来源：http://jnggsdz.com 发布时间：2018-12-05 17:11:58
Why is aluminium a non-ferrous metal? In the narrow sense, non-ferrous metals are also called non-ferrous metals, which are the collective name of all metals except iron, manganese and chromium. In the broad sense, non-ferrous metals also include non-ferrous alloys (alloys based on a non-ferrous metal (usually more than 50%) with one or several other elements added).
The density of aluminium is small, only 2.7g/cm. There is a dense AlO film on the surface, which prevents the internal aluminium from reacting and is not easy to be oxidized. It is a common material for aircraft. 70% of modern aircraft are made of aluminium and aluminium alloy, so it is called flying metal.
Without surface treatment, the appearance of aluminium profiles is not beautiful, and it is easy to be corroded in humid air, so it is difficult to meet the requirements of high decoration and strong weatherability of aluminium profiles in building materials. In order to improve decoration effect, enhance corrosion resistance and prolong service life, aluminium profiles generally need surface treatment.
Aluminum granules are also known as aluminium balls and aluminium sand. Aluminum granules are refined by repeated drawing, cutting and grinding of aluminium ingots containing 99% aluminium. Bright appearance, cylindrical, applied to the surface of aluminium, zinc or thin-walled workpieces.
It is widely used in surface finishing of aluminium castings, copper and zinc castings, sandblasting grinding of various metal surfaces, deburring and burring of casting workpieces, sandblasting grinding of blade surfaces and surface of casting products, etc. It can make your products smooth, smooth, shiny and achieve whitening effect.
同时铝粒又可与不锈钢砂、不锈钢丸参合使用，达到对工件表面更白更亮的效果。铝粒，LED半导体 ，蒸渡 用的比较多，对纯度要求也比较高。
At the same time, aluminium particles can be used in combination with stainless steel sand and stainless steel pellets to achieve whiter and brighter surface of the workpiece. Aluminum particles, LED semiconductors, steaming is used more, the purity requirements are relatively high.
What is the use of aluminium particles? It can be widely used to finish the surface of aluminium castings and zinc and copper castings, sandblasting and polishing various metal surfaces, deburring and burring of casting parts, or sandblasting and polishing of casting products and blade surfaces. Aluminum particles can make your metal products flat, smooth, shiny and achieve whitening effect. At the same time, aluminium particles can be used in combination with stainless steel sand and stainless steel pellets to achieve whiter and brighter surface of the workpiece. In the LED semiconductor, steaming is used more, the purity requirements are also relatively high.