CN108018512A - A kind of alloyed hot-dip galvanized steel sheet and its manufacture method with excellent formability - Google Patents
A kind of alloyed hot-dip galvanized steel sheet and its manufacture method with excellent formability Download PDFInfo
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- CN108018512A CN108018512A CN201610928111.8A CN201610928111A CN108018512A CN 108018512 A CN108018512 A CN 108018512A CN 201610928111 A CN201610928111 A CN 201610928111A CN 108018512 A CN108018512 A CN 108018512A
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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
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- 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
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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
- C23C2/34—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
- C23C2/36—Elongated material
- C23C2/40—Plates; Strips
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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
- C23C22/00—Chemical surface treatment of metallic material by reaction of the surface with a reactive liquid, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals
- C23C22/05—Chemical surface treatment of metallic material by reaction of the surface with a reactive liquid, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals using aqueous solutions
- C23C22/68—Chemical surface treatment of metallic material by reaction of the surface with a reactive liquid, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals using aqueous solutions using aqueous solutions with pH between 6 and 8
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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
- C23C28/00—Coating for obtaining at least two superposed coatings either by methods not provided for in a single one of groups C23C2/00 - C23C26/00 or by combinations of methods provided for in subclasses C23C and C25C or C25D
- C23C28/30—Coatings combining at least one metallic layer and at least one inorganic non-metallic layer
- C23C28/32—Coatings combining at least one metallic layer and at least one inorganic non-metallic layer including at least one pure metallic layer
- C23C28/321—Coatings combining at least one metallic layer and at least one inorganic non-metallic layer including at least one pure metallic layer with at least one metal alloy layer
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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
- C23C28/00—Coating for obtaining at least two superposed coatings either by methods not provided for in a single one of groups C23C2/00 - C23C26/00 or by combinations of methods provided for in subclasses C23C and C25C or C25D
- C23C28/30—Coatings combining at least one metallic layer and at least one inorganic non-metallic layer
- C23C28/32—Coatings combining at least one metallic layer and at least one inorganic non-metallic layer including at least one pure metallic layer
- C23C28/322—Coatings combining at least one metallic layer and at least one inorganic non-metallic layer including at least one pure metallic layer only coatings of metal elements only
- C23C28/3225—Coatings combining at least one metallic layer and at least one inorganic non-metallic layer including at least one pure metallic layer only coatings of metal elements only with at least one zinc-based layer
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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
- C23C28/00—Coating for obtaining at least two superposed coatings either by methods not provided for in a single one of groups C23C2/00 - C23C26/00 or by combinations of methods provided for in subclasses C23C and C25C or C25D
- C23C28/30—Coatings combining at least one metallic layer and at least one inorganic non-metallic layer
- C23C28/34—Coatings combining at least one metallic layer and at least one inorganic non-metallic layer including at least one inorganic non-metallic material layer, e.g. metal carbide, nitride, boride, silicide layer and their mixtures, enamels, phosphates and sulphates
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Abstract
A kind of alloyed hot-dip galvanized steel sheet and its manufacture method with excellent formability, the hot-dip galvanizing sheet steel are followed successively by cold-rolled steel sheet, alloyed hot-dip zinc coating, solid lubricant layer and Rust Preventing Oil Film from the bottom up；Wherein, solid lubricant layer is mainly made of Zn sulfide and Fe sulfide, and the weight of Zn sulfide and Fe sulfur elements is 1~40mg/m2The solid lubricant layer can improve mobility of the alloyed hot-dip galvanized steel sheet in punch process forming process, the stamping formabilily of alloyed hot-dip galvanized steel sheet is improved, eliminates or mitigates viscous zinc of the alloyed hot-dip galvanized steel sheet in stamping process and powder of detached phenomenon.The alloyed hot-dip galvanized steel sheet of the present invention has good surface lubrication, good resistance to chalking, is maintaining outside as the original performance of automobile body-used steel plate, also shapes performance with good.
Description
Technical field
The invention belongs to hot-dip galvanizing sheet steel field, and in particular to a kind of alloyed zinc hot dip galvanized with excellent formability
Steel plate and its manufacture method.
Background technology
Automobile, particularly car are very high with material requirement to it, it is desirable to which that it is with high surface quality, high corrosion resistance
And good it can shape performance.Alloyed hot-dip galvanized steel sheet has superior corrosion resistance and surface quality, and
Good weldability and coating, are widely used in all kinds of automotive body panels.
The formability of alloyed hot-dip galvanized steel sheet is influenced by Coating composition (Fe contents), coating phase composition.Work as alloy
When the coating iron content of change hot-dip galvanizing sheet steel is relatively low, coating surface has more ζ phases, because ζ phase hardness is relatively low, when shaping
Frictional force between mould is big, and its frictional behavior it is unstable, it is easy generation mould glue zinc problem, these affect steel plate
Formability, in some instances it may even be possible to cause steel plate during punching press to crack.And when coating iron content is high, coating surface is mainly δ phases (ζ
Mutually reduce, even without), coating surface hardness is improved at this time, but simultaneously because coating Fe contents are high, steel plate is with plating stratum boundary
There are Γ phases in face, when Γ phases increase, steel plate Rating Technologies of Galvanneal Coating in forming process will be caused to come off, this not only influences the table of stamping parts
Face quality, also influences the formability of steel plate, in some instances it may even be possible to cause steel plate during punching press to crack.
The press formability of above-mentioned alloyed hot-dip galvanized steel sheet is unstable, mould glues zinc to solve, and powder of detached is asked
Topic, in Japanese Patent Laid-Open 1-319661 publications, it is proposed that the re-plating one in galvanizing or alloyed hot-dip zinc layers
The iron-based alloy layer of layer hard.Although this technology can preferably solve the above problems, the method need in galvanizing or
Make further electroplating processes after hot-dip galvanized alloy, not only complex procedures, but also production cost is also high.
In Chinese patent CN1207424C, there is provided a kind of alloying that can obtain good sliding and chalking resistance
The production technology of hot-dip galvanizing sheet steel.The technology, which uses, contacts zinc coat and high-temperature vapor, or in oxygen concentration more than 20%
Heated in atmosphere, or containing hydrogen peroxide, nitric acid oxidizing agent solution in aoxidize the methods of in the coating table Jing Guo skin-pass
A certain amount of zinc oxide layer is formed on face, so as to improve the sliding and chalking resistance of alloyed hot-dip galvanized steel sheet.According to this
Technology, steel plate complete hot-dip galvanized alloy and be adjusted rolling after, coating surface formed zinc oxide layer before, need to adopt
Removed with a process (being handled as immersed in sodium hydroxide solution) caused by alloying, coating is still present in after rolling
The oxide on surface, while also require the Several Thiourea Derivatives on Zinc Plate Surface after alloying to have a certain amount of ζ phases, otherwise it is difficult to reach the invention
Effect.
A kind of alloyed hot-dip galvanized steel sheet having excellent formability and its system are disclosed in Chinese patent CN102666903A
Make method.The art solutions are by controlling alloyed hot-dip galvanized steel sheet to contain appropriate Coating composition, and in coating surface
Form the film of the composite oxides containing Mn, P and water-soluble P-compound improves Sheet Forming Ability purpose to reach.But even if
The technical solution provided according to the patent is operated, the alloyed zinc hot dip galvanized steel containing Mn, P composite oxide film of acquisition
Plate, its skin-friction coefficient is still higher, and the mobility of steel plate is still not ideal enough when shaping.
Chinese patent CN102888578A discloses a kind of production of the hot-dip galvanizing sheet steel with good surface frictional behavior
Method, to improving hot pure zinc plating surface of steel plate frictional behavior, improve its formability has preferably the art solutions
Effect.But for alloyed hot-dip galvanized steel sheet, which does not have obvious effect then.
The content of the invention
It is an object of the invention to provide a kind of alloyed hot-dip galvanized steel sheet with excellent formability and its manufacture
Method, the alloyed hot-dip galvanized steel sheet have good surface lubrication, good resistance to chalking, are maintaining as Automobile
Outside the original performance of body steel plate, also performance is shaped with good.
To reach above-mentioned purpose, technical scheme is as follows：
A kind of alloyed hot-dip galvanized steel sheet with excellent formability, it is followed successively by cold-rolled steel sheet, closes from the bottom up
Aurification hot dip galvanizing coating, solid lubricant layer and Rust Preventing Oil Film；
Wherein, the chemical component weight percentage of the alloyed hot-dip zinc coating is：Al 0.05~0.2%, Fe 5~
13%, surplus is Zn and inevitable impurity；The solid lubricant layer contains Zn sulfide and Fe sulfide, Zn sulfide and
S elements gross weight in Fe sulfide is 1~40mg/m2, wherein, the molar ratio of Fe sulfide and Zn sulfide is 1:20~1:
5。
Preferably, in the solid lubricant layer, the S elements gross weight in Zn sulfide and Fe sulfide is 2~20mg/
m2, wherein, the molar ratio of Fe sulfide and Zn sulfide is 1:13~1:7.
Preferably, in the solid lubricant layer, the S elements gross weight in Zn sulfide and Fe sulfide is 4~10mg/
m2, wherein, the molar ratio of Fe sulfide and Zn sulfide is 1:11~1:8.
Further, the component of the solid lubricant layer is in addition to being mainly Zn sulfide and Fe sulfide, also containing other
Material composition, for example, including but not limited to the oxide of Zn, phosphate, sulfate, the oxide of Fe, phosphate and sulfate
In one or more.
Further, the total mole number of the oxide of the Zn or Fe, phosphate and sulfate and foregoing Zn sulfide and
The ratio between total mole number of Fe sulfide is less than 1.
Further, the Rust Preventing Oil Film of the solid lubrication layer surface can be the anti-rust and lubrication of conventionally used commercialization
Oil, its oil film weight are 0.1~3g/m2。
The institutional framework (component of coating and the phase group that shape performance and depend on coating of alloyed hot-dip galvanized steel sheet
Into)., at present can not be merely by control Coating composition, phase group due to the characteristic of alloyed hot-dip galvanized steel sheet zinc coat phase structure
Into further improving the formability of alloyed hot-dip galvanized steel sheet.
Alloyed hot-dip galvanized steel sheet of the present invention, is maintaining outside as the original performance of automobile body-used steel plate, is also having
Good shapes performance, has good surface lubrication and good resistance to chalking.The alloyed hot-dip galvanized steel sheet
Well processed forming property is to make further surface treatment to its surface again after handling by hot-dip galvanized alloyization to realize.
Specifically, the good processability alloyed hot-dip galvanized steel sheet composition of the present invention is described as follows：
Cold-rolled steel sheet in the present invention is usually punching press IF steel.
In the present invention, the alloyed hot-dip zinc coating in the surface of cold-rolled steel plate, if Al content is too low in Coating composition,
It is, for example, less than 0.05% mass percent, then alloyed zinc hot dip galvanized binding force of cladding material can be caused to decline；If Coating composition Al content
It is excessive, 0.2% mass percent is greater than, then is difficult to form alloyed hot-dip zinc coating or coating alloying is incomplete；
It is, for example, less than 5% mass percent, then the alloying of coating is incomplete, in coating surface if Fe contents are too low in Coating composition
There are pure zinc phase (η phases), the performance that shapes of steel plate is adversely affected；If Coating composition Fe too high levels, are greater than
13% mass percent, then due to that can form more Γ phases at coating/cold-rolled steel sheet interface, cause coating that dusting occurs and take off
Fall.
In the present invention, the solid lubricant layer on the alloyed hot-dip Zinc Deposit, mainly by the sulfide group of Zn, Fe
Into Zn sulfide and Fe sulfide therein have good solid lubricant effect, and table is played during Steel Sheet
Face lubricating action, playing improves alloyed hot-dip galvanized steel sheet mobility in punch process forming process, improves alloyed hot-dip
Zinc Steel Sheet performance, eliminates or mitigates the work that zinc and powder of detached are glued in alloyed hot-dip galvanized steel sheet stamping process
With.
If the Zn sulfide and Fe sulfide weight are less than 1mg/m2(in terms of S), then the lubricant effect played is limited, no
It is enough the stamping formabilily for improving alloyed hot-dip galvanized steel sheet；If the Zn sulfide and Fe sulfide weight are more than 40mg/
m2(in terms of S), the then lubricant effect played reach saturation state, at the same excessive Zn, Fe sulfide to the welding performance of steel plate,
Coating performance can be negatively affected.
In addition, according to the present invention, Fe sulfide and the molar ratio of Zn sulfide are defined to 1 in the solid lubricant layer:20
~1:5.If the molar ratio of the Fe sulfide and Zn sulfide is less than 1:20, then the lubricant effect that the solid lubricant layer plays
Decline, improve the effect unobvious of alloyed hot-dip galvanized steel sheet stamping formabilily；If the Fe sulfide and Zn sulfide
Molar ratio is more than 1:5, then alloyed zinc hot dip galvanized binding force of cladding material decline at this time, easily occurs powder of detached, i.e. alloying heat
The formability of galvanized steel plain sheet will deteriorate.
The present invention is coated with appropriate Rust Preventing Oil Film in the solid lubrication layer surface, can improve the alloyed hot-dip
Zinc steel plate corrosion resistance, and it is possible to further improve its formability.
The manufacture method of the alloyed hot-dip galvanized steel sheet with excellent formability of the present invention, comprises the following steps：
1) cold-rolled steel sheet is subjected to galvanizing with conventional hot dip galvanizing process, and carries out Alloying Treatment, obtain alloying heat
Galvanized steel plain sheet；Wherein, the chemical component weight percentage of galvanneal coating is：Al 0.05~0.2%, Fe 5~13%, surplus
For Zn and inevitable impurity；
2) make alloyed hot-dip galvanized steel sheet immersion room temperature at normal temperatures contains S2-Aqueous solution, makes galvanneal coating surface with containing
S2-Aqueous solution contacts 1~60 second, and solid lubricant layer is formed in alloying Several Thiourea Derivatives on Zinc Plate Surface；
3) rust preventive lubricating oil is coated on the solid lubricant layer of surface of steel plate.
Further, it is described to contain S in step 2)2-Aqueous solution is the neutrality of alkali metal sulphide or alkaline earth sulfide
Or slightly acidic water solution, S in the solution2-Content is 0.2~10g/L.
Further, it is described to contain S2-F can be contained in aqueous solution-Ion.
In the manufacturing method of the present invention, it is described to contain S2-A small amount of F can be contained in aqueous solution-Ion, can be with accelerating solid
The formation of lubricating layer, by containing S described in control2-S in aqueous solution2-Content and alloyed hot-dip galvanized steel sheet (coating surface) with
Containing S2-The time of contact of aqueous solution, obtains solid lubricant layer of the present invention.
Compared with prior art, the invention has the advantages that：
The surface treatment of the present invention is a kind of inorganic surface solid lubricating processing, by the surface treatment, in alloying
Hot dip galvanizing steel plate coating surface forms one layer thin of inoganic solids film, which plays surface in stamping process
Lubricating action, improves mobility of the alloyed hot-dip galvanized steel sheet in punch process forming process, so as to improve alloyed hot-dip
The stamping formabilily of zinc steel plate, the viscous zinc of elimination or mitigation alloyed hot-dip galvanized steel sheet in stamping process take off with dusting
Fall phenomenon.
Meanwhile to steel plate, the phosphorating treatment before the paint after automobile factory is stamping does not have any unfavorable shadow to the inoganic solids film
Ring.
The present invention is coated with appropriate Rust Preventing Oil Film in the solid lubrication layer surface, can improve the alloyed hot-dip
The corrosion resistance of zinc steel plate, and it is possible to further improve its formability.
Brief description of the drawings
Fig. 1 is that the alloyed hot-dip galvanized steel sheet of the embodiment of the present invention 3 is contrasted with the surface friction characteristics of comparative example 2.
Embodiment
Below in conjunction with specific embodiment, the invention will be further described.
Embodiment
Cold Rolled IF Sheet is subjected to galvanizing according to common hot dip galvanizing process, and carries out Alloying Treatment, obtains alloy
Change hot-dip galvanizing sheet steel, the component for making galvanneal coating is (percentage by weight)：Al 0.05~0.2%, Fe 5~13%, surplus
For Zn and inevitable impurity.Make alloyed hot-dip galvanized steel sheet immersion room temperature at normal temperatures contains S2-Aqueous solution, in alloying
Several Thiourea Derivatives on Zinc Plate Surface forms the solid lubricant layer of different weight sulfide, then coats suitable rust preventive lubricating oil in surface of steel plate,
Performance evaluation is carried out after when placement 24 is small at room temperature, referring to table 1.
With same alloyed hot-dip galvanized steel sheet (without with containing S2-Aqueous solution contacts, or even if contacts but fail to be formed
The solid lubricant layer of sufficient amount) sample as a comparison case, identical rust preventive lubricating oil is coated with identical condition, is put at room temperature
Put 24 it is small when after carry out performance evaluation.
Performance evaluation：
Skin-friction coefficient：Surface of steel plate friction coefficient is measured using tablet sliding scale.
Measuring condition is：Ram pressures 2000N, sliding speed 200mm/min, sliding distance 100mm.With steel plate table
The lubricant effect of face friction coefficient evaluation surface of steel plate solid lubricant layer.Friction coefficient is smaller, then lubricant effect is better, improves and closes
The effect of aurification hot-dip galvanizing sheet steel stamping formabilily is better.
Phosphatization adaptability：Using the phosphating process used in certain automobile factory, to alloyed hot-dip galvanized steel sheet of the present invention and right
Proportional test bar carries out phosphatization experiment under the same conditions.
Experiment condition is：Phosphating solution is is afraid of card PB3020 phosphating solutions, and the 2 minutes time of 50 DEG C of skimming temp, table tune 0.5 divides
Clock, 3 minutes time of 40 DEG C of phosphatization temperature.The crystallite size and uniformity of scanning electron microscopic observation phosphating coat are used after phosphatization experiment,
If phosphating coat crystal size is no more than 10 μm and uniform, it is OK to review its phosphatization adaptability.Evaluation result is as shown in table 1.
Table 1
By table 1 as it can be seen that the alloyed hot-dip galvanized steel sheet of the present invention is compared with the alloyed hot-dip galvanized steel sheet of comparative example, its table
Face friction coefficient is decreased obviously, this shows that technical solution of the present invention can improve the punching press lubricity of alloyed hot-dip galvanized steel sheet
Can, and there is good phosphatization adaptability.
Frictional behavior contrasts：The alloyed hot-dip galvanized steel sheet of embodiment 3 and comparative example 2 is subjected to frictional behavior contrast, knot
Fruit is referring to Fig. 1, and abscissa is Rubbing number in figure, fraction time when can be tested with qualitative characterization, i.e. Rubbing number more it is big then
Qualitative representation fraction time is longer.
Result illustrates that the alloyed hot-dip galvanized steel sheet of comparative example 2, its skin-friction coefficient is with fraction time in Fig. 1
Extend and increased dramatically, that is, show that the frictional behavior of the alloyed hot-dip galvanized steel sheet is very unstable in friction process, in reality
It is unstable that stamping formabilily is shown as in stamping.And the alloyed hot-dip galvanized steel sheet of the embodiment of the present invention 3 then shows
Very stable for frictional behavior, this shows that technical solution of the present invention not only improves alloyed hot-dip galvanized steel sheet in stamping process
In lubricity and mobility, also improve the stamping stability of alloyed hot-dip galvanized steel sheet.
Claims (10)
1. a kind of alloyed hot-dip galvanized steel sheet with excellent formability, it is followed successively by cold-rolled steel sheet, alloy from the bottom up
Change hot dip galvanizing coating, solid lubricant layer and Rust Preventing Oil Film；
Wherein, the chemical component weight percentage of the alloyed hot-dip zinc coating is：Al 0.05~0.2%, Fe 5~
13%, surplus is Zn and inevitable impurity；
The solid lubricant layer contains Zn sulfide and Fe sulfide, and the S elements gross weight in Zn sulfide and Fe sulfide is 1
~40mg/m2, wherein, the molar ratio of Fe sulfide and Zn sulfide is 1:20~1:5.
2. the alloyed hot-dip galvanized steel sheet according to claim 1 with excellent formability, it is characterised in that described
In solid lubricant layer, the S elements gross weight in Zn sulfide and Fe sulfide is 2~20mg/m2。
3. the alloyed hot-dip galvanized steel sheet according to claim 1 with excellent formability, it is characterised in that described
In solid lubricant layer, the molar ratio of Fe sulfide and Zn sulfide is 1:13~1:7.
4. the alloyed hot-dip galvanized steel sheet according to claim 1 with excellent formability, it is characterised in that described
In solid lubricant layer, the S elements gross weight in Zn sulfide and Fe sulfide is 4~10mg/m2；Fe sulfide and Zn sulfide
Molar ratio be 1:11~1:8.
5. there is the alloyed hot-dip galvanized steel sheet of excellent formability, its feature according to claim 1-4 any one of them
It is, in the solid lubricant layer also oxide containing Zn, phosphate, sulfate, the oxide of Fe, phosphate and sulfate
One or more.
6. the alloyed hot-dip galvanized steel sheet according to claim 5 with excellent formability, it is characterised in that described
The total mole number of the oxide of Zn or Fe, phosphate and sulfate and wherein the ratio between total mole number of Zn sulfide and Fe sulfide
Less than 1.
7. there is the alloyed hot-dip galvanized steel sheet of excellent formability, its feature according to claim 1-6 any one of them
It is, the Rust Preventing Oil Film weight of the solid lubrication layer surface is 0.1~3g/m2。
8. a kind of manufacture method of the alloyed hot-dip galvanized steel sheet with excellent formability, comprises the following steps：
1) cold-rolled steel sheet is subjected to galvanizing with conventional hot dip galvanizing process, and carries out Alloying Treatment, obtained alloyed zinc hot dip galvanized
Steel plate；Wherein, the chemical component weight percentage of galvanneal coating is：Al 0.05~0.2%, Fe 5~13%, surplus Zn
And inevitable impurity；
2) make alloyed hot-dip galvanized steel sheet immersion room temperature at normal temperatures contains S2-Aqueous solution, makes galvanneal coating surface and contains S2-Water
Solution contacts 1~60 second, and solid lubricant layer is formed in alloying Several Thiourea Derivatives on Zinc Plate Surface；
3) rust preventive lubricating oil is coated on the solid lubricant layer of surface of steel plate.
9. the manufacture method of the alloyed hot-dip galvanized steel sheet with excellent formability as claimed in claim 8, its feature
It is, it is described to contain S in step 2)2-Aqueous solution is alkali metal sulphide, either the neutrality or faintly acid of alkaline earth sulfide
Aqueous solution, S in the solution2-Content is 0.2~10g/L.
10. the manufacture method of the alloyed hot-dip galvanized steel sheet with excellent formability as claimed in claim 8 or 9, its
It is characterized in that, it is described to contain S2-Contain F in aqueous solution-Ion.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610928111.8A CN108018512B (en) | 2016-10-31 | 2016-10-31 | A kind of alloyed hot-dip galvanized steel sheet and its manufacturing method with excellent formability |
Applications Claiming Priority (1)
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| CN109679420A (en) * | 2018-12-27 | 2019-04-26 | 武汉材料保护研究所有限公司 | A kind of precoating is overlying on the bilayer solid film and preparation method thereof of stamping processing plate surface |
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| CN109679420A (en) * | 2018-12-27 | 2019-04-26 | 武汉材料保护研究所有限公司 | A kind of precoating is overlying on the bilayer solid film and preparation method thereof of stamping processing plate surface |
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