Supercharge Your Innovation With Domain-Expert AI Agents!

Method for preparing Fe3Al/Cr3C2 composite coating through laser cladding

A technology of laser cladding and composite coating, which is applied in the direction of coating and metal material coating process to achieve the effect of dense structure, good wear resistance and high bonding strength

Active Publication Date: 2018-05-04
CENT IRON & STEEL RES INST
View PDF5 Cites 2 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The object of the present invention is to provide a kind of laser cladding preparation Fe 3 Al / Cr 3 C 2 Composite coating approach to address the Ni 3 Existing problems in the application of Al-based composite materials in the field of heavy-duty diesel engines

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Method for preparing Fe3Al/Cr3C2 composite coating through laser cladding
  • Method for preparing Fe3Al/Cr3C2 composite coating through laser cladding
  • Method for preparing Fe3Al/Cr3C2 composite coating through laser cladding

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] The surface of 45# steel is pretreated to remove the oil and impurities attached to the surface. in Fe 3 Add 35% Cr in Al powder 3 C 2 Powder, mechanically mixed evenly. Using the coaxial powder feeding method, the evenly mixed Fe 3 Al / Cr 3 C 2The powder is sent to the surface of the substrate. Fiber laser is used for laser cladding, the laser cladding power is 2100W, the scanning speed is 0.3m / min, the laser rectangular spot size is 5×5mm, the overlapping amount is 2mm, and the powder feeding amount is 25g / min. The protective gas for laser cladding is argon, with a flow rate of 25L / min. Fe obtained by laser cladding 3 Al / Cr 3 C 2 The thickness of the composite coating is about 1.5mm, the average hardness of the coating is 720HV, and the microstructure is as follows figure 1 As shown, the in situ self-generated iron and chromium complex carbides are distributed in the Fe 3 Al / Cr 3 C 2 in composite coatings. As a comparative method, the same laser cladding...

Embodiment 2

[0026] Pre-treat the surface of heat-resistant stainless steel to remove oil and impurities attached to the surface. in Fe 3 Add 25% Cr in Al powder 3 C 2 Powder, mechanically mixed evenly. Using the coaxial powder feeding method, the evenly mixed Fe 3 Al / Cr 3 C 2 The powder is sent to the surface of the substrate. Fiber laser is used for laser cladding, the laser cladding power is 1600W, the scanning speed is 0.18m / min, the diameter of the laser circular spot is 3mm, and the powder feeding amount is 20g / min. The protective gas for laser cladding is argon, with a flow rate of 20L / min. Fe obtained by laser cladding 3 Al / Cr 3 C 2 The thickness of the composite coating is 1.2mm, the average hardness of the coating is 630HV, and the microstructure is as follows image 3 shown. Under the dry friction conditions of load 8MPa and temperature 300℃ (surface friction, the grinding material is gray cast iron), laser cladding Fe 3 Al / Cr 3 C 2 The wear rate of the composite ...

Embodiment 3

[0028] The surface of vermicular graphite cast iron is pretreated to remove oil and impurities attached to the surface. in Fe 3 Add 15% Cr in Al powder 3 C 2 Powder, mechanically mixed evenly. Using side shaft powder feeding method, the mixed Fe 3 Al / Cr 3 C 2 The powder is sent to the surface of the substrate. Fiber laser is used for laser cladding, the laser cladding power is 1500W, the scanning speed is 0.36m / min, the laser rectangular spot size is 2.5×10mm, and the powder feeding volume is 15g / min. The protective gas for laser cladding is argon, with a flow rate of 15L / min. Fe obtained by laser cladding 3 Al / Cr 3 C 2 The thickness of the composite coating is 0.8mm, and the average hardness of the coating is 560HV. Under the condition of dry friction with a load of 5MPa (surface friction, the grinding material is gray cast iron), laser cladding Fe 3 Al / Cr 3 C 2 The wear rate of the composite coating is 0.47×10 ‐5 mm 3 / N m, with good wear resistance.

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

PropertyMeasurementUnit
particle diameteraaaaaaaaaa
diameteraaaaaaaaaa
lengthaaaaaaaaaa
Login to View More

Abstract

The invention discloses a method for preparing a Fe3Al / Cr3C2 composite coating through laser cladding, and belongs to the technical field of laser processing. The method comprises the steps that the surface of a steel material is pretreated so that oil dirt and impurities attached to the surface of the steel material can be removed; Cr3C2 powder is added in Fe3Al powder to be mixed evenly, and a Fe3Al and Cr3C2 mixture is obtained, wherein the content of Cr3C2 in the mixture ranges from 5 wt% to 40 wt%. The laser cladding technology is adopted for cladding of the mixture to the surface of thesteel materials so that the Fe3Al / Cr3C2 composite coating can be formed on the surface of the steel material through the mixture. The method has the beneficial effects that the obtained Fe3Al / Cr3C2 composite coating is dense in organization structure and has obvious abrasion resisting performance.

Description

technical field [0001] The invention belongs to the technical field of laser processing, in particular to a laser cladding preparation of Fe 3 Al / Cr 3 C 2 Composite coating method,. Background technique [0002] Heavy-duty diesel engines are developing in the direction of high mechanical load, high thermal load and low emissions. Technologies such as direct injection and supercharging have begun to be widely used, resulting in increasingly harsh working environments for thermal power machinery and high-temperature transmission friction parts inside diesel engines. The crankshaft , Exhaust valves, pistons and other key components fail due to corrosion, excessive wear, and burning, which seriously affects the service life of the components and the working stability of the diesel engine. Every year, the loss of the diesel engine due to the failure of the components is huge. According to the research on the operation status and failure mechanism of key parts of diesel engines...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Applications(China)
IPC IPC(8): C23C24/10
CPCC23C24/103
Inventor 赵琳田志凌韩伟李长海马成勇
Owner CENT IRON & STEEL RES INST
Features
  • R&D
  • Intellectual Property
  • Life Sciences
  • Materials
  • Tech Scout
Why Patsnap Eureka
  • Unparalleled Data Quality
  • Higher Quality Content
  • 60% Fewer Hallucinations
Social media
Patsnap Eureka Blog
Learn More

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2025 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com