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Lead-free free-cutting high-strength high-plasticity high-conductivity tellurium-silver-chromium bronze material

A high-conductivity, easy-to-cut technology, applied in the field of tellurium-silver-chromium bronze materials, can solve the problems of poor cutting performance, material oxidation resistance and high temperature softening resistance, etc., to achieve increased yield, excellent cutting performance, high resistance The effect of oxidative capacity

Inactive Publication Date: 2018-02-23
NINGBO XINGAODA ADVANCED METALLIC MATERIALS
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  • Abstract
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Problems solved by technology

Although copper has excellent electrical conductivity, its cutting performance is extremely poor, and the material's oxidation resistance and high temperature softening resistance are poor.

Method used

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  • Lead-free free-cutting high-strength high-plasticity high-conductivity tellurium-silver-chromium bronze material
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  • Lead-free free-cutting high-strength high-plasticity high-conductivity tellurium-silver-chromium bronze material

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Embodiment Construction

[0033] Below in conjunction with embodiment the present invention is described in further detail, but the present invention is not limited only to embodiment:

[0034] The preparation method of the alloy material sample in the embodiment of the present invention is a conventional method in the industry, and the general process is: batching → smelting in a power frequency induction furnace (alloying treatment, charcoal covering protection) → semi-continuous casting of ingots with a diameter of 163 mm (melting temperature 1150 ° C ~ 1300 ° C , degassing during pouring) → 1250 tons of reverse extrusion machine 830 ~ 860 ° C extrusion → φ28 → φ23 → φ18 → φ15, the finished product is straightened and polished by a two-roller straightening machine, and the Te used in the batching process is pure tellurium Material, Ag is pure silver material. In addition, the chromium and phosphorus used in the batching process are added in the form of Cu-Cr and Cu-P master alloys, and the final con...

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Abstract

The invention discloses a lead-free free-cutting high-strength high-plasticity high-conductivity tellurium-silver-chromium bronze material. The material is characterized by being composed of, by weight, 0.02%-0.2% of Ag, 0.08%-0. 5% of Te, 0.1%-1.5% of Cr, 0.002%-0.015% of P, less than 0.01% of Pb, and the balance copper and unavoidable impurities. The most appropriate added content of copper, tellurium, chromium and copper-phosphorus alloy in the alloy material are adjusted to obtain an accumulation effect so that the alloy material can have excellent cutting performance and high conductivity; and compared with existing chromium-zirconium copper, tellurium copper and red copper, the tellurium-silver-chromium bronze material has higher strength, higher plasticity, higher conductivity, andhigher machining efficiency, and meanwhile, the material has high oxidation resistance and softening resistance at high temperature.

Description

Technical field: [0001] The invention relates to a tellurium-silver-chrome bronze material with high strength (419-455MPa), high plasticity (5-12%) and high electrical conductivity (IACS%-93-97%) which is lead-free and easy to cut. Background technique: [0002] In the field of cutting, plasma cutting, especially fine plasma cutting, has been applied in many industrial fields. However, with the development of laser technology such as optical fiber, laser cutting machines have also begun to be favored by some users in recent years. Plasma cutting machine is a kind of thermal cutting equipment, the main working principle is compressed air as the main body, high temperature and high speed plasma arc as the heat source, the metal to be cut is partially melted, and the melted metal is blown away by high speed airflow at the same time, Create narrow slits. The plasma cutting machine can cut various metal materials such as stainless steel, iron, aluminum, copper, etc., and the cut...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C9/00C22C1/03
CPCC22C1/03C22C9/00
Inventor 冯斌黄敏章建炜
Owner NINGBO XINGAODA ADVANCED METALLIC MATERIALS
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