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7431776 |
A slag-removal system for a cutting table includes a pair of drive members arranged in spaced endless loops extending parallel to a longitudinal direction, with a slag plow connected between the drive members, each loop having a lower ru...
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7045022 |
The present invention provides a method and process for removing adherent molten metal from a surface by applying a non-wetting agent for the metal to the surface or to the adherent molten metal. The non-wetting agent may be a pressurize...
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6989063 |
A device and a process for tempering at least parts of the cross section of sequentially produced rails from the rolling heat and for the subsequent cooling thereof to room temperature. The device comprises a hardening device comprising ...
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6805832 |
An improved nozzle for thermite cutting torches provides an elongated nozzle dimensioned and configured to direct a maximized flow of cutting flame to the desired cutting location on a workpiece. The nozzle includes an exterior wall defi...
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6793831 |
A method for fabricating devices in a pre-assembled state comprising forming plural laminae, registering the laminae, and bonding the laminae one to another is described. The plural laminae contain the substructures and structures of the...
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6786979 |
A steel cutting apparatus includes a cutting torch that is moved in an arcuate path for guiding the cutting torch so that a cutting flame of the cutting torch is always aimed at a bottom corner of the steel at the side where the cutting ...
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6582529 |
The unique in the construction is a number of important components and parts: a) the plate holder in molded aluminium; its double function and shaping in order to be able to be used as both a holder for plates and also serve for transfer...
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6440229 |
A lower pre-heat block assembly ( 9 ) for use with a metal scarfing apparatus ( 5 ) is disclosed. The lower pre-heat block assembly has a lower block ( 38 ) and an extension ( 39 ) engaged upon and in overlying relationship with a front ...
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6368549 |
Disclosed is a metallurgical vessel, in particular a converter for treating liquid molten metals, in particular steel, formed of a refractory lining and a supporting metal shell that surrounds the refractory lining. The vessel is compose...
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6203629 |
A process for cutting coked metal includes cutting with a flame or by electrowelding after the coked metal has been heated sufficiently to relieve stresses in the metal.
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6183569 |
An apparatus is disclosed for cutting target material which includes a housing having an inner cavity and an elongated nozzle extending from the inner cavity to communicate with the exterior of the housing. The apparatus is provided with...
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6068001 |
Process for stainless steel pickling consisting in placing the material to be treated in a bath kept at a temperature ranging from 30° C. to 70° C. and containing: a) HCl b) Fe 3 + c) HF d) emulsifiers, wetting agents, poli...
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5944915 |
A novel cutting nozzle assembly for a postmixed oxygen-fuel gas torch is disclosed. The nozzle assembly includes a cylindrical shroud which surrounds and extends away from the gas discharge orifices in the gas discharge end of the cuttin...
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5922144 |
A method for cutting steel in which an operator uses high pressure propane and oxygen. The operator heats the steel locally until it is molten, positions a cutting torch with a high angle of incidence relative to the molten steel, and th...
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5882437 |
A molded, non-metallic insert is disclosed that is of a form which replicates the seat configuration of the oxy-fuel cutting torch into which it is intended to be inserted. The insert material is compressible and resilient and allows a c...
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5792281 |
A post-mixed cutting torch selectively operable in a pilot mode and a cutting mode is provided by the present invention. The control body includes a fuel passage and an oxygen passage which is divided into a preheat oxygen supply branch ...
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5733385 |
A blade for a flail type brush cutting machine. The blade is torch cut or cast from thick metal in a generally L shape to have any desired angle between its stem and floor, in the preferred embodiment the angle is ninety degrees to insur...
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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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5458696 |
A process for cutting very large solidified pools of metal and metallic structures by flame cutting by means of an improved burning bar is described. The cutting is conducted by a hot flame composed of very hot high pressure oxygen exiti...
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5391237 |
The workpiece is obtained by cutting a metal product by oxygen cutting. An oxygen cutting jet is sent onto a preheated cutting zone of the product. A peripheral sleeve of additional gas is formed around the oxygen cutting jet so as to se...
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5350462 |
A process for cutting very large solidified pools of metal and metallic structures by flame cutting by means of an improved burning bar is described. The cutting is conducted by a hot flame composed of very hot high pressure oxygen exiti...
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5256212 |
A method and apparatus are provided for cutting an elongate workpiece. A conveyor is provided for supporting the workpiece lengthwise along an X-axis in a mutually orthogonal X, Y, and Z-axis coordinate system. An X-axis positioner is pr...
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5198039 |
Multiple cutting torches are automatically spaced along a torch bar operating parallel to a main beam spanning a cutting table with an apparatus and method allowing one or all of the cutting torches to be stored completely outside the cu...
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5196072 |
A method and apparatus are disclosed for controlling metal oxide fume generation during the oxygen-induced subdivision into smaller physical units of a body containing metal values in a control gas-enriched oxygen environment in the abse...
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5196071 |
A method and torch-cutting apparatus for slabs to prevent dross from forming on the underside of the slabs in the area of a cut includes a device to be positioned beneath a slab. The device applies a tight clamping pressure to the unders...
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5102473 |
Metal pieces such as blooms, continuously cast billets and cogged ingots, are cut by a deep-frozen, liquid cutting medium, in particular liquid oxygen, exiting from a nozzle at high pressure. The workpiece is moved in the longitudinal di...
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4995918 |
In autogenous cutting oxygen in liquid form is put under high pressure and flows to the cutting site through a liquid jet cutting nozzle. An increase in the cutting speed and in the cutting quality level is achieved in that the super-coo...
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4953358 |
A cooling device for cooling a liquefied gas having a low boiling point includes two cooling gas containers connected to each other by vacuum-insulated cooling-line segments. The liquid-gas line runs continuously through the cooling-line...
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4923527 |
A billet cutting apparatus of the type including an oxy-fuel cutting torch includes a slag removal nozzle operative simultaneously with the cutting torch to direct a jet of oxygen along the lower edge of the billet to remove slag beads t...
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4916278 |
A method of severing a metal piece into parts in which electrical contacts engage the piece at the end of the severing line and high frequency electrical current is fed to the contacts for the length of time required to at least signific...
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4826541 |
A method of thermal deburring of metal parts which is carried out in a chamber in two stages. The chamber is initially filled with a mixture of a combustible gas and air, the amount of each component in the mixture and the pressure there...
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4765846 |
A process for autogenic flame cutting with oxygen includes bringing the oxygen while in the liquid state to a high pressure and feeding the oxygen to the cutting location via a liquid jet cutting nozzle.
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4559890 |
An apparatus and method having particular utility in quickly releasing the moorings of large vessels and offshore platforms. The preferred embodiment of the apparatus comprises a pair of pyrotechnic cutting torches disposed in a housing ...
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4455176 |
A combination cutting torch and nozzle assembly for post-mix oxy-fuel gas cutting using two separate annular steams of preheat oxygen gas surrounding the fuel gas stream with the inner annular oxygen stream directed to impinge the fuel g...
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4278478 |
A stack of edge aligned, thin metal sheets pressed into tight face-to-face engagement between rigid upper and lower plates, and a series of closely spaced peripheral welds from upper to lower plates secures the stack together for torch c...
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4173499 |
A method of operating a metal-cutting burner in which the cutting oxygen is supplied through a central passage to a cutting nozzle and is enveloped in an oxygen curtain which is controlled so that the flow rate of oxygen to the curtain c...
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3989479 |
A gaseous fuel for use in heating, hardening, welding, cutting, and other working of metals comprises a mixture of about 80 to 82 per cent propane, or a propane-butane mixture, about 15 to 17 per cent propylene oxide, and about 2 to 4 pe...
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3982883 |
A method of flame cutting using an improved industrial fuel gas composition consisting of an industrial fuel gas such as propane, butane, natural gas and acetylene, or a mixture thereof, and a supplemental hydrocarbon additive which, whe...
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3954513 |
For the purpose of improving the economics of flame cutting and the qualiive characteristics of flame-cut components, and with the object of developing a method of flame cutting, particularly precision flame cutting, wherein the interact...
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3734476 |
A method for cutting metal is disclosed in which a fuel and an oxidizer are burned within a combustion chamber at higher than ambient pressures to produce a gas stream comprising an oxidizer-rich core surrounded by a fuel-rich sheath. Th...
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3730780 |
A method of moving and positioning a casting butt produced in a continuous casting plant with the aid of holding means and a cutting device used as the transport means. The device is secured to the butt, after which they are together mov...
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3661654 |
The flame cutting of seams to predetermined depths is characterized by reducing the cutting oxygen pressure more than 50 percent, and preferably 75 percent, of conventional cutting oxygen pressures. The cutting oxygen pressure is prefera...
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3656432 |
Granular ammonium perchlorate having a particle size of -40 to -50 mesh is packed to a bulk density of from about 1.0 to 1.5 g/cc in a rocket motor casing restricted to maintain a chamber pressure in the range of from about 100 to about ...
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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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3520739 |
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3508323 |
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3499801 |
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3498848 |
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3492171 |
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3488229 |
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