Cerium-containing leadless free-cutting zinc-copper-nickel alloy material and preparation method thereof

An alloy material and easy-cutting technology, which is applied in the field of cerium-containing lead-free free-cutting zinc-nickel-nickel alloy material and its preparation, can solve the problems of difficult construction, poor high-temperature fatigue, and low high-temperature strength, so as to improve cutting performance and electrical conductivity. Good cold and hot processing formability and uniform alloy quality

Active Publication Date: 2014-09-10
GUANGXI SHENGLONG METALLURGICAL CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, there are still some problems in the existing copper alloys in my country, such as the alloy contains a large number of impurity elements, poor high temperature fatigue, low high temperature strength; low hardness, poor wear resistance, large friction coefficient, short service life; poor conductivity, waste of electric energy; bending Poor processing performance, easy to break; heavy quality, difficult construction; can not meet market requirements

Method used

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Embodiment Construction

[0013] A cerium-containing lead-free free-cutting zinc white copper alloy material, which contains chemical element components and mass percentages: zinc 40-42, nickel 9-11, cobalt 0.5-0.8, boron 0.15-0.18, manganese 0.05- 0.08, cerium 0.03-0.05, As0.05-0.08, Hf0.08-0.1, the balance is copper.

[0014] The production method of described cerium-containing lead-free free-cutting zinc-nickel-nickel alloy material is as follows:

[0015] (1) Prepare pure copper and scrap copper as the source of copper matrix in a ratio of 1:0.4, add pure copper into the furnace to melt, remove impurities, deoxidize, refine with a refining agent, add alloy components for alloying, and then add Scrap copper melting, adding refining agent for secondary refining, testing and adjusting the content of chemical elements to pass, casting, post-casting heat treatment, etc.;

[0016] (2) The order of batches of alloying elements added to the furnace during the alloying process is: (1) Zinc, As; (2) Nickel,...

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PUM

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Abstract

A cerium-containing leadless free-cutting zinc-copper-nickel alloy material comprises the chemical elements in percent by mass: 40-42% of Zn, 9-11% of Ni, 0.5-0.8% of Co, 0.15-0.18% of B, 0.05-0.08% of Mn, 0.03-0.05% of Ce, 0.05-0.08% of As, 0.08-0.1% of Hf, and the balance Cu. The zinc-copper-nickel alloy possesses the characteristics of excellent corrosion resistance and cold/hot processing formability originally owned by zinc-copper-nickel alloy; by adding B, Ce, Hf and other elements, the copper alloy is improved in cutting performance and electric conductivity, and the lead pollution problem is solved; and by reasonably controlling the processing temperature after casting and taking waste copper as a raw material, the hardness of the core part and the hardness of the surface are basically consistent, and the alloy quality is uniform. An employed refining agent is used for casting production, is capable of reducing the porosity degree of a casting by 1-2 degree and enabling the oxide inclusions to be around second grade, and helps to obviously improve the yield.

Description

technical field [0001] The invention relates to the field of manufacturing metal alloy materials, in particular to a cerium-containing lead-free free-cutting zinc white copper alloy material and a preparation method thereof. Background technique [0002] Copper is widely used because of its good electrical conductivity, plasticity and corrosion resistance. Adding elements such as aluminum, nickel, manganese, tin, silicon, and lead to copper alloy can improve the performance of copper and be used in different places. At present, there are still some problems in the existing copper alloys in my country, such as the alloy contains a large number of impurity elements, poor high temperature fatigue, low high temperature strength; low hardness, poor wear resistance, large friction coefficient, short service life; poor conductivity, waste of electric energy; bending The processing performance is poor and it is easy to break; the quality is heavy and the construction is difficult; i...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C9/04C22C1/06C22F1/08
Inventor 陈大军
Owner GUANGXI SHENGLONG METALLURGICAL CO LTD
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