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Production method for impact-resisting chromium-nickel alloy

A chromium-nickel alloy and impact resistance technology, applied in the production field of chromium-nickel alloys, can solve the problems of difficult to achieve decarburization and chromium retention, poor impact resistance of chromium-nickel alloys, etc., and achieve high strength, good impact resistance, and increased energy. consumption effect

Inactive Publication Date: 2018-02-09
宝鸡市铭坤有色金属有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] The purpose of the present invention is to provide a production method of impact-resistant chromium-nickel alloys, which solves the problems that existing methods for producing chromium-nickel alloys are difficult to achieve decarburization and chromium preservation and the produced chromium-nickel alloys have poor impact resistance

Method used

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  • Production method for impact-resisting chromium-nickel alloy

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Embodiment 1

[0021] A production method of an impact-resistant chromium-nickel alloy comprises the following steps: (1) adjusting the temperature of a smelting furnace to be 1000° C.; (2) adding 10% Ni, 4% Pt, and chromium-containing 55% molten iron; (3) smelting at 1000°C for 5 hours; (4) decarburization and temperature rise by blowing oxygen from the furnace wall with an oxygen lance, and the flow rate of the oxygen lance used is 1000Nm 3 / h, the oxygen pressure is 0.9Mpa. Install carbon injection equipment on the furnace wall, the amount of carbon injection is 60kg / min, make the temperature in the furnace reach 2000°C, add 1% of Rb and 30% of chromium, and smelt for 2h; (5) according to the rate of 50°C / s The smelted alloy material is cooled to room temperature to obtain chromium-nickel alloy.

Embodiment 2

[0023] A production method of an impact-resistant chromium-nickel alloy comprises the following steps: (1) adjusting the melting furnace temperature to be 1200° C.; (2) adding 15% Ni, 4.5% Pt, chromium-containing 45% molten iron; (3) Melting at 1200°C for 5 hours; (4) Decarburization and temperature rise by blowing oxygen from the furnace wall with an oxygen lance with a flow rate of 2000Nm 3 / h, the oxygen pressure is 0.85Mpa. Install carbon injection equipment on the furnace wall, the amount of carbon injection is 10kg / min, make the temperature in the furnace reach 2000°C, add 0.5% Rb and 35% chromium, and smelt for 2h; (5) according to the speed of 50°C / s The smelted alloy material is cooled to room temperature to obtain chromium-nickel alloy.

Embodiment 3

[0025] A production method of an impact-resistant chromium-nickel alloy comprises the following steps: (1) adjusting the melting furnace temperature to be 1500° C.; (2) adding 15% Ni, 4.5% Pt, chromium-containing 45% molten iron; (3) Melting at 1500°C for 5 hours; (4) Decarburization and temperature rise by blowing oxygen from the furnace wall with an oxygen lance with a flow rate of 5000Nm 3 / h, the oxygen pressure is 0.8Mpa. Install carbon injection equipment on the furnace wall, the amount of carbon injection is 70kg / min, make the temperature in the furnace reach 2000°C, add 0.5% Rb and 35% chromium, and smelt for 2h; (5) according to the speed of 50°C / s The smelted alloy material is cooled to room temperature to obtain chromium-nickel alloy.

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Abstract

The invention discloses a production method for impact-resisting chromium-nickel alloy. The production method for the impact-resisting chromium-nickel alloy includes the steps of firstly, adjusting the temperature of a smelting furnace to 1000-1500 DEG C; secondly, pouring a certain amount of Ni, Pt and chromium-containing molten iron into the smelting furnace; thirdly, carrying out smelting for 5h at the temperature of 1000-1500 DEG C; fourthly, carrying out decarburization and temperature increasing in the way of blowing oxygen to the furnace wall through an oxygen lance, installing carbonspraying equipment on the furnace wall, controlling a certain carbon spraying quantity to make the temperature in the furnace reach 2000 DEG C, meanwhile, adding a certain amount of Rb and chromium, and carrying out smelting for 2 h; and fifthly, cooling the smelted alloy materials to the room temperature according to a certain speed so as to obtain the chromium-nickel alloy. The chromium-nickel alloy obtained through the production method for the impact-resisting chromium-nickel alloy has good impact toughness and high strength, and the problems that in the existing preparation process of chromium-nickel alloy, decarburization and chromium conservation are difficult to realize, resources are wasted, and energy consumption is increased are solved.

Description

technical field [0001] The invention belongs to the technical field of metallurgy and relates to a production method of an impact-resistant chromium-nickel alloy. Background technique [0002] Chromium alloy has high strength and corrosion resistance, and its alloy with iron and nickel is commonly known as stainless steel. Stainless steel products are widely used in life. Chrome-nickel alloy is a derivative product of chromium-iron alloy and nickel-iron alloy, which is an intermediate product of stainless steel smelting. At present, stainless steel smelting generally adopts an electric furnace as a primary smelting furnace, and uses scrap steel, stainless steel return material, ferrochrome and nickel-iron alloy and molten iron as raw materials. After being smelted in an electric furnace or a converter, it is refined to produce qualified stainless steel products. [0003] However, the chromium-nickel alloy prepared by the usual method of smelting chromium-nickel alloy is n...

Claims

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Application Information

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IPC IPC(8): C22C1/02C22C27/06C22C33/04C22C38/40
CPCC22C1/02C22C27/06C22C33/04C22C38/002C22C38/40
Inventor 沈小利牛会梅
Owner 宝鸡市铭坤有色金属有限公司
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