CN104148500A - Shaping die for manufacture of gas turbine seals and manufacture process of gas turbine seals - Google Patents
Shaping die for manufacture of gas turbine seals and manufacture process of gas turbine seals Download PDFInfo
- Publication number
- CN104148500A CN104148500A CN201410360963.2A CN201410360963A CN104148500A CN 104148500 A CN104148500 A CN 104148500A CN 201410360963 A CN201410360963 A CN 201410360963A CN 104148500 A CN104148500 A CN 104148500A
- Authority
- CN
- China
- Prior art keywords
- diaphragm seal
- gas turbine
- content
- core rod
- blank
- 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.)
- Granted
Links
Abstract
The invention provides a shaping die for manufacture of gas turbine seals and a manufacture process of the gas turbine seals and belongs to the field of machining. The shaping die comprises a left moving core, a right moving core, a fixed die, guide posts and a base. The base is fixed on a base of a hydraulic press. The fixed die is fixed on the base. Left and right profiles of the fixed die match with a toothed surface profile of a seal; the fixed die is provided with teeth matching with those of the seal. The left moving core and the right moving core are disposed on two sides of the fixed die and fixed on a horizontal cylinder of the hydraulic press. The right surface profile of the left moving core and the left surface profile of the right moving core are matched with the smooth surface profile of the seal. The shaping die for manufacture of the gas turbine seals and the manufacture process of the gas turbine seals have the advantages that the inside and outside of the seal manufactured with the shaping die and by the manufacture process are free of flaw, the various specified requirements can be met, the shaping die and the manufacture process are fully adaptable to ultrahigh temperature and high pressure environments, and the seal never fails when a gas turbine operates.
Description
Technical field
The present invention relates to field of machining, in particular to a kind of gas turbine diaphragm seal stock mould and manufacture craft.
Background technology
Gas turbine is a kind of first and then complicated complete dynamic power machine equipment, is typical new and high technology intensive product.As high-tech carrier, gas turbine has represented the level of aggregation of how theoretical subject and the development of multiple-project field, is one of important symbol of national high-tech level and scientific and technological strength, has very outstanding strategic position.
Gas turbine diaphragm seal is one of of paramount importance parts in gas turbine, in the environment operation of superhigh temperature, high pressure, the omnidistance technological problems of diaphragm seal is the basic assurance of diaphragm seal quality, if diaphragm seal has blemishes in manufacture process, will cause substantial equipment fault.
Fig. 1-Fig. 3 shows a kind of structure of gas turbine diaphragm seal, because this diaphragm seal there is no making precedent at home, therefore in prior art, does not have mould and the manufacture craft of this diaphragm seal.
Summary of the invention
The invention provides a kind of gas turbine diaphragm seal stock mould and manufacture craft, be intended to the making problem of gas turbine diaphragm seal.
The present invention is achieved in that
A kind of gas turbine diaphragm seal stock mould, comprise move left core rod, the core rod that moves right, fixed die and base;
Described base is fixed on the base of hydraulic press;
Described fixed die is fixed on described base, and the left and right sides profile of fixed die mates with the facial contour of diaphragm seal band flute profile, and with the flute profile matching with the flute profile of described diaphragm seal;
Described move left core rod with described in the core rod that moves right be located at the both sides of described fixed die, and be individually fixed on the cross cylinder of described hydraulic press, the shiny surface profile that moves left the right surface profile of core rod and the left surface profile of the core rod that moves right and described diaphragm seal matches.
Further; described gas turbine diaphragm seal stock mould also comprises guide pillar (105); described move left core rod (103) with described in the core rod (104) that moves right be provided with guide pin bushing (106), the two ends of described guide pillar (105) lay respectively in the guide pin bushing (106) that moves left core rod and the core rod that moves right.
A kind of gas turbine diaphragm seal manufacture craft, comprising:
Inspection: confirm that material surface is without scuffing, the length of experimental material, width and thickness meet the requirements;
Analysis ingredient: the chemical composition of described material is carried out to heat analysis, and its chemical composition should meet following requirement, and wherein degree is weight percentage:
C content is no more than 0.13%
Si content is no more than 1%
Mn content is no more than 1%
P content is no more than 0.02%
S content is no more than 0.015%
Cr content 18%-21%
Ti content 2%-3%
Co content 15%-21%
Cu content is no more than 0.2%
Fe content is no more than 1.5%
Al content 1%-2%
B content is no more than 0.02%
Zr content is no more than 0.15%
Surplus is Ni;
Mechanics Performance Testing, its mechanical property should meet following requirement:
Regulation plastic elongation intensity Rp
0.2>=700MPa
Tensile strength Rm >=1100MPa
Elongation after fracture A >=15%;
Blanking: cutting stock, make blank;
Mill teeth: mill out satisfactory flute profile on blank;
Deburring: deburring processing is carried out in blank flute profile both sides;
Non-Destructive Testing: flute profile is carried out to nondestructive inspection detection;
Visual detection: guarantee that finished blank is without scuffing;
Cutting; Length as requested and width cut described blank, and retain following process surplus;
Grinding: blank is carried out to chamfering and grinding, its thickness is met the requirements;
Punch forming: described blank is struck out to satisfactory diaphragm seal with gas turbine diaphragm seal stock mould claimed in claim 1;
Trimming: diaphragm seal is cut, it is of the required size;
Pincers worker: remove burr;
Ageing Treatment: in vacuum drying oven, diaphragm seal is heated to 750 DEG C, insulation 4-8 hour, stove is cold, makes its hardness reach 295HB-365HB;
Surface is detected: the smooth surface of guaranteeing diaphragm seal is smooth, and flawless, oxide skin and pockmark guarantee that diaphragm seal bending puts in place;
Size detection: diaphragm seal size and roughness should meet the requirements;
PT detects: diaphragm seal bend is detected with penetrate inspection, guarantee inner flawless.
Further, in the time of visual detection, should at least amplify Microscopic observation at 3 times.
Further, described cutting can adopt water cutting, laser cutting or Wire EDM, ensures that cutting edge is non-microcracked.
Further, employing spectrometer carries out chemical composition detection analysis employing spectrometer and carries out chemical composition detection analysis.
The diaphragm seal of producing by gas turbine diaphragm seal stock mould provided by the invention and manufacture craft, it is inside and outside without any flaw, can reach the requirements of regulation, adapt to the working environment of superhigh temperature, high pressure completely, ensure gas turbine in the course of the work diaphragm seal there will not be problem.
Brief description of the drawings
Fig. 1 shows the structure of gas turbine diaphragm seal front view;
Fig. 2 shows the structure of gas turbine diaphragm seal top view;
Fig. 3 shows the structure of gas turbine diaphragm seal cross section;
Fig. 4 shows the structure of gas turbine stock mould top view provided by the invention;
Fig. 5 shows the structure of gas turbine stock mould front view provided by the invention;
Fig. 6 shows the structure of gas turbine stock mould right side view provided by the invention.
Detailed description of the invention
European and American developed countries just realize gas turbine power generation before 40-50, and in this field, the introduction to gas turbine, absorption, production domesticization only have in a decade or so in China.The gas turbine localization rate of parts and components of China reaches 90% at present, and the production domesticization of some key components and parts is still bottleneck problem, and this just needs us to realize and breaking through in this field.For gas-turbine wheel axial seal sheet (abbreviation diaphragm seal), all done work is and domesticly develops first, studies at present, and domestic market does not exist and similarly manufactures mould and technological process.In gas turbine, diaphragm seal has multiple, the present invention only sets forth for a kind of (shown in Fig. 1-Fig. 3) diaphragm seal wherein, gas turbine diaphragm seal manufacture craft provided by the present invention is applicable to all diaphragm seals in gas turbine, is not restricted to this kind that the present invention carries.
Refer to Fig. 1-Fig. 3, sealing sheet 201 is bending sheet material, and one side is shiny surface, and another side is Profile of AT, and there is chamfering on four limits.The material trademark of sealing sheet 201 is NiCr20Co18Ti.First it is tested material is carried out to first being processed, confirm that material surface is without scuffing, the length of experimental material, width and thickness meet the requirements.
Material composition is carried out to heat analysis, detect with spectrometer, its chemical composition should meet following requirement, and wherein degree is weight percentage:
C content is no more than 0.13%;
Si content is no more than 1%;
Mn content is no more than 1%;
P content is no more than 0.02%;
S content is no more than 0.015%;
Cr content 18%-21%;
Ti content 2%-3%;
Co content 15%-21%;
Cu content is no more than 0.2%;
Fe content is no more than 1.5%;
Al content 1%-2%;
B content is no more than 0.02%;
Zr content is no more than 0.15%;
Surplus is Ni.
Check analysis deviation should meet the regulation of table 4 in GB/T14992-1994.
Material is after making, and the mechanical property after timeliness, solution treatment should meet following requirement:
Regulation plastic elongation intensity Rp
0.2>=700MPa;
Tensile strength Rm >=1100MPa;
Elongation after fracture A >=15%.
Mode by Wire EDM is carried out cutting stock, makes blank, ensures that cutting edge is non-microcracked simultaneously, assert material direction when blanking, the length direction using the ridge orientation of material as blank, and initial workpiece applies for checking and examination and fills out list.Also can adopt the mode of laser cutting or water cutting to carry out blanking.
Blank under cutting is carried out to mill teeth, on tooth milling machine, the one side of blank is milled out to satisfactory flute profile, initial workpiece applies for checking and examination and fills out list.
The blank that milling is good is checked, and problematic product makes a record and stays shelves.
Remove the burr on flute profile both sides by pincers worker, by the non-Profile of AT of belt sander polishing.Forbid that initial workpiece applies for checking and examination and fills out list with sanding machine.
Again check, problematic product makes a record and stays shelves.
Use correcting tool fixture, blank is proofreaied and correct, guarantee that linearity meets the requirements, initial workpiece applies for checking and examination and fills out list.
Check for the third time, problematic product makes a record and stays shelves.
Prescind blank two by line cutting, control flute profile live part as far as possible, the longer the better, and initial workpiece applies for checking and examination and fills out list.
The flute profile of blank is carried out to nondestructive inspection detection, guarantee inner flawless.
Amplify Microscopic observation blank at 3 times, guarantee that finished blank surface is without scuffing.
Length as requested and width carry out further line cutting to blank, and retain following process surplus.
The blank nonconforming to thickness carries out grinding, and the thickness of each blank is met the requirements; And each blank is carried out to chamfering,
Inspection warehouse-in, and carry out final inspection record, stamped signature files, and carries out warehouse-in record and indicates, and problematic product will make a record and stay shelves.
Refer to Fig. 4-Fig. 6, the invention provides a kind of gas turbine diaphragm seal stock mould, move left core rod 103, the core rod 104 that moves right, fixed die 102, guide pillar 105 and base 101; Base 101 is fixed on the base 101 of hydraulic press; Fixed die 102 is bolted on base 101 by three, the outline of the profile of fixed die 102 left and right sides and diaphragm seal 201 Profile of AT, and with the flute profile of mating with the flute profile of diaphragm seal 201;
Move left the both sides that core rod 103 and the core rod 104 that moves right are positioned at fixed die 102, and be individually fixed in two cross cylinders in hydraulic press left and right, the flexible of cross cylinder can drive the movement that moves left core rod 103 and move right core rod 104, moves left the right surface profile of core rod 103 and the left surface profile of the core rod 104 that moves right and the shiny surface outline of diaphragm seal 201; Move left core rod 103 and be respectively provided with a guide pin bushing 106 with the rear and front end of the core rod 104 that moves right, guide pillar 105 has two, and the two ends of each guide pillar 105 lay respectively in the guide pin bushing 106 that moves left core rod 103 and the core rod 104 that moves right.
This gas turbine diaphragm seal in use, first will move left core rod 103 and the core rod 104 that moves right separates by horizontal air cylinder and fixed die 102.
Moving left between core rod 103 and fixed die 102, and moving right and put into blank between core rod 104 and fixed die 102, and the Profile of AT of packaging blanks is towards fixed die 102.
Operation hydraulic press, to the direction mobile and horizontal cylinder of fixed die 102, horizontal air cylinder drives upper mold core and the core rod 104 that moves right to rush at fixed die 102, and blank is carried out to punching press, makes its bending and obtains satisfactory diaphragm seal 201.
Can carry out bending to two blanks by this gas turbine diaphragm seal stock mould simultaneously, convenient and swift, there is efficient feature.
By this gas turbine diaphragm seal stock mould, blank is struck out after diaphragm seal, again carry out dimensional measurement and cut excision remainder punching by line, diaphragm seal 201 is of the required size.
The molybdenum filament by pincers worker, line cutting being caused after line cutting prints and burr is removed.
Diaphragm seal 201 sizes and deviation are detected, guarantee that it meets the requirements.
Diaphragm seal 201 is carried out to Ageing Treatment: in vacuum drying oven, diaphragm seal is heated to 750 DEG C, ± 10 DEG C, insulation 4-8 hour, stove is cold, makes its hardness reach 295HB-365HB.
Surface to diaphragm seal 201 is detected, and its surface should be smooth, and the blemish that the crackle that do not have, field trash, oxide skin, pockmark or other impact are used, guarantees that diaphragm seal bending puts in place.
Again diaphragm seal size is detected, guarantee that its size and roughness meet the requirements.
Detect diaphragm seal carried out to nondestructive inspection by the nondestructive inspection of PT face crack,
It is that penetration detection claims again penetrant inspection that the nondestructive inspection of PT face crack detects, and its operation principle is: bleeding agent, under capillarity, infiltrates in Surface-breaking defect; Removing after the unnecessary bleeding agent of surface of the work, by the capillarity of photographic developer, the bleeding agent in defect is being adsorbed onto to surface of the work and forms vestige and the existence of display defect, this detection method is called infiltration and detects.
Diaphragm seal provided by the invention has flex area, many places, flex area and neighboring area thereof are detected, and ensure two sides all to detect, specified operational procedure is as follows:
1, diaphragm seal is carried out to prerinse, after cleaning, solvent, the moisture etc. of leaving in detection faces must be dry, and should ensure before applying bleeding agent not contaminated.
2, apply bleeding agent, dye penetrant is evenly sprayed to the flex area of diaphragm seal.When spraying, nozzle is apart from being examined surface, flex area 30mm.In whole time of penetration, dye penetrant must soak covering and all be examined region surface; Under the temperature conditions of 10-50 DEG C, general about 30 minutes of the duration of infiltration.
3, remove unnecessary bleeding agent, first with dry, clean cloth wiping successively of not losing hair or feathers, until most of unnecessary bleeding agent is eliminated.Carry out wiping with do not lose hair or feathers cloth or paper of the cleaning that is moistened with cleaning agent again.But must not it should be noted that back and forth wiping, not handy cleaning agent directly rinses being examined region.
4, dry, dry tested position with clean cloth.
5, apply developer, developer will shake it is fully mixed evenly before using, and the developer spraying should be thin and even, can not apply same position is repeated multiple times; Apply after developer, should carry out natural drying (or with warm air dry up).
6, observation and record, observes and shows and should after developer applies, in 20min-60min, carry out.The evaluation of Flaw display should be carried out meeting under standard-required illuminance; The demonstration of defect can adopt the modes such as photographic process, video recording method and strippable plastics membrane process to carry out record, applies sketch simultaneously and indicates.
7, after processing and detecting and finish, need to remove residual various to later use or the residue harmful to material of working surface.Remove availablely scrub, the method such as washing, cloth or paper are wiped.
8, defect is explained and quality grading.
9, provide examining report.
Above-mentioned bleeding agent is generally the penetrating fluid of pigment or fluorescence pulvis etc.In the present invention, adopt fluorescence pulvis to make bleeding agent.
Now the manufacture craft of whole gas turbine diaphragm seal completes, other processing such as can indicating, carve characters on diaphragm seal surface.
When the mark SAP of the KZ place material code of specifying at seal or figure number, mark should be clear, and labeling method can adopt electric engraver or mechanical means, can not cause defect, and should forever retain.
While carving characters, need advanced examination to carve, examination is carved can not be with qualified product, and initial workpiece must apply for checking and examination and fill out list.
As required, submit quality report to, content comprises finally:
The material code of product figure number and product; Material trademark; Smelting number and chemical composition analysis report; Heat-treatment furnace lot number; Manufacture code and comprise smelting process; Actual heat treatment technique, comprises that relative recording proves; Mechanics Performance Testing report; Hardness test report; Size and outward appearance test report.
An above-mentioned cutting process is strictly carried out by ISO9000 Quality System regulation.
The foregoing is only the preferred embodiments of the present invention, be not limited to the present invention, for a person skilled in the art, the present invention can have various modifications and variations.Within the spirit and principles in the present invention all, any amendment of doing, be equal to replacement, improvement etc., within all should being included in protection scope of the present invention.
Claims (6)
1. a gas turbine diaphragm seal stock mould, is characterized in that, comprises and moves left core rod (103), the core rod that moves right (104), fixed die (102) and base (101);
Described base (101) is fixed on the base (101) of hydraulic press;
Described fixed die (102) is fixed on described base (101), and the left and right sides profile of fixed die (102) mates with the facial contour of diaphragm seal band flute profile, and with the flute profile matching with the flute profile of described diaphragm seal;
Described move left core rod (103) with described in the core rod (104) that moves right be located at the both sides of described fixed die (102), and be individually fixed on the cross cylinder of described hydraulic press, move left the right surface profile of core rod (103) and the left surface profile of the core rod that moves right (104) and the shiny surface profile of described diaphragm seal and match.
2. gas turbine diaphragm seal stock mould according to claim 1; it is characterized in that; described gas turbine diaphragm seal stock mould also comprises guide pillar (105); described move left core rod (103) with described in the core rod (104) that moves right be provided with guide pin bushing (106), the two ends of described guide pillar (105) lay respectively in the guide pin bushing (106) that moves left core rod and the core rod that moves right.
3. a gas turbine diaphragm seal manufacture craft, is characterized in that, comprising:
Inspection: confirm that material surface is without scuffing, the length of experimental material, width and thickness meet the requirements;
Analysis ingredient: the chemical composition of described material is carried out to heat analysis, and its chemical composition should meet following requirement, and wherein degree is weight percentage:
C content is no more than 0.13%
Si content is no more than 1%
Mn content is no more than 1%
P content is no more than 0.02%
S content is no more than 0.015%
Cr content 18%-21%
Ti content 2%-3%
Co content 15%-21%
Cu content is no more than 0.2%
Fe content is no more than 1.5%
Al content 1%-2%
B content is no more than 0.02%
Zr content is no more than 0.15%
Surplus is Ni;
Mechanics Performance Testing, its mechanical property should meet following requirement:
Regulation plastic elongation intensity Rp
0.2>=700MPa
Tensile strength Rm >=1100MPa
Elongation after fracture A >=15%;
Blanking: cutting stock, make blank;
Mill teeth: mill out satisfactory flute profile on blank;
Deburring: deburring processing is carried out in blank flute profile both sides;
Non-Destructive Testing: flute profile is carried out to nondestructive inspection detection;
Visual detection: guarantee that finished blank is without scuffing;
Cutting; Length as requested and width cut described blank, and retain following process surplus;
Grinding: blank is carried out to chamfering and grinding, its thickness is met the requirements;
Punch forming: described blank is struck out to satisfactory diaphragm seal with gas turbine diaphragm seal stock mould claimed in claim 1;
Trimming: diaphragm seal is cut, it is of the required size;
Pincers worker: remove burr;
Ageing Treatment: in vacuum drying oven, diaphragm seal is heated to 750 DEG C, insulation 4-8 hour, stove is cold, makes its hardness reach 295HB-365HB;
Surface is detected: the smooth surface of guaranteeing diaphragm seal is smooth, and flawless, oxide skin and pockmark guarantee that diaphragm seal bending puts in place;
Size detection: diaphragm seal size and roughness should meet the requirements;
PT detects: diaphragm seal bend is detected with penetrate inspection, guarantee inner flawless.
4. gas turbine diaphragm seal manufacture craft according to claim 3, is characterized in that, in the time of visual detection, should at least amplify Microscopic observation at 3 times.
5. gas turbine diaphragm seal manufacture craft according to claim 3, is characterized in that, described cutting can adopt water cutting, laser cutting or Wire EDM, ensures that cutting edge is non-microcracked.
6. gas turbine diaphragm seal manufacture craft according to claim 3, is characterized in that, employing spectrometer carries out chemical composition detection analysis and adopts spectrometer to carry out chemical composition detection analysis.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410360963.2A CN104148500B (en) | 2014-07-25 | 2014-07-25 | A kind of gas turbine diaphragm seal stock mould and manufacture craft |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410360963.2A CN104148500B (en) | 2014-07-25 | 2014-07-25 | A kind of gas turbine diaphragm seal stock mould and manufacture craft |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104148500A true CN104148500A (en) | 2014-11-19 |
| CN104148500B CN104148500B (en) | 2016-09-07 |
Family
ID=51874235
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410360963.2A Active CN104148500B (en) | 2014-07-25 | 2014-07-25 | A kind of gas turbine diaphragm seal stock mould and manufacture craft |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104148500B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104148500B (en) * | 2014-07-25 | 2016-09-07 | 上海海业机电设备有限公司 | A kind of gas turbine diaphragm seal stock mould and manufacture craft |
| CN111120653A (en) * | 2019-12-26 | 2020-05-08 | 宁波海山克尔铃密封件有限公司 | Seal gasket and apparatus for producing thereof |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH10156429A (en) * | 1996-11-29 | 1998-06-16 | Hitachi Ltd | Method for forming tube having complicated special cross section tube |
| US6286211B1 (en) * | 1999-03-24 | 2001-09-11 | General Electric Company | Method for making a brush-tooth seal |
| CN1946958A (en) * | 2004-04-26 | 2007-04-11 | 阿尔斯托姆科技有限公司 | Method for producing lamellae for a lamellar seal |
| CN102922288A (en) * | 2012-10-30 | 2013-02-13 | 杭州汽轮机股份有限公司 | Device and method for processing U-shaped sealing ring of gas turbine |
| CN103688023A (en) * | 2011-05-20 | 2014-03-26 | 西门子能量股份有限公司 | Seals for a gas turbine combustion system transition duct |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104148500B (en) * | 2014-07-25 | 2016-09-07 | 上海海业机电设备有限公司 | A kind of gas turbine diaphragm seal stock mould and manufacture craft |
-
2014
- 2014-07-25 CN CN201410360963.2A patent/CN104148500B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH10156429A (en) * | 1996-11-29 | 1998-06-16 | Hitachi Ltd | Method for forming tube having complicated special cross section tube |
| US6286211B1 (en) * | 1999-03-24 | 2001-09-11 | General Electric Company | Method for making a brush-tooth seal |
| CN1946958A (en) * | 2004-04-26 | 2007-04-11 | 阿尔斯托姆科技有限公司 | Method for producing lamellae for a lamellar seal |
| CN103688023A (en) * | 2011-05-20 | 2014-03-26 | 西门子能量股份有限公司 | Seals for a gas turbine combustion system transition duct |
| CN102922288A (en) * | 2012-10-30 | 2013-02-13 | 杭州汽轮机股份有限公司 | Device and method for processing U-shaped sealing ring of gas turbine |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104148500B (en) * | 2014-07-25 | 2016-09-07 | 上海海业机电设备有限公司 | A kind of gas turbine diaphragm seal stock mould and manufacture craft |
| CN111120653A (en) * | 2019-12-26 | 2020-05-08 | 宁波海山克尔铃密封件有限公司 | Seal gasket and apparatus for producing thereof |
| CN111120653B (en) * | 2019-12-26 | 2021-08-27 | 宁波海山克尔铃密封件有限公司 | Seal gasket and apparatus for producing thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| CN104148500B (en) | 2016-09-07 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN106181218B (en) | A kind of aluminium alloy wheel hub of vehicle remanufactures technique | |
| CN208557675U (en) | A kind of building decorative plates cutter device | |
| CN104148499B (en) | A kind of processing technology of gas turbine locking plate | |
| CN104175067A (en) | Panel manufacturing method | |
| CN110369668A (en) | A kind of forging technology of the aero-compressor blade based on nickel base superalloy | |
| CN110369669A (en) | A kind of forging technology of the aero-compressor blade based on stainless steel material | |
| CN107662109A (en) | A kind of thermos cup volumetric laser cuts flat mouth all-in-one | |
| CN104174749B (en) | Many curved surfaces titanium alloy component shaped device and method | |
| CN106346198B (en) | A kind of processing method for improving rotating member and obturaging comb tooth surface integrality | |
| CN104148500B (en) | A kind of gas turbine diaphragm seal stock mould and manufacture craft | |
| CN105750692A (en) | Bead welding technology for repairing forging die mold cavity | |
| CN107838642A (en) | A kind of processing method of bipode thin wall vane part | |
| CN204018531U (en) | A kind of gas turbine diaphragm seal stock mould | |
| CN207386250U (en) | A kind of bending tool of hollow aluminum strip | |
| CN204018530U (en) | A kind of gas turbine locking plate mould | |
| CN108393437A (en) | A kind of production technology of cast housing | |
| CN105459310A (en) | Trimming rolling cutter for machine use for automotive trim injection-molded products | |
| CN208945000U (en) | Close sheet metal component Bending Mould | |
| CN107807025A (en) | A kind of method for prefabricating of metal material cycles left life-span specimen surface crackle | |
| CN206426334U (en) | A kind of notebook computer shell interior frame foreign minister's processing jig | |
| TW201221283A (en) | An inspection method for machining tool | |
| CN114273854A (en) | Method for forming special-shaped opening frame skin reinforcement part | |
| CN205929193U (en) | High tension cable for annex rubber prefab overlap repair instrument that removes | |
| CN106425348B (en) | Processing method and mold | |
| CN102980795B (en) | Precise band steel tensile sample polishing stick and polishing method thereof |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |