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公开(公告)号：JPS5925058A
公开(公告)日：1984-02-08
申请号：JP13585182
申请日：1982-08-04
Applicant: Toyota Motor Corp
Inventor： KOYAMA HARATSUGU , MIYAZAKI SHIYOUJI , MIYAKE JIYOUJI
CPC classification number: F02F1/18
Abstract: PURPOSE:To obtain heat-insulating capacity as well as capacities of anti-abrasion and anti-seizure by providing a ceramic layer on the inner circumferential face of a cylinder main body constructed of metallic material by deposition. CONSTITUTION:For a cylinder main body 1, cast iron, steel, or aluminium is available. For a bonding material layer 2, a material that promotes the bondage between the cylinder main body and a heat-insulating ceramic layer with low thermal conductivity, such as Ni-Al alloy, Ni-Cr alloy, Ni-Cr-Al alloy, Ni-Cr- Mo alloy, or a simple metal material such as Mo can be adopted at thickness of 20-100mu. For a heat-insulating ceramic layer 3, a ZrO2 material of high thermal insulation, especially, MgO-stabilized ZrO2, CaO-stabilized ZrO2, or Y2O3-stabilized ZrO2 can be used at thickness of 100-1,500mu. For an anti-abrasion ceramic layer 4, a material with high capacity of anti-abrasion and anti-seizure such as Al2O3.TiO2 or Cr2O3 is available at thickness of 50-200mu.
Abstract translation: 目的：通过在金属材料构成的圆筒主体的内周面上设置陶瓷层，通过沉积来获得绝热能力以及抗磨损和抗咬合能力。 规定：对于汽缸主体1，可以使用铸铁，钢或铝。 对于接合材料层2，促进气缸主体和导热系数低的绝热陶瓷层如Ni-Al合金，Ni-Cr合金，Ni-Cr-Al合金，Ni -Cr-Mo合金或诸如Mo的简单金属材料可以采用20-100mu的厚度。 对于绝热陶瓷层3，可以使用具有高绝热性的ZrO 2材料，特别是MgO稳定的ZrO 2，CaO稳定的ZrO 2或Y 2 O 3稳定的ZrO 2，厚度为100-1,500μm。 对于耐磨陶瓷层4，可获得具有高耐磨性和抗咬合能力的材料，例如Al 2 O 3·TiO 2或Cr 2 O 3，厚度为50-200mu。
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公开(公告)号：JPH0762518A
公开(公告)日：1995-03-07
申请号：JP20952793
申请日：1993-08-24
Applicant: TOYOTA MOTOR CORP
Inventor： KOYAMA HARATSUGU , HARADA KOJI
Abstract: PURPOSE:To provide the thermal spraying method for an inside surface which eliminates the intrusion of oxide layers of thermally spraying particles and by which a defectless thermally sprayed layer is obtainable. CONSTITUTION:A thermal spraying head 1 is moved in a direction where the thermal spraying angle with the inside surface 2 of a cylinder or pipe, etc., steepens and the thermally sprayed layer is formed on the inside surface by one time of thermal spraying at the time of thermal spraying metal to the inside surface. Bounced back components 4 of the thermally spraying particles 3 are concentrated as an abnormal layer onto the already formed film 5 and thereafter, this abnormal layer is removed, by which only the defectless layer free from the inclusion of the oxides is obtd. as the film to be actually used. A masking member for preventing splashing of thermal spraying flames to parts exclusive of the part requiring thermal spraying is disposed at the time of starting the thermal spraying, by which the splashing of the thermally spraying particles to points exclusive of the inside surface of the cylinder bore is prevented.
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公开(公告)号：JPH06151126A
公开(公告)日：1994-05-31
申请号：JP29266992
申请日：1992-10-30
Applicant: TOYOTA MOTOR CORP
Inventor： KOYAMA HARATSUGU , TAKAYANAGI NOBORU
Abstract: PURPOSE:To obtain a precise magnetic scale having high signal strength, without the necessity of finishing processing. CONSTITUTION:A laser-beam absorbing coating agent 2 for absorbing a laser- beam 17 is applied on the surfaces of a magnetizable metallic member 1, and the periphery of the metallic member 1 on which the laser-beam absorbing coating agent 2 has been applied is covered with an overlay layer 13b which transmits the laser beam 17. And by emitting the laser beam 17 on the surface of the metallic member 1 through the overlay layer 13b, the surface of the metallic member 1 is magnetized by shock waves produced by the rapid expansion of the laser beam absorbing coating agent 2 generated by the irradiation with the laser beam 17.
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公开(公告)号：JPH0550273A
公开(公告)日：1993-03-02
申请号：JP22515191
申请日：1991-08-09
Applicant: TOYOTA MOTOR CORP
Inventor： KOYAMA HARATSUGU , KAWASAKI MINORU , KATO SHINJI
IPC: B23K26/34 , B23K103/18
Abstract: PURPOSE:To furnish the laser beam cladding method advantageous in reducing defects such as an undeposited part and a vacancy in a copper-based cladding layer clad on aluminum-based base metal. CONSTITUTION:When powder 2(Cu-Ni-Fe base) for cladding mounted on the surface of the aluminum-based base metal 1(JIS AC 2B) containing silicon is irradiated with a laser beam and the powder is molten and solidified to form the cladding layer, the pushed-out surface area L where an initial molten part 2a of the powder 2 for cladding molten at the time of starting cladding is pushed out to the base metal surface is subjected to initial irradiation in advance with the laser beam (laser beam output density: 2000W/mm ) and after the initial irradiation, the powder is molten and solidified to form the cladding layer.
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公开(公告)号：JPH03229884A
公开(公告)日：1991-10-11
申请号：JP2552190
申请日：1990-02-05
Applicant: TOYOTA MOTOR CORP
Inventor： KOYAMA HARATSUGU , NAKAGAWA MASAHIRO , YOSHIDA MAKOTO , MORIKAWA TAKASHI , SHAMOTO HIROYUKI
IPC: C23C30/00
Abstract: PURPOSE:To produce an exhaust valve excellent in high temp. strength, oxidation resistance, corrosion resistance, and wear resistance by forming a base material part and a part requiring wear resistance by using TiAl intermetallic compounds having dissimilar compositions, respectively, at the time of producing, e.g. an exhaust valve for automobile engine. CONSTITUTION:At the time of producing a valve, such as exhaust valve for automobile engine, a TiAl intermetallic compound excellent in high temp. strength, creep strength, high temp. oxidation resistance, and corrosion resistance and containing 33-38wt.% Al is used as a base material 1 forming a valve body, and a wear resistant layer 4 composed essentially of a Ti3Al intermetallic compound containing 28-31wt.% Al and having hardness and particularly superior wear resistance and excellent in high temp. oxidation resistance, corrosion resistance, etc., is formed on a valve face part 2 and an axle end part 3 requiring wear resistance in particular by a surfacing method, etc.
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Patent Agency Ranking
公开(公告)号：JPH01255677A
公开(公告)日：1989-10-12
申请号：JP8186788
申请日：1988-04-02
Applicant: TOYOTA MOTOR CORP
Inventor： YOSHIDA MAKOTO , NAKAGAWA MASAHIRO , KOYAMA HARATSUGU , KANAZAWA TAKAAKI
IPC: C23C26/00
Abstract: PURPOSE:To obtain the title sliding member with the porous surface having excellent resistance to seizing and wear by mixing the powder of a polymeric material and the powder of a wear-resistant metallic material to obtain an alloying material and alloying the material on a metallic substrate with the use of high-density energy. CONSTITUTION:The powder of an A-Si-Mg alloy, etc., as a wear resistance imparting material and the powder of polyester, etc., as the polymeric material are mixed so that the content of the polymeric material is controlled to 5-80wt.%. The alloying material powder is stuck on the surface of the substrate 1 of an Al alloy, etc., to form a powder layer 2. A TIG arc 4 as the high- density energy is then impressed by using a TIG torch 3, etc. As a result, the powder layer 2 and the surface layer of the substrate 1 are simultaneously melted, and alloyed to form a porous surface alloyed layer 5. A sliding member corresponding to the desired characteristics can be produced by adjusting the mixing ratio of the alloying materials and the impressing condition of high density energy.
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公开(公告)号：JPH01127655A
公开(公告)日：1989-05-19
申请号：JP28236987
申请日：1987-11-09
Applicant: TOYOTA MOTOR CORP
Inventor： YOSHIDA MAKOTO , NAKAGAWA MASAHIRO , KOYAMA HARATSUGU , KANAZAWA TAKAAKI
Abstract: PURPOSE:To stably form re-solidified layer having uniform treating depth and wide width by shifting a torch for generating TIG arc to longitudinal direction while oscillating toward width direction at the center part between parallel projected lines formed on surface of a base material. CONSTITUTION:To range having the prescribed length on the surface of the metal base material 1 of Al alloy casting, etc., the remelting treatment is executed by impressing the TIG arc to execute reforming of the surface. At the time of executing this remelting treatment, beforehand, two lines of projections 11, 12 on the surface of the base material 1 in the above range are formed as parallel at the prescribed interval along the longitudinal direction. Further, at the time of impressing the TIG arc, the torch 2 for generating the TIG arc 3 is shifted to longitudinal direction as the arrow mark P while oscillating toward width direction in the above range at the center part of the projections 11, 12. By this method, the arc 3 is alternately concentrated to the projections 11, 12 to make heat input much, and the re-solidified layer 6 having uniform depth to width direction is formed as the whole, without much ruggedness of the surface and the range having the prescribed width can be effectively treated.
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公开(公告)号：JPH01127654A
公开(公告)日：1989-05-19
申请号：JP28236887
申请日：1987-11-09
Applicant: TOYOTA MOTOR CORP
Inventor： KOYAMA HARATSUGU , NAKAGAWA MASAHIRO , KANAZAWA TAKAAKI , YOSHIDA MAKOTO
Abstract: PURPOSE:To stably form re-solidified layer having uniform depth and wide width by shifting a torch for generating TIG arc to the longitudinal direction while oscillating toward width direction at center part between parallel recessed grooves machined on surface of a base material. CONSTITUTION:On the surface of the base material 1 composing of a metal casting of aluminum alloy, etc., two straights of the recessed grooves 11, 12 along the longitudinal direction in the prescribed range are beforehand machined as parallel at the prescribed interval (l). Successively, by impressing the TIG arc to this range, remelting treatment is executed to improve the characteristic. Then, the torch 2 for generating the TIG arc 3 is shifted to the longitudinal direction as the arrow mask P while oscillating toward width direction in the above range at the center part between the above two lines of the recessed grooves 11, 12. Further, 1/2 of the above interval (l) is desirable to be shorter than the arc length (h). By this method, the arc 3 is alternately concentrated to the recessed grooves 11, 12 to make heat input much and the re-solidified layer 6 can be formed at uniform depth to width direction as the whole.
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公开(公告)号：JPH01104906A
公开(公告)日：1989-04-21
申请号：JP7319487
申请日：1987-03-27
Applicant: TOYOTA MOTOR CORP
Inventor： KANAZAWA TAKAAKI , MIYAKE JOJI , KOYAMA HARATSUGU , OISHI SHINJI
Abstract: PURPOSE:To improve abrasion resistance and reduce attackability against its opposite member and so on by forming an alloyed cast iron layer with a specific constituent on the surface of a valve seat part in a cylinder head body consisting of cast iron extending over more than the specified depth. CONSTITUTION:On the surface of a valve seat part 2 in a cylinder head body 1 consisting of cast iron, one type or more than two types of metallic elements higher in a carbide forming trend than iron (Fe) are contained as much as 0.1-10wt.% in total, and an alloyed cast iron layer 3 contained with either of Ni or Co or both as much as 0.1-15wt.% in total is formed over the depth of more than 0.2mm. The alloyed cast iron layer 3 uses austenite and/or pearlite for the ground, while a residual cementite of 2-15% exists thereon, and it is set to a layer of hardness Hv250-400 made up of a structure where massive graphite is crystallized. According to this method, abrasion resistance is improvable and, what is more, attackability against an opposite valve face plane is reducible.
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公开(公告)号：JPH01100298A
公开(公告)日：1989-04-18
申请号：JP25672387
申请日：1987-10-12
Applicant: TOYOTA MOTOR CORP
Inventor： KOYAMA HARATSUGU , NAKAGAWA MASAHIRO , KANAZAWA TAKAAKI
IPC: C25D11/04
Abstract: PURPOSE:To form a uniform and dense anodic oxide film having superior corrosion resistance by alloying the surface layer of an Al alloy casting with an Al alloy having a higher alloying degree than the casting under high density heating energy and by carrying out anodic oxidation. CONSTITUTION:High density heating energy 3 such as laser beams or electron beams are projected on an alloying material 2 to simultaneously melt the material 2 and the surface layer of an Al alloy casting 1 under the material 2. In the resulting molten pool 4, the Al alloy of the surface layer of the casting 1 and the material 2 are integrated to form an alloy layer 5. The rough surface of the layer 5 is smoothened and the smoothened surface 6 is anodically oxidized. A uniform and dense anodic oxide film 7 having superior corrosion resistance can be formed.
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