Method and apparatus for producing a lightweight metal alloy
a metal alloy and powder metallurgy technology, applied in the direction of coatings, etc., can solve the problems of reducing overall production throughput, increasing power consumption costs, and limiting overall manufacturing productivity
Inactive Publication Date: 2011-05-05
HONG KONG PRODUCTIVITY COUNCIL
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Benefits of technology
The present invention provides a method of forming a metal alloy from a powder composition using rapid thermal processing (RTP) to sinter the powder composition. The powder composition includes first particles, second particles, and third particles. The first particles are inter-metallic compounds, such as TiAl3 particles. The second particles are aluminum particles, and the third particles are titanium particles. The method involves heating the powder composition up to a temperature within a range of 700-800° C for a period of time within a range of 0-10 seconds. The powder composition can also be cold-pressed before sintering. The metal alloy formed by this method has small particles with diameters of approximately 10 μm. The invention also provides a powder composition adapted for processing by the method steps of the invention, a metal alloy formed in accordance with the method steps, and metal alloy automotive components and implantable medical components formed in accordance with the method.
Problems solved by technology
Consequently, the relatively long sintering times tends to decrease overall production throughput and increase power consumption costs.
This also places a limitation upon overall manufacturing productivity and raises production costs.
Method used
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Embodiment Construction
[0056]Preferred embodiments of the present invention will now be described below with reference to the accompanying drawings.
[0057]In accordance with a first embodiment of the present invention, a method is provided for forming a metal alloy from a powder composition comprising TiAl3, Al and Ti particles. The proportion of inter-metallic TiAl3 particles comprises between 20-90% by weight of the powder composition. The remainder of the powder composition is comprised approximately 95% by weight of Al particles and 5% by weight of Ti particles. FIG. 30 shows a flowchart representing method steps in accordance with the first embodiment method which will be described in further detail herein.
[0058]FIG. 27 shows a chart of weight percentages of Aluminium particles in the powder compositions suitable for use in forming a metal alloy in accordance with the first embodiment method charted against suitable sintering temperatures used to form the metal alloy.
[0059]A series of four sample powd...
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Abstract
A method of forming a metal alloy from a powder composition comprising first particles in a range of approximately 20-90% by weight of the powder composition, the remainder of the powder composition comprising approximately 95% by weight of second particles and 5% by weight of third particles, wherein the method includes the step of using rapid thermal processing (RTP) to sinter the powder composition.
Description
TECHNICAL FIELD[0001]The present invention relates to a powdered metallurgy method and apparatus for producing a lightweight metal alloy suitable for instance in producing a automotive components and / or implantable medical components.BACKGROUND OF THE INVENTION[0002]The use of metal alloys is common in the manufacture of automotive components such as valves, valve seats, pistons and the like. Similarly, metal alloys have found commercial application in the field of implantable medical components and devices such as prosthetics and stents due to being relatively lightweight and having suitably durable properties.[0003]Conventional processes and systems for commercial production of such metal alloy components have tended to involve relatively long sintering times in order for the metal alloy materials to exhibit suitable properties such as wear resistance, and hardness. Consequently, the relatively long sintering times tends to decrease overall production throughput and increase power...
Claims
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IPC IPC(8): B22F1/00B22F3/10
CPCB22F1/0003B22F3/1003B22F3/105B22F2998/10B22F2999/00C22C1/0491C22C21/00B22F3/02B22F3/10B22F2202/11B22F2202/13B22F1/00C22C1/047B22F1/09
Inventor SIAK, JUNE-SANGSHEK, CHAN HUNGCHUNG, CHI YUENIP, WAI-LAM RALPHCHEUNG, TIK LAM
Owner HONG KONG PRODUCTIVITY COUNCIL