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公开(公告)号：US20180169751A1
公开(公告)日：2018-06-21
申请号：US15844277
申请日：2017-12-15
发明人： Philippe BEAULIEU , Denis B. CHRISTOPHERSON, JR. , Leslie John FARTHING , Gilles L'ESPERANCE , Olivier SIOUI-LATULIPPE
摘要： A thermometric powder metal material for testing to replicate an actual powder material during use of the actual powder metal material in an internal combustion engine is provided. The thermometric powder metal material includes pores and has a decrease in hardness as a function of temperature according to the following equation: D Hardness/D Temperature=>0.5 HV/° C. The properties of the actual powder metal material, when the actual powder metal is used in an internal combustion engine, can be estimated using the thermometric powder metal material by first adjusting the thermal conductivity of the thermometric powder metal material or controlling the porosity of the thermometric powder metal material to replicate the actual powder metal material, and then subjecting thermometric powder metal material to an engine test. For example, the thermal conductivity can be adjusted by infiltrating the thermometric powder metal material with copper.
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2.发明申请公开(公告)号：US20180001387A1
公开(公告)日：2018-01-04
申请号：US15703552
申请日：2017-09-13
申请人： FEDERAL-MOGUL LLC
发明人： Philippe BEAULIEU , Denis B. CHRISTOPHERSON, JR. , Leslie John FARTHING , Todd SCHOENWETTER , Gilles L'ESPERANCE
IPC分类号： B22F9/08 , C22C33/02 , C22C1/02 , B22F3/12 , B22F1/00 , C21D6/00 , B22F3/10 , C22C37/06 , C21D9/00
摘要： A powder metal composition for high wear and temperature applications is made by atomizing a melted iron based alloy including 3.0 to 7.0 wt. % carbon; 10.0 to 25.0 wt. % chromium; 1.0 to 5.0 wt. % tungsten; 3.5 to 7.0 wt. % vanadium; 1.0 to 5.0 wt. % molybdenum; not greater than 0.5 wt. % oxygen; and at least 40.0 wt. % iron. The high carbon content reduces the solubility of oxygen in the melt and thus lowers the oxygen content to a level below which would cause the carbide-forming elements to oxidize during atomization. The powder metal composition includes metal carbides in an amount of at least 15 vol. %. The microhardness of the powder metal composition increases with increasing amounts of carbon and is typically about 800 to 1,500 Hv50.
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公开(公告)号：US20180104745A1
公开(公告)日：2018-04-19
申请号：US15295733
申请日：2016-10-17
CPC分类号： B22F9/082 , B22F1/0003 , B22F1/0048 , B22F2009/0828 , B22F2009/0844 , B22F2998/10 , C21C1/02 , C21C1/025 , C21C1/105 , C21C7/0056 , C21C7/06 , C21C7/0645 , C21C7/072 , C21C2007/0062 , C22B9/05
摘要： An improved method of manufacturing a powder metal material by water, gas, plasma, or rotating disk atomization is provided. The method includes adding at least one additive to a melted metal material before or during the atomization process. The at least one additive forms a protective gas atmosphere surrounding the melted metal material which is at least three times greater than the volume of melt to be treated. The protective atmosphere prevents introduction or re-introduction of contaminants, such as sulfur (S) and oxygen (O2), into the material. The atomized particles produced include at least one of the following advantages: median circularity of at least 0.60, median roundness of at least 0.60, less internal pores, less internal oxides, and an increased sphericity of the microstructural phases and/or constituents.
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4.发明申请公开(公告)号：US20180087135A1
公开(公告)日：2018-03-29
申请号：US15668368
申请日：2017-08-03
申请人： FEDERAL-MOGUL LLC
CPC分类号： C22C27/04 , B22F1/0003 , B22F3/16 , B22F2301/00 , B22F2998/10 , C22C1/1036 , C22C1/1068 , C22C19/07 , C22C29/005 , C22C29/02 , C22C29/08 , C22C29/14 , C22C29/16 , C22C32/0047 , C22C32/0052 , C22C32/0068 , C22C32/0073 , C22C38/18 , F01L3/02 , F16K1/42 , F16K25/005 , B22F3/02 , B22F3/26 , B22F3/10
摘要： A sintered material for use in an internal combustion engine, such as a valve seat insert, is provided. The material includes a pressed base powder metal mixture and a Cu-rich phase infiltrated in pores of the base powder metal mixture. The base powder metal mixture includes at least one of Mo and W, and at least one additive, such as B, N, and/or C. The amount of the Mo and/or W is 50 wt. % to 85 wt. %, based on the total weight of the material. The at least one additive is present in a total amount of 0.2 to 25 wt. %, based on the total weight of the material, and the Cu-rich phase is present in an amount of 15 wt. % to 50 wt. %, based on the total weight of the material. The material also has a thermal conductivity of at least 70 W/mK.
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