Home | Links | Contact Us | More About Intellectual Property | Bookmark
Search patents:
Home Heat Accumulators Coolant-control-in-EM-casting

 Heat exchanger for cooling process gases which are under high pressure and temperature
What I claim is: 1. A heat exchanger for cooling process gases which are under high pressure and ...


 Thin and flat flame burner
It is a primary object of this invention to provide a burner system for providing a thin flat flame ...


 Low phosphate content dishwashing detergent
We claim: 1. A dry powder, low-phosphate machine dishwashing composition which consists essentially ...


 Heat sealing roller having a temperature self-controlled PTC heating resistor for welding thermoplastic foils
It is an object of the invention to provide a welding device for welding superimposed foils with ...


 Apparatus for waxing skis
OF PREFERRED EMBODIMENT Referring now to the drawings in detail, there is illustrated in FIG. 1 ...


 Plastic, heated water container for tape machines
What is claimed is: 1. In a tank for a tape dispensing machine or the like: the tank being adapted ...


 Environmentally degradable soap bar system
An environmentally degradable soap bar system, which includes a soap bar having a predetermined ...


 Solar heat collector
The present invention provides a solar energy collector in the form of a bristle fin type of ...


 Burner of air adjustment type provided with annular air passage
Methyl alcohol can easily be synthesized from various raw materials such as natural gas, petroleum, ...


 Cylinder with two-step movement
I claim: 1. In a cylinder with two-step movement, comprising a housing with a first and a second ...


 Coolant control in EM casting

Details
Inventors: Goodrich, David G.;
Assignee: Kaiser Aluminum & Chemical Corporation (Oakland, CA)
Primary Examiner: Spruill; R. L.
Assistant Examiner: Lin; K. Y.
Attorney, Agent or Firm: Calrow; Paul E., Lynch; Edward J.

The invention relates to the application of coolant onto the surface of an electromagnetic D.C. cast ingot or billet where two coolant streams are directed to the solidified or partially solidified metal so that the two streams intersect a short distance away from the metal surface. By controlling the velocity and/or volume of one or both coolant streams, the point of impact on the metal surface can be brought closer to the discharge end of the inductor and thereby increase cooling rates. In this manner the excursions of molten metal which form the icicle-like appendages on EM cast ingot or billet can be effectively eliminated. When the end of the ingot or billet passes the area of coolant impact and the risk of such excursions is slight, the point of coolant impact can be lowered to a more conventional level for the remainder of the cast.

DETAILED DESCRIPTION I claim: 1.
In the method of continuous or semicontinuous casting of light metal products wherein molten metal is introduced into the feed end of an annular electromagnetic inductor, wherein the shape of the molten metal is controlled as it solidifies or partially solidifies in the inductor by means of forces generatexd by an electromagnetic field and wherein coolant is applied to the surface of the solidified or partially solidified metal which emerges from the discharge end of said electromagnetic inductor, the improvement comprising: (a) directing a first stream of liquid coolant around the periphery of the emerging metal at an angle of about 5.
degree.
to 40.
degree.
from the inductor axis and in the direction away from the discharge end of the electromagnetic inductor; (b) directing a second stream of fluid around the periphery of the emerging metal at an angle between about 20.
degree.
and 95.
degree.
from the first stream so that both first and second streams converge to form a confluent stream at a position disposed a short distance away from the emerging metal surface and the confluent stream then contacts the metal surface at a desired location depending upon the volume and velocity of the two streams, with the sum of the angle between the first stream and the inductor axis and the angle between the first and the second stream not exceeding 125.
degree.
; and (c) controlling the volume or velocity or both the volume and velocity of the second fluid stream at elevated levels at the start of casting in order to direct the confluent coolant stream to an impact area on the emerging metal which is as close as possible to the discharge end of the electromagnetic inductor and when the butt of the ingot or billet passes the area of coolant impact, decreasing the volume or velocity or both the volume and velocity of the second fluid stream so that the area of coolant impact on the ingot or billet is moved farther away from the discharge end of the inductor than at the start of casting


Related patents
  Plate heat exchanger
I claim: 1. A heat exchanger having at least two sections of heat exchanging plates, each section comprising a plurality of said plates arranged adjacent to each other ...
  Apparatus for the utilization of solar energy
It is therefore an important object of this invention to provide a new and economically feasible system for heating buildings operated wholly or in part with solar ...
  Solar energy collector array
Briefly stated, the invention in one form thereof comprises a solar energy system which utilizes a plurality of lens-reflector modules to focus and reflect the sun's ...
  Frying pan with mechanisms for preventing oil splashing and fire occurrence
An object of the present invention is to provide a lid plate capable of covering an entire opening surface of a frying pan so as to prevent the oil splashing from the ...
  Cold-hearth melt-spinning apparatus for providing continuous casting of refractory and reactive alloys
The cold-hearth melt-spinning apparatus for providing continuous casting of refractory and reactive alloys of the present invention overcomes these and other ...
  Inner roof solar system
What is claimed is: 1. A solar heated liquid section unit comprising in combination, an insulated exterior roof facing, and a plurality of pipes extending throughout the ...
  Apparatus for and method of programming the minimum energy threshold for pacing pulses to be applied to a patient's heart
In accordance with this invention, there is disclosed a method of and a programmer for programming a threshold mode of operation into a pacing generator whereby the ...
  Solar energy collector
The basic unit in the solar energy collection system of this invention is a relatively small reflective type concentrating radiant energy collector mounted to track, i.e....
  Swimming pool cover and solar heater
The subject invention relates to the combination of a solar heater and a swimming pool cover. Solar energy collection means having a specific gravity greater than that ...
  Hydrofining catalysts
OF THE INVENTION Preferably the vanadium compound and oxygen containing compound (a) used in step (A) of the process of this invention is selected from the group ...

0.014

Archive: All patents - Links

Copyright (c)2006 Eipa-patents.org - All rights reserved