Sand blasting is a process of cleaning and roughening the surface of the substrate by the impact of high-speed sand flow, and has been widely used in many industrial fields. The surface of many CNC parts in daily life is not a mirror surface, but a somewhat rough “frosted” effect. This “textured” effect is liked by many people. This is a very common process in metal finishing called sandblasting.
Sandblasting has won the favor of many industries for its unique process characteristics, so what are the main applications of sandblasting technology?
1. Improve the performance of CNC parts machining
After the CNC parts are processed by CNC and then sandblasted, in addition to improving the smoothness of 0.5-1 grade on the original basis, the sprayed surface has microscopic uniform pits, which can keep the storage of lubricating oil and improve the lubrication conditions, so it can Extend the service life of parts and reduce the noise of mechanical operation. Such as: gears, crankshafts, textile machinery, sewing machinery, etc.
2. Clean the rough surface of precision castings
The sand blasting process can clean the oxide skin and residues on the surface of precision castings, and at the same time can play a polishing role to improve the surface finish of castings, such as: aeroengine turbine blades, surgical instruments, jewelry, etc. It can also make the casting parts reveal the consistent metal color, making the appearance of the parts more beautiful. Such as: various Watch Case, frames, etc.
3. Prepare for other surface treatment processes
Sand blasting process is used for pretreatment before electroplating CNC parts, and the electroplating layer has strong bonding force, especially for hard chrome plating. Such as: chrome plating of engine piston rings, chrome plating of spinning machine rollers, etc. For painted parts and sprayed parts, the sandblasting process before spraying can enhance the bonding force of the coating; the bonded parts adopt the sandblasting process to have good bonding quality and stronger bonding.
4. Aluminum sand blasting process to clean dirt and rust
Various molds, such as forging dies, stamping dies, rubber molds, tire molds, plastic pressing molds, glass product molds, etc., will inevitably be contaminated with release agent and other dirt and burn marks after a period of use. Sandblasting is used to clean them, and the effect is very good Significantly, at the same time can improve the service life of the mold.
5. Sand blasting process to remove scale
Various metal CNC machining parts after heat treatment will be accompanied by substances such as scale, residual salt, stains, etc. Sand blasting process can not only remove these substances, but also improve the surface finish of parts, especially for molds with complex shapes and precision CNC The effect of machining parts is particularly prominent.
6. Sand blasting process for surface decoration
Sandblasting is an effective process for parts that require smooth surfaces and do not allow reflections, such as surgical instruments. Others, such as frosted glassware and patterns, instrument panels, plastic drawing sandpaper machining, and plush machining of special fabrics, etc., sandblasting technology has a wide range of applications.
7. Remove burrs from CNC machining parts
Although the burrs are small, they are very harmful. With the advancement of science and technology, CNC parts are becoming more and more complex, and the precision requirements are getting higher and higher. The application conditions are very strict, and no burrs are allowed, such as: 3C communication industry, textile machinery parts, hydraulic components, aerospace Industrial precision and complex parts, medical devices, castings on dental restorations, etc.
8. Finishing process of sand blasting process
As a finishing method, sandblasting works very well. Especially for parts with complex shapes, such as: impeller engine blades, various mold surfaces (money molds, incense coins, commemorative coin molds), the polishing is unmatched by any other method. Sandblasting is the most economical way to polish ceramics, diamonds, and gold and silver jewelry.
Because the sand blasting process has so many advantages, it is widely used in various fields, and as the parts and molds become larger and larger, the sand blasting process also tends to develop in the direction of large-scale.
The above are the 8 major applications of sandblasting technology, I hope it will be helpful to you.