CN105537879B - A kind of machining process for thin-walled lumen type magnesium lithium alloy part - Google Patents
A kind of machining process for thin-walled lumen type magnesium lithium alloy part Download PDFInfo
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- CN105537879B CN105537879B CN201610054306.4A CN201610054306A CN105537879B CN 105537879 B CN105537879 B CN 105537879B CN 201610054306 A CN201610054306 A CN 201610054306A CN 105537879 B CN105537879 B CN 105537879B
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- 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
Abstract
The present invention relates to a kind of machining process for thin-walled lumen type magnesium lithium alloy part, include at least following steps：1）Lower bar；2）Turning bores, vehicle deep hole；3）External Shape is rough milled, unilateral surplus 2mm is stayed；4）By part requirements to step 2）Deep hole into line number milling cavity；5）Part is heat-treated, first Cleaning of Parts is totally placed in air with gasoline and is thoroughly dried, ensures piece surface chipless, by part after oven heat to 90 DEG C of temperature, heat preservation 3h, then it is air-cooled to room temperature；6）To half finish-milling of piece surface；7）Subzero treatment is carried out to part, the broken small or dust-like chip on part is cleaned out before shove charge；Part is put into household freezer after 195 DEG C of liquid nitrogen, 5~6h of heat preservation again, it is air-cooled to arrive room temperature；8）Finish-milling piece surface, by the back gauge size requirement finish-milling of piece surface；9）Finish.It solves the safety and quality problems in the processing of thin-walled lumen type magnesium lithium alloy part, improves resistance to corrosion.
Description
Technical field
The present invention relates to a kind of machining process, especially a kind of machineries for thin-walled lumen type magnesium lithium alloy part to add
Work method.It is related to the field of machining of magnesium lithium alloy part.
Background technology
" magnesium alloy is applied and industrialization " be national " 11th Five-Year " in the works give priority to project.Magnesium is content on the earth
One of very abundant element, and with many excellent performances.The density of magnesium alloy is 1.8g/cm3, lighter than aluminium alloy 36%, zinc
Alloy is light 73%, steel is light by 77%, is the structural metallic material that weight is most light in practical metal, in the case of same intensity, magnesium
The parts of alloy can be made more frivolous than the parts of plastics, aluminium；Magnesium alloy is smaller than the cutting resistance of other metals, cutting resistance
Power be aluminium alloy O.56, the 0.43 of brass, cast iron 0.29, it is possible to improve machining efficiency；Magnesium alloy, which has, to be held
Easy regenerated characteristic, the new material as substitution plastics, aluminium and iron are concerned.The manufacture history of magnesium alloy has had nearly 100
Year, but since perishable and price is high, be never used widely.And with the exploitation of corrosion-resistant magnesium alloy and in the world
The increase of magnesium production base, cost of material also decrease, and magnesium alloy is favored again.As weaponry is to light weight
Change, high existence force direction development, magnesium alloy is widely used to the fields such as weaponry, Aeronautics and Astronautics.
Since the specific heat height and thermal conductivity of magnesium are good, the heat for the generation that rubs can promptly be diffused into each portion of part
Point, therefore, it not will produce higher temperature when carrying out machining to magnesium alloy.But in high cutting speed and the amount of feeding
In the case of big, heat caused by part is also considerable, it is likely that because temperature is excessively high and the deformation that is distorted；Magnesium
The resistance to corrosion of alloy is poor, the chip and fine powder generated during being machined to magnesium alloy have burning or
The danger of explosion.The chip size that the roughing stage generates is larger, can be rapidly by the mill of generation since the thermal conductivity of magnesium is very high
Chafing is scattered and disappeared away, it is difficult to reach ignition temperature, this stage accident occurs less.But in finishing stage, due to generated
Tiny chip and fine powder have prodigious specific surface area, thus easily reach ignition temperature and cause thing of burning or explode
Therefore.In addition, feed rate or bite are too small；Dead time in process is long；The relief angle and chip space mistake of cutter
It is small；Very high cutting speed is used in the case where not using cutting fluid；Cutter and the dissimilar metal being nested in casting
There may be sparks when core lining bumps against；Magnesium chip is gathered etc. around or below lathe, is all the factor to cause the accident.Again
Person, relative humidity is higher, then the possibility caught fire is bigger.
Invention content
The object of the present invention is to provide a kind of machining process for thin-walled lumen type magnesium lithium alloy part, it can be solved
The certainly safety and quality problems appeared in thin-walled lumen type magnesium lithium alloy part machinery process, and it is anti-to improve magnesium lithium alloy
Corrosive power.This method meets the processing request of such thin-walled lumen type magnesium lithium alloy part.
The technical scheme is that：A kind of machining process for thin-walled lumen type magnesium lithium alloy part, feature
It is：It includes at least following steps：
1）Lower bar；
2）Turning bores, vehicle deep hole；
3）External Shape is rough milled, unilateral surplus 2mm is stayed；
4）By part requirements to step 2）Deep hole into line number milling cavity；
5）Part is heat-treated, first Cleaning of Parts is totally placed in air with gasoline and is thoroughly dried, ensures part
Surface chipless, by part after oven heat to 90 DEG C of temperature, heat preservation 3h, then it is air-cooled to room temperature；
6）To half finish-milling of piece surface, it is 1mm` to stay finish-milling surplus unilateral, and ensures the vertical plane degree of being mutually perpendicular to of part
0.05mm；
7）Subzero treatment is carried out to part, the broken small or dust-like chip on part is cleaned out before shove charge；Again by zero
Part is put into household freezer after -195 DEG C of liquid nitrogen, 5~6h of heat preservation, air-cooled to arrive room temperature；
8）Finish-milling piece surface by the back gauge size requirement finish-milling of piece surface, and ensures that the vertical plane of part mutually hangs down
Straight 0.03mm, soffit plane degree 0.02mm；
9）Finish.
The step 6）With step 7）Between further include first time aided process procedure of processing, i.e., to parts locally large trough
Milling Process is carried out with macropore；The step 8）With step 9）Between further include second of aided process procedure of processing, i.e., pair
Parts locally small boss and aperture carry out Milling Process.
Vehicle, milling equipment must clean up in each step, without miscellaneous bits；Cutting tool wants sharp and smooth；Part flow
During turning, for each step in part flows through journey, part water or ultrasonic cleaning are clean, soak trivalent after confirming drying
Chromium passivating agent solution.
The step 2）When Vehicle Processing, lathe rotating speed should be less than 400r/min, and the amount of feeding should be greater than 0.5mm；Lathe tool material
For hard alloy or high-speed steel tool, relief angle α=12~15 °, anterior angle γ=8~12 ° of lathe tool；When drilling deep hole, using less than φ
The drill bit of 20mm is processed, and often bores timely withdrawing after depth 2mm, and feed again after drill bit chip is cleaned up.
The step 4）Number milling cavity selects lathe rotating speed to be less than 400r/min in processing, and the amount of feeding should be greater than
0.5mm, each cutting depth are not more than 4mm, and it is cooling to carry out strength with water or emulsion.
The step 9）Finish-milling piece surface, in finishing, tooling pressing plate is compressed using glass laminate；Lathe rotating speed is answered
Less than 600r/min, the amount of feeding should be greater than 0.1mm；Milling cutter parameter is：Anterior angle γ=12~15 °, relief angle α=13~18 °, knife
Tooth number Z n=2.
The step 2）When Vehicle Processing, cooled down using mineral oil coolant liquid, mineral oil free acid content should be less than 0.2%.
The part is in processing, the placing fire extinguisher material in part processing work region.
The fire distinguisher is D grades of fire extinguishers, fire blanket or magnesia.
Advantageous effect of the invention：The present invention be directed to a kind of methods that the part of magnesium lithium alloy material is processed, and pass through
To the characteristic and Analysis of Machinability of material, and according to factors such as process equipment, facility, environmental aspects, formulate rational magnesium lithium
Alloy part processing technology.The processing technology passes through to the progress such as the process such as equipment, cutter and heat treatment and Environmental security
Special controlling ensure that the processing quality of magnesium lithium alloy thin-wall part；By each step in part flows through journey, part water or
Ultrasonic cleaning is clean, soaks trivalent chromium passivation agent solution after confirming drying and subzero treatment solves Anticorrosion Problems；
Strength is cooling, and guarantee chip removal is smooth using being carried out with water or emulsion in process, cooled down using mineral oil coolant liquid and
Placing fire extinguisher material in part processing work region, ensures the safety of process, avoids accident, improve safety
Energy.
Description of the drawings
With reference to embodiment and embodiment attached drawing, the present invention is further described, but not as a limitation of the invention/
Fig. 1 is processed thin-walled lumen type magnesium lithium alloy design of part schematic diagram；
Fig. 2 is the vertical view of Fig. 1.
In figure：1, part height；2, notch；3, threaded hole；4, periphery wall thickness；5, bottom thickness；6, part length；7, convex
Platform；8, aperture；9, macropore；10, boss；11, part width.
Specific implementation mode
Embodiment 1
A kind of machining process for thin-walled lumen type magnesium lithium alloy part includes at least following steps：
1）Lower bar；
2）Turning bores, vehicle deep hole；
3）External Shape is rough milled, unilateral surplus 2mm is stayed；
4）By part requirements to step 2）Deep hole into line number milling cavity；
5）Part is heat-treated, first Cleaning of Parts is totally placed in air with gasoline and is thoroughly dried, ensures part
Surface chipless, by part after oven heat to 90 DEG C of temperature, heat preservation 3h, then it is air-cooled to room temperature；
6）To half finish-milling of piece surface, it is 1mm` to stay finish-milling surplus unilateral, and ensures the vertical plane degree of being mutually perpendicular to of part
0.05mm；
7）Subzero treatment is carried out to part, the broken small or dust-like chip on part is cleaned out before shove charge；Again by zero
Part is put into household freezer after -195 DEG C of liquid nitrogen, 5~6h of heat preservation, air-cooled to arrive room temperature；
8）Finish-milling piece surface by the back gauge size requirement finish-milling of piece surface, and ensures that the vertical plane of part mutually hangs down
Straight 0.03mm, soffit plane degree 0.02mm；
9）Finish.
The material of above-mentioned part is magnesium lithium alloy.
Embodiment 2
A kind of machining process for thin-walled lumen type magnesium lithium alloy part includes the following steps：
1）Lower bar；
2）Turning bores, vehicle deep hole；In Vehicle Processing, lathe rotating speed should be less than 400r/min, and the amount of feeding should be greater than
0.5mm；Lathe tool material is hard alloy or high-speed steel tool, relief angle α=12~15 °, anterior angle γ=8~12 ° of lathe tool；Drilling deep hole
When, it is processed using the drill bit less than φ 20mm, often bores timely withdrawing after depth 2mm, and after drill bit chip is cleaned up again
Secondary feed be easy to cause magnesium chips accumulation and causes to catch fire when avoiding drilling deep hole；When Vehicle Processing, dropped using mineral oil coolant liquid
Temperature, cutting oil should have lower viscosity, in order to prevent Fu Shi Magnesium alloys, and mineral oil free acid content should be less than 0.2%；
3）External Shape is rough milled, unilateral surplus 2mm is stayed；
4）By part requirements to step 2）Deep hole into line number milling cavity；Lathe rotating speed is selected to be less than 400r/ in processing
Min, the amount of feeding should be greater than 0.5mm, and each cutting depth is not more than 4mm, carry out strength cooling with water or emulsion, ensure chip removal
It is smooth；
5）Part is heat-treated, first Cleaning of Parts is totally placed in air with gasoline and is thoroughly dried, ensures part
Surface chipless, by part after oven heat to 90 DEG C of temperature, heat preservation 3h, then it is air-cooled to room temperature；
6）To half finish-milling of piece surface, it is 1mm` to stay finish-milling surplus unilateral, and ensures the vertical plane degree of being mutually perpendicular to of part
0.05mm；
7）First time aided process procedure of processing carries out Milling Process to parts locally large trough and macropore；
8）Subzero treatment is carried out to part, the broken small or dust-like chip on part is cleaned out before shove charge；Again by zero
Part is put into household freezer after -195 DEG C of liquid nitrogen, 5~6h of heat preservation, air-cooled to arrive room temperature；
9）Finish-milling piece surface by the back gauge size requirement finish-milling of piece surface, and ensures that the vertical plane of part mutually hangs down
Straight 0.03mm, soffit plane degree 0.02mm；Because magnesium alloy materials are softer, in finishing, tooling pressing plate uses glass laminate pressure
Tightly；Lathe rotating speed should be less than 600r/min, and the amount of feeding should be greater than 0.1mm；The selection anterior angle of milling cutter should suitably increase, and
Appropriate to increase chip curling groove space, milling cutter parameter is：Anterior angle γ=12~15 °, relief angle α=13~18 °, number of teeth Zn=2；
10）Second of aided process procedure of processing carries out Milling Process to parts locally small boss and aperture；
11）Finish.
Vehicle, milling equipment must clean up in each step, without miscellaneous bits；Cutting tool wants sharp and smooth；Part flow
During turning, for each step in part flows through journey, part water or ultrasonic cleaning are clean, soak trivalent after confirming drying
Chromium passivating agent solution, the solution category Novel environment-friendlymaterial material can form the isolation strip with protective effect, resistance on magnesium lithium alloy surface
Every contact of the corrosive medium with alloy.
The part is in processing, the placing fire extinguisher material in part processing work region；The fire distinguisher is D grades and goes out
Firearm, fire blanket or magnesia.D grades of fire extinguishers：Its material is usually using sodium chloride based powders or a kind of stone by Passivation Treatment
Black based powders, principle are to be caught fire by excluding oxygen to suffocate；Fire blanket or magnesia：Small area, which is caught fire, can be used its covering,
Principle is also to be caught fire by excluding oxygen to suffocate.In short, no matter when, cannot all use water or any other standard
Fire extinguisher goes to put out to catch fire caused by magnesium.Water, other liquid, carbon dioxide, foam etc. can all rise anti-with the magnesium being burning
It answers, and is to reinforce the intensity of a fire rather than inhibit the intensity of a fire.
Simultaneously：In process, it should be noted that item：Cutting tool must not scratched, burr and turned, if knife
Tool cut other metals, even if cutting angle will sharpen if change or again with oilstone honing；Avoid magnesium lithium alloy part
Directly contacted with corrosive medium；Cutter is not allowed to stop on workpiece；Forbid to smoke in processing work area, lights a fire, welds
It connects.
The method of the present invention is suitable for thin-walled lumen type magnesium lithium alloy part；The machinery of this thin-walled lumen type magnesium lithium alloy part adds
Work method ensures the processing quality of magnesium lithium alloy thin-wall part, solves safety problem and part flow in magnesium lithium alloy processing
Anticorrosion Problems during turning, meet the processing request of such magnesium lithium alloy thin-walled parts.
Embodiment 3
For processing part, material is magnesium lithium alloy, and design of part is as shown in Figures 1 and 2, spare part outside measurement part
Highly 1 is 39mm, part length 6 is 69mm, part width 11 is 45mm, and periphery wall thickness 4 is only 2.5mm, and bottom thickness 5 is
2mm, end face have 1 notch 2, feature bottom to have 19 a diameter of Φ 24mm of macropore, have 48 sizes of aperture to be on 4 boss 10
Φ3mm×30mm（Depth）, it is M2-6H to have 23 sizes of threaded hole on 2 boss 7（Through-hole）.
It is analyzed from design of part, spare part outside measurement is larger, and periphery wall thickness is only 2.5mm, bottom thickness 2mm, belongs to allusion quotation
The thin-walled lumen type part of type, design of part poor rigidity are yielding；4 hole diameters are 10 with hole depth rate, belong to elongated hole, processing
Shi Rongyi magnesium chips is accumulated and causes to catch fire.In addition for magnesium lithium alloy compared with common magnesium alloy, density is lower, and specific strength is more
Greatly, active higher, it is easier to catch fire and corrode in process.In addition, magnesium lithium alloy belongs to new material, without corresponding
National standard, hot-working and cold working all do not have ripe experience and can use for reference.Therefore, the Major Difficulties of processing are how to protect
The processing quality for demonstrate,proving magnesium lithium alloy thin-wall part, solves the problems, such as that magnesium lithium alloy process safety and part flow through the anticorrosion in journey
Problem.
The magnesium lithium alloy part is processed using the method for the present invention to include the following steps：
1）Lower bar；
2）Turning, brill, vehicle deep hole φ 38H10mm, depth 36mm；
3）Four directions is rough milled, unilateral surplus 2mm is stayed；
4）Number milling cavity ensures to require shown in Fig. 1, Fig. 2；
5）Heat treatment（Timeliness）, first Cleaning of Parts is totally placed in air with gasoline and is thoroughly dried, ensures piece surface
Chipless prevents part heated combustion.In oven heat to 90 DEG C of temperature, keep the temperature 3h, air-cooled to room temperature.Purpose is to stablize group
It knits, eliminates cutting stress；
6）Half finish-milling, six face ensures six face back gauge sizes, and it is 1mm to stay finish-milling surplus unilateral, and ensures that six faces are mutually perpendicular to
Spend 0.05mm；
7）Aided process is processed, milling notch 2, and it is 1mm to bore macropore 9 to stay finish-milling macropore surplus unilateral；
8）Subzero treatment will clean out the broken small or dust-like chip on part before shove charge.Again by magnesium lithium alloy part
Household freezer is put into -195 DEG C of liquid nitrogen, keeps the temperature 5~6h, it is air-cooled to arrive room temperature.Subzero treatment process can refining alloy crystal grain, reduce it is inclined
Analysis each contributes to eliminate the galvanic couple gross area inside alloy, improves magnesium lithium alloy corrosion resistance；
9）Six face of finish-milling ensures part height 1, part length 6, the size of part width 11 and periphery shown in diagram 1
Wall thickness（Each back gauge thickness）4, bottom thickness 5, and ensure each face degree of being mutually perpendicular to 0.03mm, soffit plane degree 0.02mm；
10）Milling cavity stays two boss 7,4 boss 10 of milling, fixed 48 centers of aperture and the φ 3mm × 30mm that drill（Hole
It is deep）, thread Pilot hole, tapping M2-6H, finish-milling macropore 9 are simultaneously bored in fixed 2 threaded hole centers 3；
11）Finish.
The step 1）~4）, step 6）~7）, step 9）~10）Part process operation specification：1）Before part processing, first
Lathe iron filings are thoroughly cleaned up；2）Cutting tool will keep sharp and smooth, it is necessary to not scratch, burr and turned.Such as
The excessively other metals of fruit Tool in Cutting, even if cutting angle will sharpen if change or again with oilstone honing；3）Magnesium lithium is avoided to close
Gold is directly contacted with corrosive medium, can prevent the corrosion of magnesium lithium alloy.In part flows through journey, part water or ultrasonic wave are clear
Wash clean soaks trivalent chromium passivation agent solution after confirming drying.The solution category Novel environment-friendlymaterial material, can be on magnesium lithium alloy surface
Form the isolation strip with protective effect, contact of the barrier corrosive medium with alloy；4）Cutter is not allowed to stop in workpiece
On；5）Large inflow is used under normal circumstances, to generate the chip of larger thickness；6）Forbid smoking, life in processing work area
Fire, welding；7）The placing fire extinguisher material in part processing work region（D grades of fire extinguishers, fire blanket or magnesia）.
The step 2）It is easy to cause magnesium chips accumulation when rough turn deep hole φ 38H10mm, depth 36mm and causes to catch fire, is processing
When pay attention to：1）Select lathe rotating speed 380r/min, amount of feeding 0.6mm；2）Should prebored hole be carried out using the drill bit of φ 8mm, then used
The drill bit counterboring of φ 15mm.When with the bit bore of φ 8mm, often bore depth 2mm or so rear timely withdrawing, and greatly by drill bit magnesium
Anterior angle γ=10 °, and protect feed again after bits clean up；3）It is hard alloy or high-speed steel tool, cutter to select lathe tool material
There should be larger relief angle α=13 ° and sharp compared with cutter is held；4）Cooled down using mineral oil coolant liquid, cutting oil should have relatively low
Viscosity, Fu Shi Magnesium alloys in order to prevent, mineral oil free acid content should be less than 0.2%.
The step 4）Number milling cavity pays attention to selecting lathe rotating speed 380r/min, the amount of feeding in processing because cavity is deeper
0.6mm ensures each cutting depth in 3mm or so, and cutter wants sharp, carries out strength cooling with water or emulsion, ensures
Chip removal is smooth.
The step 9）Milling Machining, because magnesium alloy materials are softer, tooling pressing plate is compressed using glass laminate when finishing；Machine
Bed selection of speed 550r/min, amount of feeding 0.2mm；The selection anterior angle of milling cutter should suitably increase, and suitably increase volume
Consider slot space to be worth doing.Its select the reference value of cutter parameters for：Anterior angle γ=13 °, relief angle α=15 °, number of teeth Zn=2.
The step 10）48 sizes of aperture of processing cause to catch fire to be easy to cause magnesium chips accumulation when φ 3mm × 30mm,
It should be selected with interior cold drill bit in processing, drill bit magnesium chips is cleaned and done in the rear timely withdrawings of 2mm or so by each depth of cut
Feed again after net, while also to keep cutter sharp.
The well-known components and common structure of the component and the structure category industry that the present embodiment does not describe in detail or common hand
Section, does not describe one by one here.
Claims (1)
1. a kind of machining process for thin-walled lumen type magnesium lithium alloy part, it is characterized in that：It includes at least following steps：
1）Lower bar；
2）Turning bores, vehicle deep hole；
3）External Shape is rough milled, unilateral surplus 2mm is stayed；
4）By part requirements to step 2）Deep hole into line number milling cavity；
5）Part is heat-treated, first Cleaning of Parts is totally placed in air with gasoline and is thoroughly dried, ensures piece surface
Chipless, by part after oven heat to 90 DEG C of temperature, heat preservation 3h, then it is air-cooled to room temperature；
6）To half finish-milling of piece surface, it is 1mm ` to stay finish-milling surplus unilateral, and ensures the vertical plane degree of being mutually perpendicular to 0 of part
.05mm；
7）Subzero treatment is carried out to part, the broken small or dust-like chip on part is cleaned out before shove charge；Part is put again
Enter household freezer after -195 DEG C of liquid nitrogen, 5~6h of heat preservation, it is air-cooled to arrive room temperature；
8）Finish-milling piece surface by the back gauge size requirement finish-milling of piece surface, and ensures that the vertical plane of part is mutually perpendicular to 0
.03mm, 0 .02mm of soffit plane degree；
9）Finish；
Vehicle, milling equipment must clean up in each step, without miscellaneous bits；Cutting tool wants sharp and smooth；Part flows through
Cheng Zhong, for each step in part flows through journey, part water or ultrasonic cleaning are clean, and it is blunt to soak trivalent chromium after confirming drying
Agent solution；
The step 2）When Vehicle Processing, lathe rotating speed should be less than 400r/min, and the amount of feeding should be greater than 0 .5mm；Lathe tool material is hard
Matter alloy or high-speed steel tool, relief angle α=12~15 °, anterior angle γ=8~12 ° of lathe tool；When drilling deep hole, using less than φ 20mm
Drill bit be processed, often bore timely withdrawing after depth 2mm, and feed again after drill bit chip is cleaned up；When Vehicle Processing, adopt
Cooled down with mineral oil coolant liquid, mineral oil free acid content should be less than 0 .2%；
The step 4）Number milling cavity selects lathe rotating speed to be less than 400r/min in processing, and the amount of feeding should be greater than 0 .5mm, often
Secondary cutting depth is not more than 4mm, and it is cooling to carry out strength with water or emulsion；
The step 9）Finish-milling piece surface, in finishing, tooling pressing plate is compressed using glass laminate；Lathe rotating speed should be less than
600r/min, the amount of feeding should be greater than 0 .1mm；Milling cutter parameter is：Anterior angle γ=12~15 °, relief angle α=13~18 °, cutter tooth
Number Zn=2；
The step 6）With step 7）Between further include first time aided process procedure of processing, i.e., to parts locally large trough and big
Hole carries out Milling Process；The step 8）With step 9）Between further include second of aided process procedure of processing, i.e., to part
Local small boss and aperture carry out Milling Process；
The part is in processing, the placing fire extinguisher material in part processing work region；
The fire distinguisher is D grades of fire extinguishers, fire blanket or magnesia.
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| CN107553061A (en) * | 2017-09-28 | 2018-01-09 | 贵州航天电子科技有限公司 | A kind of processing method of austenite stainless steel part |
| CN108274191B (en) * | 2017-12-27 | 2020-08-07 | 贵州航天电子科技有限公司 | Method for processing radiator cover plate of high-power device |
| CN109079439B (en) * | 2018-08-22 | 2020-08-18 | 杭州煜昊科技有限公司 | Processing method of hysteromyoma drill |
| CN109128728A (en) * | 2018-11-17 | 2019-01-04 | 景德镇兴航科技开发有限公司 | A kind of consumption fuel tank thin wall processing technology |
| CN110102969A (en) * | 2019-04-19 | 2019-08-09 | 贵州永红航空机械有限责任公司 | A kind of aluminium alloy cartridge type fuel tank inner cylinder processing method |
| CN111531333B (en) * | 2020-05-11 | 2022-02-11 | 三河建华高科有限责任公司 | Method for processing special-shaped thin-wall shell part |
| CN111958186B (en) * | 2020-08-18 | 2021-11-30 | 天津航天机电设备研究所 | Method for reducing magnesium-lithium alloy processing temperature by low-temperature device and application |
| CN113695842A (en) * | 2021-07-26 | 2021-11-26 | 建湖县益铭液压机械有限公司 | Process method capable of effectively reducing deformation of pipe joint parts |
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| JP2004034208A (en) * | 2002-07-02 | 2004-02-05 | Ishikawajima Harima Heavy Ind Co Ltd | Cutting method of thin wall member |
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| CN101780557B (en) * | 2010-02-09 | 2011-12-14 | 惠阳航空螺旋桨有限责任公司 | Numerical control milling process method of thin-walled part die cavity |
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