High-manganese high-chromium self-shielded welding wire and production technique thereof

A technology of self-protection and welding wire, applied in the direction of welding medium, manufacturing tools, welding equipment, etc., can solve problems such as welding cracks, poor service conditions, damage, etc., and achieve the effect of avoiding welding cracks, reducing welding costs, and good crack resistance

Inactive Publication Date: 2013-07-31
SUZHOU WEIAODE WELDING MATERIAL & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The related mechanical components mentioned above have harsh service conditions and are designed with various base metal alloys, such as medium carbon steel, high carbon steel, die steel, high chromium wear-resistant alloy and other metals with poor weldability
Most of the parts to be repaired have serious damage and working fatigue layer on the surface, and welding cracks are easily generated during the welding process

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] (a) Preparation: use high-quality low-carbon steel strip, specification 0.3X16 and alloy powder core, the proportion of alloy powder core to the total mass of welding wire is 45%;

[0026] (b) Mixing: the alloy powder core, as shown in Table 1, the composition of the alloy powder core is (calculated by mass percentage), in which 20% of metal chromium; 26.7% of metal manganese; 3.33% of metal nickel %; Ferrosilicon 2.5%; Molybdenum 4.5%; Ferrovanadium 3.5%; Mineral 15%, the balance is pure iron powder mixed evenly;

[0027] (c) Forming: use welding wire production machines to wrap and shape the steel strip, and fill the formed steel strip with alloy powder core;

[0028] (d) Drawing and sizing to make a self-shielded welding wire with a diameter of 2.8mm;

[0029] (e) Finished product.

[0030] Table 1: The alloy composition (by mass percentage) of the self-shielding alloy welding wire is:

[0031] element C Cr mn Ni Si Mo V Fe Wt% 0.06 9 ...

Embodiment 2

[0033] (a) Preparation: use high-quality low-carbon steel strip, specification 0.3X16 and alloy powder core, the proportion of alloy powder core to the total mass of welding wire is 45%;

[0034] (b) Mixing: the alloy powder core, as shown in Table 2, the composition of the alloy powder core is (calculated by mass percentage), metal chromium 20%; high-carbon chromium 1%; metal manganese 31% %; metal nickel 4.5%; ferrosilicon 2.5%; metal molybdenum 4.5%; vanadium iron 2.5%; minerals 15%; the balance is pure iron powder;

[0035] (c) Forming: use welding wire production machines to wrap and shape the steel strip, and fill the formed steel strip with alloy powder core;

[0036] (d) Drawing and sizing to make a self-shielded welding wire with a diameter of 2.8mm;

[0037] (e) Finished product.

[0038] Table 2: The alloy composition (by mass percentage) of the self-shielding alloy welding wire is:

[0039] element C Cr mn Ni Si Mo V Fe Wt% 0.12 10 ...

Embodiment 3

[0044] (a) Preparation: use high-quality low-carbon steel strip, specification 0.3X16 and alloy powder core, the proportion of alloy powder core to the total mass of welding wire is 45%;

[0045] (b) Mixing: the alloy powder core, as shown in Table 3, the composition of the alloy powder core is (calculated by mass percentage), metal chromium 27%; high-carbon chromium 5%; metal manganese 35% %; metal nickel 4.5%; ferrosilicon 2.5%; metal molybdenum 6.5%; vanadium iron 2.5%; minerals 15%; the balance is pure iron powder;

[0046] (c) Forming: use welding wire production machines to wrap and shape the steel strip, and fill the formed steel strip with alloy powder core;

[0047] (d) Drawing and sizing to make a self-shielded welding wire with a diameter of 2.8mm;

[0048] (e) Finished product.

[0049] Table 3: The alloy composition (by mass percentage) of the self-shielding alloy welding wire is:

[0050] element C Cr mn Ni Si Mo V Fe Wt% 0.18 14 ...

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Abstract

The invention discloses a high-manganese high-chromium self-shielded welding wire and a production technique thereof. The high-manganese high-chromium self-shielded welding wire comprises a steel strip and an alloy powder core, wherein the steel strip is wrapped on the alloy powder core. The alloy powder core comprises the following components in percentage by mass: 0-0.2% of C, 6-20% of Cr, 10-20% of Mn, 0-5% of Ni, 0-2% of Si, 0-3% of Mo and 0-3% of V. The high-chromium high-manganese self-shielded welding wire disclosed by the invention has the advantages of high welding efficiency and favorable cracking resistance, can be used for overlay welding of different alloy mother metals, and can be used as a precoating or transitional material for welding dissimilar steel. Meanwhile, the alloy has favorable working hardenability, can be designed as a surface strengthening material, and has shock resistance and wear resistance.

Description

technical field [0001] The invention relates to a welding wire which can be used for backing and surfacing of various metal base metal parts and welding of intermediate layer alloys, in particular to a high manganese and high chromium self-shielding welding wire. Background technique [0002] In cement, steel, mining, construction, electric power and other industrial fields, a large number of mechanical components suffer from severe wear failure and impact failure, which directly causes consumption loss of such components, and leads to more production delays, equipment maintenance and other costs. Using surface surfacing welding to repair such scrapped parts, or designing surface surfacing special alloys for pre-protection during the new manufacturing process of parts, can obtain huge economic benefits. Therefore, it is of great significance to develop special alloys for such failure conditions. [0003] Due to the wide variety of parts that need to be surfacing and strengt...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B23K35/24B23K35/40
Inventor 苏奕敏
Owner SUZHOU WEIAODE WELDING MATERIAL & TECH
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