Eureka AIR delivers breakthrough ideas for toughest innovation challenges, trusted by R&D personnel around the world.

Method for carrying out laser cladding to form wear-resistant and impact-resistant coating layer on cast iron surface

A technology of laser cladding and impact-resistant layer, which is applied in the direction of coating, metal material coating process, etc., can solve the problems of pores and slag inclusions, and achieve the effects of reducing pores, good metallurgical bonding, and reducing carbon content

Active Publication Date: 2018-06-08
CHANGCHUN UNIV OF SCI & TECH
View PDF7 Cites 2 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The technical solution of the present invention: In order to solve the problems of pores and slag inclusions in the laser cladding process of cast iron materials, a method of laser cladding wear-resistant and impact-resistant coating on the surface of cast iron is provided to achieve no pores and slag inclusions, high wear resistance and impact resistance Preparation of the protective coating

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 carrying out laser cladding to form wear-resistant and impact-resistant coating layer on cast iron surface
  • Method for carrying out laser cladding to form wear-resistant and impact-resistant coating layer on cast iron surface
  • Method for carrying out laser cladding to form wear-resistant and impact-resistant coating layer on cast iron surface

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0050] In this embodiment, vermicular graphite cast iron is used as the matrix, and the base layer material is nickel-based alloy powder. The chemical composition (mass percentage of each element) is: C: 0.02%, Si: 0.1%, Mn: 0.4%, Cr: 15.5%, Co : 2.0%, Mo: 15.5%, W: 3.8%, Nb: 0.31%, Fe: 0.7%, Ni: the balance; the wear-resistant and impact-resistant layer material is iron-based alloy powder, and the chemical composition (mass percentage of each element) is : C: 0.30%, Si: 3.5%, Cr: 10.5%, B: 2.0%, Fe: 10.0%, Ni: balance;

[0051] The specific implementation steps are as follows:

[0052] (1) Dry the nickel-based alloy powder and the iron-based alloy powder in a vacuum oven at 85° C. for two hours after weighing;

[0053] (2) grinding the surface of the vermicular graphite cast iron to be treated with sandpaper for roughening, and then cleaning the oil stain with acetone for use;

[0054] (3) Coat the blackened coating for laser quenching on the surface of vermicular graphite ...

Embodiment 2

[0058] In this embodiment, gray cast iron is used as the matrix, and the base layer material is nickel-based alloy powder. The chemical composition (mass percentage of each element) is: C: 0.025%, Si: 0.12%, Mn: 0.43%, Cr: 16%, Co: 2.4%, Mo: 16%, W: 4.2%, Nb: 0.34%, Fe: 0.75%, Ni: the balance; the wear-resistant and impact-resistant layer material is iron-based alloy powder, and the chemical composition (mass percentage of each element) is: C: 0.32%, Si: 3.9%, Cr: 11, B: 2.3%, Fe: 10.5%, Ni: balance;

[0059] The specific implementation steps are as follows:

[0060] (1) Weigh the nickel-based alloy powder and the cobalt-based alloy powder and dry them in a vacuum oven at 80°C for two hours;

[0061] (2) Grinding the surface of the gray cast iron with sandpaper and carrying out roughening treatment, then cleaning the greasy dirt with acetone for use;

[0062] (3) Coat the blackened coating for laser quenching on the surface of gray cast iron, and then carry out laser quenchi...

Embodiment 3

[0066] In this embodiment, nodular cast iron is used as the matrix, and the base layer material is nickel-based alloy powder. The chemical composition (mass percentage of each element) is: C: 0.03%, Si: 0.14%, Mn: 0.46%, Cr: 16.5%, Co: 2.8%, Mo: 16.5%, W: 4.6%, Nb: 0.37%, Fe: 0.8%, Ni: the balance; the material of the wear-resistant and impact-resistant layer is iron-based alloy powder. The chemical composition (mass percentage of each element) is: C : 0.34%, Si: 4.3%, Cr: 11.5%, B: 2.6%, Fe: 11.0%, Ni: balance;

[0067] The specific implementation steps are as follows:

[0068] (1) After weighing the nickel-based alloy powder and the iron-based alloy powder, dry them in a vacuum oven at 90°C for two hours;

[0069] (2) Polish the surface of the nodular cast iron with sandpaper and carry out roughening treatment, then use acetone to clean the greasy dirt for later use;

[0070] (3) Coat the blackened coating for laser quenching on the surface of ductile iron after mechanical...

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

No PUM Login to View More

Abstract

The invention discloses a method for carrying out laser cladding to form a wear-resistant and impact-resistant coating layer on a cast iron surface. The method comprises the following steps of (1) drying metal powder for cladding at a drying temperature of 80-90 DEG C for 90-120 min; (2) polishing the machined cast iron surface by virtue of abrasive paper and carrying out roughening treatment, andthen removing oil stain by virtue of acetone for the future use; (3) coating the machined cast iron surface with a blackening coating material for laser quenching, and then carrying out laser quenching treatment; (4) after the laser quenching treatment is concluded, carrying out coaxial powder feeding and laser cladding to form a metal alloy prime coating layer on the formed laser quenching layer; and (5) carrying out coaxial powder feeding and laser cladding again to form the metal alloy wear-resistant and impact-resistant layer on the formed metal alloy prime coating layer.

Description

technical field [0001] The invention belongs to the field of laser processing, and relates to a method for laser cladding a wear-resistant and impact-resistant coating on the surface of cast iron. Background technique [0002] Cast iron material refers to the general name of the alloy composed of iron, carbon and silicon, which has the characteristics of good casting performance, energy saving and easy recycling. According to the state and form of carbon in cast iron, cast iron can be divided into: cementite white cast iron, flake graphite gray cast iron, group floc graphite malleable cast iron, spherical nodular cast iron, worm vermicular cast iron and adding Alloy iron castings with appropriate amount of alloying elements. At present, cast iron materials are widely used in heavy industries such as machining, automobiles, ships, and petrochemicals because of their excellent performance. However, in the working environment of the above fields, the cast iron parts used for ...

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
IPC IPC(8): C23C24/10C21D1/09C23F17/00C22C19/05
CPCC21D1/09C22C19/056C23C24/103C23F17/00
Inventor 石岩李云峰刘佳陈奎明倪聪
Owner CHANGCHUN UNIV OF SCI & TECH
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Eureka Blog
Learn More
PatSnap group products

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

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com