CN115635169A - High-reliability welding method for high-pressure oil cylinder accessory and hydraulic oil cylinder - Google Patents
High-reliability welding method for high-pressure oil cylinder accessory and hydraulic oil cylinder Download PDFInfo
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Abstract
The invention provides a high-reliability welding method for a high-pressure oil cylinder accessory, which comprises the following steps of: s1, assembling and positioning welding the liquid through pipe, the control valve seat and the joint seat to obtain an accessory assembling piece; s2, welding a welding seam between the liquid passing pipe and the control valve seat and a welding seam between the liquid passing pipe and the joint seat by using a welding robot to obtain an accessory welding assembly; and S3, assembling the accessory welding assembly on the cylinder barrel, and welding the welding seam between the joint seat and the cylinder barrel and the welding seam between the control valve seat and the cylinder barrel. The invention also provides a hydraulic oil cylinder welded by the welding method. The high-reliability welding method for the high-pressure oil cylinder accessory and the hydraulic oil cylinder have the advantages of scientific design, low accessory welding liquid leakage rate, good welding quality and high welding efficiency.
Description
Technical Field
The invention relates to the field of oil cylinder welding, in particular to a high-reliability welding method for high-pressure oil cylinder accessories and a hydraulic oil cylinder.
Background
The hydraulic support is an important component in the fully mechanized mining machine, and directly influences the reliability of fully mechanized mining equipment. The hydraulic oil cylinder is the main motion and stress part of the hydraulic support, and the quality of the hydraulic oil cylinder directly determines the safety and the service life of the support. However, one reason for failure of current hydraulic rams is leakage of the attachment welds.
The existing hydraulic oil cylinder accessory welding process comprises the following steps: the method comprises the steps of firstly welding a joint seat on a cylinder barrel, then welding a liquid passing pipe on the joint seat, and finally welding a control valve seat on the liquid passing pipe and welding the control valve seat on the cylinder barrel.
The existing hydraulic oil cylinder accessory welding process mainly has the following defects: (1) The welding of the liquid through pipe, the connector seat and the control valve seat is manual welding, is influenced by the operation of a welder, the welding working angle and the welding walking angle of a gun cannot be unified, the gun conveying speed is not uniform, the distance between a nozzle and a workpiece is not uniform, welding current and voltage fluctuation are easy to generate, the welding seam forming effect is poor, the fusion depth is not uniform, a hardening structure is easy to generate, and the welding efficiency is low; (2) The existing welding process comprises the steps of welding a joint seat, welding a liquid through pipe and welding a control valve seat at last, wherein each step of welding can cause deformation, and manual welding can not keep the same due to the fact that operation is not kept, deformation quantity can be increased, deformation accumulation is caused, stress is easily generated, and then the liquid leakage risk of a welding seam is improved.
Therefore, the existing hydraulic oil cylinder accessory welding seam has the problems of poor welding quality and low welding efficiency, and a new accessory welding method needs to be explored urgently to improve the welding quality and the welding efficiency. The hydraulic support has very important significance for improving the service performance of the hydraulic oil cylinder, further prolonging the service life of the hydraulic support and realizing the efficient operation of the coal fully-mechanized mining equipment under a mine.
Disclosure of Invention
The invention aims to overcome the defects of the prior art, and provides a high-reliability welding method for a high-pressure oil cylinder accessory and a hydraulic oil cylinder, which have the advantages of scientific design, low accessory welding liquid leakage rate, good welding quality and high welding efficiency.
In order to achieve the purpose, the technical scheme adopted by the invention is as follows:
a high-reliability welding method for a high-pressure oil cylinder accessory comprises the following steps:
s1, assembling and positioning welding the liquid through pipe, the control valve seat and the joint seat to obtain an accessory assembling piece;
s2, welding a welding seam between the liquid passing pipe and the control valve seat and a welding seam between the liquid passing pipe and the joint seat by using a welding robot to obtain an accessory welding assembly;
s3, assembling the accessory welding assembly on a cylinder barrel, and welding a welding seam between the joint seat and the cylinder barrel and a welding seam between the control valve seat and the cylinder barrel, wherein the welding seam welding method comprises the following substeps:
s3.1, assembling the accessory welding assembly on the cylinder barrel;
s3.2, performing positioning welding on a welding line between the control valve seat and the cylinder barrel;
s3.3, welding a welding seam between the joint seat and the cylinder barrel;
and S3.4, welding the welding seam between the control valve seat and the cylinder barrel.
Based on the above, in the welding process of the welding robot in the step S2, the accessory assembly is not moved, and the welding gun rotates according to the set parameters to weld the welding line.
Based on the above, the welding method adopted in step S2 is TIG automatic welding, the welding wire is a solid welding wire with a diameter of 1.0mm, and the welding method is as follows: the distance between a nozzle of a welding gun and the workpiece is 8-14mm, the included angle between the welding gun and a liquid through pipe is 40-50 degrees, the welding walking angle is 10-15 degrees, and two layers are welded; after welding, the macroscopic morphology of the welding seam is as follows: the fillet welding height of the two sides is 6-8mm, and the welding line is even and full.
Based on the above, in the welding process of the step S2, the weld is kept vertically upward.
Based on the above, in step S3.3, manual welding is adopted, the arc starting point is a point which is located at the middle point of the short side of the welding seam close to one side of the liquid through pipe and retreats 1-2cm along the welding direction, the arc ending point is a point which is located at the end point of the long side of the welding seam closest to the arc starting point and retreats 1-2cm along the welding direction, and the welding line is started from the arc starting point, is welded for a full circle, continues to weld for 1-2cm forward, and then is pulled back to the arc ending point; the welding method comprises the following steps: the included angle between the welding gun and the side wall of the joint seat is 50-60 degrees, the welding walking angle is 10-15 degrees, the middle point of the short side of the welding seam far away from one side of the liquid through pipe is used as a boundary, the front half circle is a right-hand welding method, the rear half circle is a left-hand welding method, and the welding is carried out for one circle.
Based on the above, in step S3.3, the welding method adopts MAG welding, adopts the large penetration function of the welding machine, and the welding machine sets: fine-2V, dynamic + (5~8),the welding process parameters of the solid welding wire with the diameter of 1.2mm are as follows: welding current of 230-280A, welding voltage of 28-32V, welding speed of 300-400mm/min, protective gas of 80% Ar +20% 2 And the flow rate of the protective gas is 15-20L/min.
Based on the above, in step S3.4, only the welding seams of the control valve seat located at the opposite sides of the liquid through pipe are welded.
Based on the above, in step S3.2, the position of tack welding is the midpoint of the weld line of the control valve seat located at the opposite side of the liquid passing tube.
The invention also provides a hydraulic oil cylinder which comprises a cylinder barrel, a joint seat, a liquid through pipe and a control valve seat, wherein the joint seat, the liquid through pipe and the control valve seat are welded by adopting the high-reliability welding method for the high-pressure oil cylinder accessories.
Compared with the prior art, the invention has outstanding substantive characteristics and remarkable progress, and particularly, the invention adjusts the welding sequence, firstly uses a welding robot to weld the joint seat, the liquid through pipe and the control valve seat into the accessory welding assembly, and then integrally welds the accessory welding assembly onto the cylinder barrel, and has the following advantages:
(1) The accessory splicing part is independently welded and is not limited by an operation space, so that the welding robot can be conveniently welded, through setting, the welding robot can guarantee the consistency of all positions of a welding seam, the welding quality and the welding efficiency are improved on one hand, and on the other hand, the deformation quantity of the joint seat, the liquid through pipe and the control valve seat after welding can be reduced.
(2) Lead to the liquid pipe with control valve seat welding lead to the liquid pipe with the joint seat welding all adopts TIG argon arc welding, through robot arm control welder and work piece contained angle, welding walking angle, nozzle and work piece distance, the welding seam appearance that obtains presents the fish scale shape, has effectively guaranteed the welding seam quality of leading to liquid pipe and control valve seat, joint seat.
(3) The traditional welding of the joint seat and the cylinder barrel needs two times of arc striking and arc stopping, so that arc striking points and arc stopping points are increased, the welding seam is not well formed, the fusion of the arc striking points and the arc stopping points is poor, pits are easy to appear, and the defect rate of the welding seam is increased; this patent can guarantee once to strike arc and receive arc and accomplish the welding through designing welding route and welding gimmick, has guaranteed the fusibility of striking arc point, receipts arc point to the defect rate of welding seam has been reduced.
(4) Because the accessory size is small, the welding seams are relatively close, the welding sequence of the invention reduces the gun transporting difficulty, thereby reducing the welding difficulty.
(5) The joint seat and the cylinder barrel are welded by adopting MAG welding, the large penetration function is started, the energy of the electric arc is compressed, the conical electric arc with larger taper is formed, a drawing pin-shaped molten pool is formed, the welding penetration is increased, the welding root is expanded to the parent metal, the thickness of the welding seam is increased, the welding quality can be ensured by a single welding seam, and two welding seams are needed for common welding, so that the production efficiency is further improved, and the strength and the toughness of the welding seam of the large penetration welding are superior to those of the common welding.
Drawings
FIG. 1 is a schematic view of a tailored blank attachment weld assembly according to the present invention.
FIG. 2 is a schematic structural diagram of a welded hydraulic cylinder barrel according to the present invention.
FIG. 3 is a schematic view of the position of the pilot valve seat and cylinder tack weld of the present invention.
FIG. 4 is a schematic view of the angle between the welding torch and the fluid conduit during welding of the attachment assembly of the present invention.
FIG. 5 is a schematic view of the welding walking angle of the attachment assembly of the present invention.
FIG. 6 is a schematic view of the angle between the welding gun and the side wall of the joint seat when the joint seat and the cylinder barrel are welded.
FIG. 7 is a schematic view of the welding travel angle of the first half circle when the joint seat and the cylinder barrel are welded.
Fig. 8 is a schematic view of the welding travel angle of the rear half-ring when the connector base and the cylinder barrel are welded.
Fig. 9 is a schematic view of a welding line for welding the socket and the cylinder barrel according to the present invention.
FIG. 10 is a schematic structural view of a weld joint between a control valve seat and a cylinder barrel according to the present invention.
In the figure: 1. a liquid pipe is communicated; 2. a control valve seat; 3. a joint base; 4. a welding gun; 5. a cylinder barrel.
Detailed Description
The technical solution of the present invention is further described in detail by the following embodiments.
Example 1
As shown in fig. 1-10, a high reliability welding method for high pressure cylinder accessories comprises the following steps:
(1) And assembling and welding the liquid through pipe 1, the control valve seat 2 and the joint seat 3 in a positioning manner to obtain an accessory assembling piece.
(2) Welding a welding seam between the liquid flowing pipe 1 and the control valve seat 2 and a welding seam between the liquid flowing pipe 1 and the connector seat 3 by using a welding robot, wherein in the welding process, the accessory assembling part is not moved, and a welding gun 4 rotates according to set parameters to weld the welding seams to obtain an accessory welding assembly;
specifically, the accessory assembly part can be clamped by using a clamp on a workbench of a welding robot, the welding seam is kept to be vertically upward in the welding process, the adopted welding method is TIG automatic welding, the welding wire is a phi 1.0mm solid welding wire, and the welding method is as follows: the distance between a nozzle of a welding gun and the workpiece is 8-14mm, the included angle between the welding gun and a liquid through pipe is 40-50 degrees, the welding walking angle is 10-15 degrees, and two layers are welded; after welding, the macroscopic morphology of the welding seam is as follows: the fillet welding height of both sides is 6-8mm, the welding seam is even and full, and the appearance of the welding seam presents fish scale.
(3) The accessory welding assembly is assembled on the cylinder barrel 5, the requirement of the control valve seat 2 on welding precision is not high, and therefore the assembling precision of the joint seat 3 is preferentially guaranteed during assembling.
(4) And (3) performing positioning welding on a welding line between the control valve seat 4 and the cylinder barrel 5, wherein the positioning welding position is at the middle point of the welding line of the control valve seat 4, which is positioned at the opposite side of the liquid through pipe 1.
(5) Manually welding the welding line between the joint seat 3 and the cylinder barrel 5, wherein an arc starting point is a point which is positioned at the middle point of the short side of the welding line close to one side of the liquid passing pipe and retreats 1-2cm along the welding direction, an arc closing point is a point which is positioned at the end point of the long side of the welding line closest to the arc starting point and retreats 1-2cm along the welding direction, the welding line is continuously welded forwards for 1-2cm after a circle is welded from the arc starting point, and then is pulled back to the arc closing point, and the welding gun 4 is convenient to be arranged below the liquid passing pipe 1 by means of manual welding; the welding method comprises the following steps: the included angle between the welding gun and the side wall of the joint seat is 50-60 degrees, the welding walking angle is 10-15 degrees, the middle point of the short side of the welding seam far away from one side of the liquid through pipe is used as a boundary, the front half circle is a right-hand welding method, the rear half circle is a left-hand welding method, and therefore welding can be finished by one-time arc striking and arc stopping, and the fusion of an arc striking point and an arc stopping point is guaranteed.
The welding method adopts MAG welding, adopts the large fusion depth function of a welding machine, and the welding machine is set as follows: fine tuning-2V, dynamic characteristics + (5~8), phi 1.2mm solid welding wire, and welding process parameters are as follows: welding current of 230-280A, welding voltage of 28-32V, welding speed of 300-400mm/min, protective gas of 80% Ar +20% 2 And the flow rate of the protective gas is 15-20L/min. The large penetration can compress electric arc energy to form a conical electric arc with larger taper to form a drawing pin-shaped molten pool, the welding penetration is increased, the welding root expands towards the base metal, the thickness of the welding seam is increased, so that the welding quality can be ensured by a single welding seam, and two welding seams are needed for common welding, thereby further improving the production efficiency, and the welding seam strength and the toughness of the large penetration welding are superior to those of the common welding.
Aiming at the comparison experiments of large-penetration welding and common welding, the invention respectively performs a metallographic experiment, a tensile experiment, an impact experiment and a microhardness experiment. Experiments show that the large-penetration welding saves welding wire consumption by 50% and improves welding efficiency by 50%.
(1) Metallographic experiments: the fusion depth of large-fusion-depth welding is 4mm, the fusion depth of common welding is 2mm, the fusion depth of large-fusion-depth welding is 2 times that of common welding, and the fusion property of the root part of the groove with large fusion depth is excellent.
(2) Tensile and impact testing: the method adopts cross joint welding, single-pass welding is adopted for large-penetration welding, common welding is adopted, 3 pieces are welded in each welding mode, and a plate-shaped tensile sample and a standard impact sample are respectively processed. The mechanical properties of the large penetration and general weld test pieces are shown in Table 1. The tensile strength, yield strength and impact energy of the large-melting-depth single-pass welding are all higher than those of the common two-pass welding.
TABLE 1 mechanical Properties of Large penetration and general weld test pieces
| Welding mode | Tensile strength/MPa | Impact work (-20 deg.C)/J |
| Large penetration weld | 512、499、508 | 35、42、39 |
| General welding | 492、479、473 | 30、28、27 |
The analysis shows that the new large-penetration welding process can obviously improve the welding quality, improve the welding efficiency and reduce the welding cost consumption by one time on the welding of the accessories of the hydraulic oil cylinder, and is an efficient welding method.
(6) And welding the welding seam between the control valve seat 2 and the cylinder barrel 5, and only welding the welding seam of the control valve seat 2 on the opposite side of the liquid through pipe 1 during welding.
Example 2
As shown in fig. 2, the invention further provides a hydraulic cylinder, which comprises a cylinder barrel 5, a joint seat 3, a liquid through pipe 1 and a control valve seat 2, and the joint seat 3, the liquid through pipe 1 and the control valve seat 2 are welded by adopting the high-reliability welding method for the high-pressure cylinder accessories in embodiment 1. The applicant tracks the use conditions of 3000 workpieces in the traditional welding sequence and the welding sequence of the invention, the liquid leakage rate of the accessory weld joint of the traditional welding method is 5%, the liquid leakage rate of the accessory weld joint of the patent is only 0.1%, and the liquid leakage rate of the accessory weld joint is greatly reduced.
Finally, it should be noted that the above examples are only used to illustrate the technical solutions of the present invention and not to limit the same; although the present invention has been described in detail with reference to preferred embodiments, those skilled in the art will understand that: modifications to the specific embodiments of the invention or equivalent substitutions for parts of the technical features may be made; without departing from the spirit of the present invention, it is intended to cover all aspects of the invention as defined by the appended claims.
Claims (9)
1. A high-reliability welding method for a high-pressure oil cylinder accessory is characterized by comprising the following steps:
s1, assembling and positioning welding the liquid through pipe, the control valve seat and the joint seat to obtain an accessory assembling piece;
s2, welding a welding seam between the liquid passing pipe and the control valve seat and a welding seam between the liquid passing pipe and the joint seat by using a welding robot to obtain an accessory welding assembly;
s3, assembling the accessory welding assembly on a cylinder barrel, and welding a welding seam between the joint seat and the cylinder barrel and a welding seam between the control valve seat and the cylinder barrel, wherein the welding seam welding method comprises the following substeps:
s3.1, assembling the accessory welding assembly on the cylinder barrel;
s3.2, performing positioning welding on a welding line between the control valve seat and the cylinder barrel;
s3.3, welding a welding seam between the joint seat and the cylinder barrel;
and S3.4, welding the welding seam between the control valve seat and the cylinder barrel.
2. The high-reliability welding method for the high-pressure oil cylinder accessory according to claim 1, characterized in that: in the welding process of the welding robot in the step S2, the accessory assembling piece is not moved, and the welding gun rotates according to the set parameters to weld the welding seam.
3. The high-reliability welding method for the high-pressure oil cylinder accessory according to claim 2, characterized in that: the welding method adopted in the step S2 is TIG automatic welding, the welding wire is a solid welding wire with the diameter of 1.0mm, and the welding method is as follows: the distance between a nozzle of a welding gun and the workpiece is 8-14mm, the included angle between the welding gun and a liquid through pipe is 40-50 degrees, the welding walking angle is 10-15 degrees, and two layers are welded; after welding, the macroscopic morphology of the welding seam is as follows: the fillet welding height of the two sides is 6-8mm, and the welding line is even and full.
4. The high-reliability welding method for the high-pressure oil cylinder accessory according to claim 3, characterized in that: and S2, in the welding process, keeping the welding line vertically upward.
5. The high-reliability welding method for the high-pressure oil cylinder accessory according to any one of claims 1 to 4, characterized by comprising the following steps: step S3.3, adopting manual welding, wherein an arc starting point is a point which is positioned at the middle point of the short side of a welding seam close to one side of the liquid through pipe and retreats 1-2cm along the welding direction, an arc closing point is a point which is positioned at the end point of the long side of the welding seam closest to the arc starting point and retreats 1-2cm along the welding direction, and a welding line is started from the arc starting point, is welded for a full circle, is continuously welded for 1-2cm forwards, and is then pulled back to the arc closing point; the welding method comprises the following steps: the included angle between the welding gun and the side wall of the joint seat is 50-60 degrees, the welding walking angle is 10-15 degrees, the middle point of the short side of the welding seam far away from one side of the liquid through pipe is used as a boundary, the front half circle is a right-hand welding method, the rear half circle is a left-hand welding method, and the welding is carried out for one circle.
6. The high-reliability welding method for the high-pressure oil cylinder accessory according to claim 5, characterized in that: in step S3.3, the welding method adopts MAG welding, adopts the large penetration function of a welding machine, and weldsMachine setting: fine adjustment of-2V, dynamic characteristics + (5~8), solid welding wire of phi 1.2mm, and welding process parameters are as follows: welding current of 230-280A, welding voltage of 28-32V, welding speed of 300-400mm/min, protective gas of 80% Ar +20% 2 And the flow rate of the protective gas is 15-20L/min.
7. The high-reliability welding method for the high-pressure oil cylinder accessory according to claim 6, characterized in that: and in the step S3.4, only welding seams of the control valve seat, which are positioned on the opposite side edges of the liquid through pipe, are welded.
8. The high-reliability welding method for the high-pressure oil cylinder accessory according to claim 6 or 7, characterized by comprising the following steps of: in step S3.2, the position of tack welding is the midpoint of the weld seam of the control valve seat on the opposite side of the liquid through pipe.
9. The utility model provides a hydraulic cylinder, includes cylinder, joint seat, leads to liquid pipe and control valve seat, its characterized in that: the joint seat, the liquid through pipe and the control valve seat are welded by the high-reliability welding method of the high-pressure oil cylinder accessory as claimed in any one of claims 1 to 8.
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Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH11267830A (en) * | 1998-03-23 | 1999-10-05 | Toshiba Corp | On the spot welding method of hydraulic equipment |
| JP2000009107A (en) * | 1998-06-24 | 2000-01-11 | Komatsu Ltd | Method of reinforcing cylinder tube of hydraulic cylinder and hydraulic cylinder |
| CN101367152A (en) * | 2008-07-31 | 2009-02-18 | 芜湖双翼液压件有限公司 | Self-melting and welding method for hydraulic oil tube |
| CN105728906A (en) * | 2014-12-09 | 2016-07-06 | 重庆金国凯畅机床厂 | Welding technique for oil cylinder |
| CN107225358A (en) * | 2017-07-28 | 2017-10-03 | 郑州煤矿机械集团股份有限公司 | Jack cylinder barrel annex welding method |
| CN108274100A (en) * | 2018-04-26 | 2018-07-13 | 郑州煤矿机械集团股份有限公司 | The welding method of oil cylinder of hydraulic support stainless joint seat |
| CN109175629A (en) * | 2018-10-25 | 2019-01-11 | 江苏三峘液压设备有限公司 | A kind of welding method reducing hydraulic cylinder weld seam |
| CN110681956A (en) * | 2019-10-28 | 2020-01-14 | 平顶山平煤机煤矿机械装备有限公司 | Deep-fusion fillet welding process for welding medium plate of hydraulic support structural part |
| CN112059371A (en) * | 2020-08-26 | 2020-12-11 | 郑州煤矿机械集团股份有限公司 | Automatic welding method for narrow groove of hydraulic support structural part |
| CN112191989A (en) * | 2020-09-29 | 2021-01-08 | 郑州煤矿机械集团股份有限公司 | Method for welding fillet weld of hydraulic support through large penetration depth of robot |
| CN213392951U (en) * | 2020-09-29 | 2021-06-08 | 平顶山平煤机煤矿机械装备有限公司 | Structural assembly for connecting hydraulic oil cylinder and liquid through pipe |
-
2022
- 2022-11-15 CN CN202211420663.XA patent/CN115635169B/en active Active
Patent Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH11267830A (en) * | 1998-03-23 | 1999-10-05 | Toshiba Corp | On the spot welding method of hydraulic equipment |
| JP2000009107A (en) * | 1998-06-24 | 2000-01-11 | Komatsu Ltd | Method of reinforcing cylinder tube of hydraulic cylinder and hydraulic cylinder |
| CN101367152A (en) * | 2008-07-31 | 2009-02-18 | 芜湖双翼液压件有限公司 | Self-melting and welding method for hydraulic oil tube |
| CN105728906A (en) * | 2014-12-09 | 2016-07-06 | 重庆金国凯畅机床厂 | Welding technique for oil cylinder |
| CN107225358A (en) * | 2017-07-28 | 2017-10-03 | 郑州煤矿机械集团股份有限公司 | Jack cylinder barrel annex welding method |
| CN108274100A (en) * | 2018-04-26 | 2018-07-13 | 郑州煤矿机械集团股份有限公司 | The welding method of oil cylinder of hydraulic support stainless joint seat |
| CN109175629A (en) * | 2018-10-25 | 2019-01-11 | 江苏三峘液压设备有限公司 | A kind of welding method reducing hydraulic cylinder weld seam |
| CN110681956A (en) * | 2019-10-28 | 2020-01-14 | 平顶山平煤机煤矿机械装备有限公司 | Deep-fusion fillet welding process for welding medium plate of hydraulic support structural part |
| CN112059371A (en) * | 2020-08-26 | 2020-12-11 | 郑州煤矿机械集团股份有限公司 | Automatic welding method for narrow groove of hydraulic support structural part |
| CN112191989A (en) * | 2020-09-29 | 2021-01-08 | 郑州煤矿机械集团股份有限公司 | Method for welding fillet weld of hydraulic support through large penetration depth of robot |
| CN213392951U (en) * | 2020-09-29 | 2021-06-08 | 平顶山平煤机煤矿机械装备有限公司 | Structural assembly for connecting hydraulic oil cylinder and liquid through pipe |
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