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Compound process method for preparing laser modified layer on surface of monel alloy

A composite process and modified layer technology, applied in metal material coating process, coating and other directions, can solve problems such as shortening valve life

Active Publication Date: 2015-01-28
南通集智知识产权服务有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, micro-arc spark deposition also has certain disadvantages: because the surface deposition layer is very thin (about several hundred microns), if the service coating in the heavy medium valve pipeline is slightly peeled off, the substrate will be exposed immediately, and then The continuous erosion of medium particles greatly shortens the life of the valve, which obviously cannot meet the operating requirements in harsh environments.

Method used

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  • Compound process method for preparing laser modified layer on surface of monel alloy
  • Compound process method for preparing laser modified layer on surface of monel alloy
  • Compound process method for preparing laser modified layer on surface of monel alloy

Examples

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Effect test

Embodiment 1

[0066] Using Monel400 alloy as the base material, its chemical composition is: C 0.08, Fe 3, Mn 0.8, Si 0.10, Cu 28.0, Ni balance. Micro-arc spark deposition of NiCrMoFe alloy on the surface of the above-mentioned Monel alloy substrate, the pulse frequency is 150Hz, the deposition voltage is 60V, the protective gas argon flow rate is 5L / min, and the thickness of the deposited transition layer is 100μm; the electrode material used is a special Ni-based alloy electrode , its chemical composition by weight percentage is: C 0.03, Si 0.15, Fe 1.0, Cr 20.0, Mo 8.0, Ni balance. Preset NiCrBSiFe alloy powder on the surface of the deposition transition layer again, the thickness of the preset alloy powder is 1.2mm, and its chemical composition is by weight percentage: C 0.3, B 2.0, Si 2.0, Cr 15.0, Fe 6.0, Ni balance, adopt TFL-6000 continuous wave CO 2 The laser is used for laser cladding treatment, the laser output power is 2.0kW, the broadband spot size is 6mm×1mm, the laser beam s...

Embodiment 2

[0068] Using Monel400 alloy as the base material, its chemical composition is: C 0.4, Fe 0.8, Mn 3, Si 0.6, Cu 38.0, Ni balance. Micro-arc spark deposition of NiCrMoFe alloy on the surface of the above-mentioned Monel alloy substrate, the pulse frequency is 350Hz, the deposition voltage is 100V, the protective gas argon flow rate is 25L / min, and the thickness of the deposited transition layer is 110μm; the electrode material used is a special Ni-based alloy electrode , its chemical composition by weight percentage is: C 0.1, Si 0.5, Fe 5.0, Cr 23, Mo 10, Ni balance. Preset NiCrBSiFe alloy powder on the surface of the deposition transition layer again, the thickness of the preset alloy powder is 1.5mm, and its chemical composition is by weight percentage: C 1.5, B 5.0, Si 6.0, Cr 20.0, Fe0.8, Ni surplus, Using TFL-6000 continuous wave CO 2 The laser is used for laser cladding treatment, the laser output power is 6.0kW, the broadband spot size is 6mm×2mm, the laser beam scannin...

Embodiment 3

[0070] Using Monel400 alloy as the base material, its chemical composition is: C 0.2, Fe 1.5, Mn 2, Si 0.4, Cu 32.0, Ni balance. Micro-arc spark deposition of NiCrMoFe alloy on the surface of the above-mentioned Monel alloy substrate, the pulse frequency is 200Hz, the deposition voltage is 90V, the protective gas argon flow rate is 30L / min, and the thickness of the deposited transition layer is 120μm; the electrode material used is a special Ni-based alloy electrode , its chemical composition by weight percentage is: C 0.06, Si 0.3, Fe 2.0, Cr 21, Mo 9, Ni balance. Preset NiCrBSiFe alloy powder on the surface of the deposition transition layer again, the thickness of the preset alloy powder is 0.7mm, and its chemical composition is by weight percentage: C 0.9, B 3.0, Si 4.0, Cr 18.0, Fe 3, Ni balance, adopt TFL-6000 continuous wave CO 2 The laser is used for laser cladding treatment, the laser output power is 3.0kW, the broadband spot size is 10mm×2mm, the laser beam scanning...

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Abstract

The invention discloses a compound process method for preparing a laser modified layer on the surface of a monel alloy. An alloy transition layer is prepared on the surface of the monel alloy by using a micro-arc spark deposition process; and laser cladding treatment is performed on the alloy transition layer. In a micro-arc spark deposition material, a special NiCrMoFe alloy electrode is adopted; process parameters comprise a pulse frequency of between 150 and 350 Hz, deposition voltage of between 60 and 100 V, argon serving as protection gas, and a flow speed of between 10 and 30 L / min; a laser cladding material is NiCrBSiFe alloy powder; laser radiation process parameters comprise laser output power of between 2.0 and 6.0 Kw, broadband light spot of (6-10)mm*(1-2.0) mm and laser beam scanning speed of between 2.0 and 20 mm / s; the thickness of preset alloy powder is between 0.7 and 1.5 mm; and the thickness of the obtained modified layer is between 0.7 and 1.3 mm. The modified layer has the advantages of no crack, no air hole, high hardness, high quality and the like and is suitable for popularization and application.

Description

technical field [0001] The invention relates to a compound process method for preparing a surface modification layer on the surface of Monel alloy by using micro-arc spark deposition and laser cladding technology in the valve industry, and belongs to the technical field of metal material surface engineering. Background technique [0002] Valves are one of the important components of the equipment manufacturing industry and the main control components in fluid delivery systems. The quality and performance of valves directly affect the safety production, economic benefits and long-term development of various departments. In coal chemical industry, metallurgy, petroleum, power station, chemical industry, shipbuilding, long-distance pipeline, nuclear industry, aerospace and various low-temperature engineering industries, all kinds of valves are widely used, but because the pipeline often contains a large amount of solid particles and liquid Corrosive medium, and in the long-ter...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C23C24/10
Inventor 张春华齐麟张松郝玉喜王茂才王东生
Owner 南通集智知识产权服务有限公司