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    Contour-abrasion means and method
    41.
    发明授权
    Contour-abrasion means and method 失效
    轮廓研磨方法和方法

    公开(公告)号：US3685219A

    公开(公告)日：1972-08-22

    申请号：US3685219D

    申请日：1970-12-04

    Applicant: CHROMALLOY AMERICAN CORP

    Inventor： PALMENBERG EDWARD C

    IPC: B24B21/00 ,  B24B1/00 ,  B24B21/10 ,  B24B21/16

    CPC classification number: B24B21/165

    Abstract: The invention comprises abrading a work surface to desired contour by using a continuously driven endless abrasive belt in the region of passage over a thin air-film or cushion by which the belt is locally supported and shaped at a suitably contoured platen. The platen is air-permeable and is supplied with a continuous flow of pressurized air from within, being directed at the inner surface of the belt, and over the entire region of belt support by the platen. The platen is contoured for the particular finished work contour to be achieved. Various features of worksupport and work-feeding are described.

    Temper resistant chromium-containing titanium carbide tool steel
    42.
    发明授权
    Temper resistant chromium-containing titanium carbide tool steel 失效
    耐温铬含量的碳化钛工具钢

    公开(公告)号：US3653982A

    公开(公告)日：1972-04-04

    申请号：US3653982D

    申请日：1969-12-18

    Applicant: CHROMALLOY AMERICAN CORP

    Inventor： PRILL ARNOLD LOUIS

    IPC: C22C29/06 ,  C22C29/10 ,  C22C38/00 ,  C22C38/22 ,  C22C39/14 ,  B22F3/24

    CPC classification number: C22C29/067 ,  C22C38/22

    Abstract: A heat treatable, temper resistant, chromium-containing, carbidic tool steel having a total carbon content of at least about 6 percent by weight is provided comprising about 25 to 75 percent by volume of primary carbide grains of essentially titanium carbide distributed through a heat treatable steel matrix containing by weight about 6 to 12% chromium, about 0.6 to 1.2% carbon, about 0.5 to 5% molybdenum, 0 to 5% tungsten, the total tungsten and molybdenum content not exceeding about 5%, 0 to 2% vanadium, 0 to 3% nickel, 0 to 5% cobalt, 0 to 1.5% silicon, 0 to 2% manganese and the balance essentially iron, the ratio by weight of chromium to carbon in the steel matrix ranging from about 7:1 to 25:1, the steel matrix surrounding the primary carbide grains being characterized by a microstructure comprising an austenitic decomposition product.

    Abstract translation: 提供总碳含量为至少约6重量％的可热处理，耐回火，含铬的碳化物工具钢，其包含约25至75体积％的基本上碳化钛的一次碳化物颗粒，其通过热处理 含有重量约6〜12％的铬，约0.6〜1.2％的碳，约0.5〜5％的钼，0〜5％的钨，总钨和钼含量不超过约5％，钒含量为0〜2％ 0至3％的镍，0至5％的钴，0至1.5％的硅，0至2％的锰，余量基本为铁，钢基体中铬与碳的重量比为约7：1至25： 如图1所示，围绕初级碳化物颗粒的钢基体的特征在于包含奥氏体分解产物的微结构。

    Method of producing crack-free electron beam welds of jet engine components
    44.
    发明授权
    Method of producing crack-free electron beam welds of jet engine components 失效
    喷射发动机零件无裂纹电子束的生产方法

    公开(公告)号：US3617685A

    公开(公告)日：1971-11-02

    申请号：US3617685D

    申请日：1970-08-19

    Applicant: CHROMALLOY AMERICAN CORP

    Inventor： BRILL-EDWARDS HARRY W ,  ZAHABI FEREIDOON

    IPC: B23K15/00 ,  B23K35/00 ,  F01D9/04

    CPC classification number: F01D9/044 ,  B23K15/0006 ,  B23K35/004

    Abstract: Crack-free welds of jet engine components formed essentially of a heat resistant nickel-base alloy having a tendency to be weldcrack sensitive are produced by abutting selected surface of at least a pair of structural elements of said nickel-base alloy, the elements being assembled in welding relationship with an iron-base shim therebetween, the elements being electron beam welded together into a unitary structure by melting the iron-base shim at the interface of the abutting surfaces, whereby the resulting weld which is an alloy of the iron-base shim and the nickel-base alloy is crack-free.

    Method and apparatus for mass emission sampling of motor vehicle exhaust gases
    45.
    发明授权
    Method and apparatus for mass emission sampling of motor vehicle exhaust gases 失效
    电动汽车排气气体排放采样方法与装置

    公开(公告)号：US3603155A

    公开(公告)日：1971-09-07

    申请号：US3603155D

    申请日：1970-02-02

    Applicant: CHROMALLOY AMERICAN CORP

    Inventor： MORRIS CHARLES WILLIAM ,  ULYATE JOHN RAYMOND

    IPC: G01M15/10 ,  G01N1/22 ,  G01N33/00

    CPC classification number: G01N33/0011 ,  G01M15/102 ,  G01N1/2247 ,  Y10S55/30

    Abstract: An air blower draws a mixture of exhaust gases emitted from an internal combustion engine and ambient air through a through-flow duct having a valve means therein at a minimum volumetric flow rate for the mixture in excess of the maximum volumetric flow rate the engine is capable of emitting while a proportional sample of said total mixture is withdrawn into a sample container at a uniform volumetric rate during a test period, the sample thereafter being analyzed to determine the concentration of pollutants of gas constituents therein and compared with the concentration of such pollutants or gas constituents in the ambient air which is sampled concurrently at the same flow rate from an area adjacent that where the ambient air is drawn into the through-flow conduit, total mass or weight of such pollutants or constituents being calculable from the concentration thereof in said sample and the known total mass or weight of air and gas mixture drawn through the duct. Temperature sensing and transducer means produce a first or error signal which is a function of the temperature of gases flowing through said duct, volumetric flow rate sensing means and associated transducer means produce a second signal which is a function of volumetric gas flow through the duct and electrical circuit means are provided in association therewith to cause said second signal to modify said first signal to produce a control signal which causes operation of a servomotor to adjust the valve means until an actual required volumetric flow rate through the duct is attained for any given temperature thereof to maintain a constant mass or weight flow, said actual volumetric flow rate for said gases increasing with increasing gas temperatures above a standard initial flow rate for a standard temperature condition. Circuitry is provided for a system for maintaining constant the rate of mass flow of a gas through a conduit despite temperature changes. The system generates an error signal linear with the absolute temperature of the gas, generates a second signal which is linear with differential pressure across a fixed orifice in the conduit, and thus with velocity of flow therein, modifies the error signal by the second signal to produce a command signal of appropriate polarity to adjust the velocity of gas flow in an inverse feedback manner by controlling a throttling valve in the conduit.

    Corrosion resistant coating system for ferrous metal articles having brazed joints
    50.
    发明授权
    Corrosion resistant coating system for ferrous metal articles having brazed joints 失效
    具有钎焊接头的黑色金属制品的耐腐蚀涂层系统

    公开(公告)号：US3922396A

    公开(公告)日：1975-11-25

    申请号：US50904974

    申请日：1974-09-25

    Applicant: CHROMALLOY AMERICAN CORP

    Inventor： SPEIRS KENNETH K ,  WEINSTEIN MARTIN ,  DEAN MICHAEL F

    IPC: C23C10/02 ,  B44D1/14 ,  C03C7/02 ,  C23C9/02 ,  C23D5/04 ,  C23F17/00

    CPC classification number: C23C10/02

    Abstract: Ferrous metal articles, such as stainless steel aircraft components, e.g. turbine vanes, vane/shrouds and the like, characterized by at least one brazed joint, in which the braze is a non-ferrous alloy are aluminized by first uniformly plating onto the entire surface of said articles including the braze, a coating of an aluminide-forming metal selected from the group consisting of iron, nickel, cobalt and chromium and then thermally diffusing aluminum over the entire surface of the article, including the braze, such that a sacrificial corrosion resistant coating is produced characterized by the presence of an aluminide compound selected from the group consisting of iron aluminide, nickel aluminide, cobalt aluminide and chromium aluminide. The aluminide coatings are further enhanced by the application of a non-metallic coating, e.g a conversion coating.

    Abstract translation: 黑色金属制品，例如不锈钢飞机部件，例如 涡轮叶片，叶片/护罩等，其特征在于至少一个钎焊接头，其中钎焊是有色金属合金，通过首先均匀地镀在包括钎焊的所述制品的整个表面上而被镀铝， 选自铁，镍，钴和铬的金属，然后在包括钎焊的制品的整个表面上热扩散铝，使得产生牺牲耐腐蚀涂层，其特征在于铝化合物的存在 选自铁铝化物，镍铝化物，钴铝化物和铬铝化物。 通过施加非金属涂层，例如转化涂层，铝化物涂层进一步增强。

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