Manufacturing method of independent welded grinding-tooth-shaped bimetal band saw blade

Abstract

The invention relates to a manufacturing method of an independent welded grinding-tooth-shaped bimetal band saw blade, which sequentially comprises the following five steps of carrying out forming processing and heat treatment on a tooth part material; carrying out forming processing and heat treatment on a steel band back material; welding the tooth part material and the steel band back material which are subjected to heat treatment into one whole body; carrying out heat treatment on a welding region; carrying out forming processing on the welded tooth part material, the welding region and the welded steel band back material, removing welding slag generated in the welding process and processing a cutting edge on the tooth part material. The tooth part material and the steel band back material are respectively and separately subjected to heat treatment before welding without adopting a process of carrying out online quenching and annealing on a current composite material, so that performance of the tooth and back materials can be sufficiently utilized; the tooth part material and the steel band back material are respectively subjected to forming processing, so that the condition that the tooth part material and the steel band back material are cut after being welded to cause cutting on most of the tooth part material is avoided and loss of raw materials is reduced.

Description

technical field [0001] The invention relates to a method for manufacturing a bimetal band saw blade. Background technique [0002] The traditional bimetallic band saw blade manufacturing method is to use electron beam or laser energy input to weld and compound the high-speed steel wire at the tooth part and the steel strip on the back, and then perform annealing heat treatment on the composite steel strip through well type and bell type annealing method. And through the rolling process, a bimetal composite steel strip suitable for bimetal band saw blades is produced. Then, the composite steel belt is formed by milling process, and the tooth shape suitable for different cutting needs is milled out. After processing, the bimetal band saw blade product is obtained after one quenching and multiple tempering heat treatments. [0003] There are following defects in the manufacturing method of existing bimetallic band saw blade: [0004] 1. After compounding, the bimetal band s...

AI Technical Summary

Problems solved by technology

[0004] 1. After compounding, the bimetal band serrations and the back material are treated by the same heat treatment process, which cannot maximize the performance of the tooth material and the back material of the steel strip;

[0005] 2. The bimetal composite steel belt is processed by milling forming process, most of the tooth material is removed, the waste of raw materials is large, and the yield of finished products is low;

[0006] 3. After electron beam and laser welding, the weld seam of bimetal composite steel strip has high hardness, and the weld seam needs to be annealed to reduce the weld seam hardness before flattening and milling; the process is long, consumes a lot of energy, and the process is difficult;

[0008] 5. Burrs are likely to be produced on the cutting edge of the tooth during milling, which affects the cutting performance of the product