CN114260642B - Repairing method for translation cylinder of forging hydraulic press - Google Patents
Repairing method for translation cylinder of forging hydraulic press Download PDFInfo
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- CN114260642B CN114260642B CN202111161942.4A CN202111161942A CN114260642B CN 114260642 B CN114260642 B CN 114260642B CN 202111161942 A CN202111161942 A CN 202111161942A CN 114260642 B CN114260642 B CN 114260642B
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- 238000000034 method Methods 0.000 title claims abstract description 117
- 238000005242 forging Methods 0.000 title claims abstract description 18
- 238000003466 welding Methods 0.000 claims abstract description 41
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 16
- FGUUSXIOTUKUDN-IBGZPJMESA-N C1(=CC=CC=C1)N1C2=C(NC([C@H](C1)NC=1OC(=NN=1)C1=CC=CC=C1)=O)C=CC=C2 Chemical compound C1(=CC=CC=C1)N1C2=C(NC([C@H](C1)NC=1OC(=NN=1)C1=CC=CC=C1)=O)C=CC=C2 FGUUSXIOTUKUDN-IBGZPJMESA-N 0.000 claims description 7
- 210000001503 joint Anatomy 0.000 claims description 6
- 238000005520 cutting process Methods 0.000 claims description 4
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 description 6
- 238000003754 machining Methods 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 239000010720 hydraulic oil Substances 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 239000003921 oil Substances 0.000 description 2
- 239000002253 acid Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000005498 polishing Methods 0.000 description 1
- 238000003672 processing method Methods 0.000 description 1
- 238000005488 sandblasting Methods 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
- 238000005406 washing Methods 0.000 description 1
Abstract
The invention relates to a method for repairing a translation cylinder of a forging hydraulic press, which comprises the following steps: a. dividing the translation cylinder (1) into two sections of cylinder bodies (5), and processing a connecting shaft hole (7); b. spot welding the outer wall of the segmented cylinder body (5) with a supporting ring (9), and processing the outer circle of the supporting ring (9); c. clamping the outer circle of the supporting ring (9) and processing the inner wall of the water filling hole (2); d. the side wall of the end of the segmented cylinder body (5) is welded with a vertical first process plate (11) and a vertical second process plate (12) in a spot welding mode; e. aligning and adding a first process plate (11) and a second process plate (12); f. assembling and welding the segmented cylinder body (5) and the connecting shaft (10); g. the first process plate (11) and the second process plate (12) are removed. The method segments the whole ultra-long blind hole structure, and the single body is processed from the two ends in a segmented way according to the through holes, so that the processing stroke of the machine tool is reduced, the capability of the existing machine tool can be utilized, and a special machine tool is not needed. The problem of current long blind hole inner wall processing difficulty, processing cost is high is solved.
Description
Technical Field
The invention relates to a method for repairing a translation cylinder of a forging hydraulic press, and belongs to the technical field of forging equipment repair.
Background
The forging hydraulic press uses water-based liquid as a working medium. The translational cylinder of the hydraulic press is a transmission part capable of bidirectionally moving the lower anvil, water is taken as a medium, and after long-term use, the inner wall of the liquid passing cavity is provided with a thick rust layer. Because of the technical transformation of equipment, the hydraulic machine with oil as a working medium is changed. After the hydraulic oil medium is used instead, the inner wall of the movable working cylinder is required to be free from rust, and the purity of the hydraulic oil is ensured, so that the hydraulic part is not damaged. The new product has high cost and long period. With the old restoration, the rust removal effect cannot be achieved by adopting the treatment methods such as acid washing, sand blasting, polishing and the like. The common machine tool is used for processing rust removal, and the movable working cylinder is large in aperture, deep in hole and blind in hole, so that the machining capacity of the conventional machine tool is exceeded, and a special machine tool is needed for processing. By changing the structure of the translation cylinder, the problem of repairing the movable working cylinder of the hydraulic press is solved by using the existing machine tool and adopting a special processing method.
Disclosure of Invention
The invention aims to solve the technical problems that the existing equipment is difficult to process the inner wall of the long blind hole, the processing cost is high, and the efficiency is low.
The technical scheme adopted for solving the technical problems is as follows: the repairing method of the translation cylinder of the forging hydraulic press comprises the following steps:
a. dividing the translation cylinder into two segmented cylinders from the blind hole section, and processing a butt joint end face and a connecting shaft hole in the blind hole section of the segmented cylinders;
b. the outer walls of the two ends of the segmented cylinder body are respectively spot-welded with the supporting rings, and the outer circles of the two supporting rings are processed, so that the outer circles of the two supporting rings are consistent;
c. clamping the outer circle of the support ring, machining the inner wall of a water filling hole, turning around to machine the inner wall of another water filling hole according to the same method, and taking down the support ring after finishing machining;
d. spot welding a first process plate and a second process plate on the side wall surface of the hole end of the guide sleeve of the segmented cylinder body, wherein the first process plate and the second process plate are vertically arranged;
e. aligning and adding a first process plate and a second process plate;
f. assembling the sectional cylinder bodies and the processed connecting shafts, enabling two ends of the connecting shafts to penetrate into the connecting shaft holes of the two sectional cylinder bodies, and welding the connecting shafts with the butt joint end surfaces of the sectional cylinder bodies;
g. and removing the first process plate and the second process plate.
In the step a, gas cutting is adopted to cut the blind hole section of the translation cylinder to form two sectional cylinders.
Before the supporting ring is arranged in the step b, the cross center line should be drawn on the outer side of the segmented cylinder body according to the guide sleeve hole and the connecting shaft hole as references.
In the method, lathe processing is adopted in the steps b and c; after the guide sleeve hole and the connecting shaft hole are provided with lathe center plugs, processing the outer circle of the outer supporting ring of the segmented cylinder body by the lathe center plugs; after the central plug is removed, the outer circle of the supporting ring is clamped by the central frame of the lathe, and the inner wall of the water filling hole is processed by a long cutter bar.
In the method, the section of the translation cylinder is of a square structure, the connecting shaft is of a cross-shaped structure with large middle and small two ends, and the middle of the connecting shaft is identical to the translation cylinder in shape.
And e, aligning and adding the first process plate and the second process plate according to the cross line, the guide sleeve hole and the connecting shaft hole in the step of the method, and ensuring that the center distances from the first process plate and the second process plate to the guide sleeve hole and the connecting shaft hole are equal.
And e, processing a welding groove on the butt end surface of the segmented cylinder body after the alignment in the step e.
In the step f, the connecting shaft is in interference fit with the connecting shaft hole.
In the step f, the connecting shaft and the segmented cylinder body are subjected to spot welding, adjustment and full welding.
In the method, the connecting shaft and the segmented cylinder body are symmetrically welded after being fixed on the platform, and one side is turned over after welding, and the other side is welded according to the same method.
The beneficial effects of the invention are as follows: the device has simple structure and convenient manufacture and installation. The structure can fully utilize the original parts and components, and realize cost saving. The whole ultra-long blind hole structure is segmented, the single body is segmented and processed from two ends according to the through holes, the processing stroke of a machine tool is reduced, the capability of the existing machine tool can be utilized, and a special machine tool is not needed. The length of the cutter bar is reduced, the rigidity of the cutter bar is improved, and the processing is more stable. After processing, the cylinder bodies at the two ends are welded by the connecting shaft, so that the concentric effect of the cylinder bodies at the two ends is ensured, the total length of the original translation cylinder is recovered, the connecting strength of the translation cylinder is ensured, and the effect of blocking oil cavities at the two ends of the translation cylinder is also achieved. The cylinder body structure has important reference significance for processing other ultra-long blind holes, and has very broad technical popularization prospect.
Drawings
FIG. 1 is a schematic diagram of the repair structure of the present invention;
FIG. 2 is a schematic view of the structure of FIG. 1 with a first process plate and a second process plate;
FIG. 3 is a schematic diagram of the left-hand structure of FIG. 1 according to the present invention;
FIG. 4 is a schematic view of the sectional cylinder block of the present invention;
FIG. 5 is a schematic view of the structure of the connecting shaft of the present invention;
fig. 6 is a schematic structural view of an original translation cylinder of the present invention.
Marked in the figure as: the device comprises a translation cylinder 1, a water filling hole 2, a blind hole section 3, a guide sleeve hole 4, a segmented cylinder body 5, a butt end surface 6, a connecting shaft hole 7, a welding groove 8, a supporting ring 9, a connecting shaft 10, a first process plate 11 and a second process plate 12.
Detailed Description
The invention is further described below with reference to the accompanying drawings.
As shown in fig. 1 to 6, the method for repairing the translation cylinder of the forging hydraulic press comprises the following steps:
a. dividing the translation cylinder 1 into two segmented cylinder bodies 5 from the blind hole section 3, and processing a butt end surface 6 and a connecting shaft hole 7 on the blind hole section 3 of the segmented cylinder body 5;
b. the outer walls of the two ends of the segmented cylinder body 5 are respectively spot-welded with the supporting rings 9, and the outer circles of the two supporting rings 9 are processed, so that the outer circles of the two supporting rings 9 are consistent;
c. clamping the outer circle of the supporting ring 9, processing the inner wall of the water filling hole 2, turning around to process the inner wall of the other section of water filling hole 2 according to the same method, and taking down the supporting ring 9 after the processing is completed;
d. spot welding a first process plate 11 and a second process plate 12 on the side wall surface of the end of the guide sleeve hole 4 of the segmented cylinder body 5, wherein the first process plate 11 and the second process plate 12 are vertically arranged;
e. aligning and adding a first process plate 11 and a second process plate 12;
f. assembling the segmented cylinder bodies 5 and the processed connecting shafts 10, enabling two ends of the connecting shafts 10 to penetrate into the connecting shaft holes 7 of the two segmented cylinder bodies 5, and welding the connecting shafts 10 and the butt joint end faces 6 of the segmented cylinder bodies 5;
g. the first process plate 11 and the second process plate 12 are removed. As will be appreciated by those skilled in the art,
preferably, in the above method, in the step a, gas cutting is used to cut the blind hole section 3 of the translation cylinder 1 to form two segmented cylinders 5. As can be appreciated by those skilled in the art, the translation cylinder 1 is gas-cut into two sections of segmented cylinders 5 with the same size from the middle blind hole section 3, the blind hole section 3 of the segmented cylinder 5 is firstly machined, then the segmented cylinder 5 is aligned with the original water filling hole 2, the butt joint end face 6 and the hole of the segmented cylinder 5 and the connecting shaft 10 are machined, and the connecting shaft 10 is machined before the step f. And drawing a cross center line on the outer side of the cylinder body by taking the guide sleeve hole 4 and the connecting shaft hole 7 as references. Then 2 support rings 9 are sleeved on square surfaces at two ends of each segmented cylinder 5, and spot welding is carried out. And turning lathe center plugs are arranged in the guide sleeve holes 4 and the connecting shaft holes 7, and the lathe center plugs are used for machining the outer circles of 2 support rings 9 outside the cylinder body. After the central plug is removed, the outer circle of the supporting ring 9 is clamped by the lathe central frame, and the rust layer on the inner wall of the original water filling hole 2 of the cylinder body is trimmed by using a long cutter bar. Turning around to repair the rust layer at the other end of the cylinder body according to the same method. Two sides of the square surfaces at two ends of the cylinder body are respectively spot-welded with 2 process plates at 90 degrees. And aligning and processing the process plates according to the cross lines and inner holes at two ends, and ensuring that the center distances between the process plates at two sides and the cylinder holes are consistent and vertical. And then the cylinder body and the connecting shaft end are processed to form a welding groove 8. The cylinder body is assembled with the connecting shaft, the process plates on two sides of the cylinder body are adjusted to be on the same plane on the platform, the shape of the connecting shaft 10 is consistent with that of the cylinder body, and then the cylinder body and the connecting shaft are firmly welded by spot welding. Symmetrically welding after fixing on a platform, turning over one side after welding, welding the other side according to the same method, and finally removing the process plate outside the segmented cylinder 5.
Because only the translation cylinder 1 is required to be cut into two segmented cylinder bodies 5, and in consideration of processing cost, the method preferably adopts gas cutting to cut the blind hole section 3 of the translation cylinder 1 to form the two segmented cylinder bodies 5, ensures that the segmented cylinder bodies 5 have the same size, is convenient for processing the two segmented cylinder bodies 5 by adopting the same processing mode in the later stage, and reduces the adjustment times of processing parameters.
Preferably, before the supporting ring 9 is arranged in the step b in the method, the cross center line should be drawn on the outer side of the segmented cylinder 5 according to the guide sleeve hole 4 and the connecting shaft hole 7. It will be appreciated by those skilled in the art that for alignment of the first and second process plates 11, 12, the method preferably includes scoring the cross-shaped centerline outside the segmented cylinder 5 based on the pilot sleeve bore 4 and the connecting shaft bore 7 prior to positioning the backup ring 9.
Preferably, in the above method, both steps b and c are performed by lathe; after the guide sleeve hole 4 and the connecting shaft hole 7 are provided with lathe center plugs, the outer circle of the outer supporting ring 9 of the segmented cylinder body 5 is processed by the lathe center plugs; after the central plug is removed, the outer circle of the supporting ring 9 is clamped by the lathe central frame, and the inner wall of the water filling hole 2 is processed by a long cutter bar. It will be appreciated by those skilled in the art that the method preferably uses lathe work in both steps b and c; and simultaneously, the outer circle of the supporting ring 9 is directly machined through a member of a lathe. In the concrete operation, after the guide sleeve hole 4 and the connecting shaft hole 7 are provided with lathe center plugs, the lathe center plugs the outer circles of the outer supporting rings 9 of the segmented cylinder 5; after the central plug is removed, the outer circle of the supporting ring 9 is clamped by the lathe central frame, and the inner wall of the water filling hole 2 is processed by a long cutter bar.
Preferably, in the above method, the cross section of the translation cylinder 1 is square, and the connecting shaft 10 is of a cross structure with a large middle and small two ends, and the middle of the connecting shaft 10 is the same as the translation cylinder 1 in shape. It will be appreciated by those skilled in the art that, in order to facilitate alignment and positioning of the first process plate 11 and the second process plate 12, it is preferable that the cross section of the translation cylinder 1 is square, and the connecting shaft 10 is in a cross structure with a large middle and a small two ends, and the middle of the connecting shaft 10 is identical to the shape of the translation cylinder 1, so that the first process plate 11 and the second process plate 12 are vertically disposed on two adjacent side walls.
Preferably, in the step e of the method, the first process plate 11 and the second process plate 12 are aligned and added according to the cross line, the guide sleeve hole 4 and the connecting shaft hole 7, so that the center distances from the first process plate 11 and the second process plate 12 to the guide sleeve hole 4 and the connecting shaft hole 7 are equal. It will be understood by those skilled in the art that, when the segmented cylinder 5 is welded to the connecting shaft 10, in order to ensure that the segmented cylinder 5 and the connecting shaft 10 are coaxially arranged, and in order to improve the welding accuracy, the first process plate 11 and the second process plate 12 are aligned and added according to the cross line, the guide sleeve hole 4 and the connecting shaft hole 7, so that the center distances from the first process plate 11 and the second process plate 12 to the guide sleeve hole 4 and the connecting shaft hole 7 are equal.
Preferably, in the above method, the welding groove 8 is machined on the butt end surface 6 of the segmented cylinder 5 after the alignment in step e is completed. It can be understood by those skilled in the art that the welding groove 8 is preferably formed on the butt end surface 6 of the segmented cylinder 5 after the alignment is finished in order to dry-stir-fry the welding positioning of the segmented cylinder 5 and the connecting shaft 10, so as to facilitate the positioning of the welding wire or the welding rod.
Preferably, in the above method, the connecting shaft 10 is in interference fit with the connecting shaft hole 7 in the step f. It will be appreciated by those skilled in the art that in order to ensure that the segmented cylinder 5 is coaxial with the connecting shaft 10 after the connecting shaft 10 has been threaded into the connecting shaft bore 7, the method preferably involves an interference fit of the connecting shaft 10 with the connecting shaft bore 7.
Preferably, in the above method, in the step f, the connecting shaft 10 and the segmented cylinder 5 should be spot-welded first, and then fully welded after adjustment. It will be appreciated by those skilled in the art that in order to ensure weld quality while avoiding weld distortion, the method preferably involves spot welding the connecting shaft 10 to the segmented cylinder 5, and adjusting and then fully welding.
Preferably, in the above method, the connecting shaft 10 and the segmented cylinder 5 are symmetrically welded after being fixed on the platform, and one side is turned over after the welding, and the other side is welded according to the same method. It can be understood by those skilled in the art that in order to ensure the welding quality, and the connecting shaft 10 and the segmented cylinder 5 are coaxially arranged after welding, so as to avoid deformation of the segmented cylinder 5 and the connecting shaft 10 caused by welding, the method preferably comprises symmetrically welding the connecting shaft 10 and the segmented cylinder 5 after fixing on a platform, turning over one side after welding, and welding the other side according to the same method.
Claims (10)
1. The repairing method for the translation cylinder of the forging hydraulic press is characterized by comprising the following steps:
a. dividing the translation cylinder (1) into two segmented cylinder bodies (5) from the blind hole section (3), and processing a butt joint end face (6) and a connecting shaft hole (7) on the blind hole section (3) of the segmented cylinder bodies (5);
b. the outer walls of the two ends of the segmented cylinder body (5) are respectively spot welded with the supporting rings (9), and the outer circles of the two supporting rings (9) are processed, so that the outer circles of the two supporting rings (9) are consistent;
c. clamping the outer circle of the supporting ring (9), processing the inner wall of the water filling hole (2), turning around to process the inner wall of the other section of water filling hole (2) according to the same method, and taking down the supporting ring (9) after the processing is finished;
d. spot welding a first process plate (11) and a second process plate (12) on the side wall surface of the end of the guide sleeve hole (4) of the segmented cylinder body (5), wherein the first process plate (11) and the second process plate (12) are vertically arranged;
e. aligning and adding a first process plate (11) and a second process plate (12);
f. assembling the segmented cylinder bodies (5) and the processed connecting shafts (10) so that two ends of the connecting shafts (10) penetrate into the connecting shaft holes (7) of the two segmented cylinder bodies (5), and welding the connecting shafts (10) and the butt joint end faces (6) of the segmented cylinder bodies (5);
g. the first process plate (11) and the second process plate (12) are removed.
2. The method for repairing the translation cylinder of the forging hydraulic press according to claim 1, wherein the method comprises the following steps: in the step a, a blind hole section (3) of the translation cylinder (1) is cut by gas cutting to form two segmented cylinder bodies (5).
3. The method for repairing the translation cylinder of the forging hydraulic press according to claim 1, wherein the method comprises the following steps: before the supporting ring (9) is arranged in the step b, a cross center line is drawn on the outer side of the segmented cylinder body (5) according to the guide sleeve hole (4) and the connecting shaft hole (7).
4. The method for repairing the translation cylinder of the forging hydraulic press according to claim 1, wherein the method comprises the following steps: the steps b and c are processed by a lathe; after the guide sleeve hole (4) and the connecting shaft hole (7) are provided with lathe center plugs, the lathe center plugs the outer circle of the outer supporting ring (9) of the segmented cylinder body (5); after the central plug is removed, the lathe central frame clamps the outer circle of the supporting ring (9), and the inner wall of the water filling hole (2) is processed by a long cutter bar.
5. The method for repairing the translation cylinder of the forging hydraulic press according to claim 1, wherein the method comprises the following steps: the section of the translation cylinder (1) is of a square structure, the connecting shaft (10) is of a cross-shaped structure with large middle and small two ends, and the middle part of the connecting shaft (10) is identical to the translation cylinder (1) in shape.
6. The method for repairing the translation cylinder of the forging hydraulic press according to claim 1, wherein the method comprises the following steps: in the step e, aligning and adding the first process plate (11) and the second process plate (12) according to the cross line, the guide sleeve hole (4) and the connecting shaft hole (7), and ensuring that the center distances from the first process plate (11) and the second process plate (12) to the guide sleeve hole (4) and the connecting shaft hole (7) are equal.
7. The method for repairing the translation cylinder of the forging hydraulic press according to claim 1, wherein the method comprises the following steps: and e, processing a welding groove (8) on the butt end surface (6) of the segmented cylinder body (5) after alignment is completed.
8. The method for repairing the translation cylinder of the forging hydraulic press according to claim 1, wherein the method comprises the following steps: in the step f, the connecting shaft (10) is in interference fit with the connecting shaft hole (7).
9. The method for repairing the translation cylinder of the forging hydraulic press according to claim 1, wherein the method comprises the following steps: in the step f, the connecting shaft (10) and the segmented cylinder body (5) are subjected to spot welding, adjustment and full welding.
10. The method for repairing the translation cylinder of the forging hydraulic press according to claim 9, wherein: and f, symmetrically welding after the connecting shaft (10) and the segmented cylinder body (5) are fixed on a platform, and welding the other part by turning over after the welding is finished according to the same method.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111161942.4A CN114260642B (en) | 2021-09-30 | 2021-09-30 | Repairing method for translation cylinder of forging hydraulic press |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111161942.4A CN114260642B (en) | 2021-09-30 | 2021-09-30 | Repairing method for translation cylinder of forging hydraulic press |
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| Publication Number | Publication Date |
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| CN114260642A CN114260642A (en) | 2022-04-01 |
| CN114260642B true CN114260642B (en) | 2023-12-19 |
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| GB8707108D0 (en) * | 1986-05-10 | 1987-04-29 | Recker Finanz & Verwalt Gmbh | Reconditioning cylindrical parts |
| RU2069138C1 (en) * | 1994-03-29 | 1996-11-20 | Фасхетдин Низаметдинович Тавлыбаев | Method of reconditioning of pistons |
| DE10336589B3 (en) * | 2003-08-08 | 2005-05-19 | Daimlerchrysler Ag | Repair method for carrier structure, e.g. frame construction of automobile body, has replacement profile section for damaged profile section joined to original profile section via cold-joining method |
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| KR20160123737A (en) * | 2015-04-17 | 2016-10-26 | 와이.엘산업주식회사 | Laundry drying Apparatus |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7438324B2 (en) * | 2003-06-30 | 2008-10-21 | Keiper Michael C | Method and components for repairing broken conduit extending from concrete foundations |
-
2021
- 2021-09-30 CN CN202111161942.4A patent/CN114260642B/en active Active
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|---|---|---|---|---|
| GB8707108D0 (en) * | 1986-05-10 | 1987-04-29 | Recker Finanz & Verwalt Gmbh | Reconditioning cylindrical parts |
| RU2069138C1 (en) * | 1994-03-29 | 1996-11-20 | Фасхетдин Низаметдинович Тавлыбаев | Method of reconditioning of pistons |
| DE10336589B3 (en) * | 2003-08-08 | 2005-05-19 | Daimlerchrysler Ag | Repair method for carrier structure, e.g. frame construction of automobile body, has replacement profile section for damaged profile section joined to original profile section via cold-joining method |
| CN103537848A (en) * | 2013-10-25 | 2014-01-29 | 陕西天元材料保护科技有限公司 | Large-diameter hydraulic cylinder body repairing and remanufacturing system and method |
| KR20160123737A (en) * | 2015-04-17 | 2016-10-26 | 와이.엘산업주식회사 | Laundry drying Apparatus |
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| Title |
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| 大型油缸的修复工艺;闫晓春;;煤炭技术(第10期);第130-131页 * |
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