CN107695486A - A kind of welding point and mother metal compatibility of deformation control method - Google Patents

A kind of welding point and mother metal compatibility of deformation control method Download PDF

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Publication number
CN107695486A
CN107695486A CN201711107063.7A CN201711107063A CN107695486A CN 107695486 A CN107695486 A CN 107695486A CN 201711107063 A CN201711107063 A CN 201711107063A CN 107695486 A CN107695486 A CN 107695486A
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China
Prior art keywords
welding
joint area
backing plate
mother metal
deformation control
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CN201711107063.7A
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Chinese (zh)
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CN107695486B (en
Inventor
任金欣
张鑫
孙少波
杨帆
陈久友
李宏伟
李保永
闫寒
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Beijing Hangxing Technology Development Co Ltd
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Beijing Hangxing Technology Development Co Ltd
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Priority to CN201711107063.7A priority Critical patent/CN107695486B/en
Publication of CN107695486A publication Critical patent/CN107695486A/en
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    • BPERFORMING OPERATIONS; TRANSPORTING
    • B23MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23KSOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
    • B23K9/00Arc welding or cutting
    • B23K9/16Arc welding or cutting making use of shielding gas
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B23MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23KSOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
    • B23K9/00Arc welding or cutting
    • B23K9/32Accessories

Abstract

The invention discloses a kind of welding point and mother metal compatibility of deformation control method, including:Step 1: an auxiliary welding device is provided, including backing plate, support frame and a pair of clamping devices, support frame are arranged at the back side of backing plate;Step 2: a sheet material is curled into a tubular structure, to form the joint area of Longitudinal extending;Step 3: auxiliary welding device to be arranged to joint area to be welded, detailed process is:Backing plate is arranged to the back side of joint area, and support frame is supported between the internal face of tubular structure and backing plate, to make backing plate and joint area keep being bonded whereby, is respectively clamped the both ends of backing plate and joint area using a pair of clamping devices;Step 4: welded from the positive butt joint position of joint area.The cylinder of institute's welding forming of the present invention, internal soundness is good at its welding line joint, and topside height meets hot superplastic forming requirement, and back-welding shape quality is high, will not be cracking at welding line joint position or the defects of thickness is insufficient.

Description

A kind of welding point and mother metal compatibility of deformation control method
Technical field
The invention belongs to Metal Material Welding technical field, more particularly to a kind of welding point to control with mother metal compatibility of deformation Method.
Background technology
Aluminium alloy has good corrosion resistance, higher specific strength and thermal conductivity and can keep good mechanics at low temperature The features such as performance, in fields such as Aero-Space, track traffic, weaponrys using quite varied.In aerospace field, aluminium closes Gold closes the integration of special-shaped pneumatic members type component product, light weight degree more and more higher, and the accuracy of manufacture requires also more next It is higher.And aluminum alloy cabin to be formed welding must be encapsulated via metal welding techniques before closing the shaping of class pneumatic members Come.In heat forming processes sealed cylinder everywhere stress and it is heated to follow corresponding rule, and weld seam position is exactly often hot Sensitive part in forming process.Therefore it is required that weld seam in heat forming processes with mother metal body compatible deformation, just can guarantee that most Good forming quality.And weld seam internal soundness, the raised control in surface reinforcement and the back side exactly the shaping of weld seam later stage be can be with mother The key point of material body compatible deformation.
The content of the invention
For above-mentioned technical problem, it is an object of the invention to provide a kind of welding point and mother metal compatibility of deformation controlling party Method, it can improve weldquality, avoid the occurrence of cracking or the defects of thickness deficiency.
The technical scheme is that:
A kind of welding point and mother metal compatibility of deformation control method, including:
Step 1: providing an auxiliary welding device, the auxiliary welding device includes backing plate, support frame and a pair of clampings Device, wherein, support frame as described above is arranged at the back side of the backing plate;
Step 2: a sheet material is curled into a tubular structure, to form the joint area of Longitudinal extending;
Step 3: the auxiliary welding device to be arranged to joint area to be welded, detailed process is:By the backing plate Be arranged at the back side of the joint area, and make support frame as described above be supported on the internal face of the tubular structure and the backing plate it Between, to make the backing plate and the joint area keep being bonded whereby, using a pair of clamping devices respectively by the two of the backing plate End clamps with the joint area;
Step 4: just being welded in face of the joint area from the joint area.
Preferably, in described welding point and mother metal compatibility of deformation control method, the material of the sheet material is that aluminium closes Gold.
Preferably, in described welding point and mother metal compatibility of deformation control method, the material of the backing plate for copper or Stainless steel.
Preferably, in described welding point and mother metal compatibility of deformation control method, support frame as described above is scalable branch Support.
Preferably, in described welding point and mother metal compatibility of deformation control method, in the step 1, the backing plate First layer and the second layer including the setting that is stacked on one another, wherein, the first layer is formed with being distributed in first layer surface Multiple stomatas;In the step 3, when the auxiliary welding device is arranged at into joint area to be welded, by described first Layer abuts in the back side of the joint area;In step 4, protection gas is led to the back side of the joint area by the stomata Body.
Preferably, described welding point from described with mother metal compatibility of deformation control method, in the step 4, connecing Head position is just welded in face of the joint area, and its detailed process includes:Using manual argon arc welding to the connector portions Position is welded, and first carries out positioning welding, and anchor point is uniformly distributed on whole piece longitudinal seam;After the completion of positioning welding, The one end for selecting the joint area proceeds by integral solder, and Real Time Observation longitudinal seam shapes situation in welding process.
Preferably, in described welding point and mother metal compatibility of deformation control method, in the step 4, the positioning During welding, single anchor point length control is controlled in 10-20mm in 3-5mm, positioning space.
Preferably, in described welding point and mother metal compatibility of deformation control method, in the step 4, the positioning During welding, welding parameter is:Welding current 90-110A, welding gun air-flow 10-15L/min, shield gas flow rate 5L/min, protection Gas is argon gas.
Preferably, in described welding point and mother metal compatibility of deformation control method, in the step 4, the entirety During welding, welding parameter is:Welding current 80-100A, welding gun air-flow 10-15L/min, shield gas flow rate 5L/min, protection Gas is argon gas.
Preferably, in described welding point and mother metal compatibility of deformation control method, in the step 2, by described in Sheet material is curled into before tubular structure, also carries out pre-welding treatment to the sheet material, and the pre-welding treatment includes:The sheet material is entered Row pickling, the nonmetallic inclusion on surface is removed, is placed in clean environment, welded in 24 hours;To be welded is connect The polishing cleaning of head position, until exposing brilliant white metallic luster, and dip in acetone with white silk and wipe joint area to be welded Totally.
Welding point of the present invention has the beneficial effect that with mother metal compatibility of deformation control method:
(1) cylinder of institute's welding forming of the present invention, internal soundness is good at its welding line joint, and topside height meets that heat is super and is moulded into Shape requirement, back-welding shape quality are high;
(2) sealed cylinder obtained after present invention welding, is continued to be handled using superplastic forming, is welded in processing procedure Position and being consistent property of mother metal body are stitched, will not be cracking at welding line joint position or the defects of thickness is insufficient;
(3) present invention can effectively improve the follow-up super hot formed first-time qualification rate of modeling, improve production efficiency, reduce into This.
Brief description of the drawings
Fig. 1 is the structural representation for the sheet material being crimped in one embodiment;
Fig. 2 is the structural representation of auxiliary welding device in one embodiment of the present invention.
Embodiment
In order to facilitate the understanding of the purposes, features and advantages of the present invention, below in conjunction with the accompanying drawings to the present invention Embodiment be described in detail.
The invention provides a kind of welding point and mother metal compatibility of deformation control method, including:
Step 1: provide an auxiliary welding device (see Fig. 2), the auxiliary welding device include backing plate 1, support frame 2 with And a pair of clamping devices 3, wherein, support frame as described above 2 is arranged at the back side of the backing plate 1;
Step 2: a sheet material is curled into a tubular structure, to form the joint area of Longitudinal extending (see Fig. 1);
Step 3: the auxiliary welding device to be arranged to joint area to be welded, detailed process is:By the backing plate 1 is arranged at the back side of the joint area, and support frame as described above 2 is supported on the internal face of the tubular structure and the backing plate Between, to make the backing plate and the joint area keep being bonded whereby, using a pair of clamping devices 3 respectively by the backing plate Both ends clamp with the joint area;
Step 4: just being welded in face of the joint area from the joint area.
Present invention is particularly suitable for following Cylinder shape constructional element:Carry out one is needed after the completion of the parent part welding of the Cylinder shape constructional element Body chemical conversion shape (such as super modeling hot forming), and completely put on an equal footing welding line joint and mother metal body in this forming process.Pin To above-mentioned Cylinder shape constructional element, respective standard need to be met by not requiring nothing more than its weld seam quality itself, it is necessary to ensure the association of weld seam and mother metal Uniformity is adjusted, so as to meet follow-up Condition of Forming.Therefore, the invention provides an auxiliary welding device, backing plate is set The rear side that support frame is supported on to backing plate at the back side of joint area is put, backing plate and joint area is kept fitting whereby, then use A pair of clamping devices clamp the both ends of backing plate and joint area.In whole welding process, joint area is all the time by backing plate Support and limitation, the weld seam formed will not stay, and back-welding shape is intact, and its internal soundness and external mass are excellent.Using The weld seam that the inventive method obtains meets the compatibility required during post forming, is not in weld seam in forming process Ftracture or shape the problems such as poor in position.
In one embodiment, clamping device 3 can be made up of a holder body 6 and a bolt 7, the one end of holder body 6 It is connected on backing plate, the other end is extended to before backing plate, and the other end is formed with the screw screwed in for bolt 7.Work as pad When plate abuts against joint area, joint area is placed exactly between backing plate and holder body, and bolt is screwed in screw, and by joint Position and backing plate clamp.After the completion of welding, backing plate and joint area can be separated with regulating bolt.
Preferably, in described welding point and mother metal compatibility of deformation control method, the material of the sheet material is aluminium alloy. Preferably, sheet material can be 5083 or 5A06 deformed aluminum alloy plates.
Preferably, in described welding point and mother metal compatibility of deformation control method, the material of the backing plate 1 is for copper or not Become rusty steel.
Preferably, in described welding point and mother metal compatibility of deformation control method, support frame as described above 2 is retractable supports Frame.
Adjust support frame height, backing plate is brought into close contact with joint area together with, so as to joint area provide surely Surely clamp and support, to prevent that weld seam stays in welding process, ensure that back of weld shaping is intact.
Support frame 2 can be a rigid tensioning mechanism, and the rigid tensioning mechanism is made up of steel cylinder 9 and the body of rod 8, passes through tune The matching mechanism of the whole body of rod and steel cylinder reaches the purpose for holding out against copper pad and mother metal weld seam bottom.In one embodiment, steel Cylinder has been internally formed internal thread, and the body of rod includes canned paragraph and active segment, and one end of canned paragraph is connected to backing plate back, the other end Steel cylinder is fixedly attached to, one end of active segment has external screw thread, and tubular knot can be resisted against by screwing in the inside of steel cylinder, the other end The inwall of structure.The length of support frame is adjusted by turn active segment, so as to which backing plate is held out against in joint area.Support frame may be used also To use other implementations.
Preferably, in described welding point and mother metal compatibility of deformation control method, in the step 1, the backing plate 1 First layer 5 and the second layer 10 including the setting that is stacked on one another, wherein, the first layer is formed with being distributed in first layer surface Multiple stomatas 4;In the step 3, when the auxiliary welding device is arranged at into joint area to be welded, by described in First layer abuts in the back side of the joint area;In step 4, led to by the stomata to the back side of the joint area and protected Protect gas.
Specifically, the side of multiple stomatas can be connection, i.e., multiple stomatas form air flue on the first layer, the air flue Opened wide on the surface of first layer, protective gas is passed through into air flue by one or several stomatas positioned at outside, protects gas Body purging is at the back side of joint area, so as to be protected to weld seam.
Preferably, in described welding point and mother metal compatibility of deformation control method, in the step 4, from the joint Position is just welded in face of the joint area, and its detailed process includes:Using manual argon arc welding to the joint area Welded, and first carry out positioning welding, anchor point is uniformly distributed on whole piece longitudinal seam;After the completion of positioning welding, choosing One end of the fixed joint area proceeds by integral solder, and Real Time Observation longitudinal seam shapes situation in welding process.
Selection manual argon arc welding can be weld seam according to the real-time adjusting process parameter of appearance of weld situation in welding process into Shape reaches best effects.
Preferably, in described welding point and mother metal compatibility of deformation control method, in the step 4, the tack welding When connecing, single anchor point length control is controlled in 10-20mm in 3-5mm, positioning space.
Preferably, in described welding point and mother metal compatibility of deformation control method, in the step 4, the tack welding When connecing, welding parameter is:Welding current 90-110A, welding gun air-flow 10-15L/min, shield gas flow rate 5L/min, protect gas Body is argon gas.
Preferably, in described welding point and mother metal compatibility of deformation control method, in the step 4, the overall weldering When connecing, welding parameter is:Welding current 80-100A, welding gun air-flow 10-15L/min, shield gas flow rate 5L/min, protect gas Body is argon gas.
Preferably, in described welding point and mother metal compatibility of deformation control method, in the step 2, by the plate Material is curled into before tubular structure, also carries out pre-welding treatment to the sheet material, and the pre-welding treatment includes:The sheet material is carried out Pickling, the nonmetallic inclusion on surface is removed, is placed in clean environment, welded in 24 hours;By joint to be welded Position polishing cleaning, until exposing brilliant white metallic luster, and dips in acetone with white silk and wipes joint area to be welded Only.
To further illustrate technical scheme, following examples are now provided.
Embodiment one
By taking certain aluminum alloy thin board member as an example, part material is 5083 aluminium alloys, length 1100mm, thickness 3mm, is enclosed after justifying Drum diameter 219mm.
Welded by following processing step:
(1) frock (i.e. auxiliary welding device) is designed:The frock is used to clamp connector portions to be welded in welding process Position and the back side for being supported in welding position.Fig. 2 is tool structure schematic diagram, and frock can freely be adjusted including one according to fusion length The strip copper pad 1 and support frame 2 of length are saved, a clamping device 3 is respectively installed at copper pad both ends.Wherein copper pad It is used for must uniformly open aperture 4 in the plane (i.e. the first layer of backing plate) of bead contact in welding process in the logical guarantor of back of weld Protect gas.
(2) welding preparation:Pickling is carried out to aluminum alloy thin board member, removes the non-gold such as oxide-film, the greasy dirt of piece surface Belong to impurity, and be placed in clean environment, it is necessary to manual argon arc welding welding was carried out in 24 hours.
(3) component circle circle docking:By aluminum alloy thin board member circle into cylindrical shape, align weld seam, ensures joint welding size Gap is not more than 0.3mm, and jump is not more than 0.3mm.Joint material wind brush is entered after joint dimension meets welding requirements Row polishing cleaning, until exposing brilliant white metallic luster, and dips in acetone by joint area wiped clean with white silk.
(4) assembly tooling:Strip copper pad 1 is positioned over to the back side of joint area, while adjusts support frame 2 by copper packing Plate is completely bonded with the back side of joint area.Then joint area is clamped with the clamping device 3 at backing plate both ends, prevents connector portions Position play.
(5) manual argon arc welding welds:Longitudinal seam is welded by the way of manual argon arc welding.First to aluminum alloy thin board member Carry out positioning welding, it is desirable to which anchor point is uniformly distributed on whole piece longitudinal seam, and single tack weld length control is in 3mm, solder joint Spacing is controlled in 10mm.During positioning welding, use main technologic parameters as follows:Welding current 90A, welding gun air-flow 15L/min, Back side backing plate shield gas flow rate 5L/min, protective gas is argon gas.After the completion of tack welding, selected one end starts to carry out weld seam Formal integral solder, Real Time Observation appearance of weld situation in welding process, should control weld seam topside height can not it is too high not yet Front can be made to produce depression.Selected major weld process parameters are:Welding current 80A, welding gun air-flow 15L/min, the back side Backing plate shield gas flow rate 5L/min, protective gas are argon gas.
Characterize data:Postwelding carries out tension test, tensile strength 343MPa, elongation percentage 16.12% to weld seam.
Embodiment two
Change the welding condition of manual argon arc welding welding, it is consistent in other steps and embodiment one.
Specifically, the welding condition of manual argon arc welding welding:Longitudinal seam is welded by the way of manual argon arc welding.It is first Positioning welding first is carried out to aluminum alloy thin board member, it is desirable to which anchor point is uniformly distributed on whole piece longitudinal seam, single tack weld Length control is controlled in 20mm in 5mm, spot pitch.During positioning welding, use main technologic parameters as follows:Welding current 110A, welding gun air-flow 10L/min, back side backing plate shield gas flow rate 5L/min, protective gas is argon gas.After the completion of tack welding, Selected one end starts to carry out weld seam formal integral solder, Real Time Observation appearance of weld situation in welding process, should control weldering Seam topside height too high can not can not make front produce depression.Selected major weld process parameters are:Welding current 100A, welding gun air-flow 10L/min, back side backing plate shield gas flow rate 5L/min, protective gas is argon gas.
Characterize data:Postwelding carries out tension test, tensile strength 347MPa, elongation percentage 14.3% to weld seam.
Although the present invention is disclosed as above with preferred embodiment, it is not for limiting the present invention, any this area skill Art personnel without departing from the spirit and scope of the present invention, can make possible variation and modification, therefore, guarantor of the invention Shield scope should be defined by the scope that the claims in the present invention are defined.

Claims (10)

1. a kind of welding point and mother metal compatibility of deformation control method, it is characterised in that including:
Step 1: providing an auxiliary welding device, the auxiliary welding device includes backing plate, support frame and clamps dress a pair Put, wherein support frame as described above is arranged at the back side of the backing plate;
Step 2: a sheet material is curled into a tubular structure, to form the joint area of Longitudinal extending;
Step 3: the auxiliary welding device to be arranged to joint area to be welded, detailed process is:The backing plate is set In the back side of the joint area, and support frame as described above is set to be supported between the internal face of the tubular structure and the backing plate, To make the backing plate and the joint area keep be bonded whereby, using a pair of clamping devices respectively by the both ends of the backing plate and The joint area clamps;
Step 4: just being welded in face of the joint area from the joint area.
2. welding point as claimed in claim 1 and mother metal compatibility of deformation control method, it is characterised in that the material of the sheet material Matter is aluminium alloy.
3. welding point as claimed in claim 1 or 2 and mother metal compatibility of deformation control method, it is characterised in that the backing plate Material be copper or stainless steel.
4. welding point as claimed in claim 1 or 2 and mother metal compatibility of deformation control method, it is characterised in that the support Frame is Telescopic support.
5. welding point as claimed in claim 1 or 2 and mother metal compatibility of deformation control method, it is characterised in that the step In one, the backing plate includes the first layer and the second layer for the setting that is stacked on one another, wherein, the first layer is described formed with being distributed in Multiple stomatas of first layer surface;In the step 3, the auxiliary welding device is being arranged to joint area to be welded When, the first layer is abutted in the back side of the joint area;In step 4, by the stomata to the joint area The back side leads to protective gas.
6. welding point as claimed in claim 1 or 2 and mother metal compatibility of deformation control method, it is characterised in that the step In four, from just being welded in face of the joint area for the joint area, its detailed process includes:Using manual argon arc welding The joint area is welded, and first carries out positioning welding, anchor point is uniformly distributed on whole piece longitudinal seam;Positioning After the completion of welding, the one end for selecting the joint area proceeds by integral solder, Real Time Observation longitudinal seam in welding process Shaping situation.
7. welding point as claimed in claim 6 and mother metal compatibility of deformation control method, it is characterised in that the step 4 In, during the positioning welding, single anchor point length control is controlled in 10-20mm in 3-5mm, positioning space.
8. welding point as claimed in claim 6 and mother metal compatibility of deformation control method, it is characterised in that the step 4 In, during the positioning welding, welding parameter is:Welding current 90-110A, welding gun air-flow 10-15L/min, shield gas flow rate 5L/min, protective gas are argon gas.
9. welding point as claimed in claim 6 and mother metal compatibility of deformation control method, it is characterised in that the step 4 In, during the integral solder, welding parameter is:Welding current 80-100A, welding gun air-flow 10-15L/min, shield gas flow rate 5L/min, protective gas are argon gas.
10. welding point as claimed in claim 1 or 2 and mother metal compatibility of deformation control method, it is characterised in that the step In two, before the sheet material is curled into tubular structure, pre-welding treatment, the pre-welding treatment bag also are carried out to the sheet material Include:Pickling is carried out to the sheet material, the nonmetallic inclusion on surface is removed, is placed in clean environment, welded in 24 hours Connect;Joint area to be welded is polished cleaning, until expose brilliant white metallic luster, and dip in acetone with white silk will be to be welded Joint area wiped clean.
CN201711107063.7A 2017-11-10 2017-11-10 Method for coordinately controlling deformation of welding joint and base metal Active CN107695486B (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111001913A (en) * 2019-12-25 2020-04-14 中国核工业二四建设有限公司 Plasma arc automatic welding method for stainless steel butt joint

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Publication number Priority date Publication date Assignee Title
CN203109412U (en) * 2013-01-29 2013-08-07 广东禅涛钢结构有限公司 Steel tube longitudinal weld seam welding device
CN104128694A (en) * 2014-07-24 2014-11-05 江门市新会区同达化工机械制造有限公司 Longitudinal seam red copper liner welding process of steel sheet pressure vessel and red copper liner used by same
CN105364262A (en) * 2015-11-25 2016-03-02 中国石油天然气集团公司 Welding device and copper liner
CN106002002A (en) * 2016-05-06 2016-10-12 兰州兰石重型装备股份有限公司 Thin-wall barrel body anti-deformation device adjustable in diameter
KR20170096522A (en) * 2016-02-16 2017-08-24 장선화 Welding machine for manufacturing pipe

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN203109412U (en) * 2013-01-29 2013-08-07 广东禅涛钢结构有限公司 Steel tube longitudinal weld seam welding device
CN104128694A (en) * 2014-07-24 2014-11-05 江门市新会区同达化工机械制造有限公司 Longitudinal seam red copper liner welding process of steel sheet pressure vessel and red copper liner used by same
CN105364262A (en) * 2015-11-25 2016-03-02 中国石油天然气集团公司 Welding device and copper liner
KR20170096522A (en) * 2016-02-16 2017-08-24 장선화 Welding machine for manufacturing pipe
CN106002002A (en) * 2016-05-06 2016-10-12 兰州兰石重型装备股份有限公司 Thin-wall barrel body anti-deformation device adjustable in diameter

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111001913A (en) * 2019-12-25 2020-04-14 中国核工业二四建设有限公司 Plasma arc automatic welding method for stainless steel butt joint

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