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Submerged arc flux-cored wire for Cr13 series universal type build up welding, preparation for submerged arc flux-cored wire and application for submerged arc flux-cored wire

A flux-cored wire, general-purpose technology, used in welding equipment, welding equipment, arc welding equipment, etc., can solve the problems of uneven composition of N-containing raw materials, unreachable and uneven welding materials, etc., and achieve excellent welding process performance. , High surfacing efficiency, stable and uniform hardness

Active Publication Date: 2014-03-05
WUHAN TEMO WELDING CONSUMABLES CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Therefore, domestic manufacturers followed suit one after another. However, due to the small amount of N in the welding consumables and the uneven composition of domestic N-containing raw materials, the imitation of WA’s technology failed, and the produced welding consumables could not achieve the desired effect.
Some manufacturers also adopt the technology of adding C and N at the same time. For example, the hardness of the surfacing layer in the domestic patent "CN200510025491.6" is HRC42~48, and the deviation is HRC 6, which is still uneven

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0046]The Cr13 series general-purpose submerged-arc flux-cored wire for surfacing welding in this embodiment includes the sheath and the wrapped flux-cored core. The ratio of each component in the flux-cored core to the total weight of the wire is: high-carbon ferrochrome: 2.8 %; micro-carbon ferrochrome: 3.5%; metal chromium: 13%; nickel powder: 3.6%; molybdenum ferro: 2%; medium carbon ferromanganese: 4.5%; It is: WHF80.270 (characteristics: loose-load ratio range 2.70±0.1g / cm 3 of reduced iron powder).

[0047] The preparation method of the flux cored wire:

[0048] 1) Pass high-carbon ferrochrome, micro-carbon ferrochrome, medium-carbon ferromanganese and ferro-titanium through 80-mesh sieve respectively, mix them evenly according to the stated amount, and add water glass (the amount of water glass added is 100% for high-carbon ferrochrome, micro- Carbon ferrochromium, medium carbon ferromanganese and titanium ferromanganese are less than 0.5% of the total weight, and mo...

Embodiment 2

[0056] The Cr13 series general-purpose submerged-arc flux-cored wire for surfacing welding in this embodiment includes the sheath and the wrapped flux-cored core. The ratio of each component in the flux-cored core to the total weight of the wire is: high-carbon ferrochrome: 6 %; micro-carbon ferrochrome: 2.5%; metal chromium: 11%; nickel powder: 2%; molybdenum ferro: 1.5%; medium carbon ferromanganese: 4.5%; The packing ratio is 2.70±0.1g / cm 3 of reduced iron powder).

[0057] The preparation method of the flux cored wire:

[0058] 1) Pass high-carbon ferrochrome, micro-carbon ferrochrome, medium-carbon ferromanganese and ferro-titanium through 80-mesh sieve respectively, mix them evenly according to the stated amount, and add water glass (the amount of water glass added is 100% for high-carbon ferrochrome, micro- Carbon ferrochromium, medium carbon ferromanganese and titanium ferromanganese are less than 0.5% of the total weight, and most of them will evaporate when baked a...

Embodiment 3

[0066] The Cr13 series general-purpose submerged-arc flux-cored wire for surfacing welding in this embodiment includes the sheath and the wrapped flux-cored core. The ratio of each component in the flux-cored core to the total weight of the wire is: high-carbon ferrochrome: 5 %; micro-carbon ferrochrome: 3%; metal chromium: 12%; nickel powder: 3.5%; molybdenum ferro: 2%; medium carbon ferromanganese: 3%; The packing ratio is 2.70±0.1g / cm 3 of reduced iron powder).

[0067] The preparation method of the flux cored wire:

[0068] 1) Pass high-carbon ferrochrome, micro-carbon ferrochrome, medium-carbon ferromanganese and ferro-titanium through 80-mesh sieve respectively, mix them evenly according to the stated amount, and add water glass (the amount of water glass added is 100% for high-carbon ferrochrome, micro- Carbon ferrochromium, medium carbon ferromanganese and titanium ferromanganese are less than 0.5% of the total weight, and most of them will evaporate when baked at hi...

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Abstract

The invention discloses a submerged arc flux-cored wire for Cr13 series universal type build up welding, preparation for the submerged arc flux-cored wire and application for the submerged arc flux-cored wire. The flux-cored wire comprises a cover and an encapsulated flux-cored core wire, wherein the weight of the flux-cored core wire accounts for 35-36% of the total weight; and the flux-cored core wire comprises the following components in percentage by weight: 2.8-6% of high carbon ferro-chrome, 2.5-3.5% of micro-carbon ferro chrome, 11-13% of chromium metal, 2-3.6% of nickel powder, 1.5-2% of ferro-molybdenum, 2.8-4.5% of mid-carbon ferromanganese, 1-5.4% of ferrotitanium and the balance iron powder. The submerged arc flux-cored wire for the Cr13 series universal type build up welding is high in build up welding; the hardness of a build up welding layer is stable and uniform (the hardness deviation is smaller than or equal to HRC 3); and welding technological properties are excellent.

Description

technical field [0001] The invention relates to the field of welding materials, in particular to a Cr13 series general-purpose submerged arc flux-cored welding wire for surfacing welding and its preparation and application. Background technique [0002] Cr13 is a martensitic stainless steel material with high hardness and corrosion resistance. It can be used for surfacing welding on a variety of substrates. It is a general-purpose surfacing material. At present, the repair of continuous casting rolls, hot rolling rolls, forming rolls, scale breaking rolls, pinch rolls and other components in my country's steel industry mainly uses this Cr13 series (such as 0Cr13, 1Cr13, 2Cr13, 3Cr13, etc.) welding materials. Due to the characteristics of large current, high deposition efficiency and high degree of automation of submerged arc welding wire, Cr13 series submerged arc solid or flux cored welding wire is generally used for repairing large diameter rolls, which is widely used. ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B23K35/24B23K35/40
CPCB23K9/04B23K9/18B23K35/308B23K35/368B23K35/406
Inventor 卢伟吕奎清黄明华高亮
Owner WUHAN TEMO WELDING CONSUMABLES CO LTD
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