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Ultralow-carbon high-temperature-resistant welding wire and preparation method thereof

A high-temperature, ultra-low carbon technology, used in welding equipment, welding media, manufacturing tools, etc., to achieve the effect of reducing intergranular corrosion, lowering melting point, good weldability and casting performance

Active Publication Date: 2019-12-10
常州长海焊材有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Reducing the carbon content in the welding wire can effectively reduce the carbon content in the weld seam, but the reduction of the carbon content in the welding wire affects the mechanical properties of the welding wire. Therefore, while ensuring the low carbon content of the welding wire, improving the mechanical properties of the welding wire is currently a problem that needs to be solved question

Method used

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  • Ultralow-carbon high-temperature-resistant welding wire and preparation method thereof
  • Ultralow-carbon high-temperature-resistant welding wire and preparation method thereof

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Experimental program
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Effect test

Embodiment 1

[0034] The chemical composition of an ultra-low carbon high temperature resistant welding wire is calculated by mass percentage: C is 0.02%, Cr is 23.5%, Si is 2.5%, Ni is 13.2%, Ti is 0.8%, Mn is 0.28%, Zr is 0.35% %, Sc is 0.45%, Mo is 0.22%, Nb is 0.41%, Mg is 4.3%, Al is 0.9%, P is 0.05%, S is 0.04%, V is 0.33%, B is 1.45%, and the balance is Fe and other unavoidable impurity elements.

[0035] The preparation method of the ultra-low carbon high temperature resistant welding wire specifically includes the following steps:

[0036] Step 1. Ingredients smelting: Weigh each component according to the ratio, and then put it into a heating furnace for smelting, and the smelting temperature is 1850°C;

[0037] Step 2. Refining: After all the components in the heating furnace are melted, add a refining agent and stir evenly. The refining agent accounts for 0.3% of the total mass of the alloy liquid, and the refining temperature is 1600°C;

[0038] Step 3. Casting: After refinin...

Embodiment 2

[0043] The chemical composition of an ultra-low carbon high temperature resistant welding wire is calculated by mass percentage: C is 0.03%, Cr is 22.8%, Si is 2.8%, Ni is 13.6%, Ti is 0.6%, Mn is 0.35%, Zr is 0.41% %, Sc is 0.52%, Mo is 0.22%, Nb is 0.41%, Mg is 4.3%, Al is 0.9%, P is 0.05%, S is 0.04%, V is 0.33%, B is 1.45%, and the balance is Fe and other unavoidable impurity elements.

[0044] The preparation method of the ultra-low carbon high temperature resistant welding wire specifically includes the following steps:

[0045] Step 1. Ingredients smelting: weigh each component according to the ratio, and then put them into the heating furnace for smelting;

[0046] Step 2, refining: After all the components in the heating furnace are melted, add a refining agent and stir evenly, and the refining agent accounts for 0.4% of the total mass of the alloy liquid;

[0047] Step 3, Casting: After refining, let it stand for 30 minutes, remove the slag on the surface of the al...

Embodiment 3

[0052] The chemical composition of an ultra-low carbon high temperature resistant welding wire is calculated by mass percentage: C is 0.01%, Cr is 22.0%, Si is 3.5%, Ni is 12.0%, Ti is 1.2%, Mn is 0.1%, Zr is 0.5% %, Sc is 0.6%, Mo is 0.1%, Nb is 0.5%, Mg is 3.0%, Al is 1.2%, P is 0.07%, S is 0.05%, V is 0.4%, B is 1.6%, and the balance is Fe and other unavoidable impurity elements.

[0053] The preparation method of the ultra-low carbon high temperature resistant welding wire specifically includes the following steps:

[0054] Step 1. Ingredients smelting: weigh each component according to the ratio, and then put them into the heating furnace for smelting;

[0055] Step 2, refining: After all the components in the heating furnace are melted, add a refining agent and stir evenly, the refining agent accounts for 0.5% of the total mass of the alloy liquid;

[0056] Step 3. Casting: After refining, let it stand for 20 minutes, remove the slag on the surface of the alloy liquid,...

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Abstract

The invention relates to an ultralow-carbon high-temperature-resistant welding wire and a preparation method thereof. The ultralow-carbon high-temperature-resistant welding wire comprises the following chemical components, in percentage by mass, of 0.01%-0.04% of C, 22.0%-24.0% of Cr, 1.5%-3.5% of Si, 12.0%-14.0% of Ni, 0.5%-1.2% of Ti, 0.1%-0.4% of Mn, 0.2%-0.5% of Zr, 0.3%-0.6% of Sc, 0.1%-0.3%of Mo, 0.3%-0.5% of Nb, 3.0%-5.0% of Mg, 0.6%-1.2% of Al, 0.03%-0.07% of P, 0.02%-0.05% of S, 0.2%-0.4% of V, 1.3%-1.6% of B, and the balance Fe and other inevitable impurity elements. According to the method, the mechanical property of the welding wire can be improved while the low carbon of the welding wire is ensured.

Description

technical field [0001] The invention relates to the technical field of welding wire, in particular to an ultra-low carbon high temperature resistant welding wire and a preparation method thereof. Background technique [0002] Welding wire is used as filler metal or as conductive wire welding material at the same time. In gas welding and gas tungsten arc welding, welding wire is used as filler metal. In submerged arc welding, electroslag welding and other gas shielded arc welding , the wire is both the filler metal and the conductive electrode. Stainless steel is widely used in many fields due to its good corrosion resistance, durability, wear resistance and other properties. In the process of industrial application of stainless steel, in order to meet some large-scale requirements, stainless steel needs to be welded, and the intergranular corrosion of stainless steel welds is a major problem for the chemical industry. [0003] When the stainless steel with intergranular co...

Claims

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Application Information

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IPC IPC(8): C22C38/54C22C38/50C22C38/48C22C38/46C22C38/44C22C38/02C22C38/04C22C38/06C22C38/60C21D8/06B21C37/04B23K35/30
CPCB21C37/047B23K35/0261B23K35/3086C21D8/065C22C38/002C22C38/005C22C38/04C22C38/06C22C38/34C22C38/44C22C38/46C22C38/48C22C38/50C22C38/54C22C38/60
Inventor 毛兰秀
Owner 常州长海焊材有限公司
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