WO2006109489A1 - 塗膜密着性、加工性及び耐水素脆化特性に優れた高強度冷延鋼板並びに自動車用鋼部品 - Google Patents
塗膜密着性、加工性及び耐水素脆化特性に優れた高強度冷延鋼板並びに自動車用鋼部品 Download PDFInfo
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- WO2006109489A1 WO2006109489A1 PCT/JP2006/305825 JP2006305825W WO2006109489A1 WO 2006109489 A1 WO2006109489 A1 WO 2006109489A1 JP 2006305825 W JP2006305825 W JP 2006305825W WO 2006109489 A1 WO2006109489 A1 WO 2006109489A1
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- austenite
- rolled steel
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Classifications
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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
- C21D8/04—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips to produce plates or strips for deep-drawing
- C21D8/0447—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips to produce plates or strips for deep-drawing characterised by the heat treatment
- C21D8/0468—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips to produce plates or strips for deep-drawing characterised by the heat treatment between cold rolling steps
-
- 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
- C21D9/00—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor
- C21D9/46—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor for sheet metals
-
- 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
- C21D9/00—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor
- C21D9/46—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor for sheet metals
- C21D9/48—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor for sheet metals deep-drawing sheets
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- 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
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- 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
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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
- 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
-
- 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
- C21D2211/008—Martensite
Definitions
- 001 relating to rolled steel sheets and automotive steel products with excellent adhesion, workability and hydrogen resistance, especially with excellent adhesion and excellent workability and hydrogen resistance at a tensile strength of 78 Pa
- This is related to rolled steel sheets (austenite) that are optimal for the production of automotive steel products that exhibit high resistance, and automotive steel products that are excellent in hydrogenity.
- the C content is as low as 5 or less.
- Residual austenite plates have been proposed.
- the S surface is removed by controlling the continuous surface or by adjusting the point above 3 C at the above temperature, There is a need to suppress this.
- the invention has been made in view of the above circumstances, and can be obtained by using a cold-rolled steel sheet and a plate that have excellent adhesion and excellent workability at a tensile strength of 78 Pa (). To provide steel products for automobiles.
- Metal weaving is at a rate (following weaving,
- the tensile strength is above 78 Pa
- 0017 is mainly composed of S when the elemental S constituting the object occupies more than 67 atoms.
- the product is considered to be inferior as a result of analysis.
- the tensile strength is above 78 Pa
- the tensile strength is above 78 Pa, and there is a feature that satisfies the above ( ⁇ ) and (11) (sometimes 3).
- the high-rolled steel sheet according to 00121 is the following in terms of mass:
- Metal weaving is at a rate (following weaving,
- the tensile strength is above 78 Pa
- the tensile strength is above 78 Pa
- the tensile strength is above 78 Pa, and there is a feature where the above ( ⁇ ) and (11) are satisfied (may be 6).
- the present invention includes an automobile steel product obtained by using the above-mentioned misaligned plate. Mysterious
- the clad is made of a plate that is ideal for the construction of automotive steel products that exhibit excellent workability and excellent workability when the tensile strength is 78 Pa (). It is possible to achieve efficiency without adding expensive or expensive elements.
- the steel for automobiles obtained by using the plate exhibits excellent hydrogenity at a high temperature of 78 Pa.
- S compound for example, SO may be mentioned, and when the content is high, it may take the form of S product containing.
- the C content should be kept below 6. It is • 3 below, more preferably • 2 below.
- S is an element effective in promoting the C shrinkage of austenite and ensuring excellent strength lance by retaining austenite at room temperature.
- S is O ⁇ , and preferably • 5.
- S content is excessive, S will be generated, so that pickling cracks are likely to occur, and the crystallization action will be excessive and will increase. The lower is ⁇ 5.
- the element content specified in 0050 is as above, and the balance is essentially e, but as an element brought in depending on the conditions of raw materials, materials, manufacturing equipment, etc. ⁇ 2 Below S (), ⁇ Below (), ⁇ The inevitable inclusion of the following (), etc. is allowed, and within the range that does not adversely affect the above-mentioned obvious use, C and o are actively included as other elements. It is also possible.
- o Y may be added from the standpoint of increasing the degree of plateness, and may be added excessively, although it may be present on C, o up, 5 up, b5 up, 5 up, P5 up, 3 up. Then, because of lower ductility, Co is lower,, b , P is preferable to keep below ⁇ , ⁇ ⁇ ⁇ 3, and ⁇ O ⁇ 005
- Ick Light Nalite weighs over 75, preferably over 8, but is controlled by the lance with austenite, which will be described later, and adjusted appropriately to obtain the desired processing. Is recommended.
- the iclite in Ming differs from the innite weave in that it does not have charcoal in the structure. It is also different from ponalite weave with substructures such as nalite and fine grain with extremely low dislocation degree (Inite Shinshu published by the Steel Society Basic Research Group).
- the woven baiclite has strength and hydrogen resistance, and the nalite is a weave that contributes to ensuring ductility. It is necessary to control the lance to an appropriate lance.
- the bay light is 4 above and the pona light is ⁇ 5. More preferred is 5 above for baylight and 3 below for nalite.
- the above-mentioned, the above-mentioned clear, excellent residual properties exhibiting 3 or more, preferably 5 or more residual osteones.
- the upper limit is preferably 25. Austenite is present in the lath form in the baiklite.
- a lath shape means that the average () is 2 (preferably 4 and preferably the upper limit is 3).
- Mite's Ecrite shows the rate of removal of residual austenite from () et al. In the ratio of iclite obtained in this way, inite tensite, which is inevitably formed in the process of light production, may fall within the scope of light use.
- the manufacturing method for obtaining 057 clear board is not particularly limited. However, in order to improve the reason and control the form of the material that comes out on the board surface as defined above, it is sufficient to satisfy the component composition.
- hot rolling, 7 to 9 is 5 to 64 or more (preferably 6 or less),
- the compositional composition in order to prevent cracks from occurring, the compositional composition is satisfied and the hot rolling clearance is 5 C (or 48 C) in the manufacturing process. ), Rolling between 7 and 9 C, and between 5 and 64 (more preferably between 6 and less), the point of 4 C (and preferably 45 C), and water as a continuous rejection method.
- Gas-cooled cooling (GJ) Water-cooled cooling (Q) is adopted.In the case of a strike, it is effective to carry out the strike when the degree is C (or C). .
- the temperature of () above C is effective to completely dissolve the carbide to form the desired austenite, and at the same time, it is also effective to obtain the initite of the dislocation degree. It is. In degrees It should be ⁇ 2. If it is too much, the above-mentioned result due to heating cannot be sufficiently received, while the holding time is too long. More preferred is 2 to 5 seconds.
- the weaving of the plate is tempered tensitelite, and residual austenite () is present in, and is induced in the machined shape (
- the weave of the weave is a weave that contributes to securing ductility, and the return tensite contributes to the maintenance of strength, and it is necessary to control it to an appropriate lance.
- the tempering tensite is set to 5 and the light is set to 4 to 4. It is better to set it up 6 for temper tensight and 3 below for light.
- the above-mentioned bright and excellent residual osteite exhibiting excellent properties is increased by 3 and preferably by 5.
- the upper limit is preferably 25.
- austenite lath is present in the tempered tensite, the qualitativeness of the processing is improved, which is preferable from the viewpoint of good ductility.
- a lath shape means that the average () is 2 (preferably 4 and preferably the upper limit is 3).
- Initite which consists of 069 weave only (tempered tensite, light and austenite) but can be unavoidably formed during the production process of the present invention.
- iclights, etc. may fall within a range that does not impair the use of light. However, it is desirable to keep bainite icrite and the like down by occupancy, more preferably 5 or less.
- the manufacturing method for obtaining a bright plate is not particularly limited. However, in order to improve the reason and to control the form of the material that comes out on the plate surface as defined in the above ( ⁇ ), the component composition is satisfied. In addition, hot rolling, 7 to 9 is 5 to 64 or more (preferably 6 or less),
- the compositional composition in order to prevent cracks from occurring, the compositional composition is satisfied and the hot rolling clearance is 5 C (or 48 C) in the manufacturing process. ), Rolling between 7 and 9 C, and between 5 and 64 (more preferably between 6 and less), the point of 4 C (and preferably 45 C), and water as a continuous rejection method.
- Gas-cooled cooling (GJ) Water-cooled cooling (Q) is adopted.In the case of a strike, it is effective to carry out the strike when the degree is C (or C). .
- the desired (tensite light) can be obtained by cooling to the degree of s or less while avoiding the light state at the above degree of C s (preferably 2 C s).
- the weave formed as described above can be tempered to obtain the desired (tempered tensitelite) and retained austenite.
- the desired weaving and austenite are formed by ⁇ 6 at a degree of (C) 7 C above 9 C (2). If the temperature exceeds the above range, it becomes all austenite in a short time. On the other hand, if it exceeds the above range, the desired austenite cannot be secured. Furthermore, the above is recommended to obtain the desired weave and austenite. More preferred is 2 or more, and more preferred is 3 or more. If the time exceeds 6 seconds, the lath weave, which is a characteristic of tempered tensite, cannot be maintained, and the mechanical properties change. More preferred is 5 or less, and further preferred is 4 or less.
- () (C) is controlled to 3 C s (preferably 5 s), cooling to 3 C (preferably C) 48 C (or 45 C) while avoiding the light state, In addition, hold (C) or higher (preferably 2) (Osten). As a result, a large amount of residual austenite C can be reduced in an extremely long time.
- the method is characterized by the fact that the desired weaving is obtained by controlling the first step and the second step carried out without securing the desired weaving by the cold rolling process. .
- Conditions such as cooling at 3 C s and winding at a temperature of 45 C can be employed. In the cold rolling process, rolling 3-7 is recommended. It is not intended to be limited to this.
- the average (C) is controlled above C s (or 2 C s and cooled down to s or less to avoid the light state and to the desired ( (Tensite light) wear.
- the light In Ming, it is recommended to control the light to a full level of 3 but in this case, it is preferable to control the average degree above 3 C s.
- the average degree It also affects the state of residual austenite, and if the average degree is fast (preferably 3 C s, more preferably 5 C s), the residual austenite can be made into lath.
- the limit of the average degree is not particularly limited, and if it is large, it is recommended that it be large.
- the 0089 steel sheet is excellent in the above-mentioned adhesion, and also in the strength and the lance with the elongation range, so that the product can be processed satisfactorily using the plate.
- the obtained is excellent in wearability and exhibits high degree.
- the products include automobiles and industrial machinery products, and more specifically, vehicle body components such as a center line, which is a steel product for automobiles.
- the explanation will be made more concretely with the implementation under 0090, but it is not limited by the following as well as the following: ⁇ It may be implemented with modifications as long as it fits the above. It is possible, and they are all included in the explicit technical scope.
- the material having the composition shown in 0092 was manufactured, and the rolling was performed using the slurry obtained by casting.
- the results are shown in Table 2.
- the pickling was performed using an acid aqueous solution at a temperature of 7 to g C and a degree of 6 acid. As a result, cold rolling was performed to obtain a 6-thick steel plate.
- strikes, GJ Q shifts or combinations were held, and ( ⁇ ) shown in Table 2 above was held. , Strike, hold, 5 c 5
- the weaving of the 0093 board was prepared as follows.
- the ponalite volume fraction was calculated after collating the structure with a peller and a microscope (OOf).
- Austenite volume fraction (X) was calculated after collating the structure with a peller and a microscope (OOf).
- ticklite volume fraction is obtained by subtracting the area ratio of the ponalite and austenite from (5), and includes inevitably formed tensite and other structures.
- the obtained plate was used to evaluate mechanical properties and adhesion.
- the mechanical properties are determined by taking J S5 and obtaining the tension (S), () and yield (P) .
- the tensile (S) is above 78 Pa, and each time () is (8 Pa Upper case 7 37 Pa above 5) The case above was evaluated as excellent in processing.
- the obtained plate is of 5 size, and the load of 78 Pa is loaded by 4 (5 oo SC) It was evaluated by measuring the time until cracking occurred when the position of 8 was given from the natural position using Tennos. In the implementation, we evaluated that the cracking life exceeded 2 seconds, which is excellent in hydrogenity.
- a puka film of a 0097 S object and a surface was prepared, and this was observed 5 times (standing 8), and two arbitrary fields (per u) were prepared.
- the steel plate surface of the article mainly composed of 0098 S and the sump treated by the extraction puka method were observed with, and the coating was obtained by image analysis.
- the extraction Pucker method was added in the order of (a) to (d) below.
- o ⁇ 24, 27 are excellent in reasonability because they meet the constant requirements of, and wearability is excellent. In order to suppress cracks In order to ensure wearability, it is better to make the conditions recommended as a manufacturing condition, especially winding and rejection.
- o 7-2 28 29 does not satisfy any of the above 3 cases, has excellent wearability, does not have excellent strength lance, and exhibits excellent processing Is not obtained.
- 0110 o 28 29 is not a recommended condition and is inferior in reason because it is not a clearly defined form, and cracks are also generated, resulting in inferior adhesion.
- ⁇ 28 has a short pickling time, so there is not enough removal of S.
- o 29 has a high point, so S is promoted on the floor, and there is a large amount of S-type chemicals. As a result, pickling cracks occurred, resulting in poor adherence.
- 0111 S true of the plate surface of the microscope and the plate surface obtained by observing the puck of the plate obtained in this implementation is shown. 2 is true on the surface of the plate, o 8, which is a comparison. From these 2, it can be seen that the surface area of the plate is represented by () mainly composed of S.
- Reference numeral 3 is a microscope photograph obtained by observing the surface after treating the above plate with S. 3 et al., O 8 has a small phosphorus but a large.
- 4 is: ⁇ True on the plate surface of 7, but the o 8 layer is not formed in the surface layer region of the plate, and instead the material is finely dispersed. In other words, it can be confirmed that in the surface layer area of 4 et al., 7 there are almost no S-forms that deteriorate the reason, and there are many S-forms that are reasonably effective.
- Reference numeral 0114 5 is a micrograph obtained by observing the surface of the above-mentioned plate after being observed with S. However, 5 and 7 indicate that phosphorus is not small.
- a press work was applied to 0115-7 (6), which was shaped into a tutchan-like shape to simulate the centerline os being a car body component. Also, 8mm thick iron (main steel) JSC5g was used to mold the same shape.
- a material having the composition shown in 0117 () was manufactured, and rolling was performed using the slurry obtained by casting.
- the results are shown in Table 4.
- the pickling was performed using an aqueous acid solution having a temperature of 7 to 9 C and a temperature of 6 to 6.
- cold rolling was performed to obtain a 6-thick steel plate.
- a preliminary (2) is performed and the final (2) ), And in other cases only (equivalent) was performed.
- Strike, GJ shift, or a combination of these and held as shown in Table 4 above.
- the weave of the board was prepared as follows. The plate of the plate and the optical microscope (the structure of the optical microscope (f) after the observation of the structure of the light was calculated. Then, the volume fraction of the light was calculated by (X). The site volume was determined as that of the light and austenite (including the structure of bainite).
- the obtained plate was used to evaluate the mechanical properties and adhesion.
- the mechanical properties are determined by taking J S5 and obtaining the tension (S), () and yield (P) .
- the tensile (S) is above 78 Pa, and each time () is (8 Pa Upper field 8 37 Pa Upper field 7) The case above was evaluated as having excellent ductility.
- the reason is to adjust the state of the chemical on the surface of the board as follows.
- the surface of the plate was doubled and the state of the field phosphorus was adjusted. Then, X was evaluated for the case where the part that was not attached to the phosphorus was present even in the field.
- a puka film of an individual S object and a surface was prepared, and this was observed 5 times (standing 8), and two arbitrary areas were prepared.
- the surface of the surface of the compound mainly composed of 0 22 S and the sump treated by the extraction method were observed with, and the coating was obtained by image analysis.
- the extraction Puka method is as follows (a) They were added in the order of ⁇ (d).
- the field (c X c) was photographed at a magnification of 5x and the field was composed mainly of S (the S of the other elements constituting the object exceeds 67 atoms)
- the surface of the object was measured and the covering of the object mainly composed of S was obtained.
- 0127, 4 and 5 etc. can be considered as follows (where, o ⁇ indicates experiment o ⁇ ).
- o 24 27 is excellent in reasonability because it satisfies the constant requirement of 4, and it is excellent in wearability. In order to suppress cracks and ensure better wearability, the winding conditions and It is better to make this a recommended condition.
- 0128 o 2 22 satisfies the requirement specified as 5, so that a crack is not generated and a plate having excellent adherence can be obtained.
- o 7 to 2 28 29 does not satisfy any of the cases 4 to 6, and is a plate that does not have excellent wearability, does not have excellent strength lance, and exhibits excellent properties. I don't get it.
- 0133 o 28 29 is not a recommended condition, and it is not in the form of a clearly defined compound, so it is inferior in reason, and cracks are also generated and it is inferior in adhesion. O 28 is short in pickling. Insufficient removal of S, and o 29 has a high point of continuity, so S is promoted on the floor, and there is a large amount of S isomers in the gap, and also S isomers are formed and pickling cracks. Occurred, resulting in poor wearability.
- Reference numeral 7 is a microscope photograph in which the surface after the above-mentioned plate is treated is observed with S. 7 et al., O 8 indicates that small is large.
- 8 is true on the plate surface of o7, but the o8 layer is not formed in the surface layer region of the plate, and instead, the material is finely dispersed. In other words, in the surface layer area of 8 and o 7, there is almost no S body that reduces the reason, and it is effective for reason.
- 01379 is a micrograph obtained by observing the surface after the above-mentioned plate was treated with S, but 5 and o7 show that phosphorus is not small.
- a push work was applied to (6) of 01383 o 7 to obtain a tot-like shape by imitating the centerline os being a car body component. Also, as the plate, 8mm thick iron (main steel) JSC5g was used, and the same shape was obtained.
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Abstract
Description
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Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US11/908,616 US8986468B2 (en) | 2005-03-31 | 2006-03-23 | High-strength cold-rolled steel sheet excellent in coating adhesion, workability and hydrogen embrittlement resistance, and steel component for automobile |
EP06745379.5A EP1865085B1 (en) | 2005-03-31 | 2006-03-23 | High-strength cold-rolled steel sheet excellent in coating adhesion, workability and hydrogen embrittlement resistance, and steel component for automobile |
CN2006800048644A CN101120114B (zh) | 2005-03-31 | 2006-03-23 | 涂膜附着性、加工性及耐氢脆化特性优异的高强度冷轧钢板和机动车用钢零件 |
Applications Claiming Priority (4)
Application Number | Priority Date | Filing Date | Title |
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JP2005104850A JP3889768B2 (ja) | 2005-03-31 | 2005-03-31 | 塗膜密着性と延性に優れた高強度冷延鋼板および自動車用鋼部品 |
JP2005104851A JP3889769B2 (ja) | 2005-03-31 | 2005-03-31 | 塗膜密着性、加工性及び耐水素脆化特性に優れた高強度冷延鋼板並びに自動車用鋼部品 |
JP2005-104851 | 2005-03-31 | ||
JP2005-104850 | 2005-03-31 |
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WO2006109489A1 true WO2006109489A1 (ja) | 2006-10-19 |
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PCT/JP2006/305825 WO2006109489A1 (ja) | 2005-03-31 | 2006-03-23 | 塗膜密着性、加工性及び耐水素脆化特性に優れた高強度冷延鋼板並びに自動車用鋼部品 |
Country Status (5)
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US (1) | US8986468B2 (ja) |
EP (4) | EP2671961A1 (ja) |
KR (2) | KR100948998B1 (ja) |
CN (2) | CN101120114B (ja) |
WO (1) | WO2006109489A1 (ja) |
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JP4712882B2 (ja) * | 2008-07-11 | 2011-06-29 | 株式会社神戸製鋼所 | 耐水素脆化特性および加工性に優れた高強度冷延鋼板 |
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KR101041107B1 (ko) * | 2008-11-21 | 2011-06-13 | 한국기계연구원 | 강도-연신율 밸런스가 우수한 고강도 냉연강판 및 그 제조방법 |
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CN103732778A (zh) * | 2011-08-17 | 2014-04-16 | 株式会社神户制钢所 | 室温和温态下的成形性优异的高强度钢板及其温态成形方法 |
US9890437B2 (en) | 2012-02-29 | 2018-02-13 | Kobe Steel, Ltd. | High-strength steel sheet with excellent warm formability and process for manufacturing same |
WO2020095682A1 (ja) * | 2018-11-09 | 2020-05-14 | Jfeスチール株式会社 | ジルコニウム系化成処理用冷延鋼板およびその製造方法ならびにジルコニウム系化成処理鋼板およびその製造方法 |
JPWO2020095682A1 (ja) * | 2018-11-09 | 2021-02-15 | Jfeスチール株式会社 | ジルコニウム系化成処理用冷延鋼板およびその製造方法ならびにジルコニウム系化成処理鋼板およびその製造方法 |
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Also Published As
Publication number | Publication date |
---|---|
KR100948998B1 (ko) | 2010-03-23 |
US8986468B2 (en) | 2015-03-24 |
KR100955982B1 (ko) | 2010-05-06 |
EP2671960A1 (en) | 2013-12-11 |
CN102534359B (zh) | 2014-12-10 |
EP1865085A1 (en) | 2007-12-12 |
EP2679699A2 (en) | 2014-01-01 |
EP2679699A3 (en) | 2014-08-20 |
CN101120114A (zh) | 2008-02-06 |
CN102534359A (zh) | 2012-07-04 |
KR20090122405A (ko) | 2009-11-27 |
KR20070107179A (ko) | 2007-11-06 |
EP2671960B1 (en) | 2017-11-01 |
EP2671961A1 (en) | 2013-12-11 |
CN101120114B (zh) | 2013-11-06 |
EP1865085A4 (en) | 2010-07-28 |
US20090053096A1 (en) | 2009-02-26 |
EP1865085B1 (en) | 2016-03-09 |
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