Special-shaped billet casting machine continuous casting weathering steel crystallizer protection slag

A technology for mold mold flux and special-shaped billet, which is used in the field of mold mold flux for continuous casting of O9CuPCrNi weathering steel in a special-shaped billet caster, can solve problems such as cohesive breakout, and achieve good surface quality and non-cohesive breakout. effect of accident

Active Publication Date: 2008-09-03
MAANSHAN IRON & STEEL CO LTD
View PDF7 Cites 16 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The technical problem to be solved by the present invention is to provide a mold slag for continuous casting of weathering steel crystallizers for large profile billet casters that solves cohesive breakouts and slab surface cracks

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

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] Mold flux chemical composition: CaO 34.5%, SiO 2 34.1%, li 2 O 1.4%, B 2 o 3 3.8%, Na 2 O 4.2%, F - 5.3%, C 5.7%, MgO 2.9%, Al 2 o 3 6.7%, Fe 2 o 3 1.4%. Mold flux physical properties: melting point 1098°C, viscosity 0.39 Pa·S at 1300°C, solidification temperature 1149°C, melting speed 30 seconds.

Embodiment 2

[0031] Mold flux chemical composition: CaO 36.2%, SiO 2 35.2%, li 2 O 1.1%, B 2 o 3 3.2%, Na 2 O 4.8%, F - 4.7%, C 5.8%, MgO 2.6%, Al 2 o 3 5.5%, Fe 2 o 3 0.9%. Mold flux physical properties: melting point 1114°C, viscosity 0.45 Pa·S at 1300°C, solidification temperature 1162°C, melting speed 27 seconds.

Embodiment 3

[0033] Mold flux chemical composition: CaO 37.9%, SiO 2 37.5%, li 2O 0.7%, B 2 o 3 2.9%, Na 2 O 3.5%, F - 5.1%, C 4.6%, MgO 2.0%, Al 2 o 3 4.7%, Fe 2 o 3 1.1%. Mold flux physical properties: melting point 1121°C, viscosity 0.51 Pa·S at 1300°C, solidification temperature 1156°C, melting speed 28 seconds.

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
melting pointaaaaaaaaaa
melting pointaaaaaaaaaa
solidification pointaaaaaaaaaa
Login to view more

Abstract

The invention discloses a protective slag for beam blank continuous casting mould of weathering steel. The protective slag contains pre-melted slag, cement clinker, lithium carbonate, borax, fluorite, carbon black, graphite and bentonite. Compared with the prior art, the protective slag has the advantages of good surface quality of the casting blank and non-risk of binding steel leakage.

Description

technical field [0001] The invention relates to mold powder, in particular to special-shaped billet caster continuous casting O 9 CuPCrNi weathering steel mold powder. Background technique [0002] In order to make the cross-sectional size of the continuous casting slab closer to the finished product size, reduce the number of rolling passes, and save energy, continuous casting near the final shape, such as H-shape continuous casting of profiled billet and thin slab continuous casting, has become the development trend of modern continuous casting technology. However, due to the complex shape, uneven distribution of flow field and temperature field in the mold, large specific surface area, and easy blockage of solidification shrinkage, the difficulty of forming a uniform shell in the mold is greater than that of billets, slabs and other sections. , resulting in a significantly higher probability of surface defects and breakout accidents than billets and slabs. For example: ...

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): B22D11/111
Inventor 孙维文光华汪开忠唐萍吴坚黄社清汤寅波
Owner MAANSHAN IRON & STEEL CO LTD
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