The door lock is made of zinc alloy, and its hardness and anti rust ability are very poor. Even thick electroplating is also simple to fade, blacken, rot and blister, but its advantage is that it is easy to make messy picture parts, especially pressure casting.
Steel has good strength and low cost, but it is easy to rust. It is usually used as the internal structure data of locks. Magnesium alloy die-casting machine accessories are not suitable for external decoration.
Aluminum or aluminum alloy. Generally, aluminum alloy (used for Aerospace) is soft and light, with low material strength. Die casting machine parts are easy to process and form.
Copper is one of the widely used lock materials. It has good mechanical function, good corrosion resistance and processing function, and beautiful color. Especially the handle and other lock decoration parts made of copper have flat appearance, good density, no pores and sand holes. It is strong and rust proof. It can be used to deal with various appearances such as plating real gold or placer gold. It looks resplendent, noble and generous, adding a lot of color to everyone's home.
From the perspective of classics, the material should be stainless steel, especially for appearance data. The more you use it, the brighter it will be. It has good strength, strong corrosion resistance and unchanged color. However, there are many kinds of stainless steel, mainly including ferrite and austenite. Ferritic stainless steel is magnetic, commonly known as stainless iron. It will rust for a long time and poor environment. At present, 304 stainless steel is the suitable semi-solid accessory material for die casting machine.
