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Manufacturing method for diamond tool

A technology of diamond tool and manufacturing method, which is applied in the field of diamond tool manufacturing, can solve the problems affecting the welding performance of the cutter head or the connection strength, the connection strength is high, the welding strength is high, and the cutter head is not firm, so that it is not easy to drop, and the connection strength High, the effect of increasing the contact area

Inactive Publication Date: 2009-09-23
富世华(河北)金刚石工具有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In the current method of manufacturing diamond tools, the cutter head needs to select at least two powders with a suitable ratio and a suitable pressurization method. Stir and mix thoroughly, if the mixing is uneven, it may affect the welding performance or connection strength of the cutter head
Moreover, when the cutter head of this structure is welded to the substrate, it also requires relatively harsh welding conditions. Generally, brazing or laser welding should be used for welding; even so, due to the metal powder used as the transition layer during the sintering process, The density and strength that the powder can achieve cannot be compared with the density and strength of commonly used steel, so even if the quality of the welding is very good, the connection strength is not as high as the welding strength between steel
In addition, we know that the manufacturing cost of metal powder is relatively high, and the price of metal powder is much higher than that of commonly used steel products.
Therefore, the cost of this diamond tool is high, and the welding performance of the material of the welding part with the tool substrate is poor, so that the bonding strength between the cutter head and the substrate is not as high as that after welding between ordinary steel materials, so the cutter head is not firm and it is easy to drop the cutter head , poor security

Method used

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  • Manufacturing method for diamond tool
  • Manufacturing method for diamond tool
  • Manufacturing method for diamond tool

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] This embodiment takes the manufacture of diamond saw blades as an example, and its basic manufacturing process includes the following steps:

[0027] 1. Manufacture of saw blade substrate

[0028] The production of the saw blade base is a general processing method. For example, stamping or cutting is used to blank the material, and then it is ground or milled. If necessary, drilling, hole cutting and other processing procedures are performed to form the base of the diamond saw blade.

[0029] 2. Fabrication of the transition layer

[0030] 2.1 First, select a low-carbon structural steel pipe with the same inner diameter as the outer circle of the saw blade base, select a suitable wall thickness, and select a suitable broach;

[0031] 2.2 Draw the groove on the broaching machine;

[0032] 2.3 Cut the above-mentioned steel pipe to form a strip-shaped transition layer of required size.

[0033] 3. Preparation of cutting layer powder

[0034] Weigh diamond and other met...

Embodiment 2

[0043] This embodiment takes the manufacture of diamond thin-walled drills as an example, and its basic manufacturing process includes:

[0044] 1. The manufacture of the diamond thin-walled drill matrix is ​​also the current general processing method, such as blanking, turning, grooving, welding and other processes, to form the drill pipe of the diamond thin-walled drill.

[0045] 2. The transition layer is manufactured by using a steel plate with a suitable thickness, which is directly punched and formed. The shape of the transition layer is a fan shape corresponding to the wall thickness of the thin-walled drill substrate, and the groove is stamped during the stamping process.

[0046] 3. The preparation of the cutting layer powder is the same as in Example 1.

[0047] 4. For the pressing of the cutter head parison, weigh the prefabricated cutting layer powder and put it into the mold of the press machine, and press it directly for molding.

[0048]5. Sintering, place the ...

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Abstract

The invention discloses a manufacturing method for a diamond tool, which comprises a manufacturing procedure of a tool basal body, a tool bit sintering procedure, a procedure of welding the tool bit and the basal body, and a manufacturing procedure of a transition layer connecting the tool bit and the basal body; the transition layer is processed by raw steel material, in particular to middle / low carbon steel material or middle / low carbon alloy steel material; the tool bit sintering procedure is as follows: the diamond acting as a cutting lay and blended powder made from metal powder is pressed into a parison firstly; the transition layer and the parison are combined, and then are put into a sintering furnace to be sintered to the tool bit, and finally the tool bit and the manufactured tool basal body are welded together. The manufacturing method can use the raw steel material for replacing powders such as Fe, Co, Ni and the like of the transition layer of the tool bit and the basal body, thus saving capital, simplifying the manufacturing procures, increasing the bonding strength and welding performance of the basal body and the tool bit, and leading the tool bit of the diamond tool to be difficult to drop out or generate deformation.

Description

technical field [0001] The invention relates to a method for manufacturing a diamond tool for processing hard and brittle non-metallic materials. Background technique [0002] At present, diamond tools have been widely used in the processing of hard and brittle non-metallic materials (such as stone, cement products, etc.). Diamond tools generally consist of a cutter head and a substrate. The process of manufacturing diamond tools is generally as follows: firstly, the tool substrate is manufactured by mechanical processing, the cutter head is manufactured by powder metallurgy, and then the cutter head and the substrate are welded together; Metal powder is directly sintered by powder metallurgy. The welding of the cutter head and the saw blade base generally uses welding methods such as brazing and laser welding. In order to facilitate welding, the head of a general saw blade is composed of a transition layer and a cutting layer that are easy to weld with the substrate. At ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B23P15/28
Inventor 王守兴李建民李春红李伟崔学彬
Owner 富世华(河北)金刚石工具有限公司