Alumina ceramic substrate is a hard‑brittle electronic ceramic. By adjusting the grade and particle size of white fused alumina powder, the process is divided into two stages: grinding & thinning (coarse‑medium‑fine grinding) and final mirror polishing. Main equipment: double‑side grinding machine, surface grinding machine, CMP (Chemical Mechanical Planarization) machine. 1. Grinding & Thinning Process (material

White Fused Alumina Micron Powder – Particle Size Conversion Table White fused alumina micron powder is produced from high-purity alumina. The raw material is melted at high temperature in an electric arc furnace, cooled and crystallized, then subjected to primary manual crushing, jaw crushing, ball mill grinding, water washing / acid pickling for impurity removal,

White fused alumina suppliers fall into four main categories: WFA ingot smelters, WFA grit processors, professional WFA micropowder manufacturers and trading intermediaries. Customers may select suitable partners according to their product application, index requirements and procurement needs. In terms of raw ingots, WFA ingots are classified into fixed-furnace ingots and tilting-furnace ingots, which differ significantly

Floating Oil Seal Ring Material: 420 / 440C Stainless Steel. The sealing surface requires a mirror finish of Ra 0.04‑0.08 μm with no deep scratches. The mainstream abrasive used in the industry is white fused alumina micropowder (national standard lapping micropowder, JIS lapping micropowder), Al₂O₃ ≥99.2%, acid-washed, dried and magnetic separated. Oversized particles are strictly

What is the oil absorption value of white fused alumina? The oil absorption of white fused alumina for floor coatings is related to its particle size. The coarser the grit, the lower the oil absorption value; the finer, more micropowdered and dustier the product, the higher the oil absorption value. Our white fused alumina has

Core rule of thumb: Use softer-grade wheels for hard workpieces and harder-grade wheels for soft workpieces; coarser grit for rough grinding and finer grit for finish grinding; vitrified bond V is preferred for precision steel parts. WA applicable materials: Hardened steel, high-speed steel, alloy steel, thin-walled components, thread/gear/cutter sharpening, precision grinding where workpiece burn must