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Core welding-wire material and preparation method thereof

A technology of welding core and allowance, applied in welding/cutting medium/material, welding equipment, welding medium, etc.

Active Publication Date: 2020-01-10
PANGANG GROUP JIANGYOU CHANGCHENG SPECIAL STEEL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Compared with the development and industrialized production of 9Ni steel and its supporting welding materials in foreign countries, the development of welding technology and welding materials in my country is still in its infancy, and there are no reports showing that domestic 9Ni steel supporting welding materials are used in engineering practice.

Method used

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  • Core welding-wire material and preparation method thereof
  • Core welding-wire material and preparation method thereof
  • Core welding-wire material and preparation method thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0068] Metal nickel, metal chromium, metal tungsten, metal molybdenum and 2 / 3 carbon are put into the furnace at one time, the remaining 1 / 3 carbon is added after the alloy liquid is completely melted and before refining, and metal aluminum, sponge titanium and metal niobium are added after refining , metal manganese and nickel-magnesium alloy are added before tapping for vacuum induction melting; during the charging process, the vacuum furnace is filled with 50 torr of argon before metal manganese is added;

[0069] The deoxidation method in the vacuum induction smelting process is: sequentially carry out carbon deoxidation, Al deoxidation, Ce deoxidation and Mg deoxidation; the vacuum degree in the deoxidation process is 1Pa;

[0070] The desulfurization method in the vacuum induction smelting process is as follows: slag desulfurization, Ce desulfurization and Mg desulfurization are carried out in sequence; the vacuum degree in the desulfurization process is 1 Pa;

[0071] T...

Embodiment 2

[0087] Metal nickel, metal chromium, metal tungsten, metal molybdenum and 2 / 3 carbon are put into the furnace at one time, the remaining 1 / 3 carbon is added after the alloy liquid is completely melted and before refining, and metal aluminum, sponge titanium and metal niobium are added after refining , metal manganese and nickel-magnesium alloy are added before tapping for vacuum induction melting; during the charging process, the vacuum furnace is filled with 50 torr of argon before metal manganese is added;

[0088] The deoxidation method in the vacuum induction smelting process is: sequentially carry out carbon deoxidation, Al deoxidation, Ce deoxidation and Mg deoxidation; the vacuum degree in the deoxidation process is 1Pa;

[0089] The desulfurization method in the vacuum induction smelting process is as follows: slag desulfurization, Ce desulfurization and Mg desulfurization are carried out in sequence; the vacuum degree in the desulfurization process is 1Pa;

[0090] Th...

Embodiment 3

[0107] Metal nickel, metal chromium, metal tungsten, metal molybdenum and 2 / 3 carbon are put into the furnace at one time, the remaining 1 / 3 carbon is added after the alloy liquid is completely melted and before refining, and metal aluminum, sponge titanium and metal niobium are added after refining , metal manganese and nickel-magnesium alloy are added before tapping for vacuum induction melting; during the charging process, the vacuum furnace is filled with 50 torr of argon before metal manganese is added;

[0108] The deoxidation method in the vacuum induction smelting process is: sequentially carry out carbon deoxidation, Al deoxidation, Ce deoxidation and Mg deoxidation; the vacuum degree in the deoxidation process is 1Pa;

[0109] The desulfurization method in the vacuum induction smelting process is as follows: slag desulfurization, Ce desulfurization and Mg desulfurization are carried out in sequence; the vacuum degree in the desulfurization process is 1Pa;

[0110] Th...

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Abstract

The invention provides a core welding-wire material. The core welding-wire material contains the following components of 3.0wt%-4.5wt% of Mn, 13wt%-14wt% of Cr, 5.8wt%-6.2wt% of Mo, less than or equalto 0.05wt% of Cu, less than or equal to 1wt% of Fe; 0.5wt%-1.0wt% of Nb, 1.4wt%-1.6wt% of W, less than or equal to 0.002wt% of O, less than or equal to 0.005wt% of N, less than or equal to 0.3wt% ofAl, less than or equal to 0.3wt% of Ti; less than or equal to 0.1wt% of Si, and the balance Ni. According to the core welding-wire material, through optimizing a melting technology, a heating technology in the hammer cogging process, a deformation technology, and a heating technology in the rolling process of an alloy with the above components, a wire rod with phi 8 mm is manufactured; and the core welding-wire material can be applied to the construction and building of a LNG storage tank. The invention further provides a preparation method of the core welding-wire material.

Description

technical field [0001] The invention relates to the field of welding technology, in particular to a welding core material and a preparation method thereof. Background technique [0002] The manufacturing technology and market of 9Ni steel-related matching welding materials are monopolized by a few international multinational companies. At present, my country's LNG storage tank construction welding materials are completely dependent on imports, which makes my country's fully independent production of LNG storage tanks a challenge. Compared with the development and industrial production of 9Ni steel and its matching welding materials abroad, the development of welding technology and welding materials in my country is still in its infancy, and there are no reports showing that domestic 9Ni steel matching welding materials are used in engineering practice. Contents of the invention [0003] In view of this, the object of the present invention is to provide a welding core mater...

Claims

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Application Information

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IPC IPC(8): B23K35/30B23K35/40
CPCB23K35/304B23K35/40
Inventor 裴丙红王瑞白亚波王信才何云华
Owner PANGANG GROUP JIANGYOU CHANGCHENG SPECIAL STEEL
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