Copper zinc silicon base powdery brazing material containing alterant and preparation method thereof

A modificator, silicon-based technology, applied in the field of powder metallurgy, can solve problems such as improper smelting atomization process, unstable powder quality, poor composition design, etc. The effect of crystallization

Active Publication Date: 2019-05-03
ZHENGZHOU RES INST OF MECHANICAL ENG CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

During the preparation and application of copper-zinc-silicon alloy powder, problems such as unstable powder quality an

Method used

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  • Copper zinc silicon base powdery brazing material containing alterant and preparation method thereof
  • Copper zinc silicon base powdery brazing material containing alterant and preparation method thereof
  • Copper zinc silicon base powdery brazing material containing alterant and preparation method thereof

Examples

Experimental program
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Example Embodiment

[0045] Example 1

[0046] The chemical composition of copper-zinc-silicon-based powder brazing material containing trace modifier is designed as: zinc 30 wt %, silicon 4 wt %, tin 1 wt %, Indium 0.5 wt %, lanthanum cerium composite metal 1 wt %, nickel 0.2 wt %, manganese 0.8 wt %, iron 1 wt %, the balance of copper and inevitable impurity elements.

[0047] Taking the preparation of 100 parts of copper-zinc-silicon-based powder brazing material as an example, firstly, 9 parts of copper and 1 part of silicon are mixed and smelted into copper-silicon master alloy, and 7 parts of copper and 3 parts of nickel are mixed and smelted into copper-nickel master alloy. ; Roll the iron sheet into a foil strip with a thickness of 0.2 mm and a width of 5 mm, and roll 0.5 parts of metal indium and 1 part of lanthanum-cerium composite metal into the foil strip and compact it. Then, the remaining copper, copper-silicon master alloy, and copper-nickel master alloy were melted and s...

Example Embodiment

[0051] Example 2

[0052] The chemical composition of copper-zinc-silicon-based powder brazing material containing trace modifier is designed as: zinc 28 wt %, silicon 5 wt %, tin 2 wt %, Indium 0.8 wt %, lanthanum cerium composite metal 1 wt %, nickel 1 wt %, manganese 1 wt %, iron 1 wt %, the balance of copper and inevitable impurity elements.

[0053] Taking the preparation of 100 parts of silicon brass pre-alloy powder as an example, firstly, 9 parts of copper and 1 part of silicon are mixed and smelted into a copper-silicon master alloy, 7 parts of copper and 3 parts of nickel are mixed and smelted into a copper-nickel master alloy; The sheet was rolled into a foil strip with a thickness of 0.2 mm and a width of 5 mm, and 0.8 parts of metal indium and 1 part of lanthanum-cerium composite metal were rolled into the foil strip and compacted. Then, the remaining copper, copper-silicon master alloy and copper-nickel master alloy were melted and smelted in an intermed...

Example Embodiment

[0057] Example 3

[0058] The chemical composition of copper-zinc-silicon-based powder brazing material containing trace modifier is designed as: zinc 30 wt %, silicon 6 wt %, tin 1 wt %, Indium 2 wt %, lanthanum cerium composite metal 0.5 wt %, nickel 1 wt %, manganese 1 wt %, iron 1 wt %, the balance of copper and inevitable impurity elements.

[0059] Taking the preparation of 100 parts of silicon brass pre-alloy powder as an example, firstly, 9 parts of copper and 1 part of silicon are mixed and smelted into a copper-silicon master alloy, 7 parts of copper and 3 parts of nickel are mixed and smelted into a copper-nickel master alloy; The sheet is rolled into a foil strip with a thickness of 0.2 mm and a width of 5 mm, and 2 parts of metal indium and 0.5 part of lanthanum-cerium composite metal are rolled into the foil strip and compacted. Then, the remaining copper, copper-silicon master alloy and copper-nickel master alloy were melted and smelted in an intermediat...

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Abstract

The invention provides a copper zinc silicon base powdery brazing material containing alterant. The material comprises 28-35 wt% of zinc, 4-6 wt% of silicon, 1-3 wt% of tin, 0.2-2 wt% of alterant, 0.2-2 wt% of nickel, 0.8-2 wt% of manganese, 0.5-2 wt% of iron, and the balance of copper. The alterant can adopt metal indium or lanthanum cerium composite metal or mixtures of the metal indium and thelanthanum cerium composite metal. A preparation method comprises the following steps: (1) copper and silicon are smelted as intermediate alloys; and copper and nickel are smelted as intermediate alloys; (2) iron is rolled as foil strips; and the alterant is rolled for pressing; (3) the remained copper, copper silicon intermediate alloys and copper nickel intermediate alloys are molten; (4) zinc, tin, manganese and the iron strips with the alterant are fed in a furnace in sequence for mixing; and (5) the powdery brazing material is prepared through gas atomization or water atomization. The material can be used for free-cutting and corrosion-resistance copper base powder metallurgy products or alloy powder for improving the sharpness of diamond tools.

Description

technical field [0001] The invention belongs to the field of powder metallurgy, in particular to a copper-zinc-silicon-based powdery brazing material containing a modifier and a preparation method thereof. Background technique [0002] Powder metallurgy technology is an industrial technology that uses metal powder or alloy powder as raw material, after forming and sintering, to prepare metal materials, composite materials and various types of products. It is widely used in transportation, machinery, electronics, aerospace, new energy, super Hard tools and other fields. As the raw material of powder metallurgy, metal powder or alloy powder is the foundation and cornerstone of powder metallurgy industrial products. Only proper composition and suitable molding process can produce qualified powder that meets the requirements. [0003] Due to its excellent strength, toughness and wear resistance, copper-based alloy powder is widely used in the research and preparation of high-st...

Claims

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Application Information

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IPC IPC(8): C22C9/04C22C1/03B22F9/08B22F1/00
Inventor 于奇钟素娟马佳吴铭方宋克兴刘建秀李和鑫
Owner ZHENGZHOU RES INST OF MECHANICAL ENG CO LTD
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