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黑色碳化硅

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Black Silicon Carbide(C)

Black silicon carbide is produced at high temperature in an electric resistance type furnace with quartz sand and petroleum coke as its main raw materials. Its hardness is between fused alumina and synthetic diamond. The mechanical intensity of it is higher than fused alumina. It is brittle and sharp and has electrical and heat conductivity in some degree. The abrasives made of it are suitable for working on cast iron, non-ferrous metal, rock, leather, rubber, etc. It is also broadly used as refractory material and metallurgical additive.

Type value of black silicon carbide physical chemical performance index

For vitrified wheels and belts: C

For organic wheels: C-B

For sheets: C-P

Black Silicon Carbide Chemical Composition & Magnetic Contents of China GB/T2480-1996

GB/T 2480-1996

Chemical Composition(%,by weight)

Magnetic contents

Type

Grit size

SiC

F.C

Fe2O3

Grit size

Magnetic contents
(%) ≤

C

F12~F90
P12~P100

98.50

0.20

0.60

F16-F30
P12-P30

0.030

F100~F150
P120~P150

98.00

0.30

0.80

F36-F60
P36-P60

0.025

F180~F220
P180~P220

97.00

0.30

1.20

F70-F120
P80-P150

0.020

 

 

 

 

F150-F220
P180-P220

0.015

C-B
C-P

F12~F90
P12~P100

98.00

0.25

0.70

F16-F30
P12-P30

0.075

F100~F150
P120~P150

97.50

0.35

0.90

F36-F60
P36-P60

0.065

F180~F220
P180~P220

96.00

0.35

1.35

F70-F120
P80-P150

0.055

 

 

 

 

F150-F220
P180-P220

0.035

Reference chemical composition of silicon carbide (TN) of non-abrasives application:

Type

Reference chemical composition (%)

Size(mm)

  SiC

  F.C.

  Fe2O3

  TN98

  ≥98.00

   <1.00

<0.50

50~0

  TN97

  ≥97.00

   <1.50

<0.80

13~0

  TN95

  ≥95.00

   <2.50

<1.00

10~0

  TN90

  ≥90.00

   <3.00

<2.50

5~0

  TN88

  ≥88.00

   <3.50

<3.00

0.5~0

  TN85

  ≥85.00

   <5.00

<3.50

100F

  TN60

  ≥60.00

   <12.00

<3.50

200F

  TN50

  ≥50.00

   <15.00

<3.50

325F

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