Topic
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.
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Patent•
31 Dec 2008
TL;DR: In this paper, a spraying device for spray forming of a metal blank in an atomizer chamber is described, which consists of a nozzle inside which high pressure inert gas or nitrogen gas is fed; a suspension arm which is used for suspending the nozzle in a spray forming atomizer, and a sediment pan which is arranged at the opposite side of the nozzle at the outside of the metal fluid.
Abstract: The invention relates to a spraying device for spray forming of a metal blank in an atomizer chamber. The device comprises a nozzle inside which high-pressure inert gas or nitrogen gas is fed; a suspension arm which is used for suspending the nozzle in a spray forming atomizer chamber. The spray forming atomizer chamber comprises a crucible for accommodating molten metal, a catheter connected with the crucible; a perforation which is opened at a top cover of the atomizer chamber; a spraying device with the nozzle arranged in the catheter or at the outside of metal fluid; and a sediment pan which is arranged at the opposite side of the nozzle at the outside of the metal fluid. A method for forming various blanks by atomization and deposition is also provided.
10 citations
TL;DR: In this paper, the effects of spray distance on porosity, tensile strength and hardness of sprayed coatings were investigated and it was shown that with an increase in spray distance, shrinkage of the sprayed coating and the maximum temperature in the thermal analysis curve decrease.
Abstract: We investigate flame spraying of pure aluminum and pure zinc powders on various different substrates and study shrinkage properties and thermal analysis curves of sprayed coatings during the forming process. We also examined effects of the spray distance on the porosity, tensile strength and hardness of sprayed coatings, and obtained the following results. With an increase in spray distance, shrinkage of the sprayed coating and the maximum temperature in the thermal analysis curve decrease. When the cooling ability of the substrate is higher, the shrinkage ratio and the maximum temperature become decrease. The porosity and the hardness of a sprayed coating increase with an increase in spray distance. This occurs because with the increase in the spray distance, the temperature of the sprayed particles decreases, the amount of air taken in the spray increases and, as a result, the cooling rate of the coating increases. The tensile strength of a pure aluminum coating decreases with an increase in spray distance due to the introduction of pores. On the contrary, the tensile strength of a pure zinc coating increases with an increase in spray distance. This occurs because when the spray distance is short, coating temperature is high and, as a result, a large quantity of zinc oxide is formed.
10 citations
TL;DR: In this article, a hot compression testing of hot isostatically pressed (HIPed) spray formed (SF) nickel-base superalloy was carried out by thermal mechanical simulator in the temperature range of 1 050-1 140 °C at strain rates of 0.01-10 s −1 and engineering strain of 50%.
10 citations
TL;DR: In this article, the flow stress behavior of an as-spray-deposited AZ31 magnesium alloy with fine grains was investigated by means of compression tests with a Gleeble 1500 thermal mechanical simulator at isothermal constant strain rates.
10 citations
TL;DR: In this article, three kinds of Ni-base repair alloys have been designed and prepared by the spray forming (SF) process, and these alloys were subjected to friction, wear and material analysis tests.
10 citations