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Nickel-chromium high-resistance electrothermal alloy wire

An electrothermal alloy and high resistance technology, applied in the direction of heating element materials, etc., can solve the problems of processing performance to be improved, and achieve good processing performance and weldability, good surface oxidation resistance, and high temperature level.

Inactive Publication Date: 2018-11-27
丹阳市亚力电热合金有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] The surface oxidation resistance, temperature grade, strength at high temperature, and processing performance of the existing nickel-chromium high-resistance electric heating alloy wire in the prior art need to be improved.

Method used

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  • Nickel-chromium high-resistance electrothermal alloy wire

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Embodiment Construction

[0017] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0018] In describing the present invention, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", " The orientation or positional relationship indicated by "outside", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the referre...

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Abstract

The invention relates to the technical field of nickel-chromium high-resistance electrothermal alloy wires, and particularly relates to a nickel-chromium high-resistance electrothermal alloy wire. Thenickel-chromium high-resistance electrothermal alloy wire is divided into five different alloy wires according to weight percent: Cr20Ni80, Cr30Ni70, Cr15Ni60, Cr25Ni35 and Cr20Ni30, wherein the Cr20Ni80 is prepared from the main chemical components: 20.0-23.0% of Cr, less than or equal to 1.0% of Fe, 0.75-1.60% of Si, less than or equal to 0.50% of Al and the balance of Ni and inevitable impurities; an element maximum service temperature is 1200 DEG C; a melting point is 1400 DEG C; the density is 8.40 cm<3>; the specific resistance at 20 DEG C is 1.09+ / -0.05 mu ohm.m; the ductility is higher than or equal to 20%; specific heat is 0.440 g.DEG C; a heat conductivity coefficient is 60.3 KJ / m.h.DEG C; a linear expansion coefficient is a*10<-6> / DEG C (20 to 1000 DEG C): 18.0; a microscopic structure of the nickel-chromium high-resistance electrothermal alloy wire is austenite and is nonmagnetic. The nickel-chromium high-resistance electrothermal alloy wire has high specific resistance, the surface oxidation resistance is good, a temperature class is high, and the nickel-chromium high-resistance electrothermal alloy wire has high strength at high temperatures.

Description

technical field [0001] The invention relates to the technical field of nickel-chromium high-resistance electrothermal alloy wire processing, in particular to a nickel-chromium high-resistance electrothermal alloy wire. Background technique [0002] High-resistance electrothermal alloy wire mainly has the advantages of good high-temperature oxidation resistance, high mechanical strength and long service life under high-temperature conditions. Temperature and service life, it is widely used in heating elements and general resistance elements of electric heating appliances for daily use, industrial and experimental electric furnaces. [0003] The surface oxidation resistance, temperature grade, strength at high temperature, and processing performance of the existing nickel-chromium high-resistance electric heating alloy wire in the prior art need to be improved. Contents of the invention [0004] The object of the present invention is to solve the shortcomings in the prior a...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H05B3/12C22C19/05C22C38/02C22C38/40C22C30/00
CPCH05B3/12C22C19/05C22C30/00C22C38/02C22C38/34C22C38/40
Inventor 张力
Owner 丹阳市亚力电热合金有限公司
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