CN109554652A - Bolt surface treatment process - Google Patents
Bolt surface treatment process Download PDFInfo
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- CN109554652A CN109554652A CN201811533265.2A CN201811533265A CN109554652A CN 109554652 A CN109554652 A CN 109554652A CN 201811533265 A CN201811533265 A CN 201811533265A CN 109554652 A CN109554652 A CN 109554652A
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- bolt
- zinc liquid
- surface treatment
- treatment process
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- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C2/00—Hot-dipping or immersion processes for applying the coating material in the molten state without affecting the shape; Apparatus therefor
- C23C2/04—Hot-dipping or immersion processes for applying the coating material in the molten state without affecting the shape; Apparatus therefor characterised by the coating material
- C23C2/06—Zinc or cadmium or alloys based thereon
-
- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C2/00—Hot-dipping or immersion processes for applying the coating material in the molten state without affecting the shape; Apparatus therefor
- C23C2/02—Pretreatment of the material to be coated, e.g. for coating on selected surface areas
-
- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C2/00—Hot-dipping or immersion processes for applying the coating material in the molten state without affecting the shape; Apparatus therefor
- C23C2/26—After-treatment
-
- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C2/00—Hot-dipping or immersion processes for applying the coating material in the molten state without affecting the shape; Apparatus therefor
- C23C2/34—Hot-dipping or immersion processes for applying the coating material in the molten state without affecting the shape; Apparatus therefor characterised by the shape of the material to be treated
-
- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23G—CLEANING OR DE-GREASING OF METALLIC MATERIAL BY CHEMICAL METHODS OTHER THAN ELECTROLYSIS
- C23G1/00—Cleaning or pickling metallic material with solutions or molten salts
- C23G1/02—Cleaning or pickling metallic material with solutions or molten salts with acid solutions
- C23G1/04—Cleaning or pickling metallic material with solutions or molten salts with acid solutions using inhibitors
-
- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23G—CLEANING OR DE-GREASING OF METALLIC MATERIAL BY CHEMICAL METHODS OTHER THAN ELECTROLYSIS
- C23G1/00—Cleaning or pickling metallic material with solutions or molten salts
- C23G1/02—Cleaning or pickling metallic material with solutions or molten salts with acid solutions
- C23G1/08—Iron or steel
- C23G1/088—Iron or steel solutions containing organic acids
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- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Mechanical Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Coating With Molten Metal (AREA)
Abstract
The invention discloses a kind of bolt surface treatment process, comprising the following steps: bolt is placed in the water containing aqueous cleaning agent and passes through ultrasonic cleaning by cleaning；Pickling carries out pickling to the bolt after over cleaning using Compound-acid；Auxiliary agent is added, the bolt through overpickling is placed in fluxing agent and is impregnated；Drying preheating, pulls bolt out from fluxing agent, then bolt is placed under nitrogen environment and is dried and is heated to 130-190 DEG C.The present invention is cleaned by surface of the ultrasonic wave to bolt, and cleaning capacity is strong, and cleaning efficiency is high；Simplify cleaning process；Bolt is placed in nitrogen environment heating, and bolt surface will not change, and improves the zinc-plated effect of bolt.
Description
Technical field
The invention belongs to field of metal surface treatment technology, more particularly, to a kind of bolt surface treatment process.
Background technique
Bolt is essential workpiece in daily life and industrial production, be widely applied in every field, use
Fixation between part and part, operation are simple, it can be achieved that carrying out efficient fixed effect to components；As industry is sent out
The fast development of exhibition, the requirement to bolt also gradually increase, and especially for outdoor bolt, require to bolt
The comprehensive advantages such as intensity of applauding height, wearability and anticorrosion.
In order to improve the overall performance of bolt, at present other than technique when producing to bolt has done optimization, also to life
The bolt surface that output is come needs to carry out additional working process；It is big that hot dip galvanizing process can plate a layer thickness on the surface of bolt
In 5 μm of zinc layers, the tarnish protection of bolt can be improved, so that the intensity of bolt is improved；But in hot dip galvanizing process mistake
Simply by the water containing water-based cleaner during Cheng Zhong needs to clean workpiece, but existing hot galvanizing is cleaned
It is embathed, except time-consuming for degreasing during on the one hand it is embathed, influences the processing efficiency to bolt, on the other hand remove grease
It is not thorough, each position of bolt can not be cleaned completely, the zinc layers fastness that will cause in bolt surface plating is poor, easily de-
It falls.
Summary of the invention
The present invention for overcome the deficiencies in the prior art, provides that a kind of cleaning effect is good, coating is not easily to fall off, service life
Long bolt surface treatment process.
To achieve the goals above, the invention adopts the following technical scheme: a kind of bolt surface treatment process, including it is following
Step:
1) it cleans, bolt is placed in the water containing aqueous cleaning agent and passes through ultrasonic cleaning；
2) pickling carries out pickling to the bolt after over cleaning using Compound-acid；
3) auxiliary agent is added, the bolt through overpickling is placed in fluxing agent and is impregnated；
4) drying preheating, pulls bolt out from fluxing agent, then bolt is placed under nitrogen environment and is dried and is heated to
130-190℃；
5) hot galvanizing melts the zinc metal in Thermal zinc plating bath into zinc liquid, zinc liquid is then warming up to 500-550 DEG C, after preheated
Bolt by passing through in zinc liquid, bolt is 10-25S in the time of zinc liquid;
6) arrange, using vibrator remove bolt surface more than zinc and list edge；
7) it is passivated, using chromating bolt；
8) cooling, bolt is cooled to room temperature using water cooling/air-cooled
The present invention is cleaned by surface of the ultrasonic wave to bolt, and bolt surface can be quickly removed during cleaning
Grease and the foul for being deposited in bolt surface, therefore bolt surface overall cleanliness factor is high, which not only improves bolt and exists
Zinc-plated effect in hot galvanizing process, and the cleaning capacity is strong, can quickly clean, be improved to bolt to bolt
Clean efficiency；Process needed for simplifying conventional clean only needs the cleaning of two steps can be realized；It, will during pre-heating drying
Bolt is placed under nitrogen environment and is heated, prevented at high temperature the gases such as oxygen, carbon dioxide be in contact with bolt and
Bolt surface is caused to be oxidized to iron oxide, effect when causing bolt zinc-plated is affected；Spiral shell has been ensured in the environment of nitrogen
Bolt will not change in zinc-plated condition bolt surface, improve the zinc-plated effect of bolt.
Preferably, the compound acid starting material includes according to components by weight percent ratio
2.0-3.5 parts of sulfuric acid
0.6-1.0 parts of thiocarbamide
0.2-0.45 parts of corrosion inhibiter
0.1-0.6 parts of sulfamic acid
.3-1.6 parts of phosphatase 11
Deionized water surplus
Wherein after the sulfuric acid, thiocarbamide, corrosion inhibiter, sulfamic acid and phosphoric acid mixing, deionized water is added and adjusts PH to 3.0-
4.5。
Preferably, the compound acid starting material includes according to components by weight percent ratio
2.8-3.2 parts of sulfuric acid
0.7-0.85 parts of thiocarbamide
0.32-0.38 parts of corrosion inhibiter
0.3-0.45 parts of sulfamic acid
.42-1.53 parts of phosphatase 11
Deionized water surplus
Wherein after the sulfuric acid, thiocarbamide, corrosion inhibiter, sulfamic acid and phosphoric acid mixing, deionized water is added and adjusts PH to 3.8-
4.2。
Preferably, the frequency of the ultrasonic wave in step 1) is 25-45KHz, power density is set in 0.4-1.5W/C；It should
Ultrasonic frequency can reach optimal cleaning effect.
Preferably, the time of the passivation is 5-15min.
Preferably, the time that bolt impregnates in fluxing agent in step 3) is 180-300S.
Preferably, galvanizing bath described in step 5) includes
Shell；
Groove body is contained with zinc liquid；
Heating member, to be heated to preset temperature to the intracorporal zinc liquid of slot in the groove body；
Thermal insulator is set between the groove body and the shell, and the isolation intracorporal heat of slot is distributed to shell；
Hot dipping device divides multilayer to place bolt, and conveys bolt and progressed into zinc liquid by one end of shell in the middle to impregnate spiral shell
Bolt, after bolt enters to zinc liquid, which shakes multiple up and down.
It can disposably be carried by setting hot dipping device and carry out hot dip operation in a large amount of bolt to zinc liquid, process heat
That soaks is high-efficient；It is placed directly into hot dipping device during this period because of bolt, it is rambling inside hot dipping device,
Therefore when bolt is in zinc liquid, by shake so that the spacing between bolt changes, so that zinc liquid can be more preferable
Enter between bolt and bolt, realize whole bolt can touch zinc liquid, should during realize bolt it is zinc-plated uniformly,
Bolt uniformity can effectively be improved.
Preferably, the hot dipping device includes for placing the placement basket of bolt, for driving the placement basket by institute
Driving part and shake component that shell one end moves to the shell other end are stated, the shake component and the placement basket match
It closes；Placing basket by setting can be convenient for directly placing bolt, and it is convenient to place to bolt, when being placed to bolt,
Bolt can be tiled, the contact area that can improve bolt and zinc liquid is big；And driving part, which is arranged, to place basket with driving
It is moved, by the controllable placement basket of driving part in the rate by groove body, to control bolt in zinc liquid
Time.
Preferably, the basket of placing includes the first supporting element and be set to institute that frame body and the frame body are detachably connected
The second supporting element above frame body is stated, first supporting element is equipped with multiple first through hole, and second supporting element is equipped with
Multiple second through-holes；By be arranged the first, second supporting element may be implemented in be placed into bolt when, bolt is layered,
Therefore it ensures the contact area between bolt, improves bolt with zinc liquid and want the effect contacted；And the first, second general rule, which is arranged, to be had
Effect enters in frame body convenient for zinc liquid, improves the efficiency of zinc liquid submergence bolt.
Preferably, the frame body lower part is equipped with scraping fluid push plate, which scrapes before the frame body enters zinc liquid
Zinc liquid upper layer liquid level；The liquid level that zinc liquid upper layer cools away can be scraped by the way that scraping fluid push plate is arranged, so that bolt be avoided to enter
When in zinc liquid, cooling zinc film is attached to the surface of bolt.
In conclusion the present invention is cleaned by surface of the ultrasonic wave to bolt, cleaning capacity is strong, and cleaning efficiency is high；
Simplify cleaning process；Bolt is placed in nitrogen environment heating, and bolt surface will not change, and improves the zinc-plated effect of bolt.
Detailed description of the invention
Fig. 1 is the structural diagram of the present invention.
Fig. 2 is the enlarged drawing of A in Fig. 1.
Fig. 3 is the enlarged drawing of B in Fig. 1.
Fig. 4 is cross-sectional view of the invention.
Fig. 5 is the explosive view of Fig. 4.
Fig. 6 is partial structural diagram one of the present invention.
Fig. 7 is the explosive view of Fig. 6.
Fig. 8 is partial sectional view of the present invention.
Fig. 9 is the explosive view of Fig. 8.
Specific embodiment
Embodiment one
A kind of bolt surface treatment process, comprising the following steps:
1) it cleans, bolt is placed in the water containing aqueous cleaning agent through ultrasonic cleaning, the frequency of ultrasonic wave is 25KHz,
Power density is set in 0.4W/C, and bolt is totally submerged by water when cleaning, which can effectively remove the grease on bolt,
Bolt after ultrasonic cleaning is rinsed to remove the aqueous cleaning agent on bolt by clear water；
2) pickling carries out pickling to the bolt after over cleaning using Compound-acid, and the temperature when pickling is controlled at 35 DEG C；
3) auxiliary agent is added, the bolt through overpickling is placed in fluxing agent and is impregnated, is added during immersion appropriate
Anti-knock agent；The time that bolt impregnates in fluxing agent is 180S；
4) drying preheating, pulls bolt out from fluxing agent, then bolt is placed under nitrogen environment and is dried and is heated to 130
℃；
5) hot galvanizing melts the zinc metal in Thermal zinc plating bath into zinc liquid, zinc liquid is then warming up to 500 DEG C, it is preheated after spiral shell
For bolt by passing through in zinc liquid, bolt is 10S in the time of zinc liquid；
6) arrange, using vibrator remove bolt surface more than zinc and list edge；
7) it is passivated, using chromating bolt, the time of the passivation is 5min；
8) cooling, bolt is cooled to room temperature using water cooling/air-cooled.
Preferably, the compound acid starting material includes 2.8 parts of sulfuric acid, 0.7 part of thiocarbamide, corrosion inhibiter according to components by weight percent ratio
0.32 part, 0.3 part of sulfamic acid .42 parts of phosphatase 11 and surplus are deionized water；The wherein sulfuric acid, thiocarbamide, corrosion inhibiter, amino
After sulfonic acid and phosphoric acid mixing, deionized water is added and adjusts PH to 3.8.
Embodiment two
A kind of bolt surface treatment process, comprising the following steps:
1) it cleans, bolt is placed in the water containing aqueous cleaning agent through ultrasonic cleaning, the frequency of ultrasonic wave is 38KHz,
Power density is set in 0.9W/C, and bolt is totally submerged by water when cleaning, which can effectively remove the grease on bolt,
Bolt after ultrasonic cleaning is rinsed to remove the aqueous cleaning agent on bolt by clear water；
2) pickling carries out pickling to the bolt after over cleaning using Compound-acid, and the temperature when pickling is controlled at 46 DEG C；
3) auxiliary agent is added, the bolt through overpickling is placed in fluxing agent and is impregnated, is added during immersion appropriate
Anti-knock agent；The time that bolt impregnates in fluxing agent is 260S；
4) drying preheating, pulls bolt out from fluxing agent, then bolt is placed under nitrogen environment and is dried and is heated to 156
℃；
5) hot galvanizing melts the zinc metal in Thermal zinc plating bath into zinc liquid, zinc liquid is then warming up to 526 DEG C, it is preheated after spiral shell
For bolt by passing through in zinc liquid, bolt is 18S in the time of zinc liquid；
6) arrange, using vibrator remove bolt surface more than zinc and list edge；
7) it is passivated, using chromating bolt, the time of the passivation is 10min；
8) cooling, bolt is cooled to room temperature using water cooling/air-cooled.
Preferably, the compound acid starting material includes 3.0 parts of sulfuric acid, 0.8 part of thiocarbamide, corrosion inhibiter according to components by weight percent ratio
0.34 part, 0.38 part of sulfamic acid .48 parts of phosphatase 11 and surplus are deionized water；The wherein sulfuric acid, thiocarbamide, corrosion inhibiter, ammonia
After base sulfonic acid and phosphoric acid mixing, deionized water is added and adjusts PH to 4.0.
Embodiment three
A kind of bolt surface treatment process, comprising the following steps:
1) it cleans, bolt is placed in the water containing aqueous cleaning agent through ultrasonic cleaning, the frequency of ultrasonic wave is 45KHz,
Power density is set in 1.5W/C, and bolt is totally submerged by water when cleaning, which can effectively remove the grease on bolt,
Bolt after ultrasonic cleaning is rinsed to remove the aqueous cleaning agent on bolt by clear water；
2) pickling carries out pickling to the bolt after over cleaning using Compound-acid, and the temperature when pickling is controlled at 55 DEG C；
3) auxiliary agent is added, the bolt through overpickling is placed in fluxing agent and is impregnated, is added during immersion appropriate
Anti-knock agent；The time that bolt impregnates in fluxing agent is 300S；
4) drying preheating, pulls bolt out from fluxing agent, then bolt is placed under nitrogen environment and is dried and is heated to 190
℃；
5) hot galvanizing melts the zinc metal in Thermal zinc plating bath into zinc liquid, zinc liquid is then warming up to 550 DEG C, it is preheated after spiral shell
For bolt by passing through in zinc liquid, bolt is 25S in the time of zinc liquid；
6) arrange, using vibrator remove bolt surface more than zinc and list edge；
7) it is passivated, using chromating bolt, the time of the passivation is 15min；
8) cooling, bolt is cooled to room temperature using water cooling/air-cooled.
Preferably, the compound acid starting material includes 3.2 parts of sulfuric acid, 0.85 part of thiocarbamide, inhibition according to components by weight percent ratio
0.38 part of agent, 0.45 part of sulfamic acid .53 parts of phosphatase 11 and surplus are deionized water；Wherein the sulfuric acid, thiocarbamide, corrosion inhibiter,
After sulfamic acid and phosphoric acid mixing, deionized water is added and adjusts PH to 4.2.
As shown in figs 1-9, Thermal zinc plating bath described in embodiment 1-3 includes shell 1, groove body 2, heating member 3, thermal insulator 4
And hot dipping device 5, wherein the shell 1 is a rectangular metal shell, the groove body 2 is rectangular crucible, can high temperature resistant；Institute
Stating heating member 3 is the heating wire for being enclosed with ceramic material, and the heating member 3 is directly in the groove body 2, therefore to groove body
After zinc ingot metal is added in 2, by 3 heat temperature raising of heating member, so that zinc ingot metal is fused into zinc liquid, and 3 persistently overheating of heating member, make
It obtains zinc liquid and reaches preset temperature；For the thermal insulator 4 between the groove body 2 and the shell 1, which is foaming
Cement, the thermal insulator 4 are located between the groove body 2 and the shell 1, therefore are added in heating member 3 to the zinc liquid in groove body 2
When hot, thermal insulator 4 can completely cut off the intracorporal most of heat of slot and pass out in groove body 2.
Further, the hot dipping device 5 its can be divided into multilayer to put bolt, the hot dipping device 5 can convey bolt by
One end of shell 1 moves to the other end of shell 1, and bolt can enter in zinc liquid during transportation, so that zinc liquid pair
Bolt is submerged comprehensively, and after bolt enters in zinc liquid, which can shake up and down repeatedly, so that bolt
It shakes；Specifically, the hot dipping device 5 includes placing basket 51, driving part 52 and shake component 53, wherein the placement
Basket 51 includes frame body 510, the first supporting element 511 and the second supporting element 512, and the frame body 510 is a metal frame, the frame body 510
It is similar to inverted boss-shaped；It is equipped with scraping fluid push plate 517 in the lower end of the frame body 510, which is that an inclination is set
The metal plate set, when the driving part drives scraping fluid push plate to move downward, scraping fluid push plate elder generation and the intracorporal zinc liquid of slot
The cooling surface layer in zinc liquid upper layer is first wiped in contact off, and then frame body can just enter in zinc liquid；In the upper end of the frame body 510
Equipped with scraper plate 518, when the frame body 510 moves upwards, the scraper plate 518 can first strike off the zinc liquid on upper layer, to keep away
Exempt from the zinc liquid that upper layer cools away to be attached on bolt.
Specifically, being equipped with the first support rim 501 on the frame body 510,511 frame of the first supporting element is described the
On one support rim 501；First supporting element 511 is a wire basket, and bolt is laid on first supporting element 511, should
First supporting element, 511 upper end outward bending forms the first support convex edge 505, and the first support 505 frame of convex edge is described first
On support rim 501, first supporting element 511 be equipped with multiple first through hole 515, zinc liquid can from the first through hole 515 into
Enter in the first supporting element 511；The second support rim 502, second support rim 502 are equipped on the frame body 510
Positioned at the top of first support rim 501；Second supporting element 512 is located at first supporting element, 511 top, this
Two supporting elements, 512 top turns down the second support of formation convex edge 506 outward, and the second support 506 frame of convex edge is to described second
It supports on protrusion 502；Second supporting element 512 is equipped with multiple second through-holes 516, and zinc liquid can be entered by the second through-hole 516
Onto second supporting element 512；The lower end for stating the second supporting element 512 is equipped with the deflector 519 being obliquely installed, the deflector
519 be the smooth metal plates in end face, the setting of deflector 519 can be ensured taken out in groove body in frame body 510 after, second
Zinc liquid will not be fallen directly on the first supporting element 511 in support member 512, and there is no mistakes for the bolt on the first supporting element 511 of guarantee
More list edges；The first supporting element, the second supporting element are only for example in the present embodiment, can also there is third support in actual production
Part, the 4th supporting element, the 5th supporting element etc. can be set according to frame body height.
Further, the driving part 52 includes tracks 521, carrier chain 522 and actuator 523, the movement
Track 521 is the intermediate metal track to lower recess, which is two, and one is set to the side of the shell 1,
Another is set to the other side of the shell 1；The carrier chain 522 is metal bracelet (being brief schematic diagram in figure), this is defeated
Chain 522 is sent to arrange along the direction of the tracks 521, the actuator 523 is servo motor, is set on the actuator 523
There is output shaft 524, the driving gear 525 matched with the carrier chain 522, fortune are equipped in one end of the tracks 521
521 other end of dynamic rail road is equipped with the driven gear 526 matched with carrier chain 522, is connected with one turn on the driving gear 525
Moving axis 527, the rotation axis 527 are connected with the output shaft 524 by drive mechanism；It is set in the tracks 521
There are multiple locating wheels 528, the locating wheel 528 is for limiting 522 global shape of carrier chain.
Specifically, the drive mechanism includes fixed frame 541, the first umbrella tooth 541 being connected with the output shaft 524,
Two umbrella tooths 542, the drive sleeve 543 being connect with 527 rotation stop of rotation axis and the driving cylinder being connected with the drive sleeve 543
544, wherein first umbrella tooth 541 is meshed with second umbrella tooth 542, therefore when the actuator 523 is opened,
First umbrella tooth 541 will drive second umbrella tooth rotation 542 always, second umbrella tooth 542 by bearing with it is described solid
Determine frame 541 to be connected, the rotation axis 527 passes through in the fixed frame 541, and the rotation axis 527 and the fixed frame 541 are logical
Bearing positioning is crossed, multiple rotation stop female rails 551 are equipped in the rotation axis 527；The drive sleeve 543 is a special bearing,
The drive sleeve 543 has inner and outer rings, and the inner ring of the drive sleeve 543 is equipped with multiple rotation stop protrusions 552, the rotation stop protrusion
552 are inserted into the rotation stop female rail 551, and in inner ring one end of the drive sleeve 543, tool is there are three grafting protrusion 553,
Second umbrella tooth 542 is equipped with multiple grafting recess portions 554；The driving cylinder 544 is a regular cyclical, the driving cylinder
544 piston shaft is connected with the outer ring of the drive sleeve 543, therefore under the driving cylinder 544 promotion, the drive sleeve
543 can fore-aft motion, the inner ring for realizing drive sleeve 543 in this process is connect with 542 rotation stop of the second umbrella tooth, to pass
Moving axis 527 and second umbrella tooth 541 rotate synchronously.
In the process of the invention, bolt needs to stay for some time in zinc liquid after entering in zinc liquid,
Therefore inside this period of stop, above-mentioned carrier chain can stop transportation work, and the mode that tradition stops working is usually to make
Motor stops working, but more of short duration because of the time stopped in the present invention, if the side to be stopped working using motor
Formula will cause motor and constantly start and close in a short time, and one side increases the consumption of electric power, on the other hand can make
It is easily damaged at motor, internal aging or burn-up；And by the setting of drive mechanism, by driving cylinder at interval of one section
Time pushes drive sleeve fore-aft motion once to realize that carrier chain stops and moves, and motor is always with constant power during being somebody's turn to do
The case where working, effectively motor capable of being avoided constantly to restart and energy consumption is caused to increase, the same set-up mode have
The protection motor of effect.
Further, the carrier chain 522 is detachably connected with the frame body 521 by a connection structure, the connection knot
Structure includes multiple locating pieces 561 being connected with the carrier chain 522 and the link block 562 being connected with the frame body 521, the company
Connect is to be detachably connected between block 562 and the locating piece 561；Specifically, the locating piece 561 is equipped with a positioning groove
563, the link block 562 is equipped with the Connection protrusion 564 that can be plugged into the positioning groove 563,561 He of locating piece
The link block 562 is that metal is made, and is equipped with the first magnetic part 565, the Connection protrusion in 563 bottom of positioning groove
564 are equipped with the second magnetic part 566, when the Connection protrusion 564 is inserted into the positioning groove 563, described the
One magnetic part 565 and the second magnetic part 566 can attract each other.
Specifically, the variation because carrier chain 522 can bend etc. in the process of movement, in order to preferably adapt to
The variation of carrier chain is equipped with multiple elastic components 567 in the bottom of the locating piece 561, which is spring, the bullet
Property part 567 it is Nian Jie with the carrier chain 522, can also be used welding certainly, or use other dismountable connection types,
Specific connection type can determine as needed, and the present invention is connected by the way of bonding；It is equipped in the tracks 521 logical
Slot 581, a positioning rod 529 is connected on the positioning gear 528, and the side wall of the tracks 521 is equipped with shake gas
Cylinder 59, the shake cylinder 59 are connected with the locating rod 529, therefore when the frame body 541 moves to minimum position, described
It is up and down that shake cylinder 59 will push the locating rod 529, to drive the positioning gear 528 to move up and down, thus real
Existing frame body 541 moves up and down.It is equipped with conducting element 10 in one end of the shell, which is a metal plate, in the frame
After body 541 is pulled out out of groove body 2, the zinc liquid placed in basket can be flowed on conducting element 10, in the groove body then flowed back into again.
Claims (10)
1. a kind of bolt surface treatment process, which comprises the following steps:
1) it cleans, bolt is placed in the water containing aqueous cleaning agent and passes through ultrasonic cleaning；
2) pickling carries out pickling to the bolt after over cleaning using Compound-acid；
3) auxiliary agent is added, the bolt through overpickling is placed in fluxing agent and is impregnated；
4) drying preheating, pulls bolt out from fluxing agent, then bolt is placed under nitrogen environment and is dried and is heated to
130-190℃；
5) hot galvanizing melts the zinc metal in Thermal zinc plating bath into zinc liquid, zinc liquid is then warming up to 500-550 DEG C, after preheated
Bolt by passing through in zinc liquid, bolt is 10-25S in the time of zinc liquid；
6) arrange, using vibrator remove bolt surface more than zinc and list edge；
7) it is passivated, using chromating bolt；
8) cooling, bolt is cooled to room temperature using water cooling/air-cooled.
2. a kind of bolt surface treatment process according to claim 1, it is characterised in that: the compound acid starting material is according to weight
Measuring component ratio includes
Wherein after the sulfuric acid, thiocarbamide, corrosion inhibiter, sulfamic acid and phosphoric acid mixing, deionized water is added and adjusts PH to 3.0-
4.5。
3. a kind of bolt surface treatment process according to claim 2, it is characterised in that: the compound acid starting material is according to weight
Measuring component ratio includes
Wherein after the sulfuric acid, thiocarbamide, corrosion inhibiter, sulfamic acid and phosphoric acid mixing, deionized water is added and adjusts PH to 3.8-
4.2。
4. a kind of bolt surface treatment process according to claim 1, it is characterised in that: the frequency of the ultrasonic wave in step 1)
Rate is 25-45KHz, and power density is set in 0.4-1.5W/C.
5. a kind of bolt surface treatment process according to claim 1, it is characterised in that: the time of the passivation is 5-
15min。
6. a kind of bolt surface treatment process according to claim 1, it is characterised in that: bolt is in fluxing agent in step 3)
The time of middle immersion is 180-300S.
7. a kind of bolt surface treatment process according to claim 1, it is characterised in that: galvanizing bath packet described in step 5)
It includes
Shell (1)；
Groove body (2), is contained with zinc liquid；
Heating member (3) is set in the groove body (2) to be heated to preset temperature to the zinc liquid in groove body (2)；
Thermal insulator (4) is set between the groove body (2) and the shell (1), and the heat in isolation groove body (2) is distributed to shell
(1) on；
Hot dipping device (5) divides multilayer to place bolt, and convey bolt by one end of shell (1) progress into in zinc liquid with
Bolt is impregnated, after bolt enters to zinc liquid, which shakes repeatedly up and down.
8. a kind of bolt surface treatment process according to claim 1, it is characterised in that: the hot dipping device (5) includes
For placing the placement basket (51) of bolt, for driving the placement basket (51) to move to shell (1) by the shell (1) one end
The driving part (52) of the other end and shake component (53), the shake component (53) match with the placement basket (51).
9. a kind of bolt surface treatment process according to claim 8, it is characterised in that: the placement basket (51) includes frame
Body (510), the first supporting element (511) being detachably connected with the frame body (510) and be set to above the frame body (510) the
Two supporting elements (512), first supporting element (511) are equipped with multiple first through hole (515), second supporting element (512)
It is equipped with multiple second through-holes (516).
10. a kind of bolt surface treatment process according to claim 9, it is characterised in that: frame body (510) lower part is set
There are scraping fluid push plate (517), which scrapes zinc liquid upper layer liquid level before the frame body (510) enter zinc liquid.
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Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101634030A (en) * | 2009-01-22 | 2010-01-27 | 湖南省湘电试验研究院有限公司 | Acid-cleaning inhibiter for cleaning boiler and use method thereof |
| CN106244964A (en) * | 2016-08-29 | 2016-12-21 | 海盐宝利机械有限公司 | Galvanizing continuous process system |
| CN108754375A (en) * | 2018-08-17 | 2018-11-06 | 云南宏盛铁塔实业有限公司 | A kind of hot dip galvanizing process |
-
2018
- 2018-12-14 CN CN201811533265.2A patent/CN109554652B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101634030A (en) * | 2009-01-22 | 2010-01-27 | 湖南省湘电试验研究院有限公司 | Acid-cleaning inhibiter for cleaning boiler and use method thereof |
| CN106244964A (en) * | 2016-08-29 | 2016-12-21 | 海盐宝利机械有限公司 | Galvanizing continuous process system |
| CN108754375A (en) * | 2018-08-17 | 2018-11-06 | 云南宏盛铁塔实业有限公司 | A kind of hot dip galvanizing process |
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