CN109972037A - A kind of 360Mpa grades or more low yield strength ratio hot-galvanized steel band and its manufacturing method - Google Patents
A kind of 360Mpa grades or more low yield strength ratio hot-galvanized steel band and its manufacturing method Download PDFInfo
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- CN109972037A CN109972037A CN201910256394.XA CN201910256394A CN109972037A CN 109972037 A CN109972037 A CN 109972037A CN 201910256394 A CN201910256394 A CN 201910256394A CN 109972037 A CN109972037 A CN 109972037A
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- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D8/00—Modifying the physical properties by deformation combined with, or followed by, heat treatment
- C21D8/02—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips
- C21D8/0221—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips characterised by the working steps
- C21D8/0226—Hot rolling
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- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D8/00—Modifying the physical properties by deformation combined with, or followed by, heat treatment
- C21D8/02—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips
- C21D8/0221—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips characterised by the working steps
- C21D8/0236—Cold rolling
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D8/00—Modifying the physical properties by deformation combined with, or followed by, heat treatment
- C21D8/02—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips
- C21D8/0247—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips characterised by the heat treatment
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/02—Ferrous alloys, e.g. steel alloys containing silicon
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/04—Ferrous alloys, e.g. steel alloys containing manganese
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/06—Ferrous alloys, e.g. steel alloys containing aluminium
-
- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C2/00—Hot-dipping or immersion processes for applying the coating material in the molten state without affecting the shape; Apparatus therefor
- C23C2/04—Hot-dipping or immersion processes for applying the coating material in the molten state without affecting the shape; Apparatus therefor characterised by the coating material
- C23C2/06—Zinc or cadmium or alloys based thereon
-
- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C2/00—Hot-dipping or immersion processes for applying the coating material in the molten state without affecting the shape; Apparatus therefor
- C23C2/26—After-treatment
-
- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C2/00—Hot-dipping or immersion processes for applying the coating material in the molten state without affecting the shape; Apparatus therefor
- C23C2/34—Hot-dipping or immersion processes for applying the coating material in the molten state without affecting the shape; Apparatus therefor characterised by the shape of the material to be treated
- C23C2/36—Elongated material
- C23C2/40—Plates; Strips
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D2211/00—Microstructure comprising significant phases
- C21D2211/004—Dispersions; Precipitations
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D2211/00—Microstructure comprising significant phases
- C21D2211/005—Ferrite
Abstract
The invention discloses a kind of 360Mpa grades or more low yield strength ratio hot-galvanized steel band and its manufacturing methods, steel band chemical component composition and mass percentage are as follows: C:0.15~0.18%, Si≤0.03%, Mn:1.1~1.3%, P≤0.015%, S≤0.015%, Als:0.025~0.05%, remaining is Fe and inevitable impurity.Manufacturing method includes the processes such as smelting, continuous casting, hot rolling, sour tandem rolling, hot galvanizing.The ingredient design system that the present invention passes through low cost, cleanliness, hot-rolling coiling temperature, cold rolling reduction ratio, hot galvanizing annealing soak temperature, zinc liquid temperature, finishing and straightening elongation percentage etc. are made steel in process control, make yield strength>=360MPa of steel band, yield tensile ratio<0.80, elongation percentage A80>=25%, good processing performance and safe application performance are had both while high intensity, meet the needs of industries such as building.
Description
Technical field
The invention belongs to metallurgical technology fields, and in particular to a kind of 360Mpa grades or more low yield strength ratio hot-galvanized steel band and its
Manufacturing method.
Background technique
Cold-rolling galvanization high strength construction steel, due to intensity it is high, it is corrosion-resistant etc. be widely used in the industries such as building, pass through production part
High intensity realize be thinned drop this purpose.However, with the improvement of people's safety consciousness and the variation of adverse circumstances, to heat
The requirement of zinc-plated high strength construction steel is higher and higher, and yield tensile ratio reflects the reliable degree of steel, the lower expression material of value
Plasticity is better, and safety reliability is higher；Its value is higher, and the non-deformability for indicating material is stronger, it is not easy to it is plastically deformed,
But safety accident easily occurs if deforming.For building structural steel, it is contemplated that safety generally requires yield tensile ratio to be less than
0.8, and low yield strength ratio is also beneficial to material machine-shaping product.Hot-dip galvanized high-strength steel of the invention selects U.S. steel Lian Fare
The Continuous Hot Dip Galvanizing of zinc-plated production technology and vertical annealing furnace has the machines such as high yield, high speed, multi-functional, multi items
Group feature, production specification range are (0.3-2.5) * (900-1880) mm, pass through ingredient design and craft optimal control, exploitation one
The low yield strength ratio hot-galvanized steel band of kind low-cost high-strength, has both good processing performance and safe application performance, meets building
Etc. industries demand.102676759 B of CN discloses control annealing temperature production 390-500MPa structural level galvanizing production side
Method, chemical component composition and mass percentage are as follows: C:0.19~0.20%, Si:0.01~0.03%, Mn:0.37~
0.40%, P:0.013~0.014%, S:0.004~0.006%, Als:0.014~0.019%, remaining is Fe and can not keep away
The impurity exempted from.For the zinc-plated annealing heating temperature for using U.S. steel connection method production for 565-600 DEG C, heating temperature is low to lead to yield strength
Height, yield tensile ratio is 0.85 or more.103146998 B of CN disclose a kind of 400MPa grades or more zinc-plated high strength construction steel and its
Production method, steel plate chemical component composition and mass percentage are as follows: C:0.06~0.10%, Mn:0.4~1.0%, Si:
0.10~0.30%, P≤0.015%, S≤0.015%, Als:0.02~0.05%, Nb:0.01~0.05%, remaining is Fe.
Component system adds Nb, alloy production higher cost using low-carbon.103882202 B of CN discloses a kind of high heat-flash of continuous annealing
The manufacturing method of galvanized steel, steel plate chemical component composition and mass percentage are as follows: C:0.02~0.04%, Si:0.001~
0.03%, Mn:0.10~0.40%, P:0.001~0.015%, S:0.001~0.010%, B:0.0010~0.0020%,
Remaining is Fe and inevitable impurity element.Component system adds B, alloy production higher cost using low-carbon, and uses 500-
550 DEG C of low-temperature annealing soaking temperature, yield tensile ratio is up to 0.9.101348880 A of CN discloses a kind of high-strength galvanizing plate for structure
Production method, steel plate chemical component composition and mass percentage are as follows: C:0.16~0.20%, Mn:0.9~1.1%, Si≤
0.05%, P≤0.020%, S≤0.020%, Als:0.02~0.06%, remaining is Fe.Hot-rolling coiling temperature is relatively low, causes
Crystal grain excessively refines, and yield tensile ratio is higher；Cold rolling reduction ratio range is relatively narrow, limits the expansion of product specification；Zinc-plated is referred to
Soaking temperature, and slow cooling temperature, rapid cooling temperature, tapping temperature and zinc pot temperature are not expressly mentioned, final performance is fluctuated
It is affected.101775471 B of CN discloses a kind of method for producing mild steel heat zinc coating plate, steel plate chemical component composition and
Mass percentage are as follows: C:0.03~0.10%, Mn:0.20~0.40%, Si≤0.03%, P, S≤0.020%, remaining is
Fe and inevitable impurity element.Since the design of C, Mn ingredient is low, intensity rank is only 250MPa grades or more.
Summary of the invention
The invention solves the technical solutions that technical problem proposes are as follows: a kind of 360Mpa grades or more low yield strength ratio hot-galvanized steel
Band, the chemical component composition and mass percentage of the steel band are as follows: C:0.15~0.18%, Si≤0.03%, Mn:1.1~
1.3%, P≤0.015%, S≤0.015%, Als:0.025~0.05%, remaining is Fe and inevitable impurity.
Specifically, the thickness of strips specification is 0.3~2.5mm, width specifications are 900~1880mm.
Specifically, the steel band mechanical property: yield strength>=360MPa, yield tensile ratio<0.80, elongation percentage A80>=25%.
For the manufacturing method of a kind of 360Mpa grades or more low yield strength ratio hot-galvanized steel band as described above, the method includes
Smelting, continuous casting, hot rolling, sour tandem rolling, hot galvanizing process.
Specifically, the continuous casting working procedure, slab thickness 230mm.
Specifically, the hot-rolled process, bar plate heating stove soaking section temperature is 1200~1270 DEG C, time inside furnace 180~
280min, roughing mill and the sub-distribution of finishing mill road and each percentage pass reduction are calculated by level two setting model；Roughing outlet temperature
1060~1090 DEG C, 1030~1060 DEG C of entry temperature at finishing, 830~860 DEG C of finishing temperature of degree；Leading portion laminar flow is taken after finish to gauge
Cooling technique, 565~595 DEG C of coiling temperature, 1.8~6.0mm of hot rolled strip thickness.
Specifically, the acid tandem rolling process, 80~90 DEG C of acid liquor temperature, 1# slot acid strength >=40g/L, 3# slot acid solution is dense
Degree >=120g/L, extreme trace rinse water conductivity≤40us/cm, and 50~70 DEG C of rinse water temperature, under five Stands Cold Tandem Mill stagnation pressures
Rate 55~80%.
Specifically, the hot galvanizing process, rinses water power by 75~85 DEG C of alkali liquid temperature, lye 40~60ms/cm of conductivity
Conductance≤25us/cm, 60~75 DEG C of rinse water temperature, 690~710 DEG C of annealing soak temperature, slow cooling temperature 650~670 of annealing
DEG C, it anneals 470~500 DEG C of rapid cooling temperature, annealing tapping temperature: thickness 0.30~0.60mm, 480 ± 5 DEG C；Thickness G T.GT.GT 0.60~
0.90mm, 470 ± 5 DEG C；Thickness G T.GT.GT 0.90~1.50mm, 462 ± 5 DEG C；Thickness G T.GT.GT 1.50~1.80mm, 455 ± 5 DEG C；Thickness
> 1.80~2.50mm, 453 ± 5 DEG C, 455 ± 3 DEG C of zinc liquid temperature, finishing elongation percentage 0.6~1.2%, straightening elongation percentage 0.4~
1.0%.
The detection method of 360Mpa grades of the present invention or more low yield strength ratio hot-galvanized steel band refers to GB/T 228.The present invention provides
Hot-galvanized steel band, the component system of design do not add the alloying elements such as Nb, Ti, Mo, reduces production cost.The heat of offer
The manufacturing method of galvanized steel strip, hot-rolling coiling temperature have an impact to ferrite grain size and Carbide Precipitation, thin in order to obtain
Small ferritic structure and tiny cementite are precipitated, and the coiling temperature set is 565-595 DEG C, to promote perlitic transformation,
Finished product dissolved carbon content is reduced, lower yield tensile ratio is obtained.
The manufacturing method of hot-galvanized steel band provided by the invention, using shallow slot turbulent flow salt pickling and five rack tandems
Six roller cold continuous rolling of CVC+, have stronger rolling power, it can be achieved that 55~80% a wide range of reduction ratios production.
The manufacturing method of hot-galvanized steel band provided by the invention heats continuous annealing furnace using vertical total radiation pipe and melts
Ditch formula induction heating ceramic zinc pot, annealing soak temperature are ± 3 DEG C of (690~710), guarantee that steel band has occurred in annealing process
Full Recovery and recrystallization, to obtain equiaxed grain structure.455 ± 3 DEG C of zinc liquid temperature, temperature control precision is high, reduces steel band
The fluctuation of performance.
The manufacturing method of hot-galvanized steel band provided by the invention is rectified using four-roller wet type polishing machine and sixfold formula two curved one
Withdrawal straightening machine, finishing elongation percentage 0.6~1.2%, straightening elongation percentage 0.4~1.0% carry out performance and plate to the steel band after hot galvanizing
The improvement of form quality amount, it is ensured that final mass.
Hot-galvanized steel band yield strength>=360MPa provided by the invention, yield tensile ratio<0.80, elongation percentage A80>=25%,
Good processing performance and safe application performance are had both while high-intensitive, meet the needs of industries such as building.
The thickness specification of hot-galvanized steel band provided by the invention is 0.3~2.5mm, and width specifications are 900~1880mm, is covered
Lid application field is extensive, is conducive to promote and apply.
Detailed description of the invention
Fig. 1 is the hot rolling metallographic group of 360Mpa grades or more the low yield strength ratio hot-galvanized steel band provided in the embodiment of the present invention 1
Knit figure；
Fig. 2 is the cold rolling metallographic group of 360Mpa grades or more the low yield strength ratio hot-galvanized steel band provided in the embodiment of the present invention 1
Knit figure；
Fig. 3 is that the cold rolling of 360Mpa grades or more the low yield strength ratio hot-galvanized steel band provided in the embodiment of the present invention 1 stretches song
Line chart；
Specific embodiment
The present invention will be further described in detail below with reference to specific embodiments, but embodiments of the present invention are not limited to
This.
Table 1 is the chemical component (by weight percentage) of steel of the embodiment of the present invention, and surplus is Fe and other are inevitable
Impurity.
The chemical component of 1 steel of the embodiment of the present invention of table, unit: weight percent (%)
By molten iron KR desulfurization and converter smelting, obtain meeting the molten steel of chemical component requirement, molten steel through LF refining process,
Sheet billet continuous casting is carried out again obtains continuous casting billet.Thickness of strand is 230mm, and width is 900~1880mm, length is 8500~
11500mm。
The scale continuous casting billet of STEELMAKING PRODUCTION send to hot-rolling heating furnace and reheats, sent after dephosphorization after coming out of the stove to hot tandem into
Row rolling.It by the controlled rolling of roughing and finish rolling Continuous mill train, is batched after section cooling, section cooling takes leading portion
It is cooling, output qualification strip rolling.For hot rolled strip with a thickness of 1.8~6.0mm, width is 900~1880mm.Hot rolling technology control ginseng
Number is shown in Table 2.
The hot rolling technology control parameter of 2 steel of the embodiment of the present invention of table
By above-mentioned hot rolled strip, uncoiling carries out continuous acid-washing on sour Continuous mill train, and 80~90 DEG C of acid liquor temperature, 1# slot is sour
Liquid concentration >=40g/L, 3# slot acid strength >=120g/L, extreme trace rinse water conductivity≤40us/cm, rinse water temperature 50~70
DEG C, five Stands Cold Tandem Mill total reductions 55~80%.The technological parameter of sour tandem rolling is shown in Table 3.
The sour continuous rolling process control parameter of 3 steel of the embodiment of the present invention of table
Above-mentioned sour strip rolling uncoiling on continuous galvanizing line is subjected to continuous hot galvanizing, annealing soak temperature 690~710
DEG C, it anneals 650~670 DEG C of slow cooling temperature, anneals 470~500 DEG C of rapid cooling temperature, 470 ± 5 DEG C of annealing tapping temperature, zinc liquid temperature
455 ± 3 DEG C of degree, finishing elongation percentage 0.6~1.2%, straightening elongation percentage 0.4~1.0%.The technological parameter of hot galvanizing is shown in Table 4.
The hot dip galvanizing process control parameter of 4 steel of the embodiment of the present invention of table
Using 360Mpa grades obtained by the above method or more low yield strength ratio hot-galvanized steel band, according to metal material stretching test
Method (GB/T 228.1) is stretched, and mechanical properties value is shown in Table 5.
The mechanical property of 5 cold rolling hard steel band of the embodiment of the present invention of table
The above described is only a preferred embodiment of the present invention, being not that the invention has other forms of limitations, appoint
What those skilled in the art changed or be modified as possibly also with the technology contents of the disclosure above equivalent variations etc.
It imitates embodiment and is applied to other fields, but without departing from the technical solutions of the present invention, according to the technical essence of the invention
Any simple modification, equivalent variations and remodeling to the above embodiments, still fall within the protection scope of technical solution of the present invention.
Claims (6)
1. a kind of 360Mpa grades or more low yield strength ratio hot-galvanized steel band, which is characterized in that the steel band chemical component composition and matter
Measure percentage composition are as follows: C:0.15~0.18%, Si≤0.03%, Mn:1.1~1.3%, P≤0.015%, S≤0.015%,
Als:0.025~0.05%, remaining is Fe and inevitable impurity.
2. a kind of 360Mpa grades according to claim 1 or more low yield strength ratio hot-galvanized steel band, which is characterized in that the steel
Tape thickness specification is 0.3~2.5mm, and width specifications are 900~1880mm.
3. a kind of 360Mpa grades according to claim 1 or more low yield strength ratio hot-galvanized steel band, which is characterized in that the steel
Band yield strength>=360MPa, yield tensile ratio<0.80, elongation percentage A80>=25%.
4. according to claim 1 to the manufacture of a kind of 360Mpa grades or more low yield strength ratio hot-galvanized steel band described in 3 any one
Method, which is characterized in that the method includes smelting, continuous casting, hot rolling, sour tandem rollings, hot galvanizing process.
5. the manufacturing method of a kind of 360Mpa grades according to claim 4 or more low yield strength ratio hot-galvanized steel band, feature
It is, the continuous casting working procedure, slab thickness 230mm.
6. the manufacturing method of a kind of 360Mpa grades according to claim 4 or more low yield strength ratio hot-galvanized steel band, feature
It is to carry out the technological parameter of control each process section in accordance with the following methods:
(1) hot-rolled process: bar plate heating stove soaking section temperature is 1200~1270 DEG C, 180~280min of time inside furnace, roughing mill
It is calculated with the sub-distribution of finishing mill road and each percentage pass reduction by level two setting model；Roughing outlet temperature 1060~1090
DEG C, 1030~1060 DEG C of entry temperature at finishing, 830~860 DEG C of finishing temperature；Leading portion laminar flow cooling technology is taken after finish to gauge, is rolled up
565~595 DEG C of temperature are taken, 1.8~6.0mm of hot rolled strip thickness；
(2) sour tandem rolling process: 80~90 DEG C of acid liquor temperature, 1# slot acid strength >=40g/L, 3# slot acid strength >=120g/L,
Extreme trace rinse water conductivity≤40us/cm, 50~70 DEG C of rinse water temperature, five Stands Cold Tandem Mill total reductions 55~80%；
(3) hot galvanizing process: 75~85 DEG C of alkali liquid temperature, lye 40~60ms/cm of conductivity, water conductivity≤25us/ is rinsed
Cm, 690~710 DEG C of annealing soak temperature, anneals 650~670 DEG C of slow cooling temperature by 60~75 DEG C of rinse water temperature, rapid cooling of annealing
470~500 DEG C of temperature, annealing tapping temperature: thickness 0.30~0.60mm, 480 ± 5 DEG C；Thickness G T.GT.GT 0.60~0.90mm, 470
±5℃；Thickness G T.GT.GT 0.90~1.50mm, 462 ± 5 DEG C；Thickness G T.GT.GT 1.50~1.80mm, 455 ± 5 DEG C；Thickness G T.GT.GT 1.80~
2.50mm, 453 ± 5 DEG C, 455 ± 3 DEG C of zinc liquid temperature, finishing elongation percentage 0.6~1.2%, straightening elongation percentage 0.4~1.0%.
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Cited By (9)
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|---|---|---|---|---|
| CN110592492A (en) * | 2019-10-17 | 2019-12-20 | 山东钢铁集团日照有限公司 | Production method of ultra-deep drawing hot-dip galvanized steel for automobile roof |
| CN110607476A (en) * | 2019-09-30 | 2019-12-24 | 柳州钢铁股份有限公司 | Manufacturing method of cold-rolled hot-galvanized high-strength structural steel with yield strength of 350MPa |
| CN110699606A (en) * | 2019-09-30 | 2020-01-17 | 柳州钢铁股份有限公司 | Cold-rolled hot-galvanized high-strength structural steel with yield strength of 350MPa |
| CN111020437A (en) * | 2019-12-25 | 2020-04-17 | 山东钢铁集团日照有限公司 | Manufacturing method of hot-dip galvanized steel strip with yield strength of above 580Mpa grade |
| CN112222189A (en) * | 2020-09-11 | 2021-01-15 | 山东钢铁集团日照有限公司 | Production method of IF cold-rolled steel strip with high surface quality and high strength |
| CN112430787A (en) * | 2019-08-26 | 2021-03-02 | 上海梅山钢铁股份有限公司 | Low-yield-ratio high-strength cold-rolled hot-dip galvanized steel plate and manufacturing method thereof |
| CN112872082A (en) * | 2021-01-14 | 2021-06-01 | 山东钢铁集团日照有限公司 | Plate shape control method for extreme width and thickness deep-drawing galvanized steel plate |
| CN114395689A (en) * | 2021-12-09 | 2022-04-26 | 安阳钢铁集团有限责任公司 | Method for reducing yield platform |
| CN115074623A (en) * | 2022-06-16 | 2022-09-20 | 唐山钢铁集团高强汽车板有限公司 | Hydrogen-induced cracking resistant galvanized hot stamping steel and production method thereof |
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| CN112430787A (en) * | 2019-08-26 | 2021-03-02 | 上海梅山钢铁股份有限公司 | Low-yield-ratio high-strength cold-rolled hot-dip galvanized steel plate and manufacturing method thereof |
| CN112430787B (en) * | 2019-08-26 | 2022-04-15 | 上海梅山钢铁股份有限公司 | Low-yield-ratio high-strength cold-rolled hot-dip galvanized steel plate and manufacturing method thereof |
| CN110607476A (en) * | 2019-09-30 | 2019-12-24 | 柳州钢铁股份有限公司 | Manufacturing method of cold-rolled hot-galvanized high-strength structural steel with yield strength of 350MPa |
| CN110699606A (en) * | 2019-09-30 | 2020-01-17 | 柳州钢铁股份有限公司 | Cold-rolled hot-galvanized high-strength structural steel with yield strength of 350MPa |
| CN110592492A (en) * | 2019-10-17 | 2019-12-20 | 山东钢铁集团日照有限公司 | Production method of ultra-deep drawing hot-dip galvanized steel for automobile roof |
| CN111020437A (en) * | 2019-12-25 | 2020-04-17 | 山东钢铁集团日照有限公司 | Manufacturing method of hot-dip galvanized steel strip with yield strength of above 580Mpa grade |
| CN112222189A (en) * | 2020-09-11 | 2021-01-15 | 山东钢铁集团日照有限公司 | Production method of IF cold-rolled steel strip with high surface quality and high strength |
| CN112872082A (en) * | 2021-01-14 | 2021-06-01 | 山东钢铁集团日照有限公司 | Plate shape control method for extreme width and thickness deep-drawing galvanized steel plate |
| CN112872082B (en) * | 2021-01-14 | 2022-04-01 | 山东钢铁集团日照有限公司 | Plate shape control method for extreme width and thickness deep-drawing galvanized steel plate |
| CN114395689A (en) * | 2021-12-09 | 2022-04-26 | 安阳钢铁集团有限责任公司 | Method for reducing yield platform |
| CN115074623A (en) * | 2022-06-16 | 2022-09-20 | 唐山钢铁集团高强汽车板有限公司 | Hydrogen-induced cracking resistant galvanized hot stamping steel and production method thereof |
| CN115074623B (en) * | 2022-06-16 | 2023-08-25 | 唐山钢铁集团高强汽车板有限公司 | Zinc-plated hot stamping steel resistant to hydrogen induced cracking and production method thereof |
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