High-temperature-resistant oxidation coating nickel-based alloy powder for laser cladding

A technology of high-temperature oxidation resistance and laser cladding, which is applied in coating, metal material coating process, etc., can solve the problem of nickel-based alloy powder crack resistance, formability, process stability and composition uniformity, and cannot meet the process requirements. Requirements and other issues, to achieve fatigue resistance hardness and strength, improve grain boundary quality, increase the effect of oxidation resistance

Inactive Publication Date: 2019-10-15
扬州安泰威合金硬面科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to solve the shortcomings in the prior art, such as: although the nickel-based alloy powder of laser cladding can achieve certain technical effects on repairing specific equipment parts, it cannot meet the requirements due to its own process characteristics. And applicable to the process requirements of laser cladding of other specific substrates, especially the crack resistance, formability, process stability and composition uniformity of nickel-based alloy powder in the laser cladding layer must also be satisfied Requirements for the high temperature oxidation resistance of the coating

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] A nickel-based alloy powder with high temperature resistant oxidation coating for laser cladding, its chemical composition is: Cr: 23%; Mo: 14%; W: 5%; Fe: 7%; Co: 3%; V Mn: 0.8%; Si: 0.5%; Y2O3: 0.3%; La2O3: 0.3%; Ce: 0.3%; Ni: balance.

[0021] Its preparation method comprises the following processes:

[0022] In step 1, metals Ni, Cr, Mo, W, Co, V, Fe, Si, Mn and rare earth elements Y2O3, La2O3, and Ce are mixed according to the above weight percentages to prepare raw materials for making metal powders.

[0023] Step 2: Start the intermediate frequency, put in the metal to start smelting according to the requirements of the smelting process, and generally put in the metal that is easy to oxidize in the later stage of melting. The melting temperature is about 1400-1450°C.

[0024] Step 3: After all the metals in the furnace are melted in the furnace, slagging is performed to remove impurities in the molten metal.

[0025] Step 4: Then enter the refining period for ...

Embodiment 2

[0032] A nickel-based alloy powder with high temperature resistant oxidation coating for laser cladding, its chemical composition is: Cr: 24%; Mo: 15%; W: 7%; Fe: 8%; Co: 4%; V Mn: 1.2%; Si: 1.2%; Y2O3: 0.4%; Hf: 0.4%; Ce: 0.4%; Ni: balance.

[0033] Its preparation method comprises the following processes:

[0034] Step 1, the metal Ni, Cr, Mo, W, Co, V, Fe, Si, Mn and the rare earth elements Y2O3, La2O3, Ce are mixed according to the above weight percentage, and the raw materials for making metal powder are prepared.

[0035] Step 2: Start the intermediate frequency, put in the metal to start smelting according to the requirements of the smelting process, and generally put in the metal that is easy to oxidize in the later stage of melting. The melting temperature is about 1400-1450°C.

[0036] Step 3: After all the metals in the furnace are melted in the furnace, slagging is performed to remove impurities in the molten metal.

[0037] Step 4: Then enter the refining perio...

Embodiment 3

[0044] A nickel-based alloy powder with high temperature resistant oxidation coating for laser cladding, its chemical composition is as follows: Cr: 25%; Mo: 16%; W: 8%; Fe: 9%; Co: 5%; V Mn: 1.5%; Si: 1.8%; La2O3: 0.5%; Hf: 0.5%; Ce: 0.5%; Ni: balance.

[0045] Its preparation method comprises the following processes:

[0046] Step 1, the metal Ni, Cr, Mo, W, Co, V, Fe, Si, Mn and the rare earth elements Y2O3, La2O3, Ce are mixed according to the above weight percentage, and the raw materials for making metal powder are prepared.

[0047] Step 2: Start the intermediate frequency, put in the metal to start smelting according to the requirements of the smelting process, and generally put in the metal that is easy to oxidize in the later stage of melting. The melting temperature is about 1400-1450°C.

[0048] Step 3: After all the metals in the furnace are melted in the furnace, slagging is performed to remove impurities in the molten metal.

[0049] Step 4: Then enter the re...

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Abstract

The invention discloses a high-temperature-resistant oxidation coating nickel-based alloy powder for laser cladding, and the powder mainly comprises the following chemical components: Ni, Cr, Mo, W, Co, V, Fe, Si, Mn, and at least two of rare earth elements Y2O3 3, La2O3 3, Ce and Hf in proper amount. The invention fundamentally solves and improves the crack resistance, the formability, the process stability and the component uniformity of the alloy powder in a laser cladding layer, and meets the comprehensive performance requirements of a repair part on the cladding layer, such as oxidation resistance, corrosion resistance, wear resistance, fatigue resistance, moderate hardness and strength, certain conductivity and the like. The powder material can be used for laser cladding of the conductive roller part of the key equipment of a electrogalvanizing unit, solves the repairing problem of the conductive roller after corrosion and abrasion, and provides an effective and convenient methodfor successfully repairing the invalid conductive roller part in the metallurgical industry.

Description

technical field [0001] The invention relates to the technical field of laser cladding, in particular to a high-temperature oxidation-resistant nickel-based alloy powder for laser cladding. Background technique [0002] As an advanced remanufacturing technology, laser cladding has been rapidly promoted and widely used with the continuous improvement of laser power and stability. Laser cladding is an advanced remanufacturing technology that obtains a high-performance surface coating that is firmly bonded to the substrate on the metal surface without pores, cracks and other defects. It can clad high-melting point alloy materials on the surface of low-melting point substrates , High-performance surface coatings can also be prepared on low-cost substrates to replace a large number of advanced, high-performance overall materials, save precious metals, and reduce component costs. Laser cladding solves many problems that are difficult or impossible to process by conventional method...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C23C24/10C22C30/00B22F9/08
CPCB22F9/082B22F2009/0824C22C19/055C22C30/00C23C24/103
Inventor 杨庆松张凯居筱云
Owner 扬州安泰威合金硬面科技有限公司
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