Local strengthening device and method for multi-metal melting band-shaped saw blade

Abstract

The invention discloses a multi-metal melting band-shaped saw blade local strengthening device and method. The device comprises a clamping mechanism, a saw blade feeding mechanism, a nanometer electrophoresis strengthening mechanism and a dissimilar metal melting mechanism. The clamping mechanism comprises a supporting plate, an electromagnetic pressing module and a pressing driving mechanism. The nanometer electrophoresis strengthening mechanism comprises a nanometer material mixing module and an electrophoresis mechanism, the electrophoresis mechanism comprises an electrophoresis processing tank, an electrophoresis auxiliary electrode, an electrophoresis auxiliary power supply and an electrophoresis driving mechanism, the electrophoresis auxiliary electrode is arranged in the electrophoresis processing tank, and the electrophoresis processing tank is connected with the nanometer material mixing module through a conveying pipe; the dissimilar metal melting mechanism comprises a melting machining cavity, a heating module, a vacuumizing module and an auxiliary gas module. Various nano materials are deposited on the tooth tips of the saw blade through an electrophoresis auxiliary electric field, then high-performance tooth tip materials are inlaid on the tooth tips of the saw blade through high-temperature local heating, the welding quality can be improved, and welding materials are saved.

Description

technical field [0001] The invention relates to a saw blade manufacturing method and device, in particular to a multi-metal fusion band saw blade local strengthening device and method. Background technique [0002] Bimetal band saw blade mainly refers to the band saw blade whose tooth tip material is high-speed steel or other high-performance steel, and the back material is spring steel and other common materials. The tooth tip material has high hardness, good wear resistance, and strong red hardness. And other characteristics, the back material has the characteristics of good toughness and excellent fatigue resistance. [0003] The use of bimetal welding to manufacture saw blades can save the use of rare metals and reduce production costs, but it can also meet the requirements for parts processing. As a blanking tool, metal band saw blade has many advantages compared with other tools, such as high efficiency, large cutting size, narrow kerf, and high section accuracy, and ...

AI Technical Summary

Problems solved by technology

[0004] In the prior art, the welding processes mainly include electron beam welding, resistance butt welding and laser welding. Among them, electron beam welding needs to be carried out in a vacuum environment, and vacuum pumping is required after each start-up, which has a great impact on production efficiency, and the equipment The price is expensive, and the cost of repair and maintenance is high; although resistance butt welding equipment is cheap, the heat-affected zone after welding is relatively large, and the welding quality is difficult to control, and the product qualification rate is difficult to control; compared with electron beam welding, laser welding does not require Vacuum environment, and the equipment cost and maintenance cost are lower. Compared with resistance butt welding, the welding process is easier to control and the weld quality is better.

[0005] At present, the main form of laser welding bimetallic band saw blades is welding of spring steel strips and high-speed steel strips, because cemented carbide is formed by powder sintering and cannot be made into strips for continuous laser welding

In addition, in the butt welding positioning of the back material and the tip block material, due to the processing error of the back material tooth pitch and other issues, welding misalignment will occur. If the two materials are inaccurately positioned, the quality of the weld will The reduction of the bimetallic saw blade will cause problems such as saw teeth falling off, which will affect the service life of the saw blade

Moreover, because the shape of the tooth tip material cannot completely match the shape of the tooth tip of the saw blade, it is difficult to effectively ensure the strength of the welding position during processing, and it is easy to cause shedding.

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