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Copper-containing high-strength high-toughness welding rod deposited metal

A technology of deposited metal and high strength, which is applied in the direction of metal processing equipment, welding medium, welding equipment, etc., to achieve the effect of good welding processability

Inactive Publication Date: 2012-10-17
725TH RES INST OF CHINA SHIPBUILDING INDAL CORP
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Problems solved by technology

These high strength electrodes are not currently used for hull structure welding

Method used

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  • Copper-containing high-strength high-toughness welding rod deposited metal

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Embodiment Construction

[0024] Welded 10CrNi5MoV steel with electrodes of this deposited metal composition, prepared deposited metal samples, and carried out basic performance tests. The results are listed in Table 1~Table 3. Among them, Table 1 is the welding process parameters of the deposited metal test plate in the embodiment; Table 2 is the chemical composition of the deposited metal in Embodiment 1 to Embodiment 5; Table 3 is the mechanical properties of the deposited metal in Embodiment 1 to Embodiment 5.

[0025] Table 1

[0026] Welding current, A Arc voltage, V Welding speed, cm / min Interpass temperature, ℃ 170±10 24~28 13~17 100±20

[0027] Table 2 The unit is mass percent

[0028] element C Si mn Cr Ni Mo Cu S P Embodiment one 0.030 0.316 0.900 0.832 2.20 0.40 0.70 0.0069 0.017 Embodiment two 0.050 0.264 0.702 0.690 2.85 0.47 0.814 0.0076 0.013 Embodiment three 0.046 0.350 0.830 1.00 2.48 0.60 0.93 ...

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Abstract

The invention discloses a copper-containing high-strength high-toughness welding rod deposited metal. The deposited metal belongs to a Mn-Ni-Cr-Cu system which comprises the following chemical components in percentage by weight: C (0.030 / 0.080), Mn (0.60 / 0.90), Si (0.15 / 0.35), Ni( 2.20 / 2.85), Cr (0.62 / 1.00), Mo (0.40 / 0.60), Cu (0.70 / 1.10) and Fe (the balance). Compared with other high-strength hand-made welding rods, the metal provided by the invention contains a proper amount of C, a proper amount of Ni, and a higher amount of Cu. The deposited metal disclosed by the invention is used for welding 10CrNi5MoV steel, the welding process is good, the yield strength of the deposited metal is above 735Mpa, the elongation coefficient is over 16 percent, the cross section shrinkage rate is greater than 50 percent, and the low-temperature impact at -50 DEG C is over 34J and the deposited metal meets related standards.

Description

technical field [0001] The invention relates to a welding material technology, in particular to a copper-containing high-strength and high-toughness welding rod deposited metal. Background technique [0002] At present, most of the manual electrodes used in the welding of hull structural steel in my country are ordinary low-alloy structural steel electrodes, using ordinary H08 welding cores, with excessive alloying elements in the coating, and the Ni content in the deposited metal is below 1.4%. Cu, such as 390MPa TH907 electrode, 440MPa TH945 electrode, etc. There are also studies on welding rods for high-strength structural steel, such as the patent 200310100196 welding rod, the yield strength of the deposited metal is above 950MPa, the Mn content is 1.2~1.9%, and the Mo precipitation strengthening is the main content, the Mo content is above 0.66%, and does not contain Cu; the patent 03104883.8 welding rod, the yield strength of the deposited metal is above 760MPa, the Mn...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B23K35/30
Inventor 付学满丁永忠王效莲
Owner 725TH RES INST OF CHINA SHIPBUILDING INDAL CORP
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