Method and apparatus for electromagnetic confinement of molten metal in horizontal casting systems
A technology of molten metal and cast metal, applied in the field of electromagnetic confinement, can solve problems such as increasing production costs, interfering with the solidification process, and large standing waves
Inactive Publication Date: 2008-11-05
ALUMINUM CO OF AMERICA
View PDF1 Cites 1 Cited by
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
The electromagnetic side seals described above have not been successfully commercialized for two reasons.
First, the high current required to confine the molten metal pool creates a standing wave on the top surface of the metal pool that is too large for the casting process
Second, the high electromagnetic force required to confine the molten metal head formed at the top of the vertical roller caster system produces inductive heating on the sidewalls of the metal pool, which interferes with the solidification process
Additional machining adversely increases production costs
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 moreImage
Smart Image Click on the blue labels to locate them in the text.
Smart ImageViewing Examples
Examples
Experimental program
Comparison scheme
Effect test
Embodiment Construction
[0037] The present invention provides an electromagnetic side seal that confines molten metal in the mold area of a horizontal roll casting system or a belt casting system and the magnetic field is generated by a lower alternating current than was previously possible. By providing sufficient electromagnetic confinement means at relatively low AC currents, the present invention utilizes electromagnetic confinement without causing a substantial increase in the temperature of the molten metal or producing wave generating effects.
[0038] As mentioned above, in the existing vertical casting method in which the height of the molten metal ram is large, a large magnetic force is required to limit the large pressure generated by the molten metal, wherein the large magnetic force usually requires a large current, which Larger currents generate heat. For example, as a representative of a typical vertical casting method, in order to confine molten aluminum to a height of 300mm, the mi...
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
| Property | Measurement | Unit |
|---|---|---|
| magnetic flux density | aaaaa | aaaaa |
| magnetic flux density | aaaaa | aaaaa |
Login to View More
Abstract
The present invention provides an apparatus for strip casting of molten metal including a pair of casting rollers R1, R2, adapted to receive molten metal M along a horizontal axis, wherein a vertical distance separating the pair of casting rollers defines a molding zone; and an electromagnetic edge containment apparatus 15 positioned on each side of the molding zone having an induction coil wound about a portion of a magnetic member to generate magnetic lines of force upon application of a current, wherein the poles of the magnetic member are positioned distal from to aligned to the planar sidewall of the casting rollers and the current provides magnetic lines of force perpendicular to said horizontal axis that contain the molten metal in contact to the casting rollers without substantially increasing the temperature of the molten metal.
Description
technical field [0001] The present invention relates to continuous casting of metal strip, and more particularly to electromagnetic confinement of molten metal in continuous casting systems. Background technique [0002] Continuous casting of metal is carried out in twin roll casters and belt casters or combinations thereof. Casting methods are available in both horizontal and vertical directions. In particular, the steel industry has recently developed high-speed twin-roll strip casters operating in a vertically downward direction. [0003] To date, mechanical side seals have been employed to provide confinement of the molten metal in the casting area. Such devices include tracked side seals that move with the strip (as in a Hazelett continuous caster), or stationary side seals that press against the surface of the rolls. The latter is used in the field of twin roll strip casting. The above-mentioned fixed mechanical side seals have a short service life because they ero...
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
Login to View More Patent Type & Authority Applications(China)
IPC IPC(8): B22D11/06
CPCB22D11/0662B22D11/0622B22D11/0605B22D11/115
Inventor 小D·A·托姆斯A·尤纳尔G·F·怀特-麦尔D·W·迪蒙斯
Owner ALUMINUM CO OF AMERICA