Ceramic bonding agent, preparation method thereof and application in CBN grinding wheel

A vitrified bond and grinding wheel technology, which is applied in the direction of manufacturing tools, metal processing equipment, grinding/polishing equipment, etc., can solve the problems of unsatisfactory structure of grinding wheel, inability to adopt large feed rate, insufficient holding force of abrasive grains, etc. Achieve the effects of small thermal expansion coefficient, increased strength, and reduced grinding wheel dressing times

Inactive Publication Date: 2019-03-15
广东奔朗新材料股份有限公司 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] At present, there are few studies on the CBN grinding wheel used for grinding the inner circle of 20CrMo material, and the CBN grinding wheel currently used for processing 20CrMo has shortcomings such as low processing efficiency and frequent dressing of the grinding wheel. The vitrified bond has insufficient holding force on the abrasive grains and its own strength is low, so a large feed rate cannot be adopted during grinding; on the other hand, the grinding wheel needs frequent dressing due to the unsatisfactory structure of the grinding wheel

Method used

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  • Ceramic bonding agent, preparation method thereof and application in CBN grinding wheel
  • Ceramic bonding agent, preparation method thereof and application in CBN grinding wheel

Examples

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preparation example Construction

[0041] The preparation method of above-mentioned ceramic bond, comprises the steps:

[0042] The step of preparing materials: use the electronic balance to weigh the raw materials of the formula amount for standby;

[0043] Mixing step: after the weighing is completed, put the raw materials into the mixing tank, and mix them evenly on the automatic mixer; as a further embodiment, the mixing time of the mixing is 50-70min;

[0044] Melting step: put the uniformly mixed raw materials into a corundum crucible, put them into a high-temperature energy-saving frit furnace for melting; as a further embodiment, the firing temperature is 1380-1480°C, and the firing The time is 60-120min;

[0045] The step of water quenching: after the solute is kept warm, it is quenched and rapidly cooled by water to obtain glass frit; as a further embodiment, the temperature of the solute is 1425-1435°C, and the temperature is kept for 55-65min;

[0046] The step of ball milling: then glass frit is ...

Embodiment 1

[0060] A CBN grinding wheel, comprising the following components in parts by weight: 45 parts of CBN abrasive particles with a particle size of 80 / 100 mesh, 12 parts of CBN abrasive particles with a particle size of 100 / 120 mesh, 20 parts of vitrified bond, and a particle size of 80 / 100 Purpose Microcrystalline corundum SG 15 parts, binder 2 parts.

[0061] The vitrified bond is prepared from the following components in parts by weight: 41.0 parts of quartz, 4.0 parts of aluminum oxide, 19.0 parts of boric acid, 3.0 parts of zinc oxide, 6.0 parts of lithium carbonate, 2.5 parts of carbonic acid Sodium, 15.0 parts of barium carbonate, 2.0 parts of strontium carbonate.

[0062] The preparation method of this vitrified bond comprises the steps:

[0063] The step of preparing materials: use the electronic balance to weigh the raw materials of the formula amount for standby;

[0064] Mixing steps: After the weighing is completed, put the raw materials into the mixing tank and mix...

Embodiment 2

[0077] A CBN grinding wheel, comprising the following components in parts by weight: 47.1 parts of CBN abrasive particles with a particle size of 80 / 100 mesh, 15.7 parts of CBN abrasive particles with a particle size of 100 / 120 mesh, 21.0 parts of vitrified bond, and a particle size of 80 / 100 Objective microcrystalline corundum SG 16.2 parts, binder 2 parts.

[0078] The vitrified bond is prepared from the following components in parts by weight: 42.5 parts of quartz, 5 parts of aluminum oxide, 20.0 parts of boric acid, 4.0 parts of zinc oxide, 7.0 parts of lithium carbonate, 3.0 parts of carbonic acid Sodium, 16.0 parts of barium carbonate, 2.8 parts of strontium carbonate.

[0079] The preparation method of this vitrified bond comprises the steps:

[0080] The step of preparing materials: use the electronic balance to weigh the raw materials of the formula amount for standby;

[0081] Mixing steps: After the weighing is completed, put the raw materials into the mixing tank...

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Abstract

The invention discloses a ceramic bonding agent, a preparation method thereof and an application in a CBN grinding wheel, wherein the ceramic bonding agent is prepared from the following components inparts by weight: 41.0 to 44.5 parts quartz, 4.0 to 5.5 parts of alumina, 19.0 to 21.0 parts of boric acid, 3.0 to 5.0 parts of zinc oxide, 6.0 to 8.0 parts of lithium carbonate, 2.5 to 3.5 parts of sodium carbonate, 15.0 to 17.5 parts of barium carbonate, 2.0 to 3.5 parts of strontium carbonate. The preparation method of the ceramic bonding agent comprises the following steps: material preparation step, mixing step, melting step, water quenching step, ball milling step, particle size detection step and drying step. The ceramic bonding agent wets and coats the CBN abrasive particles well, increases the holding force of the bonding agent to the abrasive particles, and improves the strength of the bonding agent.

Description

technical field [0001] The invention relates to a superhard grinding tool technology, in particular to a vitrified bond, its preparation method and its application in a CBN grinding wheel. Background technique [0002] Cubic boron nitride (CBN) is a superhard material second only to diamond in hardness, and as an abrasive, it has the advantages of good wear resistance, high thermal conductivity, good thermal stability, and good chemical inertness to iron groups, so it is widely used. Used in the manufacture of grinding wheels. In the grinding process of the grinding wheel, the bonding agent in the grinding wheel plays a role in holding the abrasive grains, ensuring that the abrasive grains will not fall off prematurely during the grinding process, and the wear resistance of CBN abrasive grains is better, so As a bonding agent for CBN grinding wheels, it needs to have a high holding force on CBN abrasive grains and has the characteristics of high strength itself. The vitrif...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B24D3/14B24D3/34B24D18/00C04B35/58C04B35/622
CPCB24D3/14B24D3/342B24D18/00B24D18/0009C04B35/58C04B35/622
Inventor 孙会冰赵玉成
Owner 广东奔朗新材料股份有限公司
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