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The hardness of grinding wheel is divided into 14 parts

  • Categories:News
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  • Time of issue:2020-11-05 10:10
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(Summary description)There are many kinds of grinding wheels. According to the abrasive grains used, they can be divided into general abrasive wheels, natural abrasive super hard abrasive grains and (diamond and cubic boron nitride, etc.) grinding wheels; according to their shapes, they can be divided into flat grinding wheels, beveled edge grinding wheels, cylindrical grinding wheels, cup-shaped grinding wheels, disc grinding wheels, etc.; according to the binder, they can be divided into ceramic grinding wheels, resin grinding wheels, rubber grinding wheels, metal grinding wheels, etc. The characteristic parameters of grinding wheel mainly include abrasive grain, particle size, hardness, bond, shape, size, etc. Since the grinding wheel usually works at high speed, the rotary test and static balance test should be carried out before use. After working for a period of time, the grinding wheel should be trimmed to restore the grinding performance and correct geometry. The hardness of grinding wheel is divided into 14 parts Symbol: a B C D E F hardness grade: super soft (large grade, small grade) Symbol: G hardness grade: soft 1 Symbol: H hardness grade: soft 2 Symbol: J hardness grade: soft 3 Symbol: K hardness grade: medium soft 1 Symbol: l hardness grade: medium soft 2 Symbol: m hardness grade: medium 1 Symbol: n hardness grade: Medium 2 Symbol: P hardness grade: medium hard 1 Symbol: Q hardness grade: medium hard 2 Symbol: R hardness grade: medium hard 3 Symbol: s hardness grade: hard 1 Symbol: t hardness grade: hard 2 Symbol: y hardness grade: superhard Hardness of grinding wheel and hardness of abrasive grains are two different concepts. The same kind of abrasive can be made into grinding wheel with different hardness, which mainly depends on the performance and quantity of binder and the manufacturing process of grinding wheel. The significant difference between grinding and cutting is that the grinding wheel has "self sharpening". Choosing the hardness of the grinding wheel is actually to choose the self sharpening property of the grinding wheel. It is hoped that the sharp abrasive grains will not fall off too soon, and the grinding wheel will not fall off when it is blunt. The general principle of selecting the hardness of grinding wheel is: when processing soft metal, in order to prevent the abrasive particles from falling off prematurely, the hard grinding wheel is selected. When processing hard metal, in order to make the blunt abrasive grains fall off in time and expose the new abrasive particles with sharp edges and corners (i.e. self sharpening), soft grinding wheel is selected. The former is because the working abrasive wear of the grinding wheel is very slow when grinding soft materials, and it does not need to be separated too early; the latter is because the working abrasive wear of the grinding wheel is fast and needs to be updated quickly when grinding hard materials. In order to ensure the grinding accuracy and roughness, a slightly hard grinding wheel should be selected. The thermal conductivity of the workpiece material is poor and easy to burn and

The hardness of grinding wheel is divided into 14 parts

(Summary description)There are many kinds of grinding wheels. According to the abrasive grains used, they can be divided into general abrasive wheels, natural abrasive super hard abrasive grains and (diamond and cubic boron nitride, etc.) grinding wheels; according to their shapes, they can be divided into flat grinding wheels, beveled edge grinding wheels, cylindrical grinding wheels, cup-shaped grinding wheels, disc grinding wheels, etc.; according to the binder, they can be divided into ceramic grinding wheels, resin grinding wheels, rubber grinding wheels, metal grinding wheels, etc.

The characteristic parameters of grinding wheel mainly include abrasive grain, particle size, hardness, bond, shape, size, etc. Since the grinding wheel usually works at high speed, the rotary test and static balance test should be carried out before use. After working for a period of time, the grinding wheel should be trimmed to restore the grinding performance and correct geometry.

The hardness of grinding wheel is divided into 14 parts

Symbol: a B C D E F hardness grade: super soft (large grade, small grade)

Symbol: G hardness grade: soft 1

Symbol: H hardness grade: soft 2

Symbol: J hardness grade: soft 3

Symbol: K hardness grade: medium soft 1

Symbol: l hardness grade: medium soft 2

Symbol: m hardness grade: medium 1

Symbol: n hardness grade: Medium 2

Symbol: P hardness grade: medium hard 1

Symbol: Q hardness grade: medium hard 2

Symbol: R hardness grade: medium hard 3

Symbol: s hardness grade: hard 1

Symbol: t hardness grade: hard 2

Symbol: y hardness grade: superhard

Hardness of grinding wheel and hardness of abrasive grains are two different concepts. The same kind of abrasive can be made into grinding wheel with different hardness, which mainly depends on the performance and quantity of binder and the manufacturing process of grinding wheel. The significant difference between grinding and cutting is that the grinding wheel has "self sharpening". Choosing the hardness of the grinding wheel is actually to choose the self sharpening property of the grinding wheel. It is hoped that the sharp abrasive grains will not fall off too soon, and the grinding wheel will not fall off when it is blunt.

The general principle of selecting the hardness of grinding wheel is: when processing soft metal, in order to prevent the abrasive particles from falling off prematurely, the hard grinding wheel is selected. When processing hard metal, in order to make the blunt abrasive grains fall off in time and expose the new abrasive particles with sharp edges and corners (i.e. self sharpening), soft grinding wheel is selected.

The former is because the working abrasive wear of the grinding wheel is very slow when grinding soft materials, and it does not need to be separated too early; the latter is because the working abrasive wear of the grinding wheel is fast and needs to be updated quickly when grinding hard materials. In order to ensure the grinding accuracy and roughness, a slightly hard grinding wheel should be selected. The thermal conductivity of the workpiece material is poor and easy to burn and

  • Categories:News
  • Author:
  • Origin:
  • Time of issue:2020-11-05 10:10
  • Views:
Information

There are many kinds of grinding wheels. According to the abrasive grains used, they can be divided into general abrasive wheels, natural abrasive super hard abrasive grains and (diamond and cubic boron nitride, etc.) grinding wheels; according to their shapes, they can be divided into flat grinding wheels, beveled edge grinding wheels, cylindrical grinding wheels, cup-shaped grinding wheels, disc grinding wheels, etc.; according to the binder, they can be divided into ceramic grinding wheels, resin grinding wheels, rubber grinding wheels, metal grinding wheels, etc.

The characteristic parameters of grinding wheel mainly include abrasive grain, particle size, hardness, bond, shape, size, etc. Since the grinding wheel usually works at high speed, the rotary test and static balance test should be carried out before use. After working for a period of time, the grinding wheel should be trimmed to restore the grinding performance and correct geometry.

The hardness of grinding wheel is divided into 14 parts

Symbol: a B C D E F hardness grade: super soft (large grade, small grade)

Symbol: G hardness grade: soft 1

Symbol: H hardness grade: soft 2

Symbol: J hardness grade: soft 3

Symbol: K hardness grade: medium soft 1

Symbol: l hardness grade: medium soft 2

Symbol: m hardness grade: medium 1

Symbol: n hardness grade: Medium 2

Symbol: P hardness grade: medium hard 1

Symbol: Q hardness grade: medium hard 2

Symbol: R hardness grade: medium hard 3

Symbol: s hardness grade: hard 1

Symbol: t hardness grade: hard 2

Symbol: y hardness grade: superhard

Hardness of grinding wheel and hardness of abrasive grains are two different concepts. The same kind of abrasive can be made into grinding wheel with different hardness, which mainly depends on the performance and quantity of binder and the manufacturing process of grinding wheel. The significant difference between grinding and cutting is that the grinding wheel has "self sharpening". Choosing the hardness of the grinding wheel is actually to choose the self sharpening property of the grinding wheel. It is hoped that the sharp abrasive grains will not fall off too soon, and the grinding wheel will not fall off when it is blunt.

The general principle of selecting the hardness of grinding wheel is: when processing soft metal, in order to prevent the abrasive particles from falling off prematurely, the hard grinding wheel is selected. When processing hard metal, in order to make the blunt abrasive grains fall off in time and expose the new abrasive particles with sharp edges and corners (i.e. self sharpening), soft grinding wheel is selected.

The former is because the working abrasive wear of the grinding wheel is very slow when grinding soft materials, and it does not need to be separated too early; the latter is because the working abrasive wear of the grinding wheel is fast and needs to be updated quickly when grinding hard materials. In order to ensure the grinding accuracy and roughness, a slightly hard grinding wheel should be selected. The thermal conductivity of the workpiece material is poor and easy to burn and

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