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

Electromagnetic continuous casting method of composite roller and its casting equipment

A technology of composite rolls and casting equipment, applied in the field of continuous casting, can solve the problems of difficult thickness control, composite failure, large refractory materials, etc., and achieve the effect of promoting the floating of inclusions, improving surface quality, and eliminating internal shrinkage holes

Inactive Publication Date: 2006-01-11
NORTHEASTERN UNIV
View PDF6 Cites 17 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, these methods all adopt a funnel-shaped tundish in the pouring process, so as to provide temperature compensation for the pouring process and provide feeding molten metal during the solidification process. complex
At the same time, during the preheating process of the roller core, the roller core is directly exposed to the air. Although the water glass layer is coated, due to the high preheating temperature, oxidation is inevitable, which greatly affects the bonding quality of the composite layer. At the same time, water glass also pollutes molten steel; in addition, no secondary cooling system is used, the casting speed is very slow, the productivity is extremely low, and the advanced electromagnetic stirring steel casting technology has not been applied
[0006] 2. No prefabricated roll core
These methods are relatively simple in process and have certain operability, but in these casting methods, there is a transition zone between the roller core and the outer working layer, which is called the composite interface, and its thickness directly affects the bonding quality. If the thickness is too large or Too small will lead to composite failure, and its thickness is difficult to control in casting production

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
  • Electromagnetic continuous casting method of composite roller and its casting equipment

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025]Composite roll electromagnetic continuous casting equipment and workpieces to be processed include: roll core positioning frame 1, roll core 2 (using 45# high-quality carbon structural steel bars), induction preheating furnace 3, injection flow tank 4, operating platform 5, induction Supplementary heat device 6, molten metal 7 in the working layer of the roll (its chemical composition is: C1.1%, Cr5.0%, W7.0%, Mo4.3%, V3.8%, the rest is Fe), Double electromagnetic water-cooled crystallizer 8, crystallizer vibration system 9, electromagnetic stirrer 10, positioning dummy head 11, secondary cooling system 12, billet drawing machine 13. The roller core positioning frame 1 and the induction preheating furnace 3 can move freely up and down for convenient positioning; a protective gas filling ring is installed in the induction preheating furnace 3, and the power and length of the induction preheating furnace 3 are proportional to the casting speed. matching, so that the roller...

Embodiment 2

[0027] 1. According to the requirements for the material and size of the roll core 2 in production and application, the oxide layer on the outside of the roll core 2 is removed by machining, the positioning holes are processed, and pickling is carried out to prefabricate the roll core 2 of the composite roll;

[0028] 2. Place the prefabricated roll core 2 on the central axis of the double electromagnetic water-cooled crystallizer 8, and position it by positioning the dummy head 11 and the roll core positioning frame 1;

[0029] 3. Open the cooling water valve of the double electromagnetic water-cooled crystallizer 8, then raise the positioning dummy head 11 to the lower part of the induction preheating furnace 3, switch on the power supply of the induction preheating furnace 3, and turn on the inertia protection during the preheating process Inert gas, the roller core 2 is continuously preheated during the downward movement, and it is just preheated to the preheating temperatu...

Embodiment 3

[0036] 1. According to the requirements for the material and size of the roll core 2 in production and application, the oxide layer on the outside of the roll core 2 is removed by machining, the positioning holes are processed, and pickling is carried out to prefabricate the roll core 2 of the composite roll;

[0037] 2. Place the prefabricated roll core 2 on the central axis of the double electromagnetic water-cooled crystallizer 8, and position it by positioning the dummy head 11 and the roll core positioning frame 1;

[0038] 3. Open the cooling water valve of the double electromagnetic water-cooled crystallizer 8, then raise the positioning dummy head 11 to the lower part of the induction preheating furnace 3, switch on the power supply of the induction preheating furnace 3, and turn on the protective protection during the preheating process. The gas, the roller core 2 is continuously preheated during the downward movement, and it just reaches the appropriate temperature wh...

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
Magnetic inductionaaaaaaaaaa
Login to View More

Abstract

An electromagnetic conticasting apparatus for casting composite rolling roller is composed of dual-electromagnetic crystallizer cooled by water, induction afterburner, electromagnetic stirrer, preheating induction furnace, and vibrating system. Its casting method includes such steps as prefabricating roller core, locating in preheating induction furnace, preheating, arranging it at lower end of said crystallizer, installing filling bath, turning on said induction afterburner filling the molten metal for working layer from filling bath in the crystallizer, turning on secondary cooling system, vibrating system, electromagnetic stirrer and billet puller, continuously pulling out billet and spraying water for cooling.

Description

technical field [0001] The invention relates to the technical field of bimetal interface high-temperature composite technology and continuous casting of bimetal components, in particular to a continuous casting method and casting equipment for composite metal rolls. Background technique [0002] Rolls play a vital role in steel rolling production, and at the same time wear and consume a lot. The conventional manufacturing methods of rolls mainly include integral casting, overflow casting, centrifugal casting and forging. The integral casting method obtains a single-component roll, which is difficult to meet the requirements of making the roll have both a high-toughness core and a high-wear-resistant working layer. For this reason, composite rolls using overflow casting or centrifugal casting have appeared, but because the cores of composite rolls produced by these methods are cast structures, the strength and toughness of the cores are poor. With the advent of advanced rol...

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): B22D19/16
Inventor 王恩刚赫冀成邓安元张兴武冯明杰王俊刚
Owner NORTHEASTERN UNIV
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