CN105483704A - Deep chemical milling method of TA12 and TA15 titanium-alloy large-scale structural components - Google Patents
Deep chemical milling method of TA12 and TA15 titanium-alloy large-scale structural components Download PDFInfo
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- CN105483704A CN105483704A CN201510819646.7A CN201510819646A CN105483704A CN 105483704 A CN105483704 A CN 105483704A CN 201510819646 A CN201510819646 A CN 201510819646A CN 105483704 A CN105483704 A CN 105483704A
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- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23F—NON-MECHANICAL REMOVAL OF METALLIC MATERIAL FROM SURFACE; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL; MULTI-STEP PROCESSES FOR SURFACE TREATMENT OF METALLIC MATERIAL INVOLVING AT LEAST ONE PROCESS PROVIDED FOR IN CLASS C23 AND AT LEAST ONE PROCESS COVERED BY SUBCLASS C21D OR C22F OR CLASS C25
- C23F1/00—Etching metallic material by chemical means
- C23F1/02—Local etching
- C23F1/04—Chemical milling
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Abstract
The invention relates to the field of deep chemical milling of titanium-alloy large-scale cylindrical parts, in particular to a deep chemical milling method of TA12 and TA15 titanium-alloy large-scale structural components. The deep chemical milling method comprises the following technological lines: degreasing, washing, pickling, washing, coating with a protecting adhesive, marking, removing a protecting adhesive film on a to-be-milled surface, chemically milling and conducting vibrating finishing. The method comprises the following steps: a titanium-alloy cylindrical part is processed into a thin-walled grid rib by adopting a deep chemical milling technology, and the thin-walled grid rib is primarily marked and chemically milled to obtain a chemical milling machine case shell with all mounting bases. The manufacturing of integral, thin-walled and grid-shaped titanium-alloy large-scale cylindrical structural components is completed by adopting the titanium-alloy deep chemical milling technology, and the requirement that the large-scale cylindrical parts are chemically milled to form the grid-shaped structure is met; and deformation, caused by machining, is avoided fundamentally, the problem of low strength caused by welding is solved, the overall rigidity of the component is improved, and besides, the production cycle is shortened, and the structural weight is reduced.
Description
Technical field
The present invention relates to titanium alloy large-sized cylindrical shell class part depth chemistry milling field, be specially a kind of TA12, TA15 titanium alloy large-sized structural part degree of depth chemistry milling method.
Background technology
External three generations's machine engine stage starts to apply composite structure and contains casing outward, arrived with F119 be Typical Representative four generation machine engine, relatively more again apply the milling of titanium alloy chemistry and contain casing outward.Major cause is the raising along with motor performance, by-pass air duct gas flow temperature improves thereupon, there is bottleneck in the performance resins based composites of development tolerance higher temperature, casing is contained in the milling of titanium alloy chemistry outward simultaneously ripe application experience, temperature resistant capability is high, and through updating, can meet four generation machine engine service requirements.
Along with the raising to the comprehensive level of understanding of engine of new generation, finding that matrix material contains casing outward all underlying to external accessory, there is disadvantageous effect in the aspect such as number of parts and maintainability.Domesticly also determine to carry out the design and processes that the milling of titanium alloy chemistry contains casing outward and grope, carrying out technical study work, is very necessary, very urgent.
Summary of the invention
The object of the present invention is to provide a kind of TA12, TA15 titanium alloy large-sized structural part degree of depth chemistry milling method, adopt titanium alloy degree of depth chemistry milling technology to complete the manufacture of whole titanium alloy, thin-walled, latticed large-size cylinder body class formation part, meet the latticed chemistry milling structure of large-size cylinder body class part; Fundamentally avoid the distortion that mechanical workout is brought, solve welding and bring intensity to reduce problem, improve member integrated rigidity, shorten the production cycle simultaneously, alleviate structural weight.
Technical scheme of the present invention is:
A kind of TA12, TA15 titanium alloy large-sized structural part degree of depth chemistry milling method; the operational path of the method is: oil removing → washing → pickling → washing → painting protecting glue → quarter type → surface protection glued membrane to be milled removal → chemistry milling → washing → vibration finishing; titanium alloy cylindrical part adopt degree of depth chemistry milling technology be processed into thin-walled grid rib; and through once quarter type and chemical milling shaping, obtain the chemical milling wheel chamber casing with whole mount pad.
Described TA12, TA15 titanium alloy large-sized structural part degree of depth chemistry milling method, chemistry milling liquid formula and processing parameter as follows:
All the other are water;
Temperature 15 ~ 40 DEG C.
Described TA12, TA15 titanium alloy large-sized structural part degree of depth chemistry milling method, chemistry milling liquid process for preparation is as follows: Measurement accuracy trough volume, calculates various pharmaceutical chemicals consumption according to chemistry milling liquid composition; During preparation, the water of 1/4th of calculated amount is added in milling groove, open exhausting system and wind stirring system, add the nitric acid of 1/10th of calculated amount and the hydrofluoric acid of whole calculated amount, limit edged stirs, until fully mix, add the water of surplus and nitric acid and other additives: urea, butyl glycol ether and sodium lauryl sulphate, stir; After solution preparation, use after placing 24h.
Described TA12, TA15 titanium alloy large-sized structural part degree of depth chemistry milling method, as required add calculated amount 1/10th nitric acid and whole calculated amount hydrofluoric acid after, add titanium valve, the add-on of titanium valve is 1.5 ~ 2g/l; After titanium valve dissolves completely, then add the water of surplus and nitric acid and other additives.
Described TA12, TA15 titanium alloy large-sized structural part degree of depth chemistry milling method; when being coated with protecting glue; adopt spray gun spraying the first layer glued membrane 2 ~ 3 times; glue bearing areas should be completely covered; follow-up employing roller coating and ensure glued membrane without trickling after produce bubble; when reaching film thickness 30 ~ 40mm, utilizing electrical spark detector to detect glued membrane and whether there is leak source, and carrying out overall roller coating again to existing after benefit glue is carried out in leak source region.
Described TA12, TA15 titanium alloy large-sized structural part degree of depth chemistry milling method, adopts laser incising type during type at quarter, and starting point chemically milling should take off the beginning of glue surface, be smoothly transitted into boundary line, complete to ensure stiffening web place glued membrane, and quarter, molded line answered width uniformity, Glabrous stings.
Described TA12, TA15 titanium alloy large-sized structural part degree of depth chemistry milling method, during chemistry milling, the TA12 titanium alloy hang up properly dress or TA15 titanium alloy component immerse in milling groove, the forward and reverse rotation of timing done by part in chemistry milling liquid, motor speed is 120 ~ 130 revs/min, and every 15 ~ 30min changes the sense of rotation of a motor.
Described TA12, TA15 titanium alloy large-sized structural part degree of depth chemistry milling method, preferably, chemistry milling liquid temp controls at 26 ± 2 DEG C.
Described TA12, TA15 titanium alloy large-sized structural part degree of depth chemistry milling method, sharp edge is there is in part after chemistry milling, the treatment process of chemistry milling sharp edge is: adopt vibration burnishing working method to carry out process rounding to sharp edge, processing parameter is: vibrational frequency 40 ~ 50Hz, time of vibration 5h, 3 × 4 triangle corundum abrasives, granularity 120 order.
Described TA12, TA15 titanium alloy large-sized structural part degree of depth chemistry milling method, after chemistry milling, part wall thickness is 1 ± 0.1mm, and after chemistry milling, the hydrogen content of part is not more than 120ppm.
Advantage of the present invention and beneficial effect are:
1, titanium alloy of the present invention chemistry milling technology and technical process, part integral processing method, adopt chemistry milling structure to replace panel beating welding component parts, to meet engine design requirement.It not only fills up domestic titanium alloy large-sized entirety, thin-walled, fenestral fabric part depth chemistry milling technological gap, and has been widely used in the development and production of state's intrinsic motivation, improves more than 80% with mechanical workout phase specific efficiency.Part quality is reliable, stable performance, and feasible process is no abnormal, and service condition is good, technology maturation.
2, when titanium alloy chemistry milling is shaping, usually metal parts all to be immersed in specific chemical solution, under given conditions, to the different sites of commaterial, corrode selectively, thus obtain the desirable shape and size of part.Current titanium alloy chemistry milling technology is widely used on flat part, and the degree of depth is not more than 3mm.Chemistry milling of the present invention is carried out on large-size cylinder body class (non-tablet) part, the chemistry milling degree of depth is made to reach 9mm, chemistry milling structure is latticed, the not only chemistry milling degree of depth is dark, after part chemistry milling, dimensional homogeneity, the guarantee of structure profile, long-time chemistry milling glued membrane bonding force and non-finished surface excessive erosion etc. control difficulty greatly, and dimension precision requirement is high.
3, after the present invention proposes titanium alloy chemistry milling method, meet the technical indicator of design requirements, fundamentally avoid the distortion that mechanical workout is brought, solving welding brings mount pad strength of joint to reduce problem, achieve engine surface treatment technology by assisting the leap manufactured, and the present invention can be extended to other each model engine uses.
4, the present invention is compared with the chemistry milling technology of routine, has darker milling depth, complicated milling profile, chemistry milling homogeneity is better, precision is high, and roughness value, amount of hydrogen infiltration and deflection are little, is particularly suitable for the processing of the thin-wall complicated Flexible Deforming Parts of engine.
5, the present invention determines the method rationally removing chemistry milling point limit efficiently, namely will ensure that sharp limit is removed, also will ensure dimensional precision and the luminosity of part simultaneously, reduce production cost.Adopt high-level efficiency vibration finishing technology to be applied to the chamfering on chemistry milling point limit, increase work efficiency more than 10 times.
6, the invention belongs to the domestic chemistry milling technology that adopts first to process large-size cylinder body class titanium alloy material part, drastically increase the manufacturing technology level of China's engine, promote the progress of titanium alloy degree of depth chemistry milling technology, reach the chemistry milling process manufacturing technology level that international advanced engine uses.Meanwhile, social benefit of the present invention is also, its technology carried also can be applied to other product for civilian use such as space industry, combustion engine.
Accompanying drawing explanation
Fig. 1 is part cylindrical shell schematic diagram before chemistry milling.
Fig. 2 is part chemistry milling structural models picture.
Fig. 3 is partial enlargement chemistry milling surface tissue.
Fig. 4 is visual inspection schematic diagram.
Embodiment
The present invention mainly studies for TA12 or TA15 titanium alloy structure part degree of depth chemistry milling technology and application.Some important heating power parts of usual engine are all panel beating soldering group components, the part conventional fabrication processes such as the cylindrical shell of titanium alloy reinforcing in the past relate to plate forming, heat setting type, welding, mechanical workout etc., cannot ensure wall thickness (1 ± 0.1) mm and deflection for this complete processing of thin-walled parts.In addition, there is welding and bring mount pad strength of joint to reduce problem, member integrated rigidity is declined, and the production cycle is long.On the other hand, in order to ensure part strength, only having the wall thickness by increasing part to solve, thus structural weight is increased.For this reason, propose to adopt chemistry milling structure to replace panel beating welding component parts, to meet engine service requirements.
The chemistry milling of simple structure is just carried out in titanium alloy chemistry milling before domestic to flat part, milling depth is 3mm.The present invention needs the part of chemistry milling to be some important heating power parts of engine, part overall length 1086mm, internal diameter Φ 1050mm, cylindrical shell wall thickness 10mm, wall thickness 1 ± 0.1mm after chemistry milling.As shown in Figure 1, part cylindrical shell before chemistry milling of the present invention.As shown in Figure 2, part chemistry milling structural models.As shown in Figure 3, partial enlargement chemistry milling surface tissue.Titanium alloy plate of moderate thickness (10mm) cylindrical member adopt degree of depth chemistry milling technology be processed into thin-walled grid rib, and through a groove and the shaping chemical milling wheel chamber casing that can obtain with whole mount pad of chemical milling, be equivalent to eliminate some mount pad parts, number of components reduces 60% relatively, whole outer culvert casing only has 5 weld seams altogether, and Structure and energy simplifies in a large number.
In specific implementation process; TA12 or TA15 of the present invention titanium alloy large-sized structural part degree of depth chemistry milling method, its operational path is: oil removing → washing → pickling → washing → painting protecting glue (non-chemically milling face) → quarter type → surface protection glued membrane to be milled removal → chemistry milling → washing → vibration finishing.
1, chemistry milling liquid formula and processing parameter is determined
All the other are water;
Temperature (15 ~ 40) DEG C;
Wherein, urea is as stablizer, and butyl glycol ether is as wetting agent, and sodium lauryl sulphate is as tensio-active agent.In addition, titanium valve 1.5 ~ 2g/l can be added as required.
2, working method
Using acetone wipe surfaces before 2.1 part blasts, removing part because having enough to meet the need the secondary pollution caused.
2.2 check part blast rear surface quality, and part outside surface answers 100% blast.Blast pressure 0.1 ~ 0.2MPa, nozzle distance piece surface distance 200 ~ 300mm, silicon carbide granularity 150 ~ 200 order.
2.3 adopt spray gun spraying the first layer glued membrane 2 ~ 3 times, and glue bearing areas should be completely covered.Follow-up employing roller coating and ensure glued membrane without trickling after produce bubble.
2.4 when reaching film thickness 30 ~ 40mm, utilizes electrical spark detector to detect glued membrane and whether there is leak source, and carry out overall roller coating again to existing after benefit glue is carried out in leak source region.
2.5 gluing process need continuous seepage, between every twice, the timed interval does not allow more than 24h.
2.6 laser incising type starting points chemically milling should take off the beginning of glue surface, are smoothly transitted into boundary line, complete to ensure stiffening web place glued membrane, and quarter, molded line answered width uniformity, and Glabrous stings.Compared with craft type at quarter, laser incising type efficiency is high, precision is high.
2.7 chemistry milling liquid preparations: Measurement accuracy trough volume (should deduct liquid level with upper part), calculates various pharmaceutical chemicals consumption according to chemistry milling liquid composition.During preparation, the water of 1/4th of calculated amount is added in milling groove, open exhausting system and wind stirring system, add the nitric acid of 1/10th of calculated amount and the hydrofluoric acid of whole calculated amount, limit edged stirs, until fully mix, (effect adding titanium valve is: stablize tank liquor then can to add titanium valve as required, improve erosion uniformity, the add-on of titanium valve is 1.5 ~ 2g/l).After titanium valve dissolves completely, then add the water of surplus and nitric acid and other additives, stir.After needing to place 24h after solution preparation, can use.
2.8 immerse in milling groove by filling the part hung up properly, and chemistry milling process ensures that the forward and reverse rotation of timing done by part in chemistry milling liquid, and motor speed is 120 ~ 130 revs/min, and every 15 ~ 30min changes the sense of rotation of a motor.
The every 30min of 2.9 chemistry milling part goes out groove and checks glued membrane integrity, checks the associativity of complex structure surface glued membrane and matrix, notes abnormalities, stop chemistry milling, do and mend glue process.Inspection method is shown in Fig. 4, and chemically visual inspection is passed through in outside milling part and inner side respectively.
After 2.10 parts take off glue and repair sheets, when again entering groove chemistry milling, after needing first chemistry milling 10 ~ 15min, go out groove and check chemistry milling surface, and clear up remaining glue-line.
2.11 twice chemistry milling interval, more than more than 3 hours, need retain liquid with the inspection of pH test paper, ensure pH >=7, finally blot with the water of absorbent cotton by piece surface, guarantee without chemistry milling liquid residual.
2.12 newly join the content that chemistry milling liquid needs to chemically examine nitric acid and hydrofluoric acid.Before operation by the corrosion speed of the test piece test chemistry milling liquid brought with part.
2.13 chemistry milling liquid optimum tempss control at 26 ± 2 DEG C.
3, the treatment process of chemistry milling sharp edge
There is sharp edge in part, the present invention adopts vibration burnishing working method to replace the Mechanical Grinding Process usually adopted to carry out process rounding to sharp edge after chemistry milling.Processing parameter is: vibrational frequency 40 ~ 50Hz, time of vibration 5h, 3 × 4 triangle corundum abrasives, granularity 120 order.
4, after chemistry milling piece surface should smooth, do not have irregular etch vestige, spot corrosion and pit depth can not more than 0.02mm.The part processed should without any dirt, residue, surface film and other pollutents.Sharp outline answered by chemistry milling line, and whether profile, size meet drawing requirement.After chemistry milling, part wall thickness is 1 ± 0.1mm.Hydrogen content after chemistry milling is not more than 120ppm.
Below, by embodiment, the present invention is described in more detail.
Embodiment 1
In the present embodiment, the formula of chemistry milling liquid is as follows:
All the other are water;
Temperature 15 DEG C.
Motor speed is 120 revs/min, every 15min changes the sense of rotation of a motor, part wall thickness is from 10mm chemistry milling to 1.1mm, and hydrogen richness detected result is 65ppm, TA12 titanium alloy component smooth surface after chemistry milling, without irregular erosion mark mark, spot corrosion and pit.The piece surface processed is without any dirt, residue, surface film and other fifth wheels.Sharp outline answered by chemistry milling line, and whether profile, size meet drawing requirement.
Embodiment 2
In the present embodiment, the formula of chemistry milling liquid is as follows:
All the other are water;
Temperature 28 DEG C.
Motor speed is 125 revs/min, every 15min changes the sense of rotation of a motor, part wall thickness is from 10mm chemistry milling to 0.9mm, and hydrogen richness detected result is 55ppm, TA12 titanium alloy component smooth surface after chemistry milling, without irregular erosion mark mark, spot corrosion and pit.The piece surface processed is without any dirt, residue, surface film and other fifth wheels.Sharp outline answered by chemistry milling line, and whether profile, size meet drawing requirement.
Embodiment 3
In the present embodiment, the formula of chemistry milling liquid is as follows:
All the other are water;
Temperature 40 DEG C.
Motor speed is 130 revs/min, every 15min changes the sense of rotation of a motor, part wall thickness is from 10mm chemistry milling to 0.9mm, and hydrogen richness detected result is 45ppm, TA15 titanium alloy component smooth surface after chemistry milling, without irregular erosion mark mark, spot corrosion and pit.The piece surface processed is without any dirt, residue, surface film and other fifth wheels.Sharp outline answered by chemistry milling line, and whether profile, size meet drawing requirement.
Embodiment result shows, the present invention is applied in aircraft engine parts manufacture, effectively ensures quality product, meets design paper requirement.Meanwhile, increase substantially the process-cycle of part, improve more than 80% with mechanical workout phase specific efficiency, lower manufacturing cost, single-piece saves manufacturing cost more than about 130,000 yuan.This achievement is through the application more than 2 years, and part quality is reliable, stable performance, and feasible process is no abnormal, and service condition is good, technology maturation.
Claims (10)
1. TA12, TA15 titanium alloy large-sized structural part degree of depth chemistry milling method; it is characterized in that; the operational path of the method is: oil removing → washing → pickling → washing → painting protecting glue → quarter type → surface protection glued membrane to be milled removal → chemistry milling → washing → vibration finishing; titanium alloy cylindrical part adopt degree of depth chemistry milling technology be processed into thin-walled grid rib; and through once quarter type and chemical milling shaping, obtain the chemical milling wheel chamber casing with whole mount pad.
2., according to TA12, TA15 according to claim 1 titanium alloy large-sized structural part degree of depth chemistry milling method, it is characterized in that, chemistry milling liquid formula and processing parameter as follows:
3., according to TA12, TA15 according to claim 2 titanium alloy large-sized structural part degree of depth chemistry milling method, it is characterized in that, chemistry milling liquid process for preparation is as follows: Measurement accuracy trough volume, calculates various pharmaceutical chemicals consumption according to chemistry milling liquid composition; During preparation, the water of 1/4th of calculated amount is added in milling groove, open exhausting system and wind stirring system, add the nitric acid of 1/10th of calculated amount and the hydrofluoric acid of whole calculated amount, limit edged stirs, until fully mix, add the water of surplus and nitric acid and other additives: urea, butyl glycol ether and sodium lauryl sulphate, stir; After solution preparation, use after placing 24h.
4. according to TA12, TA15 according to claim 3 titanium alloy large-sized structural part degree of depth chemistry milling method, it is characterized in that, as required add calculated amount 1/10th nitric acid and whole calculated amount hydrofluoric acid after, add titanium valve, the add-on of titanium valve is 1.5 ~ 2g/l; After titanium valve dissolves completely, then add the water of surplus and nitric acid and other additives.
5. according to TA12, TA15 according to claim 1 titanium alloy large-sized structural part degree of depth chemistry milling method; it is characterized in that; when being coated with protecting glue; adopt spray gun spraying the first layer glued membrane 2 ~ 3 times; glue bearing areas should be completely covered, follow-up employing roller coating and ensure glued membrane without trickling after produce bubble, when reaching film thickness 30 ~ 40mm; utilize electrical spark detector to detect glued membrane and whether there is leak source, and carry out overall roller coating again to existing after benefit glue is carried out in leak source region.
6. according to TA12, TA15 according to claim 1 titanium alloy large-sized structural part degree of depth chemistry milling method, it is characterized in that, laser incising type is adopted during type at quarter, starting point chemically milling should take off the beginning of glue surface, be smoothly transitted into boundary line, complete to ensure stiffening web place glued membrane, and quarter, molded line answered width uniformity, Glabrous stings.
7. according to TA12, TA15 according to claim 1 titanium alloy large-sized structural part degree of depth chemistry milling method, it is characterized in that, during chemistry milling, the TA12 titanium alloy hang up properly dress or TA15 titanium alloy component immerse in milling groove, the forward and reverse rotation of timing done by part in chemistry milling liquid, motor speed is 120 ~ 130 revs/min, and every 15 ~ 30min changes the sense of rotation of a motor.
8., according to the titanium alloy large-sized structural part degree of depth of TA12, the TA15 one of claim 1 to 7 Suo Shu chemistry milling method, it is characterized in that, preferably, chemistry milling liquid temp controls at 26 ± 2 DEG C.
9. according to the titanium alloy large-sized structural part degree of depth of TA12, the TA15 one of claim 1 to 7 Suo Shu chemistry milling method, it is characterized in that, sharp edge is there is in part after chemistry milling, the treatment process of chemistry milling sharp edge is: adopt vibration burnishing working method to carry out process rounding to sharp edge, processing parameter is: vibrational frequency 40 ~ 50Hz, time of vibration 5h, 3 × 4 triangle corundum abrasives, granularity 120 order.
10., according to the titanium alloy large-sized structural part degree of depth of TA12, the TA15 one of claim 1 to 7 Suo Shu chemistry milling method, it is characterized in that, after chemistry milling, part wall thickness is 1 ± 0.1mm, and after chemistry milling, the hydrogen content of part is not more than 120ppm.
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| CN108326441A (en) * | 2018-02-09 | 2018-07-27 | 中国科学院西安光学精密机械研究所 | Laser etching type manufacturing method for large annular component |
| CN108374173A (en) * | 2018-04-19 | 2018-08-07 | 东北大学 | The environmental-friendly chemical milling solution and chemical milling method of single crystal super alloy precision castings |
| CN108385108A (en) * | 2018-04-19 | 2018-08-10 | 东北大学 | A kind of single crystal super alloy precision castings milling cream and its preparation method and application |
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| CN108385108B (en) * | 2018-04-19 | 2019-06-11 | 东北大学 | A kind of single crystal super alloy precision castings milling cream and its preparation method and application |
| CN108588718A (en) * | 2018-04-23 | 2018-09-28 | 中国航发哈尔滨东安发动机有限公司 | A kind of chemical milling method of titanium alloy precision forged blade |
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| CN111774814A (en) * | 2020-06-27 | 2020-10-16 | 上海航天智能装备有限公司 | Method for processing inner and outer grids of rocket short-shell wall plate |
| CN111774814B (en) * | 2020-06-27 | 2022-08-16 | 上海航天智能装备有限公司 | Method for processing inner and outer grids of rocket short-shell wall plate |
| CN113779711A (en) * | 2021-08-16 | 2021-12-10 | 中国航发贵阳发动机设计研究所 | Chemical milling process-based outer duct casing |
| CN114739290A (en) * | 2022-04-01 | 2022-07-12 | 上海拓璞数控科技股份有限公司 | Path planning method and system for line laser scanning chemical milling of rubber reticle |
| CN114739290B (en) * | 2022-04-01 | 2024-01-26 | 上海拓璞数控科技股份有限公司 | Path planning method and system for line laser scanning chemical milling of glue line |
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Address after: 110043 Dong TA street, Dadong District, Shenyang, Liaoning Province, No. 6 Patentee after: Chinese Hangfa Shenyang Liming Aero engine limited liability company Address before: 110043 Dong TA street, Dadong District, Shenyang, Liaoning Province, No. 6 Patentee before: Liming Aeroplane Engine (Group) Co., Ltd., Shenyang City |
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