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Surfacing flux-cored wire and manufacturing method thereof

A technology of welding wire and welding flux, applied in the field of surfacing flux-cored welding wire and its preparation, can solve the problems of unsatisfactory and uneven surfacing layer, and achieve the effect of saving raw material cost and beautiful welding seam shape

Inactive Publication Date: 2019-09-20
株洲湘江电焊条有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, this kind of surfacing structure is not very uniform in the weld of general flux-cored wire. Although the hardness of the surfacing layer is very high (HRC can reach more than 60), under certain working conditions, especially in Under some corrosive abrasive wear conditions, the surfacing layer of this alloy system is often not ideal

Method used

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  • Surfacing flux-cored wire and manufacturing method thereof

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preparation example Construction

[0037] The present invention also provides a preparation method of surfacing welding flux-cored wire, the steps of the method include:

[0038] The powder of each component is sieved separately;

[0039] Dry the sifted powder;

[0040] Mix the dried components according to the corresponding mass percentages, fully mix the prepared medicinal powder with a three-dimensional powder mixer to obtain a mixture, keep it dry until it is loaded into the medicinal powder hopper of the molding production line;

[0041] When the U-shaped steel strip passes through the powder feeder of the forming production line, the mixture is added to the U-shaped steel strip to make surfacing flux-cored wire.

[0042] The addition of alloying elements refines the structure of the surfacing layer, and the refinement of the structure is equivalent to an increase in the number of hard phases. To a certain extent, the harmful effects caused by grinding and peeling are reduced, thereby improving wear resis...

Embodiment 1

[0049] A surfacing welding flux-cored welding wire, the components it contains and the mass percentage of each component are as follows:

[0050] Marble 3%;

[0051] Fluorite 4%;

[0052] Silicate 2%;

[0053] graphite 5%;

[0054] Metal chromium 20%;

[0055] High carbon ferrochrome 66%.

[0056] The steps of the preparation method of the surfacing flux-cored wire include:

[0057] The powder of each component is sieved separately;

[0058] Dry the sifted powder;

[0059] Mix the dried components according to the corresponding mass percentages, fully mix the prepared medicinal powder with a three-dimensional powder mixer to obtain a mixture, keep it dry until it is loaded into the medicinal powder hopper of the molding production line;

[0060] When the U-shaped steel strip passes through the powder feeder of the forming production line, the mixture is added to the U-shaped steel strip to make surfacing flux-cored wire.

[0061] The surfacing welding flux-cored wire pre...

Embodiment 2

[0063] A surfacing welding flux-cored welding wire, the components it contains and the mass percentage of each component are as follows:

[0064] Marble 7%;

[0065] Fluorite 8%;

[0066] Silicate 6%;

[0067] graphite 9%;

[0068] Metal chromium 10%;

[0069] High carbon ferrochrome 60%, 100% total.

[0070] The steps of the preparation method of the surfacing flux-cored wire include:

[0071] The powder of each component is sieved separately;

[0072] Dry the sifted powder;

[0073] Mix the dried components according to the corresponding mass percentages, fully mix the prepared medicinal powder with a three-dimensional powder mixer to obtain a mixture, keep it dry until it is loaded into the medicinal powder hopper of the molding production line;

[0074] When the U-shaped steel strip passes through the powder feeder of the forming production line, the mixture is added to the U-shaped steel strip to make surfacing flux-cored wire.

[0075] The surfacing welding flux-...

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Abstract

The invention discloses a surfacing flux-cored wire and a manufacturing method thereof. The surfacing flux-cored wire consists of the following components in percentage by mass: 3-7% of marbles, 4-8% of fluorite, 2-6% of silicate, 5-9% of graphite, 10-20% of chromium metal and 60-70% of high carbon ferro-chrome, based on 100% in total. The surfacing flux-cored wire disclosed by the invention can be used to obtain a very uniform welding seam texture in case of not adding other alloy elements, so that hardness of the welding seam texture can be guaranteed, and wear resistance of the welding seam texture is improved.

Description

technical field [0001] The invention relates to a surfacing welding flux-cored welding wire and a preparation method thereof. Background technique [0002] At present, Fe-Cr-C alloy system is widely used in the high-hardness and wear-resistant surfacing flux-cored wire, and the wear-resistant hard phase structure in the surfacing structure is mainly chromium carbide structure. However, this kind of surfacing structure is not very uniform in the weld of general flux-cored wire. Although the hardness of the surfacing layer is very high (HRC can reach more than 60), under certain working conditions, especially in Under some corrosive abrasive wear conditions, the surfacing layer of this alloy system is often not ideal. Contents of the invention [0003] The technical problem to be solved by the present invention is to overcome the defects of the prior art and provide a flux-cored wire for surfacing welding, which can obtain a very uniform weld structure without adding other ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B23K35/368B23K35/40B23K35/24
CPCB23K35/0266B23K35/24B23K35/3605B23K35/368B23K35/406
Inventor 吴郁均
Owner 株洲湘江电焊条有限公司
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