WO2011089724A1 - 圧力感応装置 - Google Patents
圧力感応装置 Download PDFInfo
- Publication number
- WO2011089724A1 WO2011089724A1 PCT/JP2010/050884 JP2010050884W WO2011089724A1 WO 2011089724 A1 WO2011089724 A1 WO 2011089724A1 JP 2010050884 W JP2010050884 W JP 2010050884W WO 2011089724 A1 WO2011089724 A1 WO 2011089724A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- joint
- cap member
- layer
- pressure
- welding
- Prior art date
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Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
- G01L19/00—Details of, or accessories for, apparatus for measuring steady or quasi-steady pressure of a fluent medium insofar as such details or accessories are not special to particular types of pressure gauges
- G01L19/0007—Fluidic connecting means
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K35/00—Rods, electrodes, materials, or media, for use in soldering, welding, or cutting
- B23K35/001—Interlayers, transition pieces for metallurgical bonding of workpieces
- B23K35/004—Interlayers, transition pieces for metallurgical bonding of workpieces at least one of the workpieces being of a metal of the iron group
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K35/00—Rods, electrodes, materials, or media, for use in soldering, welding, or cutting
- B23K35/001—Interlayers, transition pieces for metallurgical bonding of workpieces
- B23K35/007—Interlayers, transition pieces for metallurgical bonding of workpieces at least one of the workpieces being of copper or another noble metal
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H35/00—Switches operated by change of a physical condition
- H01H35/24—Switches operated by change of fluid pressure, by fluid pressure waves, or by change of fluid flow
- H01H35/26—Details
Definitions
- the present invention introduces fluid from a joint, such as a pressure switch that outputs an on / off signal corresponding to a change in pressure of a fluid such as a refrigerant in a refrigeration cycle, and a pressure sensor that detects a pressure of the fluid and outputs a pressure signal.
- a pressure sensitive device for obtaining information corresponding to the pressure of the fluid.
- FIG. 1 Conventionally, as a pressure sensitive device, for example, there is a pressure switch shown in FIG.
- This pressure switch has a joint 10 connected to a pipe through which a fluid to be detected flows, a pressure detection unit 20, a switch unit 4, a crimping plate 5, and a case 6 of polyamide resin.
- the pressure detection unit 20 includes a cap member 20a connected to the joint 10, a disk 20b that forms a pressure vessel together with the cap member 20a, and a washer-like stopper 20c that restricts deformation of the disk 20b by a predetermined amount or more. It is configured.
- the switch unit 4 includes a guide 41 having a shaft hole 41 a formed at the center, a shaft 42 fitted into the shaft hole 41 a of the guide 41, and a cylindrical terminal block 43 fitted around the guide 41. is doing.
- the outer peripheries of the cap member 20a, the disk 20b, and the stopper 20c are fixed to the end of the terminal block 43 by caulking plates 5 by caulking.
- a C terminal 44 and an L terminal 45 are fixed to the terminal block 43, and a contact plate 44 a is attached to the C terminal 44.
- a C contact 44b is attached to the contact plate 44a, and an L contact 45a is attached to the L terminal 45.
- the terminal block 43 is accommodated in the case 6.
- the fluid is introduced into the pressure vessel constituted by the cap member 20a and the disc 20b through the introduction path 10a of the joint 10, and the disc 20b is deformed according to the pressure of the fluid, and the shaft 42 is deformed. Press.
- the pressure reaches a preset pressure
- the C contact 44b contacts the L contact 45a in conjunction with the shaft 42, and the switch is turned on. Thereby, it can be detected that the pressure of the fluid has reached the set pressure.
- the joint 10 is made of brass (made of brass)
- the cap member 20a is made of stainless steel (made of SUS)
- the joint 10 and the cap member 20a are joined by brazing.
- a pressure switch in which a joint and a cap member are joined by brazing is disclosed in, for example, Japanese Patent Application Laid-Open No. 2002-55012.
- the joint 10 and the cap member 20a are brazed by burner brazing and in-furnace brazing. For this reason, it is necessary to perform pickling in order to remove flux and burn. Pickling is not preferable from the viewpoint of environmental protection and pollution prevention.
- an in-process part is produced by joining the joint 10 and the cap member 20a by brazing, and thereafter, the in-process part is combined with a disk 20b and a stopper 20c and plasma-welded.
- the pressure detector 20 is manufactured.
- the pressure detection unit 20 is assembled with the switch unit 4.
- the present invention relates to a pressure sensing device such as a pressure switch that introduces a fluid from a joint to a pressure detection unit constituted by a cap member to detect the pressure of the fluid, and securely joins the joint and the cap member to each other. It is an object to improve the corrosion resistance of the steel. It is another object of the present invention to allow retrofitting of joints, simplify the manufacturing process, and reduce intermediate stock such as in-process parts.
- the pressure-sensitive device includes a brass joint connected to a pipe through which a fluid to be pressure-detected flows, and a pressure detector having a stainless cap member into which fluid is introduced from the joint.
- a clad member laminated with a second layer wherein the first layer and the cap member are joined together by welding around a boundary portion between the first layer and the cap member, The joint is joined by welding along the entire circumference of the boundary portion between the second layer and the joint.
- the pressure sensitive device according to claim 2 is the pressure sensitive device according to claim 1, wherein a cylindrical pedestal portion having the same diameter as the clad member is formed on the second layer side of the joint, The welding of the part and the second layer is performed such that after the entire circumference of the boundary part is welded by laser welding, the trajectory of the welding is released to the side of the pedestal part to form an escape mark. It is characterized by that.
- the first layer of the clad member made of stainless material and the cap member made of stainless steel are joined together by welding on the entire circumference of the boundary portion, and the second layer of the oxygen-free copper material of the clad member. And a brass joint are joined by welding around the entire boundary. That is, since the cap member and the joint are joined by welding via the clad member, brazing and pickling steps are not required in the manufacturing process. Further, since the clad member is composed of the first layer of stainless steel and the second layer of oxygen-free copper, the clad member increases the corrosion resistance of the joint portion between the cap member and the joint.
- the pressure detection unit having the cap member can be assembled first, and the joint can be joined later to the cap member.
- An intermediate stock product called a work-in-process part in which the cap member and the cap member are joined is no longer necessary.
- welding of the joint pedestal portion and the second layer of the clad member is performed by laser welding, and the entire circumference of the boundary portion is welded once, and then the welding track is placed on the pedestal portion side. Since the escape mark is formed by escaping, the molten hole formed by laser irradiation when welding all around is joined by the melt, and the welding track is released to the pedestal side. Since the end point of the molten hole does not affect the airtightness or strength in the portion where the escape mark is formed, the pedestal portion and the second layer can be reliably bonded.
- FIG. 1 is a longitudinal sectional view of the pressure switch of the first embodiment
- FIG. 2 is an enlarged view of a main part of the pressure switch
- the left half of FIG. 2 shows a longitudinal section
- the right half shows an external side view
- FIG. 3 is an enlarged view of the main part corresponding to FIG.
- the clad member 3 is interposed between the joint 1 and the cap member 21 of the pressure detector 2.
- the pressure detector 2, the cap member 21, the disk 22 and the stopper 23 have the same structure and function as the pressure detector 20, the cap member 20a, the disk 20b and the stopper 20c in FIG. ) Is welded to the clad member 3 by a laser.
- a connection hole 21 a is formed at the center of the cap member 21.
- the joint 1 is made of brass (made of brass), and is formed with a cylindrical pedestal portion 11 so as to be positioned on the cap member 21 side. Further, the pedestal portion 11 is fitted into the connection hole 21a of the cap member 21. Thus, a thin cylindrical boss portion 12 having a smaller diameter than the pedestal portion 11 is formed. An introduction path 1 a for introducing a fluid into the cap member 21 is formed so as to penetrate the pedestal portion 11 and the boss portion 12.
- the joint 1 is formed with a female screw portion 1b that communicates with the introduction path 1a and is connected to a pipe (not shown).
- the clad member 3 has a washer-like shape with the same diameter as the pedestal 11 of the joint 1, and a hole 3 a that fits into the boss 12 of the joint 1 is formed at the center.
- the clad member 3 is formed by laminating a first layer 31 made of the same stainless steel as the cap member 21 and a second layer 32 made of an oxygen-free copper material. The first layer 31 and the second layer 32 are joined in a state where metal atoms diffuse to each other at the boundary portion.
- the punching hole 3 a of the clad member 3 is fitted into the boss part 12 of the joint 1, and this boss part 12 is fitted into the connection hole 21 a of the cap member 21.
- the clad member 3 is interposed between the cap member 21 and the pedestal portion 11 with the first layer 31 on the cap member 21 side and the second layer 32 on the pedestal portion 11 side.
- the first layer 31 and the cap member 21 are welded by laser over the entire circumference at the boundary portion.
- the second layer 32 and the pedestal portion 11 are welded by laser over the entire circumference at the boundary portion. That is, the cap member 21 and the first layer 31 are welded to each other, and the brass of the pedestal portion 11 and the oxygen-free copper of the second layer 32 are welded.
- the joint 1 is fixed to the cap member 21 via the clad member 3, and the airtightness of the pressure vessel by the joint 1, the cap member 21 and the disc 22 is maintained.
- An example of the manufacturing process of the pressure switch of this embodiment is as follows. First, the cap member 21, the disk 22, and the stopper 23 are assembled, and the surroundings are plasma-welded to form the pressure detection unit 2. The pressure detection unit 2 is applied to the switch unit 4 via the O-ring 91 and is fixed to the end portion (switch unit 4) of the terminal block 43 by the crimping plate 5 by crimping. Then, the joint 1 is welded and fixed to the cap member 21 through the clad member 3 as described above.
- examples of other manufacturing processes are as follows. First, the cap member 21, the disk 22, and the stopper 23 are assembled, and the surroundings are plasma-welded to form the pressure detection unit 2. The joint 1 is welded and fixed to the cap member 21 of the pressure detection unit 2 through the clad member 3 as described above. Thereafter, the pressure detection unit 2 is applied to the switch unit 4 via the O-ring 91 and is fixed to the end portion (switch unit 4) of the terminal block 43 by the crimping plate 5 by crimping.
- FIG. 4 is a schematic view of an apparatus for performing laser welding, and this laser welding is performed by Yb (ytterbium) fiber laser welding.
- the workpiece W which is an assembly such as the joint 1, the clad member 3, and the cap member 21, is held by the rotating jig 10 and rotated in one direction around the axis L of the joint 1 and the clad member 3.
- the processing head 20 that irradiates the laser is reciprocated in a direction parallel to the axis L by the actuator 30. These operations are controlled by the controller 40 and welding is performed. Welding is performed in a shielding gas.
- the welding mark 8 between the second layer 32 and the pedestal part 11 is formed with a relief mark 8a extending from one part to the pedestal part 11 side, and this relief is formed.
- the trace 8a is formed by escape welding as follows.
- welding the second layer 32 and the pedestal portion 11 first, welding is started from the position of point A in the boundary portion between the second layer 32 and the pedestal portion 11.
- the laser beam is scanned in the direction of the arrow P in FIG. 3, and the entire circumference is rotated by 10 ° to 15 °. That is, welding is performed from point A to point B at 370 ° to 375 °.
- the machining head 20 When the point B is reached, the machining head 20 is moved to the joint 1 side in parallel with the axis L while rotating the workpiece W. As a result, the laser beam is scanned as indicated by an arrow Q in FIG. At this time, the laser output is reduced. As a result, a lap portion where welding is overlapped on a portion corresponding to a rotation angle of 10 ° to 15 ° from point A to point B is formed, and an escape mark 8a is formed obliquely from the position of point B.
- the distance D between the welding mark 8 and the escape mark 8a is an escape amount exceeding the weld width, for example, 0.8 mm.
- a molten hole is formed by laser irradiation at the boundary portion between the second layer 32 and the pedestal portion 11, and the melt flows into the molten hole and is fixed after passing through the laser. Then, the fixation due to the melting is continued, and the molten hole is also fixed at the B point by the melt at the portion of the escape mark 8a from the B point. Then, since the output of the racer is set to 0 starting from the final portion of the escape mark 8a, the second layer 32 and the pedestal portion 11 are completely welded.
- the first layer 31 and the cap member 21 are also welded so that a lap portion is formed by rotating them by 370 ° to 375 °.
- the generation of molten holes occurs in the brass portion of the joint 1, and the first layer Since it does not occur in the stainless steel portion 31 and the cap member 21, escape welding is not required when the first layer 31 and the cap member 21 are welded.
- the boiling point of Zn in the brass component is 930 ° C., which is lower than the melting point of Cu, 1083 ° C., so that voids are generated and it is easy to form a molten hole.
- Fiber laser can obtain a laser beam with a small beam diameter, for example, the beam diameter can be about 0.2 mm.
- the clad member 3 is welded deeply and sharply in the radial direction, and can be welded without exceeding the interface between the first layer 31 and the second layer 32 and without increasing the weld width.
- the clad member 3 in which the first layer 31 made of stainless steel and the second layer 32 made of oxygen-free copper material are interposed between the brass joint 1 and the stainless steel cap member 21.
- the first layer 31 and the cap member 21 are joined by welding on the entire circumference of the boundary portion, and the second layer 32 and the joint 1 are joined by welding on the entire circumference of the boundary portion 11 of the joint 1.
- the laminated joint portion between the first layer 31 and the second layer of the clad member 3 has high strength and high corrosion resistance.
- the bending test was performed under the same conditions. No peeling occurred at the laminated joint.
- the pressure switch has been described as an example of the pressure sensitive device.
- the present invention may be applied to a pressure sensor as the pressure sensitive device.
- elements similar to those in FIG. 1 and corresponding elements are denoted by the same reference numerals, and detailed description thereof is omitted.
- the pressure detection unit 2 of the pressure sensor of the second embodiment also includes a cap member 21 fixed to the case 93 by a caulking plate 92, and the cap member 21 is coupled to the cap member 21 by the clad member 3 as in the first embodiment. 1 is joined by laser welding.
- the pressure sensor senses the pressure of the fluid in the cap member 21 by the sensor element 94, and outputs a sensor signal corresponding to the pressure to the outside via the terminal 95 and a lead wire (not shown). Also in the pressure sensor of the second embodiment, the action of the joint 1, the clad member 3, and the cap member 21 by laser welding is the same as that of the first embodiment.
- the joint 1 and the cap member 21 are fixed by fiber laser welding, a pickling process is not required. Further, by setting the output of the laser light small, it is possible to reduce fume adhesion and void generation due to the evaporation of zinc that occurs during the welding of brass, and the finished joint portion is improved. Moreover, since the pressure detection part 2 which has the cap member 21 is assembled
- the joint 1 in the embodiment is a type (flare type) in which a pipe is screwed into a female screw 1b that communicates with the conduction path 1a, but has a hole that communicates with the conduction path 1a, and a male thread portion is formed around the hole. It is also possible to use a type in which the pipe is screwed outward. As described above, even when another type of joint 1 is manufactured, the joint 1 can be retrofitted, so that the pressure detection unit 2 and the switch unit 4 can be adjusted in advance, and the degree of freedom in manufacturing can be increased. Get higher.
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- General Physics & Mathematics (AREA)
- Measuring Fluid Pressure (AREA)
- Manufacture Of Switches (AREA)
Abstract
Description
2 圧力検知部
3 クラッド部材
4 スイッチ部
7 溶接痕
8 溶接痕
8a 逃がし痕
11 台座部
21 キャップ部材
31 第1層
32 第2層
Claims (2)
- 圧力検知対象の流体が流れる配管に接続される黄銅製の継手と、該継手から流体が導入されるステンレス製のキャップ部材を有する圧力検知部とを備えた圧力感応装置であって、
前記キャップ部材と前記継手との間に介在されたワッシャ状のクラッド部材であって、前記キャップ部材側のステンレス材からなる第1層と前記継手側の無酸素銅材からなる第2層とを積層したクラッド部材を備え、
前記第1層と前記キャップ部材とが該第1層と該キャップ部材との境界部分の全周にて溶接により接合され、前記第2層と前記継手とが該第2層と該継手との境界部分の全周にて溶接により接合されていることを特徴とする圧力感応装置。 - 請求項1に記載の圧力感応装置であって、
前記継手の前記第2層側に、前記クラッド部材と同径の円柱状の台座部が形成され、
該台座部と該第2層との溶接が、レーザー溶接により前記境界部分の全周を一周溶接した後、該溶接の軌道を該台座部側に逃がして逃がし痕が形成されるように行われていることを特徴とする圧力感応装置。
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN201080062220.7A CN102713549B (zh) | 2010-01-25 | 2010-01-25 | 压力感应装置 |
PCT/JP2010/050884 WO2011089724A1 (ja) | 2010-01-25 | 2010-01-25 | 圧力感応装置 |
EP10843889.6A EP2530445A4 (en) | 2010-01-25 | 2010-01-25 | PRESSURE SENSOR |
JP2011550778A JP5291806B2 (ja) | 2010-01-25 | 2010-01-25 | 圧力感応装置 |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
PCT/JP2010/050884 WO2011089724A1 (ja) | 2010-01-25 | 2010-01-25 | 圧力感応装置 |
Publications (1)
Publication Number | Publication Date |
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WO2011089724A1 true WO2011089724A1 (ja) | 2011-07-28 |
Family
ID=44306547
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
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PCT/JP2010/050884 WO2011089724A1 (ja) | 2010-01-25 | 2010-01-25 | 圧力感応装置 |
Country Status (4)
Country | Link |
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EP (1) | EP2530445A4 (ja) |
JP (1) | JP5291806B2 (ja) |
CN (1) | CN102713549B (ja) |
WO (1) | WO2011089724A1 (ja) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2014121721A (ja) * | 2012-12-21 | 2014-07-03 | Saginomiya Seisakusho Inc | 冷媒回路構成部品における接合構造、及び冷媒回路構成部品における接合方法 |
Families Citing this family (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
PL2554967T3 (pl) * | 2010-03-30 | 2018-12-31 | Saginomiya Seisakusho, Inc. | Urządzenie czułe na nacisk i sposób łączenia spawaniem urządzenia czułego na nacisk |
CN109385609A (zh) * | 2017-08-08 | 2019-02-26 | 宁波江丰电子材料股份有限公司 | 靶材焊接方法 |
CN109268667B (zh) * | 2018-10-17 | 2019-08-27 | 燕山大学 | 干油润滑流量开关 |
CN113020771B (zh) * | 2021-03-23 | 2022-05-20 | 中国兵器科学研究院宁波分院 | 用于焊接搭接件上圆环形搭接接头的焊接装置及焊接方法 |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
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JPS641726Y2 (ja) * | 1981-07-10 | 1989-01-17 | ||
JP2002055012A (ja) | 2000-08-11 | 2002-02-20 | Saginomiya Seisakusho Inc | 圧力センサ・スイッチおよび圧力センサ・スイッチのかしめ結合方法 |
WO2007004400A1 (ja) * | 2005-06-30 | 2007-01-11 | Saginomiya Seisakusho, Inc. | 圧力センサ及びその製造方法 |
Family Cites Families (3)
Publication number | Priority date | Publication date | Assignee | Title |
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JP2004012140A (ja) * | 2002-06-03 | 2004-01-15 | Saginomiya Seisakusho Inc | 圧力検知器 |
US6843509B2 (en) * | 2002-12-02 | 2005-01-18 | Colmac Coil Manufacturing, Inc. | Coupler for use with metal conduits |
CN2784267Y (zh) * | 2005-01-28 | 2006-05-31 | 赵建明 | 钢轨低阻抗导接线联接装置 |
-
2010
- 2010-01-25 EP EP10843889.6A patent/EP2530445A4/en not_active Withdrawn
- 2010-01-25 CN CN201080062220.7A patent/CN102713549B/zh not_active Expired - Fee Related
- 2010-01-25 JP JP2011550778A patent/JP5291806B2/ja not_active Expired - Fee Related
- 2010-01-25 WO PCT/JP2010/050884 patent/WO2011089724A1/ja active Application Filing
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS641726Y2 (ja) * | 1981-07-10 | 1989-01-17 | ||
JP2002055012A (ja) | 2000-08-11 | 2002-02-20 | Saginomiya Seisakusho Inc | 圧力センサ・スイッチおよび圧力センサ・スイッチのかしめ結合方法 |
WO2007004400A1 (ja) * | 2005-06-30 | 2007-01-11 | Saginomiya Seisakusho, Inc. | 圧力センサ及びその製造方法 |
Non-Patent Citations (1)
Title |
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See also references of EP2530445A4 * |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2014121721A (ja) * | 2012-12-21 | 2014-07-03 | Saginomiya Seisakusho Inc | 冷媒回路構成部品における接合構造、及び冷媒回路構成部品における接合方法 |
Also Published As
Publication number | Publication date |
---|---|
CN102713549A (zh) | 2012-10-03 |
EP2530445A4 (en) | 2014-07-09 |
CN102713549B (zh) | 2014-06-11 |
EP2530445A1 (en) | 2012-12-05 |
JPWO2011089724A1 (ja) | 2013-05-20 |
JP5291806B2 (ja) | 2013-09-18 |
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