B - Operations – Transporting – 22 – F
Patent
B - Operations, Transporting
22
F
B22F 3/26 (2006.01) B22F 3/12 (2006.01) B22F 5/12 (2006.01) C22C 1/04 (2006.01) C22C 33/02 (2006.01)
Patent
CA 2384221
A method of making a relatively small infiltrated ferrous metal product is disclosed. A ferrous metal powder is formed and sintered into a porous product weighing less than 5 ounces. The ferrous metal powder product has a contact surface. A wire or sheet metal infiltrant pre-form is provided. The pre-form is made of a copper-based alloy. The alloy contains elements that reduce the likelihood of erosion of iron in the porous compact. Preferably, the infiltrant pre-form material includes copper and at least about 2.5% iron be weight. A typical pre-form for making this size of product will weigh about 1/2 ounce. The shaped pre-form is placed on the contact surface of the porous metal product. The combination of the infiltrant pre-form and the porous ferrous metal product is heated in a furnace so that at least some of the metal in the infiltrant pre-form infiltrates into the porous metal product to form the infiltrated ferrous metal product. Use of the wire or sheet metal infiltrant pre-form instead of a powder metal infiltrant compact lessens breakage in the snaking of small parts.
Bequette Todd A.
Clark Teresa
Krave Thomas J.
Prucher Thomas
Shank Richard L.
Amsted Industries Incorporated
Gowling Lafleur Henderson Llp
LandOfFree
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