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Anti-dezincification corrosion-resistant DR brass and preparation method thereof

A corrosion-resistant and anti-dezincification technology, applied in the field of metal products, can solve the problems of surface polishing of sanitary products with pitting, insufficient strength and hardness, insufficient wear resistance, etc., and achieves remarkable wear and corrosion resistance and mechanical properties. The effect of improving the wear and corrosion resistance and reducing the segregation of the chemical composition of the alloy

Inactive Publication Date: 2014-10-22
HESHAN JINZHOU COPPER IND
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the traditional brass ingot products currently used must use degassing agents, refining agents, charcoal, refiners, etc. in the production process. Traditional products have insufficient strength and hardness, insufficient wear resistance, and poor corrosion resistance. , Surface polishing of bathroom products has problems such as pitting, which restricts its application

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  • Anti-dezincification corrosion-resistant DR brass and preparation method thereof
  • Anti-dezincification corrosion-resistant DR brass and preparation method thereof

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Embodiment Construction

[0020] The present invention is described in further detail below:

[0021] Such as figure 1 As shown, a dezincification and corrosion-resistant DR brass consists of the following components by weight percentage:

[0022] Cu: 58.0%~60%, Al: 0.5%~0.7%, Pb<1.5%, Sn<0.15%, As: 0.08%~0.15%;

[0023] Impurity elements: Fe<0.15%, the balance is Zn; the addition amount of rare earth refiner: 0.15%-0.35%.

[0024] The rare earth refiner refers to a complex of cerium, lanthanum, and yttrium metals.

[0025] A preparation method of anti-dezincification and corrosion-resistant DR brass, comprising the following steps:

[0026] A. Dosing calculation: prepare raw materials Cu, Al, Pb, Sn, As, Fe, Zn and rare earth refiner in proportion;

[0027] B. Melting and refining: add Zn, Al, Pb, Sn, Fe and Cu in the electric furnace, and then raise the temperature until all the raw materials are completely melted; after the above-mentioned Zn, Al, Pb, Sn, Fe and Cu are all melted, Raise the tem...

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Abstract

The invention discloses an anti-dezincification corrosion-resistant DR brass which comprises following components, by weight: 58.0-60% of copper, 0.5-0.7% of aluminum, less than 1.5% of plumbum, less than 0.15% of stannum, 0.08-0.15% of arsenic, less than 0.15% of an impurity element ferrum and the balance zinc. An addition amount of a rare earth refiner is 0.15-0.35%. A preparation method includes following steps: calculation of material proportion, a melting and refining process, a grain refining process, a polishing and dots removing process, an arsenic adding process, a gas removing process, a residue removing process, a high-temperature crystallizing and casting process and a finish product obtaining process. Compared with the prior art, the invention has advantages of achieving an energy-saving effect and being free from polluting environment in production. The anti-dezincification corrosion-resistant DR brass is excellent in performances and can be used as an excellent substituted material of copper alloy.

Description

technical field [0001] The invention relates to metal products, in particular to a dezincification-resistant and corrosion-resistant DR brass and a preparation method thereof. Background technique [0002] Anti-dezincification and anti-corrosion DR brass ingots are non-ferrous alloys based on electrolytic plates, adding a certain amount of Zn and Al, trace elements As and rare earth refiners. Zinc-rich and copper-deficient in China, the use of anti-dezincification and corrosion-resistant DR brass ingots instead of zinc alloys to make wear-resistant and anti-friction sanitary products is its most important application. However, the traditional brass ingot products currently used must use degassing agents, refining agents, charcoal, refiners, etc. in the production process. Traditional products have insufficient strength and hardness, insufficient wear resistance, and poor corrosion resistance. , Surface polishing of bathroom products has problems such as pitting, which restr...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C9/04C22C1/02
Inventor 江清玉
Owner HESHAN JINZHOU COPPER IND