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1. 发明专利

JPH03271355A TITANIUM-ALUMINUM ALLOY MATERIAL EXCELLENT IN OXIDATION RESISTANCE 失效
公开(公告)号：JPH03271355A
公开(公告)日：1991-12-03
申请号：JP6981290
申请日：1990-03-22
申请人： TOYOTA MOTOR CORP , NIHON KARORAIZU KOUGIYOU KK
发明人： KOYAMAHARA TSUGI , NAKAGAWA MASAHIRO , YOSHIDA MAKOTO , MORIKAWA TAKASHI , SHAMOTO HIROYUKI , YOSHIKAWA RIHEI
IPC分类号： C23C2/12 , C23C10/48 , C23C14/02 , C23C14/16 , C23C28/02
摘要： PURPOSE:To obtain a Ti-Al alloy material excellent in oxidation resistance by providing an Al pack cementation layer to the surface of a base material composed of Ti-Al alloy and further forming a pure Al film of specific thickness on the above layer. CONSTITUTION:An Al pack cementation layer is provided to the surface of a base material composed of Ti-Al alloy. The above treatment layer can be formed by filling a vessel with the above base material together with a diffusion agent cinsisting of Al powder, Al2O3 powder, and HN4Cl powder and carrying out heating at about 1100 deg.C. A pure Al film of 5-30mum thickness is formed on the above treatment layer. This pure Al film is formed by a hot dipping method, a PVD method, such as vacuum vapor deposition and ion plating, etc. By this method, the Ti-Al alloy material excellent in oxidation resistance can be obtained.

2. 发明专利

JPS63140125A SYNCHRONIZING RING 失效
公开(公告)号：JPS63140125A
公开(公告)日：1988-06-11
申请号：JP28834786
申请日：1986-12-03
申请人： TOYOTA MOTOR CORP
发明人： SHIMODA KENJI , MIYAKE JOJI , KOYAMAHARA TSUGI , OISHI SHINJI , KANAZAWA TAKAAKI
IPC分类号： F16H3/12 , C21D1/06 , F16D23/02 , F16D23/06
摘要： PURPOSE:To strengthen the corner portion of a keyway and to avoid the occurrence of crack by locally forming a remelting quench solidified layer on a boundary portion between the groove base and the side wall of the keyway. CONSTITUTION:A remelting quench solidified layer 5 treated by high density energy such as TIG arc, laser, electron beam, plasma arc and so on is locally formed on a corner portion corresponding to a boundary portion between the groove base 3B and the side wall 3A of a synchronizing ring keyway 3. The remelting quench solidified layer 5 has crystal structure remarkably refined by quench solidification so that the strength is remarkably increased to effectively prevent the occurrence of crack due to repeated stress concentration.

3. 发明专利

JPS6483676A WEAR RESISTANT AL ALLOY MEMBER 失效
公开(公告)号：JPS6483676A
公开(公告)日：1989-03-29
申请号：JP24351887
申请日：1987-09-28
申请人： TOYOTA MOTOR CORP
发明人： KANAZAWA TAKAAKI , NAKAGAWA MASAHIRO , KOYAMAHARA TSUGI
IPC分类号： C23C26/00 , F02F3/00 , F02F3/10
摘要： PURPOSE:To obtain a wear resistant Al alloy member having excellent wear resistance and durability by forming an alloyed layer which is crystallized with CrAl7 at a specific area rate by alloying of Cr on the prescribed surface of an Al alloy base material. CONSTITUTION:The alloyed layer in which at least the intermetallic compd. CrAl7 is crystallized in the area rate within a 10-50% range into the Al alloy matrix by alloying of Cr is formed on the surface of the base material consisting of the Al alloy in the part where the wear resistance of the base material is required. The formation of the alloyed layer mentioned above is executed by a method of applying Cr powder in the form of a slurry on the surface of the desired part of the Al alloy base material and applying the Cr coating on said surface, then applying high-density energy to the Cr coating layer from above to alloy said layer. The Al alloy member which is less segregated with the intermetallic compd. in the alloyed layer and has the smooth and highly wear resistant surface of the alloyed layer is thereby obtd.

4. 发明专利

JPS61257496A FORMATION OF ANODIZED FILM FOR ALUMINUM ALLOY CASTING 失效
公开(公告)号：JPS61257496A
公开(公告)日：1986-11-14
申请号：JP9937585
申请日：1985-05-10
申请人： TOYOTA MOTOR CORP
发明人： KOYAMAHARA TSUGI , MIYAKE JOJI , KANAZAWA TAKAAKI
IPC分类号： C25D11/04 , C22F1/00 , C22F1/04 , C23C26/00 , C25D11/16
摘要： PURPOSE:To form an anodized film which is uniform in quality and dense and is highly resistant to wear and corrosion by irradiating high-density heating energy onto the surface of an Al alloy casting to melt quickly the surface layer and solidifying again and quickly said layer then subjecting the surface layer to an anodic oxidation treatment. CONSTITUTION:The high-density heating energy 3 such as TIG arc or electron beam is irradiated onto the surface layer 2A to be formed with the anodized film on the surface of the Al alloy casting 1 to melt quickly the surface layer 2A. The molten layer is then quickly solidified by unidirectional solidification to extrude defects such as pinholes, blowholes and cavities in said part 2B to the outside, thereby forming the finer structure. The surface of the melted and resolidified part 2B is smoothed by machining or polishing. The surface of the part 2B is then subjected to the anodic oxidation treatment by the conventional practice to form the anodized film 4 thereon. The surface characteristic of the Al alloy casting material is remarkably improved by the above-mentioned method.

5. 发明专利

JPS6238786A IMPROVEMENT PROCESSING METHOD FOR CYLINDER HEAD FOR INTERNAL COMBUSTION ENGINE MADE OF ALUMINUM ALLOY CASTING 失效
公开(公告)号：JPS6238786A
公开(公告)日：1987-02-19
申请号：JP17738685
申请日：1985-08-12
申请人： TOYOTA MOTOR CORP
发明人： KOYAMAHARA TSUGI , MIYAKE JOJI , KANAZAWA TAKAAKI
IPC分类号： C23C26/00 , B23K9/04 , B23K15/00 , B23K26/352 , C22C1/00 , C22C1/02 , C23C24/10 , F02B75/22 , F02F1/24
摘要： PURPOSE:To improve the characteristic easily and sufficiently to a quality of a high load having a high required request balue of a mechanical property by converting specified components to an alloy by irradiating a high density energy to a part between valves of a cylinder head and a part between the valve and a chamber. CONSTITUTION:One kind or more of Fe, Ni, Co, V, Zr, and Ce are converted to an alloy by irradiating a high density energy to an inter-valve part 4 between a suction valve and an exhaust valve of a cylinder head for an internal combustion engine, made of an aluminum alloy casting, and inter-valve/chamber parts 5, 6. In this way, maintaining an advantage that the head is made of an aluminum alloy casting as the cylinder head, a mechanical characteristic of a high load part of the cylinder head is improved enough.

6. 发明专利

JPH02223629A SUB-COMBUSTION CHAMBER FOR DIESEL ENGINE 失效
公开(公告)号：JPH02223629A
公开(公告)日：1990-09-06
申请号：JP2950589
申请日：1989-02-08
申请人： TOYOTA MOTOR CORP , TOYOTA CENTRAL RES & DEV
发明人： YOSHIDA MAKOTO , NAKAGAWA MASAHIRO , KOYAMAHARA TSUGI , NISHINO KAZUAKI , TAKAMIYA HIROYUKI
IPC分类号： F02B19/16 , F02B3/06
摘要： PURPOSE:To satisfy characteristics required for a body portion and the acute angle portion of the peripheral edge of a nozzle hole portion at the same time by forming a re-melted treatment layer which is treated using high-density energy on the acute angle portion at least of the peripheral edge portion of the nozzle hole portion. CONSTITUTION:On the acute angle portion 3 at least of the peripheral edge portion of a nozzle hole portion 2 in a chamber body 7 made of heat resistant steel, a re-melt treatment layer 8 is formed which is treated using high-density energy with uniformly fine organization and less amount of carbon than the heat resistant steel of base material. As a result, the chamber body 7 is certainly prevented from dropping out of a cylinder head due to transformation and at the same time can be formed as a chamber of satisfactory durability with the nozzle hole portion 2 restrained from being involved in crack.

7. 发明专利

JPS6397858A CYLINDER HEAD FOR INTERNAL COMBUSTION ENGINE 失效
公开(公告)号：JPS6397858A
公开(公告)日：1988-04-28
申请号：JP24254486
申请日：1986-10-13
申请人： TOYOTA MOTOR CORP
发明人： TOMOTA TAKASHI , MIYAMOTO NORITAKA , KOYAMAHARA TSUGI
IPC分类号： F02F1/24
摘要： PURPOSE:To prevent heat accumulation from occurring in a valve spacing part as well as to keep off the occurrence of a crack in the said part, by forming a thermal spraying layer, consisting of such a material as higher in heat conductivity than a cylinder base material, over an area including a part between a suction port and an exhaust port among surfaces on a combustion chamber part. CONSTITUTION:A combustion chamber part 1 at the underside of a cylinder head for an internal combustion engine is formed with both suction and exhaust ports 2 and 3, where suction and exhaust valves are set up, and a chamber hole 4. In the suchlike cylinder head, a thermal spraying layer, consisting of such a material as higher in heat conductivity than a cylinder head base material, is formed in a part between a suction port 2 and an exhaust port 3, that is, including a valve spacing part 6 as shown in oblique lines in illustration, and over a wider area than the valve spacing part 6. And, it is desirable that this thermal spraying layer is to form not only the valve spacing part 6 but also a part 7A between the suction port 2 and the chamber hole 4 as well as a part 7B between the exhaust port 3 and the chamber hole 4. With this constitution, speedy diffusion of heat in combustion added to the valve spacing part 6 is well promoted.

8. 发明专利

JPS62174388A DISK ROTOR AND ITS PRODUCTION 失效
公开(公告)号：JPS62174388A
公开(公告)日：1987-07-31
申请号：JP1658886
申请日：1986-01-28
申请人： TOYOTA MOTOR CORP
发明人： KANAZAWA TAKAAKI , MIYAKE JOJI , KOYAMAHARA TSUGI
IPC分类号： F16D65/12 , C22C37/00 , C23C26/00
摘要： PURPOSE:To improve the wear resistance and heat resistance of the sliding surface of a disk rotor by disposing a metal (alloy) having a high tendency to form carbide on the sliding surface and irradiating high-density energy thereto, then subjecting the surface to the heat treatment under specific conditions. CONSTITUTION:The metallic element such as Cr or Mo or the alloy thereof having the higher tendency to form the carbide than Fe is disposed to the place of a cast iron disk rotor to be formed as the sliding surface. The high density energy is then irradiated thereto to quickly melt and quickly resolidify the metal or the alloy and to form the chilled alloy layer with 0.2-10wt% concn. of the above-mentioned metallic element. The chilled alloy layer is heated to the A1 transformation point or above and the solidus phase temp. or below and is then cooled. The alloyed cast iron layer of 250-400 HV hardness in which the base is pearlite or consists essentially of pearlite, the residual cementite exists at 2-15% and the lumped graphite is crystallized is formed to >=0.2mm depth. The disk rotor having the resistance to heat and wear and excellent workability and rust preventiveness is obtd. by the above-mentioned method.

9. 发明专利

JPS62188728A PRODUCTION OF BEARING RACE 失效
公开(公告)号：JPS62188728A
公开(公告)日：1987-08-18
申请号：JP3132086
申请日：1986-02-15
申请人： TOYOTA MOTOR CORP
发明人： KOYAMAHARA TSUGI , MIYAKE JOJI , KANAZAWA TAKAAKI
IPC分类号： C21D9/40
摘要： PURPOSE:To efficiently produce a bearing race having superior mechanical properties by working a plain carbon steel into the body of a bearing race, building up a bearing steel on the part of the body forming a rolling surface with high density energy, hardening and tempering the bearing steel. CONSTITUTION:A plain carbon steel or a low-alloy steel such as S-Cr steel is worked into a blank 1 for an inner race. A bearing steel such as SUJ steel is built up on the part 2 of the blank 1 forming a sliding surface brought into contact with balls, that is, a rolling surface by plasma building up or other method to form a built-up part 3. This built-up part 3 is hardened, tempered and polished to form a rolling surface 4. Thus, an inner race 5 of a prescribed shape having improved fatigue strength is efficiently produced at a reduced cost.

10. 发明专利

JPS61270387A FORMATION OF PLATED SURFACE LAYER ON ALUMINUM ALLOY CASTING 失效
公开(公告)号：JPS61270387A
公开(公告)日：1986-11-29
申请号：JP11278485
申请日：1985-05-25
申请人： TOYOTA MOTOR CORP
发明人： KOYAMAHARA TSUGI , MIYAKE JOJI , KANAZAWA TAKAAKI
IPC分类号： C25D5/44
摘要： PURPOSE:To obtain superior surface characteristics such as superior wear, corrosion and heat resistances by irradiating high density heating energy on the surface of a part on which a plated layer is formed to rapidly melt the surface layer, rapidly solidifying the molten layer again, and plating the surface of the solidified layer. CONSTITUTION:High density heating energy 3 such as TIG arc, electron beams or laser beams is irradiated on the surface of the part of an Al alloy casting 1 on which a plated layer is formed to rapidly melt the surface layer 2A. The molten layer is rapidly solidified again by stopping the irradiation to form a surface free from defects such as pinholes or blow holes. The surface of the solidified layer is then plated.

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