Ceramic CBN arc grinding wheel with embedded transition layer and preparation method of ceramic CBN arc grinding wheel

A transition layer, embedded technology, applied in the direction of bonded grinding wheels, manufacturing tools, metal processing equipment, etc., can solve the problems of grinding wheel cracking, abrasive waste, etc., achieve low abrasive cost, improve overall stability, and avoid grinding wheel expansion crack problem

Pending Publication Date: 2021-08-31
NANJING SANCHAO ADVANCED MATERIALS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, in the process of using the grinding wheel, it often occurs that the abrasive layer and the substrate are separated due to internal stress or when the last 1-2 mm of the abrasive layer is left, it cannot be used anymore, resulting in waste of abrasives, and heat conduction at the grinding interface during grinding Giving the grinding wheel matrix is ​​easy to cause the grinding wheel to burst

Method used

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  • Ceramic CBN arc grinding wheel with embedded transition layer and preparation method of ceramic CBN arc grinding wheel
  • Ceramic CBN arc grinding wheel with embedded transition layer and preparation method of ceramic CBN arc grinding wheel
  • Ceramic CBN arc grinding wheel with embedded transition layer and preparation method of ceramic CBN arc grinding wheel

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] Such as Figure 1 to Figure 3 As shown, the embedded transition layer ceramic CBN arc grinding wheel includes an original disc-shaped steel substrate 1 and a double-layer abrasive ring 2 .

[0033] Wherein: the steel substrate 1 is 45# steel, which is formed by splicing the first substrate 11 and the second substrate 12, and the first substrate 11 and the second substrate 12 are spliced ​​to form an embedding groove 13;

[0034] The double-layer abrasive ring 2 is embedded in the embedding groove 13, the double-layer abrasive ring 2 includes a transition layer 21 on the inner periphery and an abrasive layer 22 on the outer periphery, the transition layer 21 and the abrasive layer 22 are integrated molding structure. The transition layer 21 is a ceramic green silicon carbide layer, the abrasive layer 22 is a ceramic CBN layer, the thickness of the transition layer 21 is the same as that of the abrasive layer 22 (ceramic CBN layer), and the width of the transition layer ...

Embodiment 2

[0046] The preparation method of this embodiment is the same as that of Embodiment 1, the difference is that the ratio of raw materials in the vitrified bond, the transition layer, and the abrasive layer is different; wherein:

[0047] Raw material ratio of vitrified bond: The mass ratio of zirconia, calcium carbonate, lithium carbonate, sodium carbonate, boric acid and silicon dioxide is 5:7:4:16:31:45.

[0048] The raw material ratio of the transition layer mixture: the mass ratio of green silicon carbide abrasive, vitrified bond, and resin liquid is 45:28:7.

[0049] The raw material ratio of the abrasive layer mixture: the mass ratio of CBN abrasive, vitrified bond, and resin liquid is 52:25:6.

Embodiment 3

[0051] The preparation method of this embodiment is the same as that of Embodiment 1, the difference is that the ratio of raw materials in the vitrified bond, the transition layer, and the abrasive layer is different; wherein:

[0052] Raw material ratio of ceramic bond: the mass ratio of zirconium dioxide, calcium carbonate, lithium carbonate, sodium carbonate, boric acid and silicon dioxide is 8:7:6:16:34:50.

[0053] The raw material ratio of the transition layer mixture: the mass ratio of green silicon carbide abrasive, vitrified bond, and resin liquid is 62:33:9.

[0054] Raw material ratio of abrasive layer mixture: the mass ratio of CBN abrasive, vitrified bond and resin liquid is 62:32:8.

[0055] The conventional ceramic CBN broach grinding wheel on the market and the embedded transition layer ceramic CBN arc grinding wheel prepared in Example 1, Example 2, and Example 3 were used as a comparison.

[0056] When domestic customers process W18Cr4V material broaches, perf...

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Abstract

The invention belongs to the technical field of grinding wheel preparation, and particularly discloses a ceramic CBN arc grinding wheel with an embedded transition layer and a preparation method of the ceramic CBN arc grinding wheel. The ceramic CBN arc grinding wheel comprises a steel base body and a double-layer abrasive ring, the steel base body is formed by splicing a first base body and a second base body, and an embedded groove is formed after the first base body and the second base body are spliced. The double-layer abrasive ring is embedded in the embedding groove, the double-layer abrasive ring comprises a transition layer located on the inner periphery and an abrasive layer located on the outer periphery, and the transition layer and the abrasive layer are of an integrally-formed structure. The use amount of the CBN layer of the grinding wheel can be effectively increased, the knocking-over probability of the grinding wheel is reduced, the heat conduction coefficient of the CBN layer is closer to that of the steel base body, and therefore the problem that the grinding wheel bursts due to the fact that heat of a grinding interface is directly conducted to the grinding wheel base body during grinding can be solved. The problems of CBN grinding material waste, grinding wheel knocking-over and grinding wheel abrasive layer spalling in the prior art are effectively solved, and great economic value and social value are achieved.

Description

technical field [0001] The invention belongs to the technical field of grinding wheel preparation, and in particular relates to an embedded transition layer ceramic CBN arc grinding wheel and a preparation method thereof. Background technique [0002] In the prior art, the transition layer grinding wheel is mainly based on resin bond, and the application of vitrified bond is seldom, and the technology is very difficult, and the abrasive layer of ceramic CBN grinding wheel is directly bonded to the outer circle and end face of the steel substrate On, in-line bonding is unique. [0003] The traditional preparation process of ceramic CBN grinding wheel is to cold press the ceramic CBN layer into a green body first, then solidify and sinter, match the sintered ceramic CBN layer with the steel substrate, and then bond and shape it, trim it to the required shape and shape. size. During the sintering process of ceramic CBN grinding wheel, deformation often occurs. Therefore, in ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B24D3/14B24D5/02B24D5/14B24D5/16
CPCB24D3/14B24D5/02B24D5/14B24D5/16
Inventor 邹余耀谢亚辉
Owner NANJING SANCHAO ADVANCED MATERIALS
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