CNC Machining: 4 Main Points of Sandblasting Process for Aluminum Shell CNC Machining

As a popular process for aluminum die-casting CNC machining parts, sandblasting process is widely used in various aluminum alloy shell die-casting parts. If you want to make beautiful aluminum alloy die-casting parts, you need to pay attention to the following four points in the sandblasting process of aluminum shell CNC machining:

First, the surface of the aluminum die-casting CNC machining parts shell should be cleaned before sandblasting. The cleaning process is to use sulfuric acid to remove surface oil and dirt, and after pickling, neutralize it with alkali;

Second, after pickling, dry or dry the aluminum die-casting CNC machined parts to check the surface, mainly to check whether it is clean, whether there is watermark, whether there is yellowing, etc.

Third, sandblasting is a process of roughening the surface of the aluminum alloy shell through the impact of high-speed sand flow. The type of sand used is generally 80# - 320#, the larger the value, the smaller the sand. The roughness of the sand grains on the CNC machined surface of the aluminum casing is determined by the sand grain type and the blasting pressure. Under the same pressure, the larger the sand grain value, the finer the surface; and when the sand grain type is the same, the greater the pressure, the finer the surface. thick.

Fourth, sandblasting is divided into manual sandblasting and automatic sandblasting. The efficiency of manual sandblasting is relatively slow, and sometimes the spraying is uneven; the automatic sandblasting efficiency is high, and the surface thickness is uniform.

Aluminum die-casting CNC machining products are more and more widely used, and more and more products are replaced by aluminum alloys. If you want to make beautiful-looking aluminum shell die-casting CNC machining parts, you also need to go through a series of external surface treatments, and the sandblasting process is CNC machining of aluminum casings is relatively common, and the effect after processing is also deeply loved by consumers!

The above is just the opinion of the VMT CNC machining factory. If you have a better one, you can contact us: inquiry@vimetal.com.cn to discuss with us.

VMT13 years custom precision die-casting CNC machining parts, metal, plastic prototype processing. Its business covers 62 countries around the world, covering military, medical, semiconductor, automotive and other fields. 40+ materials and 15+ surface finish options with free service design, project reviews and DFM analysis. To ensure the quality of CNC machined parts, we passed the ISO9001 quality system, IATF16949 certificate and SGS on-site factory audit in 2015. No matter how complicated your part structure is, or your product encounters technical problems, we can provide you with professional services, saving you 15% of the time cost and communication cost!