CN202207724U - Thin-wall metal pipe depression repairing device - Google Patents
Thin-wall metal pipe depression repairing device Download PDFInfo
- Publication number
- CN202207724U CN202207724U CN 201120322741 CN201120322741U CN202207724U CN 202207724 U CN202207724 U CN 202207724U CN 201120322741 CN201120322741 CN 201120322741 CN 201120322741 U CN201120322741 U CN 201120322741U CN 202207724 U CN202207724 U CN 202207724U
- Authority
- CN
- China
- Prior art keywords
- conical ring
- thin
- wall metal
- pusher tube
- screw rod
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
- 239000002184 metal Substances 0.000 title claims abstract description 44
- 210000001503 joint Anatomy 0.000 claims abstract description 6
- 238000002224 dissection Methods 0.000 claims description 35
- 230000003292 diminished effect Effects 0.000 claims description 23
- 241000239290 Araneae Species 0.000 claims description 19
- 230000000694 effects Effects 0.000 abstract description 3
- 238000000034 method Methods 0.000 description 7
- 239000000463 material Substances 0.000 description 4
- 238000000137 annealing Methods 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 239000004677 Nylon Substances 0.000 description 2
- 230000007812 deficiency Effects 0.000 description 2
- 229920001778 nylon Polymers 0.000 description 2
- 238000011084 recovery Methods 0.000 description 2
- 239000002699 waste material Substances 0.000 description 2
- 230000002950 deficient Effects 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 238000001953 recrystallisation Methods 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
- 238000005482 strain hardening Methods 0.000 description 1
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Abstract
The utility model discloses a thin-wall metal pipe sunken repairing device, which comprises a screw rod, wherein one end of the screw rod is provided with a thread, and the end part of the other end of the screw rod is fixedly connected with an operating handle I; the bearing support is arranged close to the first operating handle, the push rod pipe is arranged close to the bearing, and the split type conical ring is arranged close to the push rod pipe; the split conical ring is formed by butt joint of an upper semi-conical ring and a lower semi-conical ring which have the same structure, the inner contour of the split conical ring is matched with the outer contour of the conical shaft, and the outer contour of the split conical ring is cylindrical and the outer diameter of the split conical ring is smaller than the inner diameter of the thin-wall metal pipe. The utility model discloses simple structure, novel in design is reasonable, uses the simple operation, and work efficiency is high, realizes with low costs, excellent in use effect, convenient to popularize and use.
Description
Technical field
The utility model belongs to the thin-wall metal tube processing technique field, especially relates to a kind of thin-wall metal tube depression prosthetic device.
Background technology
Thin-walled (ratio of pipe diameter and wall thickness >=20) metal pipe material is in process, because the external pressure that can bear is less, caving in easily in the surface, causes whole tubing to scrap, and the finished material rate is lower.Cause the concrete reason of tube surfaces depression that the following aspects is arranged:
1, tubing is after processing, because work hardening generally will be carried out recrystallization annealing or stress relief annealing; In annealing process; If too much perhaps the backing plate of bottom is very few for the number of plies of stacking, bottom tubing and backing plate contact position have bigger stress, can on the tubing of bottom, form load mould.
2, tubing generally is that cuttolength uses, and the device that gets stuck during Pipe Cutting can cause tubing contact position pressure too big if exist seamed edge perhaps not fit like a glove with tube outer diameter, forms load mould.
Generally will carry out hydraulic pressure and airtight check when 3, the tubing finished product is paid, the device that gets stuck during check also can cause tubing contact position pressure too big if exist seamed edge perhaps not fit like a glove with tube outer diameter, forms load mould.
The method that solves thin-wall pipes load mould problem at present is few, though the method that has can solve, efficient is lower, and cost is higher.The acceptance only if the client gives way, otherwise the thin-wall metal tube that occurs behind the load mould in most cases all can be scrapped processing, has caused the waste of material.
The utility model content
The utility model technical problem to be solved is to above-mentioned deficiency of the prior art, and a kind of thin-wall metal tube depression prosthetic device is provided, and it is simple in structure; Novel and reasonable design is used simple operation, high efficiency; The realization cost is low, and result of use is good, is convenient to promote the use of.
For solving the problems of the technologies described above; The technical scheme that the utility model adopts is: a kind of thin-wall metal tube depression prosthetic device; It is characterized in that: comprise that an end is provided with the screw rod that screw thread, other end end are fixedly connected with operating grip one; To being set, a threaded end is socketed with bearing spider and pusher tube and the diminished shaft that has been threaded from an end that is fixedly connected with operating grip one successively on the said screw rod; On the said bearing spider bearing is installed, the end near bearing on the said pusher tube is fixedly connected with operating grip two, is socketed with the dissection type conical ring on the said diminished shaft; Said bearing spider is adjacent to operating grip one setting, and said pusher tube is adjacent to the bearing setting, and said dissection type conical ring is adjacent to the pusher tube setting; Said dissection type conical ring is formed with second conical ring butt joint by first identical conical ring of structure; The interior profile of said dissection type conical ring matches with the outline of diminished shaft, the outline of said dissection type conical ring be cylindric and external diameter less than the internal diameter of thin-wall metal tube; The internal diameter of said pusher tube is greater than the external diameter of diminished shaft near pusher tube one end, and the external diameter of said pusher tube is less than the external diameter of dissection type conical ring.
Above-mentioned thin-wall metal tube depression prosthetic device, it is characterized in that: the internal diameter of said bearing spider is than the big 0.2mm～0.5mm of external diameter of screw rod.
Above-mentioned thin-wall metal tube depression prosthetic device, it is characterized in that: the internal diameter of said pusher tube is than the big 1mm～2mm of external diameter of screw rod.
Above-mentioned thin-wall metal tube depression prosthetic device, it is characterized in that: the internal diameter of said pusher tube is than the external diameter big 0.2mm～0.5mm of diminished shaft near pusher tube one end.
Above-mentioned thin-wall metal tube depression prosthetic device, it is characterized in that: the external diameter of said dissection type conical ring is than the little 0.3mm～0.7mm of internal diameter of thin-wall metal tube.
The utility model compared with prior art has the following advantages:
1, the utility model is provided with the screw rod that screw thread, other end end are fixedly connected with operating grip one by an end; Be socketed in bearing spider and pusher tube on the screw rod; Be threaded in the diminished shaft on the screw rod, be installed in the bearing on the bearing spider, be fixedly connected on the operating grip two on the pusher tube; And the dissection type conical ring that is socketed on the diminished shaft constitutes simple in structure and novel and reasonable design.
2, the assembling of the utility model is simple, during use, the assembly that assembles is gone into the endoporus of thin-wall metal tube and is made the dissection type conical ring just in time be positioned at the recess of thin-wall metal tube from an end plug that is provided with the dissection type conical ring; Rotating operating handle one, operating grip one drives screw rod and rotates, under the effect of screw thread; Make diminished shaft along moving axially, first conical ring of butt joint opens with second conical ring gradually, makes the recess of thin-wall metal tube expand flat; Knock the metal of depression around the position with nylon rod again, make the thin-wall metal tube recovery of shape, then rotating operating handle one in the opposite direction; From thin-wall metal tube, pull out this thin-wall metal tube depression prosthetic device; Prepare next thin-wall metal tube, use simple operation, high efficiency.
3, the utility model end near bearing on said pusher tube has been fixedly connected operating grip two; In beginning rotating operating handle one; To pull operating grip two and firmly with hand to the direction opposite with rotating operating handle one; Prevent the rotation of pusher tube and dissection type conical ring, further improved operating efficiency.
4, the realization cost of the utility model is low, and result of use is good, is convenient to promote the use of.
In sum, the utility model is simple in structure, novel and reasonable design; Use simple operation, high efficiency realizes that cost is low; The efficient that has solved existing in prior technology solution thin-wall pipes load mould problem is lower, and cost is higher, causes the defective and the deficiency of waste of material; Result of use is good, is convenient to promote the use of.
Through accompanying drawing and embodiment, the technical scheme of the utility model is done further detailed description below.
Description of drawings
Fig. 1 is the structural representation of the utility model.
Fig. 2 is the structural representation of the utility model dissection type conical ring.
Description of reference numerals:
The 1-screw rod; The 1-1-screw thread; 2-operating grip one;
The 3-bearing spider; The 4-pusher tube; The 5-diminished shaft;
The 6-bearing; 7-operating grip two; 8-dissection type conical ring;
First conical ring of 8-1-; Second conical ring of 8-2-; The 9-thin-wall metal tube.
The specific embodiment
As depicted in figs. 1 and 2; The utility model comprises that an end is provided with the screw rod 1 that screw thread 1-1, other end end are fixedly connected with operating grip 1; Be socketed with bearing spider 3 and the pusher tube 4 and the diminished shaft 5 that has been threaded from an end that is fixedly connected with operating grip 1 successively to an end that is provided with screw thread 1-1 on the said screw rod 1; On the said bearing spider 3 bearing 6 is installed; End near bearing 6 on the said pusher tube 4 is fixedly connected with operating grip 27, is socketed with dissection type conical ring 8 on the said diminished shaft 5; Said bearing spider 3 is adjacent to operating grip 1 and is provided with, and said pusher tube 4 is adjacent to bearing 6 and is provided with, and said dissection type conical ring 8 is adjacent to pusher tube 4 and is provided with; Butt joint forms said dissection type conical ring 8 with second conical ring 8-2 by identical first conical ring 8-1 of structure; The interior profile of said dissection type conical ring 8 matches with the outline of diminished shaft 5, the outline of said dissection type conical ring 8 be cylindric and external diameter less than the internal diameter of thin-wall metal tube 9; The internal diameter of said pusher tube 4 is greater than the external diameter of diminished shaft 5 near pusher tube 4 one ends, and the external diameter of said pusher tube 4 is less than the external diameter of dissection type conical ring 8.
As depicted in figs. 1 and 2, in the present embodiment, the internal diameter of said bearing spider 3 is than the big 0.2mm～0.5mm of external diameter of screw rod 1.The internal diameter of said pusher tube 4 is than the big 1mm～2mm of external diameter of screw rod 1.The internal diameter of said pusher tube 4 is than the external diameter big 0.2mm～0.5mm of diminished shaft 5 near pusher tube 4 one ends.The external diameter of said dissection type conical ring 8 is than the little 0.3mm～0.7mm of internal diameter of thin-wall metal tube 9.Preferably, the internal diameter of said bearing spider 3 is than the big 0.35mm of external diameter of screw rod 1.The internal diameter of said pusher tube 4 is than the big 1.5mm of external diameter of screw rod 1.The internal diameter of said pusher tube 4 is than the external diameter big 0.35mm of diminished shaft 5 near pusher tube 4 one ends.The external diameter of said dissection type conical ring 8 is than the little 0.5mm of internal diameter of thin-wall metal tube 9.
The concrete use of the utility model is: at first operating grip 1 is welded on the end end that screw thread 1-1 is not set on the screw rod 1, operating grip 27 is welded on the pusher tube 4; Then be socketed in bearing spider 3 on the screw rod 1 and make bearing spider 3 be adjacent to operating grip 1, bearing 6 is installed on the bearing spider 3, pusher tube 4 is socketed on the screw rod 1 and makes pusher tube 4 be adjacent to bearing 6; Then diminished shaft 5 is threaded on the screw rod 1, first conical ring 8-1 with dissection type conical ring 8 is set on the diminished shaft 5 with second conical ring 8-2, makes first conical ring 8-1 and second conical ring 8-2 dock and makes dissection type conical ring 8 be adjacent to pusher tube 4 again.At last the assembly that assembles is gone into the endoporus of thin-wall metal tube 9 and made dissection type conical ring 8 just in time be positioned at the recess of thin-wall metal tube 9 from an end plug that is provided with dissection type conical ring 8; Rotating operating handle 1; Operating grip 1 drives screw rod 1 and rotates, and under the effect of screw thread 1-1, makes diminished shaft 5 along moving axially; Because dissection type conical ring 8 is by first conical ring 8-1 two halves split type structure that butt joint forms with second conical ring 8-2; So first conical ring 8-1 that docks and second conical ring 8-2 open gradually, make the recess of thin-wall metal tube 9 bloated flat, knock depression position metal on every side with nylon rod again; Make thin-wall metal tube 9 recovery of shape; Rotating operating handle 1 is in the opposite direction pulled out this thin-wall metal tube depression prosthetic device from thin-wall metal tube 9 then, prepares next thin-wall metal tube 9.
In addition; Move up at upper and lower in order to ensure 8 of dissection type conical rings and do not rotate and guarantee that pusher tube 4 does not rotate along with the rotation of diminished shaft 5; End near bearing 6 on said pusher tube 4 has welded operating grip 27, in beginning rotating operating handle 1, pull operating grip 27 and to the directions opposite with rotating operating handle 1 firmly with hand; Prevent the rotation of pusher tube 4 and dissection type conical ring 8, improved operating efficiency.
In sum, the method that the utility model adopts endoporus to expand is at the thin-wall metal tube 9 inner strong points that form; Adopt simple rolling method to make it to restore at the depression position then, simple in structure, novel and reasonable design; Use simple operation, high efficiency realizes that cost is low; Result of use is good, is convenient to promote the use of.
The above; It only is the preferred embodiment of the utility model; Be not that the utility model is done any restriction; Everyly any simple modification that above embodiment did, change and equivalent structure are changed, all still belong in the protection domain of the utility model technical scheme according to the utility model technical spirit.
Claims (5)
1. thin-wall metal tube depression prosthetic device; It is characterized in that: comprise that an end is provided with the screw rod (1) that screw thread (1-1), other end end are fixedly connected with operating grip one (2); Said screw rod (1) is gone up and is socketed with bearing spider (3) and pusher tube (4) and the diminished shaft that has been threaded (5) from an end that is fixedly connected with operating grip one (2) successively to an end that is provided with screw thread (1-1); Bearing (6) is installed on the said bearing spider (3); The end that said pusher tube (4) goes up near bearing (6) is fixedly connected with operating grip two (7), is socketed with dissection type conical ring (8) on the said diminished shaft (5); Said bearing spider (3) is adjacent to operating grip one (2) and is provided with, and said pusher tube (4) is adjacent to bearing (6) setting, and said dissection type conical ring (8) is adjacent to pusher tube (4) setting; Said dissection type conical ring (8) is formed by structure identical first conical ring (8-1) and second conical ring (8-2) butt joint; The interior profile of said dissection type conical ring (8) matches with the outline of diminished shaft (5), the outline of said dissection type conical ring (8) be cylindric and external diameter less than the internal diameter of thin-wall metal tube (9); The internal diameter of said pusher tube (4) is greater than the external diameter of diminished shaft (5) near pusher tube (4) one ends, and the external diameter of said pusher tube (4) is less than the external diameter of dissection type conical ring (8).
2. according to the described thin-wall metal tube depression of claim 1 prosthetic device, it is characterized in that: the internal diameter of said bearing spider (3) is than the big 0.2mm～0.5mm of external diameter of screw rod (1).
3. according to the described thin-wall metal tube depression of claim 1 prosthetic device, it is characterized in that: the internal diameter of said pusher tube (4) is than the big 1mm～2mm of external diameter of screw rod (1).
4. according to claim 1 or 3 described thin-wall metal tube depression prosthetic devices, it is characterized in that: the internal diameter of said pusher tube (4) is than the external diameter big 0.2mm～0.5mm of diminished shaft (5) near pusher tube (4) one ends.
5. according to the described thin-wall metal tube depression of claim 1 prosthetic device, it is characterized in that: the external diameter of said dissection type conical ring (8) is than the little 0.3mm～0.7mm of internal diameter of thin-wall metal tube (9).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201120322741 CN202207724U (en) | 2011-08-31 | 2011-08-31 | Thin-wall metal pipe depression repairing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201120322741 CN202207724U (en) | 2011-08-31 | 2011-08-31 | Thin-wall metal pipe depression repairing device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202207724U true CN202207724U (en) | 2012-05-02 |
Family
ID=45987280
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201120322741 Expired - Lifetime CN202207724U (en) | 2011-08-31 | 2011-08-31 | Thin-wall metal pipe depression repairing device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202207724U (en) |
Cited By (21)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103706678A (en) * | 2012-09-30 | 2014-04-09 | 天太·郭元焜 | Deformed Nozzle Repair Machine |
| CN104324983A (en) * | 2014-11-14 | 2015-02-04 | 中国石油集团渤海石油装备制造有限公司 | Steel pipe diameter repairing device |
| CN104416057A (en) * | 2013-09-07 | 2015-03-18 | 内蒙古航天红岗机械有限公司 | Tapered thermal expansion reshaping mould |
| CN104772369A (en) * | 2015-04-27 | 2015-07-15 | 桂林市啄木鸟医疗器械有限公司 | Maintenance tool for dental handpiece |
| CN105268779A (en) * | 2015-11-24 | 2016-01-27 | 哈尔滨工业大学 | Accurate control device and method for inner diameter size of titanium alloy barrel cone composite component |
| CN105499324A (en) * | 2016-01-13 | 2016-04-20 | 中石化石油工程技术服务有限公司 | Steel tube opening roundness restoring device and using method thereof |
| CN106079491A (en) * | 2016-06-17 | 2016-11-09 | 国网河南省电力公司南阳供电公司 | One shrivels cable duct bank prosthetic device |
| CN106180280A (en) * | 2016-08-31 | 2016-12-07 | 中国重型机械研究院股份公司 | A kind of for heavy caliber seamless steel pipe end diameter-setting equipment and method |
| CN106216444A (en) * | 2016-08-31 | 2016-12-14 | 中国重型机械研究院股份公司 | A kind of for seamless steel pipe end internal-and external diameter diameter-setting equipment |
| CN106391764A (en) * | 2016-10-11 | 2017-02-15 | 西南石油大学 | Axial ploughing type intra-pipe reshaper |
| CN106424347A (en) * | 2016-05-27 | 2017-02-22 | 镇江市恒源汽车零部件有限公司 | Rounding and sizing processing mould for pipe fittings |
| CN106475441A (en) * | 2016-10-11 | 2017-03-08 | 西南石油大学 | A kind of multistage bracing type pipeline trimmer |
| CN106475442A (en) * | 2016-10-11 | 2017-03-08 | 西南石油大学 | A kind of rotatable tubing machine with roller |
| CN106493194A (en) * | 2016-10-11 | 2017-03-15 | 西南石油大学 | A kind of Jackstay type indent pipeline rehabilitation machine |
| CN107654790A (en) * | 2017-06-28 | 2018-02-02 | 沪东中华造船(集团)有限公司 | A kind of metal pipe-wall depression repairs frock and its application method |
| CN108161331A (en) * | 2017-12-27 | 2018-06-15 | 安徽应流航源动力科技有限公司 | A kind of welding Rework Technics method of ZG1Cr11Ni2WMoV large sizes casing casting |
| WO2019030374A1 (en) * | 2017-08-11 | 2019-02-14 | Axtone S.A | Articulated coupling, conical threaded ring, method for the production of a mounting of a cutting tool which mounting can disengage when overloaded, as well as a method for energy conversion by means of an articulated coupling |
| CN109604388A (en) * | 2018-11-23 | 2019-04-12 | 中国航空工业集团公司沈阳飞机设计研究所 | Pipeline injury repair equipment |
| CN112387813A (en) * | 2020-10-28 | 2021-02-23 | 高海燕 | Aluminum alloy indent tubular product prosthetic devices |
| CN115106571A (en) * | 2022-08-22 | 2022-09-27 | 兴化市兴东铸钢有限公司 | Pipe inclined hole drilling device |
| CN115945550A (en) * | 2023-03-09 | 2023-04-11 | 成都国营锦江机器厂 | Pit repairing device and method for catheter with outer aperture smaller than inner aperture |
-
2011
- 2011-08-31 CN CN 201120322741 patent/CN202207724U/en not_active Expired - Lifetime
Cited By (28)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103706678A (en) * | 2012-09-30 | 2014-04-09 | 天太·郭元焜 | Deformed Nozzle Repair Machine |
| CN104416057A (en) * | 2013-09-07 | 2015-03-18 | 内蒙古航天红岗机械有限公司 | Tapered thermal expansion reshaping mould |
| CN104324983A (en) * | 2014-11-14 | 2015-02-04 | 中国石油集团渤海石油装备制造有限公司 | Steel pipe diameter repairing device |
| CN104772369A (en) * | 2015-04-27 | 2015-07-15 | 桂林市啄木鸟医疗器械有限公司 | Maintenance tool for dental handpiece |
| CN105268779A (en) * | 2015-11-24 | 2016-01-27 | 哈尔滨工业大学 | Accurate control device and method for inner diameter size of titanium alloy barrel cone composite component |
| CN105499324A (en) * | 2016-01-13 | 2016-04-20 | 中石化石油工程技术服务有限公司 | Steel tube opening roundness restoring device and using method thereof |
| CN106424347A (en) * | 2016-05-27 | 2017-02-22 | 镇江市恒源汽车零部件有限公司 | Rounding and sizing processing mould for pipe fittings |
| CN106079491A (en) * | 2016-06-17 | 2016-11-09 | 国网河南省电力公司南阳供电公司 | One shrivels cable duct bank prosthetic device |
| CN106079491B (en) * | 2016-06-17 | 2018-06-19 | 国网河南省电力公司南阳供电公司 | One kind shrivels cable duct bank prosthetic device |
| CN106216444A (en) * | 2016-08-31 | 2016-12-14 | 中国重型机械研究院股份公司 | A kind of for seamless steel pipe end internal-and external diameter diameter-setting equipment |
| CN106180280A (en) * | 2016-08-31 | 2016-12-07 | 中国重型机械研究院股份公司 | A kind of for heavy caliber seamless steel pipe end diameter-setting equipment and method |
| CN106216444B (en) * | 2016-08-31 | 2018-05-22 | 中国重型机械研究院股份公司 | One kind is used for seamless steel pipe end internal-and external diameter diameter-setting equipment |
| CN106180280B (en) * | 2016-08-31 | 2018-03-13 | 中国重型机械研究院股份公司 | One kind is used for heavy caliber seamless steel pipe end sizing method |
| CN106391764B (en) * | 2016-10-11 | 2017-12-01 | 西南石油大学 | It is a kind of axially to plough into reshaper in formula pipe |
| CN106391764A (en) * | 2016-10-11 | 2017-02-15 | 西南石油大学 | Axial ploughing type intra-pipe reshaper |
| CN106475442B (en) * | 2016-10-11 | 2018-01-16 | 西南石油大学 | A kind of rotatable tubing machine with roller |
| CN106493194A (en) * | 2016-10-11 | 2017-03-15 | 西南石油大学 | A kind of Jackstay type indent pipeline rehabilitation machine |
| CN106475442A (en) * | 2016-10-11 | 2017-03-08 | 西南石油大学 | A kind of rotatable tubing machine with roller |
| CN106475441A (en) * | 2016-10-11 | 2017-03-08 | 西南石油大学 | A kind of multistage bracing type pipeline trimmer |
| CN107654790A (en) * | 2017-06-28 | 2018-02-02 | 沪东中华造船(集团)有限公司 | A kind of metal pipe-wall depression repairs frock and its application method |
| WO2019030374A1 (en) * | 2017-08-11 | 2019-02-14 | Axtone S.A | Articulated coupling, conical threaded ring, method for the production of a mounting of a cutting tool which mounting can disengage when overloaded, as well as a method for energy conversion by means of an articulated coupling |
| US11535285B2 (en) | 2017-08-11 | 2022-12-27 | Axtone S.A. | Articulated coupling, conical threaded ring, method for the production of a mounting of a cutting tool which mounting can disengage when overloaded, as well as a method for energy conversion by means of an articulated coupling |
| CN108161331A (en) * | 2017-12-27 | 2018-06-15 | 安徽应流航源动力科技有限公司 | A kind of welding Rework Technics method of ZG1Cr11Ni2WMoV large sizes casing casting |
| CN109604388A (en) * | 2018-11-23 | 2019-04-12 | 中国航空工业集团公司沈阳飞机设计研究所 | Pipeline injury repair equipment |
| CN112387813A (en) * | 2020-10-28 | 2021-02-23 | 高海燕 | Aluminum alloy indent tubular product prosthetic devices |
| CN112387813B (en) * | 2020-10-28 | 2022-11-15 | 黑龙江汉威铜雕文化产业发展有限责任公司 | Aluminum alloy indent tubular product prosthetic devices |
| CN115106571A (en) * | 2022-08-22 | 2022-09-27 | 兴化市兴东铸钢有限公司 | Pipe inclined hole drilling device |
| CN115945550A (en) * | 2023-03-09 | 2023-04-11 | 成都国营锦江机器厂 | Pit repairing device and method for catheter with outer aperture smaller than inner aperture |
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