Supercharge Your Innovation With Domain-Expert AI Agents!

A device and method for preparing composite roll/compound steel ingot by electroslag casting method

A technology of electroslag casting and composite roll, applied in the field of metallurgy, can solve the problem of uneven material properties in the axial direction, and achieve the effect of ensuring uniformity

Active Publication Date: 2020-04-21
NORTHEASTERN UNIV LIAONING
View PDF8 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] In order to overcome the shortcomings of the power supply circuit scheme in the process of preparing composite steel ingots by traditional electroslag casting and the natural shortcomings of vertical production methods, resulting in uneven axial material properties, the present invention provides a method for preparing composite rolls / rollers by electroslag casting. The device and method for the composite steel ingot change the position of the high temperature zone of the slag pool by adjusting the current flow path in the composite steel ingot smelting system and the distance between the self-consumable electrode and the surface of the mandrel at different smelting periods, thereby avoiding the overheating of the mandrel surface. Melting, improving the uniformity of the axial performance of the bonding interface, controlling the uniformity of the circumferential performance, and improving the composite quality

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
  • A device and method for preparing composite roll/compound steel ingot by electroslag casting method
  • A device and method for preparing composite roll/compound steel ingot by electroslag casting method
  • A device and method for preparing composite roll/compound steel ingot by electroslag casting method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0048] The structure of the device for preparing composite roll / compound steel ingot by electroslag casting method is as follows: figure 1 As shown, including L-type crystallizer (4), electrode system and power supply system; L-type crystallizer (4) structure is as follows figure 2 As shown, it is mainly composed of an upper crystallizer (4-1), a conductive graphite plate (4-2), a high temperature resistant insulating plate (4-3) and a lower crystallizer (4-4); the lower crystallizer (4-4 ) is provided with a liquid level detector (15); the electrode system, the L-shaped crystallizer (4) and the bearing seat (13) are fixed on the crystallizer support (12), and the electrode support arm (11) of the electrode system is assembled There is a cross arm (16), and the cross arm (16) is used to suspend the dummy electrode and the self-consumed electrode (3), and the bearing seat (13) is used to place the bearing of the mandrel shaft jacket of the mandrel (6); the power supply system ...

Embodiment 2

[0075] Device structure is the same as embodiment 1;

[0076] Method is with embodiment 1, and difference is:

[0077] When preheating the mandrel, connect the circuit I switch and the circuit III switch, so that the power supply, short network, conductive graphite plate, slag pool and mandrel form the second mandrel preheating power supply circuit;

[0078] There are no pores, inclusions, cracks and other defects at the interface of the composite roll, and the depth of the radial and axial fusion layers is uniform and uniform, and the quality of the composite interface is good.

Embodiment 3

[0080] Device structure is the same as embodiment 1;

[0081] Method is with embodiment 1, and difference is:

[0082] (1) The width of the consumable electrode is 40mm, the length is 1000mm, the diameter of the mandrel is Φ400mm, and the length is 1000mm;

[0083] (2) The inner diameter of the upper crystallizer is 600mm, the inner diameter of the lower mold is Φ520mm, the diameter of the composite roll expected to be prepared is Φ520mm, and the thickness of the composite layer is 60mm;

[0084] There are no pores, inclusions, cracks and other defects at the interface of the composite roll, and the depth of the radial and axial fusion layers is uniform and uniform, and the quality of the composite interface is good.

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
diameteraaaaaaaaaa
lengthaaaaaaaaaa
widthaaaaaaaaaa
Login to View More

Abstract

A device and method for preparing composite rolls / composite steel ingots by electroslag casting. The device includes an L-shaped crystallizer, an electrode system and a power supply system; the first pole of the power supply is connected to the cross arm through a short network, and the second pole of the power supply is connected to a conductive The graphite plates are connected through a short net, and the short net connected to the second pole and the conductive graphite plate is equipped with a loop II switch; the first pole of the power supply is also connected to the electric graphite plate through a short net with a loop III switch, and the second pole of the power supply is It is also connected to the mandrel shaft through a short network with a circuit I switch. The method includes: fixing the consumable electrode on the cross arm; fixing the mandrel on the bearing seat; connecting the circuit I switch to increase the temperature of the slag pool and preheating the mandrel; completing the preheating; disconnecting circuit I and circuit III and connecting them. Circuit II switches to melt the consumable electrode and start recombination. The method of the invention can ensure the uniformity of the fusion layer in the axial height of the entire composite product and accurately control the melting degree of the bonding interface.

Description

technical field [0001] The invention belongs to the technical field of metallurgy, and in particular relates to a device and method for preparing composite rolls / composite steel ingots by electroslag casting. Background technique [0002] In recent years, the development of large-scale and complex equipment in the fields of electric power, petrochemical, and metallurgy has put forward higher requirements for the large-scale casting and forging industry, and there is an increasing demand for large-scale steel ingots. [0003] Among the million-kilowatt nuclear power units, whether it is the second-generation plus or the third-generation AP1000 and CAP1400, there are a large number of castings and forgings with high technical requirements, large specifications, and complex shapes. Forgings with complex shapes such as cylinders require integral forging; the low-voltage integral rotor of the conventional island of a million-kilowatt nuclear power unit is currently the solid forg...

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 Patents(China)
IPC IPC(8): B22D23/10B22D19/16
CPCB22D19/16B22D23/10
Inventor 董艳伍姜周华侯志文曹玉龙曹海波徐铭翔苗招亮李毓硕
Owner NORTHEASTERN UNIV LIAONING
Features
  • R&D
  • Intellectual Property
  • Life Sciences
  • Materials
  • Tech Scout
Why Patsnap Eureka
  • Unparalleled Data Quality
  • Higher Quality Content
  • 60% Fewer Hallucinations
Social media
Patsnap Eureka Blog
Learn More

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

© 2025 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com