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6537386 |
A camera is arranged to map defects in the molten metal bath formed by scarfing using a scarfing torch on a steel slap. The camera has a field of a large area of the slab and records the defects as flashes of high intensity light the nat...
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5688339 |
Heating metal articles by direct surface impingement of an oxy-fuel flame without causing damage, or surface melting of the articles being heated. Flame contact is cycled to achieve maximum allowable rate of heat introduction thereby sub...
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5157232 |
Metal workpieces having portions of different mass are sequentially stepped through a series of induction heating units having differently contoured inductors for inductively heating the workpiece portions of different mass so as to prog...
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4925499 |
A method of and an apparatus for controlling a quantity of an explosive gas mixture to be used in treating workpieces with thermal and pressure shocks wherein a signal gas having a predetermined initial pressure is introduced into a work...
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4773946 |
There is provided a device for controlling the vertical operating gap between the lower end of a cutting head, such as a frame cutting torch, and a generally flat workpiece positioned below the cutting head as the head and workpiece are ...
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4755232 |
A method and apparatus for mechanically controlling the flame cutting and/or connection welding of workpieces. The difficulty encountered during the mechanized burning of holes in vessels, containers or tanks and the welding of connectin...
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4602967 |
The invention is directed to a method and apparatus for thermally cutting rectangular metal slabs along a longitudinal axis of the slab. A metal slab is conveyed along a predetermined path of travel while it is being cut by, for example,...
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4601762 |
The surface and/or subsurface defects of the surface to be treated are detected, preferably over the entire said surface. The defects are eliminated by scarfing with a torch and/or by milling, following which the treated surface is inspe...
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4501624 |
A flame-cutter for separating a moving billet produced by a continuous caster wherein the billet is supported by at least one billet supporting roller. The flame-cutter includes a burner having a nozzle supported for synchronous movement...
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4439249 |
Method and apparatus for automated cutting of metal plates in which fuel and oxygen adjustments, as well as other parameters are controlled automatically responsive to temperature sensed at a plurality of points near where the cut is bei...
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4384901 |
A method and apparatus for cutting a pipe. A pipe is positioned on a plurality of support rollers for rotating the pipe. A cutting torch, mounted on a telescoping arm, is movable along the longitudinal axis of the pipe. The angle that th...
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4337099 |
A flaw detecting unit inspects the surface of a red-hot steel material, the nail marking unit drives steel nails into the flaw in response to the flaw detection signal, and a scarfing unit scarfs the flaw starting from the nails in respo...
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4328049 |
A torch height sensing apparatus (10) is provided for generating information representative of the spacing between a cutting torch (12) and an associated workpiece (14). The apparatus (10) drives a preselected current from the torch (12)...
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4280687 |
A cutting machine for severing a moving strand portion includes an elongated support; the strand portion normally moves near the support in one direction of elongation thereof, and a carriage may be operably moved on the support in the o...
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4175729 |
Method and apparatus for producing metal blanks, in particular steel slabs, which at least in a predetermined surface area have substantially no defects such as cracks, seams, bubbles, scabs, or the like, at least the surface portion to ...
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4138277 |
Method and apparatus for producing metal blanks, in particular steel slabs, which at least in a predetermined surface area have substantially no defects such as cracks, seams, bubbles, scabs, or the like, at least the surface portion to ...
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4126491 |
Method and apparatus for producing metal blanks, in particular steel slabs, which at least in a predetermined surface area have substantially no defects such as cracks, seams, bubbles, scabs, or the like, at least the surface portion to ...
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4115151 |
The present invention relates to a method and an apparatus for treating the surface of a workpiece. The invention ensures correct working of the workpiece surface and renders an accurate control of the working place in question possible....
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3928790 |
In a device for maintaining a constant distance between a tool and the surface of a workpiece, the tool distance is determined by a sensing element and compared with a desired distance. The resultant error signal is used to correct the d...
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3769097 |
The combination of a table for cutting steel plate and an exhaust system for evacuating the fumes and smoke produced by the cutting operation. The expendable grating of the cutting table utilizes bars which are diagonal to the usual cutt...
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3755005 |
A method and device for controlling a gas cutting operation comprising a photosensitive element provided at a location on the gas cutting device in alignment with the path of cutting oxygen and its ejection vent to accept light emanating...
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3701514 |
The combination of a table for cutting steel plate and an exhaust system for evacuating the fumes and smoke produced by the cutting operation. The expendable grating of the cutting table utilizes bars which are diagonal to the usual cutt...
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3650847 |
A method of automatically controlling the speed at which a gas flame cutter travels over the work to assure a uniform and complete cut. The flames generate a voltage between the gas nozzle and work which pulsates, the pulsation becoming ...
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3633010 |
A system having laser source and radiation sensor assemblies electrically communicating with a computer is provided for rapid, remote sensing of the static, geometric and dynamic motion properties of a selected specimen. A laser beam inc...
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3619301 |
This invention provides a method for detecting "uncut" condition in gas workings, in particular in cutting works. The detection is performed by making use of two back pressures generated by pressurized fluid ejected from a jet located ad...
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3544095 |
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3432366 |
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3339903 |
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3245842 |
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3212375 |
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3153109 |
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3149193 |
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3020033 |
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2949391 |
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2747152 |
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2622967 |
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2534958 |
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2487974 |
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2472951 |
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2411737 |
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2177276 |
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2089015 |
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2089014 |
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3668018 |
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