Brass rod production needs to pay attention to matters

1. The element choosed by the fine grain strengthening of brass bar and aluminum alloy should be common, cheap and no pollution, the element should hold the standard of diversification and small quantity, aluminum alloy raw materials can be developed and used, aluminum alloy should have good processing performance, suitable for the production and processing of all kinds of finished products and semi-finished products.

2. Corrosion resistance, copper based corrosion resistant aluminum alloy arrangement should be single-phase electricity, to prevent the occurrence of second phase in aluminum alloy caused by electrochemical reaction. Therefore, the aluminum alloy element needs to have a large molar concentration of solid mass on the copper bar, and even the element of endless phase dissolution. The single-phase electric brass bar, brass bar and purple copper bar used in engineering projects have good corrosion resistance, which is a crucial raw material for heat exchanger.

3. The solid is a change of polycrystal copper alloy damping performance, such as Cu, Mn series aluminum alloy, hot ductility austenitic changes course under a solid metal with memory performance, such as Cu a zinc, Al, Cu, Al Mn series aluminum alloy.

4. There are soft phase and hard phase in the copper-base wear-resistant aluminum alloy mechanism, so when the fine grain is strengthened, we must ensure that the element added by wechat friends in addition to solid dissolved copper bar, there should also be hard phase precipitation, copper bar aluminum alloy typical hard phase Ni3Si, FeALSi chemical substances. In recent years, the aluminum alloy of automotive synchronizer transmission gear is soft phase, and the negative phase is hard phase. The A phase is not suitable for more than 10%.

5. The color of the copper bar can be changed according to the method of adding wechat friends aluminum alloy factors, such as zinc, aluminum, tin, nickel and other elements, with the transformation of the composition, the color also produces a red, blue, yellow and white transformation, effectively manipulating the composition will get imitation gold raw materials and imitation silver aluminum alloy.