Method for assembling and welding ultrathin large-diameter saw blade

A welding method and a technology with large thickness, which can be used in welding equipment, tool manufacturing of sawing machines, arc welding equipment, etc., can solve problems such as easy cracking, and achieve the effects of eliminating welding stress, easy to master the operation process, and reasonable design.

Inactive Publication Date: 2009-01-21
HARBIN INST OF TECH
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Problems solved by technology

[0004] The purpose of the present invention is to provide a method of assembling and welding ultra-thin large-diameter saw blades capable of welding carbon tool steel, alloy tool steel and spring steel materials, with a diameter between Φ2800mm~Φ5200mm and a thickness of 11mm~18mm, so as to solve the current problem. There is a key problem that welding is easy to crack due to technology

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  • Method for assembling and welding ultrathin large-diameter saw blade
  • Method for assembling and welding ultrathin large-diameter saw blade
  • Method for assembling and welding ultrathin large-diameter saw blade

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[0023] see figure 1 ~ Fig. 6, the present invention will be further described by taking the assembling and welding of Φ3500mm large-diameter diamond matrix saw blade products as an example.

[0024] The material of saw blade 1 is 45Mn2V, normalized state before welding, diameter 3482mm, thickness before welding 13 ±0.2 mm. With laser cutting equipment, the steel plate is pressed figure 1 The design structure shown is cut into four fan-shaped raw materials of the same size, and the center hole 9, the process hole 5, the water tank 4, the sawtooth 3, and the welding groove 6 are processed at the same time. The welding groove 6 on one side is in the form of a U shape. , the mouth width b is 8mm, and the reserved gap a of the weld seam is 2mm, such as figure 2 shown. The design of the symmetrical weld seam of the cross stitching structure can effectively distribute the welding stress evenly. The design of double U-shaped welding groove 6 can realize small-section welds, whic...

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Abstract

The invention discloses an assembly welding method for an ultrathin saw blade with the large diameter, which comprises the processing steps of forming, preheating, welding, thermal insulation and slow cooling, etc. The invention relates to an assembly welding method of a saw, the selection of welding materials, an assembly welding structure of the saw, a way of preheating and slow cooling as well as the design content of parameters, welding process, and the technique. The diameter of carbon tool steel, alloy tool steel, and spring steel which are used in welding is between 2,800mm to 5,200mm, and the materials are used for producing the ultrathin saw blade with large diameter and the thickness of 11mm to 18mm. The invention has the following advantages of simple device, popular welding method and easy mastering for the operation process; the design of the assembly welding structure and the welding process of the saw is reasonable, the welding can be carried out without the need of spot welding and fixing for a welding seam, the welding stress is distributed uniformly, after welding, the whole saw blade is neat without deformation and the welding seam has no welding cracking; the reasonable selection of the welding materials meets the performance requirements that the welding seam can bear, and keeps the same color of the welding seam and substrate.

Description

technical field [0001] The invention relates to a method for assembling and welding ultra-thin and large-diameter saw blades, which belongs to the saw blade production industry. Background technique [0002] Circular saw blades are mainly used for sawing steel, stone and wood, and large diameter saw blades are mainly used for sawing larger volumes of steel and stone. This kind of saw blade is relatively thin, the thickness is generally below 18mm, and the diameter is between Φ2800mm~Φ5200mm. The product requires high strength, rigidity and hardness, so tool steel (carbon tool steel, alloy tool steel, high-speed tool steel) is generally used. Steel) and spring steel and other materials, in order to improve the service life, it is usually necessary to weld the carbide head on the tooth. [0003] The raw materials used for the saw blades are all made of commercially available plates. There is no such large-scale plates in the market at present, so the saw blades need to be ass...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B23D65/00B23K9/02B23K9/235
Inventor 郭面焕安凤占
Owner HARBIN INST OF TECH
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