There are several surface treatment techniques for CNC precision machining

There are several surface treatment techniques for cnc precision machining

cnc precision machining is a technique for precision machining with computer digital control, and the processing range is wide. CNC precision machining occasionally performs corresponding surface treatment according to the situation, so let's take a look at the surface treatment techniques of CNC precision machining. CNC precision processing factory

1. Manual disposal: such as scrapers, wire brushes or grinding wheels. The rust and oxide skin on the surface of the workpiece can be removed by hand, but the manual treatment is heavy, the production efficiency is low, the quality is poor, and the cleaning is not thorough.

Second, chemical treatment: the main goal is to use acid-base solution to react with workpiece, surface oxides and oil, and then ablate in acid-base solution , to remove oxides and oils from the surface of the workpiece. Then wash with nylon cloth and stainless steel wire brush.

Three, machine disposal: mainly including wire brush roller polishing, shot blasting.

1. The polishing technique is that the brush roller is driven by a motor, and the brush roller rotates at a high speed on the high and low surfaces of the belt in a direction opposite to the action of the rolling piece. The washed iron oxide flakes are cleaned by a closed circulating cooling water cleaning system. Shot blasting is a technique that uses centrifugal force to accelerate projectiles and spray them into the workpiece to remove rust.

2. Shot peening is divided into shot peening and sandblasting. The surface treatment of shot peening has a great influence, and the cleaning results are obvious. However, shot peening is easy to deform the thin plate workpiece, and steel shot peening will affect the surface of the workpiece and deform the metal substrate. Since Fe304 and FE203 are not plastics, they will peel off due to cracking, and the oil film will deform with the workpiece. Shot peening cannot completely remove the oil pollution of the workpiece.