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•
19 Sep 2007
TL;DR: In this article, a method for manufacturing a multi-layer material for metal bearing having excellent physical properties while omitting complicated preparing, sintering and rolling processes of metal powder is provided.
Abstract: A method for manufacturing a multi-layer material for metal bearing having excellent physical properties while omitting complicated preparing, sintering and rolling processes of metal powder is provided. A method for manufacturing a multi-layer material for metal bearing by spray forming comprises the steps of spraying droplets(42) of molten metal(40) to be formed into a bearing layer, and depositing the droplets onto a surface of the backing material at a deposition thickness of 0.5 to 5 mm while transferring a backing material(12) at a transfer speed of 2 to 20 mm/sec. The spraying process of molten metal is performed by discharging molten metal from a lower part of a tundish(50) and spraying the discharged molten metal at a spraying pressure of 4 to 8 bars by using a gas sprayer(60). The method comprises depositing the droplets onto the preheated backing material after preheating the backing material at 800 deg.C or more. The molten metal is a Cu alloy melt, and the backing material is a steel sheet.
2 citations
Patent•
15 Feb 1995
TL;DR: In this paper, a precompact obtained by the spray forming method consists of the Al-Si alloy of 3-45wt.% Si content, and has a density of 95% to true density.
Abstract: PURPOSE: To produce a Al-Si alloy pre-compact low in thermal expansion, excellent in suitability as an electric component material, etc., and capable of plastic working by using spray forming method and to produce a compact low in thermal expansion by using the pre-compact. CONSTITUTION: This pre-compact obtained by the spray forming method consists of the Al-Si alloy of 3-45wt.% Si content, and has a density of 95% to true density. Also oxygen, hydrogen and nitrogen incorporated in the inside of the pre-compact is limited to ≤250ppm, ≤0.4ppm and ≤60ppm respectively. COPYRIGHT: (C)1996,JPO
2 citations
29 Feb 2016
2 citations
TL;DR: In this paper, a numerical program which calculates the temperature profiles of electric arc spray formed (EASF) preforms, is coded on the basis of a shape forming model, droplet flight dynamics, and the boundary fitted coordinate (BFC) method for the calculation of heat transfer equations.
Abstract: A numerical program, which calculates the temperature profiles of electric arc spray formed (EASF) preforms, is coded on the basis of a shape forming model, droplet flight dynamics, and the boundary fitted coordinate (BFC) method for the calculation of heat transfer equations. Some thermophysical input data for the calculations, such as average droplet temperature impinging on the deposit surface, effective thermal conductivity of the deposit, and heat transfer coefficient at the interface and surface, are given by matching the experimental results with the numerical calculation results. Using the program, the temperature changes of the Fe-0 06%C steel ring deposit during the EASF process are calculated. The effects of the EASF parameters, such as substrate rotation velocity, average droplet temperature, and wire feedrate, on the temperature changes of the Fe-0.06%C steel ring preforms are also estimated.
2 citations