CN212247212U - Hydrogen embrittlement prevention phosphating production line for high-strength bolt - Google Patents
Hydrogen embrittlement prevention phosphating production line for high-strength bolt Download PDFInfo
- Publication number
- CN212247212U CN212247212U CN202020886668.1U CN202020886668U CN212247212U CN 212247212 U CN212247212 U CN 212247212U CN 202020886668 U CN202020886668 U CN 202020886668U CN 212247212 U CN212247212 U CN 212247212U
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- fixedly connected
- wall
- production line
- hydrogen embrittlement
- phosphating
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- Expired - Fee Related
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- 229910052739 hydrogen Inorganic materials 0.000 title claims abstract description 42
- 239000001257 hydrogen Substances 0.000 title claims abstract description 42
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 title claims abstract description 39
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 32
- 230000002265 prevention Effects 0.000 title claims description 27
- 238000010438 heat treatment Methods 0.000 claims abstract description 23
- 238000009713 electroplating Methods 0.000 claims abstract description 20
- 238000005554 pickling Methods 0.000 claims abstract description 20
- 238000004140 cleaning Methods 0.000 claims description 13
- 238000005096 rolling process Methods 0.000 claims description 11
- 238000007789 sealing Methods 0.000 claims description 8
- 230000003028 elevating effect Effects 0.000 abstract description 7
- 238000005406 washing Methods 0.000 abstract description 5
- 239000011148 porous material Substances 0.000 abstract description 4
- 230000010354 integration Effects 0.000 abstract description 2
- 235000017166 Bambusa arundinacea Nutrition 0.000 description 6
- 235000017491 Bambusa tulda Nutrition 0.000 description 6
- 241001330002 Bambuseae Species 0.000 description 6
- 235000015334 Phyllostachys viridis Nutrition 0.000 description 6
- 239000011425 bamboo Substances 0.000 description 6
- 238000003754 machining Methods 0.000 description 5
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 4
- 239000007788 liquid Substances 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- 241001233242 Lontra Species 0.000 description 2
- 125000004435 hydrogen atom Chemical group [H]* 0.000 description 2
- 229910052742 iron Inorganic materials 0.000 description 2
- 239000011159 matrix material Substances 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 229910052751 metal Inorganic materials 0.000 description 2
- 239000002253 acid Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000000295 complement effect Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000003112 inhibitor Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000004094 surface-active agent Substances 0.000 description 1
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Abstract
The utility model relates to a high strength bolt processing equipment technical field just discloses a crisp bonderizing production line of high strength bolt anti-hydrogen, including the bottom plate, the upper surface of bottom plate fixedly connected with heating cabinet, bonderizing case, pickling case, electroplating box and washing case in proper order, the equal fixedly connected with support column of upper surface corner of bottom plate, the common fixedly connected with U-shaped backup pad of upper surface of a plurality of support columns, the through-hole has all been seted up to the both sides outer wall of U-shaped backup pad, and the first antifriction bearing of pore wall fixedly connected with of through-hole. The utility model discloses make each processing position integration of hydrogen embrittlement phosphating production line is in the same place is prevented to high strength bolt to realize automated processing through moving mechanism and elevating system, also need not make a round trip to transport the bolt work piece, labour saving and time saving has improved the efficiency of hydrogen embrittlement phosphating production line processing bolt is prevented to high strength bolt, has reduced staff's intensity simultaneously, and has ensured the quality of bolt processing.
Description
Technical Field
The utility model relates to a high strength bolt processing equipment technical field especially relates to a hydrogen embrittlement prevention bonderizing production line of high strength bolt.
Background
The bolt is widely used in various industries, and the bolt needs to bear larger pressure in the daily use process, so that the stress condition temperature of the bolt needs to be kept, the bolt has high strength, the bolt is prevented from being connected and broken due to hydrogen embrittlement in the use process, the high-strength bolt needs to be heated at high temperature in the processing process, hydrogen on a bolt workpiece can escape, the stress is fully released, and then an auxiliary material adding port is arranged on the outer surface of a phosphating box, so that the bolt workpiece can be conveniently pickled in a phosphating tank, and meanwhile, a corrosion inhibitor and a surfactant are added, so that the reaction of acid and matrix metal is slowed down, and the generation of hydrogen is reduced; on the other hand, the generated hydrogen is easy to separate from the metal surface, the chance of permeating into the matrix is reduced, and then the hydrogen enters the electroplating pool for electroplating, so that the effect of hydrogen embrittlement prevention of the bolt is ensured.
Each processing position distributes comparatively dispersedly in the brittle bonderizing production line of present high strength bolt hydrogen-proof, leads to high strength bolt course of working to make a round trip to transport, wastes time and energy, has increased staff's intensity of labour to and influence high strength bolt's machining efficiency.
SUMMERY OF THE UTILITY MODEL
The utility model aims at solving the problem that in the hydrogen embrittlement phosphating production line of prior art, each processing position distributes comparatively dispersedly, leads to high strength bolt course of working to need make a round trip to transport, wastes time and energy, has increased staff's intensity of labour to and influence high strength bolt machining efficiency, and the hydrogen embrittlement phosphating production line is prevented to a high strength bolt that proposes.
In order to achieve the above purpose, the utility model adopts the following technical scheme:
the utility model provides a hydrogen embrittlement prevention bonderizing production line of high strength bolt, includes the bottom plate, the last surface of bottom plate fixedly connected with heating cabinet, bonderizing case, pickling case, electroplating box and washing case in proper order, the equal fixedly connected with support column of the upper surface corner of bottom plate, it is a plurality of the common fixedly connected with U-shaped backup pad of upper surface of support column, the through-hole has all been seted up to the both sides outer wall of U-shaped backup pad, and the first antifriction bearing of pore wall fixedly connected with of through-hole, the inner wall fixedly connected with moving mechanism of first antifriction bearing, moving mechanism's bottom fixedly connected with T shape connecting plate, the lower fixed surface of T shape connecting plate is connected with elevating system, the last fixed surface of bottom plate is.
Preferably, the moving mechanism comprises a lead screw fixedly connected with the inner walls of the two first rolling bearings, the rod wall of the lead screw is in threaded connection with a lead screw nut, the outer wall of the lead screw nut is fixedly connected with the upper surface of the T-shaped connecting plate, the lower surface of the U-shaped supporting plate is provided with a moving through hole matched with the T-shaped connecting plate, the side wall of the U-shaped supporting plate is fixedly connected with a first driving motor, and the output end of the first driving motor is fixedly connected with the side wall of the lead screw.
Preferably, elevating system includes with T shape connecting plate lower fixed surface's second driving motor and second antifriction bearing, the inner wall fixedly connected with screw thread section of thick bamboo of second antifriction bearing, the inner wall threaded connection of screw thread section of thick bamboo has the threaded rod, the bottom fixedly connected with fixed plate of threaded rod, the lower fixed surface of fixed plate is connected with the lacing bar, a plurality of through-holes have been seted up to the outer wall of lacing bar, and the pore wall swing joint of through-hole has the couple, second driving motor's output fixedly connected with initiative helical gear, the outer wall of screw thread section of thick bamboo is fixed to have cup jointed driven helical gear, the outer wall of initiative helical gear meshes with the outer wall of driven helical gear is perpendicular.
Preferably, complementary unit includes the bellows with fixed surface is connected on the bottom plate, the inner wall fixedly connected with air-blower of bellows, the inner wall swing joint of bellows has the fender ring, the last fixed surface who keeps off the ring is connected with and filters the otter board, the fixed intercommunication of output of air-blower has the pipe, the fixed intercommunication of pipe wall of pipe has a plurality of branch pipes, the bottom mounting intercommunication of branch pipe has the check valve, and is a plurality of the output of check valve communicates with the lateral wall is fixed of adjacent bonderizing case, pickling case, electroplating tank and washing case respectively.
Preferably, the outer walls of the phosphating tank, the pickling tank, the electroplating tank and the cleaning tank are fixedly communicated with discharge valves.
Preferably, the outer wall of the baffle ring is fixedly connected with a sealing ring, and the sealing ring is made of rubber.
Preferably, the heating coil is fixedly connected to the inner wall of the heating box.
Preferably, the lower surface of the feed screw nut is fixedly connected with two rectangular rods, and the rod wall of each rectangular rod is movably sleeved with a circular tube.
Preferably, the upper surface of the fixing plate is fixedly connected with a telescopic rod, and the upper surface of the telescopic rod is fixedly connected with the lower surface of the T-shaped connecting plate.
Compared with the prior art, the utility model provides a hydrogen embrittlement prevention bonderizing production line of high strength bolt possesses following beneficial effect:
the hydrogen embrittlement prevention phosphorization production line for the high-strength bolt is characterized in that a first driving motor, a second driving motor and an air blower are arranged, a heating box, a phosphorization box, a pickling box, an electroplating box and a cleaning box are integrated together, then a screw rod is rotated through the first driving motor, the screw rod enables a screw nut to move back and forth, the screw nut enables a lifting mechanism to move to the positions above the processing positions of the heating box, the phosphorization box, the pickling box, the electroplating box and the cleaning box, when the hydrogen embrittlement prevention phosphorization of the high-strength bolt is processed, a bolt workpiece is fixed on a hook through an iron wire, then the bolt workpiece is moved to the position above the heating box through the first driving motor, then the second driving motor is started, the second driving motor enables a threaded cylinder to rotate through a driving helical gear and a driven helical gear, the threaded cylinder pushes a fixing plate to move downwards through a threaded rod, the fixing plate enables the bolt to enter the heating box through, so that the hydrogen on the bolt work piece can escape, stress is fully released, then the bolt enters into the phosphorization box in proper order, the pickling box, electroplate the incasement processing with wasing, in the bolt course of working, start the air-blower, the air-blower makes external air pass through the pipe, the phosphorization box is carried respectively to branch pipe and check valve, the pickling box, electroplate the incasement with wasing, and make the incasement liquid upset can not deposit, bolt machining's quality has been ensured, this mechanism makes each processing position integration together of hydrogen embrittlement phosphating production line is prevented to the high strength bolt, and realize automated processing through moving mechanism and elevating system, also need not make a round trip to transport the bolt work piece, and is time-saving and labor-saving, the efficiency of hydrogen embrittlement phosphating production line processing bolt is prevented to the high strength bolt has been improved, staff's intensity has been reduced simultaneously, and bolt machining's.
The device does not relate to the part and all is the same with prior art or can adopt prior art to realize, the utility model discloses make each processing position of hydrogen embrittlement prevention bonderizing production line of high strength bolt integrate together to realize automated processing through moving mechanism and elevating system, also need not make a round trip to transport the bolt work piece, labour saving and time saving has improved the efficiency of hydrogen embrittlement prevention bonderizing production line processing bolt of high strength bolt, has reduced staff's intensity simultaneously, and has ensured bolt machining's quality.
Drawings
FIG. 1 is a schematic structural view of a high-strength bolt hydrogen embrittlement prevention phosphating production line provided by the utility model;
FIG. 2 is a schematic structural view of a part A of the hydrogen embrittlement prevention phosphating production line for high-strength bolts, which is provided by the utility model;
FIG. 3 is a schematic structural view of a B part of a high-strength bolt hydrogen embrittlement prevention phosphating production line provided by the utility model;
fig. 4 is a schematic structural diagram of the C part of the hydrogen embrittlement prevention phosphating production line for high-strength bolts.
In the figure: 1 bottom plate, 2 heating box, 3 phosphating box, 4 pickling box, 5 electroplating box, 6 cleaning box, 7 moving mechanism, 71 screw rod, 72 screw rod nut, 73 moving through hole, 74 first driving motor, 8 lifting mechanism, 81 second driving motor, 82 second rolling bearing, 83 threaded cylinder, 84 threaded rod, 85 fixing plate, 86 hanging strip, 87 hook, 88 driving helical gear, 89 driven helical gear, 9 auxiliary mechanism, 91 air box, 92 air blower, 93 baffle ring, 94 filter screen plate, 95 conduit, 96 branch pipe, 97 one-way valve, 10 supporting column, 11U-shaped supporting plate, 12 first rolling bearing, 13T-shaped connecting plate, 14 discharge valve, 15 sealing ring, 16 heating coil, 17 rectangular rod, 18 round pipe and 19 telescopic rod.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments.
In the description of the present invention, it is to be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention.
Referring to fig. 1-4, a hydrogen embrittlement prevention phosphating production line for high-strength bolts, which comprises a base plate 1, wherein the upper surface of the base plate 1 is fixedly connected with a heating box 2, a phosphating box 3, a pickling box 4, an electroplating box 5 and a cleaning box 6 in sequence, the upper surface corner of the base plate 1 is fixedly connected with supporting columns 10, the upper surfaces of the supporting columns 10 are fixedly connected with a U-shaped supporting plate 11 together, through holes are formed in the outer walls of the two sides of the U-shaped supporting plate 11, a first rolling bearing 12 is fixedly connected with the hole wall of each through hole, a moving mechanism 7 is fixedly connected with the inner wall of the first rolling bearing 12, a T-shaped connecting plate 13 is fixedly connected with the bottom end of the moving mechanism 7, an elevating mechanism 8 is fixedly connected with the lower surface of the.
The moving mechanism 7 comprises a screw rod 71 fixedly connected with the inner walls of the two first rolling bearings 12, a screw rod nut 72 is in threaded connection with the rod wall of the screw rod 71, the outer wall of the screw rod nut 72 is fixedly connected with the upper surface of the T-shaped connecting plate 13, a moving through hole 73 matched with the T-shaped connecting plate 13 is formed in the lower surface of the U-shaped supporting plate 11, a first driving motor 74 is fixedly connected with the side wall of the U-shaped supporting plate 11, and the output end of the first driving motor 74 is fixedly connected with the side wall of the screw rod 71.
The auxiliary mechanism 9 includes bellows 91 with bottom plate 1 upper surface fixed connection, the inner wall fixedly connected with air-blower 92 of bellows 91, the inner wall swing joint of bellows 91 has fender ring 93, the last fixed surface of fender ring 93 is connected with and filters otter board 94, the fixed intercommunication of output of air-blower 92 has pipe 95, the fixed intercommunication of pipe wall of pipe 95 has a plurality of branch pipes 96, the bottom mounting intercommunication of branch pipe 96 has check valve 97, the output of a plurality of check valves 97 respectively with adjacent bonderizing case 3, pickling box 4, the fixed intercommunication of lateral wall of electroplating box 5 and washing case 6, air-blower 92 makes outside air pass through pipe 95, branch pipe 96 and check valve 97 carry respectively in the bonderizing case 3, pickling box 4, electroplating box 5 and the washing case 6, and make the incasement liquid upset can not deposit, the quality of bolt processing has been ensured.
The outer walls of the phosphating tank 3, the pickling tank 4, the electroplating tank 5 and the cleaning tank 6 are fixedly communicated with discharge valves 14, and the discharge valves 14 are convenient for discharging liquid in each tank body.
The outer wall of the baffle ring 93 is fixedly connected with a sealing ring 15, the sealing ring 15 is made of rubber, and the sealing ring 1515 can increase the connection stability of the filter screen plate 94.
The heating coil 16 is fixedly connected to the inner wall of the heating box 2, hydrogen on the bolt workpiece can escape through heating of the heating coil 16, and stress is fully released.
The lower surface of the feed screw nut 72 is fixedly connected with two rectangular rods 17, the rod wall of each rectangular rod 17 is movably sleeved with a round pipe 18 and a round pipe 18, so that the rectangular rods 17 can move conveniently, and the rectangular rods 17 can guarantee the stability of the movement of the feed screw nut 72.
The upper surface of the fixing plate 85 is fixedly connected with the telescopic rod 19, the upper surface of the telescopic rod 19 is fixedly connected with the lower surface of the T-shaped connecting plate 13, the telescopic rod 19 can ensure that the fixing plate 85 cannot rotate along with the threaded cylinder 83, and the first driving motor 74, the second driving motor 81 and the blower 92 are all electrically connected with an external power supply through control switches, which is the prior art and belongs to a conventional technical means of a person in the art, and therefore, the description is omitted.
In the utility model, the heating box 2, the phosphorization box 3, the pickling box 4, the electroplating box 5 and the cleaning box 6 are integrated together, then the lead screw 71 is rotated by the first driving motor 74, the lead screw 71 makes the lead screw nut 72 move back and forth, the lead screw nut 72 makes the lifting mechanism 8 move to the upper part of each processing position of the heating box 2, the phosphorization box 3, the pickling box 4, the electroplating box 5 and the cleaning box 6, when the high-strength bolt is used for hydrogen embrittlement prevention phosphorization processing, firstly the bolt workpiece is fixed on the hook 87 by the iron wire, then the bolt workpiece is moved to the upper part of the heating box 2 by the first driving motor 74, then the second driving motor 81 is started, the second driving motor 81 makes the thread cylinder 83 rotate by the driving bevel gear 88 and the driven bevel gear 89, the thread cylinder 83 pushes the fixing plate 85 to move downwards by the threaded rod 84, the fixing plate 85 makes the bolt enter the heating box 2 by the hanging strip 86 to be heated by the heating, so that the hydrogen on the bolt workpiece can escape, the stress is fully released, then the bolt sequentially enters the phosphating tank 3, the pickling tank 4, the electroplating tank 5 and the cleaning tank 6 for processing, in the bolt processing process, the blower 92 is started, the blower 92 enables outside air to be respectively conveyed into the phosphating tank 3, the pickling tank 4, the electroplating tank 5 and the cleaning tank 6 through the conduit 95, the branch pipe 96 and the one-way valve 97, liquid in the tanks is enabled to be overturned and not to be precipitated, the bolt processing quality is guaranteed, the mechanism integrates the processing positions of the hydrogen embrittlement prevention phosphating production line of the high-strength bolt, realizes automatic processing through the moving mechanism and the lifting mechanism, does not need to transport bolt workpieces back and forth, saves time and labor, improves the efficiency of processing the bolt of the hydrogen embrittlement prevention phosphating production line of the high-strength bolt, reduces the strength of workers, and ensures the quality of bolt processing.
The above, only be the concrete implementation of the preferred embodiment of the present invention, but the protection scope of the present invention is not limited thereto, and any person skilled in the art is in the technical scope of the present invention, according to the technical solution of the present invention and the utility model, the concept of which is equivalent to replace or change, should be covered within the protection scope of the present invention.
Claims (9)
1. The hydrogen embrittlement prevention phosphating production line for the high-strength bolts comprises a bottom plate (1) and is characterized in that the upper surface of the bottom plate (1) is fixedly connected with a heating box (2), a phosphating box (3), a pickling box (4), an electroplating box (5) and a cleaning box (6) in sequence, supporting columns (10) are fixedly connected to corners of the upper surface of the bottom plate (1), a plurality of U-shaped supporting plates (11) are fixedly connected to the upper surface of the supporting columns (10) jointly, through holes are formed in the outer walls of the two sides of each U-shaped supporting plate (11), first rolling bearings (12) are fixedly connected to the hole walls of the through holes, a moving mechanism (7) is fixedly connected to the inner walls of the first rolling bearings (12), a T-shaped connecting plate (13) is fixedly connected to the bottom end of the moving mechanism (7), and a lifting mechanism (8) is fixedly connected to the, the upper surface of the bottom plate (1) is fixedly connected with an auxiliary mechanism (9).
2. The hydrogen embrittlement prevention phosphating production line for the high-strength bolts as claimed in claim 1, wherein the moving mechanism (7) comprises a screw rod (71) fixedly connected with inner walls of two first rolling bearings (12), a screw rod nut (72) is in threaded connection with a rod wall of the screw rod (71), the outer wall of the screw rod nut (72) is fixedly connected with the upper surface of a T-shaped connecting plate (13), a moving through hole (73) matched with the T-shaped connecting plate (13) is formed in the lower surface of a U-shaped supporting plate (11), a first driving motor (74) is fixedly connected with a side wall of the U-shaped supporting plate (11), and an output end of the first driving motor (74) is fixedly connected with a side wall of the screw rod (71).
3. The hydrogen embrittlement prevention phosphating production line for the high-strength bolts according to claim 1, wherein the lifting mechanism (8) comprises a second driving motor (81) and a second rolling bearing (82) which are fixedly connected with the lower surface of the T-shaped connecting plate (13), a threaded cylinder (83) is fixedly connected with the inner wall of the second rolling bearing (82), a threaded rod (84) is connected with the inner wall of the threaded cylinder (83) in a threaded manner, a fixing plate (85) is fixedly connected with the bottom end of the threaded rod (84), a hanging strip (86) is fixedly connected with the lower surface of the fixing plate (85), a plurality of through holes are formed in the outer wall of the hanging strip (86), a hook (87) is movably connected with the hole wall of each through hole, a driving bevel gear (88) is fixedly connected with the output end of the second driving motor (81), and a driven bevel gear (89) is fixedly sleeved on the outer wall of, the outer wall of the driving bevel gear (88) is vertically meshed with the outer wall of the driven bevel gear (89).
4. The hydrogen embrittlement prevention phosphating production line for the high-strength bolts as claimed in claim 1, wherein the auxiliary mechanism (9) comprises a bellows (91) fixedly connected with the upper surface of the base plate (1), an air blower (92) is fixedly connected with the inner wall of the bellows (91), a baffle ring (93) is movably connected with the inner wall of the bellows (91), a filter screen plate (94) is fixedly connected with the upper surface of the baffle ring (93), a guide pipe (95) is fixedly communicated with the output end of the air blower (92), a plurality of branch pipes (96) are fixedly communicated with the pipe wall of the guide pipe (95), a check valve (97) is fixedly communicated with the bottom end of each branch pipe (96), and the output end of each check valve (97) is fixedly communicated with the side wall of the adjacent phosphating tank (3), the pickling tank (4), the electroplating tank (5) and the cleaning tank (6) respectively.
5. The hydrogen embrittlement prevention phosphating production line for the high-strength bolts as claimed in claim 1, wherein discharge valves (14) are fixedly communicated with outer walls of the phosphating tank (3), the pickling tank (4), the electroplating tank (5) and the cleaning tank (6).
6. The hydrogen embrittlement prevention phosphating production line for the high-strength bolts as claimed in claim 4, wherein a sealing ring (15) is fixedly connected to the outer wall of the baffle ring (93), and the sealing ring (15) is made of rubber.
7. The hydrogen embrittlement prevention phosphating production line for high-strength bolts according to claim 1, wherein a heating coil (16) is fixedly connected to the inner wall of the heating box (2).
8. The hydrogen embrittlement prevention phosphating production line for the high-strength bolts according to claim 2, wherein two rectangular rods (17) are fixedly connected to the lower surface of the feed screw nut (72), and circular tubes (18) are movably sleeved on rod walls of the rectangular rods (17).
9. The hydrogen embrittlement prevention phosphorization production line for the high-strength bolts as claimed in claim 3, wherein telescopic rods (19) are fixedly connected to the upper surfaces of the fixing plates (85), and the upper surfaces of the telescopic rods (19) are fixedly connected with the lower surfaces of the T-shaped connecting plates (13).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020886668.1U CN212247212U (en) | 2020-05-25 | 2020-05-25 | Hydrogen embrittlement prevention phosphating production line for high-strength bolt |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020886668.1U CN212247212U (en) | 2020-05-25 | 2020-05-25 | Hydrogen embrittlement prevention phosphating production line for high-strength bolt |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212247212U true CN212247212U (en) | 2020-12-29 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202020886668.1U Expired - Fee Related CN212247212U (en) | 2020-05-25 | 2020-05-25 | Hydrogen embrittlement prevention phosphating production line for high-strength bolt |
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| CN (1) | CN212247212U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112921315A (en) * | 2021-01-13 | 2021-06-08 | 李保艳 | Preparation process of high-strength fastener |
| CN113564506A (en) * | 2021-07-27 | 2021-10-29 | 上海涟屹轴承科技有限公司 | Thick-wall aluminum-based bimetal bearing production line and production method thereof |
-
2020
- 2020-05-25 CN CN202020886668.1U patent/CN212247212U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112921315A (en) * | 2021-01-13 | 2021-06-08 | 李保艳 | Preparation process of high-strength fastener |
| CN112921315B (en) * | 2021-01-13 | 2022-12-13 | 苏州瑞弗曼智能科技有限公司 | Preparation process of high-strength fastener |
| CN113564506A (en) * | 2021-07-27 | 2021-10-29 | 上海涟屹轴承科技有限公司 | Thick-wall aluminum-based bimetal bearing production line and production method thereof |
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| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20201229 |