1. Pretreatment before processing

Remove blank impurities: Sand, scale, release agents, etc. on the surface of casting and forging blanks need to be removed before machining to avoid contaminating the cutting fluid and accelerating tool wear.

Eliminate storage pollutants: Rust-proof oil, dust, etc. on the surface of inventory parts affect the positioning accuracy. Cleaning is required to ensure a tight fit between the fixture and the part.

2. Cleaning between processes

Treatment of cutting fluid residue: After processes such as turning and milling, if the emulsions and cutting oils remaining on the part surface are not removed, it may lead to a decline in machining accuracy in subsequent processes (such as grinding and electrical discharge machining) or cause corrosion.

Removal of chips and burrs: After precision machining (such as gear machining and thread machining), fine chips or burrs may embed in the part surface, affecting the machining quality of the next process (such as foreign object wear during bearing installation).

3. Final inspection after processing and cleaning before assembly

Cleanliness requirements for precision parts: High-precision parts in fields such as aerospace and medical devices (such as hydraulic valves and bearings) need to meet micron-level cleanliness standards through cleaning to avoid functional failures caused by impurities.

Pretreatment for surface treatment: Before electroplating, spraying, and anodizing, the grease and pollutants on the part surface must be thoroughly removed; otherwise, it will result in insufficient coating adhesion or pitting.