WO2019146310A1 - Poudre mélangée de métallurgie des poudres - Google Patents

Poudre mélangée de métallurgie des poudres Download PDF

Info

Publication number
WO2019146310A1
WO2019146310A1 PCT/JP2018/046397 JP2018046397W WO2019146310A1 WO 2019146310 A1 WO2019146310 A1 WO 2019146310A1 JP 2018046397 W JP2018046397 W JP 2018046397W WO 2019146310 A1 WO2019146310 A1 WO 2019146310A1
Authority
WO
WIPO (PCT)
Prior art keywords
powder
mass
metallurgy
magnesium oxide
mixed
Prior art date
Application number
PCT/JP2018/046397
Other languages
English (en)
Japanese (ja)
Inventor
眞規 吉田
洋平 高松
Original Assignee
株式会社神戸製鋼所
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority claimed from JP2018203514A external-priority patent/JP6929259B2/ja
Application filed by 株式会社神戸製鋼所 filed Critical 株式会社神戸製鋼所
Priority to MX2020007821A priority Critical patent/MX2020007821A/es
Priority to EP18902349.2A priority patent/EP3744441A4/fr
Priority to CN201880073768.8A priority patent/CN111344090B/zh
Priority to BR112020014533A priority patent/BR112020014533B8/pt
Priority to CA3089506A priority patent/CA3089506A1/fr
Priority to KR1020207023830A priority patent/KR102348200B1/ko
Priority to US16/963,652 priority patent/US20210060640A1/en
Publication of WO2019146310A1 publication Critical patent/WO2019146310A1/fr

Links

Classifications

    • B22F1/0003—
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
    • B22F1/00—Metallic powder; Treatment of metallic powder, e.g. to facilitate working or to improve properties
    • B22F1/12—Metallic powder containing non-metallic particles
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
    • B22F5/00—Manufacture of workpieces or articles from metallic powder characterised by the special shape of the product
    • B22F5/10—Manufacture of workpieces or articles from metallic powder characterised by the special shape of the product of articles with cavities or holes, not otherwise provided for in the preceding subgroups
    • B22F5/106—Tube or ring forms
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C33/00—Making ferrous alloys
    • C22C33/02—Making ferrous alloys by powder metallurgy
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C33/00—Making ferrous alloys
    • C22C33/02—Making ferrous alloys by powder metallurgy
    • C22C33/0257—Making ferrous alloys by powder metallurgy characterised by the range of the alloying elements
    • C22C33/0264—Making ferrous alloys by powder metallurgy characterised by the range of the alloying elements the maximum content of each alloying element not exceeding 5%
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
    • B22F2301/00—Metallic composition of the powder or its coating
    • B22F2301/10—Copper
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
    • B22F2301/00—Metallic composition of the powder or its coating
    • B22F2301/35—Iron
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
    • B22F2302/00—Metal Compound, non-Metallic compound or non-metal composition of the powder or its coating
    • B22F2302/25—Oxide
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
    • B22F2302/00—Metal Compound, non-Metallic compound or non-metal composition of the powder or its coating
    • B22F2302/45—Others, including non-metals
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
    • B22F2303/00—Functional details of metal or compound in the powder or product
    • B22F2303/01—Main component
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
    • B22F2304/00—Physical aspects of the powder
    • B22F2304/10—Micron size particles, i.e. above 1 micrometer up to 500 micrometer

Definitions

  • the present invention relates to a mixed powder for powder metallurgy.
  • a sintered body having a complicated shape such as a net shape by sintering iron-based powder.
  • a sintered body is used, for example, as a structural part such as an automaker part. While the demand for improvement of the dimensional accuracy of parts is increasing, it is necessary to further improve the dimensional accuracy by further cutting the sintered body.
  • mixed powder for powder metallurgy in which an iron-based powder is mixed with an additive that improves machinability and prolongs the life of the cutting tool.
  • powders such as manganese sulfide (MnS) and sulfur (S) are used as an additive (a machinability improving material) for improving the machinability.
  • MnS manganese sulfide
  • S sulfur
  • machinability improving materials function as a lubricant that lowers the resistance at the time of cutting, or have an action of becoming a starting point of chip division, and extend the life of the cutting tool.
  • the content of the machinability improving material in the powder mixture for powder metallurgy is larger, the machinability of the formed sintered body is improved, and the cutting tool life is extended.
  • the content of the machinability improving material is increased, mechanical properties such as radial crushing strength of the sintered material deteriorate, and dimensional change rates before and after sintering change, so a new molding die is required.
  • the content of the machinability improving material in the mixed powder for powder metallurgy is about 0.3 mass% to about 0.5 mass%.
  • the machinability improving material described above is relatively less effective in high speed cutting.
  • the sulfur evaporates during sintering to contaminate the appearance of the sintered body or contaminate the inside of the sintering furnace to damage the sintering furnace.
  • Japanese Patent Laid-Open No. 9-279204 proposes an iron-based mixed powder for powder metallurgy containing 0.02 to 0.3% by weight of a powder of a CaO-Al 2 O 3 -SiO 2 -based composite oxide.
  • a complex oxide mainly composed of Ca reduces the deterioration of mechanical properties of the sintered body, prevents the contamination of the sintered body and the damage of the sintering furnace, and the cutting tool for high speed cutting It is stated that it is possible to reduce the wear of the
  • this invention makes it a subject to provide the mixed powder for powder metallurgy which can form the sintered material which is excellent in machinability.
  • the mixed powder for powder metallurgy according to one aspect of the present invention made to solve the above problems is mainly composed of iron-based powder, and powder of any one or more of sulfides of CaS, MnS and MoS 2 ; And the powder of magnesium oxide is from 005% by mass to 0.025% by mass, and the average particle diameter D50 of the magnesium oxide is from 0.5 ⁇ m to 5.0 ⁇ m.
  • the sulfide functions as a lubricant and forms an oxide that causes magnesium oxide particles having a relatively small particle size to adhere to the surface of the cutting tool, and the cutting tool is a sintered body It is thought that it suppresses that it is scraped by the hard oxide etc. inside. For this reason, the sintered material formed by sintering the mixed powder for powder metallurgy is excellent in machinability and can relatively prolong the life of the cutting tool.
  • the total content of the sulfides is preferably 0.04% by mass or more and 0.20% by mass or less. According to this configuration, it is possible to suppress a decrease in mechanical properties and the like of a sintered material formed by sintering the mixed powder for powder metallurgy.
  • iron-based powder means pure iron powder, iron alloy powder or mixed powder thereof. Moreover, “mainly” means containing 90 mass% or more.
  • the “average particle diameter D50” means a particle diameter at which the integrated volume is 50% in the particle diameter distribution measured by the laser diffraction scattering method.
  • the mixed powder for powder metallurgy of the present invention can form a sintered material excellent in machinability.
  • the mixed powder for powder metallurgy is mainly composed of iron-based powder, and contains sulfide powder and magnesium oxide (MgO) powder.
  • the mixed powder for powder metallurgy may further contain, for example, copper powder, graphite powder, powder lubricant and the like.
  • Iron-based powder The iron-based powder that is the main component of the mixed powder for powder metallurgy is not particularly limited, and for example, reduced iron-based powder, atomized iron-based powder, electrolytic iron-based powder, and the like can be used.
  • the iron-based powder is not limited to pure iron powder, for example, steel powder obtained by pre-alloying alloying elements (pre-alloy steel powder), steel powder obtained by partially alloying alloy elements (partially alloyed steel powder), etc. These may be used, or a mixture of two or more of these may be used.
  • the alloying elements can include, for example, copper, nickel, chromium, molybdenum, sulfur, and other known elements that improve the characteristics of the sintered body.
  • the average particle diameter D50 of the iron-based powder is not particularly limited as long as it can be used as a main raw material powder for powder metallurgy, and can be, for example, 40 ⁇ m to 120 ⁇ m.
  • ⁇ Sulphide powder> In a sintered body obtained by sintering the mixed powder for powder metallurgy, the sulfide remains as particles as it is. Since these sulfides are softer than the iron base that is the main body of the sintered body, they improve the machinability of the sintered body and also have lubricity to reduce the friction at the time of cutting. Increase the life span.
  • the sulfide in the sintered body is desulfurized by heat generation at the time of cutting to form an oxide.
  • This oxide is considered to form a film that adheres to the surface of the cutting tool to protect the cutting tool, and also serves as a binder that causes very hard magnesium oxide to adhere to the surface of the cutting tool.
  • any one or more of CaS, MnS and MoS 2 can be used as the sulfide capable of efficiently improving the machinability and adhering magnesium oxide.
  • the total content of sulfides As a lower limit of the total content of sulfides, 0.04% by mass is preferable, and 0.06% by mass is more preferable. On the other hand, as an upper limit of the total content of sulfides, 0.20 mass% is preferable, and 0.18 mass% is more preferable. If the total content of sulfides does not reach the above lower limit, the machinability may not be sufficiently improved. On the contrary, when the total content of sulfides exceeds the above-mentioned upper limit, there is a possibility that the mechanical characteristics of the sintered compact obtained by sintering the mixed powder for powder metallurgy may deteriorate.
  • average particle diameter D50 of sulfides such as CaS and MnS
  • 1.0 micrometer is preferred and 1.5 micrometers is more preferred.
  • an upper limit of average particle diameter D50 of sulfide 10 micrometers is preferred and 8 micrometers is more preferred.
  • the average particle diameter D50 of these sulfides is less than the above lower limit, there is a possibility that it may be difficult to uniformly disperse in the mixed powder for powder metallurgy, or the mixed powder for powder metallurgy may become unnecessarily expensive. is there.
  • Magnesium oxide is a chemically stable hard material.
  • the powder of magnesium oxide is also present as fine particles in a sintered body obtained by sintering the mixed powder for powder metallurgy.
  • the fine particles of magnesium oxide adhere to the surface of the cutting tool by the oxide generated due to the sulfide, thereby protecting the cutting tool and improving the machinability of the sintered body.
  • the lower limit of the content of magnesium oxide is 0.005% by mass, preferably 0.010% by mass.
  • the upper limit of the content of magnesium oxide is 0.025% by mass, preferably 0.020% by mass. If the content of magnesium oxide is less than the above lower limit, the wear of the cutting tool may not be reduced. On the contrary, when the content of magnesium oxide exceeds the above upper limit, there is a possibility that the dimensional change rate at the time of sintering becomes large, and the mechanical properties such as radial crushing strength of the sintered body may be insufficient.
  • the lower limit of the average particle diameter D50 of magnesium oxide is 0.5 ⁇ m, preferably 0.7 ⁇ m.
  • the upper limit of the average particle diameter D50 of magnesium oxide is 5.0 ⁇ m, preferably 3.0 ⁇ m.
  • the average particle diameter D50 of magnesium oxide is less than the above lower limit, aggregation of MgO is formed. Moreover, it may not be easy to disperse
  • the dimensional change rate may increase, and mechanical properties such as radial crushing strength may be insufficient.
  • the average particle diameter D50 of magnesium oxide exceeds the above-mentioned upper limit, there is a possibility that sintering may be inhibited and strength may be reduced, the cutting tool may be chipped to accelerate wear, or magnesium oxide particles may adhere to the cutting tool The inability to do so may shorten the life of the cutting tool or may lower the processing accuracy. That is, if magnesium oxide has a sufficiently small particle size, magnesium oxide adheres to the surface of the cutting tool without increasing damage to the cutting tool so as to accelerate wear, and the life of the cutting tool can be extended.
  • the copper powder functions as a binder for binding iron-based powder particles to one another, and improves the strength of a sintered body obtained by sintering the mixed powder for powder metallurgy.
  • copper powder what is used for powder metallurgy can be used widely, for example, electrolytic copper powder, atomized copper powder, etc. can be used.
  • the copper powder may be simply mixed with the iron-based powder, but may be attached to the surface of the iron-based powder using a binder, or diffused and attached to the surface of the iron-based powder by heat treatment by mixing with the iron-based powder. May be
  • the lower limit of the copper powder content is preferably 0.8% by mass, and more preferably 1.0% by mass, although it depends on the strength and hardness required for the sintered body.
  • an upper limit of content of a copper powder 5.0 mass% is preferable, 3.0 mass% is more preferable, and 2.0 mass% is especially preferable.
  • content of the copper powder is less than the above lower limit, the strength improvement effect of the sintered body may be insufficient.
  • content of copper powder exceeds the above-mentioned upper limit, there is a possibility that diffusion of carbon may be inhibited and intensity of a sintered compact may become insufficient.
  • average particle diameter D50 of copper powder As a minimum of average particle diameter D50 of copper powder, 5 micrometers is preferred and 10 micrometers is more preferred. On the other hand, as an upper limit of average particle diameter D50 of copper powder, 50 micrometers is preferred and 40 micrometers is more preferred. If the average particle size D50 of the copper powder does not satisfy the above lower limit, it may be difficult to uniformly disperse in the mixed powder for powder metallurgy, or the mixed powder for powder metallurgy may be unnecessarily expensive. . Conversely, when the average particle diameter D50 of the copper powder exceeds the above upper limit, the strength of the sintered body obtained by sintering the mixed powder for powder metallurgy may not be sufficiently improved.
  • Graphite powder The graphite powder reacts with iron at the time of sintering the mixed powder for powder metallurgy to form a hard pearlite phase, thereby improving the strength of the obtained sintered body.
  • graphite powder natural graphite powder, artificial graphite powder, etc. can be used, for example.
  • the graphite powder may be simply mixed with the iron-based powder, but may be attached to the surface of the iron-based powder using a binder.
  • average particle diameter D50 of graphite powder As a minimum of average particle diameter D50 of graphite powder, 1 micrometer is preferred and 3 micrometers is more preferred. On the other hand, as an upper limit of average particle diameter D50 of graphite powder, 30 micrometers is preferred and 20 micrometers is more preferred. If the average particle diameter D50 of the graphite powder is less than the above lower limit, it may be difficult to uniformly disperse the powder powder for the powder metallurgy, or the powder powder for the powder metallurgy may be unnecessarily expensive. . Conversely, when the average particle diameter D50 of the graphite powder exceeds the above upper limit, segregation may occur in the sintered body obtained by sintering the mixed powder for powder metallurgy and the strength may not be sufficiently improved.
  • the powder lubricant reduces friction between particles when compacting the mixed powder for powder metallurgy, improves moldability, and prolongs mold life.
  • the powder lubricant evaporates and thermally decomposes and disappears during sintering.
  • powders of metal soaps such as zinc stearate and non-metal soaps such as ethylene bisamide are used.
  • a powder lubricant As a minimum of content of a powder lubricant, 0.2 mass% is preferred, and 0.5 mass% is more preferred. On the other hand, as an upper limit of content of a powder lubricant, 1.5 mass% is preferred, and 1.0 mass% is more preferred. If the content of the powder lubricant is less than the above lower limit, the powder compactability of the powder mixture for powder metallurgy may be insufficient. On the other hand, when the content of the powder lubricant exceeds the above upper limit, the density obtained by sintering the mixed powder for powder metallurgy after sintering is low, and the strength of the sintered body may be insufficient.
  • the lower limit of the average particle diameter D50 of the powder lubricant is preferably 3 ⁇ m, more preferably 5 ⁇ m.
  • an upper limit of average particle diameter D50 of a powder lubricant 50 micrometers is preferred and 30 micrometers is more preferred. If the average particle diameter D50 of the powder lubricant is less than the above lower limit, it may be difficult to uniformly disperse in the mixed powder for powder metallurgy, or the mixed powder for powder metallurgy may be unnecessarily expensive. is there. Conversely, when the average particle diameter D50 of the powder lubricant exceeds the above upper limit, the strength of the sintered body obtained by sintering the mixed powder for powder metallurgy may not be sufficiently improved.
  • the sulfide functions as a lubricant and forms an oxide that causes magnesium oxide particles having a small particle size to adhere to the surface of the cutting tool, and the cutting tool is hard in the sintered body. It is thought that it suppresses that it is shaved off with an oxide etc. For this reason, the sintered material formed by sintering the mixed powder for powder metallurgy is excellent in machinability and can relatively prolong the life of the cutting tool.
  • iron-based powder atomized pure iron powder “Atomel 300M” having an average particle diameter D50 of 70 ⁇ m of Kobe Steel, Ltd. was used.
  • copper powder a water atomized copper powder “CuAtW-250” having a 250 ⁇ m sieve gap of Fukuda Metal Foil & Powder Industry Co., Ltd. was used.
  • graphite powder “CPB” having an average particle diameter D50 of about 23 ⁇ m by Nippon Graphite Industries, Ltd. was used.
  • CaS calcium sulfide
  • MnS manganese sulfide
  • MnS manganese sulfide
  • magnesium oxide one having an average particle diameter D50 of 0.7 ⁇ m, one having an average particle diameter D50 of 2.5 ⁇ m, or one having an average particle diameter D50 of 3.2 ⁇ m was used.
  • Each of No. 1 to No. 15 was compacted with a mold to form a ring-shaped compact having an outer diameter of 64 mm, an inner diameter of 24 mm, and a height of 20 mm.
  • the conditions were set so that the density of the compact was 7.00 g / cm 3 .
  • the obtained compact was sintered at a temperature of 1120 ° C. for 60 minutes in a nitrogen gas atmosphere containing 10 vol% of hydrogen gas to obtain a sintered body.
  • the dimensional change ratio (molding standard and mold standard) at sintering of each trial product, radial crushing strength, and Rockwell hardness (B scale) were measured.
  • a test was performed in which 10 sintered bodies of each trial product were stacked and the side surface was turned.
  • a chip "SNMN 120408" using Mitsubishi Materials' cermet "NX2525” was used as a cutting tool.
  • peripheral speed 200 m / min, infeed amount 0.15 mm / pass, feed amount 0.08 mm / rev, dry cutting was performed, and 5287 m was cut.
  • the surface roughness Ra (arithmetic mean roughness) and Rz (maximum height) of the cutting surface of the sintered body after the turning test were measured.
  • the sintered body obtained by sintering 1 to 3, 5, 7, 8, 11, 13 has sufficient formability and mechanical strength, and the wear of the cutting tool is small.
  • the sintered body prepared from 1, 5, 8, 13, 14, 15 was subjected to a test for drilling with a drill.
  • the coating carbide drill "AD-4D" of diameter 3.8mm of OSG company was used.
  • the peripheral speed of the drill is 2 m / min (4358 rpm)
  • the feed rate is 450 mm / min (0.103 mm / rev)
  • the water-soluble oil agent "Yushiroken EC50" of Yushiro Chemical Industry Co., Ltd. is sintered as a cutting oil. I cut it while putting it on my body. In order to increase the cutting distance, 180 non-through holes with a depth of 10 mm were formed.
  • flank wear width Vb flank wear width
  • Powdered powder metallurgical mixed powder No. 1 containing sulfide and magnesium oxide The sintered body obtained by sintering 1, 5, 8 and 13 is powder No. 1 for powder metallurgy which does not contain both sulfide and magnesium oxide.
  • the above-mentioned mixed powder No. 1 for powder metallurgy is used as iron-based powder.
  • the same one as 1 to 15 was used.
  • the above-mentioned mixed powder No. 1 for powder metallurgy is used as a machinability improving material.
  • the same manganese sulfide as 1 to 15 and sulfur having an average particle size D50 of 46.1 ⁇ m (“S” in the table) and an iron sulfide having an average particle size D50 of 13.5 ⁇ m (“in the table FeS ”) was used.
  • the above-mentioned mixed powder No. 1 for powder metallurgy. No. 16 to 32 are the above-mentioned mixed powder No. 1 for powder metallurgy, respectively.
  • a ring-shaped compact is prepared by compacting with a mold in the same manner as in 1 to 15 and the resulting compact is fired at a temperature of 1130 ° C. for 60 minutes under a nitrogen gas atmosphere containing 10 volume% hydrogen gas. The sintered compact was obtained.
  • the dimensional change ratio (molding standard and mold standard) at sintering of each trial product, radial crushing strength, and Rockwell hardness (B scale) were measured.
  • a test was performed in which 10 pieces of sintered bodies of each trial product were stacked and the side surface was turned.
  • a chip "2NU-CNGA120408LF” using cubic boron nitride "BN7500” manufactured by Sumitomo Electric Co., Ltd. was used.
  • peripheral speed 200 m / min, infeed amount 0.1 mm / pass, feed amount 0.1 mm / rev, dry cutting, and 2735 m was performed.
  • the sintered bodies obtained by sintering 16 to 19 and 22 to 25 have sufficient formability and mechanical strength, and the wear of the cutting tool is small.
  • the above-mentioned mixed powder No. 1 for powder metallurgy is used as iron-based powder, copper powder, graphite powder, magnesium oxide and powder lubricants. The same one as 1 to 15 was used. Moreover, as a machinability improving material, the above-mentioned mixed powder No. 1 for powder metallurgy is used. The same manganese sulfide as 1 to 15 and molybdenum disulfide ("MoS 2 " in the table) having an average particle diameter D50 of 5.0 ⁇ m were used.
  • MoS 2 molybdenum disulfide
  • the above-mentioned mixed powder No. 1 for powder metallurgy. No. 33 to 39 are respectively the above-mentioned mixed powder No. 1 for powder metallurgy.
  • a ring-shaped compact is prepared by compacting with a die in the same manner as in 16 to 32. It sintered on the conditions similar to 16-32, and obtained the sintered compact.
  • the dimensional change ratio (molding standard and mold standard) at sintering of each trial product, radial crushing strength, and Rockwell hardness (B scale) were measured.
  • a test was performed in which 10 pieces of sintered bodies of each trial product were stacked and the side surface was turned.
  • a chip "2NU-CNGA120408LF” using cubic boron nitride "BN7500” manufactured by Sumitomo Electric Co., Ltd. was used.
  • peripheral speed 200 m / min, infeed amount 0.1 mm / pass, feed amount 0.1 mm / rev, dry cutting, and 2735 m was performed.
  • the mixed powder for powder metallurgy according to the present invention is suitably used to manufacture high-precision parts which need to be cut after sintering.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Manufacturing & Machinery (AREA)
  • Powder Metallurgy (AREA)

Abstract

Selon un mode de réalisation, la présente invention concerne une poudre mélangée de métallurgie des poudres constituée principalement d'une poudre à base de fer et contenant une poudre d'un ou de plusieurs sulfures sélectionnés parmi CaS, MnS et MoS2 et de 0,005 à 0,025 % en masse de poudre d'oxyde de magnésium, l'oxyde de magnésium ayant un diamètre moyen de particule D50 de 0,5 à 5,0 µm.
PCT/JP2018/046397 2018-01-25 2018-12-17 Poudre mélangée de métallurgie des poudres WO2019146310A1 (fr)

Priority Applications (7)

Application Number Priority Date Filing Date Title
MX2020007821A MX2020007821A (es) 2018-01-25 2018-12-17 Polvo mixto para pulvimetalurgia.
EP18902349.2A EP3744441A4 (fr) 2018-01-25 2018-12-17 Poudre mélangée de métallurgie des poudres
CN201880073768.8A CN111344090B (zh) 2018-01-25 2018-12-17 粉末冶金用混合粉
BR112020014533A BR112020014533B8 (pt) 2018-01-25 2018-12-17 Pó misturado para a metalurgia do pó
CA3089506A CA3089506A1 (fr) 2018-01-25 2018-12-17 Poudre melangee de metallurgie des poudres
KR1020207023830A KR102348200B1 (ko) 2018-01-25 2018-12-17 분말 야금용 혼합분
US16/963,652 US20210060640A1 (en) 2018-01-25 2018-12-17 Mixed powder for powder metallurgy

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
JP2018010490 2018-01-25
JP2018-010490 2018-01-25
JP2018-203514 2018-10-30
JP2018203514A JP6929259B2 (ja) 2018-01-25 2018-10-30 粉末冶金用混合粉

Publications (1)

Publication Number Publication Date
WO2019146310A1 true WO2019146310A1 (fr) 2019-08-01

Family

ID=67395380

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/JP2018/046397 WO2019146310A1 (fr) 2018-01-25 2018-12-17 Poudre mélangée de métallurgie des poudres

Country Status (3)

Country Link
KR (1) KR102348200B1 (fr)
MX (1) MX2020007821A (fr)
WO (1) WO2019146310A1 (fr)

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH01255603A (ja) * 1988-04-05 1989-10-12 Kawasaki Steel Corp 焼結後の被削性と機械的性質に優れる、粉末冶金用鉄基混合粉
JPH06145701A (ja) * 1992-11-04 1994-05-27 Kawasaki Steel Corp 粉末冶金用鉄基粉末混合物及びその製造方法
JPH09279204A (ja) 1996-04-17 1997-10-28 Kobe Steel Ltd 粉末冶金用鉄系混合粉末およびこれを用いた焼結体の製法
JP2008127640A (ja) * 2006-11-22 2008-06-05 Jfe Steel Kk 粉末冶金用鉄基粉末
JP2009120905A (ja) * 2007-11-14 2009-06-04 Kobe Steel Ltd 被削性に優れた機械構造用鋼
JP2012144801A (ja) * 2010-02-18 2012-08-02 Jfe Steel Corp 粉末冶金用混合粉およびその製造方法ならびに切削性に優れた鉄基粉末製焼結体およびその製造方法
CN103357864A (zh) * 2013-06-21 2013-10-23 马鞍山市恒毅机械制造有限公司 一种适用于高速镗削加工的粉末冶金铁基材料及其制备方法
JP2017179388A (ja) * 2016-03-28 2017-10-05 大同特殊鋼株式会社 焼結用粉末および焼結体

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2015008406A1 (fr) * 2013-07-18 2015-01-22 Ｊｆｅスチール株式会社 Poudre mélangée pour métallurgie des poudres, procédé pour la production de celle-ci et procédé pour la production de comprimé fritté de formulation de poudre à base de fer
JP6480264B2 (ja) * 2015-05-27 2019-03-06 株式会社神戸製鋼所 鉄基粉末冶金用混合粉及び焼結体
JP6380501B2 (ja) * 2015-12-01 2018-08-29 Ｊｆｅスチール株式会社 粉末冶金用混合粉、粉末冶金用混合粉の製造方法、および焼結体

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH01255603A (ja) * 1988-04-05 1989-10-12 Kawasaki Steel Corp 焼結後の被削性と機械的性質に優れる、粉末冶金用鉄基混合粉
JPH06145701A (ja) * 1992-11-04 1994-05-27 Kawasaki Steel Corp 粉末冶金用鉄基粉末混合物及びその製造方法
JPH09279204A (ja) 1996-04-17 1997-10-28 Kobe Steel Ltd 粉末冶金用鉄系混合粉末およびこれを用いた焼結体の製法
JP2008127640A (ja) * 2006-11-22 2008-06-05 Jfe Steel Kk 粉末冶金用鉄基粉末
JP2009120905A (ja) * 2007-11-14 2009-06-04 Kobe Steel Ltd 被削性に優れた機械構造用鋼
JP2012144801A (ja) * 2010-02-18 2012-08-02 Jfe Steel Corp 粉末冶金用混合粉およびその製造方法ならびに切削性に優れた鉄基粉末製焼結体およびその製造方法
CN103357864A (zh) * 2013-06-21 2013-10-23 马鞍山市恒毅机械制造有限公司 一种适用于高速镗削加工的粉末冶金铁基材料及其制备方法
JP2017179388A (ja) * 2016-03-28 2017-10-05 大同特殊鋼株式会社 焼結用粉末および焼結体

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See also references of EP3744441A4

Also Published As

Publication number Publication date
KR102348200B1 (ko) 2022-01-06
MX2020007821A (es) 2020-09-25
KR20200108064A (ko) 2020-09-16

Similar Documents

Publication Publication Date Title
EP3305440B1 (fr) Mélange de poudres pour métallurgie des poudres à base de fer, corps fritté fabriqué à l'aide de celui-ci
JP2018508660A (ja) 簡易な機械加工のための粉末金属組成物
JP5504963B2 (ja) 粉末冶金用混合粉および切削性に優れた金属粉末製焼結体
JP5504971B2 (ja) 粉末冶金用混合粉および切削性に優れた金属粉末製焼結体
JP2015172238A (ja) 粉末冶金用混合粉およびその製造方法ならびに鉄基粉末製焼結体
EP3321000B1 (fr) Mélange de poudres pour métallurgie des poudres à base de fer, et procédé de fabrication de ce mélange de poudres
EP3305439B1 (fr) Mélange de poudres pour métallurgie des poudres à base de fer, procédé de fabrication de ce mélange de poudres, et corps fritté fabriqué à l'aide de mélange de poudres
JP2009019257A (ja) 粉末冶金用混合粉末および鉄粉焼結体
WO2019146310A1 (fr) Poudre mélangée de métallurgie des poudres
TWI694157B (zh) 粉末冶金用混合粉
JP2015157973A (ja) 粉末冶金用混合粉およびその製造方法ならびに鉄基粉末製焼結体
JP5504863B2 (ja) 粉末冶金用混合粉および切削性に優れた金属粉末製焼結体
JP2015157974A (ja) 粉末冶金用混合粉およびその製造方法ならびに鉄基粉末製焼結体
JP5310074B2 (ja) 自動車の高強度焼結部品用の鉄基粉末混合物
JP2024016289A (ja) 鉄基焼結摺動部材及びその製造方法
TW201802261A (zh) 用於簡易機械加工之粉末金屬組合物

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 18902349

Country of ref document: EP

Kind code of ref document: A1

ENP Entry into the national phase

Ref document number: 3089506

Country of ref document: CA

NENP Non-entry into the national phase

Ref country code: DE

ENP Entry into the national phase

Ref document number: 20207023830

Country of ref document: KR

Kind code of ref document: A

ENP Entry into the national phase

Ref document number: 2018902349

Country of ref document: EP

Effective date: 20200825

REG Reference to national code

Ref country code: BR

Ref legal event code: B01A

Ref document number: 112020014533

Country of ref document: BR

ENP Entry into the national phase

Ref document number: 112020014533

Country of ref document: BR

Kind code of ref document: A2

Effective date: 20200716