Preparation method of microalloyed high-strength precision nickel-chromium resistance alloy material

A micro-alloying and resistance alloying technology, applied in the field of metal materials, can solve the problems of mechanical properties, resistivity temperature coefficient of resistivity and foil surface quality that cannot meet the requirements of precision machining, achieve good surface quality, reduce impurity elements and gases Good content and processing performance

Inactive Publication Date: 2020-09-04
CHONGQING MATERIALS RES INST
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Problems solved by technology

Due to the limitations of composition control technology, smelting technology and subsequent processing technology, the mechanical properties, resistivity, temperature coefficient of resistance and foil surface The quality and other aspects cannot meet the precision processing requirements

Method used

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  • Preparation method of microalloyed high-strength precision nickel-chromium resistance alloy material
  • Preparation method of microalloyed high-strength precision nickel-chromium resistance alloy material
  • Preparation method of microalloyed high-strength precision nickel-chromium resistance alloy material

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Embodiment Construction

[0034] In the present embodiment, take each component of the microalloyed high-strength precision nickel-chromium resistance alloy material of the present invention according to the proportioning described in Table 1:

[0035] Table 1 chemical composition list (wt%)

[0036]

[0037] 1) Preparation of electrode rod:

[0038] Get each component according to table 1, dry at 200 DEG C for 6 to 8 hours; Ni, Cr, Fe are used as large materials, Si, Mn, Al, Zr, B, rare earth elements are used as small materials, and the rare earth elements are Ce.

[0039] Take the large material and carry out smelting. The smelting is divided into 5 times to raise the temperature. The first three times control the power transmission power to 30kW, 60kW and 100kW respectively, and the holding time is controlled at 5-10 minutes each time; 90 minutes; then control the transmission power to 180kW, keep warm for 60-90 minutes until the large material melts, and ensure that the vacuum degree is <20Pa...

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Abstract

The invention belongs to the field of metal materials, and particularly relates to a microalloyed high-strength precision nickel-chromium resistance alloy material. A preparation method of the microalloyed high-strength precision nickel-chromium resistance alloy material comprises the steps of vacuum induction melting, electroslag remelting, vacuum consumable remelting and forging cogging. The material prepared by the method has high resistivity, low temperature coefficient of resistance, excellent heat resistance, corrosion resistance and mechanical properties, and good processing performance, can meet the processing requirements of high-precision foils and fine wires, improves the processing accuracy and surface quality of finished products, and is used for the production of high-precision electronic components, the products, namely precision resistance alloys, are made by the VIM+ESR+VAR smelting process, due to the precise control over the content of alloy elements, impurities andgas in the products, the electrical properties and the processing performance of the products meet the requirements, and the products can face the high-end precision resistance alloy market at home and abroad.

Description

technical field [0001] The invention belongs to the field of metal materials, in particular to a method for preparing a micro-alloyed high-strength precision nickel-chromium resistance alloy material. Background technique [0002] Resistance electric heating alloy materials are a large series of products of electronic and electrical functional materials, among which nickel-based alloys (Ni-Cr, Ni-Cr-Fe, Ni-Cr-Cu series) and iron-based alloys are the most used and the most widely involved. (Fe-Ni, Fe-Cr-Al series). Resistance electric heating alloy materials are used to make precision resistance elements and electric heating elements in the form of wire, strip, pipe, and profile, and are widely used in household appliances, aerospace, ships, military and other industries. With the advancement of science and technology, high-tech electronic products have higher and higher requirements on the performance of resistance alloys. Resistance alloy materials need to have excellent ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C19/05C22C1/02C22B9/18C22F1/10C22B9/16
CPCC22B9/16C22B9/18C22C1/023C22C19/058C22F1/10Y02P10/25
Inventor 黄国平马丁刘海定何曲波曾羽杨贤军
Owner CHONGQING MATERIALS RES INST
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