High-performance stainless steel surfacing nickel-based special welding wire and preparation method thereof
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A stainless steel, high-performance technology, applied in welding equipment, welding medium, manufacturing tools, etc., can solve problems such as reverse osmosis, excessive iron content in welding surface materials, etc., to reduce the tendency of cold cracks, improve intergranular corrosion resistance, The effect of good plasticity and toughness
Inactive Publication Date: 2018-08-17
DANYANG HUALONG SUPERIOR STEEL
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In addition, because the iron of carbon steel is prone to reverse osmosis during the surfacing process, the iron content of the welding surface material component exceeds the standard
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[0029] The present invention is described in further detail now in conjunction with embodiment.
[0030] The mass percentages of the constituent chemical elements in the welding wires of each of Examples 1-5 and Comparative Examples 1-4 (compared with Example 1) of the present invention are shown in Table 1:
[0031] Table 1
[0032]
[0033] The preparation method of a kind of high-performance stainless steel surfacing welding nickel-based special welding wire of embodiment 1-5 and comparative example 1-4 specifically comprises the following steps:
[0034] (1) According to the designed welding wire ingredients, use a vacuum electric furnace to smelt at a temperature of 1210-1250 ° C, keep warm for 1-1.5 hours, decarburize, dephosphorize and remove harmful impurities to the molten steel, so that C < 0.1%, tap the steel The temperature T ≥ 1250°C, the composition of the designed welding wire is shown in Table 1;
[0035] (2) Use VOD to carry out refining outside the furna...
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Abstract
The invention belongs to the field of welding materials and particularly relates to a high-performance stainless steel surfacing nickel-based special welding wire and a preparation method thereof. Thewelding wire comprises chemical elements including, by mass, not greater than 0.04% of C, 0.1-0.5% of Mn, not greater than 0.001% of P, not greater than 0.001% of S, 0.05-0.1% of Si, 20-25% of Cr, 8-12% of Mo, 2-6% of Nb, 0.2-0.5% of Ti, not greater than 0.001% of Cu, 0.1-0.3% of Al, not greater than 1% of Fe, 0.03-0.08% of Co, 0.05-0.1% of the rare earth element RE, 30-80 ppm of N and the balance Ni and inevitable impurity elements. The preparation method comprises the steps of (1) vacuum electric-furnace smelting; (2) VOD external refining; (3) horizontal continuous casting; (4) tandem rolling; and (5) tandem drawing. The welding wire provided by the invention has the good properties of active gas resistance and reducing acid medium corrosion resistance, the electric arc stability and slag stripping performance are excellent during welding, and welding metal with high strength, good tenacity, flaw resistance, high temperature cracking resistance and corrosion resistance is obtained;and the preparation technology is simple, the raw material and manufacturing cost is low, environmental friendliness is achieved, no pollution is generated, and the welding wire and the preparation method are suitable for industrial volume production and remarkable in economic benefit.
Description
technical field [0001] The invention belongs to the field of welding materials, and in particular relates to a high-performance stainless steel surfacing welding nickel-based special welding wire and a preparation method thereof. Background technique [0002] Nickel-based alloy welding wire has good properties of resistance to active gas, caustic medium and reducing acid medium corrosion, and has the characteristics of high strength, good plasticity, cold and hot deformation, processing and welding, so it is widely used in In petrochemical, metallurgy, atomic energy, marine development, aviation, aerospace and other industries, it is a very important corrosion-resistant metal material to solve engineering corrosion problems that cannot be solved by general stainless steel and other metals and non-metallic materials. Nickel-based alloys refer to alloys that are based on nickel and contain alloying elements, and are corrosion-resistant in some media. [0003] Welding material...
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