Spray forming

About: Spray forming is a research topic. Over the lifetime, 1153 publications have been published within this topic receiving 12869 citations. The topic is also known as: spray casting & spray deposition.

Production of spiral part by spray forming of aluminum alloy

Abstract: PURPOSE:To improve the preform accuracy contriving light weight and excellences in machinability by spraying the molten aluminum alloy contg. Si and other alloy elements by a spraying device and forming the preform of a spiral part by depositing on a mold. CONSTITUTION:The aluminum alloy 1 contg. much amt. of the alloy elements of Si, Fe, etc., is melted inside a melting furnace 2 and held by being flowed into a holding furnace 3 by a trough 4. In the holding furnace 3 the spraying device 6 spraying a molten aluminum alloy by a high pressure gas via a nozzle 5 is provided at the lower part. The spraying particle 7 of the molten aluminum alloy sprayed from the spray device 6 is deposited on the mold supported by a mold transfer device 8 to form a preform 10. Consequently, the structure is refined and uniformized and the mechanical property is improved.

Selectable tap outlet flow adjuster

Abstract: The present invention relates to a selectable tap outlet flow adjustor that is designed to change the water flow from a water tap/ faucet to run or spray. The device comprises: a control disk (5) for selecting the flow state comprising angularly spaced open voids (24) spaced about an axis through which voids water passes when in use; and a spray forming disk (4), the spray forming disk also comprising angularly spaced open running voids (35) spaced about an axis through which voids water may pass when in use but further comprising perforations (34) in those parts of its body between the angularly spaced open voids through which perforations water may pass at a reduced spray rate when in use, the spray forming disk and control disk being axially rotatable with respect to each other whereby when one disk is rotated relative to the other so that the open running voids of the spray forming disk are aligned with the open voids in the control disk, water may pass through at a first flow rate and when one disk is rotated relative to the other so that the perforations in the spray forming disk are aligned with the open voids in the control disk, water may pass through at a second flow rate, less than the first flow rate and as a spray.

Aluminum lithium alloy for spaceflight and method for preparing proximate matter through aluminum lithium alloy

Abstract: The invention relates to an aluminum lithium alloy for spaceflight and an aluminum lithium alloy proximate matter preparing method, and relates to the aluminum lithium alloy and the aluminum lithium alloy proximate matter preparing method. The aim is to solve the problems that the production difficulty of the aluminum lithium alloy is large, and the aluminum lithium alloy strength is low. The aluminum lithium alloy is composed of Mg, Li, Ti, Zr and Al, the Mg accounts for 5.5%-6.5%, the Li accounts for 2.2%-2.5%, the Ti accounts for 0.03%-0.12%, the Zr accounts for 0.15%-0.20%, the Zr+Ti is smaller than or equal to 0.25%, and the balance is the Al. The method includes the steps of raw material weighing, aluminum alloy molten liquid preparing, refining, spray forming, short bar cutting, blind die extrusion, heat extrusion, quenching, tension leveling and aging treatment. According to the aluminum lithium alloy and the aluminum lithium alloy proximate matter preparing method, through spray forming, the problems that the aluminum lithium alloy production difficulty is large, and the quality is poor are solved, the strength of extension reaches 485 Mpa, the ruled non-proportional extending strength reaches 345 Mpa, the percentage elongation after fracture reaches 10.0%, and blind die extrusion enables a casting ingot to be more compact.

Method for improving recrystallization temperature of spray-formed 7xxx-series aluminum alloy by adding microelement Sc

Abstract: The invention discloses a method for improving a recrystallization temperature of a spray-formed 7xxx-series aluminum alloy by adding a microelement Sc. A 7xxx-series aluminum alloy deposit ingot blank containing the microelement Sc is prepared by a spray forming technology under the atmosphere of a protective gas. The method comprises the following steps: putting the 7xxx-series aluminum alloy deposit ingot blank containing the microelement Sc into a hot extrusion die with a certain inner cavity shape; and carrying out densified hot extrusion, so as to obtain an aluminum alloy part which corresponds to the inner cavity shape of the hot extrusion die. According to the method disclosed by the invention, the recrystallization phenomenon which is easily generated by the spray-formed 7xxx-series aluminum alloy in hot machining and thermal treatment processes is avoided; the trend of fine grain coarsening is effectively reduced; and the technological process is simple.

Method and arrangement for implementing heat treatment during the execution of spray-form techniques

Abstract: A method for implementing post-heat treatment during spray forming to achieve stress control in the manufacture of a spray formed metallic tool involves applying a metallic spray-forming material onto a mold substrate and causing substantially homogenous metallic phase transformations from the austenite phase, for example, via manipulation of either or both of the substrate temperature and the spray forming cell environment temperature.