Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

High hardness material laser cladding process method for roller work surface

A technology of laser cladding and process method, which is applied in the direction of metal material coating process, coating, etc., can solve the problems of coarse grain structure, poor composition uniformity, and easy cracking of the welding layer, and achieve a dense and fine structure of the welding layer. The effects of modernization, high production efficiency and low labor intensity

Active Publication Date: 2015-04-08
SHENYANG SIASUN ROBOT & AUTOMATION
View PDF7 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Aiming at the problems of high energy consumption, coarse grain structure of the welding layer, poor composition uniformity, low hardness, easy cracking and falling off of the welding layer in the traditional roll surfacing repair process, the present invention provides a laser melting method for the working surface of the roll. The process method of covering high-hardness materials, adopting this process method to clad the alloy powder material with high hardness and good red hardness on the working surface of the roll in a large area and multi-layer, the repaired and prepared roll has a fine and dense welding layer structure, No cracks, inclusions and other quality defects, it is an important technical means for steel rolling enterprises to repair and rebuild rolls and reduce production costs

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
  • High hardness material laser cladding process method for roller work surface
  • High hardness material laser cladding process method for roller work surface
  • High hardness material laser cladding process method for roller work surface

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0037] The working surface of a cast steel roll made of 165CrNiMo was severely damaged, and the specification of the roll was The laser cladding repair treatment is carried out on the roller by adopting the technological method of the present invention, and all indexes after the repair meet the use standard of the roller on the machine. During processing:

[0038] 1) Laser cladding process parameters are: laser power 10KW, scanning speed 1000mm / min, spot size 15×1.5mm, overlap rate 50%, single-pass cladding thickness 3.5mm, cladding width 15mm, total cladding thickness is 35mm, the cladding material is iron-based alloy powder.

[0039] 2) The heat treatment process is as follows: roll preheating temperature 580±20°C, heating rate 120°C / hour, holding time 2 hours; heating and holding temperature 500±20°C during cladding; 380±20°C, 5 Hours of heat preservation, and then naturally cooled to room temperature.

[0040] In this embodiment, the hardness of the welding layer aft...

Embodiment 2

[0042] The difference from Example 1 is:

[0043] The material of a roll is 70Mn2, and the specification is Using the process of the present invention to carry out laser cladding repair on the working surface of the roller, during the processing:

[0044] 1) Laser cladding process parameters are: laser power 6KW, scanning speed 600mm / min, spot size 15×1.5mm, overlap rate 40%, single cladding thickness 2.5mm, cladding width 15mm, total cladding thickness is 25mm.

[0045] 2) The heat treatment process is as follows: roll preheating temperature 520±20°C, heating rate 150°C / hour, holding time 1 hour; heating and holding temperature 450±20°C during cladding; 380±20°C, 4 Hours of heat preservation, and then naturally cooled to room temperature.

[0046] In this example, after the roll is repaired by laser cladding, a good alloy welding layer is obtained, and the hardness of the welding layer reaches HRC61-64. Meet the use requirements of the roller machine.

[0047] Such as ...

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 sizeaaaaaaaaaa
hardnessaaaaaaaaaa
particle sizeaaaaaaaaaa
Login to View More

Abstract

The invention discloses a high hardness material laser cladding process method for a roller work surface, wherein a laser cladding technology is adopted to carry out multi-layer cladding of a high hardness alloy powder material on a roller work surface so as to form a high hardness wear-resistance alloy welding layer on the surface. With the present invention, laser cladding process stability, and uniformity and consistency of a welding layer structure and components can be fundamentally ensured, generation of cracks, pores, inclusions and other cladding quality defects can be avoided, a heat affected zone of the matrix can be reduced, a dilution rate can be reduced, and the alloy welding layer with characteristics of firm metallurgy bonding, dense grain refining, high hardness, high wear resistance and high impact load bearing can be finally obtained, wherein the welding layer hardness is more than HRC 55. In addition, after the roller is subjected to rolling use on the machine after laser cladding repair, the total measured steel amount is increased by more than 2.2 times, roller consumption is reduced by 30-40%, and economic benefits are significant.

Description

technical field [0001] The invention belongs to the technical field of material surface engineering, and specifically relates to a laser cladding process technology, in particular to a process method for laser cladding of high-hardness materials on the working face of a roll. area of ​​multilayer cladding. Background technique [0002] The roll is a tool for plastically deforming (rolled material) metal. As a key spare part of the rolling mill, it consumes a lot in the rolling process, and is an important consumable part that determines the efficiency of the rolling mill and the quality and output of the rolled material. When the roll is working, it bears various dynamic and static loads and cyclical stresses, resulting in serious damage to the working surface of the roll and even scrapping, which makes the production cost of the steel rolling enterprise rise sharply. [0003] In recent years, China's iron and steel industry has grown rapidly at an annual rate of 20% to 30%...

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 Patents(China)
IPC IPC(8): C23C24/10
Inventor 于恩洪张翼飞罗勇贾吉庆
Owner SHENYANG SIASUN ROBOT & AUTOMATION
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap 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