Three-dimensional cooperative distribution method for various grinding materials for preparing superhard tool

A technology of superhard tools and abrasives, applied in the direction of manufacturing tools, grinding devices, metal processing equipment, etc., can solve the problem that abrasive tools are difficult to exert long-term and stable characteristics, sintering tools or brazing and electroplating tools are difficult to carry out, The load of the saw blade is too large to continue to use, etc., to achieve the effect of good suitability, good processing adaptability, and easy operation

Inactive Publication Date: 2014-09-24
NANJING UNIV OF AERONAUTICS & ASTRONAUTICS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, as the cutting progresses, part of the concrete powder and cutting chips adhere to the saw blade, resulting in a decrease in the exposure of the abrasive grains, a decrease in cutting efficiency, further damage to the diamond abrasive grains, and an increase in the temperature of the saw blade. , forming a vicious circle, causing the saw blade to be overloaded and unable to continue to use
The example shows that it is difficult for a single type

Method used

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  • Three-dimensional cooperative distribution method for various grinding materials for preparing superhard tool
  • Three-dimensional cooperative distribution method for various grinding materials for preparing superhard tool
  • Three-dimensional cooperative distribution method for various grinding materials for preparing superhard tool

Examples

Experimental program
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preparation example Construction

[0042] (4) The preparation in step (3) is brazed and heated, and the preparation can be a three-dimensional structure formed by the cooperative arrangement of multiple abrasives on the surface of a superhard tool; it can also be a variety of abrasives and The three-dimensional space structure formed after the brazing alloy powder is mixed.

[0043] The main abrasives responsible for the main processing in step (1) include natural diamond, artificial diamond, CBN (cubic boron nitride), polycrystalline diamond, polycrystalline CBN and other superabrasive types applied to material processing, which are characterized by processing The abrasive grains have high strength and slow wear. The abrasive grains are mainly used to form cutting action to remove materials. The grain size ranges from 1 mesh to 300 mesh.

[0044] Auxiliary abrasives are mainly: silicon carbide (green silicon carbide, black silicon carbide, etc.), alumina (brown corundum, white corundum, single crystal corundum...

example 1

[0060] (1) Prepare a saw blade head for long-term cutting of the edge of high-speed rail track slabs. Saw blade dimensions: (Maximum outer diameter)× (installation aperture) × 4mm (thickness), saw blade head size: (Inner diameter of cutter head)×40mm (length of cutter head)×12mm (height of cutter head)×4mm (thickness of cutter head) requires that the prepared cutter head can perform stable, efficient and long-life cutting process on concrete and rebar.

[0061] The three-dimensional collaborative arrangement method of various abrasives is as follows:

[0062] 1. Since the material to be cut is reinforced concrete and the material is a composite type, two main abrasives are required, diamond and cubic boron nitride are used to cut concrete and steel respectively, and because the chip removal space is small during cutting, it prevents cutting In case of stuck phenomenon, green silicon carbide abrasive is used as auxiliary abrasive, and green silicon carbide abrasive can re...

example 2

[0070] A grinding wheel for grinding and polishing hard and brittle stone is prepared. Grinding disc type: (Outer diameter) × 40mm (total height), 9 flat grinding blocks are welded on the plane, and the prepared grinding blocks are required to be able to perform stable, efficient, and long-life grinding and polishing on granite, marble, and ceramics.

[0071] The three-dimensional collaborative arrangement method of various abrasives is as follows:

[0072] 1. Determine the abrasive particle parameters according to the processing requirements. The requirements are mostly used for processing hard and brittle materials, and the scope of application is wide. It is suitable for processing them with major abrasives such as diamond and polycrystalline diamond. Due to the need for a certain polishing effect, stability and accuracy It must be considered that the auxiliary addition of alumina abrasives can have a better chip removal effect, and the formed cavity has a certain lubrica...

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Abstract

The invention discloses a three-dimensional cooperative distribution method for various grinding materials for preparing a superhard tool, and belongs to the field of superhard grinding material tool manufacturing. The distribution method comprises the following steps that grinding material parameters are determined according to processing requirements, wherein the grinding materials comprise major grinding materials in charge of major processing effects and auxiliary grinding materials achieving auxiliary effects, and the granularity of the major grinding materials is generally greater than that of the auxiliary grinding materials; various kinds of grinding materials determined in the former step are uniformly mixed according to the required proportion or are sequentially distributed in the sequence according to the granularity; according to the method for preparing the tool, material mixing agents are added, various kinds of mixed grinding materials are proportionally and uniformly mixed with brazing materials and pore creating materials, and the mixture is poured into a mold and is pressed into a blank; bonding agents can also be brushed and coated on the surface of a substrate, then, various grinding materials which are uniformly mixed are cooperatively distributed on the surface of the substrate in the sequence according to the granularity size, and then, the brazing materials are added. The method provided by the invention has the advantages that the processing adaptability of the grinding materials is good, the efficiency is high, the continuous processing capability is high, the performance is excellent, and the processing stability is high.

Description

Technical field: [0001] The invention relates to a method for three-dimensional cooperative arrangement of various abrasive materials for preparing superhard tools, which belongs to the field of superhard abrasive tool manufacturing. Background technique: [0002] Traditional bonded abrasive tools can be divided into resin bond, vitrified bond, metal bond (including electroplating and sintering) diamond tools and other types according to different bonds. The extensive application of these superhard tools in production has greatly improved The overall level and ability of the processing industry have been changed, and the original appearance of the processing industry has also been changed, but at the same time, some of their disadvantages have been gradually exposed, whether it is single-layer electroplating or multi-layer sintering (thermal curing) superhard tools, Abrasives are only mechanically embedded in the coating or carcass metal, and the interface lacks bonding forc...

Claims

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Application Information

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IPC IPC(8): B24D18/00B23P5/00
Inventor 肖冰王波段端志张子煜
Owner NANJING UNIV OF AERONAUTICS & ASTRONAUTICS
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