Slag system for ingot drawing electroslag remelting superaustenitic stainless steel

A technology of austenitic stainless steel and electroslag remelting, which is applied in the field of special alloy refining, can solve problems such as leakage, tearing, and low yield of steel ingots, and achieve the effects of reducing pollution, avoiding slag leakage, and smooth surface

Inactive Publication Date: 2014-02-05
LUOYANG SUNRUI SPECIAL EQUIP
View PDF4 Cites 15 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] ①Using the traditional fixed electroslag remelting production, one steel ingot is remelted at a time, the amount of head and tail removal is large, and the yield of the steel ingot is low
And when producing small cross-section steel ingots, the ratio of remelting speed to the diameter of electroslag steel ingots is as low as 0.65-0.75, resulting in low production efficiency and increased smelting costs
[0004] ②The above problems can be solved by adopting T-shaped crystallizer to draw ingots for electroslag remelting. However, the design of the slag system is often unreasonable, which is mainly manifested in: the viscosity of

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
  • Slag system for ingot drawing electroslag remelting superaustenitic stainless steel
  • Slag system for ingot drawing electroslag remelting superaustenitic stainless steel

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 2、3

[0045] The five-element slag system of the present invention is used for electroslag remelting of high-molybdenum nitrogen-containing super austenitic stainless steel ingot drawing, and the composition and weight percentage of the slag system are shown in Table 2:

[0046] Table 2 Composition and composition of slag system

[0047] Example 2 Example 3 CaF 2 40 55 Al 2 o 3 25 17 CaO 25 20 MgO 2 3 SiO 2 8 5

[0048] Implementation steps are the same as in Example 1.

[0049] Effect comparison

[0050] Specifications of electroslag steel ingot: 200mm×200mm×9000mm, weight 2800kg, cutting head and tail is 600mm in total, material utilization rate is 93%. According to the traditional fixed electroslag remelting process, the material utilization rate is generally 85%, and it is difficult to melt a 200mm×200mm×9000mm steel ingot.

[0051] The electrode melting rate of the new process is 400kg / hour, while the melting rate 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

No PUM Login to view more

Abstract

The invention belongs to the technical field of special alloy refining, and discloses a slag system for ingot drawing electroslag remelting superaustenitic stainless steel. The slag system for ingot drawing electroslag remelting superaustenitic stainless steel adopts a five-element slag system and is characterized in that the five-element slag system comprises the following components in percentage by weight: 40-55% of CaF2, 15-25% of Al2O3, 20-30% of CaO, 2-3% of MgO and 5-8% of SiO2. The slag system overcomes the defects of the prior art, solves the problems that slag is doped inside steel ingots and steel and slag are leaked in the ingot drawing process, and the steel ingots with good surface and internal quality are smelted.

Description

technical field [0001] The invention belongs to the technical field of special alloy refining, and relates to a slag system for electroslag remelting super austenitic stainless steel. Background technique [0002] Because super austenitic stainless steel belongs to austenitic stainless steel with high nickel, high molybdenum and copper and nitrogen, it is a relatively difficult steel to smelt, easy to segregate, crack, etc., and is the most demanding and difficult variety of stainless steel in production technology. At present, the electroslag remelting of super austenitic stainless steel mainly has the following problems: [0003] ①Using the traditional fixed electroslag remelting production, one steel ingot is remelted at a time, the head and tail removal amount is large, and the yield of the steel ingot is low. And when producing small cross-section steel ingots, the ratio of remelting speed to the diameter of electroslag steel ingots is as low as 0.65-0.75, resulting in...

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): C22B9/18
Inventor 王新鹏陈继志杨俊峰宁天信
Owner LUOYANG SUNRUI SPECIAL EQUIP
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
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap