Abstract:
A pump having a rotor that is rotatable about a rotation axis and comprises a rotor hub and a rotor collar that extends from the rotor hub in the radial direction and encircles it in an undulating manner, and a pump housing which comprises a first axial housing component, a central annular housing component and a second axial housing component, wherein a pump duct is formed in the axial direction by the first and second housing components and in the radial direction by the central annular housing component and the rotor, and also a pump in which the annular pump duct has a constant cross section and connects a first radially external inlet/outlet space to a second radially external inlet/outlet space, and the pump may include a blocking device which is arranged between the first radially external inlet/outlet space and the second radially external inlet/outlet space and which comprises a blocking element which blocks the pump duct in the axial direction on both sides of the rotor collar.
Abstract:
A hydraulic linear actuator system known as the “Dynaco Stepper Pump Hydraulics System” is which is an electrically driven hydraulic pump system made of durable materials for use in an electronically controllable hydraulic system comprised of: (a) an electrically driven stepper motor; (b) a hydraulic pump to pressurize a hydraulic fluid; (c) a means to connect the stepper motor to the hydraulic pump; (d) a pressurized reservoir for a quantity of hydraulic fluid; (e) a means to supply pressurized fluid to a hydraulic actuator; (f) the hydraulic actuator with a means to provide linear motion to an object; (g) the means to provide linear motion to an object; (h) a means to return lowered pressurized fluid to the reservoir. An alternative embodiment is further comprised of a controller with a series of feedback signals.
Abstract:
The invention relates to a high-pressure compressor of a gas turbine having at least one blisk, specifically a disk with a plurality of blades that are disposed on the disk, wherein the blisk has at least one titanium material from the group that comprises Ti-6246 and Ti-6242, wherein the materials of the disk and the blades of the blisk differ in their chemical composition and/or their microstructure. The blades are welded to the disk, in particular, by means of a pressure welding method supported by high-frequency current, whereby the current is conducted through the joint surfaces and leads to local limited melting therein.
Abstract:
A method for selectively removing one or more coatings from the surface of a substrate is described. The coating is treated with an aqueous composition which includes an acid of the formula HxAF6, or precursors to such an acid. In that formula, A is Si, Ge, Ti, Zr, Al, and Ga; and x is 1-6. The acid is often H2SiF6. The composition may sometimes include at least one additional acid, such as phosphoric acid. The coating being removed is often an aluminide coating or an MCrAl(X)-type material. The substrate is usually a polymer or a metal, such as a superalloy.
Abstract translation:描述了从衬底的表面选择性地去除一个或多个涂层的方法。 用包含式H x F 6的酸或这种酸的前体的含水组合物处理该涂层。 在该式中,A是Si,Ge,Ti,Zr,Al和Ga; x为1-6。 酸通常是H2SiF6。 组合物有时可以包括至少一种另外的酸,例如磷酸。 被去除的涂层通常是铝化物涂层或MCrAl(X)型材料。 基底通常是聚合物或金属,例如超级合金。
Abstract:
A compressor, which is adapted for use in an air-conditioning system of a motor vehicle, having a housing (2) and a compressor unit (1) arranged in the housing (2) for drawing in and compressing a coolant. The structural size of the compressor is reduced, while sufficient compressor capacity is ensured, as a result of manufacturing the housing (2) from a high-strength material and using a gas that has a high density even in the drawn-in state as the coolant.
Abstract:
A corrosion resistant cermet comprises a ceramic component (e.g., WC) and a binder alloy comprised of a major component (e.g., one or more of iron, nickel, cobalt, their mixtures, and their alloys) and at least one additive component (e.g., one or more of ruthenium, rhodium, palladium, osmium, iridium, and platinum). Plungers for hyper compressors used in the corrosive environments generated during the manufacture of low density polyethylene (LDPE) or ethylene copolymers are an example of the use of the corrosion resistant cermet.
Abstract:
A vane rotary pneumatic pump where surface treatment is applied to a metal material portion facing a pump space (18). This prevents water from adhering on a metal surface, enabling rusting to be prevented even when air with high humidity flows into the pump space (18). A vane rotary pneumatic pump using plate-like vanes (12) made from a material having self-lubricating capability, wherein gaps are provided between a rotor (8) and a front plate (14) and between the rotor (8) and an end plate (16) so as to prevent contact sliding, and surface treatment using one of an alumite film, nickel-phosphorus plating film, and Teflon film or a combination of them is applied to the metal material portion facing the pump space (18).
Abstract:
A magnesium - rare earth - yttrium - zinc alloy consists of 0.2-1.5% by weight zinc and rare earth(s) (RE) and yttrium in amounts which fall within a quadrangle defined by lines AB, BC, CD and DA wherein: A is 1.8% RE - 0.05% Y, B is 1.0% RE - 0.05% Y, C is 0.2% RE - 0.8% Y, and D is 1.8% RE - 0.8% Y.