Immersion nozzle for casting central point of ultrathin special-shaped blank

An immersion, special-shaped blank technology, applied in casting equipment, casting melt containers, metal processing equipment, etc., can solve the problems of many defects in ultra-thin shaped blanks and affect the pass rate, etc. The effect of flow field and temperature field stabilization

Active Publication Date: 2019-03-15
LAIWU STEEL YINSHAN SECTION CO LTD
View PDF11 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] Aiming at the problem that in the casting process of the existing submerged nozzle, due to the limitation of the web thickness of the ultra-thin profiled billet crystallizer, there are many defects in the ultra-thin profiled billet, which affects the qualified rate, the invention provides an ultra-thin profiled billet single Point casting submerge

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
  • Immersion nozzle for casting central point of ultrathin special-shaped blank
  • Immersion nozzle for casting central point of ultrathin special-shaped blank
  • Immersion nozzle for casting central point of ultrathin special-shaped blank

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0057] image 3 The section size of the special-shaped blank shown is 900mm×450mm, the length of the web 10 of the special-shaped blank is 600mm, and the width is 100mm; the radius of the first rounded corner 12 at the flange 11 of the special-shaped blank is 80mm, and the second rounded corner is 13 round The arc radius is 50mm.

[0058] against image 3 The special-shaped billet shown corresponds to the crystallizer used. This embodiment provides a submerged nozzle for casting at the center of the ultra-thin special-shaped billet. The specific structure is as follows figure 1 , figure 2 As shown, the length of the mouth portion 4 of the vertical section of the submerged nozzle is 100 mm, the angle between the extension line of the mouth portion 4 and the center line of the vertical section 2 is 15°, and the mouth portion 4 is connected to the upper nozzle of the tundish. The connection is protected by inert gas, the length of the vertical section 2 is 500mm, the length o...

Embodiment 2

[0061] The structure of this embodiment is the same as that of Embodiment 1, except that submerged nozzles of different sizes and specifications are provided. image 3 The crystallizer required for the production of the profiled billet is shown, and this embodiment provides a submerged nozzle for casting at the center of the ultra-thin profiled billet.

[0062] The length of the bowl mouth 4 of the vertical section of the submerged nozzle is 80mm, and the angle between the extension line of the bowl mouth 4 and the center line of the vertical section 2 is 30°. Protected by inert gas, the length of the vertical section 2 is 450mm, the length of the horizontal section 3 is 360mm, and the oval cross-sectional area c is 1000mm 2 . A pair of circular through-holes 7 are symmetrically arranged at both ends of the horizontal section 3 along the central point of the elliptical cross-section, and the sum b of the cross-sectional areas of the two circular through-holes 7 is 300mm 2 , ...

Embodiment 3

[0065] The structure of this embodiment is the same as that of Embodiment 1, except that submerged nozzles of different sizes and specifications are provided. image 3 The crystallizer required for the production of the profiled billet is shown, and this embodiment provides a submerged nozzle for casting at the center of the ultra-thin profiled billet.

[0066] The length of the bowl mouth 4 of the vertical section of the submerged nozzle is 110mm, and the angle between the inner extension line of the bowl mouth 4 and the center line of the vertical section 2 is 20°. Protected by gas, the length of the vertical section 2 is 500mm, the length of the horizontal section 3 is 720mm, and the elliptical cross-sectional area c is 900mm 2 . A pair of elliptical through-holes 7 are arranged symmetrically along the lower end of the short axis of the elliptical cross-section in the horizontal section 3, and the sum b of the cross-sectional areas of the two elliptical through-holes 7 is ...

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 discloses an immersion nozzle for casting a central point of an ultrathin special-shaped blank, and belongs to the technical field of continuous casting of special-shaped blanks. The immersion nozzle comprises an immersion nozzle body, wherein the immersion nozzle body comprises a vertical section and a horizontal section, the vertical section and the central position of the horizontal section are integrally connected, the vertical section comprises a bowl part and an equal-diameter section, the bowl part is positioned at the upper end of the equal-diameter section, the inner cross section of the equal-diameter section is oval, and the long axis of the oval cross section is parallel to the central line of the horizontal section; the inner diameters of the horizontal section are equal and are symmetrical about the symmetrical surface of the vertical section, the shape of the inner vertical section is elliptic, the elliptic section is parallel to the central line of the vertical section, and through holes are arranged at the two ends of the horizontal section; and at least two downward inclined water holes are symmetrically arranged at the bottom end of the horizontal section. The structure of the immersion nozzle can be optimized, the temperature field and the flow field in the mold are stable, the flowing uniformity of molten steel is improved, the defects causedby continuous casting are reduced, the quality of ultra-thin special-shaped blank continuous casting is improved, and the immersion nozzle has the advantages of simple structure, reasonable design andeasiness in manufacturing.

Description

technical field [0001] The invention relates to the technical field of continuous casting of special-shaped billets, in particular to an ultra-thin special-shaped billet central point casting submerged nozzle. Background technique [0002] Since the 1950s, the continuous casting method in which molten steel is gradually solidified and directly produced by a tension leveler has become popular. In addition to the production of ordinary billets, blooms, and slabs, continuous casting and rolling I-shaped steel castings have also appeared. Liang's vision, at the same time put forward the concept of "shaped blank". After continuous experimental exploration and on-site practice, the world's first I-shaped billet continuous casting machine was built and put into production by SMS Demark (formerly Comcast) in Lake Ontario, Canada in 1968. Subsequently, profiled billet continuous casting machines were built and put into production in several Japanese steel companies. At the end of t...

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): B22D41/50
CPCB22D41/50
Inventor 李四军王中学何飞彭永香杜金科韩蕾蕾郭达周俐常立忠王海军韩震超
Owner LAIWU STEEL YINSHAN SECTION 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