness after tempering meets its working requirements.
The heat treatment of machine saw blades cannot be overheated, the hardness must not be less than 64HRC, and the tempering must be sufficient. This article briefly analyzes the high-frequency heat treatment process of saw blades. However, this is just a theory, and the specifics must be practiced by everyone.
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