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    • 4. 发明授权
    • Nozzle construction for a gas torch
    • 气体喷枪喷嘴施工
    • US4384677A
    • 1983-05-24
    • US219226
    • 1980-12-23
    • Anthony J. Rotolico
    • Anthony J. Rotolico
    • B05B7/20F23D14/52F23D14/82B05B7/06
    • B05B7/205F23D14/52F23D14/82
    • The invention contemplates improved nozzle structure removably securable to a gas-distributor body for delivering and discharging independent flows of combustible-gas mixture and of powder material to be flame-sprayed by a gas torch to which the nozzle is fitted. The combustible-gas mixture is successively accommodated in annular manifold regions of relatively large sectional area, respectively upstream and downstream from an intermediate annular manifold region of relatively restricted sectional area, for inhibiting flash-back to the gas distributor and for effectively limiting any flash-back effects to the manifold region downstream of the annular restriction.
    • 本发明考虑到改进的喷嘴结构可拆卸地固定到气体分配器主体,用于输送和排出可燃气体混合物的独立流,以及由喷嘴安装到其上的气体喷枪喷射的粉末材料。 可燃气体混合物连续地容纳在相对受限制的截面积的中间环形歧管区域的相对大截面积的环形歧管区域中,分别在中间环形歧管区域的上游和下游,用于阻止闪回气体分配器并且有效地限制任何闪蒸 - 对环形限制下游的歧管区域的反作用。
    • 6. 发明授权
    • High velocity powder thermal spray method for spraying non-meltable
materials
    • 高速粉末热喷涂方法,用于喷涂不可熔材料
    • US4999225A
    • 1991-03-12
    • US290928
    • 1989-01-05
    • Anthony J. RotolicoBurton A. KushnerAmr Aly
    • Anthony J. RotolicoBurton A. KushnerAmr Aly
    • B05B7/20B05D1/10C23C4/12
    • B05D1/10B05B7/205C23C4/129B05D2508/00
    • A method for producing a dense and tenacious coating with a thermal spray gun including a nozzle member and a gas cap. The gas cap extends from the nozzle and has an inwardly facing cylindrical wall defining a combustion chamber with an open end and an opposite end bounded by the nozzle. An annular flow of a combustible mixture is injected at a pressure of at least two bar above atmospheric pressure from the nozzle coaxially into the combustion chamber. An annular outer flow of pressurized air is injected from the nozzle adjacent to the cylindrical wall. Powder particles having a heat-stable, non-fusible component and a heat-softenable component, and entrained in a carrier gas, are fed axially from the nozzle into the combustion chamber. An annular inner flow of pressurized air is injected from the nozzle into the combustion chamber coaxially between the combustible mixture and the powder-carrier gas. Upon combusting the annular mixture a supersonic spray stream containing the powder is propelled through the open end to produce a coating.
    • 一种用包括喷嘴构件和气帽的热喷枪制造致密且韧性的涂层的方法。 气帽从喷嘴延伸并且具有限定具有开口端和由喷嘴限定的相对端的燃烧室的面向内的圆柱形壁。 将可燃混合物的环形流在高于大气压的至少2巴的压力下从喷嘴同轴地注入燃烧室中。 加压空气的环形外部流体从邻近圆柱形壁的喷嘴喷射。 具有热稳定的非易熔组分和可热软化组分并夹带在载气中的粉末颗粒从喷嘴轴向地进入燃烧室。 加压空气的环形内部流体从喷嘴喷射到可燃混合物和粉末载体气体之间同轴的燃烧室中。 在燃烧环形混合物时,含有粉末的超音速喷射流通过开口端被推进以产生涂层。
    • 7. 发明授权
    • Device for the controlled feeding of powder material
    • 用于控制饲料粉末的装置
    • US4381898A
    • 1983-05-03
    • US226756
    • 1981-01-21
    • Anthony J. RotolicoEduardo RomeroJohn E. Lyons
    • Anthony J. RotolicoEduardo RomeroJohn E. Lyons
    • B01J8/00B05B7/14H05H1/42B65G53/40
    • B05B7/1404B01J8/001B01J8/0015H05H1/42
    • The invention contemplates a powder-feeding system for gas-propelled delivery of a powder to be controllably supplied, as to a flame-spraying gas torch or to a transferred-arc plasma torch. A fluidizing chamber receives (a) fluidizing-gas flow from below a porous screen, and (b) a restricted gravitational flow of powder at a relatively small central discharge location above the porous screen. A gas conduit extends transversely through the chamber between the powder-discharge location and the porous screen; it has a carrier-gas supply connection at one end and a gas-propelled powder-delivery connection at its other end. The conduit also has an upwardly extending opening virtually beneath and facing the powder-discharge location, but a shed interposed between this opening and the powder-discharge location sufficiently overlaps the opening to assure that no powder will pass through the opening and into the conduit unless it has been gas-fluidized. The powder-discharge flow is blocked to gas flow when powder is being delivered by the carrier-gas flow, but the powder delivery is terminated promptly upon gas-venting the fluidizing chamber, via the powder-discharge flow or otherwise.
    • 本发明考虑了用于气体推进输送可控制地供应的粉末的粉末馈送系统,关于火焰喷射气体割枪或转移电弧等离子体焰炬。 流化室接收(a)来自多孔筛网下方的流化气体流,和(b)在多孔筛网上方相对小的中心排放位置处的粉末受限制的重力流。 气体管道横向延伸穿过粉末 - 放电位置和多孔筛网之间的腔室; 它的一端具有载气供应连接,另一端具有气体推进的粉末输送连接。 导管还具有一个向上延伸的开口,实质上位于粉末排放位置的下方并面向粉末排出位置,但是插入该开口和粉末 - 排放位置之间的一个插槽与该开口充分重叠,以确保没有粉末将通过该开口并进入导管,除非 它已被气体流化。 当粉末通过载气流传送时,粉末排放流被阻塞以进入气流,但是在通过粉末排放流或其它方式气化气化室时,粉末输送被迅速地终止。