铝为什么是有色金属？狭义的有色金属又称非铁金属，是铁、锰、铬以外的所有金属的统称；广义的有色金属还包括有色合金（以一种有色金属为基体（通常大于50%），加入一种或几种其他元素而构成的合金）。
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).
铝的密度小，只有2.7g/cm，表面存在致密的AlO薄膜，阻止内部的铝进行反应，不易被氧化。它是飞机常用的材料，现代飞机有70%是铝和铝合金制造的，所以叫会飞的金属。
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.
铝型材如果不经表面处理，外观不美观，而且在潮湿空气中容易被腐蚀，这样很难达到建筑材料中对铝型材高装饰性和强耐候性的要求，为了提高装饰效果、增强抗腐蚀性及延长使用寿命，铝型材一般都要进行表面处理。
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.
铝粒又名铝丸、铝砂，铝粒采用含99%铝的铝锭反复拉丝、裁切、研磨等工艺精制而成。外观光亮、圆柱状、应用于铝、锌或薄壁工件的表面。

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.
广泛应用于铝铸件及铜、锌铸件的表面精加工处理，各种金属表面的喷沙打磨，铸造工件的除毛边、毛刺，刃物表面、铸造制品表面的喷沙打磨等。可使您的产品平整、光洁、发亮、达到增白的效果。
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.
铝粒有什么用途？可以广泛应用于铝铸件及锌、铜铸件表面的精加工处理，对各种金属表面进行喷沙打磨，为铸造工件的除毛边、毛刺，或者铸造制品、刃物表面的喷沙打磨等。铝粒可使您的金属产品平整、光洁、发亮、达到增白的效果。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。在LED半导体、蒸渡使用的比较多，对纯度要求也比较高。
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.