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Low-alloy heat-resistant steel submerged arc welding wire

A technology of submerged arc welding wire and heat-resistant steel, applied in arc welding equipment, welding medium, welding equipment and other directions, can solve the problems of complex composition design, increase the difficulty of smelting, and high cost, achieve simple design, reduce embrittlement phenomenon, Good long-lasting plasticity

Inactive Publication Date: 2009-04-15
CHENGDU XINDAYANG WELDING MATERIAL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The composition design is relatively complicated and messy, which increases the difficulty of smelting; the cost is also high, and it is not heat-resistant

Method used

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  • Low-alloy heat-resistant steel submerged arc welding wire
  • Low-alloy heat-resistant steel submerged arc welding wire

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] The low-alloy heat-resistant steel submerged arc welding wire of the present invention has the following components and mass percentages:

[0024] C 0.05~0.16,

[0025] Mn 0.40~1.00,

[0026] Si 0.05~0.35,

[0027] S≤0.015,

[0028] P≤0.015,

[0029] Cu≤0.35,

[0030] Cr 0.70~1.60,

[0031] Ni≤0.20,

[0032] Mo 0.40~0.80,

[0033] V≤0.05,

[0034] The balance is Fe.

[0035] Further, the preferred range of Cr is 0.80-1.40%, the preferred range of Mo is 0.45-0.65, and the preferred range of S and P is ≤0.012%.

[0036] Each component and composition of specific embodiment are shown in Table 1

[0037] The finished product chemical composition (%) of table 1 embodiment welding wire

[0038] serial number

C

Si

mn

Cu

Cr

Mo

S

P

1

0.08

0.17

0.70

0.17

1.15

0.48

0.009

0.009

2

0.08

0.18

0.72

0.18

1.17

0.48

0.009 ...

Embodiment 2

[0047] In the laboratory, the 12CrMo steel test plates were divided into two groups after 10 times of welding, with 5 batches in each group. The first group was welded with the welding wire of the present invention, and the second group was welded with the welding wire of the background technology. The results of the first set of experiments are shown in Table 2. The results of the second set of experiments are shown in Table 3.

[0048] Table 3 embodiment work background technology welding wire deposited metal mechanical property

[0049]

[0050] From the experimental results of Example welding wire Table 2 and background technology welding wire Table 3, it can be seen that the tensile strength, yield strength, elongation, and Akv impact value of the embodiment welding wire are significantly higher than the mechanical properties of the background technology welding wire deposited metal.

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Abstract

The invention relates to a low alloy heat-resisting steel submerged arc-welding wire, wherein the welding wire comprises the following components in weight percent: 0.05 to 016 of C, 0.40 to 1.00 of Mn, 0.05 to 0.35 of Si, less than and equal to 0.015 of S, less than and equal to 0.015 of P, less than and equal to 0.35 of Cu, 0.70 to 1.60 of Cr, less than and equal to 0.20 of Ni, 0.40 to 0.80 of Mo, less than and equal to 0.005 of V and the balance being Fe. Besides C, Si, Mn, S and P, the welding wire adopts a Cr-Mo alloy element heat-resisting system, the designed composition is simple, and the welding wire has the same strength, toughness and heat tolerance as the low alloy heat-resisting steel 12CrMo steel; the comprehensive performance of the deposited metal obtained by the welding wire is as follows: the yield strength is more than and equal to 485MPa, the tensile strength is more than and equal to 550MPa, and the elongation is more than and equal to 20 percent; and, the Akv at the temperature of 20 Celsius degrees below zero is more than and equal to 27J.

Description

technical field [0001] The invention belongs to the field of welding materials, and in particular relates to a low-alloy heat-resistant steel submerged arc welding wire. Background technique [0002] Existing submerged arc welding wires such as the patent "High Toughness Welding Wire Suitable for Low Carbon Microalloyed Steel" proposed by Yanshan University disclosed in Chinese Patent Application No. 02119591.9. The chemical composition formula of welding wire is as follows: C: 0.01~0.12%, Si: 0.10~0.40%, Mn: 0.60~2.30%, Cr: 0.01~0.22%, Mo: 0.08~0.60%, V: 0.004~0.06%, Cu : 0.01-0.50%, Ni: 0.01-0.60%, Al: 0.01-0.06%, Nb: 0.02-0.08%, Ti: 0.01-0.20%, B: 0.0001-0.01%, Re: 0.001-0.5%. [0003] This welding wire contains Cu, Cr, Ni, Mo, Nb, V, Ti, B, Re and other alloying elements. The composition design is relatively complicated and messy, which increases the difficulty of smelting; the cost is also high, and it is not heat-resistant. Contents of the invention [0004] The t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B23K35/30B23K9/18
Inventor 刘兴诚毛天平
Owner CHENGDU XINDAYANG WELDING MATERIAL
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