摘要:
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.
摘要:
The present invention relates to a method of spray forming a boron steel metal article, and to the formed article. In at least one embodiment, the method comprises (a) providing a spray forming pattern, (b) spraying metallic particles onto the spray forming pattern, and (c) allowing the sprayed metallic particles to cool to form a metal article. In at least one embodiment, the metallic particles are sprayed from a carbon steel feedstock having a boron content of 0.25-2.25 weight percent, based on the total weight of the feedstock.
摘要:
A method and arrangement for implementing post-heat treatment after spray forming is ended to achieve stress control in the manufacture of a spray formed metallic tool involves providing a spray-formed metallic tool by applying a spray-forming material on a mold substrate and causing substantially homogenous metallic phase transformations of the spray forming material within the spray-formed metallic tool to a substantially homogenous distribution of commingled metallic phases consisting, for example, of predetermined proportions of at least a bainite phase and a martinsite phase.
摘要:
The present invention relates to a method of spray forming a boron steel metal article, and to the formed article. In at least one embodiment, the method comprises (a) providing a spray forming pattern, (b) spraying metallic particles onto the spray forming pattern, and (c) allowing the sprayed metallic particles to cool to form a metal article. In at least one embodiment, the metallic particles are sprayed from a carbon steel feedstock having a boron content of 0.25-2.25 weight percent, based on the total weight of the feedstock.
摘要:
A process for producing a metallic tool, mould, die or other body of significant thickness or a coating, the process comprising directing a spray (3, 4) comprising molten metallic droplets carried by a propelling gas toward an object surface (7) of a substrate or pattern (5) so as to build up a metallic deposit or coating comprising the mould, tool, die, body or coating on the object surface (7) of the substrate or pattern (5), wherein at one or more predetermined stages during spraying droplets of a relatively large mean size are sprayed and at one or more other stages droplets or a relatively smaller mean size are sprayed.
摘要:
A facsimile of article to be produced by tooling is laid in register with a first tooling part and sprayed metallic material is deposited over the first tooling part and the facsimile of the article in order to form a second tooling part. The first tooling part typically comprises a metallic material and portions of the first and second tooling parts bounding the article facsimile are typically in metal to metal contact with one another. The tooling parts are separated and the article facsimile removed.
摘要:
Porous regions or void regions of spray deposited articles of one composition are infilled with molten material of a differing composition which subsequently solidifies. The molten material flows to infill the porous or void regions under the influence of applied pressure or capillary type action. Typically, the sprayed material is molten metallic material, and the void porosity filling material is also metallic in composition but having a lower melting point.