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公开(公告)号：US20200208244A1
公开(公告)日：2020-07-02
申请号：US16631284
申请日：2018-07-19
摘要： A sintered material made of an iron-based alloy is provided, wherein a content of Ni is more than 0.2 mass % and 10 mass % or less in an entire iron-based alloy; a content of C is more than 0 mass % and 2.0 mass % or less in the entire iron-based alloy; at least one element selected from Mo, Mn, Cr B and Si is more than 0 mass % and 5.0 mass % or less in total in the entire iron-based alloy; and a rest of the iron-based alloy is Fe and incidental impurities. A content of Ni in a local region of the iron-based alloy is more than 0.2 mass % and less than 21 mass %. A relative density is 97% or more.
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公开(公告)号：US20220152701A1
公开(公告)日：2022-05-19
申请号：US17594124
申请日：2020-04-13
摘要： A method of making a sintered body includes a step of preparing raw material powder containing powder of inorganic material, a step of producing a powder compact having a high-density portion with a relative density of 93% or more and a low-density portion with a relative density of less than 93% by compressing the raw material powder injected into a mold, a step of producing a machined compacted part by machining at least the high-density portion of the powder compact, and a step of sintering the machined compacted part to make a sintered body, wherein a perimeter shape of a cavity constituted by the mold in a cross-section perpendicular to an axial direction of the mold is such than a maximum stress applied to an inner perimeter surface of the mold during a compacting process using the mold is less than or equal to 2.6 times an imaginary maximum stress that is applied to an inner perimeter surface of an imaginary mold during a compacting process using the imaginary mold, the imaginary mold having an imaginary cavity that has a same area as the cavity and that has a circular perimeter shape.
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公开(公告)号：US20210162499A1
公开(公告)日：2021-06-03
申请号：US16615093
申请日：2018-05-08
摘要： A method for manufacturing a sintered member includes a step of preparing a raw material powder containing an iron-based powder; a step of forming a green compact having a relative density of 97% or more and having a solid cylindrical shape or hollow cylindrical shape by compacting the raw material powder; and a step of sintering the green compact. The raw material powder contains at least one of a mixed powder containing pure iron powder and Ni powder and an iron alloy powder containing Ni as an additive element. The total amount of the Ni powder and Ni serving as the additive element in the raw material powder is 1 mass % or more.
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公开(公告)号：US20230054503A1
公开(公告)日：2023-02-23
申请号：US17792727
申请日：2020-10-29
IPC分类号： B23B27/16
摘要： A tool main body to which an insert is attachable, in which the tool main body is made of sintered metal material, and the sintered metal material includes a parent phase made of a metal and a plurality of pores present in the parent phase.
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公开(公告)号：US20210162498A1
公开(公告)日：2021-06-03
申请号：US17047206
申请日：2019-01-30
IPC分类号： B22F3/12
摘要： A sintered material includes a composition composed of iron-based alloy, and a texture containing 200 or more and 1350 or less of compound particles having a size of 0.3 μm or more per unit area of 100 μm×100 μm in a cross section, and a relative density is 93% or more.
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公开(公告)号：US20220299097A1
公开(公告)日：2022-09-22
申请号：US17638200
申请日：2019-08-30
摘要： A sintered gear of annular shape which has a composition including a metal, has a plurality of pores in a surface thereof, and has a relative density of 93% or more and 99.5% or less.
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公开(公告)号：US20220281000A1
公开(公告)日：2022-09-08
申请号：US17637809
申请日：2019-08-30
摘要： A sintered material containing a parent phase composed of a metal and a plurality of pores present in the parent phase, wherein the pores in a cross section have an average cross-sectional area of 500 μm2 or less, and the sintered material has a relative density in the range of 93% to 99.5%.
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公开(公告)号：US20220105564A1
公开(公告)日：2022-04-07
申请号：US17424904
申请日：2020-01-29
摘要： A sintered material with a composition composed of an iron-based alloy and a structure in which the number of compound particles 0.3 μm or more in size is less than 200 per 100 μm×100 μm unit area in a cross section, wherein the sintered material has a relative density of 93% or more.
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