公开(公告)号：JPH05115990A

公开(公告)日：1993-05-14

申请号：JP30532091

申请日：1991-10-24

Applicant: TOYOTA MOTOR CORP

Inventor： KAWASAKI MINORU ,  KOYAMA HARATSUGU ,  KATO SHINJI ,  SATO AKIO

IPC: B23K26/34 ,  B23K26/18 ,  B23K26/21 ,  B23K26/32 ,  C25D11/04

Abstract: PURPOSE:To form a cladding by welding layer of high quality with low cost on the front surface of the aluminum base material by using a laser beam of low power. CONSTITUTION:At first, the front surface of aluminum base material 10 to be clad by welding is treated with an anodized aluminum and an oxidised film 10 is formed. Next, by supplying a cladding powder 16 on the oxidised film 10 and irradiating a laser beam 22 on the cladding powder, the front surface of the cladding powder and the base material is melt, the cladding by welding layer 24 is formed by cooling these.

公开(公告)号：JPH04351270A

公开(公告)日：1992-12-07

申请号：JP17310791

申请日：1991-06-18

Applicant: TOYOTA MOTOR CORP

Inventor： KAWASAKI MINORU ,  TAKAGI MUNEYA ,  MORI KAZUHIKO ,  KATO SHINJI ,  HOZOJI HIDEYUKI ,  ISE NOBUTAKA ,  KOYAMA HARATSUGU ,  ICHINOHE MITSUYUKI

IPC: B23K9/04 ,  B23K26/34 ,  B23K37/047 ,  F02F1/24

Abstract: PURPOSE:To efficiently execute build-up treatment, etc., to a valve seat part in low cost. CONSTITUTION:This is cylinder head supporting device for treating the valve seat parts in the cylinder head 10 arranging plural valve seat parts 18 along the straight line in order. The device has a laying table 22 for supporting the cylinder head so that surface 24 to be treated in the valve seat part to be treated becomes horizontal, a rotary driving device 48 for supporting the laying table as rotatable around rotating axis 48 and as movable to the straight line along the straight line and rotating the laying table around the rotating axis and a positioning device 82 for positioning the laying table to the rotary driving device so that the axis 20a in the valve seat mart to be treated corresponds to the rotating axis.

公开(公告)号：JPH01201489A

公开(公告)日：1989-08-14

申请号：JP2716988

申请日：1988-02-08

Applicant: TOYOTA MOTOR CORP

Inventor： KANAZAWA TAKAAKI ,  NAKAGAWA MASAHIRO ,  KOYAMA HARATSUGU ,  YOSHIDA MAKOTO

IPC: C23C26/00 ,  F02F3/00 ,  F02F5/00 ,  F16N15/00

Abstract: PURPOSE:To produce a sliding member made of an Al alloy having excellent seizure resistance and wear resistance by alloying the hydride of a metal on the surface layer of an Al alloy base material by using high-density energy, thereby crystallizing an intermetallic compd. and forming pores. CONSTITUTION:Powder 2 of the hydride of the metal such as Ti or Zr which can form the intermediate compd. with Al is coated and disposed on the surface of the base material consisting of the Al alloy. An arc 4 is then applied onto this powder fixed layer 2 from above by using a TIG torch 3 to melt the powder fixed layer 2 and the surface layer of the Al alloy base material 1 on the lower side thereof. The alloyed layer is thereby formed on the surface layer of the base material. The high-hardness intermetallic compd. is crystallized into the surface layer by this alloying treatment; in addition, the pores which function as oil pools are formed to 2-30% porosity by the gaseous hydrogen which is generated by decomposition of the metal hydride.

公开(公告)号：JPH01116326A

公开(公告)日：1989-05-09

申请号：JP27193587

申请日：1987-10-29

Applicant: TOYOTA MOTOR CORP

Inventor： SHIMODA KENJI ,  NAKAGAWA MASAHIRO ,  TOMOTA TAKASHI ,  OISHI SHINJI ,  MIYAKE JOJI ,  OZAWA MAKOTO ,  ICHIKAWA SHIGERU ,  KOYAMA HARATSUGU ,  KAKIHARA KENJI

IPC: F16D65/12

Abstract: PURPOSE:To improve the abrasion resistance of a disc rotor by mixing, into a Fe-Cr, C alloy powder, a copper or copper alloy powder and the hard particles of the carbide and/or the oxide of a metal to be dispersed approximately evenly into a thermally sprayed layer. CONSTITUTION:Thermally sprayed layers 2 having abrasion and heat resistance are formed on the sliding surfaces of a disc rotor main body 1 constituting a brake for automobiles or the like. A mixture consisting of a Fe-Cr, C alloy powder and a copper or copper alloy powder, for instance, aluminum bronze powder 35-65% by weight, hard particles powder of the carbide and/or oxide of metal, for instance, Cr2C2, Al2O3, TiC or the like 10-30% by eight is used as the thermally sprayed material and dispersed approximately evenly into the thermally sprayed layers 2. In this manner, the abrasion resistance of a disc rotor can further be improved.

公开(公告)号：JPS62296984A

公开(公告)日：1987-12-24

申请号：JP14249886

申请日：1986-06-18

Applicant: TOYOTA MOTOR CORP

Inventor： OISHI SHINJI ,  MIYAKE JOJI ,  KANAZAWA TAKAAKI ,  KOYAMA HARATSUGU

IPC: B23K26/34 ,  B23K9/04 ,  C23C26/00 ,  F01L3/02

Abstract: PURPOSE:To obtain the excellent performance suitable for an intake valve, etc., by forming the alloying layer including a specific Mo by projecting a high density energy from the above of the Mo alloying material which is arranged on the valve face and performing a heat treatment at the specified temp. CONSTITUTION:An Mo or Mo containing alloy is arranged as an alloying material on the face 2 of the valve main body 1 or a martensite group heat resistant steel and the alloying material and the base metal surface layer of the lower side thereof are rapidly melted by projecting a high density energy beam from the above thereof. In succession with stopping the projection of the high density energy beam, the heat quickly moves to the base metal side and the melted alloying layer 3 thereof is frozen with its rapid cooling. In this case, the arrangement amount per unit area of the alloying material is made to become 1-15wt% on the Mo of the alloying layer finally obtd. Since the alloying layer thus obtd. becomes in the hardened state, an annealing is performed at the temp. within the range of 300-600 deg.C in succession, the wear resistance is increased and counter part attack is reduced as well.

公开(公告)号：JPS6288828A

公开(公告)日：1987-04-23

申请号：JP22806485

申请日：1985-10-14

Applicant: TOYOTA MOTOR CORP

Inventor： OISHI SHINJI ,  MIYAKE JOJI ,  KOYAMA HARATSUGU

IPC: F16D65/12 ,  C23C4/04

Abstract: PURPOSE:To enlarge the coefficient of friction, to reduce thermal deformation and defective beads, and to improve durability by forming a thermal spraying layer having a thickness of at least 30mum or more and porosity of 2% or less by using spraying powder having the average particle of 20-30mum. CONSTITUTION:A disc rotor body 1 is manufactured by casting by using gray cast iron, and mixed power which is composed of 36wt% Fe, 50wt% Cr, 4wt% C, and 10wt% Mo, and has particle size ranging from 10-50mum (average particle size : 25mum) is plasma-sprayed 0.3mm thick on a sliding surface of the disc rotor body to form a thermal spraying layer 2. Thus, the thermal spraying layer 2 becomes fine and has porosity of 2% or less to restrain a lowering of thermal conductivity. Accordingly, thermal deformation of the disc rotor and the occurrence of cracks can be prevented, the coefficient of friction is enlarged, and the durability can be improved.

公开(公告)号：JPS61264140A

公开(公告)日：1986-11-22

申请号：JP10472385

申请日：1985-05-16

Applicant: TOYOTA MOTOR CORP

Inventor： KOYAMA HARATSUGU ,  MIYAKE JOJI ,  KANAZAWA TAKAAKI

IPC: B23K26/34 ,  B22D19/00 ,  B22D19/08 ,  B23K9/04 ,  B23K15/00 ,  C22C1/02 ,  C22C47/00 ,  C22C47/08

Abstract: PURPOSE:To form an alloyed surface layer reduced in segregation as well as in dislocation of composition by disposing a porous body of material to be alloyed on the required part in a mold, charging a mold with molten base material and then irradiating with high-density heat energy the composite part of an intermediate product in which both are integrated into one body. CONSTITUTION:The porous body of material to be alloyed is disposed on the required part in the mold for casting and then the mold is charged with the molten base material, so that the intermediate product 6 having the composite part 1B in which the material to be alloyed and the base material are integrated into one body is cast. Subsequently, the composite part 1B of the intermediate product 6 is irradiated with the high-density heat energy 7 such as TIG arc, electron beam, laser, etc., to form the alloyed surface layer 1C.

公开(公告)号：JPS61246377A

公开(公告)日：1986-11-01

申请号：JP8712585

申请日：1985-04-22

Applicant: TOYOTA MOTOR CORP

Inventor： KANAZAWA TAKAAKI ,  MIYAKE JOJI ,  KOYAMA HARATSUGU

IPC: C23C10/28 ,  C23C10/60 ,  C23C26/00

Abstract: PURPOSE:To produce a cast iron alloy member having stable resistance to formic acid corrosion inexpensively by ironing the surface of a cast iron base material to form a surface coating layer consisting of an Fe-Ni solid soln. contg. an adequate concn. of Ni thereon. CONSTITUTION:The surface of the cast iron base material is coated with Ni by a method such as thermal spraying method, PVD or coating of Ni powder mixed with a binder such as PVA and thereafter high-density energy such as laser or TIG are is irradiated onto the coating from above the same to melt the above-mentioned coating layer and the surface layer of the base material under the same, thereby alloying Ni to the base material metal. the surface coating layer consisting of the Fe-Ni solid soln. is thus formed on the surface of the above-mentioned base material. The conditions thereof are adjusted in the stage of the above-mentioned alloying so that the average concn. of Ni in the surface coating layer is made 1-80wt%. The cast iron alloy member which has the resistance to formic acid corrosion and is obtd. in the above-mentioned manner prevents extremely effectively the formic acid corrosion when used for the inside surface of the cylinder bore of an engine for pure methanol, etc.

公开(公告)号：JPS61201784A

公开(公告)日：1986-09-06

申请号：JP4308285

申请日：1985-03-04

Applicant: TOYOTA MOTOR CORP

Inventor： KANAZAWA TAKAAKI ,  MIYAKE JOJI ,  KOYAMA HARATSUGU

IPC: C23C26/00 ,  C22C21/00 ,  C22F1/00 ,  C22F1/04

Abstract: PURPOSE:To obtain an Al alloy member having superior heat and wear resistances by alloying the surface of an Al alloy as a base material with Ni and Ti and regulating the average concns. of Ni and Ti in the resulting Al-base composite layer. CONSTITUTION:The surface of an Al alloy as a base material is alloyed with Ni and Ti at a part requiring heat and wear resistances to form an Al-base composite layer. The average concn. of Ni in the composite layer is regulated to >=5wt%, the average concn. of Ti to >=5wt%, and the average total concn. of Ni and Ti to

公开(公告)号：JPS61194115A

公开(公告)日：1986-08-28

申请号：JP3396185

申请日：1985-02-22

Applicant: TOYOTA MOTOR CORP

Inventor： KOYAMA HARATSUGU ,  MIYAKE JOJI ,  KANAZAWA TAKAAKI

IPC: C21D9/00 ,  F16H63/32

Abstract: PURPOSE:To obtain a product having the high wear resistance on the inside surface of the part to be fitted to a shift lever with good workability in a shift fork made of a steel plate by using a low-carbon steel for steel plate stock, enriching locally the carbon content on the inside surface of the above-mentioned fitting part and hardening the inside surface. CONSTITUTION:The steel plate which consists of a steel having =0.35wt% carbon content for the purpose of enriching carbon so that the carbon content of the hardened layer to be finally obtd. attains 0.25-0.45wt% is disposed on the inside surface of the part 4. High-density energy such as laser or plasma arc is irradiated onto the enriching material from above to heat locally and quickly the material, by which the enriching material and the surface layer part of the steel plate beneath said material are melted and alloyed. The molten layer is quickly cooled when the above-mentioned irradiation is stopped in succession thereto. The carbon is thereby enriched and the hardened layer 11 having >=350 Hv hardness is obtd.