Nickel-free white copper alloy containing rare earth additional elements and method for manufacturing plates made of same

Abstract

The invention discloses nickel-free white copper alloy containing rare earth additional elements and a method for processing plates made of the same. The nickel-free white copper alloy comprises the following components in percentage by weight: 0.02 to 0.1 percent of rare earth elements, 5 to 20 percent of zinc, 8 to 18 percent of manganese, 0.5 to 2.0 percent aluminum, 0 to 0.5 percent of iron, 0 to 0.5 percent of titanium, 0 to 0.1 percent of zirconium and the balance of copper. An alloy processing method comprises the following major technological processes of: alloy smelting and casting, hot rolling, thermal annealing, cold rolling and the like. The method is characterized in that: copper, zinc, manganese and aluminum are taken as main alloy elements; rare earth elements such as lanthanum, cerium and iridium as well as trace elements such as iron, zirconium and titanium are added in an alloy smelting process; and a human-friendly and environmental-friendly nickel-free white copper alloy plate is manufactured by the technological methods of high-temperature alloying, degassing, impurity removing, casting, cast ingot hot rolling, thermal annealing, cold rolling, finished product annealing and the like.

Description

technical field

[0001] The invention relates to a copper-based nickel-free white copper alloy (Cu-Zn-Mn-Al-Re) containing rare earth elements and a plate processing method thereof. Background technique

[0002] Cupronickel refers to a copper alloy with nickel as the main alloying element. Cupronickel is divided into ordinary cupronickel, iron cupronickel, manganese cupronickel, zinc cupronickel and aluminum cupronickel. Cupronickel not only has a silver-white appearance, but also has excellent corrosion resistance, high strength and plasticity, and good processing performance. It is widely used to manufacture eye frames, zippers, buttons, watch straps, and some decorative crafts.

[0003] In addition to the silvery white color of white copper, white manganese brass is also called White Tombasil, which is also a white copper alloy. The American standard is C99700. It is mainly used for building components, architectural decoration accessories, ship components, etc. Another a...

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