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A kind of manufacturing process of bimetallic band saw blade

A technology of bimetal band and manufacturing process, which is applied in the direction of sawing machine tool manufacturing, manufacturing tools, metal sawing equipment, etc., can solve the problems of low fatigue strength of band saw blades, raw material quality problems, saw back cracks, etc., and achieve residual pressure Reasonable stress distribution, improved fatigue performance, and improved tool life

Inactive Publication Date: 2016-06-22
温岭市工量刃具行业协会 +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The performance of domestic band saw blades is difficult to reach the advanced level
The main problems are as follows: 1. The quality of raw materials; 2. The heat treatment of bimetallic band saw blades
Due to the unreasonable heat treatment of the traditional bimetal band saw blade, the fatigue resistance of the bimetal band saw blade makes the thin saw blade prone to fatigue cracks at the root during use; in addition, after heat treatment, the residual compressive stress generated is inevitable, and It is often harmful. In the traditional technology, sandblasting the band saw blade after heat treatment will easily cause the saw teeth of the band saw blade to be affected by the passivation of sand particles. At the same time, it will also make the distribution of residual compressive stress on the back of the band saw blade and the root of the saw tooth unreasonable. The fatigue strength of the band saw blade is low; in addition, because the band saw blade itself is thin, the wood is hard or the feeding speed is fast, the power consumption during sawing is large. When the saw blade is sawing wood, due to the friction between the saw teeth and the wood When heated, it expands and elongates, so that the back of the saw is tensed. In this way, it is easy to cause excessive force on the back of the saw and cause cracks on the back of the saw.

Method used

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  • A kind of manufacturing process of bimetallic band saw blade
  • A kind of manufacturing process of bimetallic band saw blade
  • A kind of manufacturing process of bimetallic band saw blade

Examples

Experimental program
Comparison scheme
Effect test

Embodiment １

[0037] The manufacturing process of the bimetallic band saw blade of the present embodiment is as follows:

[0038] A, material selection: the material selection of the sawtooth material is M42 high-speed steel, and the material selection of the sawback material is Rm80 steel; the sawback material and the sawtooth material are preferably pre-spheroidized annealing treatment;

[0039] B. Welding: according to the size of the bimetallic saw blade, the sawtooth material and the saw back material are welded together to obtain a first-class semi-finished product; the welding is preferably laser welding;

[0040]C. Preliminary processing: Straighten the first-grade semi-finished product, and according to the designed tooth shape, mill out the saw teeth on the edge of the first-grade semi-finished sawtooth material to obtain the second-grade semi-finished product;

[0041] D. Heat treatment: quench the obtained secondary semi-finished product at a temperature of 1170°C to 1200°C for ...

Embodiment ２

[0045] The manufacturing process of the bimetallic band saw blade of the present embodiment is as follows:

[0046] A, material selection: the material selection of the sawtooth material is M42 high speed steel, the material selection of the saw back material is Rm80 steel, and the M42 high speed steel includes the weight percentage of the following components: C: 1.10%, W: 1.65%, Mo: 9.5%, Cr : 4.05%, V: 1.20%, S: 0.0015%, P: 0.010%, Co: 8.20%, Si: 0.36%, Mn: 0.60%, and the rest is iron; the weight percentage of the Rm80 steel includes the following components: C : 0.35%, Cr: 3.05%, Mo: 1.98%, Ni: 0.54%, V: 0.36%; S: 0.0015%, P: 0.010%, Mn: 0.68%; Si: 0.46%, the rest is iron; and in advance The annealing treatment is performed on the sawtooth material and the sawback material. As a preference, the annealing treatment on the sawback material and the sawtooth material is specifically spheroidizing annealing treatment.

[0047] B. Welding: Laser welding is used to weld the sawt...

Embodiment ３

[0054] The manufacturing process of the bimetallic band saw blade of the present embodiment is as follows:

[0055] A, material selection: the material selection of the sawtooth material is M42 high speed steel, the material selection of the saw back material is Rm80 steel, and the M42 high speed steel includes the weight percentage of the following components: C: 1.20%, W: 1.0%, Mo: 10.0%, Cr : 4.0%, V: 1.25%, S: 0.002%, P: 0.005%, Co: 9.0%, Si: 0.40%, Mn: 0.1%, and the rest is iron; the weight percentage of the Rm80 steel includes the following components: C : 0.40%, Cr: 2.0%, Mo: 1.0%, Ni: 0.7%, V: 0.5%; S: 0.002%, P: 0.005%, Mn: 0.3%; Si: 0.6%, the rest is iron; and in advance The annealing treatment is performed on the sawtooth material and the sawback material. As a preference, the annealing treatment on the sawback material and the sawtooth material is specifically spheroidizing annealing treatment.

[0056] B. Welding: Laser welding is used to weld the sawtooth materi...

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Abstract

The invention provides a process for manufacturing a bimetal strip band saw blade, and belongs to the technical field of band saw blade manufacturing. The process solves the problems that band saw blades manufactured through an existing band saw blade manufacturing process are low in fatigue strength and short in service life. The process for manufacturing the bimetal strip band saw blade includes the first step of selecting materials, wherein the M42 high-speed steel serves as the materials of saw teeth, and Rm80 steel serves as the materials of a saw back; the second step of welding, wherein the materials of the saw teeth and the materials of the saw back are welded together according to the size of the bimetal strip band saw blade so that a first-level semi-finished product can be obtained; the third step of primary machining, wherein the first-level semi-finished product is straightened, the edge of the materials of the saw teeth of the first-level semi-finished product is milled to form the saw teeth according to the designed tooth shape so that a second-level semi-finished product can be obtained; the fourth step of conducting heat treatment, wherein heat treatment is conducted on the obtained second-level semi-finished product so that a third-level semi-finished product can be obtained; the fifth step of conducing surface finishing, wherein rolling is conducted on the third-level semi-finished product. The machined band saw blade has the advantages of being high in fatigue strength and long in service life.

Description

technical field [0001] The invention belongs to the technical field of band saw blade manufacture, and relates to a manufacturing process of a bimetallic band saw blade. Background technique [0002] Bimetal band saw blade is a high-tech product for metal cutting and blanking, widely used in machinery, chemical industry, metallurgy, shipbuilding, aerospace, food, electronics, national defense, construction and other industries. Compared with traditional bow-shaped reciprocating saws and circular saws, its cutting accuracy and work efficiency are doubled, and material loss is greatly reduced. It has four advantages of high precision, high efficiency, energy saving and consumption reduction. The advent of bimetallic band saw blades is known as "a revolution in metal blanking technology". Bimetal band saw blades have formed a huge independent industry that plays a decisive role in the world manufacturing industry. [0003] According to relevant statistics, by 2011, the market...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B23D65/00
Inventor 赵先锐张梦贤方一航霍颜秋徐爱娇张建宇
Owner 温岭市工量刃具行业协会
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