what abrasives will be used during cookware manufacturing?
What abrasives will be used in cookware manufacturing depending primarily on the processing stage (such as coarse grinding, medium polishing and fine polishing) and the cookware material (such as stainless steel, cast iron, and titanium alloy).
Zhengzhou haixu abrasives co.,ltd,as manufacturer of abrasives from china for many years,from the dealing cases,we can make a conclusion as follows:
1.For the surface treatment of cookware,usually use white fused alumina or brown fused alumina for blasting,mainly sizes is F40 F60 or F80.
The chemical compostion and physical properties of white fused alumina and brown fused alumina is as follows seperately:
| Item | White fused alumina | Brown fused alumina |
| Al2O3 | ≥99.5% | ≥95.0% |
| Fe2O3 | ≤0.04% | ≤0.30% |
| SiO2 | ≤0.10% | ≤1.0% |
| Na2O | ≤0.30% | / |
| Mohs Hardness | 9.0 | 9.0 |
| Specific Gravity | 3.90g/cm3 | 3.90g/cm3 |
| Bulk Density | 1.75-1.95g/cm3 | 1.53-1.99g/cm3 |
Particle range of F40 F60 &F80
| Size | Particle Range/um |
| F40 | 500-425 |
| F60 | 300-250 |
| F80 | 212-180 |
2.For non-stick coating ,usually use green silicon carbide #800mesh #1000mesh and #1200mesh.
The chemical compostion and physical properties of green silicon carbide is as follows:
| SiC | ≥98.5% |
| CF | ≤0.20% |
| Fe2O3 | ≤0.40% |
| SiO2 | ≤0.05% |
| Density | ≥3.18g/cm3 |
| Mohs Hardness | 9.4 |
| Melting Point | 2250℃ |
| Refractoriness | 1900℃ |
PSD(Particle Size Distribution) of green silicon carbide #800 #1000 Ұ
| Size | DO(um) | D3(um) | D50(um) | D94(um) |
| #800 | ≤38 | ≤31 | 14.0±1.0 | ≥9.0 |
| #1000 | ≤32 | ≤27 | 11.5±1.0 | ≥7.0 |
| #1200 | ≤27 | ≤23 | 9.5±0.8 | ≥5.5 |
