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1. 发明授权

US4084988A Method and apparatus for making instantaneous scarfing cuts 失效
公开(公告)号：US4084988A
公开(公告)日：1978-04-18
申请号：US789720
申请日：1977-04-25
申请人： Stephen August Engel , Ronald Elmer Fuhrhop
发明人： Stephen August Engel , Ronald Elmer Fuhrhop
IPC分类号： B23K7/06 , B23K26/14 , B23K7/08
CPC分类号： B23K26/1423
摘要： An instantaneous scarfing cut on the surface of a metal workpiece can be made by:(a) causing relative motion between the workpiece and a stream of scarfing oxygen gas, and simultaneously therewith(1) impinging at least one laser beam on the work surface so as to produce a heated path of desired length across said surface relative to its direction of motion, said heated path being produced by the laser beam heating a series of points on said surface to their oxygen ignition temperature, and(2) impinging a stream of scarfing oxygen onto said heated path, thereby causing an instantaneous scarfing cut to begin along said path, and(b) continuing the flow of scarfing oxygen until the desired length of cut has been produced.

2. 发明授权

US4038108A Method and apparatus for making an instantaneous thermochemical start 失效
标题翻译：制备瞬时热化学开始的方法和装置
公开(公告)号：US4038108A
公开(公告)日：1977-07-26
申请号：US684833
申请日：1976-05-10
申请人： Stephen August Engel , Ronald Elmer Fuhrhop
发明人： Stephen August Engel , Ronald Elmer Fuhrhop
IPC分类号： B23K7/06 , B23K26/14
CPC分类号： B23K26/1423
摘要： A method and apparatus for making an instantaneous thermochemical start on the surface of a metal workpiece.The method resides in the use of laser beam focused to a small spot to bring the ferrous workpiece to ignition temperature in combination with a high intensity oxygen jet to cause the initiation of the thermochemical reaction. The laser beam may impinge the workpiece at a point about 1 cm behind the spot where the oxygen impinges the workpiece surface to a point about 10 cm ahead of such spot. Accordingly, the laser beam may penetrate the high intensity oxygen jet and still cause the thermochemical reaction to start instantaneously.The apparatus resides in a scarfing machine having a scarfing nozzle, an oxygen spreader nozzle and a laser assembly associated therewith. The oxygen spreader nozzle is mounted so as to provide high intensity oxygen jet on the surface of the workpiece ahead of the scarfing oxygen effluent from the scarfing nozzle. The laser assembly is mounted so that its optical system will direct a laser beam on the surface either ahead or behind the point of impingement of the oxygen jet.
摘要翻译：金属工件表面上的瞬时切割切割可以通过以下方法制成：

3. 发明授权

US4115154A Method and apparatus for producing a post-mixed, stabilized scarfing pre-heating flame 失效
标题翻译：用于生产后混合，稳定的烧结预热火焰的方法和设备
公开(公告)号：US4115154A
公开(公告)日：1978-09-19
申请号：US836512
申请日：1977-09-26
申请人： Ronald Elmer Fuhrhop
发明人： Ronald Elmer Fuhrhop
IPC分类号： B23K7/00 , B23K7/06 , B23K7/08 , B23K7/04
CPC分类号： B23K7/00 , B23K7/06 , B23K7/08
摘要： A process for thermochemically scarfing a metal workpiece comprising:Preheating a spot on the surface of the workpiece where the scarfing reaction is to begin by directing a post-mixed preheating flame at the spot. The preheating flame is formed by:(a) discharging at least one stream of preheat oxidizing gas and at least one stream of preheat fuel gas from separate ports in such a manner that the streams impinge external to their discharge ports, above the work surface and in such manner that the axes of the streams form an acute included angle between them, and(b) stabilizing said preheating flame by discharging a low-intensity stream of oxidizing gas. The stabilizing stream is directed in the same general direction as the direction of the flame and proximate to the impingement of the preheat oxidizing gas and preheat fuel gas streams.Steps (a) and (b) are continued until the spot reaches its oxidizing gas ignition temperature. Thereafter a stream of scarfing oxidizing gas is directed at an acute angle to the work surface at the preheated spot, while simultaneously relative movement is caused between the scarfing oxidizing gas stream and the work surface, thereby producing a scarfing cut.Apparatus suitable for rapidly preheating with a stabilized flame is also disclosed.
摘要翻译：一种用于对金属工件进行热化学切割的方法，包括：

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