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公开(公告)号：JPS6191323A
公开(公告)日：1986-05-09
申请号：JP21499684
申请日：1984-10-12
Applicant: Toyota Motor Corp
Inventor： KANAZAWA TAKAAKI , TOMOTA TAKASHI , KOYAMA HARATSUGU , OISHI SHINJI , MIYAKE JOJI
Abstract: PURPOSE:To form a particle-dispersed surface coating layer having an excellent surface friction and wear characteristic to a member to be subjected to surface coating by irradiating high-density energy to the surface of said member to heat and melt the surface and projecting and injecting fine hard particles into the molten pool formed in such a manner. CONSTITUTION:The fine hard particles 4 are projected and injected by a thermal spraying method such as plasma spraying of a high particle speed of thermal spraying into the molten pool 3 formed by irradiating the high-density energy 2 such as laser beam, TIG arc, plasma arc or electron beam to the surface of the member 1 to be subjected to surface coating to heat and melt said surface. The member 1 is moved toward an arrow A direction simultaneously with the above-mentioned operation to cool the pool 3, by which the fine hard particles 5b are dispersed uniformly into the material 5a constituting the base structure with good bondability. The particle-dispersed surface coating layer 5 is thus formed.
Abstract translation: 目的：通过向所述构件的表面照射高密度能量以对表面进行加热和熔化并形成突出和注入以形成具有优异的表面摩擦和磨损特性的颗粒分散表面涂层 以这种方式形成的熔池中的细小的硬颗粒。 构成：通过热喷涂法将高硬度粒子4投射注入，例如通过将激光束，TIG弧等高密度能量2照射而形成的熔池3等离子喷涂， 等离子弧或电子束到构件1的表面进行表面涂层以加热和熔化所述表面。 通过上述操作，使构件1向箭头A方向移动以冷却池3，由此细小的硬颗粒5b均匀地分散在构成基体结构的材料5a中，具有良好的粘合性。 由此形成颗粒分散表面涂层5。
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公开(公告)号：JPS6179783A
公开(公告)日：1986-04-23
申请号：JP20229584
申请日：1984-09-27
Applicant: Toyota Motor Corp
Inventor： KOYAMA HARATSUGU , MIYAKE JOJI , KANAZAWA TAKAAKI , OISHI SHINJI , TOMOTA TAKASHI
Abstract: PURPOSE:To form a graphitized layer having an excellent wear characteristic on a member surface by coating a mixed powder coating material consisiting of the powder of a graphitized layer forming material and the powder of a base-structure constituting material on the surface then irradiating a high-density energy heating heat flow flux thereto. CONSTITUTION:The mixed powder coating material 2 consisting of the powder of the graphitized layer forming material and the powder of the base-structure constituting material is coated on the surface of the member 1. The material 2 is preferably constituted of pulverous graphite particles 3 coated of the base-structure constituting material and may be further constituted by adding the powder 4 of the base-structure constituting material which is the same as or different from the base-structure constituting material used for the above-mentioned coating to said material. The high-density energy heating heat flow flux 5 such as laser beam, TIG arc, plasma arc or electron beam is irradiated to the above-mentioned mixed powder coating material to melt the base-structure constituting material in the material 2, by which the graphitized layer 6 consisting of the pulverous graphite particles 7 and the base-structure constituting material 8, having the high binding force to the member 1 and having the excellent friction wear characteristic is formed on the member 1 surface.
Abstract translation: 目的：通过将由石墨化层形成材料的粉末和基体结构构成材料的粉末涂覆在表面上的混合粉末涂料形成在构件表面上形成具有优异磨损特性的石墨化层，然后照射高 密度能量加热热流通量。 构成：将由石墨化层形成材料的粉末构成的混合粉末涂料2和基体结构构成材料的粉末涂覆在构件1的表面上。材料2优选由涂覆有粉末状石墨颗粒3 并且还可以通过将与上述涂料中使用的基础结构构成材料相同或不同的基础结构构成材料的粉末4加入到所述材料中来构成。 对上述混合粉末涂料照射激光束，TIG弧，等离子弧或电子束等高密度能量加热热流通量5，熔化材料2中的基体构成材料， 在构件1的表面上形成有由粉状石墨粒子7和基体构成材料8构成的石墨化层6，对构件1具有较高的粘结力并具有优异的摩擦磨损特性。
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公开(公告)号：JPS6124877A
公开(公告)日：1986-02-03
申请号：JP14570784
申请日：1984-07-13
Applicant: Toyota Motor Corp
Inventor： TOMOTA TAKASHI , MIYAKE JOJI , KOYAMA HARATSUGU , KANAZAWA TAKAAKI , OISHI SHINJI
CPC classification number: F16J1/16 , C22C47/00 , F05C2253/16
Abstract: PURPOSE:To reduce wear of a snap ring by forming a layer of metallization spray at that end part of a piston pin, made of fiber-reinforced metal, where the snap ring is to be fitted. CONSTITUTION:A piston pin 3 is made of a fiber-reinforced metal, which consists of Al alloy as matrix and long alumina fibers 4 of mean dia. 3mum and mean length 2.5mm. as reinforcement approx. 50% by volume. These long fibers 4 are oriented as stretching in parallel with the axis of piston pin 3. A layer of fusion spray of molybdene 5 is formed at the outside surfaces of the ends of piston pin where a snap ring is fitted, wherein the molybdene layer is provided in consideration of its low attacking characteristic to the snap ring.
Abstract translation: 目的：通过在活塞销的端部形成一层金属喷涂以减少卡环的磨损，该活塞销由纤维增强金属制成，其中安装卡环。 构成：活塞销3由纤维增强金属制成，由Al合金作为基体和长的氧化铝纤维4构成。 3mum，平均长2.5mm。 作为加固约 50％（体积）。 这些长纤维4被定向为与活塞销3的轴线平行地拉伸。在活塞销的端部的外表面上形成有钼合金层5，其中安装有卡环，其中钼层是 考虑到其对卡环的低攻击特性。
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公开(公告)号：JPS59108849A
公开(公告)日：1984-06-23
申请号：JP21989082
申请日：1982-12-14
Applicant: Toyota Motor Corp
Inventor： KOYAMA HARATSUGU , SHINOSAWA TAMIO , GUNICHI MASAHIRO
CPC classification number: F02B23/0603 , F02B3/06 , F02B23/0636 , F02B23/0675 , F02B23/0696 , F02B2275/14 , F05C2201/021 , Y02T10/125
Abstract: PURPOSE:To improve resistance against thermal shock and resistance against fatigue by rapidly remelting and quenching the heat spot part and edge part of a piston head part in an aluminium alloy piston formed through metal mold casting. CONSTITUTION:A piston body 1 for direct injection Diesel internal-combustion engine is made of a metal mold-cast alluminium alloy, and the hot spot part 2 of a piston head is obtained by locally concentrating high density energy such as electron beams, a laser, plasma, and TIG arc and allowing said spot part to be remelted at a high speed. And, a remelted part is quenched and its texture is made fine bystopping the heating before the ambient temperature is raised.
Abstract translation: 目的：通过快速重熔和淬火通过金属模具铸造形成的铝合金活塞中的活塞头部件的热点部分和边缘部分，提高耐热冲击和抗疲劳性能。 构成：用于直接喷射的活塞体1柴油内燃机由金属模铸铝合金制成，活塞头的热点部分2通过局部浓缩高密度能量如电子束，激光 ，等离子体和TIG弧，并且允许所述点部分以高速重熔。 并且，在环境温度升高之前，重熔部分被淬火并且通过阻止加热使其质地细小。
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公开(公告)号：JPH04314853A
公开(公告)日：1992-11-06
申请号：JP41049790
申请日：1990-12-12
Applicant: TOYOTA MOTOR CORP
Inventor： AOYAMA SATOSHI , NAKAGAWA MASAHIRO , KOYAMA HARATSUGU , MIYAMOTO NORITAKA
Abstract: PURPOSE:To increase the adhesion of a titanium nitride film to a base metal. CONSTITUTION:In the initial stage of ion mixing treatment in which both of ion charging and titanium vapor deposition are executed, treatment is performed in an atmosphere in which the amt. of nitrogen ions (atomic N and molecular N2 ) is regulated to a one equal to that of titanium or above and the reaching ratio of (the amt. of inert gas ions to be charged including the total amt. of nitrogen ions to be charged/the amt. of titanium to be charged) is regulated to 1.1 to 2.5. In the main film forming stage performed after that, a titanium nitride film is formed in such a manner that the reaching ratio N/Ti of (the amt. of nitrogen ions to be charged/the amt. of titanium to be charged) is substantially regulated to 1.
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Patent Agency Ranking
公开(公告)号：JPH04175577A
公开(公告)日：1992-06-23
申请号：JP30133090
申请日：1990-11-07
Applicant: TOYOTA MOTOR CORP
Inventor： UENO KENJI , FUWA YOSHIO , NAKAGAWA MASAHIRO , KOYAMA HARATSUGU , SHIMODA KENJI
Abstract: PURPOSE:To enhance the resistance against seizure, corrosion, and wear by using the No.1 member sliding surface with No.2 member as the surface for metallization with a specific composition powder of Fe-Cr alloy, and using the No.2 member sliding surface with No.1 member as the surface for nitriding process to have a specific thickness applied to a mother material for cast iron. CONSTITUTION:No.1 and No.2 member are used in combination which slide with each other in mutual contacting. wherein the No.1 member sliding surface with No.2 member is used as the surface for metallization with Fe-Cr alloy powder in the composition of 55-70wt.% Cr, 1.8-8.4wt.% C, and Fe as remainder substantially, while the No.2 member sliding surface with No.1 member used as the surface for nitriding process of 70-150mum thick applied to a mother material for cast iron. This enhances anti-seizure property when substitute fuel for gasoline such as alcohol is used, and also the anti-corrosiveness and anti- abrasiveness can be improved to a great extent compared with a conventional sliding material. This can be favorably used to sliding components of an internal combustion engine such as piston ring 4 or cylinder bore 3.
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公开(公告)号：JPH03226546A
公开(公告)日：1991-10-07
申请号：JP1984190
申请日：1990-01-30
Applicant: TOYOTA MOTOR CORP
Inventor： KOYAMA HARATSUGU , NAKAGAWA MASAHIRO
Abstract: PURPOSE:To manufacture an engine intake valve excellent in toughness and wear resistance by cladding the face surface of an intake valve in an internal combustion engine with high carbon Cr-Mo series alloy iron having a specified compsn. by welding. CONSTITUTION:At the time of manufacturing an engine intake valve clad by welding in an internal combustion engine, a clad by welding part constituted of, by weight, 1.1 to 1.9% C, 25 to 33% Cr, 3 to 8% Mo,
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公开(公告)号：JPH03219065A
公开(公告)日：1991-09-26
申请号：JP1263890
申请日：1990-01-24
Applicant: TOYOTA MOTOR CORP
Inventor： KOYAMA HARATSUGU , NAKAGAWA MASAHIRO , YOSHIDA MAKOTO , MORIKAWA TAKASHI , SHAMOTO HIROYUKI
Abstract: PURPOSE:To improve oxidation resistance and wear resistance and to lighten the weight by providing an Al pack cementation layer in which thickness, hardness, and Al concentration are specified, respectively, at least to the surface of the head of an engine valve composed of Ti-Al alloy. CONSTITUTION:An Al pack cementation layer is provided at least to the surface of the shade of an engine valve composed of Ti-Al alloy. The thickness, hardness Hv, and Al concentration of the Al pack cementation layer are regulated to 10-100mum, 300-450, and 42-53wt.%, respectively. The above Al pack cementation is carried out, e.g. by filling a semi-airtight vessel with a base material together with a diffusion agent which is a mixture of Al powder, alumina powder, and NH4Cl powder and then performing heating.
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公开(公告)号：JPH02286821A
公开(公告)日：1990-11-27
申请号：JP11033189
申请日：1989-04-28
Applicant: TOYOTA MOTOR CORP , TOYOTA CENTRAL RES & DEV
Inventor： YOSHIDA MAKOTO , NAKAGAWA MASAHIRO , KOYAMA HARATSUGU , NISHINO KAZUAKI , TAKAMIYA HIROYUKI
Abstract: PURPOSE:To manufacture aux. combustion chamber simply, easily, and uncostly by forming a blocking part which encloses at least part of one end or both of a hole, at the time of precision casting in such a way as consolidated with a coarse work for chamber. CONSTITUTION:A coarse work 1 for chamber made of austenite type heat- resistant steel having eaves-shaped blocking parts 4 at the ends of a hole 3A is prepared through precision casting. Therein casting material 5 within the hole 3A remains approx. perfectly even after sand shakeoff process. Then the portions 6A, 6B as acute angle part of the jet are subjected to re-melting process by means of TIG arc. The remaining blocking parts 4 are removed in the finish process. Thus existence of the casting material 5 within the hole 3A allows formation of a layer turned into alloy while the shape of the hole 3A is kept as it was even under the condition that high-density energy 7 is impressed at the time of re-melting process. This enables manufacturing coarse works 1 for chamber simply. easily, and uncostly.
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公开(公告)号：JPH02101177A
公开(公告)日：1990-04-12
申请号：JP25161688
申请日：1988-10-05
Applicant: TOYOTA MOTOR CORP
Inventor： KOYAMA HARATSUGU , NAKAGAWA MASAHIRO , KANAZAWA TAKAAKI
Abstract: PURPOSE:To uniformly disperse hard particles, to finely crystallize hard CrAl7 in the Al matrix, and to improve the wear resistance at the part by arranging the Cr-coated hard particles at the requisite part of an Al alloy member, and impressing high-density energy on the surface. CONSTITUTION:The fine particles of the hard metal carbide, metal nitride, and metal boride such as WC, TiC, NbC, TiN, CrN, TiB, CrB, and TaB coated with Cr are placed on the part of an Al alloy member requiring especially wear resistance, and the high-density energy such as a laser beam and a TIG arc is impressed. The hard fine particles are uniformly dispersed at 5-30% area ratio to the cross section of the Al alloy member, a hard intermetallic compd. CrAl7 is finely dispersed and crystallized at the Al matrix part other than the hard fine particles at a 5-50% area ratio in the structure, and the wear resistance is remarkably improved.
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