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Flux-cored wire for nickel base alloy

A technology of flux-cored welding wire and nickel-based alloys, which is applied to welding media, welding equipment, metal processing equipment, etc., and can solve problems such as welding process deviation and poor stability of weld performance indicators

Active Publication Date: 2016-06-08
BEIJING JINWEI WELDING MATERIAL +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0010] However, it has been found that the existing products mainly use nickel-based electrodes and nickel-based solid wires for welding nickel-based alloys such as nickel-chromium-molybdenum, which have disadvantages such as deviations in welding processability and poor stability of weld performance indicators.

Method used

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  • Flux-cored wire for nickel base alloy

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0069] Embodiment 1: Preparation of flux-cored welding wire of the present invention

[0070] The core powder is filled in the nickel-based alloy steel strip with a filling rate of 18%, and the mass percentage of the contained core powder is as follows: 10% metal chromium powder, 35% metal nickel powder, 1.5% metal manganese powder, 17% rutile, 2% ferrosilicon, 1% ferrotitanium, 6% feldspar, 5% quartz, 2% rare earth fluoride, 1% cryolite, 7% ferroniobium metal powder, 7% % metal ferromolybdenum powder, 3% calcium fluoride, and the rest is iron powder. After rolling, the flux-cored wire is welded with various shielding gases (100% CO2 gas, 80% Ar+20% CO2 mixed gas, and 100% Ar gas have the same welding effect, and the following others The embodiments are all the same), the chemical composition of the deposited metal after the welding of the welding wire is (main components, in parts by weight, which may also include traces of unavoidable impurities; the following embodiments...

Embodiment 2

[0072] Embodiment 2: Preparation of the flux-cored welding wire of the present invention

[0073] The drug core powder is filled in the nickel-based alloy steel strip with a filling rate of 20%, and the composition of the contained drug core mass percentage is as follows: 9% metal chromium powder, 36% metal nickel powder, 1% metal manganese powder, 17% rutile, 1% ferrosilicon, 0.5% ferrotitanium, 3% feldspar, 3% quartz, 1% rare earth fluoride, 2% cryolite, 5% ferroniobium metal powder, 6 % metal ferromolybdenum powder, 2% calcium fluoride, and the rest is iron powder. After rolling, the flux-cored wire is welded with a variety of shielding gases. The chemical composition of the deposited metal after welding is: C: 0.049, Si: 0.36, Mn: 0.27, P: 0.005, S: 0.008, Ni: 63.44, Cr: 20.34, Nb: 3.35, Mo: 8.29, Cu: 0.009, Fe: 2.85, Ti: 0.094, Co: 0.009, the weld formed by it is beautiful in appearance, and the properties of the weld metal are excellent; Seam metal has strong high te...

Embodiment 3

[0074] Embodiment 3: Preparation of flux-cored welding wire of the present invention

[0075] The drug core powder is filled in the nickel-based alloy steel strip with a filling rate of 19%, and the mass percentage of the contained drug core is as follows: 11% metal chromium powder, 34% metal nickel powder, 2.5% metal manganese powder, 16% rutile, 3% ferrosilicon, 2% ferrotitanium, 4% feldspar, 4% quartz, 1.5% rare earth fluoride, 3% cryolite, 6% ferroniobium metal powder, 8 % metal ferromolybdenum powder, 1% calcium fluoride, and the rest is iron powder. After rolling, the flux-cored wire is welded with a variety of shielding gases. The chemical composition of the deposited metal after welding is: C: 0.047, Si: 0.42, Mn: 0.30, P: 0.006, S: 0.009, Ni: 63.23, Cr: 20.94, Nb: 3.38, Mo: 8.49, Cu: 0.006, Fe: 2.87, Ti: 0.085, Co: 0.006, the weld formed by it is beautiful in appearance, and the properties of the weld metal are excellent; Seam metal has strong high temperature res...

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Abstract

The invention relates to a flux-cored wire for nickel base alloy. The flux-cored wire comprises a nickel base alloy steel band and flux core powder, wherein the inside of the nickel base alloy steel band is filled and packaged with the flux core powder in a filling rate of 18%-22%; and the flux core powder comprises the following components in percentage by weight: 9%-13% of metal chromium powder, 33%-36% of metal nickel powder, 1%-2.5% of metal manganese powder, 16%-20% of rutile, 1%-3% of ferrosilicon, 0.5%-2% of ferrotitanium, 3%-6% of feldspar, 3%-5% of quartz, 1%-2.5% of rare earth fluoride, 1%-3% of cryolite, 5%-7% of ferrocolumbium, 6%-8% of ferromolybdenum, 1%-3% of calcium fluoride and the balance of iron powder. The flux-cored wire has excellent performance.

Description

technical field [0001] The invention belongs to the field of welding materials, in particular to a flux-cored welding wire suitable for nickel-chromium-molybdenum series nickel-based alloys. Background technique [0002] With the development of modern industry, the requirements for materials are getting higher and higher. In order to meet various harsh conditions of use, the research and development of various new materials have received great attention, and the corresponding welding materials have also received corresponding attention. The product structure and varieties of welding materials have undergone great changes due to the development of the country, and new high-efficiency welding materials have made great progress and have been widely used. Among them, the most widely used new special welding materials are stainless steel welding materials and nickel-based alloys. Welding materials. [0003] The general recognition of the excellent properties of nickel-based corr...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B23K35/30B23K35/368
CPCB23K35/0266B23K35/304B23K35/3608B23K35/368
Inventor 李伟崔晓东董海青王士山王磊陈波王井勇李柱高志深
Owner BEIJING JINWEI WELDING MATERIAL
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