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41. 发明专利

JPS5744484A Method for extinguishing in automatic gas pressure welding 失效
标题翻译：自动气体压力焊接灭火方法
公开(公告)号：JPS5744484A
公开(公告)日：1982-03-12
申请号：JP11842980
申请日：1980-08-29
申请人： Nippon Steel Corp
发明人： TACHIKAWA HIROSHI , ISHIKAWA YASUSHI , SAITOU KESAO
IPC分类号： B23K20/00
摘要： PURPOSE: To obtain a good joined part having no defects by a simple method and eliminate the occurrence of a backfire by expediting the timing for retreat of a burner and decreasing the flow rate of a combustible gas upon stopping of oxygen supply.
CONSTITUTION: When a joined part 3 is heated up to a required pressure welding temp., an oil hydraulic pump is driven to start upsetting of materials 1, 2 to be joined. When the rate of upset attains about 1/2W2/3 of a set value, a burner 8 is retreated from the joined part 3. The rate of upset is measured as a rate of compression of the part 3, for example, by a sensor 13 detecting the displacement of a sliding block 10. The retreating of the burner 8 is accomplished as it is moved up to the dotted line position by the signal from the sensor 13. At the point of the time with slight delay from the start of this retreat, the supply of oxygen to the burner 8 is stopped and the flow rate of gaseous acetylene is throttled, whereby the flame of the gas is extinguished.
COPYRIGHT: (C)1982,JPO&Japio
摘要翻译：目的：通过简单的方法获得没有缺陷的良好接合部分，通过加快燃烧器后退的时间并减少停止供氧时的可燃气体的流量，消除反火的发生。构成：当接合部件3被加热到所需的压力焊接温度时，驱动油压泵来启动要接合的材料1,2的镦锻。当镦粗率达到设定值的约1 / 2-2 / 3时，燃烧器8从接合部分3退避。镦粗率被测量为部件3的压缩率，例如通过传感器13检测滑动块10的位移。当通过来自传感器13的信号向上移动到虚线位置时，完成燃烧器8的后退。在从起始处稍微延迟的时间点在这种撤退中，停止向燃烧器8供应氧气，并且气态乙炔的流量被节流，从而熄灭气体的火焰。

42. 发明专利

JPS5743109A Ignition method in automatic gas pressure welding 失效
标题翻译：自动气体压力焊接点火方法
公开(公告)号：JPS5743109A
公开(公告)日：1982-03-11
申请号：JP11843080
申请日：1980-08-29
申请人： Nippon Steel Corp
发明人： TACHIKAWA HIROSHI , ISHIKAWA YASUSHI , SAITOU KESAO
IPC分类号： F23K5/00 , F23D14/58 , F23N1/00
摘要： PURPOSE: To obtain a simple method of igniting a gas wherein the ignition can be done safely without creating a large ignition sound, by first igniting acetylene gas while a small amount of acetylene is let flow, and then by jetting standard flow rates of acetylene and oxygene.
CONSTITUTION: In a pressure welding step, after the pre-pressurization has been completed, a small amount of acetylene gas is let flow from a burner 8. In this time the flow rate of the acetylene gas is about 1/3W4/5 of the standard flow rate from the point of view of the stability of the gas flame and the safety. Then the acetylene gas is ignited, but oxygene is not supplied to the burner 8, and the acetylene gas is burnt with oxygene in the atmosphere. When the ignition has been confirmed, the standard flow rates of oxygene and acetylene are jetted from the burner to heat, for a prescribed period, sections 3 to be joined.
COPYRIGHT: (C)1982,JPO&Japio
摘要翻译：目的：为了获得一种点燃气体的简单方法，其中可以安全地点火，而不产生大的点火声，首先点燃乙炔气，同时少量的乙炔流过，然后通过喷射乙炔的标准流速，氧基。构成：在压力焊接工序中，预压完成后，少量的乙炔气体从燃烧器8流出。此时，乙炔气体的流量为约1 / 3-4 / 5 从气体火焰的稳定性和安全性的角度来看标准流量。然后点燃乙炔气，但不向燃烧器8供应氧气，并且在大气中用氧气燃烧乙炔气体。当确认点火时，从燃烧器喷射氧气和乙炔的标准流量，在规定时间内加热要连接的部分3。

43. 发明专利

JPS5641086A METHOD AND DEVICE FOR HEAT PRESSSWELDING CONTROL 失效
公开(公告)号：JPS5641086A
公开(公告)日：1981-04-17
申请号：JP11640779
申请日：1979-09-11
申请人： NIPPON STEEL CORP
发明人： HAGIWARA TOMOO , SAITOU KESAO , ISHIKAWA YASUSHI , TACHIKAWA HIROSHI
IPC分类号： B23K20/00
摘要： PURPOSE:To obtain the press-welded joint stably excellent in quality even at narrow place while being moved outdoor, by making suitable the heating state of steel with a simple means and making suitable the final pressing time, in controlling the heating and press-welding of steel in scheduled order. CONSTITUTION:The surface molten state of steel joint part is seen darker for the molten part than other parts, and since the size of steel material is known, the area can visually observed with ease and the accuracy is sufficient because the tolerance of heating time is around + or -5sec. Further, during the operation of the 1st prediction device 9, if the surface melting starts, the set value of the heating time is suitable and can be remained at it is. When this melting is not started, after the 2nd prediction device 11 is operated, the heating time is extended at the depression of the push button PB during the depression of it. Further, when the molten area shows the suitable value, the final pressing is given by detaching the button and the press- welding is finished. Further, at the operation of the device 9, if the melting is already started, the button PB is immediately depressed and the same operation is made.

44. 发明专利

JPS55133892A AUTOMATIC CONTROL METHOD OF HEATING PRESSUREEWELDING 失效
公开(公告)号：JPS55133892A
公开(公告)日：1980-10-18
申请号：JP4185179
申请日：1979-04-06
申请人： NIPPON STEEL CORP
发明人： HAGIWARA TOMOO , ISHIKAWA YASUSHI , TACHIKAWA HIROSHI , HAMANO KIYOSHI
IPC分类号： B23K20/00
摘要： PURPOSE:To improve the quality of pressure-welded joint by detecting the change in the radiation energy amount in the heating part near the steel material faying part and deciding the period when the final pressure is to be added. CONSTITUTION:A radiation energy measuring device 13 is angle-adjustably mounted to the pressure-welding machine body 3 and the width of the melt zone on the heated steel pipe 1 surface near the faying part 2 is detected by a radiation energy measuring control unit 19. This operation is accomplished by oscillating the photo detecting optical axis of the measuring device 13 or electrically sweeping its photo detecting part so that the visual field theta of the measuring device 13 assumes the suitable width S including the faying part 2. When this detected value and reference value coincide, the command for applying the final pressure is generated. This command is sent to a hydraulic unit 15 via sequence control unit 22, whereby the pressure-welding is accomplished automatically. The shape, strength, etc. of the joint part are improved by this method.

45. 发明专利

JPS55133890A AUTOMATIC GAS PRESSUREEWELDING METHOD OF STEEL PIPE 失效
公开(公告)号：JPS55133890A
公开(公告)日：1980-10-18
申请号：JP4184979
申请日：1979-04-06
申请人： NIPPON STEEL CORP
发明人： TACHIKAWA HIROSHI , HAGIWARA TOMOO , ISHIKAWA YASUSHI , HAMANO KIYOSHI
IPC分类号： B23K20/00
摘要： PURPOSE:To eliminate the flying and dropping of molten metal and improve the joint performance and its appearance shape by heating the ends of steel pipes by an oxyacetylene flame to upset the same then retreating the burner and putting it out. CONSTITUTION:The faying ends of steel pipes 1, 1' are heated by an oxy-acetylene flame whereby they are upset. When the set value of the upset is detected, the burner is retreated from the pressure-weld part 3, after which the burner is put out. According to this method, the solidification of the molten metal becomes irrespective of the putting out of the burner and the flying and dropping phenomena of the molten metal no longer occur. Hence, the smooth annular convex part 2e is evenly formed on the outside surface of the pressure-weld zone 3 and the mechanical strength of the joint increases.

46. 发明专利

JPS55109576A AUTOMATIC NARROW GAP WELDING METHOD 失效
公开(公告)号：JPS55109576A
公开(公告)日：1980-08-23
申请号：JP1607679
申请日：1979-02-16
申请人： NIPPON STEEL CORP
发明人： TACHIKAWA HIROSHI , ISHIKAWA YASUSHI , HAGIWARA TOMOO , KATAOKA RIYUUICHI , IMAI KANETAKA
IPC分类号： B23K9/12 , B23K9/095
摘要： PURPOSE:To prevent lack of fusion and slag inclusion and perform the captioned welding by maintaning welding torch at a constant height from the welding work surface and controlling welding speed according to welding current and oscillation amplitude and oscillation times according to welding speeds. CONSTITUTION:A wire 7 is plastically deformed to arc form by a bending habit giving mechanism 16 and turns around a rotating wheel 18 in a wire oscillating plate 17, after which it is sent to a welding torch 12. The torch 12 is constantly maintained in the constant height position from the welding work surface by the signal from a face tracing mechanism. AS groove width fluctuates, bead height fluctuates and the welding current increases or decreases. Hence, with the welding current corresponding to a reference wire protruding length as reference welding current, the welding speed is so controlled that the acutal welding current becomes a reference value. According to the deviation between the actual welding speed and reference welding speed, the oscillating amplitude and oscillation times of the oscillating plate 17 are controlled during welding, whereby the lack of fusion and slag inclusion are prevented.

47. 发明专利

JPS5536104A AUTOMATIC NARROW GAP WELDING METHOD 失效
公开(公告)号：JPS5536104A
公开(公告)日：1980-03-13
申请号：JP10566578
申请日：1978-08-31
申请人： NIPPON STEEL CORP
发明人： ISHIKAWA YASUSHI , TACHIKAWA HIROSHI , HAGIWARA TOMOO , KATAOKA RIYUUICHI , IMAI KANETAKA
IPC分类号： B23K9/12 , B23K9/095 , B60R13/06
摘要： PURPOSE:To prevent welding defects by keeping welding torches at a fixed height from the surface of welding mother materials and automatically controlling the wire swing amplitude and speed in accordance with the variation of welding current. CONSTITUTION:The motor 26 is driven in accordance with the signals from the surface copying machine 25 to detect the concaves and convexes of the mother material surface 3, the welding head 11 is raised, and the welding torch 12 which is always mounted on the welding head 11 during welding is kept at a fixed height from the mother material surface 3. On the other hand, current is applied to the welding wire 8 at a constant speed using DC power supplies and welding current increases and decreases depending on the convexes and concaves of the welding beat 5. By detecting the increase and decrease of this welding current, the wire swing amplitude and speed are adjusted.

48. 发明专利

JPS54151533A ARC WELDING 失效
公开(公告)号：JPS54151533A
公开(公告)日：1979-11-28
申请号：JP6078178
申请日：1978-05-22
申请人： NIPPON STEEL CORP
发明人： ISHIKAWA YASUSHI , NAKAMURA TAIZOU
IPC分类号： B23K9/12
摘要： PURPOSE:For stabilized arc welding, weld wire feed response rate to arc length variation is specified so that welding voltage is kept constant. CONSTITUTION:To control wire feed speed so as to keep welding voltage constant by sue of voltage detection, wire speed control for stable welding requires 2mm correction response of 0 to 2mm or 8 to 10mm within 100 msec, that is, 20 mm/sec or greater response is necessary. When the voltage detector 7 finds welding voltage lower than the setting voltage 9, the amplifier 14 output actuates transistor 16 to cause the control source 18 to feed control current in the arrow direction B. This quickly reduces the motor 6 speed, and concequently wire feed speed, so that arc length or welding voltage becomes equal to the setting voltage.

49. 发明专利

JPS54106046A REPAIRING METHOD FOR START AND END TIP PART OF WELD BEAD 失效
公开(公告)号：JPS54106046A
公开(公告)日：1979-08-20
申请号：JP1198978
申请日：1978-02-07
申请人： NIPPON STEEL CORP
发明人： ISHIKAWA YASUSHI , KAMATA MASAHARU , HAGIWARA TOMOO , SAITOU KESAO , TACHIKAWA HIROSHI
IPC分类号： B23K31/00 , B23K31/10
摘要： PURPOSE:To repair the start and end tip part of weld bead good in a short time, by fusing and smoothing the start tip part of root pass bead by nonconsumable type electrode arc and forming Uranami bead and then, conditioning the bead on and after the second layer in the same way. CONSTITUTION:The electrode 10 is started in a low arc electric current and low moving velocity from the front point 11 of the start tip part 6 of root pass bead and repairing part is preheated. Next, the electrode is moved in a high arc current and high moving velocity and the Uranami bead 12 is formed fusing the groove root part and then, flat bead is formed pouring molten metal of the part 6 in produced concave part. Then, moving velocity of the electrode 10 is decreased in the same arc current and the Uranami bead 13 is formed by penetrating the root pass bead 4 and fusing the rool part and the form of the bead 4 is conditioned. Molten pool is kept small by decreasing the arc current and slowing down the moving velocity moreover and the unevenness 15 of boundary between the bead and unrepaired part by flattening the repair band 14. Bead end is processed in the same way. Welding defect is removed by carrying out bead conditioning on and after the second layer in the same way.

50. 发明专利

JPH08215582A HIGH-DURABILITY METALLIC CARRIER FOR PURIFYING EXHAUST GAS 失效
公开(公告)号：JPH08215582A
公开(公告)日：1996-08-27
申请号：JP2323295
申请日：1995-02-10
申请人： NIPPON STEEL CORP
发明人： OTA HITOSHI , KIMURA HARUO , ISHIKAWA YASUSHI
IPC分类号： F01N3/28 , B01J35/04
摘要： PURPOSE: To provide a high-durability metallic carrier for purifying exhaust gases which has sufficient strength to the compressive stress of flat foil and does not generate flaws by producing a honeycomb body from a blank varying in foil strength or foil thickness by applying ordinary production stages. CONSTITUTION: This high-durability metallic carrier for purifying exhaust gases is composed by inserting the honeycomb body formed by alternately winding and laminating the metallic flat foil and the metallic corrugated foil, into a metallic outside cylinder and suitably jointing both. The honeycomb body is so composed that the high-temp. tensile strength σ1 of the flat foil and the high-temp. tensile strength σ2 of the corrugated foil constituting the honeycomb body attain σ1>σ2. The metallic carrier is so formed that the thickness t1 and high-temp. tensile strength σ1 constituting the flat foil and the thickness t2 and high-tensile strength σ2 of the corrugated foil constituting the honeycomb body attain the relation expressed by equation 1

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