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Fe-Ni-Cr-Mo-Cu alloy

A technology of fe-ni-cr-mo-cu and alloy, which is applied in the field of Fe-Ni-Cr-Mo-Cu alloy, can solve the problems of unimproved melting and cutting properties, and achieve the prevention of melting loss, crack prevention and dross prevention The effect of attachment

Active Publication Date: 2021-08-17
NIPPON YAKIN IND KK
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0018] Although the technical solution of Patent Document 1 improves the corrosion resistance of the alloy, it does not improve the melt cutting property

Method used

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  • Fe-Ni-Cr-Mo-Cu alloy
  • Fe-Ni-Cr-Mo-Cu alloy
  • Fe-Ni-Cr-Mo-Cu alloy

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Experimental program
Comparison scheme
Effect test

Embodiment 1～15、 comparative example 1～9

[0110] The thickness of the Fe-Ni-Cr-Mo-Cu alloy that can be cut varies depending on the output characteristics of the device used for fusion cutting the Fe-Ni-Cr-Mo-Cu alloy. Here, the above-mentioned cutting conditions were set to electric current: 300 A, cutting speed: 1000 mm / min, gas flow rate: 20 L / min, and board thickness was set to 20 mm for evaluation.

[0111] Then, using a 60-ton electric furnace, through the argon oxygen decarburization method (AOD method) or the vacuum oxygen blowing decarburization method (VOD method) to the raw material (that is, with 30Ni-25Cr-8Mo-4Cu-0.2N balance Fe as the base material (base) and the concentration of alloy elements of Si, Al, Ti, Sn, and Zn are changed in various ways) are refined, and alloy ingots are produced by continuous casting or conventional casting. In addition, since Zn is an element which is very easily oxidized, it is added at the later stage of refining. Then, the produced alloy ingot was heat-treated in a heat t...

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Abstract

Provided is a Fe-Ni-Cr-Mo-Cu alloy in which the occurrence of cracks can be prevented even when cut by fusion cutting, and the occurrence of fusion loss and the adhesion of dross in the upper edge part can also be prevented. A Fe-Ni-Cr-Mo-Cu alloy for fusion cutting contains 0.004 to 0.025 mass% of carbon (C), 0.02 to 0.60 mass% of silicon (Si), 0.03 to 0.35 mass% of manganese (Mn), 0.040 mass% or less of phosphorus (P), 0.003 mass% or less of sulfur (S), 30.0 to 40.0 mass% of nickel (Ni), 21.0 to 25.0 mass% of chromium (Cr), 6.50 to 8.00 mass% of molybdenum (Mo), 0.18 to 0.28 mass% of nitrogen (N), 2.50 to 5.00 mass% of copper (Cu), 0.001 to 0.100 mass% of aluminum (Al), 0.001 to 0.010 mass% of titanium (Ti), 0.001 to 0.050 mass% of tin (Sn), and 0.001 to 0.030 mass% of zinc (Zn), with the balance being iron (Fe) and unavoidable impurities.

Description

technical field [0001] The present invention relates to a Fe-Ni-Cr-Mo-Cu alloy excellent in fusion cutting properties, and in particular to Fe-Ni-Cr-Mo-Cu capable of preventing cracks and melting loss of the upper edge after fusion cutting and preventing dross from adhering alloy, wherein the fusion cutting is a method of cutting while melting the material using laser, plasma, gas, powder or the like. Background technique [0002] Fe-Ni-Cr-Mo-Cu alloy has excellent corrosion resistance, so it is used in various technical fields such as seawater environments, chemical plants, and exhaust gas desulfurization devices mounted on ships. On the other hand, in the above-mentioned technical field, if general-purpose alloys such as stainless steel such as SUS304 and SUS316 are used, the corrosion resistance of general-purpose alloys is insufficient, so general-purpose alloys suffer from general corrosion, crevice corrosion, grain boundary corrosion, etc. Defects sometimes cause seri...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C38/02C22C38/04C22C38/06C22C38/42C22C38/44C22C38/50
CPCC22C38/02C22C38/04C22C38/004C22C38/001C22C38/44C22C38/42C22C38/50C22C38/008C22C38/06C22C38/002
Inventor 冈崎贤司矢部室恒轟秀和
Owner NIPPON YAKIN IND KK
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