Method and apparatus for metallurgical alloy additions

• US 2,677,609 A
• Filed: 08/15/1950
• Issued: 05/04/1954
• Est. Priority Date: 08/15/1950
• Status: Expired due to Term

• Current Assignee: Walter W. Smith, William H. Moore
• Original Assignee: Walter W. Smith, William H. Moore
• Inventors: Moore, William H., Smith, Walter W.
• Application Number:
  US03/179,488
• Time in Patent Office: 1,358 Days
• US Class Current: 75/566
• CPC Class Codes: C21C 7/0068 by introducing material into a current of streaming metal

Claims

4. THE PROCESS OF INCORPORATING ADDITIVE MATERIAL TO A MOLTEN METAL COMPRISING, PROVIDING A CHANNEL MIXING TROUGH HAVING A SMALL CROSS SECTIONAL AREA WITH RESPECT TO THE LENGTH THEREOF, INTRODUCING UNTREATED MOLTEN METAL INTO A FIRST END OF SAID TROUGH AT A FIRST RATE TO FORM A STREAM, INTRODUCING SLAG FORMING ADDITIVE MATERIAL TO THE SURFACE OF THE STREAM AT AN ADDITIVE POINT DOWNSTREAM FROM THE SAID FIRST END OF THE TROUGH AND AT A RATE RELATED TO THE RATE OF MOLTEN METAL FLOWING PAST OF SAID ADDITIVE POINT, ALLOWING THE FLOW OF MOLTEN METAL TO CARRY THE ADDITIVE MATERIAL DOWN-STREAM AWAY FROM SAID ADDITIVE POINT, PERMITTING THE SLAG AND SOME MOLTEN METAL TO ESCAPE SAID TROUGH FROM THE SURFACE OF SAID STREAM AT A SECOND END OF THE TROUGH AND AT A SECOND RATE, REGULATING SAID FIRST AND SECOND RATES TO MAINTAIN A PRE-DETERMINED DEPTH OF MOLTEN METAL STREAM AND RATE OF FLOW THROGH SAID CHANNEL, AND SKIMMING THE SLAG FROM THE SURFACE OF THE STREAM.