1、純度越高，耐蝕性越好，眾所周知，純鋁在空氣之中與氧氣發作效果，在鋁的表面會生產一層很薄的致密自然氧化膜，比其它金屬氧化膜生成的快并且厚的多，從而阻止了空氣中有害氣體和水分的腐蝕，起到了維護效果.
1. The higher the purity, the better the corrosion resistance. It is well known that pure aluminium in the air and oxygen attack effect, on the surface of aluminium will produce a very thin layer of dense natural oxide film, faster and thicker than other metal oxide film, thus preventing harmful gas and water corrosion in the air, playing a maintenance effect.
2、純鋁的耐蝕性雖好，但機械強度差，這在必定程度上制約了鋁的使用，因而，人們在鋁中加入適量的鎂、銅、鋅等其他金屬，制成各種類型的鋁合金。
2. The corrosion resistance of pure aluminium is good, but its mechanical strength is poor, which restricts the use of aluminium to a certain extent. Therefore, people add appropriate amounts of magnesium, copper, zinc and other metals into aluminium to make various types of aluminium alloys.

鋁合金的機械強度高，使鋁的機械強度大大提高，使用規模大大擴大，鋁合金雖機械強度高，但耐蝕性比純鋁差，因而就有或許因氧化而受腐蝕。
Aluminum alloy has high mechanical strength, which greatly improves its mechanical strength and enlarges its use. Aluminum alloy has high mechanical strength, but its corrosion resistance is worse than pure aluminum, so it may be corroded by oxidation.
這就需求進行粉末涂裝對鋁合金型材加以維護，鋁合金以其比重小、易加工，機械強度大等特點多年來廣泛使用于修建物的門窗、幕墻等產品上。，
This requires the maintenance of aluminium alloy profiles by powder coating. Aluminum alloy has been widely used in doors, windows and curtain walls of buildings for many years because of its small proportion, easy processing and high mechanical strength. ,
通過粉末涂裝，鋁型材具有較高的耐蝕性、顏色多樣化，表面質感好等眾多長處，與不同的修建外墻涂料相照應，以建造出顏色斑斕的修建。
Through powder coating, aluminium profiles have many advantages, such as high corrosion resistance, diversified colors, good surface texture and so on. It corresponds to different exterior wall coatings to build colorful construction.