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

Flux-cored wire used for backing build-up welding of semi-steel roll

A technology of flux-cored welding wire and semi-steel roll, applied in welding medium, welding equipment, welding/cutting medium/material, etc., can solve the problems of increasing the risk of roll breakage, the occurrence of large pores, and crack healing, and achieve the surfacing process. Excellent performance

Inactive Publication Date: 2012-04-25
CENT RES INST OF BUILDING & CONSTR CO LTD MCC GRP +1
View PDF3 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Once cracks appear in the bottom layer of surfacing welding, the crack will expand to the inside of the semi-steel roll, increasing the risk of roll breakage, and if the surfacing welding is continued on the bottom layer with cracks, not only the crack cannot be healed, but also the impurities contained in the crack Also results in a large number of porosity in the next overlay

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
  • Flux-cored wire used for backing build-up welding of semi-steel roll
  • Flux-cored wire used for backing build-up welding of semi-steel roll

Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0025] 1. Select an ultra-low carbon steel strip with a thickness of 0.6mm and a width of 14mm, and roll it into a U shape, using 5g of metal chromium, 10g of metal manganese, 5g of metal molybdenum, 2g of ferrosilicon, 10g of fluoride, 4g of ferrovanadium, and ferrotitanium 3g and 61g of iron powder are fully mixed and put into the U-shaped groove, the filling rate is 29%. After closing and gradually reducing the diameter, the final diameter is φ2.4mm.

[0026] 2. Select an ultra-low carbon steel strip with a thickness of 0.6mm and a width of 14mm, and roll it into a U shape, using 3g of metal chromium, 6g of metal manganese, 3g of metal molybdenum, 2g of ferrosilicon, 8g of fluoride, 5g of ferrovanadium, and ferrotitanium 4g and 69g of iron powder are fully mixed and then put into the U-shaped tank with a filling rate of 30%. After closing and gradually reducing the diameter, the final diameter is φ3.2mm.

[0027] 3. Select an ultra-low carbon steel strip with a thickness of...

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
diameteraaaaaaaaaa
thicknessaaaaaaaaaa
widthaaaaaaaaaa
Login to View More

Abstract

The invention discloses a flux-cored wire used for backing build-up welding of a semi-steel roll, and relates to the welding technology of material process engineering. The flux core comprises the following substances in percentage by weight: 2 to 10 percent of chromium metal, 5 to 11 percent of manganese metal, 2 to 10 percent of molybdenum metal, 1 to 5 percent of silicon iron, 3 to 15 percent of fluoride, 0.5 to 10 percent of ferrovanadium, 0 to 5 percent of ferrotitanium, and the balance of iron powder. The flux-cored wire of the invention solves the difficult problem that the semi-steel roll has poor weldability, has excellent build-up welding process performance, has good metallurgical compatibility with a build-up welding material at a working layer of the semi-steel roll, and can be widely applied to the build-up welding of the semi-steel roll.

Description

Technical field: [0001] The invention belongs to the welding field of material processing engineering, and the invention is used for bottoming and surfacing welding of semi-steel rolls. Background technique: [0002] The carbon content of semi-steel rolls is usually in the range of 1.0 to 2.1%, and contains Si, Mn, Cr, Ni, Mo, etc. and various alloying elements. Rolling and intermediate rolling stands, hot strip continuous rolling mill rough rolling and finishing rolling back-up rolls and other occasions. Because the carbon content of semi-steel rolls is extremely high and contains more alloy elements, the hardenability of semi-steel rolls is strong, the weldability is poor, and the repair of surfacing welding is extremely difficult. It is called Adamite roll abroad, and it is generally considered that it cannot be repaired by surfacing. [0003] The key to developing semi-steel roll surfacing repair materials is to design the base layer material to solve the weldability p...

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): B23K35/30
Inventor 张迪刘景凤白波王英杰宋世旭眭向荣沈亚威王川
Owner CENT RES INST OF BUILDING & CONSTR CO LTD MCC GRP
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