Powdered alloy material for Fe-based non-magnetic clad layer

A technology of alloy powder and cladding layer, which is applied in the field of multi-element alloy powder materials and preparation, to achieve the effects of small spatter, smooth and uniform surface, and uniform structure

Inactive Publication Date: 2015-07-01
BEIJING UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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  • Powdered alloy material for Fe-based non-magnetic clad layer
  • Powdered alloy material for Fe-based non-magnetic clad layer
  • Powdered alloy material for Fe-based non-magnetic clad layer

Examples

Experimental program
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Effect test

Embodiment 1

[0034] According to the mass percentage of Fe-based multi-element alloy powder: Cr: 6wt.%; Mo: 10wt%; C: 2.0wt.%; B: 1.5wt.%; W: 2.5wt.%; 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): 250L / h; powder feeding gas (Ar): 245 / h; shielding gas (Ar): 380L / h; Powder feeding voltage: 6.3V.

Embodiment 2

[0036] According to the mass percentage of Fe-based multi-element alloy powder: Cr:8wt.%; Mo:8wt%; C:1.5wt.%; B:1.8wt.%; W:2.8wt.%; Mn:6.8wt.%, Fe: margin. Plasma arc surfacing welding parameters used to prepare the cladding layer: transferred arc voltage 29-31V; transferred arc current 90A; spraying distance 13mm; ion gas (Ar): 260 / h; powder feeding gas (Ar): 260L / h; shielding gas (Ar): 400L / h; Powder feeding voltage: 6.3V.

Embodiment 3

[0038] According to the mass percentage of Fe-based multi-element alloy powder: Cr: 13wt.%; Mo: 6.5wt%; C: 1.8wt.%; B: 2.0wt.%; W: 4wt.%; 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): 270L / h; powder feeding gas (Ar): 270L / h; shielding gas (Ar): 420L / h; Powder feeding voltage: 6.3V.

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Abstract

The invention discloses a powdered alloy material for a Fe-based non-magnetic clad layer, and is applied to the surface coating field. The powder comprises reduced iron powder, electrolytic manganese powder, high-carbon ferro-chrome, ferromolybdenum, ferroboron, ferrotungsten, chromium carbide and boron carbide. The powdered alloy material comprises the following element contents: 6-18wt% of Cr, 5-10wt% of Mo, 2-5wt% of W, 0.5-2wt% of C, 0.5-3wt% of B, 0-15wt% of Mn and the balance of Fe. The powdered alloy material is subjected to a plasma arc surfacing process to prepare the Fe-based multi-element clad layer. The prepared clad layer is non-magnetic, has relatively high hardness, and is not likely to generate cracks or other cladding defects.

Description

technical field [0001] The invention belongs to the field of surface strengthening, and in particular relates to a multi-element alloy powder material for a non-magnet-based cladding layer and a preparation method thereof. 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. Using appropriate surface treatment technology to prepare a layer of non-magnetic protective coating on the surface of commonly used austenitic stainless steel and other non-magnetic parts is considered to solve the wear and corrosion problems of such parts, and to achieve surface strengthening and repair...

Claims

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Application Information

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IPC IPC(8): C22C38/38C22C38/32B22F1/00B23K10/02
Inventor 周正姚海华赵林艳王一鸣吴旭贺定勇杨诗綦
Owner BEIJING UNIV OF TECH
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