The process flow is as follows:
Manual pretreatment → hot water washing → pre-degreasing → degreasing → industrial washing → surface adjustment → phosphating → industrial washing → industrial washing → pure washing → pure washing → pouring water → drying.
The above technological process can also be properly adjusted according to the oil quality and corrosion of sheet stamping parts, or pickling or pre-degreasing processes are not needed. Degreasing and phosphating are key processes in chemical treatment process, which directly affect the quality of chemical treatment of workpiece and the quality of antirust coating. Related process parameters and related auxiliary equipment are also factors that can not be ignored to affect the quality of surface treatment.
Extended data
Construction equipment:
Direct shot blasting room
The walk-through shot blasting room consists of cleaning room, shot blasting device, shot circulation system, ventilation and dust removal system, bottom foundation and electrical control system. Non-standard design of different sizes can be carried out according to different specifications of the workpiece, and sizing equipment can also be selected.
The invention is suitable for cleaning and strengthening the surfaces of construction machinery structural parts and forged castings, so as to obtain smooth surfaces with certain roughness, increase the adhesion of coatings and improve the anti-corrosion effect of workpieces.
When the workpiece enters the shot blasting chamber, the shot blasting machine driven by the motor centrifugally throws high-speed projectiles, which strongly impacts the rust and scale on the surface of the workpiece. The workpiece is cleaned after uniform motion or several revolutions, and the surface quality can reach the standard of SA2 ~ SA2.5.
Baidu encyclopedia-painting