公开(公告)号：US06174491B1

公开(公告)日：2001-01-16

申请号：US09156992

申请日：1998-09-18

申请人： Stephen A. Engel

发明人： Stephen A. Engel

IPC分类号： B23K706

CPC分类号： B23K7/06

摘要： 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 face (46) of the lower block. A gas discharge outlet (56) is defined within the front face of the block. The extension may partially overlie the gas discharge outlet such that a gas discharge orifice (70) is defined in the front face of the block by the extension. The extension includes an upper face (58) which extends forwardly from the front face of the block, and is recessed with respect to an upper face (41) of the block. So constructed, when a sheet-like oxidizing gas flow (82) is passed over the upper faces of the block and the extension, respectively, and as a fuel gas (85) is emitted through the gas discharge outlet, the fuel gas is pneumatically compressed between the oxidizing gas flow and the upper face of the extension such that the fuel gas is substantially uniformly distributed along the longitudinal length of the lower pre-heat block assembly and forms a uniform sheet-like fuel gas flow (90) which underlies and adjoins the sheet-like oxidizing gas flow so as to prevent ambient air from aspirating into the oxidizing gas flow and thereby result in a smooth and uniformly scarfed surface on the metal workpiece.

摘要翻译： 公开了一种与金属切割设备（5）一起使用的下部预热块组件（9）。 下部预热块组件具有与下部块的前表面（46）接合并且与下部块的前表面（46）相接合的下部块（38）和延伸部（39）。 气体排出口（56）限定在块体的前表面内。 延伸部可以部分地覆盖气体排出口，使得气体排出孔（70）通过延伸部限定在块的前表面中。 所述延伸部包括从所述块的前表面向前延伸并相对于所述块的上表面（41）凹陷的上表面（58）。 如此构成，当板状氧化气体流（82）分别通过块体和延伸部分的上表面时，并且当燃气（85）通过气体排出口排出时，燃料气体是气动的 压缩在氧化气体流和延伸部的上表面之间，使得燃料气体沿着下预热块组件的纵向长度基本均匀分布，并形成均匀的片状燃料气流（90） 邻接片状氧化气体流动，以防止环境空气吸入氧化气体流中，从而在金属工件上产生光滑均匀的切割表面。

公开(公告)号：US4243436A

公开(公告)日：1981-01-06

申请号：US91162

申请日：1979-11-05

申请人： Stephen A. Engel

发明人： Stephen A. Engel

IPC分类号： B23K7/06 ,  B23K7/00

CPC分类号： B23K7/06

摘要： A process for spot scarfing the surface of a metal workpiece comprising:(a) impinging a stream of pilot oxygen gas upon a portion of the workpiece which is at least at its oxygen ignition temperature, said stream of pilot oxygen gas being narrower than the width of a desired scarfing cut,(b) causing relative motion between said workpiece and said stream of pilot oxygen gas, so as to continuously produce a pilot puddle of molten metal along a chosen path on the surface of the workpiece,(c) contacting said pilot puddle with a high intensity stream of oxygen gas so as to spread the puddle to a preselected width when said puddle reaches an area to be spot scarfed on the surface of said workpiece, and(d) scarfing said area by impinging a stream of scarfing oxygen gas on the spread puddle, said stream of scarfing oxygen gas being wider than the pilot oxygen stream.

摘要翻译： 一种用于对金属工件的表面进行点蚀的方法，包括：（a）将引燃氧气流冲击到至少处于其氧点火温度的工件的一部分上，所述引导氧气流窄于所述工件的宽度 （b）引起所述工件和所述先导氧气流之间的相对运动，以便沿着所述工件表面上的选定路径连续地产生熔融金属的导向熔池，（c）使所述工件 当所述水坑达到要在所述工件的表面上被斑点的区域时，将所述水坑扩展到预定宽度，以及（d）通过冲击所述区域的边缘，将所述区域与所述区域相冲切， 氧气在扩散的水坑上，所说的氧气气流比先导氧气流宽。

公开(公告)号：US06440229B1

公开(公告)日：2002-08-27

申请号：US09620420

申请日：2000-07-20

申请人： Stephen A. Engel

发明人： Stephen A. Engel

IPC分类号： B23K700

CPC分类号： B23K7/06

摘要： 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 face (46) of the lower block. A gas discharge outlet (56) is defined within the front face of the block. The extension may partially overlie the gas discharge outlet such that a gas discharge orifice (70) is defined in the front face of the block by the extension. The extension includes an upper face (58) which extends forwardly from the front face of the block, and is recessed with respect to an upper face (41) of the block. So constructed, when a sheet-like oxidizing gas flow (82) is passed over the upper faces of the block and the extension, respectively, and as a fuel gas (85) is emitted through the gas discharge outlet, the fuel gas is pneumatically compressed between the oxidizing gas flow and the upper face of the extension such that the fuel gas is substantially uniformly distributed along the longitudinal length of the lower pre-heat block assembly and forms a uniform sheet-like fuel gas flow (90) which underlies and adjoins the sheet-like oxidizing gas flow so as to prevent ambient air from aspirating into the oxidizing gas flow and thereby result in a smooth and uniformly scarfed surface on the metal workpiece.

摘要翻译： 公开了一种与金属切割设备（5）一起使用的下部预热块组件（9）。 下部预热块组件具有与下部块的前表面（46）接合并且与下部块的前表面（46）相接合的下部块（38）和延伸部（39）。 气体排出口（56）限定在块体的前表面内。 延伸部可以部分地覆盖气体排出口，使得气体排出孔（70）通过延伸部限定在块的前表面中。 所述延伸部包括从所述块的前表面向前延伸并相对于所述块的上表面（41）凹陷的上表面（58）。 如此构成，当板状氧化气体流（82）分别通过块体和延伸部分的上表面时，并且当燃气（85）通过气体排出口排出时，燃料气体是气动的 压缩在氧化气体流和延伸部的上表面之间，使得燃料气体沿着下预热块组件的纵向长度基本均匀分布，并形成均匀的片状燃料气流（90） 邻接片状氧化气体流动，以防止环境空气吸入氧化气体流中，从而在金属工件上产生光滑均匀的切割表面。

公开(公告)号：US5497976A

公开(公告)日：1996-03-12

申请号：US375418

申请日：1995-01-18

申请人： Michael S. Showalter ,  David L. Pierce ,  Stephen A. Engel ,  Raymond C. Smith

发明人： Michael S. Showalter ,  David L. Pierce ,  Stephen A. Engel ,  Raymond C. Smith

IPC分类号： F23D14/20 ,  B23K7/06

CPC分类号： B23K7/06

摘要： A lower block assembly for a thermochemical scarfing apparatus which comprises a base member and an extension releasably joined to the base member. The extension includes a continuous slot across its longitudinal length for delivering a stream of fuel gas onto the metal workpiece during the scarfing operation, and the base member and extension include a gas delivery system for delivering fuel gas to the slot at a substantially uniform rate along the entire longitudinal length of the slot and so as to achieve a uniform scarfing operation and a smooth scarfed surface across the width of the workpiece.

摘要翻译： 一种用于热化学切割设备的下部块组件，其包括基部构件和可释放地接合到基座构件的延伸部。 该延伸部包括横跨其纵向长度的连续槽，用于在熨烫操作期间将燃料气体流输送到金属工件上，并且基部构件和延伸部包括气体输送系统，用于以大致均匀的速率将燃料气体输送到槽 槽的整个纵向长度，从而实现了整个工件宽度上均匀的切割操作和平滑的切割表面。

公开(公告)号：USRE32511E

公开(公告)日：1987-09-29

申请号：US139450

申请日：1980-04-11

申请人： Stephen A. Engel ,  Ronald E. Fuhrhop

发明人： Stephen A. Engel ,  Ronald E. Fuhrhop

IPC分类号： B23K7/06 ,  B23K26/14 ,  B23K26/36

CPC分类号： B23K26/1423 ,  B23K26/364 ,  B23K7/06

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.

公开(公告)号：US4287005A

公开(公告)日：1981-09-01

申请号：US121606

申请日：1980-03-04

申请人： Stephen A. Engel

发明人： Stephen A. Engel

IPC分类号： B23K7/06 ,  B23K7/00

CPC分类号： B23K7/06

摘要： A method for spot scarfing a metal workpiece comprising continuously producing a pilot puddle on the surface of the workpiece, spreading the pilot puddle to a preselected width with a high intensity stream of oxygen gas, and impinging a stream of scarfing oxygen gas on the spread puddle and an apparatus to practice same.

摘要翻译： 一种用于对金属工件进行点焊的方法，包括在工件的表面上连续地生产导向熔池，将先导熔池以高强度的氧气流扩展到预先选定的宽度，并将熔化的氧气流冲击在扩散的熔池上 以及实践相同的装置。