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

Method for repairing abraded hot roll through submerged arc bead welding and laser cladding

A laser cladding and submerged arc surfacing technology, applied in the direction of roll, metal rolling, metal rolling, etc., can solve the problems of low cladding efficiency and high cost of laser cladding materials, and achieve not easy cracking and good wear resistance. The effect of high resistance and fatigue resistance, high bonding strength

Active Publication Date: 2016-02-03
BEIJING UNIV OF TECH
View PDF8 Cites 35 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The main disadvantages of laser repair are the high cost of laser cladding materials and low cladding efficiency

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 repairing abraded hot roll through submerged arc bead welding and laser cladding
  • Method for repairing abraded hot roll through submerged arc bead welding and laser cladding

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] a roll diameter The submerged arc surfacing and laser cladding repair method of the worn hot roll, the base material of the roll is 42CrMo, including the following process steps: first use the lathe to turn the worn surface of the worn hot roll, remove the surface cracks and holes, and then pile on the surface of the roll Weld a high-strength and tough transition layer, heat-treat the hot roll repaired by surfacing welding, and process it to a diameter less than 1.2mm of the finished product, and then laser clad a layer of high-temperature wear-resistant working layer on the surfacing surface by laser cladding and synchronous powder feeding. Finally, it is finished to the specified size and precision. Its specific process steps are:

[0026] ① Turn the worn surface of the worn hot roll, and remove 5mm on one side, remove the fatigue layer and cracks on the surface, and obtain a smooth roll surface;

[0027] ② There is no crack on the surface of the roller through mag...

Embodiment 2

[0035] a roll diameter The submerged arc surfacing and laser cladding repair method of the worn hot roll, the roll parent material is 30Mn5, including the following process steps: first use the lathe to process the worn surface of the worn hot roll, remove the surface cracks and holes, and then pile on the roll surface Weld a high-strength and tough transition layer, heat-treat the hot roll repaired by surfacing welding, and then process it to a diameter smaller than 1.6mm, and then laser clad a layer of high-temperature wear-resistant working layer on the surfacing surface by laser cladding synchronous powder feeding , and finally finished to the specified size and accuracy. Its specific process steps are:

[0036] ① Turn the worn surface of the worn hot roll, and remove 4mm on one side, remove the fatigue layer and cracks on the surface, and obtain a smooth roll surface;

[0037] ②There are cracks in the magnetic particle inspection of the roll surface, and there are no c...

Embodiment 3

[0045] a roll diameter The submerged arc surfacing and laser cladding repair method of the worn hot roll, the base material of the roll is 21CrMoV12-1, including the following process steps: first use the lathe to turn the worn surface of the worn hot roll, remove the surface cracks and holes, and then remove the surface cracks and holes on the roll The surface is surfacing with a high-strength and tough transition layer, and the hot roll repaired by surfacing is heat-treated, and then processed to a diameter of 1.5mm smaller than the finished product, and then a layer of high-temperature wear-resistant material is laser clad on the surfacing surface by laser cladding synchronous powder feeding. The working layer is finally finished to the specified size and accuracy. Its specific process steps are:

[0046] ① Turn the worn surface of the worn hot roll, and remove 6mm on one side, remove the fatigue layer and cracks on the surface, and obtain a smooth roll surface;

[0047]...

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
microhardnessaaaaaaaaaa
microhardnessaaaaaaaaaa
microhardnessaaaaaaaaaa
Login to View More

Abstract

The invention relates to a method for repairing an abraded hot roll through submerged arc bead welding and laser cladding and belongs to the technical field of surface treatment. The method comprises the following technological steps that firstly, the abraded surface of the abraded hot roll is machined through a lathe to remove surface cracks and a fatigue layer; secondly, a high-toughness transition layer is arranged on the roll surface through bead welding, and the hot roll repaired through bead welding is subjected to heat treatment and machined to be 1.2-1.6 mm smaller than a finished product in diameter; thirdly, a high-temperature abrasion resisting working layer with the thickness of 0.7-1.0 mm is arranged on the surface, obtained through bead welding, of the roll in a laser cladding manner through a laser cladding synchronous powder feeding method; and finally, finish machining is carried out until the regulated dimension and precision are achieved. According to the method, the bead welding technology and laser cladding technology are organically combined; and compared with previous production technologies and methods, the production cost is reduced, the repair risk of the roll is small, and the service life of the repaired roll is long.

Description

technical field [0001] The invention discloses a method for submerged arc surfacing and laser cladding repair of wearing parts, in particular to a method for repairing worn hot rolls by submerged arc surfacing and laser cladding, and belongs to the technical field of surface treatment. Background technique [0002] The hot roll is a key tool in the steel rolling production process. It is subjected to mechanical load, thermal load and friction during work. The surface of the hot roll should have good wear resistance and heat resistance as well as good fracture resistance, which directly determines the heat The quality of rolled products, and the length of the roll life cycle is closely related to the cost of the product. Therefore, the research on improving the wear resistance of the hot roll surface has attracted extensive attention at home and abroad, and the material of the hot roll has been continuously improved and developed. In order to improve the surface wear resista...

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): B23P6/00B21B27/00
CPCB21B27/00B23P6/00
Inventor 雷永平王开明李玉龙苏振清李辉符寒光杨勇维
Owner BEIJING UNIV OF TECH
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