US2006208398A1PendingUtilityA1

Accelerated steel cutting methods and machines for implementing such methods

37
Assignee: PASULKA MATTHEW PPriority: Oct 29, 1999Filed: May 25, 2006Published: Sep 21, 2006
Est. expiryOct 29, 2019(expired)· nominal 20-yr term from priority
Inventors:Matthew P. Pasulka
B23K 7/10B23K 2103/04B23K 7/008B23K 7/003Y10T428/12389B23K 7/102B23K 37/0235B23K 2101/18B23K 37/0258Y10T428/12229B23K 7/002B23K 37/0408B23K 7/004
37
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Claims

Abstract

A method for cutting steel includes heating a portion of the steel until it is molten, positioning a cutting torch to have a high angle of incidence relative to the molten steel, and blasting hgih pressure oxygen at the molten metal. The blast of high pressure oxygen further heats the molten metal and blows the molten metal away from the steel to create a cutting trench. The cutting torch is then moved generally parallel to the cutting method includes a cutting torch that emits a high pressure combustible gas and a high pressure combustion enhancing gas. The torch directs the high pressure gases at the steel so that the gases hit the steel at an acute angle of attack. An automated device propels the torch in the general direction of the desired cut. The resultant cut metal product has at least one edge with a grain pattern that is not perpendicular to the direction of cut.

Claims

exact text as granted — not AI-modified
1 - 20 . (canceled)  
   
   
       21 . A piece of cut metal formed by a metal cutting apparatus, comprising: 
 a metal base having a first surface and a second surface disposed on opposite sides of said metal base;    an edge connecting said first and second surfaces, wherein said edge has a grain pattern that is not perpendicular to said first and second surfaces; and    cooled slag semi-adhering to the metal base wherein the cooled slag forms a plurality of generally arcuate paths.    
   
   
       22 . A piece of cut metal according to  claim 21 , wherein said slag is disposed on the first surface and wherein the metal cutting apparatus is located on a side of the metal where the slag is located.  
   
   
       23 . A piece of cut metal according to  claim 22 , wherein the edge is beveled.  
   
   
       24 . A piece of cut metal according to  claim 21 , wherein the edge is rounded.  
   
   
       25 . A piece of cut metal according to  claim 21 , wherein said slag is disposed on the second surface and wherein the metal cutting apparatus is located on a side of the metal opposite where the slag is located.  
   
   
       26 . A piece of cut metal according to  claim 25 , wherein the edge is beveled.  
   
   
       27 . A piece of cut metal according to  claim 25 , wherein the edge is rounded.  
   
   
       28 . A piece of cut metal according to  claim 21 , wherein said slag is disposed on the first surface and the second surface.  
   
   
       29 . A piece of cut metal according to  claim 28 , wherein the edge is beveled.  
   
   
       30 . A piece of cut metal according to  claim 28 , wherein the edge is rounded.  
   
   
       31 . A piece of cut metal formed by a metal cutting apparatus, comprising: 
 first and second surfaces;    said first and second surfaces being disposed on opposite sides of said cut metal;    an edge connecting said first and second surfaces, wherein said edge is not perpendicular to the first and second surfaces; and    said cut metal has slag disposed in a generally arcuate manner on at least one of said surfaces.    
   
   
       32 . A piece of cut metal according to  claim 31 , wherein the edge is rounded.  
   
   
       33 . A piece of cut metal according to  claim 31 , wherein the edge is beveled.  
   
   
       34 . A piece of cut metal according to  claim 31 , wherein the edge is wavy.  
   
   
       35 . A piece of cut metal according to  claim 31 , wherein the edge is rounded, beveled and wavy.  
   
   
       36 . A piece of cut metal according to  claim 31 , wherein the edge is rounded and beveled and has an irregularity.  
   
   
       37 . A piece of cut metal according to  claim 31 , wherein the edge is rounded and beveled and has an arcuate grain.  
   
   
       38 . A piece of cut metal formed by a metal cutting apparatus, comprising: 
 first and second surfaces;    said first and second surfaces being disposed on opposite sides of said cut metal;    an edge connecting said first and second surfaces, wherein said edge is not perpendicular to the first and second surfaces; and    said cut metal has slag disposed in a generally arcuate manner on at least one surface that is planar.    
   
   
       39 . A piece of cut metal according to  claim 38 , wherein the edge has generally no grain.

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