Environmentally-friendly fast cutting recasting copper alloy

Abstract

The invention discloses an environmentally-friendly fast cutting recasting copper alloy and relates to the preparation technical field of the metal alloy materials. The copper alloy comprises the following components by weight percent: 57%-62% of Cu, 0.30%-1.0% of Al, 0.10%-0.5% of Fe, 0.01%-0.30% of P, 0.05%-0.20% of Pb, 0.05%-0.5% of Mg, 0.01%-0.06% of B, less than 0.50% of Ni, less than 0.50% of Si, less than 0.70% of Sn and the balance of Zn and inevitable impurities, wherein the total content of the impurities is less than 0.25%. The copper alloy selects aluminum, iron, nickel, silicon and tin elements to replace lead, thus the content of the lead element can be reduced, the damages to the environment and the human body can be reduced and the cost can be lowered; the smelting purity of the gravity cast ingot is good, the liquidity of the casting process is good, the thermal stress cracking resistance is high; the organization density is high, the grains are fine and uniform; and the cutting property is increased, the value of the polishing degree is good, the copper alloy has no welding stress crack and the corrosion resistance is increased.

Description

technical field [0001] The invention relates to the technical field of manufacturing metal alloy materials, in particular to an environment-friendly fast cutting recast copper alloy. Background technique [0002] As people pay more and more attention to the environment, environmental protection has become the focus of world attention. Because heavy metals cannot be biodegraded, they can only undergo mutual transformation between various forms in the environment, so the elimination of heavy metal pollution is often more difficult, and the impact and harm to the human body are also issues that people pay more attention to. Lead, as a heavy metal, has obvious pollution and harm to the environment and human body. After lead enters the human body, it will cause acute or chronic toxic effects on the digestive, nervous, respiratory and immune systems, usually leading to intestinal colic, anemia and muscle paralysis. In severe cases, encephalopathy and even death may occur. And ac...

AI Technical Summary

Problems solved by technology

At the same time, bismuth, as a rare element, has a high price and can cause poisoning, causing great harm to the human body. Therefore, lead-free and bismuth-free copper is the current development trend of copper alloys. It is the material of various countries to find an alternative material. and issues that environmentalists are eager to solve