High velocity powder thermal spray method for spraying non-meltable
materials
    121.
    发明授权
    High velocity powder thermal spray method for spraying non-meltable materials 失效
    高速粉末热喷涂方法,用于喷涂不可熔材料

    公开(公告)号:US4999225A

    公开(公告)日:1991-03-12

    申请号:US290928

    申请日:1989-01-05

    CPC classification number: B05D1/10 B05B7/205 C23C4/129 B05D2508/00

    Abstract: 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.

    Abstract translation: 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。

    Diffusion coating mixtures
    122.
    发明授权
    Diffusion coating mixtures 失效
    扩散涂料混合物

    公开(公告)号:US4617202A

    公开(公告)日:1986-10-14

    申请号:US310085

    申请日:1981-10-09

    Inventor: Alfonso L. Baldi

    Abstract: Diffusion coatings can be masked from portions of a workpiece by combination of layers the outer one of which forms coherent strong shell that holds inner layer or layers in place. All ingredients of these layers can be materials such as nickel, nickel aluminide, chronium, chromic oxide (Cr.sub.2 O.sub.3) and inert diluent, that do not contaminate superalloys or even low alloy or plain carbon steels. Layer can be deposited from suspension in a solution of film-former like and acrylic resin in readily volatilizable solvent such as methyl chloroform or chloroform. Innermost layer can be depletion-preventing and can be omitted. Such a holding shell can also be used to retain on a workpiece surface a layer that causes formation of a diffusion coating. Chromizing can be performed before aluminizing. Low alloy steel conduit can be internally chromized and/or externally chromized or aluminized to make it more desirable for use as high pressure steam boiler heat exchange tubing. Masking mixtures can be pastes extruded into place. Masking with resin-free masking powder while workpiece is subjected to gas-phase diffusion coating is particularly desirable.

    Abstract translation: 扩散涂层可以通过层的组合从工件的部分掩蔽,其中外层形成保持内层或多层的相干强的外壳。 这些层的所有成分可以是诸如镍,镍铝,时代,氧化铬(Cr 2 O 3)和惰性稀释剂的材料,其不会污染超级合金甚至低合金或普通碳钢。 层可以从成膜剂和丙烯酸树脂的溶液中的悬浮液沉积在容易挥发的溶剂如甲基氯仿或氯仿中。 最内层可以是消耗性的,可以省略。 这种保持壳也可用于在工件表面上保持形成扩散涂层的层。 镀铝前可进行镀铬处理。 低合金钢管可以内部镀铬和/或外部镀铬或镀铝,使其更适合用作高压蒸汽锅炉换热管。 掩模混合物可以将糊料挤出就位。 特别需要在工件进行气相扩散涂覆时用无树脂的掩蔽粉末进行掩模。

    METHOD AND APPARATUS FOR FLAME SPRAYING THERMOPLASTIC POWDERS
    128.
    发明申请
    METHOD AND APPARATUS FOR FLAME SPRAYING THERMOPLASTIC POWDERS 审中-公开
    火焰喷涂热塑性粉末的方法和装置

    公开(公告)号:WO2015056153A1

    公开(公告)日:2015-04-23

    申请号:PCT/IB2014/065268

    申请日:2014-10-13

    Applicant: IBIX S.R.L.

    Abstract: The method for flame spraying thermoplastic powders provides to heat the article to be coated at a suitable working temperature and to feed the said thermoplastic powders transported by an inert gas through inlet (4), a flow of compressed air or nitrogen through inlet (5) and a flow of liquefied petroleum gas through inlet (6), then through respective separated discharge chambers (7, 9, 12) shaped inside a mixing device (1) of a spray gun. The thermoplastic powders are then projected, in a resulting flow (30), on the heated surface of the article to be coated, to determine the melting of the same powders at their contact with said heated surface. At least one couple of flows (31, 32) of compressed air is sprayed converging towards the resulting flow (30) flowing out of the mixing device (1), giving the resulting flow (30) a substantially flattened fan shape. The converging flows (31,32) of compressed air are sprayed by inclined passageways (17,18) located between a first ring of compressed air nozzles (13) and an outside ring of fuel nozzles (14).

    Abstract translation: 用于火焰喷涂热塑性粉末的方法提供了在合适的工作温度下加热要涂覆的制品,并将通过惰性气体输送的所述热塑性粉末通过入口(4),通过入口(5)的压缩空气或氮气流进料, 以及通过入口(6)的液化石油气流,然后通过形成在喷枪的混合装置(1)内部的各自分离的排放室(7,9,12)。 然后将热塑性粉末在所得到的流动(30)中放置在待涂覆的制品的加热表面上,以确定在与所述加热表面接触时相同粉末的熔化。 压缩空气的至少一对流(31,32)被喷射,朝向从混合装置(1)流出的所得流(30)会聚,从而使所得到的流(30)基本上呈扁平的扇形。 压缩空气的会聚流(31,32)由位于第一环形压缩空气喷嘴(13)和燃料喷嘴(14)的外部环之间的倾斜通道(17,18)喷射。

    COMPOSITE POWDERS COMPRISING POLYMERS AND INORGANIC PARTICLES FOR THERMAL SPRAYED COATINGS
    130.
    发明申请
    COMPOSITE POWDERS COMPRISING POLYMERS AND INORGANIC PARTICLES FOR THERMAL SPRAYED COATINGS 审中-公开
    包含聚合物和无机颗粒的复合粉末用于热喷涂

    公开(公告)号:WO2008094682A3

    公开(公告)日:2010-09-16

    申请号:PCT/US2008001347

    申请日:2008-01-31

    CPC classification number: C23C4/12 B05D1/10 C23C4/04 Y10T428/2989

    Abstract: A particle for depositing a coating on a substrate surface by a low temperature thermal spray process having a plastic core and a particulate forming an non- continuous cladding layer around the plastic core so that enough heat can be transferred to the plastic core to cause it to melt but not so much so as to vaporize the plastic core. At the same time the particulate cladding material having a higher melting point does not melt. A particle having an inorganic core clad to a plastic outer layer is also provided. A process for making the clad material and for thermally spraying the clad material is provided. An article coated with the clad material is also provided.

    Abstract translation: 一种用于通过具有塑料芯和在塑料芯周围形成非连续包层的颗粒的低温热喷涂方法在基材表面上沉积涂层的颗粒,使得足够的热量可以转移到塑料芯,使其成为 熔化而不是太多,以便使塑料芯蒸发。 同时具有较高熔点的颗粒包覆材料不会熔化。 还提供了具有包覆在塑料外层的无机芯的颗粒。 提供了制造包层材料并用于热喷涂包层材料的方法。 还提供了涂覆有复合材料的制品。

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