Nickel base welding rod of Ni-Cr-Mo alloy system

A technology of nickel-chromium-molybdenum alloy and nickel-based welding rod, which is applied in welding medium, welding equipment, metal processing equipment, etc., can solve the problem of unretrieved nickel-based welding rod, etc., achieve good welding processability, simple production process, and slag removal convenient effect

Inactive Publication Date: 2013-03-13
725TH RES INST OF CHINA SHIPBUILDING INDAL CORP
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003]There are only two domestic patents on nickel-based electrodes: ZL 2009 1 0227721.5 (a nickel-based electrode, nickel-chromium-iron alloy system) and ZL 2009 1 0227586.4 (a Nickel-based welding rods for AC welding, nickel-molybdenum alloy system) are all applied by the No. 725 Research Institute

Method used

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  • Nickel base welding rod of Ni-Cr-Mo alloy system
  • Nickel base welding rod of Ni-Cr-Mo alloy system

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0034] The formula of embodiment is as shown in table 1.

[0035] Table 1 (%)

[0036]

[0037] The composition of the ERNiCrMo-3 welding core used in the examples is (%): C0.033, Si0.094, Cr: 21.50, Mn0.050, Fe0.141, Cu0.062, Nb+Ta: 3.59, S0.005 , P0.011, Mo9.35, Ni65.23.

[0038] The implementation effect is shown in Table 2 and Table 3.

[0039] Table 2 Chemical composition of deposited metal (%)

[0040] element C mn Si S P Cr Ni Mo Nb Fe Cu Example 1 0.037 0.854 0.607 ＜0.0050 0.0053 20.60 58.75 8.90 3.06 6.27 0.017

[0041] Table 3 Mechanical properties of deposited metal

[0042]

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Abstract

The invention introduces a nickel base welding rod of a Ni-Cr-Mo alloy system. The nickel base welding rod comprises a core wire and a coating and is characterized in that the core wire is an ERNiCrMo-3 core wire; and the coating comprises 20-40% of marble, 25-35% of fluorite, 2-5% of bentonite, 1-4% of ferrosilicon, 1-4% of manganese metal, 0-2% of sodium carbonate, 1-3% of quartz, 1-3% of strontium carbonate, 2-5% of barium fluoride, 5-10% of barium carbonate, 2-6% of potassium titanate, 2-5% of ferrotitanium, 3-6% of niobium powder and 1-4% of chromium metal. The nickel base welding rod produced by the invention is relatively high in strength, has deposited metal tensile strength which is up to more than 760MPa, is better in low-temperature impact toughness, has an impact powder average value of more than 40J at minus 196 DEG C, and is favorable in welding technological efficiency, stable in arcing during welding, easy in operation, good in formation of welding seams, convenient in deslagging, simple in production process and lower in cost.

Description

technical field [0001] The invention relates to a welding material, in particular to a nickel-based welding rod of nickel-chromium-molybdenum alloy system. Background technique [0002] In recent years, nickel-based alloys have been used more and more widely. Nickel-based alloys refer to alloys based on nickel (Ni≥50%), containing other alloying elements, and resistant to corrosion in some media. There are mainly nickel, nickel-molybdenum (nickel-molybdenum-iron) alloy, nickel-chromium (nickel-iron) alloy, nickel-chromium-molybdenum and nickel-iron-chromium and so on. Nickel-based alloys are mainly used in extreme environments with harsh service conditions and high safety requirements that are difficult for general steel. With the continuous and rapid development of my country's economy, the equipment manufacturing industry has become a pillar industry of the national economy. The prominent features of the development of the equipment manufacturing industry are: the parame...

Claims

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Application Information

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IPC IPC(8): B23K35/30B23K35/365B23K35/368
Inventor 黄连涛郭敬杰吴伦发
Owner 725TH RES INST OF CHINA SHIPBUILDING INDAL CORP
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