Unlock instant, AI-driven research and patent intelligence for your innovation.

Preparation method of CuCr25Me alloy cast blank

A casting billet and alloy technology is applied in the field of preparation of CuCr25Me alloy billet, which can solve the problems of reduced contact current breaking capacity, high oxygen and nitrogen content, and low structure uniformity, and achieves improved electrical withstand voltage and breaking performance. , the effect of strengthening the chromium phase and improving the performance

Inactive Publication Date: 2013-04-17
UNIV OF SHANGHAI FOR SCI & TECH
View PDF0 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The powder metallurgy method is relatively simple, and the alloy composition is easy to control, but the size and spacing between the chromium particles are too large, the uniformity of the structure is low, and the content of oxygen and nitrogen in the contact material prepared by this method is too high, which reduces the contact strength. Current breaking capacity

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] A CuCr25Se alloy billet material, wherein the amount of each element contained is calculated by weight percentage, and its composition is as follows:

[0027] Chromium 25%

[0028] Se 0.5%

[0029] Copper 74.5%.

[0030] The preparation method of above-mentioned a kind of CuCr25Se alloy billet material specifically comprises following process step:

[0031] (1), first all Se and copper are smelted into an intermediate alloy, that is, Me and copper are smelted into an intermediate alloy;

[0032] In the smelting of copper and Se into an intermediate alloy, the ratio of copper and Se used is calculated by weight percentage, that is, copper: Se is 1:1;

[0033] (2) Add chromium, the remaining copper and the intermediate alloy obtained by smelting Se and copper obtained in step (1) into a vacuum induction furnace, and then vacuumize the vacuum induction furnace to achieve a vacuum degree in the furnace of less than 1×10 -1 Pa, and heat the temperature in the furnace to ...

Embodiment 2

[0041] A CuCr25Se alloy billet material, wherein the amount of each element contained is calculated by weight percentage, and its composition is as follows:

[0042] Chromium 25%

[0043] Se 2%

[0044] Copper 73%.

[0045] The preparation method of above-mentioned a kind of CuCr25Se alloy billet material specifically comprises following process step:

[0046] (1), first all Se and copper are smelted into an intermediate alloy, that is, Me and copper are smelted into an intermediate alloy;

[0047] In the smelting of copper and Se into an intermediate alloy, the ratio of copper and Se used is calculated by weight percentage, that is, copper: Se is 1:1;

[0048] (2) Add chromium, the remaining copper and the intermediate alloy obtained by smelting Se and copper obtained in step (1) into a vacuum induction furnace, and then vacuumize the vacuum induction furnace to achieve a vacuum degree in the furnace of less than 1×10 -1 Pa, and heat the temperature in the furnace to 1600...

Embodiment 3

[0054] A CuCr25Se alloy billet material, wherein the amount of each element contained is calculated by weight percentage, and its composition is as follows:

[0055] Chromium 25%

[0056] Se 2%

[0057] Copper 73%.

[0058] The preparation method of above-mentioned a kind of CuCr25Se alloy billet material specifically comprises following process step:

[0059] (1), first all Se and copper are smelted into an intermediate alloy, that is, Me and copper are smelted into an intermediate alloy;

[0060] In the smelting of copper and Se into an intermediate alloy, the ratio of copper and Se used is calculated by weight percentage, that is, copper: Se is 2:3;

[0061] (2) Add chromium, the remaining copper and the intermediate alloy obtained by smelting Se and copper obtained in step (1) into a vacuum induction furnace, and then vacuumize the vacuum induction furnace to achieve a vacuum degree in the furnace of less than 1×10 -1 Pa, and heat the temperature in the furnace to 1700...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention relates to a preparation method of a CuCr25Me alloy cast blank, and the preparation method comprises the following steps: firstly smelting total Me and Cu in a certain ratio into an intermediate alloy, then melting the intermediate alloy obtained by smelting Me and Cu, Cr and the balance of Cu in a vacuum induction furnace to obtain an alloy liquid phase, then introducing argon gas,maintaining the pressure, stirring, refining, and finally casting in a water cooling mold to form a cast blank, namely CuCr25Me alloy cast blank. The CuCr25Me alloy cast blank contains the elements in percentage by weight: 25% of Cr, 0.5-2% of Me and 73-74.5% of Cu. The finally obtained CuCr25Me alloy cast blank material has electrical conductivity being up to 30 Ms / m, the oxygen and nitrogen contents are separately controlled at below 300 and 500 ppm, and the size of the Cr particles in the alloy is 6-15 mu m; and the CuCr25Me alloy cast blank has the advantages of compact structure, fine and uniform grains, low gas content and high electrical conductivity.

Description

Technical field [0001] The invention involves a casting method of a alloy material, especially a preparation method for CUCR25ME alloy casting. Background technique [0002] Difficult mixed -soluble alloys are a type of alloy with liquid -phase separation characteristics. There are more than 500 types of difficulty -soluble alloys.Because the density difference between the two phases in this type of alloy is usually large, severe gravity bias often causes the development and application of this type of alloy in the preparation process.If a few are distributed by appropriate methods, the special physical properties and mechanical properties of many difficulty mixed solutions will make it have a good application prospect.Copper chromium alloys (such as CUCR25) are a typical representative of difficulty mixing alloys.Because copper chromium alloy has the advantages of high strength and hardness, good thermal conductivity and electrical conductivity, and strong corrosion resistance, ...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Patents(China)
IPC IPC(8): C22C9/00C22C1/03B22D27/04
Inventor 刘新宽刘平陈小红马凤仓李伟何代华
Owner UNIV OF SHANGHAI FOR SCI & TECH