CN109778298A - A kind of electrolytic polishing liquid, burnishing device and polishing method - Google Patents
A kind of electrolytic polishing liquid, burnishing device and polishing method Download PDFInfo
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- CN109778298A CN109778298A CN201910208927.7A CN201910208927A CN109778298A CN 109778298 A CN109778298 A CN 109778298A CN 201910208927 A CN201910208927 A CN 201910208927A CN 109778298 A CN109778298 A CN 109778298A
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- polishing liquid
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Abstract
The invention discloses a kind of electrolytic polishing liquid, burnishing device and polishing methods, electrolytic polishing liquid described in the electrolytic polishing liquid calculates by weight, 5~15wt%, 1~5wt% of surfactant are accounted for including 18~28wt% of sulfuric acid, 20~32wt% of citric acid, tartaric acid, surplus is deionized water；The concentration of the sulfuric acid is 98%；The surfactant is anionic surfactant.The present invention is solved the small internal surface of hole of martensitic stain less steel and is difficult to the technical problem polished using the oxide skin in electrobrightening removal heat-treatment part aperture, the method for threaded hole inner burr.
Description
Technical field
The present invention relates to electrolytic polishing process, more particularly, to a kind of electrolytic polishing liquid, burnishing device and polishing method.
Background technique
It is well known that martensitic stain less steel is after Overheating Treatment, surface hardness, intensity, wearability significantly increased, price
Also relatively cheap, thus often by one of the main raw material(s) as medical instrument.On the other hand, in order to meet the side of clinician
Just it uses, medical instrument is always designed to have the components of pore structure, some are blind holes, some are elongated holes, some are
Threaded hole etc..And the basic demand as medical instrument, components inner surface must be it is smooth, must not be jagged, cutting edge of a knife or a sword rib,
It is heat-treated the impurity such as the oxide skin generated.Therefore the small internal surface of hole of this medical instrument, which has to pass through polishing treatment, can be only achieved
Quality requirement.For small internal surface of hole, pore structure is easily destroyed using mechanical polishing mode, product qualification rate is low；And chemistry is thrown
For light to flash removed is removed, the oxidation bark effect for being heat-treated generation is barely satisfactory, therefore electrobrightening is just at the interior table of this product
The prefered method of face polishing.
However, presently disclosed stainless steel electrolytic polishing technology is rarely reported this primarily directed to outer surface of workpiece
The electrobrightening technology of small internal surface of hole.The electrobrightening technical difficulty that this is also due to small internal surface of hole is quite big.In currently,
To disclose stainless steel small for " electropolishing method for austenitic stainless steel orifice " that state's patent number is CN201010228099.2
Hole electrolytic polishing method.But there is following both sides deficiencies: 1. electrolyte used contain the phosphoric acid of conventional formulation,
Not environmentally, the waste water of generation is difficult, and direct emission easily causes water eutrophication, influences water body environment.2. having deep-etching
Property hot sulfuric acid solution carry out circulate operation and the corrosion resistance of equipment required very high, and operator may be constituted
Security threat.
Summary of the invention
The purpose of the present invention is a kind of electrolytic polishing liquid, burnishing device and the polishings of proposition in view of the deficiencies of the prior art
Method.
Realizing the technical solution of the object of the invention is: a kind of electrolytic polishing liquid, electrolytic polishing liquid calculate by weight, including
18~28wt% of sulfuric acid, 20~32wt% of citric acid, tartaric acid account for 5~15wt%, 1~5wt% of surfactant, and surplus is to go
Ionized water；The concentration of the sulfuric acid is 98%；The surfactant is anionic surfactant.
The citric acid, tartaric acid and surfactant are that analysis is pure.
The surfactant is odium stearate, neopelex, one of lauryl sodium sulfate or more
Kind.
A kind of burnishing device, including reaction vessel, supersonic generator, electrolyte storage bin and power supply；The electrolyte
Above-mentioned electrolytic polishing liquid is filled in storage bin；Conductive plate is equipped in the reaction vessel；The oral area of the reaction vessel is set up
There is conducting rod；The left side of the reaction vessel front end face is equipped with the first inlet opening, and the rear side of left side is equipped with the second inlet opening, after
The right side of end face is equipped with third inlet opening, and the front side of right side is equipped with the 4th inlet opening；The bottom of the reaction vessel is equipped with
Fluid apertures；First inlet opening, the second inlet opening, third inlet opening, the 4th inlet opening and fluid hole pass through pipeline and electrolysis
The connection of liquid storage bin, and metering pump is equipped on every pipeline；The supersonic generator provides ultrasonic wave for cell reaction；
The positive and negative electrode of the power supply is separately connected conducting rod and conductive plate.
The reaction vessel is made of tempered glass.
The interior bottom of the reaction vessel and the interior bottom of electrolyte storage bin be equipped with can set temperature electric heating tube；
The inner wall of the reaction vessel is equipped with the temperature sensor for protruding into electrolytic polishing liquid；The temperature sensor is for monitoring electrolysis
The temperature of polishing fluid.
It is evenly equipped with mounting groove along the longitudinal direction on the top surface of the left and right sides wall of the reaction vessel；The two of the conducting rod
End is connected in mounting groove.
Circumferentially arranged with the mounting slot of annular on the conducting rod outer peripheral surface, and it is uniformly distributed along the axial direction of conducting rod to mount slot
Setting.
The oral area of the reaction vessel is equipped with up-small and down-big funnel-form and covers；The top of the capping is equipped with gas vent.
A kind of polishing method is processed by shot blasting polished workpiece using above-mentioned electrolytic polishing liquid；Its polishing side
Method the following steps are included:
S1: above-mentioned electrolytic polishing liquid is prepared；
S2: polished workpiece and above-mentioned conductive plate are connect into power supply positive and negative electrode respectively, are placed into electrolytic polishing liquid；
S3: opening supersonic generator and connects the power supply of polished workpiece and conductive plate, makes polished workpiece super
It is polished under the action of sound wave；
S4: electrolysis.
The temperature for adjusting electrolytic polishing liquid is 50 DEG C~60 DEG C；Adjusting decomposition voltage is 5V~8V；Current density is 30A/
dm2~50A/dm2；Holding electrolysis time is 30S~150S.
The power for adjusting ultrasonic wave is 0.6KW~1.2KW, and frequency is not less than 25KHZ.
Using above-mentioned technical proposal, the present invention has the following beneficial effects: (1) present invention is removed using electrobrightening
Oxide skin in heat-treatment part aperture, the method for threaded hole inner burr solve the small internal surface of hole of martensitic stain less steel and are difficult to
The technical problem of polishing.
(2) present invention employs the electrolytic polishing process in the case where ultrasonic wave acts on, so that polishing effect is better.
(3) the without phosphorus Chrome-free of electrolytic polishing liquid that the present invention uses, not can cause environmental pollution.
(4) present invention adds surfactants, so that small internal surface of hole is more smooth after the completion of electrolysis.
(5) sulfuric acid of the invention uses concentration for 98% sulfuric acid, greatly improves so that reacting electrolytic speed.
(6) present invention is provided with electrolyte storage bin, and is equipped with the first inlet opening in the left side of reaction vessel front end face,
The rear side of left side is equipped with the second inlet opening, and the right side of rear end face is equipped with third inlet opening, the front side of right side be equipped with the 4th into
Fluid apertures；The bottom of the reaction vessel is equipped with fluid hole；First inlet opening, the second inlet opening, third inlet opening, the 4th inlet opening
Pass through pipeline with fluid hole to be connected to electrolyte storage bin, electrolytic polishing liquid formation is enabled to circulate in reaction vessel in this way
It is circulated between electrolyte storage bin, the bubble of cathode generation can be removed, so that polishing effect is more preferable.
(7) reaction vessel of the invention uses tempered glass, will not only be corroded by the concentrated sulfuric acid, nor can obstruct super
The transmission of sound wave.
(8) heating tube that the present invention can be set using temperature, can adjust heating temperature at any time, it is ensured that electrolysis is good
At a temperature of carry out.
(9) present invention is provided with capping, avoids pernicious gas from being sucked by people, high safety.
Detailed description of the invention
In order that the present invention can be more clearly and readily understood, right below according to specific embodiment and in conjunction with attached drawing
The present invention is described in further detail, wherein
Fig. 1 is the structural diagram of the present invention.
Fig. 2 is the structural schematic diagram of reaction vessel of the present invention.
Label in attached drawing are as follows:
Reaction vessel 1, the second inlet opening 1-2, third inlet opening 1-3, the 4th inlet opening 1-4, goes out first inlet opening 1-1
Fluid apertures 1-5, mounting groove 1-6, electrolyte storage bin 2, conductive plate 3, conducting rod 4, mounting slot 4-1, electric heating tube 5, metering pump 6.
Specific embodiment
In order that the present invention can be more clearly and readily understood, right below according to specific embodiment and in conjunction with attached drawing
The present invention is described in further detail.The description in orientation of the invention is according to shown in orientation shown in FIG. 1 progress namely Fig. 1
Left and right directions be the left and right directions described, the up and down direction of Fig. 1 is the front-rear direction described, and a side of Fig. 1 direction is
The top of description.
(embodiment 1)
The electrolytic polishing liquid of the present embodiment, electrolytic polishing liquid calculate by weight, including 18~28wt% of sulfuric acid, citric acid
20~32wt%, tartaric acid account for 5~15wt%, 1~5wt% of surfactant, and surplus is deionized water.The concentration of sulfuric acid is
98%.Surfactant is anionic surfactant.Citric acid, tartaric acid and surfactant concentration are that analysis is pure.Table
Face activating agent is odium stearate, neopelex, one of lauryl sodium sulfate or a variety of.
See Fig. 1 and Fig. 2, a burnishing device of the present embodiment, including the storage of reaction vessel 1, supersonic generator, electrolyte
Case 2 and power supply.
Above-mentioned electrolytic polishing liquid is filled in electrolyte storage bin 2.Conductive plate 3 is equipped in reaction vessel 1.Reaction vessel
Mounting groove 1-6 is evenly equipped on the top surface of left and right sides wall along the longitudinal direction.The both ends of conducting rod 4 are connected in mounting groove 1-6.
The left side of 1 front end face of reaction vessel is equipped with the first inlet opening 1-1, and the rear side of left side is equipped with the second inlet opening 1-2, rear end face
Right side is equipped with third inlet opening 1-3, and the front side of right side is equipped with the 4th inlet opening 1-4.The bottom of reaction vessel 1 is equipped with fluid hole
1-5.First inlet opening 1-1, the second inlet opening 1-2, third inlet opening 1-3, the 4th inlet opening 1-4 and fluid hole 1-5 pass through
Pipeline is connected to electrolyte storage bin 2, and metering pump 6 is equipped on every pipeline.Supersonic generator mentions for cell reaction
For ultrasonic wave.The positive and negative electrode of power supply is separately connected conducting rod 4 and conductive plate 3.The flow for adjusting metering pump 6, so that liquid inlet volume etc.
In liquid outlet quantity.
Reaction vessel 1 is preferably made of the tempered glass of 5 millimeters thicks, can either prevent from corroding, and enable to ultrasound
Wave has good penetrability.
In order to guarantee the temperature of electrolysis, being equipped in the interior bottom of reaction vessel 1 and the interior bottom of electrolyte storage bin 2 can
The electric heating tube 5 of set temperature.The inner wall of reaction vessel 1 is equipped with the temperature sensor for protruding into electrolytic polishing liquid, temperature sensing
Device is used to monitor the temperature of electrolytic polishing liquid, and electric heating tube is controlled by control cabinet, and temperature sensor and control cabinet are electrically connected, control
Cabinet processed uses the conventional design of this field, and when temperature is lower than set temperature, control cabinet controls electric heating tube 5 and heats, when
When temperature is higher than set temperature, control cabinet controls electric heating tube 5 and stops heating, guarantees the temperature of electrolytic polishing liquid.
For convenience polished workpiece installation, on 4 outer peripheral surface of conducting rod circumferentially arranged with annular mounting slot 4-1,
And the axial direction for mounting slot 4-1 along conducting rod 4 is uniformly arranged.
The exhaust gas for being electrolysed generation in order to prevent endangers health, is provided in the oral area of reaction vessel 1 up-small and down-big
Funnel-form capping.The top of capping is equipped with gas vent.Gas vent connects external exhaust gas processing equipment.
A kind of polishing method of the present embodiment, the workpiece of processing are the drill bushing embryo with elongated hole by quenching treatment
Material, material trademark 420B are processed by shot blasting polished workpiece using above-mentioned electrolytic polishing liquid.Its polishing method packet
Include following steps:
S1: above-mentioned electrolytic polishing liquid is prepared.Electrolyte composition: sulfuric acid 18wt%, citric acid wt%, tartaric acid
15wt%, odium stearate wt%, water 30wt%.The temperature for adjusting electrolytic polishing liquid is 60 DEG C.
S2: polished workpiece and above-mentioned conductive plate 2 are connect into power supply positive and negative electrode respectively, are placed into electrolytic polishing liquid.It adjusts
Section decomposition voltage is 5V.Current density is 40A/dm2.
S3: opening supersonic generator and connects the power supply of polished workpiece and conductive plate 2, makes polished workpiece super
It is polished under the action of sound wave.The power for adjusting ultrasonic wave is 0.6KW, frequency 25KHZ.
S4: holding electrolysis time is 50S.
Electrolysis effectiveness: the removal of aperture internal oxidition skin is clean, and internal surface of hole roughness significantly reduces.
(embodiment 2)
The workpiece of the present embodiment processing is the complicated core drill by quenching treatment of inner surface structure, and material trademark is
420.The electrolyte of the present embodiment forms: sulfuric acid 28wt%, citric acid 30wt%, tartaric acid 8wt%, neopelex
3wt%, lauryl sodium sulfate 1wt%, water 30wt%.55 DEG C of electrolyte temperature, 7 volts of voltage, current density 50A/dm2, electricity
Solve time 30S.Ultrasonic power is 1.2KW, frequency 25KHZ.
Electrolysis effectiveness: aperture, the removal of cutting edge inner surface oxide skin is clean, and inside surface roughness significantly reduces.
(embodiment 3)
The workpiece of the present embodiment processing is by the leading truck with threaded hole of quenching treatment, material trademark 17-4.
Electrolyte composition: sulfuric acid 25wt%, citric acid 30wt%, tartaric acid 10wt%, odium stearate 3wt%, lauryl sodium sulfate
2wt%, water 30wt%.50 DEG C of electrolyte temperature, 8 volts of voltage, current density 30A/dm2, electrolysis time 100S.Ultrasonic power
For 1.2KW, frequency 28KHZ.
Electrolysis effectiveness: threaded hole inner burr, oxide skin removal are clean.
(embodiment 4)
The workpiece of the present embodiment processing is by the torque spanner bar with blind hole of quenching treatment, and material trademark is
440B.Electrolyte composition: sulfuric acid 20wt%, citric acid 30wt%, tartaric acid 5wt%, odium stearate 2wt%, detergent alkylate
Sodium sulfonate 2wt%, lauryl sodium sulfate 1wt%, water 40wt%.50 DEG C of electrolyte temperature, 8 volts of voltage, current density 40A/
Dm2, electrolysis time 150S, ultrasonic power 0.6KW, frequency 28KHZ.
Electrolysis effectiveness: the removal of blind hole internal oxidition skin is clean, and inside surface roughness significantly reduces.
(embodiment 5)
The workpiece of the present embodiment processing is by the torque spanner bar with blind hole of quenching treatment, and material trademark is
440B.Electrolyte composition: sulfuric acid 25wt%, citric acid 20wt%, tartaric acid 7wt%, neopelex 2 wt%, ten
Sodium dialkyl sulfate 1wt%, water 45wt%.50 DEG C of electrolyte temperature, 6 volts of voltage, current density 40A/dm2, electrolysis time
150S, ultrasonic power 1KW, frequency 30KHZ.
Electrolysis effectiveness: the removal of blind hole internal oxidition skin is clean, and inside surface roughness significantly reduces.
Under the action of ultrasonic wave, electrobrightening effect is obvious, small before electrolysis for stainless steel parts with holes in above-described embodiment
Internal surface of hole is coarse, and there are thick heat-treatment oxidation skins.After electrolysis, aperture inside surface roughness is substantially reduced, surface light
Bright and non-scale.Ultrasonic wave concussion effect under, small internal surface of hole can come into full contact with electrolyte, but also can and
When discharge reaction be precipitated gas and other products, keep inner surface cell reaction more abundant, anode surface dissolve more fully and completely.
Above specific embodiment has carried out further specifically the purpose of the present invention, technical scheme and beneficial effects
It is bright, it should be understood that be not intended to restrict the invention the above is only specific embodiments of the present invention, it is all in the present invention
Spirit and principle within, any modification, equivalent substitution, improvement and etc. done, should be included in protection scope of the present invention it
It is interior.
Claims (10)
1. a kind of electrolytic polishing liquid, it is characterised in that: the electrolytic polishing liquid calculates by weight, comprising: sulfuric acid 18~
28wt%, 20~32wt% of citric acid, tartaric acid account for 5~15wt%, 1~5wt% of surfactant, and surplus is deionized water；
The concentration of the sulfuric acid is 98%；The surfactant is anionic surfactant.
2. a kind of electrolytic polishing liquid according to claim 1, it is characterised in that: the citric acid, tartaric acid and surface are living
Property agent concentration be analysis it is pure.
3. a kind of electrolytic polishing liquid according to claim 1, it is characterised in that: the surfactant be odium stearate,
One of neopelex, lauryl sodium sulfate are a variety of.
4. a kind of burnishing device, it is characterised in that: including reaction vessel (1), supersonic generator, electrolyte storage bin (2) and
Power supply；Electrolytic polishing liquid described in claims 1 or 2 or 3 is filled in the electrolyte storage bin (2)；The reaction vessel (1)
It is interior to be equipped with conductive plate (3)；The oral area of the reaction vessel (1) is provided with conducting rod (4)；Reaction vessel (1) front end face
Left side is equipped with the first inlet opening (1-1), and the rear side of left side is equipped with the second inlet opening (1-2), and the right side of rear end face is equipped with third
The front side of inlet opening (1-3), right side is equipped with the 4th inlet opening (1-4)；The bottom of the reaction vessel (1) is equipped with fluid hole
(1-5)；First inlet opening (1-1), the second inlet opening (1-2), third inlet opening (1-3), the 4th inlet opening (1-4) and go out
Fluid apertures (1-5) is connected to by pipeline with electrolyte storage bin (2), and metering pump (6) are equipped on every pipeline；It is described super
Sonic generator provides ultrasonic wave for cell reaction；The positive and negative electrode of the power supply is separately connected conducting rod (4) and conductive plate (3).
5. a kind of burnishing device according to claim 4, it is characterised in that: the interior bottom of the reaction vessel (1) and electricity
Solution liquid storage bin (2) interior bottom be equipped with can set temperature electric heating tube (5)；It is set on the inner wall of the reaction vessel (1)
There is the temperature sensor for protruding into electrolytic polishing liquid；The temperature sensor is used to monitor the temperature of electrolytic polishing liquid.
6. a kind of burnishing device according to claim 4, it is characterised in that: on conducting rod (4) outer peripheral surface circumferentially
Mounting slot (4-1) equipped with annular, and mount slot (4-1) and be uniformly arranged along the axial direction of conducting rod (4).
7. a kind of burnishing device according to claim 4, it is characterised in that: the oral area of the reaction vessel (1) is equipped with upper
Small lower big funnel-form capping；The top of the capping is equipped with gas vent.
8. a kind of polishing method, it is characterised in that: carried out using electrolytic polishing liquid described in claim 1 to polished workpiece
Polishing treatment；Its polishing method the following steps are included:
S1: electrolytic polishing liquid described in claim 1 is prepared；
S2: polished workpiece and conductive plate as claimed in claim 2 (2) are connect into power supply positive and negative electrode respectively, are placed into electrobrightening
In liquid；
S3: opening supersonic generator and connects the power supply of polished workpiece and conductive plate (2), makes polished workpiece in ultrasound
It is polished under the action of wave；
S4: electrolysis.
9. a kind of polishing method according to claim 8, it is characterised in that: adjust electrolytic polishing liquid temperature be 50 DEG C~
60℃；Adjusting decomposition voltage is 5V~8V；Current density is 30A/dm2~50A/dm2；Holding electrolysis time is 30S~150S.
10. a kind of polishing method according to claim 8, it is characterised in that: adjust ultrasonic wave power be 0.6KW~
1.2KW, frequency are not less than 25KHZ.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201910208927.7A CN109778298A (en) | 2019-03-19 | 2019-03-19 | A kind of electrolytic polishing liquid, burnishing device and polishing method |
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| CN201910208927.7A CN109778298A (en) | 2019-03-19 | 2019-03-19 | A kind of electrolytic polishing liquid, burnishing device and polishing method |
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| CN110514503A (en) * | 2019-10-14 | 2019-11-29 | 上海宝冶工程技术有限公司 | A kind of preparation method of pure copper samples |
| CN110670116A (en) * | 2019-11-18 | 2020-01-10 | 中国航发贵州黎阳航空动力有限公司 | Weak-acid electrolytic marking liquid for metal components of aero-engine |
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Address after: 213000 No. 9, Xihu Road, Wujin high tech Industrial Development Zone, Changzhou City, Jiangsu Province Applicant after: Changzhou Huasen Medical Instrument Co.,Ltd. Address before: 213000 No. 9, Xihu Road, Wujin high tech Industrial Development Zone, Changzhou City, Jiangsu Province Applicant before: CHANGZHOU WASTON MEDICAL APPLIANCE Co.,Ltd. |
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| CB02 | Change of applicant information |