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81. 发明专利

JPS6216879A PIPING WELDING EQUIPMENT 失效
公开(公告)号：JPS6216879A
公开(公告)日：1987-01-26
申请号：JP15395185
申请日：1985-07-15
申请人： HITACHI LTD
发明人： HANEDA MITSUAKI , IMANAGA AKIYOSHI , KANAMARU MASATOSHI , YAMADE TAKESHI , ANDO BUNZO
IPC分类号： B23K9/028 , B23K9/02 , B23K9/12 , B23K9/127 , B23K10/00 , B23K37/02
摘要： PURPOSE:To enable to start a welding automatically even at whatever angle a welding head is fitted for the piping by making the positional relation of the welding head main body at attaching and detaching time and a welding torch constant and by inputting to a control device the inclination of the welding head main body at its fitting time to a pipe. CONSTITUTION:The rotary gear wheel 6 having an opening part 4 and placing a welding torch 5 on board is provided to the main body 3 of a welding head having an opening part 2 as well and in the state of the opening parts 2, 4 being coincided the attaching and detaching to a pipe 1 is performed by a chuck mechanism 12. The main body 3 and rotary gear wheel 6 are rotated around the pipe 1 by the engagement of either one part of the rotary gear wheel 6 and gears 7, 8. Since the inclination of the welding head main body 3 is detected by an angle detector 15 and inputted into a conditions control device 16 even if the position of the openings 2, 4 be fitted by inserting it from whatever angle for the pipe 1 the welding torch 5 moves with the prescribed motion automatically and can return to the state of its fitting time even after completion of the welding progress.

82. 发明专利

JPS591064A Uranami welding of fixed tube 失效
标题翻译：固定管的乌拉姆焊接
公开(公告)号：JPS591064A
公开(公告)日：1984-01-06
申请号：JP10842882
申请日：1982-06-25
申请人： Hitachi Ltd
发明人： HANEDA MITSUAKI , IMANAGA AKIYOSHI , MATSUMOTO TERUO , KANAMARU MASATOSHI
IPC分类号： B23K9/02 , B23K9/035 , B23K31/02
CPC分类号： B23K31/027
摘要： PURPOSE:To perform all position plasma welding of fixed tubes at high accuracy, by attaching a ring having sectional area larger than the thickness of fixed tubes and a step for alignment to fixed tubes so that the step protrudes from fixed tubes, and then welding them. CONSTITUTION:A ring 9C is attached to the end of fixed tubes 8A, 8B to be welded provided to arrest rotation. The ring 9C has radial sectional area larger than the thickness D of fixed tubes 8A, 8B, and steps 10A, 10B for centering are provided on the outer periphery and inner periphery respectively. The steps 10A, 10B are made to protrude from inner wall and outer wall of fixed tubes 8A, 8B. By performing plasma keyhole welding under this condition, depression of uranami of welding bead and undercut can be prevented. Dripping of molten metal can be prevented by changing welding current intermittently and alternately to high and low.
摘要翻译：目的：通过安装具有大于固定管厚度的截面积的环和固定管对准的步骤，使固定管从固定管突出，然后焊接它们，以高精度执行固定管的所有位置等离子体焊接。构成：将环9C连接到要被焊接的固定管8A，8B的端部以阻止旋转。环9C具有大于固定管8A，8B的厚度D的径向截面面积，并且用于定心的步骤10A，10B分别设置在外周和内周。使步骤10A，10B从固定管8A，8B的内壁和外壁突出。通过在这种条件下进行等离子体键孔焊接，可以防止焊珠的凹陷和底切的凹陷。可以通过间歇地交替地将焊接电流改变为高低而来防止熔融金属的滴落。

83. 发明专利

JPS57164921A SURFACE HARDENING METHOD FOR STEAM TURBINE BLADE 失效
公开(公告)号：JPS57164921A
公开(公告)日：1982-10-09
申请号：JP4718281
申请日：1981-04-01
申请人： HITACHI LTD
发明人： NAKAE HIDEO , MUROI KATSUMI , HANEDA MITSUAKI , KANAMARU MASATOSHI , TAN TOSHIMI
IPC分类号： F01D5/28 , C21D9/00
摘要： PURPOSE:To form surface hardened layers of high erosion resistance by irradiating plasma jet flames using an inert gas added with nitrogen as a working gas to steam turbine blades consisting of 12% Cr alloy steel. CONSTITUTION:Plasma jet flames 5 are irradiated by using a plasma touch 6 to steam turbine blades made of 12% Cr alloy steel. An inert gas such as Argon added with 30% gaseous nitrogen is used as a working gas and an 100% gaseous nitrogen is used as a shielding gas 4. Plasma arcs are generated by flowing electric current between a nozzle 2 and a tungsten electrodes 1 and plasma jet flames 5 are irradiated to heat the blades 7 without melting the same, whereby the hardened layers of high erosion resistance are formed on the surfaces of the blades 7 in a short time.

84. 发明专利

JPS57137461A SURFACE HARDENING METHOD FOR STAINLESS STEEL 失效
公开(公告)号：JPS57137461A
公开(公告)日：1982-08-25
申请号：JP2156781
申请日：1981-02-18
申请人： HITACHI LTD
发明人： MUROI KATSUMI , NAKAE HIDEO , HANEDA MITSUAKI
IPC分类号： C23C8/36 , C23C8/38
摘要： PURPOSE:To perform local surface hardening of superior surface roughness in a short time by mixing N2 with a working gas, generating a plasma jet arc by the use of a plasma torch and irradiating this to stainless steel. CONSTITUTION:In order to prevent the melting of the surface of a stainless steel blank material 3, the material 3 is sandwiched from both sides with jigs 2 incorporating water-cooled pipes 1 therein, and the respective top surfaces are made flush. Thence, a gaseous mixture of about 30% N2 and about 70% Ar is flowed as a working gas 4, at about 3l/min flow rate, and about 70A electric current is conducted between a nozzle 5 and an electrode 6, whereby a plasma jet flame 7 is generated. This flame 7 is irradiated to the surface of the material 3 for about 2min to nitride the material, whereby the hardened surface of about 1,000Hm hardness and about 0.5mm. depth is obtained. It is effective for hardening reaction to flow N2 or a gaseous mixture of N2 and an inert gas as a shielding gas on the outside circumference of the plasma jet during the flame irradiation.

85. 发明专利

JPS5768269A Plasma cutting torch 失效
标题翻译：等离子切割机
公开(公告)号：JPS5768269A
公开(公告)日：1982-04-26
申请号：JP14433680
申请日：1980-10-17
申请人： Hitachi Ltd , Hitachi Seiko Ltd
发明人： IMANAGA AKIYOSHI , TAGUCHI HIRONARI , HANEDA MITSUAKI , YAMAMOTO KOUTAROU , SHIMADA MINORU , OZAKI KIYOUICHI
IPC分类号： H05H1/34 , B23K9/00 , B23K9/26 , B23K10/00
摘要： PURPOSE: To make a titled torch small in size, light in weight and easy to handle by disposing a nozzle cap via an insulator on the outside circumferential part of a nozzle, and ejecting mixed fluids of water or steam from cooling water outflow passages directed toward the plasma arc.
CONSTITUTION: A material 18 to be cut is cut at a cutting end 18a by the plasma arc 19 generated in the atmosphere of a working gas 14 supplied into a nozzle 4. At this time, the cooling water 9 supplied to a cooling water flow passage 8a through a water flow pipe 10 is released to the circumference of a nozzle hole 5 via cooling water outflow passages 8b, 8c. When the cooling water flows through the passages 8b, 8c, it is atomized and evaporated by the ultrahigh temp. gaseous flow of the gas 14 and the arc 19, so that the mixed fluids of the water, mists and steam act so as to enclose the circumference of the arc 19. The energy density of the arc 19 is improved by thermal pinch effect, and the cut surfaces are made in high quality.
COPYRIGHT: (C)1982,JPO&Japio
摘要翻译：目的：通过在喷嘴的外圆周部分上通过绝缘体设置喷嘴帽，使得尺寸小，重量轻，易于处理的标题割炬，并将冷却水流出通道的水或蒸汽的混合流体排出，等离子弧。构成：通过在供给到喷嘴4的工作气体14的气氛中产生的等离子体电弧19在切断端18a切断要切断的材料18.此时，供给冷却水流路的冷却水9 8a通过水流管10经由冷却水流出通道8b，8c被释放到喷嘴孔5的周边。当冷却水流过通道8b，8c时，其被超高温雾化并蒸发。气体14和弧19的气流，使得水，雾和蒸汽的混合流体作用以包围弧19的周长。弧19的能量密度通过热夹紧效应而提高，并且切割表面是高品质的。

86. 发明专利

JPS56150183A METHOD FOR HARDENING TI AND TI ALLOY 失效
公开(公告)号：JPS56150183A
公开(公告)日：1981-11-20
申请号：JP5039680
申请日：1980-04-18
申请人： HITACHI LTD
发明人： YAMADA TOSHIHIRO , TAKAHASHI NUSHITO , HATANO KAZUYOSHI , HIOKI SUSUMU , NAKAE HIDEO , HANEDA MITSUAKI , HOSOYA KENSHIYOU
IPC分类号： C23C8/24 , C23C8/36
摘要： PURPOSE:To impart excellent antiwear property to Ti or a Ti alloy by a method wherein Ti or the Ti alloy is heated in a mixed gas atmosphere comprising an inert gas and a nitrogen containing gas and cooled after being held in a molten condition for a predetermined time. CONSTITUTION:Ti or the Ti alloy heated and melted in a mixed gas atmosphere comprising an inert gas such argon or helium and nitrogen or an ammonia gas for a predetermined time by a heat source such as arc heat, electron beam, laser or high frequency to infiltrate and diffuse atomic nitrogen into the molten metal. Subsequently, upon cooling, a hardened layer with excellent antiwear property is formed.

87. 发明专利

JPS5636375A PLASMA CUTTING TORCH 失效
公开(公告)号：JPS5636375A
公开(公告)日：1981-04-09
申请号：JP11040279
申请日：1979-08-31
申请人： HITACHI LTD
发明人： TAGUCHI HIRONARI , FURUSAWA KOUICHIROU , HANEDA MITSUAKI
IPC分类号： B23K10/00 , B23K9/00
摘要： PURPOSE:To evaporate part of water and enhance cooling efficiency by forming the cooling water path and shielding water path of a torch into one piece and filling porous metal into the water discharge hole around the nozzle hole. CONSTITUTION:A cooling water path 8 is provided within a copper-made nozzle electrode 7 provided in opposition to a tungsten electrode 6, and its water discharge port is opened in the same direction as plasma arm. Further, porous metal such as sintered metal 10 of bronze is filled in the cooling water path 8 around the nozzle hole 9. The cooling water flowing in the cooling water path 8 cools the nozzle electrode 7 and at the time when it passes the sintered metal 10, part thereof is evaporated and is spouted from the water discharge port by becoming the mixed flow of high temperature water and steam. This steam flow is further evaporated by the plasma arc spouted from the nozzle hole 9, and the energy density of the plasma arc is increased by this mixed fluid and the cut end of cutting material is cooled. In addition, the atmospheric air at the cutting part is expelled; therefore the shoulder drooping of the cut portion is eliminated and the cut end of less oxidation is obtainable.

88. 发明专利

JPS5536056A DETECTOR FOR WELD LINE TRACING DEVICE 失效
公开(公告)号：JPS5536056A
公开(公告)日：1980-03-13
申请号：JP10963778
申请日：1978-09-08
申请人： HITACHI LTD
发明人： UDAGAWA TSUGIO , HANEDA MITSUAKI , ARAYA TAKESHI
IPC分类号： B23K9/127 , B23K9/12
摘要： PURPOSE:To control and set easily as you desire by using the non-contact displacement meter for detection of the change of position of edge. CONSTITUTION:The detection bar 8 equipped with contact probe becomes to be possible to float at the spherical bearing 18 and a part of the bar is inserted in the barrel body 20 equipped with installation arm 21. And, it is pressed in the direction of the shaft by the spring 9. Metallic cylinder type detection body 17 is fixed on the bar 8 and inside this body, the non-contact displacement meters 13, 14 crossed at right angles with each other, are installed at the right angle to the core of the bar 8. This detector 25, moving stands 27, 28 and welding torch 26 are installed on the arm 29 installed on the carriage. At first, the contact probe 3 is inseted in the edge of the weld zone and the control circuit 23 is adjusted. In case the gap of the position is occurred in accordance with the movement of arm 29 due to the transformation of the weld material 2, signal is transmitted from the circuit 23 by the change of the gap between the displacement meters 13, 14 and the detector 17 through the contact probe 3. To set the deviation of the setting value and this to zero, driving correction in horizontal direction 27 of the moving stand is made through the driving circuit 24, and detection and correction are corrected repeatedly. Hight direction can simultaneously be detected.

89. 发明专利

JPS5465107A HARDENING METHOD BY MEANS OF PLASMA ARC 失效
公开(公告)号：JPS5465107A
公开(公告)日：1979-05-25
申请号：JP13070477
申请日：1977-11-02
申请人： HITACHI LTD
发明人： HANEDA MITSUAKI , SASAKI TOSHIMI , TAGUCHI HIRONARI , IMANAGA AKIYOSHI , FURUSAWA KOUICHIROU
IPC分类号： C23C26/00 , C21D1/09 , C23C26/02
摘要： PURPOSE:To harden effectively the required part, by heating locally the material, blowing hydrocarbon gas against it, making the gas react with it and, in this way, making C penetrate into it. CONSTITUTION:The materail 8 is heated locally by means of the plasma torch 1. The torch 1 is constituted of the passage 2 for working gas, the passage 5 for reaction gas, the passage 7 for shielding gas and the W electrode 3. By making Ar flow through the passages 2 and 7, the plasma arc 9 is generated in the space between the torch 1 and the material 8. Owing to the generation of the arc 9, the molten pool 10 is formed at the material 8. At the same time, a hydrocarbon gas (methane gas) is released toward the molten pool 10 through the passage 2. As the result, the metal in the molten pool 10 and the gas react, so that the hardening is promoted.

90. 发明专利

JPS53114751A ARC WELDING METHOD 失效
公开(公告)号：JPS53114751A
公开(公告)日：1978-10-06
申请号：JP1818677
申请日：1977-02-23
申请人： HITACHI LTD , HITACHI SEIKO KK
发明人： HANEDA MITSUAKI , TAGUCHI HIRONARI , IMANAGA AKIYOSHI , FURUSAWA KOUICHIROU
IPC分类号： B23K10/02 , B23K9/00
摘要： PURPOSE:To enable to carry out continuous welding and to improve the efficiency of welding operation, by using the plasma torch on and after the second layer by the same torch to the first layer and sending and welding electrically charged wire at the circular joint welding.

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