Preparation method of novel multilayer brazing super-hard abrasive tool

A superhard abrasive and brazing solder technology, which is applied in the direction of manufacturing tools, metal processing equipment, grinding/polishing equipment, etc., can solve the structural design optimization of multi-layer brazing abrasives, the grinding effect is not obvious, and the multi-layer grinding Difficulty in chipping and other problems, to achieve the effect of ensuring continuous working ability, small artificial influence factors, and controllable chip removal space

Inactive Publication Date: 2018-06-15
NANJING UNIV OF AERONAUTICS & ASTRONAUTICS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The abrasive particle size is small, and it is mostly used in grinding, and through the analysis of relevant data, it is believed that although this kind of tool has a certain chemical reaction on the surface of the abrasive, the combination of the abrasive and the matrix has a certain brazing effect, but the exposure of the abrasive , The holding strength of abrasive grains, multi-layer grinding performance and other aspects still have great difficulties. The abrasive grain size is large and easy to fall off, the abrasive exposure is low, the chip removal effect is poor, and the multi-layer grinding effect is not obvious or even unsustainable.
Therefore, it is considered that this method does not fundamentally design and optimize the structure of multi-layer brazing abrasives, and it is difficult to exceed the set pattern of traditional sintered diamond tools.

Method used

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  • Preparation method of novel multilayer brazing super-hard abrasive tool
  • Preparation method of novel multilayer brazing super-hard abrasive tool

Examples

Experimental program
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Effect test

Embodiment 1

[0045] Now a multi-layer brazing grinding disc is needed to grind the surface of metal materials. The size of the grinding disc is 125mm, and it is formed by preparing 10 multi-layer brazing blanks with length×width×height=40mm×10mm×4mm and then brazing through a vacuum brazing furnace. Preparation steps:

[0046] The first step is to determine that the dilution material is SiO 2 Particles, the particle size is 120 mesh, the brazing solder is copper-based solder, its composition is copper-tin-titanium, the content percentage is: copper 60%-65%, tin 20%-27%, titanium 16%-26%. The particle size is 120 mesh. The super-hard abrasive is artificial diamond, the grade is high-grade wear-resistant type, and the particle size is 40 / 50 mesh. The diluted material and brazing solder are compounded into a composite material at a volume ratio of 1:2.

[0047] The second step is to granulate and wrap the superhard abrasive grains. The composition of the wrapping is the composite material...

Embodiment 2

[0052] Now a multi-layer brazing grinding disc is needed to grind the surface of metal materials. The size of the grinding disc is 125mm, and it is formed by preparing 10 multi-layer brazing blanks with length×width×height=40mm×10mm×4mm and then brazing through a vacuum brazing furnace. Preparation steps:

[0053] The first step is to determine that the dilution material is SiO 2 Particles, the particle size is 120 mesh, the brazing solder is copper-based solder, its composition is copper-tin-titanium, the content percentage is: copper 60%-65%, tin 20%-27%, titanium 16%-26%. The particle size is 120 mesh. Silicon carbide is selected as the superabrasive, and the diluted material and brazing solder are mixed at a volume ratio of 2:1 to form a composite material.

[0054] The second step is to granulate and wrap the superhard abrasive grains. The composition of the wrapping is the composite material prepared in step 1. The abrasive wrapping is bonded and fixed with a water-so...

Embodiment 3

[0059] Now a multi-layer brazing grinding disc is needed to grind the surface of metal materials. The size of the grinding disc is 125mm, and it is formed by preparing 10 multi-layer brazing blanks with length×width×height=40mm×10mm×4mm and then brazing through a vacuum brazing furnace. Preparation steps:

[0060] The first step is to determine that the dilution material is SiO 2 Particles, the particle size is 120 mesh, the brazing solder is copper-based solder, its composition is copper-tin-titanium, the content percentage is: copper 60%-65%, tin 20%-27%, titanium 16%-26%. The particle size is 120 mesh. Artificial diamond and polycrystalline diamond are selected as superabrasives, and the diluted material and brazing solder are mixed at a volume ratio of 1:5 to form a composite material.

[0061] The second step is to granulate and wrap the superhard abrasive grains. The composition of the wrapping is the composite material prepared in step 1. The abrasive wrapping is bon...

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Abstract

The invention discloses a preparation method of a novel multilayer brazing super-hard abrasive tool, and belongs to the field of super-hard abrasive tool manufacturing. The preparation method comprises the step 1) of proportionally mixing diluted materials with brazing solders to form composite agents; the step 2) of pelletizing and packing super-hard abrasives, and bonding and fixing the super-hard abrasives with water-soluble binders; the step 3) of uniformly mixing the packed super-hard abrasive compounds with filling materials, the brazing solders and the water-soluble binders; the step 4)of putting the mixtures in a mould for pressure forming; and the step 5) of heating and brazing formed blanks; according to the method, the brazing strength of single abrasives is controlled indirectly by control of the size of a brazing area of the brazing super-hard abrasives, and the multilayer sustainable processing performance of multilayer brazing is achieved through the structure collocation of the filling materials; the life of the brazing super-hard abrasive tool is prolonged; the preparation technology is simple, and the quality is stable and easy to control; and the working procedures can be standardized, and applicable for industrial mass production.

Description

technical field [0001] The invention belongs to the field of superhard abrasive tool manufacturing, and specifically refers to a preparation method of a novel multilayer brazing superhard abrasive tool. Background technique [0002] Traditional superabrasive tools represented by diamond tools can be divided into two categories: electroplated tools and sintered tools, each of which has its own strengths. However, due to the high surface energy of the diamond surface, it is difficult to infiltrate with common metals, and there is no firm metallurgical bonding layer at the interface between the abrasive grains and the matrix metal. The carcass has a small holding force on the abrasive grains, and the abrasive grains are easy to fall off due to the wear of the carcass, and the utilization rate is not high; on the other hand, because the diamond particles are mechanically embedded, the exposed height is small, and the cutting efficiency not tall. [0003] A new generation of br...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B24D18/00
CPCB24D18/0009
Inventor 肖冰王波肖博
Owner NANJING UNIV OF AERONAUTICS & ASTRONAUTICS
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