Special Price for A/C Expansion Valve - Carbon block price , metal contented for heat treatment – VET Energy Detail:
Graphite block is made from the domestic petroleum coke and widely used in the metallurgy, machinery, electronics and chemical industry, etc. The graphite block include molded, extruded, vibrated and isostatic.
Process :
Raw material ->Medium crushing / milling ->Screening -> dosing -> kneading-> vibrated molding->impregnation -> baking-> graphitization
Physical and chemical index
Item | Unit | Isostaic graphite |
Grain size | μm | 5-22 |
Bulk density | g/cm3 | 1.8-1.85 |
Specific resistance | μΩ.m | ≤15 |
Bending strength | Mpa | ≥40 |
Compressive strength | Mpa | ≥85 |
Shore hardness | ≥65 | |
C.T.E.(100-600)℃ | 10-6/℃ | 4.0-5.2 |
Modulus of elasticity | Gpa | 10-12.5 |
Ash | % | ≤0.03% |
High pure graphite | |||||
Item | Unit | Baked twice | Baked three times | Baked four times | |
Impregnated once | Impregnated twice | Impregnated three time | |||
Grain size | Mm | ≤325 mesh | ≤325 mesh | ≤325 mesh | |
Bulk density | g/cm3 | ≥1.68 | ≥1.78 | ≥1.85 | |
Specific resistance | μΩ.m | ≤14 | ≤14 | ≤13 | |
Bending strength | Mpa | ≥25 | ≥40 | ≥45 | |
Compressive strength | Mpa | ≥50 | ≥60 | ≥65 | |
Ash content | % | ≤0.15 | ≤0.1 | ≤0.05 |
Product detail pictures:
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