About the technology of surface treatment of CNC processing products

What is the surface treatment of CNC processing products? Generally, some metals, stainless steel, aluminum, and machine and equipment shells need to be modified and beautified after preliminary processing and molding, which is called surface treatment of CNC product processing.

There are generally four categories of surface treatments for CNC processing products: 1. Beautiful, 2. Protection, 3. Special surface treatment, 4. Mechanical or engineering surface treatment. Although the surface treatment industry is not the mainstream of the industry, only through surface treatment can the characteristics and value of the products be fully utilized. It uses industrial technologies such as electroplating, anode treatment, chemical treatment, and coating to achieve corrosion resistance, enhance welding, lubricity, wear resistance, adhesion and steel carburization prevention. Therefore, surface treatment is an indispensable process in various CNC processing and manufacturing industries.

About the technical types of surface treatment of CNC processing products

Surface formation is divided into three categories:

1. Mechanical method (bead strike method, cutting, elbow grinding, sandblasting, fine grinding, grinding, super processing)

2. Metallurgical method (surface hardening, (quenching, carburizing, nitriding), diffusion film method)

3. Chemical method (electrolytic grinding, pickling, chemical grinding, acid etching engraving)

About the pretreatment of CNC processing products

The significance of pre-processing

The general pretreatment engineering process is: grinding, preparation, washing, water washing, electrolysis, deesterization, water washing, acid irrigation and activated water, neutralization, water washing, and electroplating.

Purpose of pre-processing

The purpose of pretreatment is to obtain a good plating layer. Since the plating parts will have oil esters, oxide rust, hydroxides, dust and other dirt attached to the surface of the plating parts during manufacturing, processing, handling and storage. If it is not removed, Electroplating of these dirts will not result in good plating. The quality of the plated parts plays an important role.

Coating defects caused by poor pretreatment

The coating defects caused by poor pretreatment include the following items: (1) peeling, (2) bloating, (3) stains, (4) uneven gloss, (5) uneven concave and bumps, (6) small holes (7 ) Reduce corrosion resistance, (8) embrittlement, (9) Poor electroplating, pretreatment accounts for a large reason.

The above are the techniques for surface treatment of CNC processing products. If you have any better suggestions, you can call us for consultation and negotiation.