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

Smelting method of steel for low-silicon high-titanium welding wire

A smelting method, a high-titanium technology, is applied in the smelting field of low-silicon and high-titanium welding wire steel, which can solve the problems of serious nozzle nodules and poor surface quality of continuous casting slabs, reduce the amount of silicon returned and ensure the surface quality of slabs , to ensure the effect of pourability

Active Publication Date: 2015-01-14
INST OF RES OF IRON & STEEL JIANGSU PROVINCE
View PDF5 Cites 14 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Specifically, this process can realize narrow-range control of impurity elements, and can effectively solve the problems of serious nozzle nodules and poor surface quality of continuous casting slabs in the continuous casting process

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
  • Smelting method of steel for low-silicon high-titanium welding wire
  • Smelting method of steel for low-silicon high-titanium welding wire

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0016] The inventor of this case used the smelting method of the present invention to continuously produce 3 furnaces in a steelmaking workshop using continuous casting billets with a section of 140mm×140mm, including 110t electric furnace smelting process, ladle refining process and billet continuous casting process, and the pouring did not occur smoothly. The nodulation phenomenon, the specific process method is as follows:

[0017] 1) In the electric furnace smelting process, the charge structure includes molten iron and steel scrap, wherein the molten iron accounts for 65-80wt.% of the total charge; when the carbon content in the molten pool is 0.05-0.08wt.%, the phosphorus content Steel can only be tapped at ≥1630°C; when the tapping amount is 15-20wt.%, alloy and slag are added in the order of "aluminum ingot→silicon-manganese→low-carbon ferromanganese→nickel plate→lime", among which the amount of aluminum ingot added 1.0~1.2kg / t, the addition amount of silicon manganese...

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
Melt viscosityaaaaaaaaaa
Login to View More

Abstract

The invention discloses a smelting method of steel for a low-silicon high-titanium welding wire. The method comprises an electric furnace smelting procedure, a ladle refining procedure and a small square billet continuous-casting procedure. According to the method disclosed by the invention, 20%-80% by weight of steel ladle top slag after electric furnace tapping is stripped, synthetic slag and lime are added in a refining process to manufacture fresh slag, so that the silicon return amount of molten steel in the refining process is greatly reduced; the problem of nozzle blocking in a continuous-casting process can be effectively solved due to high cleanliness of the molten steel, and thus more than three furnaces are continuously poured smoothly; and the problem of surface quality of a casting billet can be solved by adopting special crystallizer protecting slag.

Description

technical field [0001] The invention belongs to the field of iron and steel metallurgy, and relates to a method for smelting steel for low-silicon and high-titanium welding wire. Specifically, it is a method that can realize narrow-range control of impurity elements, reduce the degree of nodules in continuous casting nozzles, and improve the surface of continuous casting slabs. The smelting method of high-quality low-silicon and high-titanium welding wire steel. Background technique [0002] In recent years, with the acceleration of my country's industrialization process, the degree of welding automation has been significantly improved. Welding wire has been widely used in manufacturing industries such as vehicle manufacturing, shipbuilding, engineering machinery, and bridges. In 2011, the consumption of welding wire in my country accounted for the total 59% of consumption. Welding wire steel must have good drawing performance and welding performance, so there are strict req...

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): C22C38/14C22C33/04C21C7/076C21C7/072B22D11/111B22D11/18
CPCB22D11/111B22D11/115C21C5/52C21C7/06C21C7/076C22C38/04C22C38/08C22C38/14C22C38/32Y02P10/20
Inventor 马建超张宇曹斌
Owner INST OF RES OF IRON & STEEL JIANGSU PROVINCE
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