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Electric resistance alloy and its preparing process

A technology of resistance alloy and production process, which is applied in the field of metallurgy, can solve the problems of high Ni content and high production cost, and achieve the effects of reducing Ni content, saving energy and reducing production cost

Inactive Publication Date: 2007-03-28
丹阳市龙鑫合金有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] According to the search by the applicant, the website of Tianjin Youjun Special Steel Materials Co., Ltd.: http: / / www.xhshenyuan.com / chanpin3.htm has announced several high-resistance electrothermal alloys, the main components of which are: Ni: 30.0-61.0 %, Cr: 15.0-31.0%, Si: 0.75-3.0%, C: 0.08%, Mn: 0.6-1.00%, the Ni content is high, and the production cost is also high

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0035] A resistance alloy, the weight percentage of its main components is: Ni: 18.0%, Cr: 26.0%, Si: 2.5%, C: 0.08%, Mn: 2.00%, Al: 0.05%, Re: 0.08%, Fe: balance.

[0036] Its production process is:

[0037] 1. Intermediate frequency melting:

[0038] 1.1 Preparation of raw materials: including charge, slag and deoxidizer, the charge is nickel plate, micro-carbon chromium, pure iron and metal manganese, the slag is calcium fluorite, and the deoxidizer is aluminum lime powder, Reserved after baking;

[0039] 1.2 Charging: Load the spare nickel plate, micro-carbon chromium and pure iron charge after baking in step 1.1 into the intermediate frequency melting furnace, and adjust the fluidity of the slag in time after the charge is melted to make it good;

[0040] 1.3 Refining:

[0041] After the furnace charge is melted, use deoxidizer aluminum lime powder to deoxidize in batches. After adding each batch of deoxidizer, wait for impurities (steel slag) in molten steel to react...

Embodiment 2

[0064] A resistance alloy as in Example 1, the difference is that the weight percentage of each component is: Ni: 19.0%, Cr: 25.0%, Si: 2.0%, C: 0.04%, Mn: 1.00%, Al: 0%, Re: 0.20%, Fe: balance.

[0065] 1. Intermediate frequency melting:

[0066] 1.1 Preparation of raw materials: including charge, slag and deoxidizer, the charge is nickel plate, micro-carbon chromium, pure iron and metal manganese, the slag is calcium fluorite, and the deoxidizer is aluminum lime powder, Reserved after baking;

[0067] 1.2 Charging: Load the spare nickel plate, micro-carbon chromium and pure iron charge after baking in step 1.1 into the intermediate frequency melting furnace, and adjust the fluidity of the slag in time after the charge is melted to make it good;

[0068] 1.3 Refining:

[0069] After the furnace charge is melted, use a deoxidizer (such as aluminum lime powder) to deoxidize in batches. After adding each batch of deoxidizer, wait for the impurities (steel slag) in the molten ...

Embodiment 3

[0092] A resistance alloy as in Example 1, the difference is that the weight percentage of each component is: Ni: 20.0%, Cr: 24.0%, Si: 1.5%, C: 0.01%, Mn: 1.50%, Al: 0.03%, Re: 0.17%, Fe: balance.

[0093] The production process is

[0094] 1. Intermediate frequency melting:

[0095] 1.1 Preparation of raw materials: including charge, slag and deoxidizer, the charge is nickel plate, micro-carbon chromium, pure iron and metal manganese, the slag is calcium fluorite, and the deoxidizer is aluminum lime powder, Reserved after baking;

[0096] 1.2 Charging: Load the spare nickel plate, micro-carbon chromium and pure iron charge after baking in step 1.1 into the intermediate frequency melting furnace, and adjust the fluidity of the slag in time after the charge is melted to make it good;

[0097] 1.3 Refining:

[0098] After the furnace charge is melted, use a deoxidizer (such as aluminum lime powder) to deoxidize in batches. After adding each batch of deoxidizer, wait for the...

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PUM

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Abstract

The invention relates to an electrical resistance alloys that is made up from 18.0-22.0wt% Ni, 24.0-26.0wt% Cr, 1.5-2.5% wt Si, 0.01-0.08wt% C, 1.00-2.00wt% Mn, 0-0.05wt% Al, 0.08-0.20wt% Re, and the rest is Fe. The making technology includes the following steps: middle frequency smelting, electroslag remelting, hammering, hot rolling, annealing heat treatment, acid wasing, polishing and shaving, coiling jointing, cold rolling, stripping and molding. The method could sharply decrease the content of Ni, and adjust the content of the other alloy constituents that could low producing cost and save energy.

Description

technical field [0001] The invention relates to an alloy and a manufacturing process thereof, in particular to a resistance alloy and a manufacturing process thereof, belonging to the technical field of metallurgy. Background technique [0002] The resistance alloy for locomotive braking is the main raw material in the resistance cabinet of electric power and internal combustion locomotive braking system. The resistance alloy is used to effectively guide the electric energy to ensure that the internal environment of the locomotive does not change. Therefore, there are high requirements for the resistivity and resistance uniformity of this alloy. At present, the commonly used brand N40 resistance alloy for locomotive braking in the market, its main composition and content are: Ni: 34.0-37.0%, Cr: 18.0-21.0%, Si: 1.0-3.0%, C≤0.10% , Mn≤1.00%, Al≤0.05%, Fe: surplus, but the price is too high; there is also a 310S stainless steel, its main components are: Ni: 19.0-22.0%, Cr: 2...

Claims

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Application Information

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IPC IPC(8): C22C38/40C22C33/04C21C7/00C21D8/00
Inventor 王国年
Owner 丹阳市龙鑫合金有限公司
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