Alloy powder material for Fe-based nonmagnetic cladding layer and cladding layer preparing method

A technology of alloy powder and cladding layer, applied in metal material coating process, metal processing equipment, welding/cutting medium/material, etc., to achieve the effect of support and strengthening, small splash and uniform structure

Inactive Publication Date: 2013-04-17
BEIJING UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] After searching, there is currently no patent report on the technology related to the preparation of iron-based alloy non-magnetic cladding layer by plasma arc surfacing welding (PTAW)

Method used

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  • Alloy powder material for Fe-based nonmagnetic cladding layer and cladding layer preparing method
  • Alloy powder material for Fe-based nonmagnetic cladding layer and cladding layer preparing method
  • Alloy powder material for Fe-based nonmagnetic cladding layer and cladding layer preparing method

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0036] According to the mass percentage of Fe-based multi-component alloy powder elements: Cr: 9wt.%; Mo: 19wt%; C: 2.0wt.%; B: 1.5wt.%; Si: 1wt.%; :margin. Plasma arc surfacing welding parameters used to prepare cladding layer: transferred arc voltage 29-31V; transferred arc current 90A; spraying distance 13mm; ion gas (Ar): 4-4.5L / h; powder feeding gas (Ar): 4-4.5 L / h; protective gas (Ar): 6.5-7L / h; powder feeding voltage: 6.3V.

Embodiment 2

[0038] According to the mass percentage of Fe-based multi-element alloy powder: Cr: 11wt.%; Mo: 21wt%; C: 2.3wt.%; B: 1.8wt.%; Si: 0.8wt.%; Fe: margin. Plasma arc surfacing welding parameters used to prepare cladding layer: transferred arc voltage 29-31V; transferred arc current 90A; spraying distance 13mm; ion gas (Ar): 4-4.5L / h; powder feeding gas (Ar): 4-4.5 L / h; protective gas (Ar): 6.5-7L / h; powder feeding voltage: 6.3V.

Embodiment 3

[0040]According to the mass percentage of Fe-based multi-element alloy powder: Cr: 13wt.%; Mo: 23wt%; C: 2.5wt.%; B: 2.0wt.%; Si: 0.5wt.%; Fe: margin. Plasma arc surfacing welding parameters used to prepare cladding layer: transferred arc voltage 29-31V; transferred arc current 90A; spraying distance 13mm; ion gas (Ar): 4-4.5L / h; powder feeding gas (Ar): 4-4.5 L / h; protective gas (Ar): 6.5-7L / h; powder feeding voltage: 6.3V.

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Abstract

The invention discloses an alloy powder material for a Fe-based nonmagnetic cladding layer and a cladding layer preparing method, and belongs to the field of surface coating. The alloy powder comprises reduction ferrous powder, electrolytic manganese powder, high carbon ferro-chrome, ferro-molybdenum, ferrosilicon, ferro-boron, chromium carbide and boron carbide, and comprises following elementary compositions: 5-20wt% of Cr, 15-30wt% of Mo, 1-4wt% of C, 0.5-3wt% of B, 0.1-1.5wt% of Si, 0-15wt% of Mn, and the balance Fe. The Fe-based multi-element alloy cladding layer is prepared by plasma arc overlaying technology. The prepared cladding layer is nonmagnetic, high in hardness, and less prone to cracking and generating other cladding defects.

Description

technical field [0001] The invention belongs to the field of surface coatings, and in particular relates to a multi-component alloy powder material for an iron-based non-magnetic cladding layer and a preparation method for the cladding layer. Background technique [0002] In mining, oil and gas drilling and other industrial fields, directional exploration technology is an indispensable and important part of the tunneling system. The harsh service conditions not only require the corresponding mechanical parts to have excellent wear resistance and corrosion resistance, but also meet the requirements of directional exploration. Requirements for non-magnetic properties of materials in exploration. At present, such structural components are generally made of non-magnetic materials such as austenitic stainless steel, non-magnetic steel, non-magnetic hard alloy, aluminum alloy, titanium alloy or copper alloy with low magnetic permeability. Its service life in the environment is se...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B23K35/30B23K10/00C23C4/06C23C4/131
Inventor 周正贺定勇姚海华蒋建敏赵秋颖崔丽王智慧李晓延
Owner BEIJING UNIV OF TECH
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