CN109735835A - A kind of metal casting surface passivation method - Google Patents
A kind of metal casting surface passivation method Download PDFInfo
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- CN109735835A CN109735835A CN201910115642.9A CN201910115642A CN109735835A CN 109735835 A CN109735835 A CN 109735835A CN 201910115642 A CN201910115642 A CN 201910115642A CN 109735835 A CN109735835 A CN 109735835A
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- passivator
- reaction tank
- metal casting
- solenoid valve
- concentration
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Abstract
The invention discloses a kind of metal casting surface passivation method, the present invention recycles component using metal casting blunting component and passivator；Metal casting blunting component includes the reaction tank for passivation reaction, the outlet of reaction tank is connect with the buffer pool of passivator recycling component, buffer pool is connect after filtering out the impurity that low concentration passivator includes with recovery pond, the recovery pond is connected with the second storage vat for being stored with high concentration passivator, for neutralizing low concentration passivator for the higher available passivator of concentration, it can be stored in passivator in the first storage vat, for reaction tank use.For the present invention by setting buffer pool and recovery pond, the passivator of the low concentration to handle reaction tank discharge makes it restore to the available concentration of passivation reaction, reduces costs and avoids directly excluding and polluting environment.
Description
Technical field
The present invention relates to metal casting process units fields, specifically, it is blunt to be related specifically to a kind of metal casting surface
Change method.
Background technique
Passivation is so that metal surface is converted into the state for being not easy to be oxidized, and delay the method for corrosion of metal speed.It is existing
Some passivating methods are put into the reaction tank for being contained with passivator using by metal casting, the defect of this passivating method
It is:
1, the effective component in passivator can be consumed due to passivation reaction, lead to the gold of front and back different batches investment reaction tank
The thickness for belonging to cast(ing) surface passivation generation can not be identical, and then influences product quality.
2, since passivation reaction in reaction tank using excessive passivator is put into, these passivator are in passivation reaction
After can generate a large amount of low concentration passivator residual, if being handled it or being recycled, higher cost；If directly arranging
It puts, then would seriously pollute the environment.
3, since the oxidisability of passivator and corrosivity are higher, for detecting the liquid-level switch and passivator of passivator liquid level
It is easily damaged after contacting for a long time, causes maintenance cost very high.
Summary of the invention
It is an object of the invention to aiming at the shortcomings in the prior art, provide a kind of metal casting surface passivation method, with
Solve problems of the prior art.
Technical problem solved by the invention can be realized using following technical scheme:
A kind of metal casting surface passivation method, includes the following steps:
1) electromagnet grabs metal casting at initial station, and driving motor is by driving the guiding of slide plate transversely guide rail
Slot is mobile, and cylinder, electromagnet and metal casting are moved to the top of reaction tank；
2) cylinder starts, and electromagnet and metal casting are moved down, until the contact of the substrate of metal casting and station slot,
Pressure sensor below substrate detects signal, and sends a control signal to the control input of cylinder and driving motor
End, electromagnet put down metal casting；
3) pressure sensor sends a signal to the first solenoid valve of the first storage vat simultaneously, and the first solenoid valve is opened, and first
Passivator in storage vat enters reaction tank, and passivation reaction starts；
4) passivator is entered in the second cavity for connecting with reaction tank by inflow hole, with the raising of passivator liquid level,
Float plate moves up, until contact with the liquid-level switch at the top of the second cavity, liquid-level switch sends control signal to the first solenoid valve,
First solenoid valve is closed, and passivator stops entering reaction tank；
5) with the progress of passivation reaction, the concentration of passivator is begun to decline in reaction tank, until passing lower than the first concentration
The preset value of sensor, at this point, the first concentration sensor sends control signal to second solenoid valve, second solenoid valve is opened, passivation
The recovered pipeline of agent reaches buffer pool, and the outflow port after the filtering of buffer pool, then through buffer pool reaches recovery pond；
6) the second concentration sensor in recovery pond detects the passivator of low concentration, controls the third electricity of the second storage vat
Magnet valve is opened, and the passivator of the high concentration in the second storage vat enters recovery pond, is mixed with the passivator of low concentration, same with this
When, stirring motor is opened, and the mixing of the two is accelerated；
7) the second concentration sensor in recovery pond detects that the passivating agent concentration in recovery pond is restored to can be with metal casting
After part is passivated the concentration of reaction, the 4th solenoid valve of control is opened, and the passivator in recovery pond enters to be reached through reflux line
First storage vat, to be used to subsequent passivation reaction.
The method recycles component using metal casting blunting component and passivator.
The metal casting blunting component includes reaction tank, and station slot, the work are fixedly installed in the reaction tank
Position slot includes the substrate for placing metal casting, the postive stop baffle upwardly extended is equipped in the two sides of substrate, in the substrate
Bottom be equipped with for detecting the pressure sensor whether metal casting is in place and first for detecting passivating agent concentration
Concentration sensor, the signal output end of pressure sensor are connect with the signal input part of the first solenoid valve of the first storage vat；
First storage vat includes the first cavity for storing passivator, is equipped in the bottom of first cavity
Liquid mouth, and liquid outlet is connect by liquid outlet pipe with reaction tank, is installed in the junction of the liquid outlet pipe and reaction tank useful
In the first solenoid valve that control liquid outlet pipe opens/closes；
It is equipped with handling device in the top of the reaction tank, the handling device includes the branch being set to above reaction tank
Frame is welded with cross slide way on the bracket, and guide groove, activity between the guide groove are offered on the inside of cross slide way
It is connected with slide plate, the slide plate is connect by connecting rod with the driving motor being installed on bracket, and the slide plate can be in driving electricity
It is moved left and right under the promotion of machine along guide groove；Cylinder is installed on the slide plate, the cylinder passes through push rod and is used to grab
The electromagnet of metal casting connects, and the signal output end of the signal input part and pressure sensor of the driving motor and cylinder connects
It connects.
The second cavity is equipped in the side wall of the reaction tank, the second cavity is connected to by inflow hole with reaction tank, in institute
It states and is fixedly installed with limit sieve plate in the second cavity, the limit sieve plate is located at the top of inflow hole, above limit sieve plate
The float plate that can be moved up and down along the inner wall of second cavity is installed in the second cavity, is installed at the top of the float plate
There is liquid-level switch, the signal output end of the liquid-level switch is connect with the signal input part of the first battery valve.
The passivator recycling component includes buffer pool, and the buffer pool is connect by recovery channel with reaction tank, in institute
The junction for stating recovery channel and reaction tank is equipped with the second solenoid valve opened/closed for controlling recovery channel, the second electromagnetism
The signal input part of valve and the signal output end of concentration sensor connect, and filter screen are equipped in the buffer pool, in buffer pool
Bottom offer outflow port, the outflow port is connect with recovery pond；
Agitating device is installed in the recovery pond, the agitating device includes the stirring electricity being installed on outside recovery pond
Machine, the output end of the stirring motor and the stirring axis connection being installed on inside recovery pond, if being equipped on the agitating shaft
Dry stirring fin, be also equipped in the recovery pond the second concentration sensor for detecting passivating agent concentration in recovery pond and
Third concentration sensor, second concentration sensor are connect with the second storage vat, third concentration sensor and the 4th solenoid valve
Connection；
Second storage vat includes the third cavity for storing high concentration passivator, in the bottom of the third cavity
Equipped with liquid outlet, and liquid outlet is connect by liquid outlet pipe with recovery pond, is pacified in the junction of the liquid outlet pipe and recovery pond
Equipped with the third solenoid valve opened/closed for controlling liquid outlet pipe, the signal input part of the third solenoid valve and second dense
Spend the signal output end connection of sensor；
The recovery pond also has the reflux line connecting with the first storage vat, is equipped with the 4th in the reflux line
Solenoid valve, the 4th solenoid valve are connect with the signal output end of third concentration sensor.
Compared with prior art, beneficial effects of the present invention are as follows:
1. by installing concentration sensor in reaction tank, when the passivating agent concentration that concentration sensor detects is lower than default
When value, reaction tank is discharged in the passivator of low concentration, to guarantee product quality.
2. by setting buffer pool and recovery pond, the passivator of the low concentration to handle reaction tank discharge makes its recovery
To the available concentration of passivation reaction, reduces costs and avoid directly excluding and polluting environment.
3. avoiding liquid-level switch by using the mounting structure of contactless liquid-level switch and directly being connect with passivator
Touching, improves the service life of liquid-level switch.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of metal casting surface passivation device of the present invention.
Fig. 2 is the structural schematic diagram of metal casting surface passivation component of the present invention.
Fig. 3 is the structural schematic diagram that passivator of the present invention recycles component.
Figure label explanation: reaction tank 1, station slot 2, substrate 3, postive stop baffle 4, pressure sensor 5, the first concentration sensing
Device 6, the first storage vat 7, liquid outlet pipe 8, cross slide way 9, slide plate 10, connecting rod 11, driving motor 12, cylinder 13, push rod 14, electricity
Magnet 15, limit sieve plate 16, float plate 17, liquid-level switch 18, buffer pool 19, recovery channel 20, filter screen 21, outflow port 22,
Recovery pond 23, stirring motor 24, agitating shaft 25, stirring fin 26, the second concentration sensor 27, third concentration sensor 28, the
Two storage vats 29, liquid outlet pipe 30, reflux line 31.
Specific embodiment
To be easy to understand the technical means, the creative features, the aims and the efficiencies achieved by the present invention, below with reference to
Specific embodiment, the present invention is further explained.
Referring to figure 1, figure 2 and figure 3, a kind of metal casting surface passivation device of the present invention, including metal casting are blunt
Change component and passivator recycles component；
The metal casting blunting component includes reaction tank 1, and station slot 2 is fixedly installed in the reaction tank 1, described
Station slot 2 includes the substrate 3 for placing metal casting, the postive stop baffle 4 upwardly extended is equipped in the two sides of substrate 3, in institute
The bottom for stating substrate 3 is equipped with for detecting pressure sensor 5 that whether metal casting is in place and dense for detecting passivator
First concentration sensor 6 of degree；
The reaction tank 1 is connected with the first storage vat 7, and first storage vat 7 includes first for storing passivator
Cavity is equipped with liquid outlet in the bottom of first cavity, and liquid outlet is connect by liquid outlet pipe 8 with reaction tank 1, described
The junction of liquid outlet pipe 8 and reaction tank 1 is equipped with the first solenoid valve opened/closed for controlling liquid outlet pipe 8；
It is equipped with handling device in the top of the reaction tank 1, the handling device includes the branch for being set to 1 top of reaction tank
Frame is welded with cross slide way 9 on the bracket, offers guide groove in the inside of cross slide way 9, lives between the guide groove
Dynamic to be connected with slide plate 10, the slide plate 10 is connect by connecting rod 11 with the driving motor 12 being installed on bracket, and the slide plate
10 can move left and right under the promotion of driving motor 12 along guide groove；Cylinder 13, the cylinder are installed on the slide plate 10
13 are connect by push rod 14 with the electromagnet 15 for grabbing metal casting, the signal input of the driving motor 12 and cylinder 13
End is connect with the signal output end of pressure sensor 5；
The second cavity is equipped in the side wall of the reaction tank 1, the second cavity is connected to by inflow hole with reaction tank 1,
Limit sieve plate 16 is fixedly installed in second cavity, the limit sieve plate 16 is located at the top of inflow hole, in limit sieve plate
The float plate 17 that can be moved up and down along the inner wall of second cavity is installed in second cavity of 16 tops, in the float plate
17 top is equipped with liquid-level switch 18, and the signal output end of the liquid-level switch 18 and the signal input part of the first battery valve connect
It connects；
The passivator recycling component includes buffer pool 19, and the buffer pool 19 is connected by recovery channel 20 and reaction tank 1
It connects, is equipped with the second electromagnetism opened/closed for controlling recovery channel 20 in the junction of the recovery channel 20 and reaction tank 1
Valve, the signal input part of second solenoid valve and the signal output end of concentration sensor connect, and are equipped in the buffer pool 19
Strainer 21 offers outflow port 22 in the bottom of buffer pool 19, and the outflow port 22 is connect with recovery pond 23；
Agitating device is installed in the recovery pond 23, the agitating device includes being installed on stirring outside recovery pond 23
Motor 24 is mixed, the output end of the stirring motor 24 is connect with the agitating shaft 25 being installed on inside recovery pond 23, in the stirring
Several stirring fins 26 are installed on axis 25, are also equipped in the recovery pond 23 dense for detecting passivator in recovery pond 23
The second concentration sensor 27 and third concentration sensor 28 of degree, second concentration sensor 27 and the second storage vat 29 connect
It connects, third concentration sensor 28 is connect with the 4th solenoid valve；
Second storage vat 29 includes the third cavity for storing high concentration passivator, at the bottom of the third cavity
Portion is equipped with liquid outlet, and liquid outlet is connect by liquid outlet pipe 30 with recovery pond 23, in the liquid outlet pipe and recovery pond 23
Junction is equipped with the third solenoid valve opened/closed for controlling liquid outlet pipe 30, the signal input of the third solenoid valve
End is connect with the signal output end of the second concentration sensor 27；
The recovery pond 23 also has the reflux line 31 connecting with the first storage vat 7, pacifies in the reflux line 31
Equipped with the 4th solenoid valve, the 4th solenoid valve is connect with the signal output end of third concentration sensor 28.
A kind of metal casting surface passivation method, includes the following steps:
1) electromagnet grabs metal casting at initial station, and driving motor is by driving the guiding of slide plate transversely guide rail
Slot is mobile, and cylinder, electromagnet and metal casting are moved to the top of reaction tank；
2) cylinder starts, and electromagnet and metal casting are moved down, until the contact of the substrate of metal casting and station slot,
Pressure sensor below substrate detects signal, and sends a control signal to the control input of cylinder and driving motor
End, electromagnet put down metal casting；
3) pressure sensor sends a signal to the first solenoid valve of the first storage vat simultaneously, and the first solenoid valve is opened, and first
Passivator in storage vat enters reaction tank, and passivation reaction starts；
4) passivator is entered in the second cavity for connecting with reaction tank by inflow hole, with the raising of passivator liquid level,
Float plate moves up, until contact with the liquid-level switch at the top of the second cavity, liquid-level switch sends control signal to the first solenoid valve,
First solenoid valve is closed, and passivator stops entering reaction tank；
5) with the progress of passivation reaction, the concentration of passivator is begun to decline in reaction tank, until passing lower than the first concentration
The preset value of sensor, at this point, the first concentration sensor sends control signal to second solenoid valve, second solenoid valve is opened, passivation
The recovered pipeline of agent reaches buffer pool, and the outflow port after the filtering of buffer pool, then through buffer pool reaches recovery pond；
6) the second concentration sensor in recovery pond detects the passivator of low concentration, controls the third electricity of the second storage vat
Magnet valve is opened, and the passivator of the high concentration in the second storage vat enters recovery pond, is mixed with the passivator of low concentration, same with this
When, stirring motor is opened, and the mixing of the two is accelerated；
7) the second concentration sensor in recovery pond detects that the passivating agent concentration in recovery pond is restored to can be with metal casting
After part is passivated the concentration of reaction, the 4th solenoid valve of control is opened, and the passivator in recovery pond enters to be reached through reflux line
First storage vat, to be used to subsequent passivation reaction.
The above shows and describes the basic principles and main features of the present invention and the advantages of the present invention.The technology of the industry
Personnel are it should be appreciated that the present invention is not limited to the above embodiments, and the above embodiments and description only describe this
The principle of invention, without departing from the spirit and scope of the present invention, various changes and improvements may be made to the invention, these changes
Change and improvement all fall within the protetion scope of the claimed invention.The claimed scope of the invention by appended claims and its
Equivalent thereof.
The foregoing is only a preferred embodiment of the present invention, but scope of protection of the present invention is not limited thereto,
Anyone skilled in the art in the technical scope disclosed by the present invention, according to the technique and scheme of the present invention and its
It improves design and is subject to equivalent substitution or change, should be covered by the scope of protection of the present invention.
Claims (5)
1. a kind of metal casting surface passivation method, which comprises the steps of:
1) electromagnet grabs metal casting at initial station, and driving motor is by driving the guide groove of slide plate transversely guide rail to move
It is dynamic, cylinder, electromagnet and metal casting are moved to the top of reaction tank；
2) cylinder starts, and electromagnet and metal casting are moved down, until the contact of the substrate of metal casting and station slot, is located at
Pressure sensor below substrate detects signal, and sends a control signal to the control signal of cylinder and driving motor, electricity
Magnet puts down metal casting；
3) pressure sensor sends a signal to the first solenoid valve of the first storage vat simultaneously, and the first solenoid valve is opened, the first storing
Passivator in bucket enters reaction tank, and passivation reaction starts；
4) passivator is entered in the second cavity connecting with reaction tank by inflow hole, with the raising of passivator liquid level, is floated
Plate moves up, until contact with the liquid-level switch at the top of the second cavity, liquid-level switch sends control signal to the first solenoid valve, and first
Solenoid valve is closed, and passivator stops entering reaction tank；
5) with the progress of passivation reaction, the concentration of passivator is begun to decline in reaction tank, until being lower than the first concentration sensor
Preset value, at this point, the first concentration sensor sends control signal to second solenoid valve, second solenoid valve is opened, passivator warp
Recovery channel reaches buffer pool, and the outflow port after the filtering of buffer pool, then through buffer pool reaches recovery pond；
6) the second concentration sensor in recovery pond detects the passivator of low concentration, controls the third solenoid valve of the second storage vat
It opens, the passivator of the high concentration in the second storage vat enters recovery pond, mixes with the passivator of low concentration, at the same time, stirs
Motor opening is mixed, the mixing of the two is accelerated；
7) the second concentration sensor in recovery pond detect the passivating agent concentration in recovery pond restore to can with metal casting into
After the concentration of row passivation reaction, the 4th solenoid valve of control is opened, and the passivator in recovery pond, which enters, reaches first through reflux line
Storage vat, to be used to subsequent passivation reaction.
2. metal casting surface passivation method according to claim 1, which is characterized in that the method uses metal casting
Blunting component and passivator recycle component.
3. metal casting surface passivation method according to claim 2, which is characterized in that
The metal casting blunting component includes reaction tank, and station slot, the station slot are fixedly installed in the reaction tank
Including the substrate for placing metal casting, the postive stop baffle upwardly extended is equipped in the two sides of substrate, at the bottom of the substrate
Portion is equipped with for detecting the pressure sensor whether metal casting is in place and the first concentration for detecting passivating agent concentration
Sensor, the signal output end of pressure sensor are connect with the signal input part of the first solenoid valve of the first storage vat；
First storage vat includes the first cavity for storing passivator, is equipped with liquid in the bottom of first cavity
Mouthful, and liquid outlet is connect by liquid outlet pipe with reaction tank, is equipped with and is used in the junction of the liquid outlet pipe and reaction tank
The first solenoid valve that control liquid outlet pipe opens/closes；
It is equipped with handling device in the top of the reaction tank, the handling device includes the bracket being set to above reaction tank,
It is welded with cross slide way on the bracket, guide groove is offered on the inside of cross slide way, is flexibly connected between the guide groove
There is slide plate, the slide plate is connect by connecting rod with the driving motor being installed on bracket, and the slide plate can be in driving motor
It is moved left and right under promotion along guide groove；Cylinder is installed on the slide plate, the cylinder is by push rod and for grabbing metal
The electromagnet of casting connects, the signal output end connection of the signal input part and pressure sensor of the driving motor and cylinder.
4. metal casting surface passivation method according to claim 1 or 3, which is characterized in that
The second cavity is equipped in the side wall of the reaction tank, the second cavity is connected to by inflow hole with reaction tank, described the
Limit sieve plate is fixedly installed in two cavitys, the limit sieve plate is located at the top of inflow hole, second above limit sieve plate
The float plate that can be moved up and down along the inner wall of second cavity is installed in cavity, liquid is installed at the top of the float plate
Bit switch, the signal output end of the liquid-level switch are connect with the signal input part of the first battery valve.
5. metal casting surface passivation method according to claim 2, it is characterised in that:
The passivator recycling component includes buffer pool, and the buffer pool is connect by recovery channel with reaction tank, at described time
The junction of closed tube road and reaction tank is equipped with the second solenoid valve opened/closed for controlling recovery channel, second solenoid valve
The signal output end of signal input part and concentration sensor connects, and filter screen is equipped in the buffer pool, at the bottom of buffer pool
Portion offers outflow port, and the outflow port is connect with recovery pond；
Agitating device is installed in the recovery pond, the agitating device includes the stirring motor being installed on outside recovery pond,
The output end of the stirring motor and the stirring axis connection being installed on inside recovery pond, are equipped with several stir on the agitating shaft
Fin is mixed, the second concentration sensor and third for detecting passivating agent concentration in recovery pond are also equipped in the recovery pond
Concentration sensor, second concentration sensor are connect with the second storage vat, and third concentration sensor is connect with the 4th solenoid valve；
Second storage vat includes the third cavity for storing high concentration passivator, is equipped in the bottom of the third cavity
Liquid outlet, and liquid outlet is connect by liquid outlet pipe with recovery pond, is equipped in the junction of the liquid outlet pipe and recovery pond
The third solenoid valve opened/closed for controlling liquid outlet pipe, the signal input part of the third solenoid valve and the second concentration pass
The signal output end of sensor connects；
The recovery pond also has the reflux line connecting with the first storage vat, and the 4th electromagnetism is equipped in the reflux line
Valve, the 4th solenoid valve are connect with the signal output end of third concentration sensor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910115642.9A CN109735835A (en) | 2019-02-15 | 2019-02-15 | A kind of metal casting surface passivation method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910115642.9A CN109735835A (en) | 2019-02-15 | 2019-02-15 | A kind of metal casting surface passivation method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109735835A true CN109735835A (en) | 2019-05-10 |
Family
ID=66367467
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910115642.9A Withdrawn CN109735835A (en) | 2019-02-15 | 2019-02-15 | A kind of metal casting surface passivation method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109735835A (en) |
-
2019
- 2019-02-15 CN CN201910115642.9A patent/CN109735835A/en not_active Withdrawn
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| Date | Code | Title | Description |
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| PB01 | Publication | ||
| PB01 | Publication | ||
| WW01 | Invention patent application withdrawn after publication |
Application publication date: 20190510 |
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| WW01 | Invention patent application withdrawn after publication |