CN113102955A - Tooth-shaped processing technology of metal sealing washer - Google Patents
Tooth-shaped processing technology of metal sealing washer Download PDFInfo
- Publication number
- CN113102955A CN113102955A CN202110443728.1A CN202110443728A CN113102955A CN 113102955 A CN113102955 A CN 113102955A CN 202110443728 A CN202110443728 A CN 202110443728A CN 113102955 A CN113102955 A CN 113102955A
- Authority
- CN
- China
- Prior art keywords
- tooth
- blank
- sealing washer
- metal sealing
- processing technology
- 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.)
- Withdrawn
Links
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23P—METAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
- B23P15/00—Making specific metal objects by operations not covered by a single other subclass or a group in this subclass
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Gasket Seals (AREA)
Abstract
The invention discloses a tooth profile processing technology of a metal sealing washer, which specifically comprises the following steps: s1, blank selection and rough turning: firstly, selecting a corresponding required carbon steel material as a blank, turning the rough machined blank to form a ring, wherein the outer diameter of the ring body is provided with a margin of the difference value between the inner diameter and the outer diameter of the sealing washer, the ring is used for sleeving an elastic ferrule matched with the ring, S2, slotting machining, S3, tooth-shaped cutting, S4, finish machining and polishing, S5, heat treatment and product flaw detection, and the invention relates to the technical field of metal sealing washer machining. The tooth-shaped processing technology of the metal sealing washer can achieve the purpose that slotting and tooth-punching can be completed through clamping once, the purpose that the metal sealing washer is processed quickly and efficiently is well achieved, the production efficiency of the metal sealing washer is greatly improved, multiple clamping and installation of a gasket blank to be processed are not needed, the metal sealing washer is suitable for processing of different processing stations, and the labor intensity of production personnel is reduced.
Description
Technical Field
The invention relates to the technical field of metal sealing washer processing, in particular to a tooth shape processing technology of a metal sealing washer.
Background
The metal tooth-shaped gasket is generally processed into concentric grooves on two surfaces of a metal stainless steel flat gasket by using a precise lathe, flexible graphite, PTFE (polytetrafluoroethylene), asbestos-free plates or other soft metals can be selected according to different media, the flexible graphite, the PTFE, the asbestos-free plates or other soft metals can be adhered to two surfaces of the gasket, the gasket can be directly used without a sealing layer, a good sealing effect can be achieved, the surface of a flange is easily lost in a high-pressure occasion, and the structural type of the gasket is divided into two basic types along with the difference of the sealing surface of the flange: 1. a toothed pad with a positioning ring for a planar flange; 2. the tooth-shaped combined gasket is used for the concave-convex flange without a positioning ring, the tooth-shaped combined gasket is the first gasket under lower pretightening force, the metal is prevented from being directly contacted with the metal by the soft sealing layer on the surface, the metal can be reliably and tightly combined, the metal flange is protected from being damaged, and the tooth-shaped combined gasket is particularly suitable for occasions with alternating working conditions of high temperature, high pressure and high working condition even under extremely high load and is an ideal substitute of the traditional metal coated gasket at the flange connection part of a heat exchanger, a container and a reaction kettle.
The tooth form of present metal seal ring is in the production and processing process, and the gasket blank of treating to process need be carried out clamping installation many times mostly, adapts to the processing of different processing stations, like this greatly increased producers ' intensity of labour, can not realize once can accomplishing fluting and gulleting through the clamping and handle, can't reach not only quick but also the efficient purpose of processing metal seal ring, greatly reduced metal seal ring's production efficiency to bring very big inconvenience for metal seal ring manufacturing enterprise.
Disclosure of Invention
Technical problem to be solved
Aiming at the defects of the prior art, the invention provides a tooth profile processing technology of a metal sealing washer, which solves the problems that the tooth profile of the existing metal sealing washer mostly needs to clamp and mount gasket blanks to be processed for many times in the production and processing process to adapt to the processing of different processing stations, thereby greatly increasing the labor intensity of production personnel, being incapable of completing the grooving and tooth punching processing through clamping once, being incapable of achieving the purpose of processing the metal sealing washer quickly and efficiently, and greatly reducing the production efficiency of the metal sealing washer.
(II) technical scheme
In order to achieve the purpose, the invention is realized by the following technical scheme: a tooth-shaped processing technology of a metal sealing gasket specifically comprises the following steps:
s1, blank selection and rough turning: firstly, selecting a corresponding required carbon steel material as a blank, turning the rough machined blank to form an annular body, wherein the outer diameter of the annular body is provided with a margin of the difference value of the inner diameter and the outer diameter of the sealing washer, and the annular body is used for sleeving an elastic ferrule matched with the annular body;
s2, grooving: positioning and installing the blank after the rough turning in the step S1 on a cutting mechanism through a self-adaptive clamp on a cutting machine tool, starting the whole cutting machine tool through an operation switch, and performing cutter feeding and off-position cutting through a pre-recorded numerical control program by a built-in controller of the cutting machine tool to complete the slotting of the blank;
s3, tooth profile cutting treatment: firstly, operating a control switch to enable a built-in controller of the cutting machine tool to transfer the position of the self-adaptive clamp to a tooth profile machining station according to an input numerical control program, and performing tooth profile cutting on a blank under the condition of not performing secondary unloading and clamping;
s4, finishing and polishing: taking the sealing washer subjected to the tooth shape processing in the step S3 off the clamp, and sequentially carrying out finish machining and polishing treatment through finish machining equipment and grinding equipment according to the size requirement;
s5, heat treatment and product flaw detection; and (3) putting the blank polished in the step S4 into a heat treatment furnace, quenching for 2-3 times under the condition that the temperature is 300-400 ℃, ensuring that the hardness, the rebound hardness and the fatigue resistance of the gasket reach the standard, cleaning by cleaning equipment after the heat treatment is finished, performing flaw detection test when the gasket leaves a factory, and performing flaw detection test on the processed gasket to ensure that the overall quality reaches the standard.
Preferably, the blank in step S1 is a bar with a diameter of 5-10mm and a length of 3-10mm or a block with a length of 8mm 3 mm.
Preferably, the difference between the outer diameter of the annular body allowance in the step S1 and the inner diameter and the outer diameter of the sealing washer is 1.5-3.3 mm.
Preferably, in the step S2, during the cutting process of the blank, the inner hole of the bearing washer is linearly cut, the bar stock is linearly cut into a coarse material, the integrally polished bar stock is cut into a sealing washer by a thickness preset by the working condition machine, and a scribing groove with a margin according to a required size is reserved between the linear cuts on one side of the surface.
Preferably, the cutting machine tool in the steps S2 and S3 is a numerical control horizontal machine tool with the model number of CA6136, and a controller with the model number of ARM9 is arranged inside the cutting machine tool.
Preferably, the grinding device in the step S4 is a full-automatic grinding machine with model number MB 1432A.
Preferably, the heat treatment furnace in the step S5 is a controllable heat treatment furnace with the model number of RT 2-90-10.
Preferably, the flaw detection device in step S5 is an ultrasonic flaw detector with a model of MasterScan 340.
(III) advantageous effects
The invention provides a tooth-shaped processing technology of a metal sealing washer. Compared with the prior art, the method has the following beneficial effects: the tooth-shaped processing technology of the metal sealing washer specifically comprises the following steps: s1, blank selection and rough turning: firstly, selecting a corresponding required carbon steel material as a blank, turning the rough machined blank to form an annular body, wherein the outer diameter of the annular body is provided with a margin of the difference value of the inner diameter and the outer diameter of the sealing washer, and the annular body is used for sleeving an elastic ferrule matched with the annular body; s2, grooving: positioning and installing the blank after the rough turning in the step S1 on a cutting mechanism through a self-adaptive clamp on a cutting machine tool, starting the whole cutting machine tool through an operation switch, and performing cutter feeding and off-position cutting through a pre-recorded numerical control program by a built-in controller of the cutting machine tool to complete the slotting of the blank; s3, tooth profile cutting treatment: firstly, operating a control switch to enable a built-in controller of the cutting machine tool to transfer the position of the self-adaptive clamp to a tooth profile machining station according to an input numerical control program, and performing tooth profile cutting on a blank under the condition of not performing secondary unloading and clamping; s4, finishing and polishing: taking the sealing washer subjected to the tooth shape processing in the step S3 off the clamp, and sequentially carrying out finish machining and polishing treatment through finish machining equipment and grinding equipment according to the size requirement; s5, heat treatment and product flaw detection; the blank polished in the step S4 is placed into a heat treatment furnace to be quenched for 2-3 times under the condition that the temperature is 300-400 ℃, so that the hardness, the rebound hardness and the fatigue resistance of the gasket reach the standard, after the heat treatment is finished, cleaning treatment is carried out through cleaning equipment, then flaw detection test is carried out when the gasket leaves the factory, and the flaw detection test is carried out on the processed gasket, so that the overall quality reaches the standard, grooving and toothpunching can be finished through clamping once, the purpose of processing the metal gasket quickly and efficiently is well achieved, the production efficiency of the metal gasket is greatly improved, the blank of the gasket to be processed does not need to be clamped and installed for multiple times to adapt to the processing of different processing stations, the labor intensity of production personnel is reduced, and the production of metal gasket production enterprises is greatly facilitated.
Drawings
FIG. 1 is a process flow diagram of the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1, the embodiment of the present invention provides three technical solutions: a tooth-shaped processing technology of a metal sealing gasket specifically comprises the following embodiments:
example 1
A tooth-shaped processing technology of a metal sealing gasket specifically comprises the following steps:
s1, blank selection and rough turning: firstly, selecting a corresponding required carbon steel material as a blank, turning and roughly processing the blank to form a ring, wherein the outer diameter of the ring body is provided with a margin of the difference value of the inner diameter and the outer diameter of the sealing washer and is used for sleeving the elastic ferrule matched with the ring body, the blank is a bar with the diameter of 8mm and the length of 6mm, and the difference value of the inner diameter and the outer diameter of the sealing washer is kept at the outer diameter of the margin of the ring body and is 2 mm;
s2, grooving: positioning and installing the blank after rough turning in the step S1 on a cutting mechanism through an adaptive clamp on a cutting machine tool, starting the whole cutting machine tool through an operating switch, feeding and shifting cutting a cutter through a pre-recorded numerical control program by a built-in controller of the cutting machine tool, and completing slotting of the blank;
s3, tooth profile cutting treatment: firstly, operating a control switch to enable a built-in controller of the cutting machine tool to transfer the position of the self-adaptive clamp to a tooth profile machining station according to an input numerical control program, and performing tooth profile cutting on a blank under the condition of not performing secondary unloading and clamping;
s4, finishing and polishing: taking the sealing washer subjected to the tooth profile machining in the step S3 off the clamp, and sequentially carrying out finish machining and polishing treatment according to the size requirement by using finish machining equipment and grinding equipment, wherein the grinding equipment is a full-automatic grinding machine with the model number of MB 1432A;
s5, heat treatment and product flaw detection; and (3) putting the blank polished in the step S4 into a heat treatment furnace, quenching for 2 times at the temperature of 350 ℃ to ensure that the hardness, the rebound hardness and the fatigue resistance of the gasket reach the standard, cleaning by cleaning equipment after the heat treatment is finished, performing flaw detection test when the gasket leaves a factory, and performing flaw detection test on the processed gasket to ensure that the overall quality reaches the standard, wherein the heat treatment furnace is a controllable heat treatment furnace with the model of RT2-90-10, and the flaw detection equipment is an ultrasonic flaw detector with the model of MasterScan 340.
In the embodiment of the invention, the cutting machine tool is a numerical control horizontal machine tool with the model number of CA6136, and a controller with the model number of ARM9 is arranged in the cutting machine tool.
Example 2
A tooth-shaped processing technology of a metal sealing gasket specifically comprises the following steps:
s1, blank selection and rough turning: firstly, selecting a corresponding required carbon steel material as a blank, turning and roughly processing the blank to form a ring, wherein the outer diameter of the ring body is provided with a margin of the difference value of the inner diameter and the outer diameter of the sealing washer and is used for sleeving the elastic ferrule matched with the ring body, the blank is a bar with the diameter of 5mm and the length of 3mm, and the difference value of the inner diameter and the outer diameter of the sealing washer is kept at the outer diameter of the margin of the ring body and is 1.5 mm;
s2, grooving: positioning and installing the blank after rough turning in the step S1 on a cutting mechanism through an adaptive clamp on a cutting machine tool, starting the whole cutting machine tool through an operating switch, feeding and shifting cutting a cutter through a pre-recorded numerical control program by a built-in controller of the cutting machine tool, and completing slotting of the blank;
s3, tooth profile cutting treatment: firstly, operating a control switch to enable a built-in controller of the cutting machine tool to transfer the position of the self-adaptive clamp to a tooth profile machining station according to an input numerical control program, and performing tooth profile cutting on a blank under the condition of not performing secondary unloading and clamping;
s4, finishing and polishing: taking the sealing washer subjected to the tooth profile machining in the step S3 off the clamp, and sequentially carrying out finish machining and polishing treatment according to the size requirement by using finish machining equipment and grinding equipment, wherein the grinding equipment is a full-automatic grinding machine with the model number of MB 1432A;
s5, heat treatment and product flaw detection; and (3) putting the blank polished in the step S4 into a heat treatment furnace, quenching for 3 times at the temperature of 300 ℃ to ensure that the hardness, the rebound hardness and the fatigue resistance of the gasket reach the standard, cleaning by cleaning equipment after the heat treatment is finished, performing flaw detection test when the gasket leaves a factory, and performing flaw detection test on the processed gasket to ensure that the overall quality reaches the standard, wherein the heat treatment furnace is a controllable heat treatment furnace with the model of RT2-90-10, and the flaw detection equipment is an ultrasonic flaw detector with the model of MasterScan 340.
In the embodiment of the invention, the cutting machine tool is a numerical control horizontal machine tool with the model number of CA6136, and a controller with the model number of ARM9 is arranged in the cutting machine tool.
Example 3
A tooth-shaped processing technology of a metal sealing gasket specifically comprises the following steps:
s1, blank selection and rough turning: firstly, selecting a corresponding required carbon steel material as a blank, turning and roughly processing the blank to form a ring, wherein the outer diameter of the ring body is provided with a margin of the difference value between the inner diameter and the outer diameter of the sealing washer and is used for sleeving the elastic ferrule matched with the ring body, the blank is a block material with 8mm x 3mm, and the difference value between the inner diameter and the outer diameter of the sealing washer is 3.3 mm;
s2, grooving: positioning and installing the blank after rough turning in the step S1 on a cutting mechanism through an adaptive clamp on a cutting machine tool, starting the whole cutting machine tool through an operating switch, feeding and shifting cutting a cutter through a pre-recorded numerical control program by a built-in controller of the cutting machine tool, and completing slotting of the blank;
s3, tooth profile cutting treatment: firstly, operating a control switch to enable a built-in controller of the cutting machine tool to transfer the position of the self-adaptive clamp to a tooth profile machining station according to an input numerical control program, and performing tooth profile cutting on a blank under the condition of not performing secondary unloading and clamping;
s4, finishing and polishing: taking the sealing washer subjected to the tooth profile machining in the step S3 off the clamp, and sequentially carrying out finish machining and polishing treatment according to the size requirement by using finish machining equipment and grinding equipment, wherein the grinding equipment is a full-automatic grinding machine with the model number of MB 1432A;
s5, heat treatment and product flaw detection; and (3) putting the blank polished in the step S4 into a heat treatment furnace, quenching for 2 times at the temperature of 400 ℃ to ensure that the hardness, the rebound hardness and the fatigue resistance of the gasket reach the standard, cleaning by cleaning equipment after the heat treatment is finished, performing flaw detection test when the gasket leaves a factory, and performing flaw detection test on the processed gasket to ensure that the overall quality reaches the standard, wherein the heat treatment furnace is a controllable heat treatment furnace with the model of RT2-90-10, and the flaw detection equipment is an ultrasonic flaw detector with the model of MasterScan 340.
In the embodiment of the invention, the cutting machine tool is a numerical control horizontal machine tool with the model number of CA6136, and a controller with the model number of ARM9 is arranged in the cutting machine tool.
In conclusion, the invention can complete the slotting and the tooth punching treatment by clamping once, well achieves the purpose of quickly and efficiently machining the metal sealing washer, greatly improves the production efficiency of the metal sealing washer, does not need to clamp and install the gasket blank to be machined for multiple times to adapt to the machining of different machining stations, lightens the labor intensity of production personnel, and greatly facilitates the production of metal sealing washer production enterprises.
And those not described in detail in this specification are well within the skill of those in the art.
It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (8)
1. A tooth-shaped processing technology of a metal sealing washer is characterized in that: the method specifically comprises the following steps:
s1, blank selection and rough turning: firstly, selecting a corresponding required carbon steel material as a blank, turning the rough machined blank to form an annular body, wherein the outer diameter of the annular body is provided with a margin of the difference value of the inner diameter and the outer diameter of the sealing washer, and the annular body is used for sleeving an elastic ferrule matched with the annular body;
s2, grooving: positioning and installing the blank after the rough turning in the step S1 on a cutting mechanism through a self-adaptive clamp on a cutting machine tool, starting the whole cutting machine tool through an operation switch, and performing cutter feeding and off-position cutting through a pre-recorded numerical control program by a built-in controller of the cutting machine tool to complete the slotting of the blank;
s3, tooth profile cutting treatment: firstly, operating a control switch to enable a built-in controller of the cutting machine tool to transfer the position of the self-adaptive clamp to a tooth profile machining station according to an input numerical control program, and performing tooth profile cutting on a blank under the condition of not performing secondary unloading and clamping;
s4, finishing and polishing: taking the sealing washer subjected to the tooth shape processing in the step S3 off the clamp, and sequentially carrying out finish machining and polishing treatment through finish machining equipment and grinding equipment according to the size requirement;
s5, heat treatment and product flaw detection; and (3) putting the blank polished in the step S4 into a heat treatment furnace, quenching for 2-3 times under the condition that the temperature is 300-400 ℃, ensuring that the hardness, the rebound hardness and the fatigue resistance of the gasket reach the standard, cleaning by cleaning equipment after the heat treatment is finished, performing flaw detection test when the gasket leaves a factory, and performing flaw detection test on the processed gasket to ensure that the overall quality reaches the standard.
2. The tooth-shaped processing technology of a metal sealing gasket according to claim 1, characterized in that: in the step S1, the blank is a bar with a diameter of 5-10mm and a length of 3-10mm or a block with a length of 8mm by 3 mm.
3. The tooth-shaped processing technology of a metal sealing gasket according to claim 1, characterized in that: and in the step S1, the difference between the inner diameter and the outer diameter of the annular body allowance sealing washer is 1.5-3.3 mm.
4. The tooth-shaped processing technology of a metal sealing gasket according to claim 1, characterized in that: in the step S2, in the process of cutting the blank, the inner hole of the bearing washer is cut by wire and the bar stock is cut into coarse material, the integrally polished bar stock is cut into a sealing washer by a thickness preset by the working condition machine, and a groove is reserved between the wire cuts on the surface side for marking a line according to the required size.
5. The tooth-shaped processing technology of a metal sealing gasket according to claim 1, characterized in that: the cutting machine tool in the step S2 and the step S3 is a numerical control horizontal machine tool with the model number of CA6136, and a controller with the model number of ARM9 is arranged in the cutting machine tool.
6. The tooth-shaped processing technology of a metal sealing gasket according to claim 1, characterized in that: the grinding device in the step S4 is a full-automatic grinding machine with model number MB 1432A.
7. The tooth-shaped processing technology of a metal sealing gasket according to claim 1, characterized in that: the heat treatment furnace in the step S5 is a controllable heat treatment furnace with the model number of RT 2-90-10.
8. The tooth-shaped processing technology of a metal sealing gasket according to claim 1, characterized in that: in the step S5, the flaw detection device is an ultrasonic flaw detector with a model of MasterScan 340.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110443728.1A CN113102955A (en) | 2021-04-23 | 2021-04-23 | Tooth-shaped processing technology of metal sealing washer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110443728.1A CN113102955A (en) | 2021-04-23 | 2021-04-23 | Tooth-shaped processing technology of metal sealing washer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN113102955A true CN113102955A (en) | 2021-07-13 |
Family
ID=76719648
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110443728.1A Withdrawn CN113102955A (en) | 2021-04-23 | 2021-04-23 | Tooth-shaped processing technology of metal sealing washer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN113102955A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114273860A (en) * | 2021-12-24 | 2022-04-05 | 贵州精立航太科技有限公司 | Design, processing and control method of locking type damping washer |
| CN115488585A (en) * | 2022-08-31 | 2022-12-20 | 核工业西南物理研究院 | Method and device for manufacturing top first-wall graphite mounting plate |
| CN116787167A (en) * | 2023-08-03 | 2023-09-22 | 苏州华丰不锈钢紧固件有限公司 | Nut gasket processing equipment |
-
2021
- 2021-04-23 CN CN202110443728.1A patent/CN113102955A/en not_active Withdrawn
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114273860A (en) * | 2021-12-24 | 2022-04-05 | 贵州精立航太科技有限公司 | Design, processing and control method of locking type damping washer |
| CN115488585A (en) * | 2022-08-31 | 2022-12-20 | 核工业西南物理研究院 | Method and device for manufacturing top first-wall graphite mounting plate |
| CN116787167A (en) * | 2023-08-03 | 2023-09-22 | 苏州华丰不锈钢紧固件有限公司 | Nut gasket processing equipment |
| CN116787167B (en) * | 2023-08-03 | 2023-10-27 | 苏州华丰不锈钢紧固件有限公司 | Nut gasket processing equipment |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN113102955A (en) | Tooth-shaped processing technology of metal sealing washer | |
| CN107921518B (en) | Die for ironing and die block | |
| CN109531057B (en) | Machining method of 9Ni steel end socket | |
| CN102343474A (en) | Welding electrode with contoured face | |
| CN211689221U (en) | Back plate with internal water channel groove and target material | |
| CN101412195A (en) | Coolant supply | |
| CN115922242A (en) | Method for processing inner ring and outer ring of self-aligning roller bearing | |
| CN206230130U (en) | Stainless-steel pipe welding special equipment | |
| CN111331326A (en) | Processing method of plug-in type high-rotating-speed spiral drill rod | |
| CN105364429A (en) | Manufacturing method of thick-walled two-phase stainless steel gland | |
| CN109746650A (en) | A kind of low-cost high-quality kitchen knife composite stainless steel and its manufacturing method | |
| CN111531325B (en) | Method for processing split finger tip sheet | |
| JP7330194B2 (en) | Electrode readjustment tool and method of use | |
| CN110524194B (en) | Machining method of thin-sheet annular part | |
| CN104959710A (en) | Carbon steel pipe welding technology | |
| CN104588890A (en) | Clamp for surfacing outer surface of thin-wall annular workpiece | |
| CN110732838A (en) | processing technology for processing omega-shaped ring sealing gasket | |
| CN204220998U (en) | For the blade process equipment of sheet material cutting disc | |
| CN110977352A (en) | Processing technology of anti-corrosion tube plate for shell-and-tube heat exchanger | |
| CN220944776U (en) | Device for removing surface coating layer of gear hub | |
| US3778884A (en) | Method of manufacturing a sink comprising a bench and a basin | |
| CN113547285B (en) | Method for processing multi-section ultrathin annular piece | |
| CN110757107B (en) | Fingertip sheet processing technology | |
| CN112059554A (en) | Crankshaft journal groove sinking and quenching process | |
| CN100513593C (en) | Thermal treatment technique for improving rigidity of integer manhole flange sealing surface |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| WW01 | Invention patent application withdrawn after publication |
Application publication date: 20210713 |
|
| WW01 | Invention patent application withdrawn after publication |