CN106271902A - A kind of material that increases manufactures aluminium alloy pipeline accessory inner surface finishing method - Google Patents
A kind of material that increases manufactures aluminium alloy pipeline accessory inner surface finishing method Download PDFInfo
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- CN106271902A CN106271902A CN201610857028.6A CN201610857028A CN106271902A CN 106271902 A CN106271902 A CN 106271902A CN 201610857028 A CN201610857028 A CN 201610857028A CN 106271902 A CN106271902 A CN 106271902A
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- Prior art keywords
- pipeline
- polishing
- aluminium alloy
- finishing method
- abrasive
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
- B24B1/00—Processes of grinding or polishing; Use of auxiliary equipment in connection with such processes
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- ing And Chemical Polishing (AREA)
- Finish Polishing, Edge Sharpening, And Grinding By Specific Grinding Devices (AREA)
Abstract
The present invention discloses a kind of material that increases and manufactures the finishing method of aluminium alloy pipeline accessory inner surface, finishing method includes abrasive Flow rough polishing step and chemical reagent finishing polish step, wherein: abrasive Flow rough polishing step includes: polished aluminium alloy pipeline part is put into fixture, subsequently fixture is fixed in abrasive Flow equipment；Open abrasive Flow equipment so that abrasive material flows through the pipeline of aluminium alloy pipeline part；Take out workpiece, the abrasive material remained in removing the pipeline of aluminium alloy pipeline part；Chemical reagent finishing polish step includes: polished pipeline is connected to chemical polishing reagent inlet pipeline and outlet conduit Circulated polishing；Clear water rinses, and dries.Comprehensive mechanical of the present invention polishing and chemically polishing method, be particularly well-suited to increase material and manufacture baroque pipe piece, the roughness of inner surface of pipe fitting is greatly lowered, effectively smooths inner surface of pipe fitting.
Description
Technical field
The present invention relates to a kind of inner surface finishing method, be particularly well-suited to increase material and manufacture aluminium alloy pipeline accessory inner surface
Polishing.
Background technology
Increasing material manufacture is the high-new manufacturing technology of one based on material stacking method, a kind of is no longer necessary to traditional cutter, folder
Tool and lathe just can create arbitrary shape.It collects mechanical engineering, CAD, reverse Engineering Technology, Layered Manufacturing Technology, numerical control
Technology, material science, laser technology, can be changed into automatically, directly, quickly and accurately by design philosophy and have one
Determine the prototype of function or directly manufacture part.
Selective laser fusing increases material as metal current and manufactures one of common three kinds of modes, can realize high accuracy, complexity portion
Part is integrally formed, is particularly well-suited to manufacture and has the parts such as complicated inner cavity structural al alloy, and integrally formed aluminum is melted in selective laser
Alloy complexity pipeline configuration because of its have that loss of weight, high-performance (function), process time be short and low cost and traditional diamond-making technique without
Legal system such as makes at the advantage, is widely used in aircraft and spacecraft.GE, Air Passenger, Sai Feng, Air China's industry, space flight section work, middle ship at present
The enterprise both at home and abroad such as heavy industry has started to even batch and uses selective laser fusing to shape alloy product.Increase material and manufacture complicated pipeline
Structure member is with the obvious advantage, but also has limitation, and workpiece surface roughness is exactly one of them important limiting factors, the most right
In pipe interior.Using traditional sandblasting (ball) method polishing pipe interior, sand (ball) material of use enters cutting force in pipeline
Significantly weaken, maybe cannot be efficiently entering internal pipeline, cause having the pipe interior polishing effect that labyrinth receives the award poor, even
Without polishing effect, it is impossible to reach the use requirement of workpiece.
For selective laser fusing increases material manufacture aluminum alloy complex pipeline configuration parts, after manufacture, interior surface thereof is thick
Rugosity Ra is typically between 20-30 μm, and there is caducous fusion or half metal powder granulates merged, if do not carried out on surface
Polishing, then have a strong impact on the using effect of part.Because the structure of pipe fitting is complicated, existing inner surface polishing technology the most all cannot be fitted
With.Increasing material and manufacture the initial inside surface roughness of part too greatly, if directly using chemical polishing, surface of polished is uneven, throws
Optical uniformity is relatively difficult to ensure card, and removal amount is bigger.
Thus, a kind of finishing method being applicable to increase material manufacture aluminium alloy pipeline accessory inner surface is proposed so that in pipeline
Surface is smoother thus meets higher workpiece and uses requirement, is those skilled in the art's technical barriers urgently to be resolved hurrily.
Summary of the invention
The purpose of the present invention is to propose to the finishing method of a kind of inner surface, can effectively reduce increasing material and manufacture aluminium alloy pipeline
The roughness of accessory inner surface.
The present invention is attained in that by following technical solution
A kind of material that increases manufactures the finishing method of aluminium alloy pipeline accessory inner surface, including abrasive Flow rough polishing step and chemistry
Reagent finishing polish step, wherein:
Abrasive Flow rough polishing step includes:
Polished aluminium alloy pipeline part is fixed in abrasive Flow equipment；
Open abrasive Flow equipment so that abrasive material flows through the pipeline of aluminium alloy pipeline part；
Take out workpiece, the abrasive material remained in removing the pipeline of aluminium alloy pipeline part；
Chemical reagent finishing polish step includes:
Polished pipeline is connected to chemical polishing reagent inlet pipeline and outlet conduit Circulated polishing；
Clear water rinses, and dries.
On the basis of above-mentioned steps, the present invention can also comprise the following steps:
Preferably, described abrasive Flow equipment is fluid pressurized acceleration mechanism.
Preferably, the operating pressure of described abrasive Flow equipment is 5-20MPa, and abrasive material uniformly circulates 5-10min.
Preferably, the granularity of described abrasive material is 100-320 mesh.
Preferably, described abrasive material is carborundum, aluminium oxide, boron carbide or diamond particles.
Preferably, polished pipeline is connected to chemical polishing reagent inlet pipeline and outlet conduit described and circulate throwing
Before light, also include the step configuring chemical polishing reagent.
Preferably, the consisting of of described chemical polishing reagent: phosphoric acid, Fluohydric acid., nitric acid and glacial acetic acid.
Preferably, described chemical polishing reagent comprises 40-50% phosphoric acid, 15-20% Fluohydric acid., 15-20% nitric acid, 5-
10% glacial acetic acid.
Preferably, the time of described Circulated polishing is 5-15min.
Preferably, the time that described clear water rinses is 3-5min.
The inner surface finishing method that the present invention provides, is particularly well-suited to what structure finishing method complicated, existing cannot be suitable for
Increase material and manufacture the polishing program of aluminium alloy pipeline accessory inner surface；The present invention can effectively reduce the roughness of accessory inner surface,
After abrasive Flow rough polishing, by big protruding removals such as half metal powder granulates merged, the roughness Ra of accessory inner surface can
Reach below 6.3 μm, then after chemical reagent finishing polish, polishing uniformly, the roughness Ra of accessory inner surface up to 3.2 μm with
Under, can make to increase material manufacture aluminium alloy pipeline part whereby and be applied to widely field and position, the development to science and technology is played
Impetus.
Accompanying drawing explanation
Fig. 1 is the flow chart that the present invention manufactures aluminium alloy pipeline accessory inner surface finishing method for increasing material；
Fig. 2 is the structure diagram of the abrasive Flow equipment that one embodiment of the invention relates to.
Detailed description of the invention
The open material that increases of the present invention manufactures the finishing method of aluminium alloy pipeline accessory inner surface, and comprehensive mechanical polishing and chemistry are thrown
Light method, be particularly well-suited to increase material manufacture baroque, use existing interior polishing technology can not realize or poor effect
Aluminium alloy pipeline accessory inner surface polishing process in, the roughness of inner surface of pipe fitting is greatly lowered, effectively smooths pipe fitting
Inner surface.
Suitably with reference to Fig. 1, inner surface finishing method disclosed by the invention, mainly include abrasive Flow rough polishing step S10 and
Chemical reagent finishing polish step S20.Wherein:
Abrasive Flow rough polishing step S10 may include that
S11: polished aluminium alloy pipeline part is fixed in abrasive Flow equipment；
S12: open abrasive Flow equipment so that abrasive material flows through the pipeline of aluminium alloy pipeline part；
S13: take out workpiece, uses the abrasive material that compressed air air gun remains in blowing down the pipeline of aluminium alloy pipeline part；
Chemical reagent finishing polish step S20 includes:
Polished pipeline is connected to chemical polishing reagent inlet pipeline and outlet conduit Circulated polishing by S22；
S23 clear water rinses, and dries.The time that described clear water rinses is 3-5min.
Specifically, before step S22, also include the step of S21 configuration chemical polishing reagent.If but operation scene has
Suitably chemical polishing reagent carrys out use, then the present invention can remove the step of configuration chemical polishing reagent from.
Abrasive Flow equipment of the present invention, can be any fluid pressurized acceleration mechanism, and Fig. 2 is a kind of supercharging abrasive particle discharge orifice
Inner surface burnishing device.This device includes organizing unit more, and each unit is assemblied in and increases material and manufacture opening of aluminium alloy pipeline part
Mouth end.As Fig. 2 show for one group of unit.Often group unit includes cavity 5, piston cylinder 4, piston 3, piston rod 2 and driver element
1.One end of cavity 5 is clamped workpiece 7a by fixture 6 and is connected with workpiece hole, and the other end is connected with described piston cylinder 4；Institute
State piston 3 to be connected in described piston cylinder 4, and be connected with described driver element 1 by described piston rod 2, described driving
Unit 1 can drive described piston 3 to move back and forth in described piston cylinder 4.
According to fluid flow direction in increasing material manufacture aluminium alloy pipeline part, said units will be organized by fixture 6 more
Being installed on each mouth of pipe 7a of part, opening device, abrasive material flows through the pipeline of aluminium alloy pipeline part, throws accessory inner surface
Light.
The granularity of the abrasive material used is generally 100-320 mesh.When the granularity of abrasive material is less than 100 mesh, then in the unit interval
In, inconspicuous to the polishing effect of the interior conduit of aluminium alloy pipeline part, it is unfavorable for the control of production cost；Granularity when abrasive material
During more than 320 mesh, the interior conduit of aluminium alloy pipeline part will be caused scratch.
In general, abrasive material is carborundum, aluminium oxide, boron carbide or diamond particles.
The operating pressure of suitable raising abrasive Flow equipment, can effectively shorten the working time of abrasive Flow equipment, improves raw
Produce efficiency, typically the operating pressure of abrasive Flow equipment is set to 5-20MPa.Operating pressure is excessive, and abrasive material flows through aluminium alloy pipeline
The frictional force of the interior conduit of part is excessive, easily tube wall is caused scratch；Operating pressure is too small, prolongs the working time of abrasive material
Long, it is unfavorable for the raising of production efficiency.When the operating pressure of abrasive Flow equipment is set to 5-20MPa, abrasive material uniformly circulates 5-
10min, can meet the requirement of abrasive Flow rough polishing, does not merges caducous or the half metal powder granulates removal merged,
And make to be down to below 6.3 μm by the inside surface roughness grinding pipe fitting.
After mechanical type abrasive Flow rough polishing, carry out chemical reagent finishing polish step, in chemical reagent fine polishing step
Consisting of of the chemical polishing reagent used: phosphoric acid, Fluohydric acid., nitric acid and glacial acetic acid.Preferably, described chemical polishing reagent bag
Containing 40-50% phosphoric acid, 15-20% Fluohydric acid., 15-20% nitric acid, 5-10% glacial acetic acid.Chemical reagent is Circulated polishing in pipe
Time is 5-15min.
As a example by the inner surface increasing material manufacture aluminium alloy pipeline part to is polished, the inner surface of pipe fitting to the present invention
Finishing method illustrates.
The first step, removes surface powder easy to fall off by abrasive Flow, and the inside surface roughness by grinding pipe fitting is down to
Below 6.3 μm, complete rough polishing:
First according to structural design of fittings abrasive Flow frock clamp, fixture manufacture is completed；Subsequently workpiece and fixture are fixed
In abrasive Flow equipment, use 100-320 mesh carborundum, aluminium oxide, boron carbide or diamond abrasive, under 5-20MPa pressure,
Making abrasive material uniformly circulate 5-10min, take out workpiece subsequently, cleaning is removed pipeline residual abrasive material, is completed rough polishing.
Second step, is reduced increasing material further and manufactures aluminium alloy pipeline accessory inner surface roughness Ra extremely by chemical polishing
Below 3.2 μm:
First in following ratio 40-50% phosphoric acid, 15-20% Fluohydric acid., 15-20% nitric acid, the configuration of 5-10% glacial acetic acid
Chemical polishing reagent, is connected to solution inlet pipeline and outlet conduit Circulated polishing 5-15min subsequently by polished pipeline,
Take out workpiece clear water eventually and rinse 3-5min, dry.
The present invention makes abrasive material circulate in workpiece lumen by extruding, makes abrasive grain constantly contact with surface of the work and grinds
Mill, completes powder easy to fall off and removes and rough polishing；Chemical reagent is made to circulate at inner flow passage, to sample table by chemical polishing subsequently
The selective dissolution effect in uneven region, face eliminates polishing scratch, etch leveling, completes finishing polish and reduces inner surface further
Roughness.Present invention achieves the polishing to baroque inner surface of pipe fitting, particularly reduce increasing material and manufacture aluminium-alloy pipe
The roughness of the inner surface of road part so that increase material manufacture aluminium alloy pipeline class part and may apply to broader technology neck
Territory, has promoted the progress of science and technology.
What present disclosure was touched upon is exemplary embodiment, at the protection domain defined without departing from claims
In the case of, each embodiment of the application can be made various changes and modifications.Therefore, described embodiment is intended to contain
All this type of that lid falls in the protection domain of appended claims changes, revises and deform.It addition, unless stated otherwise,
All or part of of the most any embodiment can be in conjunction with all or part of use of any other embodiments.
Claims (10)
1. the finishing method increasing material manufacture aluminium alloy pipeline accessory inner surface, it is characterised in that described finishing method includes
Abrasive Flow rough polishing step and chemical reagent finishing polish step, wherein:
Abrasive Flow rough polishing step includes:
By polished aluminium alloy pipeline part placing clamp, it is then affixed in abrasive Flow equipment；
Open abrasive Flow equipment so that abrasive material flows through the pipeline of aluminium alloy pipeline part；
Take out workpiece, the abrasive material remained in removing the pipeline of aluminium alloy pipeline part；
Chemical reagent finishing polish step includes:
Polished pipeline is connected to chemical polishing reagent inlet pipeline and outlet conduit Circulated polishing；
Clear water rinses, and dries.
2. finishing method as claimed in claim 1, it is characterised in that described abrasive Flow equipment is fluid pressurized acceleration mechanism.
3. finishing method as claimed in claim 2, it is characterised in that the operating pressure of described abrasive Flow equipment is 5-20MPa,
Abrasive material uniformly circulates 5-10min.
4. finishing method as claimed in claim 1, it is characterised in that the granularity of described abrasive material is 100-320 mesh.
5. finishing method as claimed in claim 1, it is characterised in that described abrasive material is carborundum, aluminium oxide, boron carbide or gold
Hard rock granule.
6. finishing method as claimed in claim 1, it is characterised in that polished pipeline is connected to chemical polishing examination described
Before agent inlet duct and outlet conduit Circulated polishing, also include the step configuring chemical polishing reagent.
7. finishing method as claimed in claim 6, it is characterised in that consisting of of described chemical polishing reagent: phosphoric acid, hydrogen fluorine
Acid, nitric acid and glacial acetic acid.
8. finishing method as claimed in claim 6, it is characterised in that described chemical polishing reagent comprises 40-50% phosphoric acid,
15-20% Fluohydric acid., 15-20% nitric acid, 5-10% glacial acetic acid.
9. finishing method as claimed in claim 8, it is characterised in that the time of described Circulated polishing is 5-15min.
10. finishing method as claimed in claim 1, it is characterised in that preferably, the time that described clear water rinses is 3-
5min。
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610857028.6A CN106271902A (en) | 2016-09-27 | 2016-09-27 | A kind of material that increases manufactures aluminium alloy pipeline accessory inner surface finishing method |
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|---|---|---|---|
| CN201610857028.6A CN106271902A (en) | 2016-09-27 | 2016-09-27 | A kind of material that increases manufactures aluminium alloy pipeline accessory inner surface finishing method |
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109079143A (en) * | 2017-06-13 | 2018-12-25 | 中国航发商用航空发动机有限责任公司 | The method for removing precinct laser fusion formation of parts surface of internal cavity crackle |
| CN110216527A (en) * | 2019-06-14 | 2019-09-10 | 哈工大机器人（合肥）国际创新研究院 | For inner cavity, there are the polishing methods of the metal parts of bend flow channel |
| CN110370158A (en) * | 2019-08-20 | 2019-10-25 | 西北工业大学 | Abrasive Flow tooling applied to aero-engine preswirl nozzle surface of internal cavity finishing |
| CN110976883A (en) * | 2019-12-10 | 2020-04-10 | 昆明理工大学 | Method for reducing surface roughness of complex structure of selective melting 3D printing metal |
| CN111890210A (en) * | 2020-07-20 | 2020-11-06 | 青岛中科睿航航空科技有限公司 | Polishing equipment and polishing method for material increase manufacturing part inner flow channel |
| CN112621572A (en) * | 2020-12-16 | 2021-04-09 | 安徽恒利增材制造科技有限公司 | Additive manufacturing method for high-strength aluminum alloy complex component |
| CN115213798A (en) * | 2022-09-19 | 2022-10-21 | 南通飞奔机械有限公司 | Processing equipment with internal thread polishing function for pipeline communicating piece |
| CN115401591A (en) * | 2022-11-01 | 2022-11-29 | 天津集智航宇科技有限公司 | Method for polishing fluid in inner hole of laser gyroscope |
| CN115464544A (en) * | 2022-10-06 | 2022-12-13 | 航发优材(镇江)增材制造有限公司 | Abrasive flow process method for calibrating various structures and various base materials |
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Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109079143A (en) * | 2017-06-13 | 2018-12-25 | 中国航发商用航空发动机有限责任公司 | The method for removing precinct laser fusion formation of parts surface of internal cavity crackle |
| CN109079143B (en) * | 2017-06-13 | 2020-12-29 | 中国航发商用航空发动机有限责任公司 | Method for removing cracks on inner cavity surface of selective laser melting formed part |
| CN110216527A (en) * | 2019-06-14 | 2019-09-10 | 哈工大机器人（合肥）国际创新研究院 | For inner cavity, there are the polishing methods of the metal parts of bend flow channel |
| CN110370158A (en) * | 2019-08-20 | 2019-10-25 | 西北工业大学 | Abrasive Flow tooling applied to aero-engine preswirl nozzle surface of internal cavity finishing |
| CN110370158B (en) * | 2019-08-20 | 2020-12-08 | 西北工业大学 | Abrasive flow tool applied to surface finishing of inner cavity of prewhirl nozzle of aircraft engine |
| CN110976883A (en) * | 2019-12-10 | 2020-04-10 | 昆明理工大学 | Method for reducing surface roughness of complex structure of selective melting 3D printing metal |
| CN111890210A (en) * | 2020-07-20 | 2020-11-06 | 青岛中科睿航航空科技有限公司 | Polishing equipment and polishing method for material increase manufacturing part inner flow channel |
| CN112621572A (en) * | 2020-12-16 | 2021-04-09 | 安徽恒利增材制造科技有限公司 | Additive manufacturing method for high-strength aluminum alloy complex component |
| CN115213798A (en) * | 2022-09-19 | 2022-10-21 | 南通飞奔机械有限公司 | Processing equipment with internal thread polishing function for pipeline communicating piece |
| CN115464544A (en) * | 2022-10-06 | 2022-12-13 | 航发优材(镇江)增材制造有限公司 | Abrasive flow process method for calibrating various structures and various base materials |
| CN115464544B (en) * | 2022-10-06 | 2024-05-03 | 航发优材(镇江)增材制造有限公司 | Abrasive particle flow process method for calibrating various structures and various base materials |
| CN115401591A (en) * | 2022-11-01 | 2022-11-29 | 天津集智航宇科技有限公司 | Method for polishing fluid in inner hole of laser gyroscope |
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