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

Hot-rolled wire rod for 70-kilogram-level welding wire and production method thereof

A technology of hot-rolled wire rod and production method is applied in the field of metallurgy to achieve the effects of saving production cost, improving toughness and plasticity, and high and low temperature impact toughness performance.

Active Publication Date: 2020-04-10
HEBEI IRON AND STEEL
View PDF4 Cites 5 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In view of the need for annealing treatment in the production process of the existing hot-rolled wire rod for 70 kg high-strength welding wire, and the problems that the low-temperature impact energy, area shrinkage and elongation after fracture of the existing hot-rolled wire rod for welding wire need to be further improved, this paper The invention provides a hot-rolled wire rod for 70 kg welding wire and its production method

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
  • Hot-rolled wire rod for 70-kilogram-level welding wire and production method thereof
  • Hot-rolled wire rod for 70-kilogram-level welding wire and production method thereof
  • Hot-rolled wire rod for 70-kilogram-level welding wire and production method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0038] The embodiment of the present invention provides a kind of hot-rolled wire rod for 70 kilograms welding wire, and its chemical composition is:

[0039] C: 0.06%, Si: 0.60%, Mn: 1.40%, Ni: 0.50%, Mo: 0.30%, Cr: 0.05%, V: 0.05%, Ti: 0.1%, Al: 0.015%, Zr: 0.05%, P: 0.01%, S: 0.002%, As: 0.0011%, Sb: 0.003%, B: 0.005%, Se: 0.002%, Ca: 0.01%, Pb: 0.002%, Bi: 0.003%, Te: 0.005%, O: 0.005%, H: 0.0001%, and the balance is Fe.

[0040] The production method of the hot-rolled wire rod for above-mentioned 70 kg grade welding wire is as follows:

[0041] Step 1. Using steel scrap as raw material, after electric arc furnace smelting, LF refining, and continuous casting, a continuous casting billet with a specification of 165×165mm is obtained; wherein, in the continuous casting process, electromagnetic stirring of the crystallizer and electromagnetic stirring of the solidification end are used , where the electromagnetic stirring at the solidification end is equipped with two elec...

Embodiment 2

[0046] The embodiment of the present invention provides a kind of hot-rolled wire rod for 70 kilograms welding wire, and its chemical composition is:

[0047] C: 0.010%, Si: 0.35%, Mn: 1.47%, Ni: 0.70%, Mo: 0.15%, Cr: 0.20%, V: 0.01%, Ti: 0.05%, Al: 0.025%, Zr: 0.03%, P: 0.007%, S: 0.01%, As: 0.01%, Sb: 0.0032%, B: 0.002%, Se: 0.001%, Ca: 0.001%, Pb: 0.002%, Bi: 0.001%, Te: 0.003%, O: 0.0041%, H: 0.000045%, balance Fe.

[0048] The production method of the hot-rolled wire rod for above-mentioned 70 kg grade welding wire is as follows:

[0049] Step 1. Using steel scrap as raw material, after electric arc furnace smelting, LF refining, and continuous casting, a continuous casting billet with a specification of 165×165mm is obtained; wherein, in the continuous casting process, electromagnetic stirring of the crystallizer and electromagnetic stirring of the solidification end are used , where the electromagnetic stirring at the solidification end is equipped with two electromag...

Embodiment 3

[0054] The embodiment of the present invention provides a kind of hot-rolled wire rod for 70 kilograms welding wire, and its chemical composition is:

[0055] C: 0.072%, Si: 0.46%, Mn: 1.60%, Ni: 0.67%, Mo: 0.17%, Cr: 0.07%, V: 0.012%, Ti: 0.05%, Al: 0.015%, Zr: 0.032%, P: 0.009%, S: 0.0031%, As: 0.0021%, Sb: 0.01%, B: 0.003%, Se: 0.01%, Ca: 0.0013%, Pb: 0.01%, Bi: 0.001%, Te: 0.002%, O: 0.0025%, H: 0.00006%; the balance is Fe.

[0056] The production method of the hot-rolled wire rod for above-mentioned 70 kg grade welding wire is as follows:

[0057] Step 1. Using steel scrap as raw material, after electric arc furnace smelting, LF refining, and continuous casting, a continuous casting billet with a specification of 155×155 mm is obtained; wherein, in the continuous casting process, electromagnetic stirring of the crystallizer and electromagnetic stirring of the solidification end are used , where the electromagnetic stirring at the solidification end is equipped with two ...

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 relates to the technical field of metallurgy, and particularly discloses a hot-rolled wire rod for a 70-kilogram-level welding wire and a production method thereof. The hot-rolled wire rod comprises the following components: C, Si, Mn, Ni, Mo, Cr, V, Ti, Al, Zr and the balance of Fe and inevitable impurities, and the hot-rolled wire rod for the 70kg-grade welding wire is prepared through the procedures of steelmaking, continuous casting, heating, rolling, spinning and cooling. Component adjustment and process optimization are carried out, the prepared hot-rolled wire rod meets the requirements of a wire rod for a 70-kilogram-level welding wire, and a ferrite and pearlitic structure suitable for drawing is obtained; the strength, the toughness and the plasticity of the wire rod are good; and therefore the annealing procedure can be omitted in the welding wire machining process, deposited metal obtained after welding is moderate in strength, good in low-temperature impact energy and high in production efficiency, and the wide application prospect is achieved.

Description

technical field [0001] The invention relates to the technical field of metallurgy, in particular to a hot-rolled wire rod for 70-kilogram welding wire and a production method thereof. Background technique [0002] With the rapid development of lightweight mechanical equipment and high-strength steel, the demand for high-strength welding wire steel is also increasing. High-strength welding wire is a kind of low-carbon alloy steel wire, which is made of hot-rolled wire rod through multi-pass cold working and drawing. Due to the large amount of deformation in the cold drawing process, it is required that the hot-rolled wire rod for welding wire must have good mechanical properties. To meet the requirements for the drawing process, mechanical properties and welding quality of the welding wire. [0003] Generally, the higher the strength level of the welding wire, the more alloying elements it contains in the matrix, especially the more precious metal elements and supercooled au...

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): C22C38/02C22C38/04C22C38/06C22C38/44C22C38/46C22C38/50C22C38/58C22C38/60C21D8/06
CPCC21D8/065C21D2211/005C21D2211/009C22C38/002C22C38/02C22C38/04C22C38/06C22C38/44C22C38/46C22C38/50C22C38/58C22C38/60
Inventor 张贺佳杨斌孔超王全利杜立华贾元海
Owner HEBEI IRON AND STEEL
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