Metal circular saw blade and preparation method thereof

Abstract

A metal circular saw blade, including a saw blade body, a mounting hole is designed in the middle of the saw blade body, saw teeth are designed around the periphery of the saw blade body, and coatings are designed on both sides of the saw teeth. In this structure, the upper surface of the saw teeth , the lower surface and the tooth top surface are designed with coating; a preparation method of metal circular saw blade, the steps are as follows: the saw blade body is vertically installed on the sawtooth spin coating processing rotary table, and the coating liquid tank is raised to The lowest sawtooth is immersed in the coating paint at 50mm, and the sawtooth surface coating is dried with a hot air blower. The number of spin coatings and the replacement of the coating liquid tank are determined according to the actual coating thickness and performance. , and then process the next sawtooth until it is completed. Use a cylindrical metal electrode to contact the two sides of the saw blade to energize and pressurize. The saw blade rotates evenly for one revolution until the two sides of the saw blade are sintered to form a coated metal circular saw blade.

Description

technical field [0001] The invention relates to a cutting tool, in particular to a metal circular saw blade and a preparation method thereof. Background technique [0002] Metal cold and hot cutting saw blades are a kind of metal circular saw blades, which are commonly used cutting tools in iron and steel enterprises. Due to the effect of cutting heat and workpiece heat conduction, the temperature of the sawtooth exceeds the thermohardness to cause wear and the bonding wear between the cut material and the surface of the sawtooth is the main reason for the failure of the saw blade. At present, the low-temperature tempering after quenching of the tooth tips used in the processing of metal cold and hot-cutting circular saw blades cannot solve the above problems. The specific operation is to use electrodes to heat the saw teeth to above 750 degrees Celsius, then air-cool, and then use 250 to 350 degrees Celsius for 4 hours. Low-temperature tempering The hardness of the rear sa...

AI Technical Summary

Problems solved by technology

[0003] At present, the metal cold and hot cutting circular saw blades produced at home and abroad adopt the process of overall quenching and partial quenching of the tooth tip after overall quenching and tempering, which cannot solve the problem of low service life due to the limitations of the material of the saw blade. The disadvantage of metal circular saw blades is that the cost is too high and the process is complex and difficult to process. Taking the metal circular saw blade with partially welded alloy as an example, the price is more than 4 times that of metal cold and hot cutting circular saw blades and cannot be used for hot cutting. The working line speed is only 1 / 40th of a saw blade for hot and cold metal cutting

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