CN107893246A - A kind of low lead Tinplate Production method - Google Patents
A kind of low lead Tinplate Production method Download PDFInfo
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- CN107893246A CN107893246A CN201710998400.XA CN201710998400A CN107893246A CN 107893246 A CN107893246 A CN 107893246A CN 201710998400 A CN201710998400 A CN 201710998400A CN 107893246 A CN107893246 A CN 107893246A
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- C—CHEMISTRY; METALLURGY
- C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
- C25D—PROCESSES FOR THE ELECTROLYTIC OR ELECTROPHORETIC PRODUCTION OF COATINGS; ELECTROFORMING; APPARATUS THEREFOR
- C25D3/00—Electroplating: Baths therefor
- C25D3/02—Electroplating: Baths therefor from solutions
- C25D3/30—Electroplating: Baths therefor from solutions of tin
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- C—CHEMISTRY; METALLURGY
- C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
- C25D—PROCESSES FOR THE ELECTROLYTIC OR ELECTROPHORETIC PRODUCTION OF COATINGS; ELECTROFORMING; APPARATUS THEREFOR
- C25D5/00—Electroplating characterised by the process; Pretreatment or after-treatment of workpieces
- C25D5/34—Pretreatment of metallic surfaces to be electroplated
- C25D5/36—Pretreatment of metallic surfaces to be electroplated of iron or steel
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- C—CHEMISTRY; METALLURGY
- C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
- C25D—PROCESSES FOR THE ELECTROLYTIC OR ELECTROPHORETIC PRODUCTION OF COATINGS; ELECTROFORMING; APPARATUS THEREFOR
- C25D5/00—Electroplating characterised by the process; Pretreatment or after-treatment of workpieces
- C25D5/48—After-treatment of electroplated surfaces
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Abstract
The invention discloses a kind of low lead Tinplate Production method, including following processing step is carried out successively to steel plate：Degreasing section：Degreasing is carried out to steel plate by alkali hydro-peening and electrolytic alkaline cleaning；Pickling section：Chemical pickling is carried out to the steel plate after degreasing by Acidwash solution, wherein, pickling time t >=0.8s, Acidwash solution is the 70g/L of concentration 40 sulfuric acid solution, the Pb in Acidwash solution2+≤ 20mg/L, the Fe in Acidwash solution2+≤15g/L；Pre-galvanized section：Pre-galvanized processing is carried out to the steel plate after pickling by pre-galvanized solution；Electroplate section：Electroplating processes are carried out to the steel plate after pre-galvanized using the pyrovinic acid system tin plating electrolyte of soluble tin anode, Pb in plating solution2+≤ 10mg/L, lead content≤100mg/kg of soluble tin anode；To the steel plate after plating successively by soft heat section, passivation section, heated-air drying；Oil surface is carried out to dried steel plate using electrostatic oiler.By The present invention reduces the lead tolerance of tin plate, and it is easy to operate in production process.
Description
Technical field
The present invention relates to Tinplate Production field, more particularly to a kind of low lead Tinplate Production method.
Background technology
Tin plate has the characteristics that attractive in appearance, nontoxic, corrosion resistance, is widely used in the packaging row such as food, beverage, chemical industry
Industry, the whole world is annual to be up to 13,000,000 tons using tin plate amount.As food industry is to the more and more higher of packaging material environmental requirement,
Requirement of the tin plate downstream client to lead content in tin plate coating is more and more stricter, EU criteria " EN-10333-2005- bags
Regulation is used in the flat steel product tin-coated steels (tinplate) of dress steel and humans and animals consumption food, product or beverage contact "
Lead content is less than 0.01% in tin-plated product, and chromium content is less than 0.01%, and arsenic content is less than 0.03%.
By electroplate liquid except lead device can effectively remove lead ion in electroplate liquid, but due to the reaction need it is certain
Sedimentation time, the lead ion in high-speed and continuous production process in plating solution can not be reacted in time, be plated in the continuous production later stage
Lead content is gradually increasing in liquid, can not meet tin plate sheet surface lead content requirement.Handled by lead ion in acid electroplating tin liquor
Method, low lead content tin plate can be obtained, but this method uses barium hydroxide as precipitating reagent, and barium hydroxide is a kind of acute
Noxious material, this method be not easy to operate.
The content of the invention
The embodiment of the present invention is by providing a kind of low lead Tinplate Production method, the production process for solving low lead tin plate
Not easy to operate and tin plate lead tolerance technical problem not up to standard.
A kind of production method of low lead tin plate provided in an embodiment of the present invention, following technique step is carried out to rolling rear steel plate
Suddenly：
Degreasing section：Rear steel plate progress ungrease treatment is rolled to described by alkali hydro-peening and electrolytic alkaline cleaning；
Pickling section：Chemical pickling is carried out to the steel plate after degreasing by Acidwash solution, wherein, pickling time t >=0.8s,
The Acidwash solution is concentration 40-70g/L sulfuric acid solution, the Pb in the Acidwash solution2+≤ 20mg/L, the pickling are molten
Fe in liquid2+≤15g/L；
Pre-galvanized section：Pre-galvanized processing is carried out to the steel plate after pickling by pre-galvanized solution；
Electroplate section：The steel plate after pre-galvanized is carried out at plating using the pyrovinic acid system tin plating electrolyte of soluble tin anode
Reason, wherein, Pb in the pyrovinic acid system tin plating electrolyte2+≤ 10mg/L, lead content≤100mg/ of the soluble tin anode
kg；
To the steel plate after plating successively by soft heat section, passivation section, heated-air drying；
Oil surface is carried out to dried steel plate.
Optionally, the concentration of alkali lye used in the alkali hydro-peening is 30-50g/L, and temperature is 70-90 DEG C；
The concentration of alkali lye used in the electrolytic alkaline cleaning is 30-50g/L, and temperature is 70-90 DEG C, wherein, the electrolytic alkaline cleaning
Current density used is 18-25A/dm2。
Optionally, the pre-galvanized solution is specially concentration 2-8g/L pyrovinic acid solution or concentration 2-8g/L sulphur
Acid solution, wherein, the Fe in the pre-galvanized solution2+≤2g/L。
Optionally, the pyrovinic acid system tin plating electrolyte includes following component：Pb2+≤ 10mg/L, Sn2+： 15-22g/
L, additive 45-70ml/L, free acid：45-70ml/L, antioxidant 20-28ml/L.
Optionally, the starting electroplating current density of the plating section is 10-15A/dm2, follow-up electroplating current density is 10-
30A/dm2。
Low lead Tinplate Production method as claimed in claim 1, it is characterised in that the reflowing temperature of the soft heat section is
260 DEG C -310 DEG C, soft heat is highly 4200mm-7000mm, and steel plate after soft heat is carried out at hardening in 70-90 DEG C of desalted water
Reason.
Optionally, the processing step of the passivation section includes：
It it is 42-44 DEG C by temperature, concentration 22-35g/L, the sodium dichromate solution that pH is 4.0-4.5 is passivated place
Reason, wherein, the passive current density 0.5-5As/dm in passivating process2。
Optionally, it is described that oil surface is carried out to dried steel plate, be specially：
Oil surface, oiling thickness 2-8mg/m are carried out to dried steel plate using electrostatic oiler2。
Optionally, the temperature of the heated-air drying is 100-130 DEG C.
The one or more technical schemes provided in the embodiment of the present invention, have at least the following technical effects or advantages：
The embodiment of the present invention is by controlling the pickling time, lead content and Fe of pickling section2+, and in plating section using solvable
Property tin anode pyrovinic acid system tin plating electrolyte control the lead of tin plating electrolyte when carrying out electroplating processes to the steel plate after pre-galvanized and contain
Measure Pb2+≤ 10mg/L, lead content≤100mg/kg of soluble tin anode, so that the lead content in tin plating electrolyte is relatively low, to reduce
Lead tolerance in the tin plate of finished product.And due to not handled by noxious material, therefore be easy to operate in production process.
Brief description of the drawings
In order to illustrate more clearly about the embodiment of the present invention or technical scheme of the prior art, below will be to embodiment or existing
There is the required accompanying drawing used in technology description to be briefly described, it should be apparent that, drawings in the following description are only this
The embodiment of invention, for those of ordinary skill in the art, on the premise of not paying creative work, can also basis
The accompanying drawing of offer obtains other accompanying drawings.
Fig. 1 is the process chart of the production method of low lead tin plate in the embodiment of the present invention；
Fig. 2 is the lead content change curve in the tin plating electrolyte of the embodiment of the present invention.
Embodiment
The embodiment of the present invention provides a kind of low lead Tinplate Production method, and the production process for solving low lead tin plate is not easy
Operation and tin plate lead tolerance technical problem not up to standard, general thought are as follows：
By the embodiment of the present invention by controlling the pickling time, lead content and Fe of pickling section2+, and in plating section use
The pyrovinic acid system tin plating electrolyte of soluble tin anode controls tin plating electrolyte when carrying out electroplating processes to the steel plate after pre-galvanized
Lead content Pb2+≤ 10mg/L, the mg/kg of the lead content of soluble tin anode≤100, so that the lead content in tin plating electrolyte is relatively low, with
Reduce lead tolerance in the tin plate of finished product.And due to not handled by noxious material, therefore be easy in production process
Operation.
To make the purpose, technical scheme and advantage of the embodiment of the present invention clearer, below in conjunction with the embodiment of the present invention
In accompanying drawing, the technical scheme in the embodiment of the present invention is clearly and completely described, it is clear that described embodiment is
Part of the embodiment of the present invention, rather than whole embodiments.Based on the embodiment in the present invention, those of ordinary skill in the art
The every other embodiment obtained under the premise of creative work is not made, belongs to the scope of protection of the invention.
With reference to shown in figure 1, the embodiment of the present invention provides a kind of production method of low lead tin plate, including enters to rolling rear steel plate
The following processing step of row：Degreasing section, pre-galvanized section, plating section, soft heat section, passivation section, heated-air drying, oiling.
Each step is described in detail separately below：
S1, degreasing section：Ungrease treatment is carried out to rolling rear steel plate by alkali hydro-peening and electrolytic alkaline cleaning.
In specific implementation process, alkali hydro-peening is first carried out to rolling rear steel plate, then carry out electrolytic alkaline cleaning.
Specifically, the concentration of alkali lye used in alkali hydro-peening is 30-50g/L, temperature is 70-90 DEG C.For example, alkali hydro-peening institute
Can be one kind in 30g/L, 35g/L, 40g/L, 45g/L, 50g/L with alkali lye, the temperature of alkali hydro-peening is 70 DEG C, 75 DEG C, 80
℃、85℃、90℃。
Specifically, the concentration of alkali lye used in electrolytic alkaline cleaning is 30-50g/L, temperature is 70-90 DEG C.Wherein, electrolytic alkaline cleaning institute
Current density is 18-25A/dm2.For example, alkali lye used in electrolytic alkali can be 30g/L, 35g/L, 40g/L, 45g/
L, one kind in 50g/L, the temperature of electrolytic alkaline cleaning is 70 DEG C, 75 DEG C, 80 DEG C, 85 DEG C, 90 DEG C.Electric current used in electrolytic alkaline cleaning
Density is 18A/ dm2、19A/ dm2、20A/ dm2、 21A/ dm2、22A/ dm2、23A/ dm2、24A/ dm2、25A/ dm2。
S2, pickling section：Chemical pickling is carried out to the steel plate after degreasing by Acidwash solution, wherein, pickling time t >=
0.8s, Acidwash solution are concentration 40-70g/L sulfuric acid solution, the lead (II) ion Pb in Acidwash solution2+≤ 20mg/L, divalence
Iron ion Fe2+≤15g/L。
Specifically, the concentration of sulfuric acid solution used in pickling section can be 40g/L, 45g/L, 50g/L, 55g/L, 60g/L,
65g/L、70g/L.Pickling time can be 0.8s, 0.9s, 1s, 2s, 3s, 4s, 5s etc..
Specifically, Pb in Acidwash solution2+Concentration can be 20mg/L, 19mg/L, 18mg/L, 17mg/L, 16mg/L,
15mg/L、14mg/L、13mg/L、12mg/L、11mg/L、10mg/L、9mg/L、8mg/L、 7mg/L、6mg/L、5mg/L、4mg/
L, one kind in 3mg/L, 2mg/L, 1mg/L.
Specifically, Fe in Acidwash solution2+Concentration can be 15g/L, 14g/L, 13g/L, 12g/L, 11g/L, 10g/L,
One kind in 9g/L, 8g/L, 7g/L, 6g/L, 5g/L, 4g/L, 3g/L, 2g/L, 1g/L.
S3, pre-galvanized section：Pre-galvanized processing is carried out to the steel plate after pickling by pre-galvanized solution.
Specifically, pre-galvanized solution be specially concentration 2-8g/L pyrovinic acid solution or concentration 2-8g/L sulfuric acid it is molten
Liquid, the ferrous ion Fe in pre-galvanized solution2+≤2g/L。
Specifically, the ferrous ion Fe in pre-galvanized solution2+Can be 2g/L, 1.9g/L, 1.8g/L, 1.7g/L,
1.6g/L、1.5g/L、1.4g/L、1.3g/L、1.2g/L、1.1g/L、1.0g/L、0.8g/L、0.7g/L、 0.6g/L、0.5g/
L, one kind in 0.4g/L, 0.3g/L, 0.2g/L, 0.1g/L.
In specific implementation process, pre-galvanized solution can be 2g/L or 3g/L or 4g/L or 5g/L or
6g/L or 7g/L or 8g/L pyrovinic acid solution.Pre-galvanized solution can also be 2g/L or 3g/L or 4g/
L or 5g/L or 6g/L or 7g/L or 8g/L sulfuric acid solution.
S4, plating section：Electricity is carried out to the steel plate after pre-galvanized using the pyrovinic acid system tin plating electrolyte of soluble tin anode
Plating, wherein, Pb in pyrovinic acid system tin plating electrolyte2+≤ 10mg/L, lead content≤100mg/kg of soluble tin anode.
Specifically, the steel plate after pre-galvanized is electroplated by soluble tin anode and pyrovinic acid system tin plating electrolyte,
The metal ingredient being consumed in pyrovinic acid system tin plating electrolyte can be continuously replenished.
Specifically, pyrovinic acid system tin plating electrolyte meaning used is MSA (pyrovinic acid) system tin plating electrolyte, soluble tin sun
In pole insertion tin plating electrolyte, soluble tin anode is that can dissolve the anode for generating metal ion, the soluble tin sun in the present embodiment
Pole can be dissolved in tin plating electrolyte in the presence of electric current, to maintain tin ion concentration in tin plating electrolyte.
It should be noted that MSA (pyrovinic acid) system tin plating electrolyte used includes following component：Lead (II) ion Pb2+
≤ 10mg/L, divalent tin ion Sn2+：15-22g/L, additive 45-70ml/L, free acid：45-70ml/L, antioxidant 20-
28ml/L.The lead content of soluble tin anode is less than 100mg/kg tin anode.
In one embodiment, the starting electroplating current density for electroplating section is 10-15A/dm2, follow-up electroplating current density is
10-30A/dm2.It should be noted that passage when initial current density just has started to electroplate for strip in coating bath, subsequent current
Density be except just start plating when passage in addition to follow-up all plating passages.In another embodiment, follow-up electroplating current is close
Degree is 10-15A/dm with starting electroplating current density2。
For example, it can be 10A/dm to originate electroplating current density2、11A/dm2、12A/dm2、13A/dm2、14A/dm2、
15A/dm2.Follow-up electroplating current density can be 10A/dm2、11A/dm2、 12A/dm2、13A/dm2、14A/dm2、15A/dm2、
16A/dm2、17A/dm2、18A/dm2、19A/dm2、 20A/dm2、21A/dm2、22A/dm2、23A/dm2、24A/dm2、25A/
dm2、26A/dm2、27A/dm2、 28A/dm2、29A/dm2、30A/dm2In one kind.
S5, pass through soft heat section, passivation section, heated-air drying successively to the steel plate after plating.
Specifically, the reflowing temperature of soft heat section is 260 DEG C -310 DEG C, soft heat is highly 4200mm-7000mm, after soft heat
Steel plate carries out hardening processing in 70-90 DEG C of desalted water.
The heating of soft heat section is specially sensing heating, to be heated to more than the fusing point of tin, makes tin layers refuse.Again melt
Hardening processing is carried out after change in 70-90 DEG C of desalted water, to obtain bright tin plating layer surface.
In a preferred embodiment, reflowing temperature control is at 275 DEG C -295 DEG C, so as to further reduce the heat of steel plate
Total load.
It should be noted that soft heat is highly 4200mm-7000mm, specific meaning is between induction reflow case and watch-quench tank
Distance be 4200mm-7000mm.Can be 4200mm, 5000mm, 6000mm, 7000mm in specific implementation process.
Specifically, the processing step of passivation section includes：It it is 42-44 DEG C by temperature, concentration 22-35g/L, pH are
4.0-4.5 sodium dichromate solution is passivated processing, and passivation technology is electrolytic passivation：311 passivation, wherein, it is passivated
Passive current density 0.5-5As/dm in journey2。
By Passivation Treatment with prevent the burn into of tin plate improve coating and steel plate in itself between adhesion.
Specifically, the temperature of heated-air drying is 100-130 DEG C.Preferably, heated-air drying temperature is 120-130 DEG C, can
Obtain the drying effect of preferably tin plating rear steel plate.
S6, oil surface is carried out to dried steel plate.
Specifically, oil surface, oiling thickness 2-8mg/m are carried out to dried steel plate using electrostatic oiler2。
Specifically, grease used can be dioctyl decanedioic acid fat or acetyl tributyl citrate.
The low lead Tinplate Production method provided by above-described embodiment, control pickling time, the lead content of pickling section
And Fe2+, and it is electric to the steel plate progress after pre-galvanized using the pyrovinic acid system tin plating electrolyte of soluble tin anode in plating section
The lead content Pb of tin plating electrolyte is controlled during plating2+≤ 10mg/L, lead content≤100mg/kg of soluble tin anode, so that plating
Lead content in tin liquor is relatively low, to reduce lead tolerance in the tin plate of finished product.And due to not passing through at noxious material
Reason, therefore be easy to operate in production process.
The low lead Tinplate Production method provided based on above-described embodiment, in tin plating producing line continuous flow procedure, reference
Shown in Fig. 2, the control that lead content is stablized in plating solution meets the Pb in tin plating electrolyte between 2-7mg/L2+≤ 10mg/L production will
Ask down, so as in continuous flow procedure, in the coating weight of low tinplating steel sheet, coating lead content and plating solution, lead content is such as
Shown in table 1 below：
Table 1, low tinplating steel sheet
| Sequence number | Coating weight g/m2 | Lead content mg/L in plating solution | Coating lead content mg/kg |
| 1 | 2.2 | 5.0 | 68 |
| 2 | 2.2 | 5.0 | 70 |
| 3 | 1.1 | 3.0 | 31 |
| 4 | 1.1 | 4.0 | 28 |
| 5 | 2.8 | 4.0 | 67 |
| 6 | 2.8 | 4.0 | 35 |
In continuous flow procedure, when the thickness of coating reaches 5.6g/m2When, coating weight, coating lead content and plating
Lead content is as shown in table 2 below in liquid.
The thickness of coating of table 2. is 5.6g/m2Tin plate
| Sequence number | Coating weight g/m2 | Lead content mg/L in plating solution | Coating lead content mg/kg |
| 1 | 5.6 | 3.0 | 47 |
| 2 | 5.6 | 5.0 | 38 |
| 3 | 5.6 | 5.0 | 46 |
| 4 | 5.6 | 3.0 | 34 |
| 5 | 5.6 | 4.0 | 58 |
| 6 | 5.6 | 3.0 | 47 |
In continuous flow procedure, when tin thickness reaches 11.2g/m2When, in coating weight, coating lead content and plating solution
Lead content is as shown in table 3 below.
The thickness of coating of table 3. is 11.2g/m2Tin plate
| Sequence number | Coating weight g/m2 | Lead content mg/L in plating solution | Coating lead content mg/kg |
| 1 | 11.2 | 3.0 | 64 |
| 2 | 11.2 | 4.0 | 64 |
| 3 | 11.2 | 2.0 | 37 |
| 4 | 11.2 | 3.6 | 55 |
| 5 | 11.2 | 2.4 | 50 |
| 6 | 11.2 | 3.0 | 64 |
Although preferred embodiments of the present invention have been described, but those skilled in the art once know basic creation
Property concept, then can make other change and modification to these embodiments.So appended claims be intended to be construed to include it is excellent
Select embodiment and fall into having altered and changing for the scope of the invention.
Obviously, those skilled in the art can carry out the essence of various changes and modification without departing from the present invention to the present invention
God and scope.So, if these modifications and variations of the present invention belong to the scope of the claims in the present invention and its equivalent technologies
Within, then the present invention is also intended to comprising including these changes and modification.
Claims (9)
1. a kind of production method of low lead tin plate, it is characterised in that carry out following processing step to rolling rear steel plate：
Degreasing section：Rear steel plate progress ungrease treatment is rolled to described by alkali hydro-peening and electrolytic alkaline cleaning；
Pickling section：Chemical pickling is carried out to the steel plate after degreasing by Acidwash solution, wherein, pickling time t >=0.8s, the acid
Dilution is concentration 40-70g/L sulfuric acid solution, the Pb in the Acidwash solution2+≤ 20mg/L, in the Acidwash solution
Fe2+≤15g/L；
Pre-galvanized section：Pre-galvanized processing is carried out to the steel plate after pickling by pre-galvanized solution；
Electroplate section：Electroplating processes are carried out to the steel plate after pre-galvanized using the pyrovinic acid system tin plating electrolyte of soluble tin anode,
Wherein, Pb in the pyrovinic acid system tin plating electrolyte2+≤ 10mg/L, lead content≤100mg/kg of the soluble tin anode；
To the steel plate after plating successively by soft heat section, passivation section, heated-air drying；
Oil surface is carried out to dried steel plate.
2. low lead Tinplate Production method as claimed in claim 1, it is characterised in that：
The concentration of alkali lye used in the alkali hydro-peening is 30-50g/L, and temperature is 70-90 DEG C；
The concentration of alkali lye used in the electrolytic alkaline cleaning is 30-50g/L, and temperature is 70-90 DEG C, wherein, used in the electrolytic alkaline cleaning
Current density be 18-25A/dm2。
3. low lead Tinplate Production method as claimed in claim 1, it is characterised in that the pre-galvanized solution is specially concentration
2-8g/L pyrovinic acid solution or concentration 2-8g/L sulfuric acid solution, wherein, the Fe in the pre-galvanized solution2+≤2g/L。
4. low lead Tinplate Production method as claimed in claim 1, it is characterised in that in the pyrovinic acid system tin plating electrolyte
Including following component：Pb2+≤ 10mg/L, Sn2+：15-22g/L, additive 45-70ml/L, free acid：45-70ml/L, antioxygen
Agent 20-28ml/L.
5. low lead Tinplate Production method as claimed in claim 4, it is characterised in that the starting electroplating current of the plating section
Density is 10-15A/dm2, follow-up electroplating current density is 10-30A/dm2。
6. low lead Tinplate Production method as claimed in claim 1, it is characterised in that the reflowing temperature of the soft heat section is
260 DEG C -310 DEG C, soft heat is highly 4200mm-7000mm, and steel plate after soft heat is carried out at hardening in 70-90 DEG C of desalted water
Reason.
7. low lead Tinplate Production method as claimed in claim 1, it is characterised in that the processing step bag of the passivation section
Include：
It is 42-44 DEG C by temperature, concentration 22-35g/L, the sodium dichromate solution that pH is 4.0-4.5 is passivated processing, its
In, the passive current density 0.5-5As/dm in passivating process2。
8. low lead Tinplate Production method as claimed in claim 1, it is characterised in that described that table is carried out to dried steel plate
Face oiling, it is specially：
Oil surface, oiling thickness 2-8mg/m are carried out to dried steel plate using electrostatic oiler2。
9. low lead Tinplate Production method as claimed in claim 1, it is characterised in that the temperature of the heated-air drying is 100-
130℃。
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| CN110284131A (en) * | 2019-06-17 | 2019-09-27 | 首钢集团有限公司 | A kind of low tinplating steel sheet passivation technology |
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| CN113564645A (en) * | 2021-07-13 | 2021-10-29 | 张家港扬子江冷轧板有限公司 | Control method for reducing lead content on surface of tinplate |
| WO2022061948A1 (en) * | 2020-09-28 | 2022-03-31 | 上海梅山钢铁股份有限公司 | Insoluble anode methyl sulfonic acid coating low-lead content tin plate production method and device |
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| CN109023445A (en) * | 2018-08-06 | 2018-12-18 | 首钢集团有限公司 | A kind of preparation method and applications of extremely low tin amount tin plate |
| CN108950613A (en) * | 2018-08-06 | 2018-12-07 | 首钢集团有限公司 | A kind of preparation method of tin plate and the application of thus obtained tin plate |
| CN110885997A (en) * | 2018-09-10 | 2020-03-17 | 上海梅山钢铁股份有限公司 | Manufacturing method of cold-rolled electroplated tin steel plate |
| CN110029381A (en) * | 2019-04-25 | 2019-07-19 | 首钢集团有限公司 | A kind of production method of high tin coating weight tin plate |
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| CN111304706A (en) * | 2020-03-13 | 2020-06-19 | 葛家玉 | Chromium-free tin plate and surface treatment method thereof |
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| WO2022061948A1 (en) * | 2020-09-28 | 2022-03-31 | 上海梅山钢铁股份有限公司 | Insoluble anode methyl sulfonic acid coating low-lead content tin plate production method and device |
| CN112111763A (en) * | 2020-09-30 | 2020-12-22 | 首钢集团有限公司 | Preparation method of tin plate with high tin plating amount and product thereof |
| CN113564645A (en) * | 2021-07-13 | 2021-10-29 | 张家港扬子江冷轧板有限公司 | Control method for reducing lead content on surface of tinplate |
| CN114351232A (en) * | 2022-01-14 | 2022-04-15 | 张家港扬子江冷轧板有限公司 | Circulation system and circulation method for electrolytic tinning pre-electroplating rinsing water |
| CN117187900A (en) * | 2023-11-03 | 2023-12-08 | 江苏省沙钢钢铁研究院有限公司 | Coated tin plate for eight-treasure porridge pot and manufacturing method thereof |
| CN117187900B (en) * | 2023-11-03 | 2024-02-09 | 江苏省沙钢钢铁研究院有限公司 | Coated tin plate for eight-treasure porridge pot and manufacturing method thereof |
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