CN110529593A - Welding structure and valve gear - Google Patents
Welding structure and valve gear Download PDFInfo
- Publication number
- CN110529593A CN110529593A CN201910314649.3A CN201910314649A CN110529593A CN 110529593 A CN110529593 A CN 110529593A CN 201910314649 A CN201910314649 A CN 201910314649A CN 110529593 A CN110529593 A CN 110529593A
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- mentioned
- interconnecting piece
- melting
- bellows
- face
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16J—PISTONS; CYLINDERS; SEALINGS
- F16J3/00—Diaphragms; Bellows; Bellows pistons
- F16J3/04—Bellows
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K1/00—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K1/00—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces
- F16K1/32—Details
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K31/00—Actuating devices; Operating means; Releasing devices
- F16K31/44—Mechanical actuating means
- F16K31/60—Handles
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K41/00—Spindle sealings
- F16K41/10—Spindle sealings with diaphragm, e.g. shaped as bellows or tube
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Details Of Valves (AREA)
- Butt Welding And Welding Of Specific Article (AREA)
- Diaphragms And Bellows (AREA)
Abstract
The present invention provides welding structure and valve gear, can prevent the weld crack in the mutual weld part of dissimilar metal material, and improve welding durability.The mutual melting and solidification portion (14) of vibrating part (12,13) and formed bellow (11) is mainly made of the different metal materials of austenite phase.Vibrating part (12,13) has the interconnecting piece (15) of overshooting shape, the interconnecting piece (15) has the second face (15b) of the first face (15a) and its opposite side, and formed bellow (11) has the soldered portion (11a) of the plate along the first face (15a) of interconnecting piece (15).Melting and solidification portion (14) is arranged in the front end of interconnecting piece (15) and soldered portion (11a), and is formed to have the section of the diameter more than front end side of interconnecting piece (15) and soldered portion (11a) thickness altogether is round.
Description
Technical field
The present invention relates to the welding structure of the flexible part for being made of relative to object position solder joints light sheet,
And flexible part is fixed on to the valve gear at the object position inside device by the welding structure.
Background technique
In the past, such as in refrigerating air-conditioning, valve (valve gear), pipe-fitting joint, connector etc., metal bellows is utilized
As the seal member (flexible part) that can be stretched.As metal bellows, usually following construction: using alternately welding
Engage multiple made of metal annular plates outer peripheral edge and inner peripheral and constitute welded metal bellow, by punch process (example
Such as, bulging is processed) cylindric metal sheet is configured to the form metal bellows etc. of accordion, in this wavy metal
The axial ends portion of pipe is welded with vibrating part etc. (for example, referring to patent document 1,2).As having used this metal wave
One example of the equipment of line pipe, have the valve gears such as pressure induction control valve, bellows type pressure responsive valves, flow control valve (for example,
Referring to patent document 3~5), each valve gear is configured to, and is carried out by being installed on the metal bellows internal volume inside device
Sealing, and metal bellows stretches according to the displacement of spool etc..
On the other hand, for example, in the valve gear for being used in refrigerating air-conditioning etc., using metallic membrane as pair
The seal member (flexible part) that valve chamber is sealed.The valve gear (diaphragm valve) has: the valve master with valve chamber and valve port
Body；The indoor spool of valve is set in mode free to advance or retreat；And it is arranged throughout valve body and spool and valve chamber is carried out close
The metallic membrane of envelope.Metallic membrane is integrally formed by discoid light sheet, and outer peripheral edge is fixedly welded on valve body.
In addition, for example, in the valve gear that the flow etc. to the high temperature such as refrigerant, high-pressure fluid is controlled, as gold
Belong to bellows, metallic membrane metal material and use heat resistance, the stainless steel alloy of corrosion resistance excellent, nickel-base alloy, as
The metal material of its welding object object, that is, vibrating part, spool, uses stainless steel alloy.Especially, as stainless steel alloy, make
It is excellent using heat resistance, corrosion resistance, oxidative resistance etc. as nickel-base alloy with austenite stainless steel (for example, SUS316L etc.)
Different Inconel (registered trademark.For example, Inconel625 etc.), according to main causes such as processability, material costs to each portion
Position suitably selects different metal materials, and welds each other to its different metal materials.
Existing technical literature
Patent document
Patent document 1: Japanese Unexamined Patent Publication 2004-162728 bulletin
Patent document 2: Japanese Unexamined Patent Publication 2003-148616 bulletin
Patent document 3: Japanese Unexamined Patent Publication 2000-337736 bulletin
Patent document 4: Japanese Unexamined Patent Publication 2000-88132 bulletin
Patent document 5: Japanese Unexamined Patent Publication 2003-194250 bulletin
Summary of the invention
Problems to be solved by the invention
It is well known, however, that austenite stainless steel is usually the metal material for easily causing weld crack, even if in austenite
It is in the mutual welding of different metal materials of stainless steel and nickel-base alloy etc., it is also envisioned that being easy to produce welding defect.Especially,
When the flexible parts such as the metal bellows being made of light sheet, metallic membrane to be welded in the object position of wall thickness, if being formed
It penetrates through flexible part along plate thickness direction and reaches weld part as the inside at object position, then contraction when molten metal solidifies
It is restricted, therefore is easy to crack in welding solidified portion effect tensile stress.It is therefore desirable to which flexible part can be prevented
With the weld crack in the mutual weld part of different metal materials at object position, and improve welding durability welding structure
It makes.
The purpose of the present invention is providing the weld crack that can be prevented in the mutual weld part of different metal materials, and mentions
The welding structure and valve gear of height welding durability.
Solution for solving the problem
The flexible part solder joints that welding structure of the invention is used to be made of light sheet are in object position, above-mentioned weldering
It connects construction to be characterized in that, the mutual melting and solidification portion of above-mentioned object position and above-mentioned flexible part is mainly by austenite phase
Different metal materials constitute, above-mentioned object position has the interconnecting piece of overshooting shape, which has the first face and it is opposite
Second face of side, above-mentioned flexible part have along the soldered portion of the plate in above-mentioned first face of above-mentioned interconnecting piece, above-mentioned melting
Solidified portion is set to the front end in above-mentioned interconnecting piece and above-mentioned soldered portion, and be formed to have by above-mentioned interconnecting piece and on
The section for stating the diameter of the thickness of soldered portion altogether or more is round.
According to such present invention, the front end in the soldered portion of the interconnecting piece and flexible part at object position is equipped with molten
Melt solidified portion, melting and solidification portion is formed to have diameter more than interconnecting piece and soldered portion thickness altogether
Section is round, and thus, it is possible to prevent weld crack.I.e., the front end in welded connection and soldered portion that at this point, melting
Because of metal surface tension and to become section round (becoming spherical if weld part is point), even if thus during solidification
It shrinks, convergent force is also difficult to act on base material, so as to inhibit the generation of tensile stress caused by shrinking.Therefore, even if
Melting and solidification portion be mainly austenite phase different metal materials each other, and the base material on melting and solidification portion, periphery be easy produce
Under conditions of raw weld crack, weld crack can be also prevented, welding durability can be improved by inhibiting residual stress.
At this point, it is preferred that the thickness of the front end side in the front end side of above-mentioned interconnecting piece and above-mentioned soldered portion is phase each other
Same degree.
According to this structure, the thickness of the front end side in the front end side of interconnecting piece and soldered portion is mutually the same journey
Degree, thus when welding these front ends each other, molten metal amount becomes mutually the same degree, shrinkage direction when solidification
Will not deflection, therefore the generation of tensile stress can be further suppressed, so as to prevent weld crack.
Also, it is preferred that above-mentioned object position is mainly made of austenite stainless steel, above-mentioned flexible part is mainly by Ni-based
Alloy is constituted.
According to this structure, object position is mainly made of austenite stainless steel, and flexible part is mainly by nickel-base alloy structure
At, the metal material that thus, it is possible to select to have characteristic appropriate to each each portion, and improve welding durability.
Also, it is preferred that above-mentioned flexible part is created as cylindric and accordion metal bellows, above-mentioned object position
Be affixed to the vibrating part of the axial end of above-mentioned metal bellows, above-mentioned interconnecting piece it is prominent to radial lateral direction and
Be formed as continuous cyclic annular in the circumferential, above-mentioned soldered portion above-mentioned metal bellows axial end to radial outside
To extension, and be formed as continuous cyclic annular in the circumferential, above-mentioned melting and solidification portion is set as along above-mentioned interconnecting piece and above-mentioned
The front end in the portion of being soldered is continuous in the circumferential.
In addition, above-mentioned flexible part is created as cylindric and accordion metal bellows, above-mentioned object position is solid
Due to the vibrating part of the axial end of above-mentioned metal bellows, above-mentioned interconnecting piece is prominent to radial interior direction and is formed
To be continuous cyclic annular in the circumferential, above-mentioned soldered portion prolongs in the axial end of above-mentioned metal bellows to radial interior direction
It stretches, and is formed as continuous cyclic annular in the circumferential, above-mentioned melting and solidification portion is set as along above-mentioned interconnecting piece and above-mentioned is welded
The front end of socket part is continuous in the circumferential.
Also, it is preferred that above-mentioned flexible part is created as cylindric and accordion metal bellows, above-mentioned object position
Be affixed to the vibrating part of the axial end of above-mentioned metal bellows, the lateral direction of above-mentioned interconnecting piece in the axial direction it is prominent and
Be formed as continuous cyclic annular in the circumferential, axial end outside in the axial direction of the above-mentioned soldered portion in above-mentioned metal bellows
To extension, and be formed as continuous cyclic annular in the circumferential, above-mentioned melting and solidification portion is set as along above-mentioned interconnecting piece and above-mentioned
The front end in the portion of being soldered is continuous in the circumferential.
According to these structures, the weld crack in the weld part of metal bellows and vibrating part is prevented, and is improved
In circumferential direction thus the welding durability in continuous melting and solidification portion extends life of product so as to maintain good leakproofness.
Additionally, it is preferred that being used for valve gear, which has set on the indoor spool of valve of valve body and to above-mentioned valve chamber
The diaphragm as above-mentioned flexible part being sealed, above-mentioned valve body have continuous cricoid above-mentioned connection in the circumferential
Portion, above-mentioned diaphragm is configured to have along disk-shaped outer peripheral edge continuous cricoid above-mentioned soldered portion in the circumferential, above-mentioned molten
Melt solidified portion and is set as continuous in the circumferential along the front end in above-mentioned interconnecting piece and above-mentioned soldered portion.
According to this structure, prevent valve body and the welding in the weld part as the diaphragm of flexible part in valve gear from splitting
Line, and thus the welding durability for improving continuous melting and solidification portion in the circumferential extends to maintain good leakproofness
The life of product of valve gear.
Additionally, it is preferred that the diameter in above-mentioned melting and solidification portion relative to by the front end side of above-mentioned interconnecting piece and it is above-mentioned be soldered
The thickness of portion altogether is 1.1 times or more and 1.6 times or less.
According to this structure, the diameter in melting and solidification portion is relative to the thickness gauge by interconnecting piece and soldered portion altogether
It is very little, it is set as 1.1 times or more and 1.6 times hereinafter, to make melting and solidification portion smoothly connect with soldered portion and interconnecting piece
It is continuous, it can be in the portion of being soldered, the front end not residual margin of interconnecting piece, so as to improve welding durability, the mechanics of weld part
Characteristic.
Additionally, it is preferred that above-mentioned first face and above-mentioned second face in above-mentioned interconnecting piece are set as having towards before the interconnecting piece
The intersecting angle to narrow is held, above-mentioned intersecting angle is 40 ° or less.
According to this structure, the first face by being arranged in interconnecting piece with 40 ° narrowed towards front end intersecting angles below
With the second face, convergent force when so as to inhibit molten metal to solidify gives the influence of base material, prevents the welding of interconnecting piece from splitting
Line.
Additionally, it is preferred that above-mentioned soldered portion is turned back made of overlapping by the end that will constitute the light sheet of above-mentioned flexible part
Folded-back part is constituted, and the ora terminalis side of above-mentioned light sheet is arranged along above-mentioned first face of above-mentioned interconnecting piece.
According to this structure, being welded for flexible part is constituted by the folded-back part made of the end fold-back overlapping by light sheet
Socket part is able to suppress the shadow of convergent force when influence, the solidification of heat when welding so that the thickness in the portion of being soldered becomes larger
It rings, prevents the weld crack for being soldered portion.
Valve gear of the invention is characterized in that, is fixed on flexible part by welding structure described in any of the above embodiments
Object position inside device.
It is identical as the effect of above-mentioned welding structure according to this valve gear, flexible part and object position can be prevented
Weld crack and improve welding durability, so as to extend the life of product of valve gear.
The effect of invention
Welding structure and valve gear according to the present invention can prevent the weldering in the mutual weld part of different metal materials
Crackle is connect, and improves welding durability.
Detailed description of the invention
Fig. 1 is the cross-sectional view for indicating to have used the bellows of the welding structure of first embodiment of the invention.
Fig. 2 (A) to (B) is the enlarged cross-sectional view for indicating the major part of above-mentioned bellows.
Fig. 3 is the cross-sectional view for indicating to have used other bellowss of welding structure of first embodiment.
Fig. 4 (A) to (B) is the enlarged cross-sectional view for indicating the major part of above-mentioned other bellowss.
Fig. 5 is the cross-sectional view for indicating to have used the bellows of welding structure of second embodiment of the present invention.
Fig. 6 (A) to (B) is the enlarged cross-sectional view for indicating the major part of above-mentioned bellows.
Fig. 7 is the cross-sectional view for indicating to have used the bellows of welding structure of third embodiment of the present invention.
Fig. 8 (A) to (B) is the enlarged cross-sectional view for indicating the major part of above-mentioned bellows.
Fig. 9 is the cross-sectional view for indicating to have used the valve gear of welding structure of the invention.
Figure 10 is the cross-sectional view for indicating to have used other valve gears of welding structure of the invention.
Figure 11 (A) to (B) is the enlarged cross-sectional view for indicating the major part of above-mentioned valve gear.
In figure:
11,31,41-formed bellow (flexible part), 11a, 31a, 41a-are soldered portion, 12,13,32,33,42,
43-vibrating parts (object position), 14,34,44-melting and solidification portions, 15,35,45-interconnecting pieces, 15a, 35a, 45a-
On one side, the second face 15b, 35b, 45b-, 21-welding bellows (flexible part), 21a-are soldered portion, 22,23-flange parts
Part (object position), 24-melting and solidification portions, 25-interconnecting pieces, the first face 25a-, the second face 25b-, 50-bellows valves
(valve gear), 51-valve chambers, 53-spools, 55-bellowss, 55a-formed bellow (flexible part), 56-interconnecting pieces,
57-melting and solidification portions, 60-diaphragm valves (valve gear), 61-valve chambers, 62h-fixed part (object position), 63-spools,
65-metallic membranes, 65a-are soldered portion, 67-interconnecting pieces, the first face 67a-, the second face 67b-, 68-melting and solidification portions.
Specific embodiment
The welding structure of first embodiment of the invention refrigerating air-conditioning, valve (valve gear), pump, pressure switch,
The seal member for being suitable as to stretch in the various equipment such as pipe-fitting joint, connector come using metal bellows.Make
For the valve gear of the refrigerating air-conditioning that is used in this equipment etc., such as have various control valves, pressure responsive valve etc., as
The metal bellows of flexible part is fixed on the object position (for example, valve body, spool) of (for example, valve chamber) inside device, companion
It is capable of expansion and contraction with the relative displacement between object position.
Hereinafter, being said based on Fig. 1, Fig. 2 (A) to the bellows of (B) to the welding structure for having used first embodiment
It is bright.Fig. 1 is the cross-sectional view for indicating to have used the bellows 10 of the welding structure of first embodiment.Fig. 2 (A) to (B) is to indicate
The enlarged cross-sectional view of the major part of bellows 10 is in Fig. 1 with the enlarged drawing of the part indicated circle enclosure A.In addition, Fig. 2
(A) major part of the bellows 10 after solder joints is indicated, Fig. 2 (B) indicates the state before the solder joints of bellows 10.
As shown in Figure 1, Figure 2 shown in (A) to (B), bellows 10 has: the formed bellow (flexible portion as metal bellows
Part) 11；And it is fixed on a pair of flanges portion at axial direction (direction shown in FIG. 1 along central axis X) both ends of formed bellow 11
Part (object position) 12,13.Formed bellow 11 and a pair of flanges component 12,13 are mutually welded by melting and solidification portion 14
Engagement.
Formed bellow 11 by generally cylindrical shape and is formed as accordion by punch process (for example, bulging processing) etc.
Light sheet constitute, the thickness t of light sheet1For 0.1mm~0.2mm or so.As shown in Fig. 2, in formed bellow 11
Axial ends portion, which is equipped with, is soldered portion 11a, this is soldered portion 11a folded-back part structure as made of the end fold-back overlapping by light sheet
At this is soldered portion 11a and extends in the axial ends portion of formed bellow 11 to radial lateral direction, and is formed as in week
It is continuous cyclic annular upwards.It is soldered the thickness T of portion 11aBIt is the size (T for being overlapped the light sheet of two formed bellows 11B
=2t1), it is 0.2mm~0.4mm or so.
Vibrating part 12,13 is constituted by being integrally formed into discoid plate, thickness and formed bellow 11
Thickness t1Compared to more sufficiently large, rigid body is essentially become for flexible formed bellow 11.In flange
The outer peripheral edge of mutually opposed face 12a, 13a in component 12,13 are respectively formed with the interconnecting piece welded for formed bellow 11
15.Interconnecting piece 15 is prominent towards radial lateral direction from the periphery of vibrating part 12,13, and is formed as continuous in the circumferential
Ring-type.In addition, interconnecting piece 15 has with face 12a, 13a of vibrating part 12,13 continuously at the same face as shown in Fig. 2 (B)
The second face 15b of first face 15a and its opposite side, and be formed as overshooting shape.With regard to formed bellow 11 soldered portion 11a and
It says, ora terminalis lateral edge the first face 15a setting of the light sheet in folded-back part.
Vibrating part 12,13 before with 11 solder joints of formed bellow, as shown in Fig. 2 (B), interconnecting piece 15 has
The third face 15c of continuous with the first face 15a and the second face 15b and composition interconnecting piece 15 front end side.Before interconnecting piece 15
The thickness T of end sideF, namely third face 15c height dimension become thickness T with soldered portion 11aBIt is identical
Degree (TF=TB, 0.2mm~0.4mm or so).In addition, being soldered the thickness T of portion 11aBWith the front end side of interconnecting piece 15
Thickness TFIt is preferably set to 0.8≤(TB/TF)≤1.2.In addition, the first face 15a and the second face 15b are set as having towards even
The intersecting angle θ that the front end of socket part 15 narrows, intersecting angle θ are 30 ° or so.In addition, the first face 15a and the second face 15b
Intersecting angle θ is preferably 40 ° or less.
Melting and solidification portion 14 using the electron beam welding of the front end side from soldered portion 11a and interconnecting piece 15 by being made
It is soldered the front end melting of portion 11a and interconnecting piece 15, is solidified to form, and be formed as continuous cyclic annular in the circumferential.It is molten
Melt the metal-cured Shi Yinqi surface tension that solidified portion 14 has been melted in welding and shrinks glomeration to be formed as section circle
Shape.The center O in melting and solidification portion 14 is located on the extended line for being soldered the contact surface (the first face 15a) of portion 11a and interconnecting piece 15,
The radius R in melting and solidification portion 14 is the thickness T for being soldered portion 11aBAnd the thickness T of the front end of interconnecting piece 15FWith
On, i.e., the diameter in melting and solidification portion 14 be formed as the thickness gauge by the front end side of soldered portion 11a and interconnecting piece 15 altogether
More than very little.In addition, melting and solidification portion 14 is preferably in the front end not residual margin for being soldered portion 11a, interconnecting piece 15, and smoothly
Continuously, therefore, the diameter in melting and solidification portion 14 is preferably the thickness by the front end side of soldered portion 11a and interconnecting piece 15 altogether
1.1 times or more and 1.6 times or less for spending size.
Hereinafter, based on Fig. 3, Fig. 4 (A) to (B) to other bellowss of the welding structure for having used first embodiment into
Row explanation.Fig. 3 is the cross-sectional view for indicating to have used the bellows 20 of the welding structure of first embodiment.Fig. 4 (A) to (B) is
The enlarged cross-sectional view for indicating the major part of bellows 20 is in Fig. 3 with the enlarged drawing of the position indicated circle enclosure A.In addition,
Fig. 4 (A) indicates the major part of the bellows 20 after solder joints, and Fig. 4 (B) indicates the shape before the solder joints of bellows 20
State.
As shown in Fig. 3, Fig. 4 (A) to (B), bellows 20 has: the welding bellows (flexible portion as metal bellows
Part) 21；And it is fixed on a pair of flanges portion at axial direction (direction shown in Fig. 3 along central axis X) both ends of welding bellows 21
Part (object position) 22,23.Welding bellows 21 and a pair of flanges component 22,23 are mutually welded by melting and solidification portion 24
Engagement.
Welding bellows 21 will be by that will be overlapped component made of two ring-types and the light sheet of section waveform in the axial direction
It is arranged multiple, and alternately welds mutual inner peripheral and outer peripheral edge and engaged by weld part 21b, to be integrally formed
For cylindric and accordion.The thickness of each light sheet is 0.1mm~0.2mm or so, is overlapped the thickness of two light sheets
Spend size t2For 0.2mm~0.4mm or so.As shown in Fig. 4 (A) to (B), edge is equipped in the axial ends portion of welding bellows 21
The soldered portion 21a of the interconnecting piece 25 of vibrating part 22,23.This is soldered portion 21a in the axial ends portion of welding bellows 21
Extend to radial lateral direction, and is formed as continuous cyclic annular in the circumferential.It is soldered the thickness T of portion 21aBIt is weight
The thickness t of folded two light sheets2, it is 0.2mm~0.4mm or so.
Vibrating part 22,23 is constituted by being integrally formed into discoid plate, thickness and welding bellows 21
Thickness t2Compared to more sufficiently large, for flexible welding bellows 21, rigid body is essentially become.In flange
The outer peripheral edge of mutually opposed face 22a, 23a in component 22,23 is respectively formed with the interconnecting piece welded for welding bellows 21
25.Interconnecting piece 25 is prominent towards radial lateral direction from the periphery of vibrating part 22,23, and is formed as continuous in the circumferential
Ring-type.In addition, interconnecting piece 25 have with face 22a, 23a of vibrating part 22,23 continuously at the first face 25a of the same face and
Second face 25b of its opposite side, and be formed as overshooting shape.The soldered portion 21a of welding bellows 21 is set as along interconnecting piece 25
First face 25a.
Vibrating part 22,23 before with 21 solder joints of welding bellows, as shown in Fig. 4 (B), interconnecting piece 25 has
The third face 25c of continuous with the first face 25a and the second face 25b and composition interconnecting piece 25 front end side.Before interconnecting piece 25
The thickness T of end sideF, namely third face 25c height dimension become thickness T with soldered portion 21aBIt is identical
Degree (TF=TB, 0.2mm~0.4mm or so).In addition, being soldered the thickness T of portion 21aBWith the front end side of interconnecting piece 25
Thickness TFIt is preferably set to 0.8≤(TB/TF)≤1.2.In addition, the first face 25a and the second face 25b are set as having towards even
The intersecting angle θ that the front end of socket part 25 narrows, intersecting angle θ are 30 ° or so.In addition, the first face 25a and the second face 25b
Intersecting angle θ is preferably 40 ° or less.
Melting and solidification portion 24 using the electron beam welding of the front end side from soldered portion 21a and interconnecting piece 25 by being made
It is soldered the front end melting of portion 21a and interconnecting piece 25, is solidified to form, and be formed as continuous cyclic annular in the circumferential.It is molten
Melt the metal-cured Shi Yinqi surface tension that solidified portion 24 has been melted in welding and shrinks glomeration to be formed as section circle
Shape.The center O in melting and solidification portion 24 is located on the extended line for being soldered the contact surface (the first face 25a) of portion 21a and interconnecting piece 25,
The radius R in melting and solidification portion 24 is the thickness T for being soldered portion 21aBAnd the thickness T of the front end side of interconnecting piece 25FWith
On, i.e., the diameter in melting and solidification portion 24 be formed as the thickness gauge by the front end side of soldered portion 21a and interconnecting piece 25 altogether
More than very little.In addition, melting and solidification portion 24 is preferably in the front end not residual margin for being soldered portion 21a, interconnecting piece 25, and smoothly
Continuously, therefore, the diameter in melting and solidification portion 24 is preferably the thickness by the front end side of soldered portion 21a and interconnecting piece 25 altogether
1.1 times or more and 1.6 times or less for spending size.
Hereinafter, being illustrated to the metal material for each component for constituting bellows 10,20.Formed bellow 11 and welding
Bellows 21 is mainly made of nickel-base alloy.As nickel-base alloy, preferably heat resistance, corrosion resistance, oxidative resistance etc. is excellent
Inconel (registered trademark).Nickel-base alloy be containing nickel amount be 50% or more material, can exemplify NCF600, NCF601,
(it is anti-corrosion resistance to that above mark is based on JIS G 4902:1992 by NCF625, NCF690, NCF718, NCF750, NCF751, NCF80A
Hot superalloy plate).
Vibrating part 12,13,22,23 is mainly made of austenite stainless steel.As austenite stainless steel, preferably
The material of SUS304 system, wherein SUS316L, SUS316LN, SUS321, SUS347 of corrosion resistance excellent can be exemplified.In addition,
As the metal material of vibrating part 12,13,22,23, nickel-base alloy, other alloys also can be used, as formed bellow
11 and welding bellows 21 metal material, austenite stainless steel, other alloys also can be used.I.e., pass through shaping wave
The welding of the metal material of the metal material and vibrating part 12,13,22,23 of line pipe 11 and welding bellows 21 and formed
Melting and solidification portion 14,24 is mainly the combination of austenite phase, and the welding for this different metal materials can be suitably
Utilize the welding structure of present embodiment.
According to above present embodiment, the front end side of the interconnecting piece 15,25 of vibrating part 12,13,22,23 and shaping wave
The thickness T of the front end side of soldered portion 11a, 21a of line pipe 11 and welding bellows 21F、TBIt is mutually the same journey
Degree is equipped with melting and solidification portion 14,24, melting and solidification portion in the front end of this interconnecting piece 15,25 and soldered portion 11a, 21a
14,24 be formed to have will be more than the front end side of interconnecting piece 15,25 and soldered portion 11a, 21a thickness altogether
The section of diameter is round.Welding has the interconnecting piece 15,25 of the thickness of mutually the same degree and is welded in this way
The front end of socket part 11a, 21a each other, thus molten metal become because of surface tension section circle, even if in the mistake of solidification
It is shunk in journey, convergent force is also difficult to act on base material, so as to inhibit the generation of tensile stress caused by shrinking.Therefore,
Even if in melting and solidification portion 14,24, the different metal materials of mainly austenite phase are each other, and in melting and solidification portion 14,24, week
The base material on side is easy to produce under conditions of weld crack, can also prevent weld crack, can be mentioned by inhibiting residual stress
Height welding durability.
In addition, being formed as by the diameter in melting and solidification portion 14,24 by soldered portion 11a, 21a and interconnecting piece 15,25
More than thickness altogether, to keep melting and solidification portion 14,24 and soldered portion 11a, 21a and interconnecting piece 15,25 flat
Sliding ground is continuous, can not be in the front end residual margin for being soldered portion 11a, 21a, interconnecting piece 15,25, so as to improve weld part
Welding durability, mechanical characteristic.
In addition, passing through the first face being arranged in interconnecting piece 15,25 with about 30 ° of the intersecting angle θ to narrow towards front end
15a, 25a and second face 15b, 25b can be prevented so that convergent force when molten metal being inhibited to solidify gives the influence of base material
Interconnecting piece 15,25 peripheries weld crack.
In addition, in formed bellow 11, it is soldered by being made of the folded-back part of the end of fold-back light sheet and overlapping
Portion 11a is able to suppress convergent force when influence, the solidification of heat when welding so that the thickness for being soldered portion 11a becomes larger
It influences, the weld crack for being soldered portion 11a can be prevented.
In addition, being formed with continuous melting and solidification portion in the circumferential in the case where bellows 10,20 is used for valve gear
14,24, welding durability is improved by preventing the weld crack in the melting and solidification portion 14,24 peripheries, so as to maintain ripple
The good leakproofness of pipe 10,20, thus, it is possible to extend the life of product of valve gear.
Hereinafter, being illustrated based on Fig. 5, Fig. 6 (A) to the bellows of (B) to second embodiment of the present invention.Fig. 5 is
Expression has used the cross-sectional view of the bellows 30 of the welding structure of second embodiment.Fig. 6 (A) is to indicate bellows 30 to (B)
Major part enlarged cross-sectional view, be the enlarged drawing of part indicated in Fig. 5 with circle enclosure A.In addition, Fig. 6 (A) indicates weldering
The major part of bellows 30 after engagement, Fig. 6 (B) indicate the state before the solder joints of bellows 30.
As shown in Fig. 5, Fig. 6 (A) to (B), bellows 30 has: the formed bellow (flexible portion as metal bellows
Part) 31；And it is fixed on a pair of flanges portion at axial direction (direction shown in fig. 5 along central axis X) both ends of formed bellow 31
Part (object position) 32,33.Formed bellow 31 and a pair of flanges component 32,33 are mutually welded by melting and solidification portion 34
Engagement.
Formed bellow 31 is identical as the formed bellow 11 of above-mentioned first embodiment, and axially both ends are equipped with quilt
Weld part 31a, this is soldered portion 31a and extends in the axial ends portion of formed bellow 31 to radial interior direction, and shape
As continuous cyclic annular in the circumferential.Vibrating part 32,33 is respectively provided with the interconnecting piece 35 welded for formed bellow 31.Connection
The outer peripheral edge of portion 35 from face 32a, 33a opposite each other of vibrating part 32,33 are prominent to radial interior direction, and are formed
It is continuous cyclic annular in the circumferential.In addition, interconnecting piece 35 has with face 32a, 33a continuously at the first face 35a of the same face, its phase
The third face 35c of the front end side of the second face 35b and composition interconnecting piece 35 that toss about, and be formed as overshooting shape.
Melting and solidification portion 34 using the electron beam welding of the front end side from soldered portion 31a and interconnecting piece 35 by being made
It is soldered the front end melting of portion 31a and interconnecting piece 35, is solidified to form, and be formed as continuous cyclic annular in the circumferential.It is molten
Melt the metal-cured Shi Yinqi surface tension that solidified portion 34 has been melted in welding and shrinks glomeration to be formed as section circle
Shape.The diameter in the melting and solidification portion 34 is formed as the thickness T of the front end side of soldered portion 31a and interconnecting piece 35B、TF
It is more than thickness altogether.
The shape and size of above formed bellow 31, vibrating part 32,33 and melting and solidification portion 34 with it is above-mentioned
First embodiment is identical.In addition, constituting the metal material and above-mentioned first of formed bellow 31 and vibrating part 32,33 in fact
It applies that mode is identical, passes through the combination that the melting and solidification portion 34 that the welding is formed is mainly austenite phase.It is real according to this second
The bellows 30 for applying mode can play the role of being the same as the above first embodiment, effect.
Hereinafter, being illustrated based on Fig. 7, Fig. 8 (A) to the bellows of (B) to third embodiment of the present invention.Fig. 7 is
Expression has used the cross-sectional view of the bellows 40 of the welding structure of third embodiment.Fig. 8 (A) is to indicate bellows 40 to (B)
Major part enlarged cross-sectional view, be the enlarged drawing of part indicated in Fig. 7 with circle enclosure A.In addition, Fig. 8 (A) is to indicate
The major part of bellows 40 after solder joints, Fig. 8 (B) indicate the state before the solder joints of bellows 40.
As shown in Fig. 7, Fig. 8 (A) to (B), bellows 40 has: the formed bellow (flexible portion as metal bellows
Part) 41；And it is fixed on a pair of flanges portion at axial direction (direction shown in Fig. 7 along central axis X) both ends of formed bellow 41
Part (object position) 42,43.Formed bellow 41 and a pair of flanges component 42,43 are mutually welded by melting and solidification portion 44
Engagement.
Formed bellow 41 is identical as the formed bellow 11 of above-mentioned first embodiment, and axially both ends are equipped with quilt
Weld part 41a, this is soldered portion 41a and extends in the lateral direction of the axial ends portion of formed bellow 41 in the axial direction, and shape
As continuous cyclic annular in the circumferential.Vibrating part 42,43 is respectively provided with the interconnecting piece 45 welded for formed bellow 41.Connection
Portion 45 is prominent from the lateral direction of opposed radially face 42a, 43a in the axial direction in the inner circumferential side of vibrating part 42,43, and
Be formed as continuous cyclic annular in the circumferential.In addition, interconnecting piece 45 have with face 42a, 43a continuously at the first face 45a of the same face,
The third face 45c of the front end side of the second face 45b and composition interconnecting piece 45 of its opposite side, and be formed as overshooting shape.
Melting and solidification portion 44 using the electron beam welding of the front end side from soldered portion 41a and interconnecting piece 45 by being made
It is soldered the front end melting of portion 41a and interconnecting piece 45, is solidified to form, and be formed as continuous cyclic annular in the circumferential.It is molten
Melt the metal-cured Shi Yinqi surface tension that solidified portion 44 has been melted in welding and shrinks glomeration to be formed as section circle
Shape.The diameter in the melting and solidification portion 44 is formed as the thickness T of the front end side of soldered portion 41a and interconnecting piece 45B、TF
It is more than thickness altogether.
The shape and size of above formed bellow 41, vibrating part 42,43 and melting and solidification portion 44 with it is above-mentioned
First embodiment is identical.In addition, constituting the metal material and above-mentioned first of formed bellow 41 and vibrating part 42,43 in fact
It applies that mode is identical, passes through the combination that the melting and solidification portion 44 that the welding is formed is mainly austenite phase.It is real according to this third
The bellows 40 for applying mode, can play the effect roughly the same with above-mentioned first embodiment, effect.
Hereinafter, being illustrated referring to Fig. 9 to the valve gear for having used welding structure of the invention.Fig. 9 is to indicate to use
The cross-sectional view of valve gear, that is, bellows valve 50 of welding structure of the invention.As shown in figure 9, bellows valve 50 is manual opening and closing class
The valve of type, the valve for being opened and closed type manually have: in the internal valve body 52 with valve chamber 51；Valve master is movably set
The spool 53 of body 52；In order to make spool 53 move forward and backward and carry out the operation portion 54 of rotation process；And as to valve chamber 51 into
The bellows 55 of the flexible part of row sealing.
Valve body 52 has: the first component 52a and second component 52b being mutually screwed；And it is fixed on first
The inside of component 52a and the guiding parts 52c of the advance and retreat of guide spool 53.First component 52a has: in one end-side openings and with
The inflow entrance 52d that valve chamber 51 is connected to；In the outflux 52e that another side is open and is connected to valve chamber 51；And as outflux
The valve port 52f of opening made of 52e is open to valve chamber 51.Second component 52b is integrally formed into cylindrical shape, and is configured to have rotation
Turn the bearing portion 52g of the axle portion 54b of support operation portion 54 and to the liner being sealed between bearing portion 52g and axle portion 54b
52h。
It is cylindric that spool 53 is formed as the entirety extended on axial (direction shown in Fig. 9 along central axis X), by being oriented to
Component 52c guides advance and retreat in the axial direction.The top of spool 53 is cylindrical shape, is formed with internal thread part 53a in inner circumferential surface.In valve
The lower end of core 53 is fixed with connecting member 53b, and valve port 52f can be seated at by being equipped in the lower surface of connecting member 53b
Valve member 53c.
The axle portion 54b that operation portion 54 has handle 54a and upper end is fixed on handle 54a and is extended in the axial direction, and revolve
It is supported in the bearing portion 52g of valve body 52 with turning.It is formed with external thread part 54c in the outer peripheral surface of axle portion 54b, the external thread part
The internal thread part 53a of 54c and spool 53 is screwed.Therefore, following feed screw mechanism is constituted: by the rotation of handle 54a
Operation, the driving force effect of up and down direction drive spool in the internal thread part 53a with the external thread part 54c of rotation thread binding
About 53 retreat.
There is bellows 55 formed bellow 55a, formed bellow 55a to be fixed on the guiding parts as vibrating part
Between 52c and spool 53.Specifically, the interconnecting piece 56 of a side is formed in the upper end of spool 53, in the upper of guiding parts 52c
End is formed with the interconnecting piece 56 of another party, the upper and lower side edge of interconnecting piece 56 and formed bellow 55a above and below these respectively by
57 solder joints of melting and solidification portion.The welding structure of this bellows 55 and the bellows 10 of above-mentioned first embodiment are identical,
There is leakproofness and continuously melting and solidification portion 57 is set in the circumferential.Therefore, the inside by guiding parts 52c and valve
The inner space of the second component 52b of the valve body 52 of inner space and the outside as bellows 55 that room 51 is connected to is by wave
Line pipe 55 seals.
In above bellows valve 50, by the handle 54a of operation portion 54 by rotation process, so that spool 53 is outside
The feed screw mechanism of threaded portion 54c and internal thread part 53a and between valve closing position and valve opening position in the up-down direction
It moves forward and backward, which is the position that valve member 53c moved downwards and be seated at valve port 52e, which is valve
Component 53c is moved upward and from the position that valve port 52e disseats.With the movement of this spool 53, the shaping wave of bellows 55
Line pipe 55a or more is flexible and follows the movement of spool 33, to maintain leakproofness.
In above bellows valve 50, the interconnecting piece 56 of formed bellow 55a, spool 53 and guiding parts 52c, with
And the shape and size in melting and solidification portion 57 are identical as the welding structure of above-mentioned first embodiment.In addition, constituting shaping wave
The metal material of line pipe 55a, spool 53 and guiding parts 52c are the same as the above first embodiment, and pass through the welding shape
At melting and solidification portion 57 be mainly austenite phase combination.According to this bellows valve 50, formed bellow 55a and spool 53
And the interconnecting piece 56 of guiding parts 52c can be played by the welding structure that melting and solidification portion 57 is welded and be implemented with above-mentioned first
The roughly the same effect of mode, effect.Even if i.e., the different metal materials of the mainly austenite phase of melting and solidification portion 57 are each other,
Also weld crack can be prevented, by inhibiting residual stress to can be improved welding durability.Therefore, the good of bellows 55 can be maintained
Good leakproofness, therefore it is able to extend the life of product of bellows valve 50.
Hereinafter, referring to Fig.1 0, Figure 11 (A) to (B) says the other valve gears for having used welding structure of the invention
It is bright.Figure 10 is the cross-sectional view for indicating to have used the diaphragm valve 60 as other valve gears of welding structure of the invention.Figure 11 (A)
It is the enlarged cross-sectional view for indicating the major part of diaphragm valve 60 to (B).As shown in Figure 10, diaphragm valve 60 is manual opening and closing type
Valve, the valve for being opened and closed type manually have: in the internal valve body 62 with valve chamber 61；Spool 63 in valve chamber 61 is set；
In order to make spool 63 move forward and backward and carry out the operation portion 64 of rotation process；And as the flexible portion being sealed to valve chamber 61
The metallic membrane 65 of part.Valve body 62 has the first component 62a and second component 62b being mutually screwed.
The first component 62a of valve body 62 has: in the inflow entrance 62c that one end-side openings are connected to valve chamber 61；In
Another side is open and the outflux 62d that is connected to valve chamber 61；And it is open made of being open as inflow entrance 62c to valve chamber 61
Valve port 62e.The second component 62b of valve body 62 is integrally formed into cylindrical shape, is configured to have rotation support operation portion 64
The bearing portion 62f of the axle portion 64b and internal thread part 62g being screwed with the external thread part 64c of axle portion 64b.In addition, first
It is formed with whole cylindrical standing in the valve chamber 61 of component 62a and consolidating as the object position for fixing metallic membrane 65
Determine portion 62h.
Spool 63 is configured to include the spool shell 63a in the cylinder box-like of lower opening；It is held in spool shell 63a
Inside valve member 63b；And relative to valve body 62 to valve opening position (top of Figure 10) to spool shell 63a and valve
The spring members 63c of component 63b force.Spool shell 63a, which is set as surface on it, has protrusion, and the protrusion and metallic membrane
65 lower surface abuts, and is displaced metallic membrane 65 upwards.Valve member 63b is tree
The liner of rouge system or rubber system, is configured to be seated at valve port 62e and can be closed.
Operation portion 64 has: handle 64a；The axle portion 64b that upper end is fixed on handle 64a and is extended in the axial direction；It is set to
Than the external thread part 64c of axle portion 64b on the lower；And the abutting part set on the front end than external thread part 64c more on the lower
64d.Axle portion 64b is rotatably supported on the bearing portion 62f of valve body 52, external thread part 64c and internal thread part 62g thread binding.It supports
Socket part 64d is set as abutting from the opposite side of spool 63 with metallic membrane 65.
In this diaphragm valve 60, by the rotation process of handle 64a, external thread part 64c guided by internal thread part 62g and
About 64 operation portion moves forward and backward, and the metallic membrane 65 abutted with abutting part 64d is bent and upper and lower displacement to face outside direction, adjoint
The displacement of metallic membrane 65, spool 63 move up and down.I.e., spool 63 between valve closing position and valve opening position in the up-down direction
It moves forward and backward, which is the position that valve member 63b moved downwards and be seated at valve port 62e, which is valve
Component 63b is moved upward and from the position that valve port 62e disseats.
Hereinafter, welding structure progress of 1 (A) to (B) to the fixed part 62h of metallic membrane 65 and valve body 62 referring to Fig.1
Explanation.Metallic membrane 65 is whole to be made of the light sheet of circular plate (plate-like), and thickness is 0.2mm~0.4mm or so.
The lateral direction extension to radial direction and in the circumferential continuous cricoid soldered portion are equipped in the outer peripheral edge of metallic membrane 65
65a.It is soldered the thickness T of portion 65aBIt is left for the 0.2mm~0.4mm roughly the same with the thickness of metallic membrane 65
It is right.Portion 65a is soldered to be arranged along the upper surface of fixed part 62h.
In fixed part 62h, upper surface is formed as continuous in the circumferential to radial lateral direction interconnecting piece 67 outstanding
Ring-type.As shown in Figure 11 (B), interconnecting piece 67 has and the continuous first face 67a in upper surface of fixed part 62h, its opposite side
The third face 67c of the front end side of the second face 67b and composition interconnecting piece 67 of (downside), and be formed as overshooting shape.Interconnecting piece 67
Front end side thickness TF, namely third face 67c height dimension become thickness T with soldered portion 65aBPhase
Same degree (TF=TB, 0.2mm~0.4mm or so).In addition, being soldered the thickness T of portion 65aBWith the front end of interconnecting piece 67
The thickness T of sideFIt is preferably set to 0.8≤(TB/TF)≤1.2.In addition, the first face 67a and the second face 67b are set as with court
The intersecting angle θ to narrow to the front end of interconnecting piece 67, intersecting angle θ are 30 ° or so.In addition, the first face 67a and the second face
The intersecting angle θ of 67b is preferably 40 ° or less.
The soldered portion 65a of metallic membrane 65 and the interconnecting piece 67 of valve body 62 are connect by melting and solidification portion 68
It closes.Melting and solidification portion 68 using the electron beam welding of the front end side from soldered portion 65a and interconnecting piece 67 by making to be welded
The melting of the front end of socket part 65a and interconnecting piece 67 is solidified to form, and is formed as continuous cyclic annular in the circumferential.Melting is solid
Change portion 68 in welding the metal-cured Shi Yinqi surface tension that has melted and shrink glomeration to be formed as section circle.It is molten
The center O for melting solidified portion 68 is located on the extended line for being soldered the contact surface (the first face 67a) of portion 65a and interconnecting piece 67, melting
The radius R of solidified portion 68 is the thickness T for being soldered portion 65aBAnd the thickness T of the front end side of interconnecting piece 67FMore than,
I.e., the diameter in melting and solidification portion 68 is formed as the thickness by the front end side of soldered portion 65a and interconnecting piece 67 altogether
More than.In addition, melting and solidification portion 68 is preferably being soldered the front end not residual margin of portion 65a, interconnecting piece 67, and smoothly connect
Continuous, therefore, the diameter in melting and solidification portion 68 is preferably the thickness by the front end side of soldered portion 65a and interconnecting piece 67 altogether
1.1 times or more and 1.6 times or less of size.
The metal material of each component as diaphragm valve 60 more than composition, metallic membrane 65 and above-mentioned first embodiment
Formed bellow 11 and welding bellows 21 it is identical, be mainly made of nickel-base alloy, valve body 62 and it is above-mentioned first implement
The vibrating part 12,13,22,23 of mode is identical, is mainly made of austenite stainless steel.In addition, the group as metal material
It closes, the melting and solidification portion 68 formed by the welding of the metal material of the metal material and valve body 62 of metallic membrane 65 is main
It is the combination of austenite phase, the welding for this different metal materials can be suitably with welding structure of the invention
It makes.
In addition, the diaphragm valve of the fixed part 62h of valve body is fixed in the outer peripheral edge that diaphragm valve 60 is not limited to metallic membrane,
The axle portion for being also possible to spool is formed through the inner circumferential of insertion hole and solder joints insertion hole in the central portion of metallic membrane
The diaphragm valve of the structure of the axle portion of edge and spool.In this case, the inner peripheral in the insertion hole of metallic membrane is equipped with the portion of being soldered,
It is equipped with interconnecting piece in the axle portion of spool, the front end of these soldered portions and interconnecting piece is by the engagement of melting and solidification portion each other
It can.As this welding structure, construction identical with the respective embodiments described above can be used.
According to above diaphragm valve 60, the front end side of the soldered portion 65a of metallic membrane 65 and the connection of valve body 62
The thickness T of the front end side in portion 67F、TBIt is mutually the same degree, before this soldered portion 65a and interconnecting piece 67
End is equipped with melting and solidification portion 68, and melting and solidification portion 68 is formed to have the front end side by soldered portion 65a and interconnecting piece 67
The section of diameter more than thickness altogether is round.Welding has the thickness of mutually the same degree in this way
Soldered portion 65a and interconnecting piece 67 front end each other, thus molten metal become because of surface tension section circle,
Even if shrinking during solidification, convergent force is also difficult to act on base material, answers so as to inhibit to shrink caused stretch
The generation of power.Therefore, though melting and solidification portion 68 be mainly austenite phase different metal materials each other, and in melting and solidification
Portion 68, periphery base material be easy to produce under conditions of weld crack, can also prevent weld crack, can by inhibit residual answer
Power improves welding durability.
In addition, being formed as closing the front end side of soldered portion 65a and interconnecting piece 67 by the diameter in melting and solidification portion 68
It is more than the thickness to get up, thus keep melting and solidification portion 68 and soldered portion 65a and interconnecting piece 67 smoothly continuous, it can
Not in the front end residual margin for being soldered portion 65a, interconnecting piece 67, so as to improve welding durability, the mechanics spy of weld part
Property.
In addition, passing through the first face 67a being arranged in interconnecting piece 67 with 40 ° narrowed towards front end intersecting angle θ below
With the second face 67b, convergent force when so as to inhibit molten metal to solidify gives the influence of base material, prevents 67 periphery of interconnecting piece
Weld crack.
In addition, continuous melting and solidification portion 68 in the circumferential is formed with, by preventing in the metallic membrane 65 of diaphragm valve 60
The weld crack on 68 periphery of melting and solidification portion improves welding durability, so as to maintaining the good sealing of metallic membrane 65
Property, thus, it is possible to extend the life of product of diaphragm valve 60.
In addition, the present invention is not limited to above embodiment, the other structures comprising can be realized the purpose of the present invention
Deng, it is as shown below as deformation etc. be also included in the present invention.For example, in the above-described embodiment, as using this hair
The device of bright welding structure instantiates valve gear, but welding structure of the invention is not limited to valve gear, can also apply to
Refrigerating air-conditioning, pipe-fitting joint, connector, pump, pressure switch etc..
In addition, in the above-described embodiment, as flexible part, instantiating formed bellow 11,31,41,55a, welding
Bellows 21 and metallic membrane 65, but the flexible part as application welding structure of the invention, can select any component.
In addition, in the above-described embodiment, as the metal material of flexible part and object position, instantiating nickel-base alloy
With the combination of austenite stainless steel, but the combination as the metal material that can apply welding structure of the invention, as long as molten
Melt the different metal materials that solidified portion is mainly austenite phase, is not limited to the above embodiment.In addition, for flexibility
Shape, the size of the interconnecting piece in the soldered portion and object position of component, are also not limited to the above embodiment, as long as shape
Melting and solidification portion at the front end in them is that section is round.
In addition, in the above-described embodiment, the front end for welding the portion of being soldered and interconnecting piece is fetched by electron beam welding
And melting and solidification portion is formed, but it is not limited to this, can be appropriate using laser welding, microplasma welding (TIG weld) etc.
Welding method.
More than, the embodiments of the present invention are described in detail with reference to the drawings, but specific structure is not limited to this
A little embodiments, the change etc. for not departing from the design of the range of purport of the invention are also included in the present invention.
Claims (11)
1. a kind of welding structure, the flexible part solder joints for being used to be made of light sheet are in object position, above-mentioned welding
It constructs and is characterized in that,
Above-mentioned object position and the mutual melting and solidification portion of above-mentioned flexible part are mainly by the dissimilar metal material of austenite phase
Material is constituted,
Above-mentioned object position has the interconnecting piece of overshooting shape, which has second face in the first face and its opposite side,
Above-mentioned flexible part has the soldered portion of the plate along above-mentioned first face of above-mentioned interconnecting piece,
Above-mentioned melting and solidification portion is set to the front end in above-mentioned interconnecting piece and above-mentioned soldered portion, and being formed to have will be above-mentioned
The section of the diameter more than thickness of interconnecting piece and above-mentioned soldered portion altogether is round.
2. welding structure according to claim 1, which is characterized in that
The thickness of the front end side in the front end side of above-mentioned interconnecting piece and above-mentioned soldered portion is mutually the same degree.
3. welding structure according to claim 1 or 2, which is characterized in that
Above-mentioned object position is mainly made of austenite stainless steel, and above-mentioned flexible part is mainly made of nickel-base alloy.
4. welding structure according to any one of claims 1 to 3, which is characterized in that
Above-mentioned flexible part is created as cylindric and accordion metal bellows, and above-mentioned object position is affixed to above-mentioned gold
Belong to the vibrating part of the axial end of bellows,
Above-mentioned interconnecting piece is prominent to radial lateral direction and is formed as continuous cyclic annular in the circumferential,
Above-mentioned soldered portion extends in the axial end of above-mentioned metal bellows to radial lateral direction, and is formed as in week
It is continuous cyclic annular upwards,
Above-mentioned melting and solidification portion is set as continuous in the circumferential along the front end in above-mentioned interconnecting piece and above-mentioned soldered portion.
5. welding structure according to any one of claims 1 to 3, which is characterized in that
Above-mentioned flexible part is created as cylindric and accordion metal bellows, and above-mentioned object position is affixed to above-mentioned gold
Belong to the vibrating part of the axial end of bellows,
Above-mentioned interconnecting piece is prominent to radial interior direction and is formed as continuous cyclic annular in the circumferential,
Above-mentioned soldered portion extends in the axial end of above-mentioned metal bellows to radial interior direction, and is formed as in week
It is continuous cyclic annular upwards,
Above-mentioned melting and solidification portion is set as continuous in the circumferential along the front end in above-mentioned interconnecting piece and above-mentioned soldered portion.
6. welding structure according to any one of claims 1 to 3, which is characterized in that
Above-mentioned flexible part is created as cylindric and accordion metal bellows, and above-mentioned object position is affixed to above-mentioned gold
Belong to the vibrating part of the axial end of bellows,
The lateral direction of above-mentioned interconnecting piece in the axial direction is prominent and is formed as continuous cyclic annular in the circumferential,
Above-mentioned soldered portion extends in the axial end lateral direction in the axial direction of above-mentioned metal bellows, and is formed as in week
It is continuous cyclic annular upwards,
Above-mentioned melting and solidification portion is set as continuous in the circumferential along the front end in above-mentioned interconnecting piece and above-mentioned soldered portion.
7. welding structure according to any one of claims 1 to 3, which is characterized in that
For valve gear, it valve indoor spool and the work that is sealed to above-mentioned valve chamber which, which has set on valve body,
For the diaphragm of above-mentioned flexible part,
Above-mentioned valve body has continuous cricoid above-mentioned interconnecting piece in the circumferential,
Above-mentioned diaphragm is configured to have along disk-shaped outer peripheral edge continuous cricoid above-mentioned soldered portion in the circumferential,
Above-mentioned melting and solidification portion is set as continuous in the circumferential along the front end in above-mentioned interconnecting piece and above-mentioned soldered portion.
8. welding structure according to any one of claims 1 to 7, which is characterized in that
The diameter in above-mentioned melting and solidification portion is relative to the thickness by the front end side of above-mentioned interconnecting piece and above-mentioned soldered portion altogether
Size is spent, is 1.1 times or more and 1.6 times or less.
9. welding structure according to any one of claims 1 to 8, which is characterized in that
Above-mentioned first face in above-mentioned interconnecting piece is set as having towards what the front end of the interconnecting piece narrowed with above-mentioned second face to intersect
Angle, above-mentioned intersecting angle are 40 ° or less.
10. welding structure according to any one of claims 1 to 9, which is characterized in that
Above-mentioned soldered portion is constituted by will constitute folded-back part made of the end fold-back overlapping of the light sheet of above-mentioned flexible part, edge
The ora terminalis side of above-mentioned light sheet is arranged in above-mentioned first face of above-mentioned interconnecting piece.
11. a kind of valve gear, which is characterized in that
Flexible part is fixed on to the object portion inside device by welding structure described in any one of claim 1~10
Position.
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|---|---|---|---|
| JP2018098684A JP6900348B2 (en) | 2018-05-23 | 2018-05-23 | Welded structure and valve gear |
| JP2018-098684 | 2018-05-23 |
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| CN110529593B CN110529593B (en) | 2021-07-02 |
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|---|---|---|---|---|
| US3977685A (en) * | 1974-11-05 | 1976-08-31 | Eg&G, Inc. | Rotating bellows seal |
| JPS56106259U (en) * | 1980-01-17 | 1981-08-18 | ||
| JPS57124154A (en) * | 1981-01-23 | 1982-08-02 | Hitachi Ltd | Expansion bellows |
| JPS58107293A (en) * | 1981-12-22 | 1983-06-25 | Fuji Seikou Kk | Welding method for thin walled tubular body |
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| CN2064698U (en) * | 1990-04-03 | 1990-10-31 | 常劲松 | Joint fixing device by fusion welding for helical corrugated metal hose |
| US5083750A (en) * | 1990-05-17 | 1992-01-28 | Balik Gesellschaft M.B.H. | Membrane valve |
| US5375854A (en) * | 1990-05-22 | 1994-12-27 | Flexibox Limited | Mechanical face seals |
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| JPS58102879U (en) * | 1981-12-30 | 1983-07-13 | 富士精工株式会社 | Vacuum gate valve |
| JPH02142691A (en) * | 1988-11-22 | 1990-05-31 | Fujitsu Ltd | Welding method |
| JPH04105662U (en) * | 1991-02-22 | 1992-09-11 | 日本電気株式会社 | welded bellows |
| JP3207911B2 (en) * | 1992-03-19 | 2001-09-10 | 日本バルカー工業株式会社 | Manufacturing method of metal bellows |
| JP2002286146A (en) * | 2001-03-26 | 2002-10-03 | Toyoda Gosei Co Ltd | Diaphragm valve |
| WO2012147416A1 (en) * | 2011-04-26 | 2012-11-01 | イーグル工業株式会社 | Welded bellows for semiconductor production devices |
| EP3159583B1 (en) * | 2012-10-04 | 2020-09-09 | Eagle Industry Co., Ltd. | Mechanical seal |
| CN103672191A (en) * | 2013-11-25 | 2014-03-26 | 江苏星河阀门有限公司 | Welding structure of metal bellow assembly for valve |
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| US3977685A (en) * | 1974-11-05 | 1976-08-31 | Eg&G, Inc. | Rotating bellows seal |
| JPS56106259U (en) * | 1980-01-17 | 1981-08-18 | ||
| JPS57124154A (en) * | 1981-01-23 | 1982-08-02 | Hitachi Ltd | Expansion bellows |
| JPS58107293A (en) * | 1981-12-22 | 1983-06-25 | Fuji Seikou Kk | Welding method for thin walled tubular body |
| US4749200A (en) * | 1986-05-19 | 1988-06-07 | John Crane-Houdaille, Inc. | Mechanical seal with welded bellows |
| JPS63289372A (en) * | 1987-05-21 | 1988-11-25 | Sumitomo Metal Ind Ltd | Welded metallic bellows |
| CN2058220U (en) * | 1989-10-12 | 1990-06-13 | 武汉电度表厂 | Gas valve with high hermetization |
| CN2064698U (en) * | 1990-04-03 | 1990-10-31 | 常劲松 | Joint fixing device by fusion welding for helical corrugated metal hose |
| US5083750A (en) * | 1990-05-17 | 1992-01-28 | Balik Gesellschaft M.B.H. | Membrane valve |
| US5375854A (en) * | 1990-05-22 | 1994-12-27 | Flexibox Limited | Mechanical face seals |
Also Published As
| Publication number | Publication date |
|---|---|
| JP6900348B2 (en) | 2021-07-07 |
| JP2019202329A (en) | 2019-11-28 |
| CN110529593B (en) | 2021-07-02 |
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