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A kind of chromium-nickel alloy powder for flux-cored welding wire, flux-cored welding wire and preparation method thereof

A technology of chromium-nickel alloy and flux-cored welding wire, which is applied in welding equipment, metal processing equipment, manufacturing tools, etc., can solve the problems affecting the welding process level of welding wire, restricting the development of stainless steel flux-cored wire fine-diameter welding wire, and restricting deoxidizers, etc. It achieves the effect of favorable product welding level, uniform and stable chromium and nickel elements, and less spatter

Active Publication Date: 2019-12-24
JIANGSU JIUZHOU NEW MATERIAL TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Due to the need for heat treatment, the use of deoxidizers in the stainless steel welding wire formula is restricted, which affects the improvement of the welding process level of the welding wire, and can not completely solve the problem of thin-diameter welding wire production through heat treatment. The development of diameter welding wire

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] In the present invention, the chromium-nickel alloy powder includes the following components in mass percentage: Cr: 39.7%; Ni: 19.8%; C: 0.011%; Si: 0.21%; Mn: 0.52%; S: 0.008%; P: 0.015%; : 0.010%; Mo: 0.007%; the rest is Fe.

[0024] Wherein, the particle size of the chromium-nickel alloy powder is 100% of the chromium-nickel alloy powder is greater than 50 mesh, and the particle size of less than 15% of the chromium-nickel alloy powder is less than 200 mesh.

[0025] The flux-cored welding wire of the present invention comprises a sheath and a core powder; the core powder is arranged in the sheath; and the core powder comprises the following components in mass percentage: TiO 3 : 26%; SiO 2 : 10%; the above-mentioned chromium-nickel alloy powder: 50%; ZrO 2 : 3%; Al-Mg alloy powder: 3%; Mn metal powder: 8%.

[0026] The preparation method of preparing above-mentioned medicinal welding wire among the present invention; Comprise the following steps:

[0027] A, mi...

Embodiment 2

[0033] In the present invention, the chromium-nickel alloy powder in the present invention comprises the following components in mass percentage: Cr: 37%; Ni: 23%; C: 0.03%; Si: 1%; Mn: 2.5%; S: 0.02%; P: 0.025% ; Cu: 0.5%; Mo: 0.5%; the rest is Fe.

[0034] Wherein, the particle size of the chromium-nickel alloy powder is 100% of the chromium-nickel alloy powder is greater than 50 mesh, and the particle size of less than 15% of the chromium-nickel alloy powder is less than 200 mesh.

[0035] The flux-cored welding wire of the present invention comprises a sheath and a core powder; the core powder is arranged in the sheath; and the core powder comprises the following components in mass percentage: TiO 3 : 30%; SiO 2 : 15%; the above-mentioned chromium-nickel alloy powder: 45%; ZrO 2 : 1%; Al-Mg alloy powder: 5%; Mn metal powder: 4%.

[0036] The preparation method of preparing above-mentioned medicinal welding wire among the present invention; Comprise the following steps: ...

Embodiment 3

[0043] In the present invention, the chromium-nickel alloy powder in the present invention includes the following components in mass percentage: Cr: 45%; Ni: 18%; C: 0.011%; Si: 0.21%; Mn: 0.52%; S: 0.008%; P: 0.015 %; Cu: 0.010%; Mo: 0.007%; the rest is Fe.

[0044] Wherein, the particle size of the chromium-nickel alloy powder is 100% larger than 50 mesh and 100% smaller than 200 mesh.

[0045] The flux-cored welding wire of the present invention comprises a sheath and a core powder; the core powder is arranged in the sheath; and the core powder comprises the following components in mass percentage: TiO 3 : 20%; SiO 2 : 7%; the above chromium-nickel alloy powder: 55%; ZrO 2 : 5%; Al-Mg alloy powder: 5%; Mn metal powder: 8%.

[0046] The preparation method of preparing above-mentioned medicinal welding wire among the present invention; Comprise the following steps:

[0047] A, mix and prepare to form chromium-nickel alloy by mass percentage;

[0048] B. The chromium-nick...

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Abstract

The invention relates to chromium nickel alloy powder for a flux-cored wire, the flux-cored wire and a preparation method of the flux-cored wire. The chromium nickel alloy powder comprises the following components of, by mass, 37-45% of Cr, 18-23% of Ni, 0.03% or less of C, 1.0% or less of the Si, 2.5% or less of Mn, 0.02% or less of S, 0.025% or less of P, 0.5% or less of Cu, 0.5% or less of Mo and the balance Fe. By adding the chromium nickel alloy powder in the flux-cored wire, drawing of a small-diameter welding wire is facilitated, and a large-diameter welding wire does not need to be subjected to heat treatment firstly; and meanwhile, in welding, the flux-cored wire is more even and stable, and splashing is effectively reduced.

Description

technical field [0001] The invention relates to the field of flux-cored welding wires, in particular to a chromium-nickel alloy powder for flux-cored welding wires, a flux-cored welding wire and a preparation method thereof. Background technique [0002] Flux-cored welding wire is also called tubular welding wire. By adjusting the type and proportion of flux-cored additives, it is very convenient to design various welding materials for different purposes. Because its alloy composition can be adjusted conveniently and flexibly, many varieties of flux cored wire cannot be smelted and rolled by solid cored wire. [0003] The core powder of traditional stainless steel flux cored wire is usually completed by adding single element chromium (Cr) and nickel (Ni) metal powder. Due to the addition of chromium and nickel metal elements alone, it is difficult to carry out mass production of thin-diameter welding wires (small diameters usually refer to welding wires with a diameter of &...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B23K35/30B23K35/40
CPCB23K35/3086B23K35/406
Inventor 马永峰
Owner JIANGSU JIUZHOU NEW MATERIAL TECH CO LTD
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