What material is zinc alloy? Poisonous? Rust? Zinc alloy and stainless steel which good?
Speaking of aluminum alloy, it is estimated that most people have a certain understanding of aluminum alloy, low density, high hardness, good plasticity, is widely used in industry, so we usually see more. In fact, in addition to aluminum alloy, there are other alloys are also of high industrial value, such as zinc alloy, but many people do not know zinc alloy, the following Xiaobian to tell you what material zinc alloy is? Poisonous? Rust? Zinc alloy and stainless steel which good?
What is the material of zinc alloy
What is the material of zinc alloy, zinc alloy is based on the addition of other elements of the alloy. Often added alloying elements are aluminum, copper, magnesium, cadmium, lead, titanium and other low temperature zinc alloy.
Zinc alloy melting point is low, good liquidity, easy to weld, brazing and plastic processing, corrosion resistance in the atmosphere, waste material is easy to recover and remelting; However, the creep strength is low and the size change is easily caused by natural aging. It is prepared by melting, die casting or pressure machining. According to the manufacturing process can be divided into cast zinc alloy and deformation zinc alloy.
The main added elements of zinc alloy are aluminum, copper and magnesium. Zinc alloys can be divided into deformation and casting zinc alloys according to the processing technology. The cast zinc alloy has good fluidity and corrosion resistance. It is suitable for die-casting instrument and automobile parts shell.
Zinc alloy characteristics:
1. Relative importance.
2. Good casting performance, can die casting complex shape, thin wall precision parts, the surface of the casting is smooth.
3. Surface treatment: electroplating, spraying, painting, polishing, grinding, etc.
4. Melting and die casting do not absorb iron, do not corrode pressure, do not stick mold.
5. It has good mechanical properties and wear resistance at room temperature.
6. Low melting point, melting at 385℃, easy to die casting.
Two, zinc alloy poisonous? Rust?
Because do not understand, so will someone hearsay that zinc alloy toxic or will rust and other hazards, so the fact is really so?
First, zinc alloy will not rust.
Zinc alloys only oxidize! Zinc alloy corrosion resistance, high strength, low melting boiling point. For a long time, it is easy to oxidize with oxygen in the air. A layer of dense oxide film is formed on the surface of the alloy to protect the metal inside from being oxidized. Removal of the oxide film to have a reductive substance, can be used acid (such as hydrochloric acid) solution to neutralize the surface oxide film.
Second, zinc alloy is not toxic.
Zinc alloy material has long been used in foreign countries to make high-grade tableware. It's just getting started at home. The hardness of zinc alloy is 65-140, the tensile strength is 260-440; Aluminum alloy hardness 45-90, tensile strength 120-290. Overall, zinc alloy has higher hardness and tensile strength than aluminum alloy. Both aluminum alloy and zinc alloy have good corrosion resistance and can be widely used in tableware.
Three, zinc alloy and stainless steel which is good
Stainless steel has a lot of advantages, good strength, not easy to rust, but as the material that makes ornaments, stainless steel is not as good as zinc alloy, not only the cost is high, processing is more difficult. Zinc alloy has low cost and easy processing, and can be easily made into various shapes through die-casting. At present, most of the small ornaments and key clasps in the domestic market are made of zinc alloy, and then electroplated into a variety of different appearance. They are cheap and good in quality and are very popular with consumers.
After the zinc alloy surface is destroyed, it is easy to break. It is galvanized pipe inside. It is good-looking to do flat Windows.In fact, the key to the advantages of zinc alloy and stainless steel is to first understand the use, and then determine the most suitable alloy material.