A cobalt-based alloy powder for repairing the nozzle ring of an internal combustion engine supercharger

A technology of cobalt-based alloy and supercharger, which is applied in the direction of metal material coating process and coating to achieve the effect of increasing anti-oxidation, high hardness and strength, and high hardness

Active Publication Date: 2017-03-08
上海大陆天瑞激光表面工程有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

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Method used

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Examples

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Effect test

example 1

[0034] Laser cladding is carried out on the nozzle ring of the internal combustion engine supercharger (the material is 1Cr18Ni9Ti) with an all-solid-state 1KW laser. The mass percent of alloying elements in the designed cobalt-based alloy powder is .

[0035] C: 1.1%; Cr: 30%; W: 5%; Ni: 4%; Mo: 7%; Mn: 0.7%; Si: 0.3%.

[0036] Ce: 0.2%; Co: balance.

[0037] The cladding process parameters are: power: 1000-1200W, spot diameter: 1-3mm, scanning speed: 4-20mm / s, powder thickness: 0.3-1.0mm.

example 2

[0039] Laser cladding is carried out on the nozzle ring of the internal combustion engine supercharger (the material is 1Cr18Ni9Ti) with an all-solid-state 1KW laser. The mass percentages of the designed cobalt-based alloy powder alloy elements are: C: 1.3%; Cr: 29%; W: 4%; Ni: 5%; Mo: 6%; Mn: 0.6%; Si: 0.4%; Ce: 0.3%; Co: balance.

[0040] The cladding process parameters are: power: 1000-1200W, spot diameter: 1-3mm, scanning speed: 4-20mm / s, powder thickness: 0.3-1.0mm.

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Abstract

The invention discloses a cobalt base alloy powder for repairing a supercharger nozzle ring of an internal combustion engine. The cobalt base alloy powder comprises Cr, W, Co, Zr and Ce and is characterized by also comprising Ni, Mn, Si and C, wherein all the components are shown as follows in percentage by mass: 1.0-1.4% of C, 28-34% of Cr, 3-7% of W, 2-6% of Ni, 4-8% of Mo, 0.5-0.9% of Mn, 0.2-0.6% of Si, 0.2-0.4% of Ce and the balance of Co. The cobalt base alloy powder is cladded on an invalid supercharger nozzle ring of the internal combustion engine in a laser cladding way to form a cobalt base alloy cladding layer with oxidization resistance, corrosion resistance, erosive wear resistance, relatively high strength and excellent cladding performance, so that the technical problem that the supercharger nozzle ring of the internal combustion engine cannot be repaired is solved.

Description

technical field [0001] The invention relates to an alloy powder material suitable for laser cladding, in particular to a cobalt-based alloy powder used for repairing the nozzle ring of an internal combustion engine supercharger, which belongs to C23C24 / 10(2006.01)I in the IPC International Patent Classification Table technology field. Background technique [0002] The supercharger is an important equipment for diesel locomotives to increase power and reduce energy consumption. In the supercharger, the nozzle ring is a key component. Since the nozzle ring has been continuously working at a high temperature of 650-700°C for a long time, it is subjected to oxidation, corrosion, cold and heat fatigue and thermal shock. Therefore, cracks are prone to appear on the exhaust side of the guard ring blade in the nozzle ring. Once the nozzle ring is cracked, it cannot be used anymore and needs to be replaced. [0003] With the development needs of my country's railway industry, diese...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C23C24/10C22C19/07
Inventor 朴新欣陈江张静波
Owner 上海大陆天瑞激光表面工程有限公司
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