CN107937854A - A kind of galvanizing by dipping processing technology - Google Patents
A kind of galvanizing by dipping processing technology Download PDFInfo
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- CN107937854A CN107937854A CN201710955584.1A CN201710955584A CN107937854A CN 107937854 A CN107937854 A CN 107937854A CN 201710955584 A CN201710955584 A CN 201710955584A CN 107937854 A CN107937854 A CN 107937854A
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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
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C18/00—Alloys based on zinc
-
- 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
- C23C2/003—Apparatus
-
- 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
Abstract
The invention discloses a kind of galvanizing by dipping processing technology, comprise the following steps：（1）Degreasing；（2：35 40min of washing are carried out to workpiece using hydrochloric acid solution, workpiece is rinsed using clear water afterwards；（3）With：Step（2）After the middle current for rinsing workpiece carry out neutralization reaction to neutralization pond, then outwardly discharge；（4）Help plating：Workpiece is placed in 60 80 DEG C of quickening liquid to the reaction for carrying out 10 12s；（5）It is dry：Workpiece carries out the drying of 1 2min in 130 140 DEG C of hothouse, removes the moisture of workpiece surface；（6）Hot-dip；（7）Cooling.The present invention effectively improves product quality, hot-dip is efficient by adding Al and Ni in the plating solution；Secondly, first it is about to workpiece before hot-dip to be reacted with quickening liquid, activates workpiece surface, increase Zinc attachability, improve workpiece quality, improves production efficiency.
Description
Technical field
The invention belongs to galvanizing by dipping technical field, more particularly, to a kind of galvanizing by dipping processing technology.
Background technology
Galvanizing is to make molten metal and iron-based precursor reactant and produce alloy-layer, so that matrix is mutually tied with both coating
Close.In existing hot dip galvanizing process, adhesive force of the plating solution on workpiece is poor, and zinc coating thickness is difficult to up to standard, workpiece's qualification rate height,
Be frequently necessary to do over again or repeatedly process, efficient under.And after plating solution is attached on workpiece, the uniformity is not high, workpiece surface holds
Easily there are aberration, dull gray coating is also easily formed.
The content of the invention
The present invention is in order to overcome the deficiencies of the prior art and provide a kind of work efficiency height, the uniform galvanizing by dipping of coating adds
Work technique.
To achieve these goals, the present invention uses following technical scheme：A kind of galvanizing by dipping processing technology, including it is following
Step：
（1）Degreasing：Workpiece to be processed is placed in degreaser and processes 20-30min, the temperature of degreaser is 80-85 DEG C；
（2）Pickling：Washing 35-40min is carried out to workpiece using hydrochloric acid solution, workpiece is rinsed using clear water afterwards；
（3）Waste liquid neutralizes：Step（2）After the middle current for rinsing workpiece carry out neutralization reaction to neutralization pond, then outwardly discharge；
（4）Help plating：Workpiece is placed in 60-80 DEG C of quickening liquid and carries out the reaction of 10-12s；
（5）It is dry：Workpiece carries out the drying of 1-2min in 130-140 DEG C of hothouse, removes the moisture of workpiece surface；
（6）Hot-dip：Above-mentioned workpiece is incorporated into hot-dip 2-4min in 440-460 DEG C of plating solution；The preparation side of the plating solution
Method is：Al 0.006% ~ 0.008%, Ni 0.008% ~ 0.01% are incorporated into molten zinc liquid, then are melted, plating is made
Liquid;
（7）Cooling：Workpiece is air-dried using fan under room temperature.
Zn-Al alloy and Zn-Ni alloy can be formed by adding Al and Ni in the plating solution in the present invention, so as to pass through Zn-
Al can effectively improve the finish of product surface, corrosion-resistant, the effectively generation of reduction zinc gray, cadmia situation；Meanwhile pass through Zn-
Ni alloys can effectively suppress the formation of super thick zinc layers, and then effectively improve the adhesive force of zinc layers on the surface of the workpiece, zinc-plated completion
Uniformity afterwards, can also reduce the generation of dull gray coating, effectively reduce aberration, and zinc-plated effect is good, and product quality is high, hot-dip effect
Rate is high；Secondly, first it is about to workpiece before hot-dip to be reacted with quickening liquid, activates workpiece surface, improves zinc liquid wetting work
The ability of part, increases Zinc attachability；So as to reduce the zinc coating thickness of outer surface of workpiece, improve workpiece quality, increase yield,
So as to effectively reduce cost；Meanwhile quickening liquid, when can also prevent from spontaneously drying or drying, the surface of workpiece is aoxidized；Secondly also
The zinc oxide film that galvanizing zinc is attached to metal surface can be decomposed, shortens the immersion plating time, increases production capacity, further improves effect
Rate.
Further, the degreaser by degreasing agent and water with 1:20 ratio is mixed to prepare；The degreasing agent is by weight
The component of part proportioning is formed：10-20 parts of sodium carbonate, 2.5-4.5 parts of surfactant, 4-6 parts of tertiary sodium phosphate；Aforementioned proportion mixes
Obtained degreaser degreasing effect is notable, and the degreasing rate of workpiece surface can reach 92-95%, and the basic without grease of workpiece surface remains,
Effectively improve the zinc layers adhesive rate of workpiece.
Further, the quickening liquid is made of the component of weight：1-2 parts of liquor zinci chloridi, ammonium chloride solution
3-5 parts, 10-20 parts of water.
Further, the mass concentration of the liquor zinci chloridi is 80-120g/l, the mass concentration of the ammonium chloride solution
For 220-260g/l；The total capacity of the liquor zinci chloridi and ammonium chloride solution in quickening liquid is no more than 350g/l；Work as chlorination
It is poor for the removal effect of workpiece surface oxide when the mass concentration of zinc solution is less than 80g/l, the zinc of later stage workpiece surface
Layer adhesive rate is poor；And when the mass concentration of liquor zinci chloridi is higher than 120g/l, and excessive corrosion can be caused to workpiece, influence
The intensity of workpiece；Likewise, when the mass concentration of ammonium chloride solution is less than 220g/l, solution is gone for workpiece surface oxide
Except effect is poor, the zinc layers adhesive rate of later stage workpiece surface is poor；And when the mass concentration of ammonium chloride solution is less than 260g/l,
The corrosivity of solution is excessive, be easy to cause the excessive erosion of workpiece surface, not only influences zinc layers adhesive rate, while will also weaken work
The hardness of part, influences workpiece service life；And when both solution mixes and concentration is more than 350g/l, workpiece will be corroded；
Above-mentioned data are the preferred plan obtained after being verified by many experiments.
Further, the first heating that the hothouse includes the air inlet pipe arranged on hothouse bottom, connected with air inlet pipe
Room, the second heating chamber and the air outlet pipe arranged on hothouse top；Pass through separation between first heating chamber and the second heating chamber
Part separates, and multiple ventholes are intervally distributed with separator；When dry, workpiece enters to the second heating chamber, and gas is by air inlet pipe
Into the first heating chamber, venthole slows down the speed that gas is entered the second heating chamber by the first heating chamber, and gas is in the first heating
Indoor fully heating；The second heating chamber is entered to afterwards to heat workpiece；By the setting of separator, effectively slow down hot gas
The indoor speed of second heating is entered to by the first heating chamber, so as to ensure that gas can fully be added in the first heating chamber
Heat, prevents gas temperature from not enough not reaching good drying effect.
Further, the air outlet pipe is connected by a recycling pipe fitting with the air inlet pipe, the air inlet pipe and the outlet
Pipe junction is equipped with condensing unit；Hot gas by hothouse discharge is recycled to air inlet pipe by recycling pipe fitting, in removal process,
Vapor in gas is removed by condensing unit；Drying gas is recycled by recycling pipe fitting, improves gas profit
With rate；And condensing unit is provided with, effectively the vapor in gas recovery can be removed, ensure the gas dry of recycling, from
And reach good drying effect.
Further, the recycling pipe fitting is at least partly obliquely installed to the junction of itself and air outlet pipe, recycling pipe fitting with
The junction of air outlet pipe is equipped with water drainage part；In condensation process, the vapor in gas condenses into droplet in recycling pipe fitting inner wall
And water drainage part position is flowed downward to along inclined recycling pipe fitting, discharged by water drainage part；Effectively prevent through supercooling
Droplet after solidifying is remained in condensation pipe, further reduces the moisture carried in gas recovery.
Further, the recycling pipe fitting includes the first pipeline and second pipe, described second pipe at least part and institute
State outlet pipe fitting；So as to which second pipe is during gas recovery is conveyed, can exchange heat with air outlet pipe, by air outlet pipe
On temperature absorbed, so as to carry out certain heating treatment to the gas recovery after condensation process, gas recovery exists
By with certain temperature when entering to heating chamber, and then the operating power of heating chamber internal heat generation element can be reduced, reduce energy consumption,
Improve work efficiency.
Further, the outlet pipe is at least partly obliquely installed to the junction of the recycling pipe fitting and air outlet pipe；
So as to which condensed droplet to flowing at discharge outlet and can discharge in time, effectively prevent condensed water from accumulating in the duct.
Further, first inner-walls of duct is equipped with a discharge outlet and the rhone being connected with the discharge outlet；It is described
Water drainage part is connected with the discharge outlet；Water in pipeline can be discharged along rhone, and drainage effect is good, and again
There is water to be deposited in rhone, thus the less water droplet adhered on inner-walls of duct also can by rhone water attract and
It flow in rhone, inner-walls of duct can keep dry state substantially.
Further, the water drainage part includes being arranged on the connection that the first pipeline external surface is connected with the discharge outlet
Chamber, the drainpipe being connected with the connecting cavity, the seal between drainpipe and connecting cavity and arranged on the drainpipe lower part
Unidirectionally controlled part；The diameter of drainpipe is smaller, when gas in pipelines flows, will have small part of gas to rush to drainpipe, when
When the water of accumulation is more in drainpipe, water has had certain gravity, afterwards in conjunction with the impact force of gas after, unidirectionally controlled part
It can be opened, effectively avoid the water-water reactor in drainpipe from accumulating excessive, and without manually supervision, artificial drainage, effectively reduce worker
Workload.
Further, the drainpipe is equipped with guard member, which includes the protection for disconnecting portion and lower part on top
Portion, the internal diameter of the protection portion is equal with the outside diameter of the unidirectionally controlled part, and the portion that disconnects detachably connects with the drainpipe
Connect, the protection portion lower end extends to and the unidirectionally controlled part lower end flush position；Guard member can effectively prevent unidirectionally controlled
Part drops when being subject to gas to impact from drainpipe, extends service life of equipment；And protection portion can be to unidirectionally controlled part and row
The junction of water pipe is compressed, and strengthens leakproofness between the two, effective prevent leakage；Meanwhile protection portion lower part extends to
Unidirectionally controlled part lower surface, can effectively prevent unidirectionally controlled part from being hit and dropping or damage from drainpipe, further prolong
The service life of long equipment；Guard member is detachable, consequently facilitating being replaced to unidirectionally controlled part.
Further, the seal is the sealant arranged on the drainpipe upper end, which divides
It is furnished with multiple storage glue grooves；By the setting for storing glue groove so that sealant when be bonded with connecting cavity, glue can high degree stay
In the presence of storing in glue groove, so that for comparing traditional plane adhesion, adhesive effect is more preferable, has between drainpipe and connecting cavity good
Good leakproofness, is not easy to leak；And the situation for degumming occur is not easy to after long-time service, service life is longer.
In conclusion the present invention has the following advantages：By adding Al and Ni in the plating solution, product surface is effectively improved
It is finish, corrosion-resistant, effectively reduce zinc gray, cadmia situation generation, improve the adhesive force of zinc layers on the surface of the workpiece, it is zinc-plated complete
Uniformity after, can also reduce the generation of dull gray coating, effectively reduce aberration, and zinc-plated effect is good, and product quality is high, hot-dip
It is efficient；Secondly, first it is about to workpiece before hot-dip to be reacted with quickening liquid, activates workpiece surface, increase zinc layers attachment
Power, improves workpiece quality, improves production efficiency.
Brief description of the drawings
Fig. 1 is the structure diagram of the present invention.
Fig. 2 is the partial schematic diagram of Fig. 1.
Embodiment
In order to make those skilled in the art be better understood from the present invention program, below in conjunction with the embodiment of the present invention
Attached drawing, carries out the technical solution in the embodiment of the present invention clear, complete description.
Embodiment 1
As shown in Figure 1, a kind of galvanizing by dipping processing technology, comprises the following steps：（1）Degreasing：Workpiece to be processed is placed in degreasing
Process 20min in liquid, the temperature of degreaser is 80 DEG C during degreasing；Specifically, the degreaser by degreasing agent and water with 1:20
Ratio is mixed to prepare；The degreasing agent is made of the component of weight：10 parts of sodium carbonate, 2.5 parts of surfactant, phosphoric acid
4 parts of trisodium；（2）Pickling：Washing 35min is carried out to workpiece using hydrochloric acid solution, workpiece is rinsed using clear water afterwards, on
The concentration for stating hydrochloric acid solution is 10mol/L；（3）Waste liquid neutralizes：Step（2）The middle current for rinsing workpiece are neutralized to neutralization pond
After reaction, then outwardly discharge, specifically, the solution in neutralization pond is sodium hydroxide solution, and the concentration of sodium hydroxide solution
For 20mol/L；（4）Help plating：Workpiece is placed in 60 DEG C of quickening liquid to the reaction for carrying out 10s；（5）It is dry：Workpiece is inserted dry
In dry room, maintain hothouse to carry out the drying of 1-2min to workpiece at a temperature of 130 DEG C, remove the moisture of workpiece surface；（6）
Hot-dip：Above-mentioned workpiece is incorporated into hot-dip 2min in 440 DEG C of plating solution;Specifically, the preparation method of the plating solution is：
By the Al that component content is 0.006%, component content is 0.008% Ni, is incorporated into molten zinc liquid, reheats into traveling
The melting of one step, is finally made plating solution；（7）Cooling：Workpiece is air-dried using fan under room temperature；Hot-dip and quickening liquid with
The specific reaction of workpiece is the prior art, and claimed the application is not reaction process yet, and so it will not be repeated.
Further, the quickening liquid is made of the component of weight：1 part of liquor zinci chloridi, ammonium chloride solution 3
Part, 10 parts of water；And it is preferable, the mass concentration of the liquor zinci chloridi is 80g/l, and the mass concentration of the ammonium chloride solution is
220g/l；The total capacity of the liquor zinci chloridi and ammonium chloride solution in quickening liquid is no more than 350g/l；Work as liquor zinci chloridi
Mass concentration when being less than 80g/l, the zinc layers attachment of later stage workpiece surface poor for the removal effect of workpiece surface oxide
Rate is poor；When the mass concentration of ammonium chloride solution is less than 220g/l, solution is poor for the removal effect of workpiece surface oxide,
The zinc layers adhesive rate of later stage workpiece surface is poor；And when both solution mixes and concentration is more than 350g/l, workpiece will be rotten
Erosion；Above-mentioned data are the preferred plan obtained after being verified by many experiments.
In order to reach more preferable drying effect, the hothouse 1 is divided into the first heating chamber by us by a separator 6
3 and second heating chamber 4, heater element is respectively equipped with 3 and second heating chamber 4 of the first heating chamber, which is market
On the heating tube that is directly commercially available, repeat no more；Separator 6 can be made of metal material, preferably stainless steel, separator
It is above evenly spaced that multiple ventholes 61 are distributed with so that the gas of the first heating chamber energy can enter to second by venthole
In heating chamber；Hothouse bottom connects an air inlet pipe 2,2 one end of air inlet pipe connection air blower, the other end and 3 phase of the first heating chamber
Connection, hothouse top are equipped with an air outlet pipe 5, which is connected with the second heating chamber 4；When dry, workpiece enters to the
In two heating chambers 4, gas is entered in the first heating chamber 3, then the first heating chamber by air inlet pipe tentatively to be heated, and venthole 61 subtracts
Slow gas is entered the speed of the second heating chamber by the first heating chamber, and gas fully heats in the first heating chamber 3；Enter to afterwards
Second heating chamber 4, after the heater element heating in the second heating chamber 4, dries workpiece, good drying effect.
Further, the air outlet pipe 5 is connected by a recycling pipe fitting 8 with the air inlet pipe 2, and the air inlet pipe 2 and institute
State 5 junction of air outlet pipe and be equipped with condensing unit 51, the condensing unit 51 includes housing and the condenser pipe in housing, condensation
Pipe can be directly buying obtains on the market, and so it will not be repeated；By hothouse discharge hot gas by recycle pipe fitting 8 be recycled into
Tracheae, in removal process, passes through condensing unit 51 and removes vapor in gas；As preference, the recycling pipe fitting 8 is located at
In the housing of condensing unit and close to the part of housing, it is obliquely installed to recycling pipe fitting 8 and the junction of air outlet pipe 5, institute
State outlet pipe 5 to be located in the housing of condensing unit and close to the part of housing, also to the recycling pipe fitting 8 and air outlet pipe 5
Junction be obliquely installed；Recycling pipe fitting 8 and the junction of air outlet pipe 5 are equipped with water drainage part；In condensation process, the water in gas
Steam condenses into droplet in recycling 8 inner wall of pipe fitting and flows downward to water drainage part position along inclined recycling pipe fitting 8, by arranging
Wet part discharges；Preferably, the recycling pipe fitting includes the first pipeline 81 and second pipe 82, the first pipeline 81 is with going out
Feed channel 5 is connected, and second pipe 82 is connected with the first pipeline 81, and 82 at least part of second pipe is pasted with the outlet pipe 5
Close, so as to be absorbed to the heat of outlet pipe 5.
In order to facilitate draining, we are provided with a discharge outlet 811 and a rhone 812 in 81 inner wall of the first pipeline,
And the rhone 812 is connected with the discharge outlet, the water drainage part is connected with the discharge outlet 811, so that the first pipeline
The water of 81 inner walls is discharged after can flowing to discharge outlet along rhone finally by water drainage part；Specifically, the water drainage part bag
Connecting cavity 91, drainpipe 92, seal 93 and unidirectionally controlled part 94 are included, the connecting cavity 91 is arranged on 81 outer surface of the first pipeline,
And be connected with the discharge outlet, preferably directed out and extended to form by discharge outlet side wall；The drainpipe 92 is connected with this
Chamber is connected, and is preferably threadedly coupled, easy to repair；The seal 93 is arranged between drainpipe and connecting cavity, is preferably bonded
On drainpipe upper surface, specifically, sealant 931 of the seal 93 for an annular, the sealant are made of rubber；It is and excellent
Choosing, which is intervally distributed with multiple storage glue grooves 932；The unidirectionally controlled part 94 is directly purchase on the market
Check valve made of the rubber bought, the unidirectionally controlled part 94 are sheathed on the drainpipe lower part.
Preferably, the drainpipe 92 is equipped with guard member 95, which is the metallic sheath made of stainless steel,
It includes the protection portion 952 for disconnecting portion 951 and lower part on top, disconnects 951 inner wall of portion and is equipped with internal thread, can be with 92 spiral shell of drainpipe
Line connects, and realization is detachably connected with drainpipe 92；Preferably, the internal diameter s of the protection portion 952 with it is described unidirectionally controlled
The outside diameter of part 94 is equal, and the lower end of the protection portion 95 extends to the position concordant with unidirectionally controlled 94 lower end of part.
Embodiment 2
A kind of galvanizing by dipping processing technology, comprises the following steps：（1）Degreasing：Workpiece to be processed is placed in degreaser and is processed
30min, the temperature of degreaser is 85 DEG C during degreasing；Specifically, the degreaser by degreasing agent and water with 1:20 ratio mixing
It is made；The degreasing agent is made of the component of weight：20 parts of sodium carbonate, 4.5 parts of surfactant, 6 parts of tertiary sodium phosphate；
（2）Pickling：Washing 40min is carried out to workpiece using hydrochloric acid solution, workpiece is rinsed using clear water afterwards, above-mentioned hydrochloric acid is molten
The concentration of liquid is 10mol/L；（3）Waste liquid neutralizes：Step（2）After the middle current for rinsing workpiece carry out neutralization reaction to neutralization pond,
Outwardly discharge again, specifically, the solution in neutralization pond is sodium hydroxide solution, and the concentration of sodium hydroxide solution is 20mol/
L；（4）Help plating：Workpiece is placed in 80 DEG C of quickening liquid to the reaction for carrying out 12s；（5）It is dry：Workpiece is inserted in hothouse, is tieed up
The drying that hothouse carries out workpiece at a temperature of 140 DEG C 2min is held, removes the moisture of workpiece surface；（6）Hot-dip：Will be upper
State workpiece and be incorporated into hot-dip 4min in 460 DEG C of plating solution;Specifically, the preparation method of the plating solution is：It is by component content
0.008% Al, component content are 0.01% Ni, are incorporated into molten zinc liquid, and reheating is further melted, most
Plating solution is made afterwards；（7）Cooling：Workpiece is air-dried using fan under room temperature；Hot-dip and quickening liquid and workpiece it is specific anti-
Should be the prior art, claimed the application is not reaction process yet, and so it will not be repeated.
Further, the quickening liquid is made of the component of weight：2 parts of liquor zinci chloridi, ammonium chloride solution 5
Part, 20 parts of water；And it is preferable, the mass concentration of the liquor zinci chloridi is 120g/l, the mass concentration of the ammonium chloride solution
For 260g/l；The total capacity of the liquor zinci chloridi and ammonium chloride solution in quickening liquid is no more than 350g/l；When zinc chloride is molten
When the mass concentration of liquid is higher than 120g/l, excessive corrosion can be caused to workpiece, influence the intensity of workpiece；When the matter of ammonium chloride solution
When amount concentration is higher than 260g/l, the corrosivity of solution is excessive, be easy to cause the excessive erosion of workpiece surface, and it is attached not only to influence zinc layers
Rate, while will also weaken the hardness of workpiece, influences workpiece service life；And when both solution mixing and concentration exceed
During 350g/l, workpiece will be corroded；Above-mentioned data are the preferred plan obtained after being verified by many experiments.
Other structures are same as Example 1, repeat no more.
Embodiment 3
A kind of galvanizing by dipping processing technology, comprises the following steps：（1）Degreasing：Workpiece to be processed is placed in degreaser and is processed
25min, the temperature of degreaser is 85 DEG C during degreasing；Specifically, the degreaser by degreasing agent and water with 1:20 ratio mixing
It is made；The degreasing agent is made of the component of weight：20 parts of sodium carbonate, 3 parts of surfactant, 5 parts of tertiary sodium phosphate；
（2）Pickling：Washing 40min is carried out to workpiece using hydrochloric acid solution, workpiece is rinsed using clear water afterwards, above-mentioned hydrochloric acid is molten
The concentration of liquid is 10mol/L；（3）Waste liquid neutralizes：Step（2）After the middle current for rinsing workpiece carry out neutralization reaction to neutralization pond,
Outwardly discharge again, specifically, the solution in neutralization pond is sodium hydroxide solution, and the concentration of sodium hydroxide solution is 20mol/
L；（4）Help plating：Workpiece is placed in 80 DEG C of quickening liquid to the reaction for carrying out 12s；（5）It is dry：Workpiece is inserted in hothouse, is tieed up
The drying that hothouse carries out workpiece at a temperature of 140 DEG C 2min is held, removes the moisture of workpiece surface；（6）Hot-dip：Will be upper
State workpiece and be incorporated into hot-dip 4min in 460 DEG C of plating solution;Specifically, the preparation method of the plating solution is：It is by component content
0.008% Al, component content are 0.01% Ni, are incorporated into molten zinc liquid, and reheating is further melted, most
Plating solution is made afterwards；（7）Cooling：Workpiece is air-dried using fan under room temperature；Hot-dip and quickening liquid and workpiece it is specific anti-
Should be the prior art, claimed the application is not reaction process yet, and so it will not be repeated.
Further, the quickening liquid is made of the component of weight：2 parts of liquor zinci chloridi, ammonium chloride solution 4
Part, 15 parts of water；And it is preferable, the mass concentration of the liquor zinci chloridi is 100g/l, the mass concentration of the ammonium chloride solution
For 240g/l；The total capacity of the liquor zinci chloridi and ammonium chloride solution in quickening liquid is 320g/l；When liquor zinci chloridi
It is poor for the removal effect of workpiece surface oxide when mass concentration is less than 100g/l, the zinc layers attachment of later stage workpiece surface
Rate is poor；And when the mass concentration of liquor zinci chloridi is higher than 100g/l, and excessive corrosion can be caused to workpiece, influence workpiece
Intensity；Likewise, when the mass concentration of ammonium chloride solution is less than 100g/l, removal effect of the solution for workpiece surface oxide
Poor, the zinc layers adhesive rate of later stage workpiece surface is poor；And when the mass concentration of ammonium chloride solution is higher than 100g/l, solution
Corrosivity is excessive, be easy to cause the excessive erosion of workpiece surface, not only influences zinc layers adhesive rate, while will also weaken the hard of workpiece
Degree, influences workpiece service life；And when both solution mixes and concentration is more than 320g/l, workpiece will be corroded；Work as chlorination
The mass concentration of zinc solution is 100g/l, and the mass concentration of the ammonium chloride solution is 240g/l；The liquor zinci chloridi and chlorine
It is 320g/l to change total capacity of the ammonium salt solution in quickening liquid, and the adhesive force of zinc layers reaches highest, and above-mentioned data are by repeatedly real
The preferred plan obtained after verification.
Other structures are same as Example 1, and so it will not be repeated.
Obviously, described embodiment is only the part of the embodiment of the present invention, instead of all the embodiments.It is based on
Embodiment in the present invention, those of ordinary skill in the art are obtained every other without making creative work
Embodiment, should all belong to the scope of protection of the invention.
Claims (8)
1. a kind of galvanizing by dipping processing technology, comprises the following steps：
Degreasing：Workpiece to be processed is placed in degreaser and processes 20-30min, the temperature of degreaser is 80-85 DEG C；
Pickling：Washing 35-40min is carried out to workpiece using hydrochloric acid solution, workpiece is rinsed using clear water afterwards；
Waste liquid neutralizes：Step（2）After the middle current for rinsing workpiece carry out neutralization reaction to neutralization pond, then outwardly discharge；
Help plating：Workpiece is placed in 60-80 DEG C of quickening liquid and carries out the reaction of 10-12s；
It is dry：Workpiece carries out the drying of 1-2min in 130-140 DEG C of hothouse, removes the moisture of workpiece surface；
Hot-dip：Above-mentioned workpiece is incorporated into hot-dip 2-4min in 440-460 DEG C of plating solution；The preparation method of the plating solution
For：Al 0.006% ~ 0.008%, Ni 0.008% ~ 0.01% are incorporated into molten zinc liquid, then are melted, plating is made
Liquid;
Cooling：Workpiece is air-dried using fan under room temperature.
2. galvanizing by dipping processing technology according to claim 1, it is characterised in that：The degreaser by degreasing agent and water with
1:20 ratio is mixed to prepare；The degreasing agent is made of the component of weight：10-20 parts of sodium carbonate, surfactant
2.5-4.5 4-6 parts of part, tertiary sodium phosphate.
3. galvanizing by dipping processing technology according to claim 1, it is characterised in that：The quickening liquid is by weight
Component is formed：1-2 parts of liquor zinci chloridi, 3-5 parts of ammonium chloride solution, 10-20 parts of water.
4. galvanizing by dipping processing technology according to claim 1, it is characterised in that：The mass concentration of the liquor zinci chloridi
For 80-120g/l, the mass concentration of the ammonium chloride solution is 220-260g/l；The liquor zinci chloridi and ammonium chloride solution exist
Total capacity in quickening liquid is no more than 350g/l.
5. galvanizing by dipping processing technology according to claim 1, it is characterised in that：The hothouse（1）Including arranged on dry
The air inlet pipe of dry room bottom（2）, the first heating chamber for connecting with air inlet pipe（3）, the second heating chamber（4）And arranged on hothouse top
Air outlet pipe（5）；First heating chamber（3）With the second heating chamber（4）Between pass through separator（6）Separate, separator（6）On
It is intervally distributed with multiple ventholes（61）；When dry, workpiece enters to the second heating chamber（4）, gas by air inlet pipe enter first
Heating chamber（3）, venthole（61）Slow down the speed that gas is entered the second heating chamber by the first heating chamber, gas is in the first heating chamber
（3）Interior fully heating；The second heating chamber is entered to afterwards（4）Workpiece is heated.
6. galvanizing by dipping processing technology according to claim 5, it is characterised in that：The air outlet pipe（5）Pass through a recycling
Pipe fitting（8）With the air inlet pipe（2）It is connected, the air inlet pipe（2）With the air outlet pipe（5）Junction is equipped with condensing unit（51）；
Hot gas by hothouse discharge is by recycling pipe fitting（8）It is recycled to air inlet pipe, in removal process, passes through condensing unit（51）Go
Except the vapor in gas.
7. galvanizing by dipping processing technology according to claim 6, it is characterised in that：The recycling pipe fitting（8）At least partly
To itself and air outlet pipe（5）Junction be obliquely installed, recycle pipe fitting（8）With air outlet pipe（5）Junction be equipped with water drainage part；It is cold
During solidifying, the vapor in gas is in recycling pipe fitting（8）Inner wall condenses into droplet and along inclined recycling pipe fitting（8）Downwards
Water drainage part position is flowed to, is discharged by water drainage part.
8. galvanizing by dipping processing technology according to claim 6, it is characterised in that：The recycling pipe fitting includes the first pipeline
（81）And second pipe（82）, the second pipe（82）At least part and the outlet pipe（5）Fitting.
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| CN201710955584.1A CN107937854A (en) | 2017-10-14 | 2017-10-14 | A kind of galvanizing by dipping processing technology |
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| CN201710955584.1A CN107937854A (en) | 2017-10-14 | 2017-10-14 | A kind of galvanizing by dipping processing technology |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116987995A (en) * | 2023-09-27 | 2023-11-03 | 江苏嘉轩智能工业科技股份有限公司 | Corrosion prevention technology for water cooling channel of permanent magnet direct-drive roller |
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| CN101280401A (en) * | 2008-05-29 | 2008-10-08 | 上海永丰热镀锌有限公司 | Hot-dip galvanizing method for steel products |
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Application publication date: 20180420 |