JPH01139728A - Cooling treatment for continuously annealed cold-rolled steel sheet - Google Patents
Cooling treatment for continuously annealed cold-rolled steel sheetInfo
- Publication number
- JPH01139728A JPH01139728A JP62298671A JP29867187A JPH01139728A JP H01139728 A JPH01139728 A JP H01139728A JP 62298671 A JP62298671 A JP 62298671A JP 29867187 A JP29867187 A JP 29867187A JP H01139728 A JPH01139728 A JP H01139728A
- Authority
- JP
- Japan
- Prior art keywords
- cooling
- steel sheet
- acid
- water
- rolled steel
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 238000001816 cooling Methods 0.000 title claims abstract description 46
- 239000010960 cold rolled steel Substances 0.000 title claims abstract description 10
- 238000000034 method Methods 0.000 claims abstract description 31
- 239000002826 coolant Substances 0.000 claims abstract description 22
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 20
- 239000010959 steel Substances 0.000 claims abstract description 20
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 17
- 229910001868 water Inorganic materials 0.000 claims abstract description 17
- 238000000137 annealing Methods 0.000 claims abstract description 16
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 claims abstract description 13
- 150000007524 organic acids Chemical class 0.000 claims abstract description 6
- 150000007522 mineralic acids Chemical class 0.000 claims abstract description 5
- 150000003839 salts Chemical class 0.000 claims abstract description 5
- 230000008569 process Effects 0.000 claims description 7
- 239000000498 cooling water Substances 0.000 claims 1
- 239000000126 substance Substances 0.000 abstract description 19
- 239000002253 acid Substances 0.000 abstract description 18
- 238000006243 chemical reaction Methods 0.000 abstract description 16
- 239000007789 gas Substances 0.000 description 14
- 230000001603 reducing effect Effects 0.000 description 9
- 230000000694 effects Effects 0.000 description 8
- BDAGIHXWWSANSR-UHFFFAOYSA-N methanoic acid Natural products OC=O BDAGIHXWWSANSR-UHFFFAOYSA-N 0.000 description 8
- 239000007769 metal material Substances 0.000 description 7
- 239000004094 surface-active agent Substances 0.000 description 7
- -1 Aliphatic monocarboxylic acids Chemical class 0.000 description 6
- 229910019142 PO4 Inorganic materials 0.000 description 6
- 239000010452 phosphate Substances 0.000 description 6
- NBIIXXVUZAFLBC-UHFFFAOYSA-K phosphate Chemical compound [O-]P([O-])([O-])=O NBIIXXVUZAFLBC-UHFFFAOYSA-K 0.000 description 5
- OSWFIVFLDKOXQC-UHFFFAOYSA-N 4-(3-methoxyphenyl)aniline Chemical compound COC1=CC=CC(C=2C=CC(N)=CC=2)=C1 OSWFIVFLDKOXQC-UHFFFAOYSA-N 0.000 description 4
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 description 4
- 150000007513 acids Chemical class 0.000 description 4
- 235000019253 formic acid Nutrition 0.000 description 4
- 238000010422 painting Methods 0.000 description 4
- QTBSBXVTEAMEQO-UHFFFAOYSA-N Acetic acid Chemical compound CC(O)=O QTBSBXVTEAMEQO-UHFFFAOYSA-N 0.000 description 3
- RTZKZFJDLAIYFH-UHFFFAOYSA-N Diethyl ether Chemical compound CCOCC RTZKZFJDLAIYFH-UHFFFAOYSA-N 0.000 description 3
- OKKJLVBELUTLKV-UHFFFAOYSA-N Methanol Chemical compound OC OKKJLVBELUTLKV-UHFFFAOYSA-N 0.000 description 3
- MUBZPKHOEPUJKR-UHFFFAOYSA-N Oxalic acid Chemical compound OC(=O)C(O)=O MUBZPKHOEPUJKR-UHFFFAOYSA-N 0.000 description 3
- DNIAPMSPPWPWGF-UHFFFAOYSA-N Propylene glycol Chemical compound CC(O)CO DNIAPMSPPWPWGF-UHFFFAOYSA-N 0.000 description 3
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 description 3
- 125000004432 carbon atom Chemical group C* 0.000 description 3
- KRKNYBCHXYNGOX-UHFFFAOYSA-N citric acid Chemical compound OC(=O)CC(O)(C(O)=O)CC(O)=O KRKNYBCHXYNGOX-UHFFFAOYSA-N 0.000 description 3
- 230000007797 corrosion Effects 0.000 description 3
- 238000005260 corrosion Methods 0.000 description 3
- MTHSVFCYNBDYFN-UHFFFAOYSA-N diethylene glycol Chemical compound OCCOCCO MTHSVFCYNBDYFN-UHFFFAOYSA-N 0.000 description 3
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 description 3
- 230000003647 oxidation Effects 0.000 description 3
- 238000007254 oxidation reaction Methods 0.000 description 3
- 239000000243 solution Substances 0.000 description 3
- PUPZLCDOIYMWBV-UHFFFAOYSA-N (+/-)-1,3-Butanediol Chemical compound CC(O)CCO PUPZLCDOIYMWBV-UHFFFAOYSA-N 0.000 description 2
- NLXLAEXVIDQMFP-UHFFFAOYSA-N Ammonia chloride Chemical compound [NH4+].[Cl-] NLXLAEXVIDQMFP-UHFFFAOYSA-N 0.000 description 2
- FERIUCNNQQJTOY-UHFFFAOYSA-N Butyric acid Chemical compound CCCC(O)=O FERIUCNNQQJTOY-UHFFFAOYSA-N 0.000 description 2
- RGHNJXZEOKUKBD-SQOUGZDYSA-N D-gluconic acid Chemical compound OC[C@@H](O)[C@@H](O)[C@H](O)[C@@H](O)C(O)=O RGHNJXZEOKUKBD-SQOUGZDYSA-N 0.000 description 2
- LYCAIKOWRPUZTN-UHFFFAOYSA-N Ethylene glycol Chemical compound OCCO LYCAIKOWRPUZTN-UHFFFAOYSA-N 0.000 description 2
- KFZMGEQAYNKOFK-UHFFFAOYSA-N Isopropanol Chemical compound CC(C)O KFZMGEQAYNKOFK-UHFFFAOYSA-N 0.000 description 2
- LRHPLDYGYMQRHN-UHFFFAOYSA-N N-Butanol Chemical compound CCCCO LRHPLDYGYMQRHN-UHFFFAOYSA-N 0.000 description 2
- AMQJEAYHLZJPGS-UHFFFAOYSA-N N-Pentanol Chemical compound CCCCCO AMQJEAYHLZJPGS-UHFFFAOYSA-N 0.000 description 2
- ISWSIDIOOBJBQZ-UHFFFAOYSA-N Phenol Chemical compound OC1=CC=CC=C1 ISWSIDIOOBJBQZ-UHFFFAOYSA-N 0.000 description 2
- NBIIXXVUZAFLBC-UHFFFAOYSA-N Phosphoric acid Chemical compound OP(O)(O)=O NBIIXXVUZAFLBC-UHFFFAOYSA-N 0.000 description 2
- WNLRTRBMVRJNCN-UHFFFAOYSA-N adipic acid Chemical compound OC(=O)CCCCC(O)=O WNLRTRBMVRJNCN-UHFFFAOYSA-N 0.000 description 2
- 150000003863 ammonium salts Chemical class 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 2
- 239000011248 coating agent Substances 0.000 description 2
- 238000000576 coating method Methods 0.000 description 2
- 238000005530 etching Methods 0.000 description 2
- LNTHITQWFMADLM-UHFFFAOYSA-N gallic acid Chemical compound OC(=O)C1=CC(O)=C(O)C(O)=C1 LNTHITQWFMADLM-UHFFFAOYSA-N 0.000 description 2
- ZSIAUFGUXNUGDI-UHFFFAOYSA-N hexan-1-ol Chemical compound CCCCCCO ZSIAUFGUXNUGDI-UHFFFAOYSA-N 0.000 description 2
- 238000007654 immersion Methods 0.000 description 2
- JVTAAEKCZFNVCJ-UHFFFAOYSA-N lactic acid Chemical compound CC(O)C(O)=O JVTAAEKCZFNVCJ-UHFFFAOYSA-N 0.000 description 2
- 229910052751 metal Inorganic materials 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 239000000047 product Substances 0.000 description 2
- 238000010791 quenching Methods 0.000 description 2
- 230000000171 quenching effect Effects 0.000 description 2
- 238000005096 rolling process Methods 0.000 description 2
- 238000002791 soaking Methods 0.000 description 2
- 238000005507 spraying Methods 0.000 description 2
- NQPDZGIKBAWPEJ-UHFFFAOYSA-N valeric acid Chemical compound CCCCC(O)=O NQPDZGIKBAWPEJ-UHFFFAOYSA-N 0.000 description 2
- RGHNJXZEOKUKBD-TXICZTDVSA-N (2r,3r,4r,5r)-2,3,4,5,6-pentahydroxyhexanoic acid Chemical compound OC[C@@H](O)[C@@H](O)[C@@H](O)[C@@H](O)C(O)=O RGHNJXZEOKUKBD-TXICZTDVSA-N 0.000 description 1
- BJEPYKJPYRNKOW-REOHCLBHSA-N (S)-malic acid Chemical compound OC(=O)[C@@H](O)CC(O)=O BJEPYKJPYRNKOW-REOHCLBHSA-N 0.000 description 1
- TUSDEZXZIZRFGC-UHFFFAOYSA-N 1-O-galloyl-3,6-(R)-HHDP-beta-D-glucose Natural products OC1C(O2)COC(=O)C3=CC(O)=C(O)C(O)=C3C3=C(O)C(O)=C(O)C=C3C(=O)OC1C(O)C2OC(=O)C1=CC(O)=C(O)C(O)=C1 TUSDEZXZIZRFGC-UHFFFAOYSA-N 0.000 description 1
- HXKKHQJGJAFBHI-UHFFFAOYSA-N 1-aminopropan-2-ol Chemical compound CC(O)CN HXKKHQJGJAFBHI-UHFFFAOYSA-N 0.000 description 1
- RTBFRGCFXZNCOE-UHFFFAOYSA-N 1-methylsulfonylpiperidin-4-one Chemical compound CS(=O)(=O)N1CCC(=O)CC1 RTBFRGCFXZNCOE-UHFFFAOYSA-N 0.000 description 1
- HZAXFHJVJLSVMW-UHFFFAOYSA-N 2-Aminoethan-1-ol Chemical compound NCCO HZAXFHJVJLSVMW-UHFFFAOYSA-N 0.000 description 1
- QGZKDVFQNNGYKY-UHFFFAOYSA-O Ammonium Chemical compound [NH4+] QGZKDVFQNNGYKY-UHFFFAOYSA-O 0.000 description 1
- KWIUHFFTVRNATP-UHFFFAOYSA-N Betaine Natural products C[N+](C)(C)CC([O-])=O KWIUHFFTVRNATP-UHFFFAOYSA-N 0.000 description 1
- WWZKQHOCKIZLMA-UHFFFAOYSA-N Caprylic acid Natural products CCCCCCCC(O)=O WWZKQHOCKIZLMA-UHFFFAOYSA-N 0.000 description 1
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- RGHNJXZEOKUKBD-UHFFFAOYSA-N D-gluconic acid Natural products OCC(O)C(O)C(O)C(O)C(O)=O RGHNJXZEOKUKBD-UHFFFAOYSA-N 0.000 description 1
- FEWJPZIEWOKRBE-JCYAYHJZSA-N Dextrotartaric acid Chemical compound OC(=O)[C@H](O)[C@@H](O)C(O)=O FEWJPZIEWOKRBE-JCYAYHJZSA-N 0.000 description 1
- KCXVZYZYPLLWCC-UHFFFAOYSA-N EDTA Chemical compound OC(=O)CN(CC(O)=O)CCN(CC(O)=O)CC(O)=O KCXVZYZYPLLWCC-UHFFFAOYSA-N 0.000 description 1
- 239000001263 FEMA 3042 Substances 0.000 description 1
- KWIUHFFTVRNATP-UHFFFAOYSA-O N,N,N-trimethylglycinium Chemical compound C[N+](C)(C)CC(O)=O KWIUHFFTVRNATP-UHFFFAOYSA-O 0.000 description 1
- GRYLNZFGIOXLOG-UHFFFAOYSA-N Nitric acid Chemical compound O[N+]([O-])=O GRYLNZFGIOXLOG-UHFFFAOYSA-N 0.000 description 1
- LRBQNJMCXXYXIU-PPKXGCFTSA-N Penta-digallate-beta-D-glucose Natural products OC1=C(O)C(O)=CC(C(=O)OC=2C(=C(O)C=C(C=2)C(=O)OC[C@@H]2[C@H]([C@H](OC(=O)C=3C=C(OC(=O)C=4C=C(O)C(O)=C(O)C=4)C(O)=C(O)C=3)[C@@H](OC(=O)C=3C=C(OC(=O)C=4C=C(O)C(O)=C(O)C=4)C(O)=C(O)C=3)[C@H](OC(=O)C=3C=C(OC(=O)C=4C=C(O)C(O)=C(O)C=4)C(O)=C(O)C=3)O2)OC(=O)C=2C=C(OC(=O)C=3C=C(O)C(O)=C(O)C=3)C(O)=C(O)C=2)O)=C1 LRBQNJMCXXYXIU-PPKXGCFTSA-N 0.000 description 1
- OFOBLEOULBTSOW-UHFFFAOYSA-N Propanedioic acid Natural products OC(=O)CC(O)=O OFOBLEOULBTSOW-UHFFFAOYSA-N 0.000 description 1
- KDYFGRWQOYBRFD-UHFFFAOYSA-N Succinic acid Natural products OC(=O)CCC(O)=O KDYFGRWQOYBRFD-UHFFFAOYSA-N 0.000 description 1
- FEWJPZIEWOKRBE-UHFFFAOYSA-N Tartaric acid Natural products [H+].[H+].[O-]C(=O)C(O)C(O)C([O-])=O FEWJPZIEWOKRBE-UHFFFAOYSA-N 0.000 description 1
- GSEJCLTVZPLZKY-UHFFFAOYSA-N Triethanolamine Chemical compound OCCN(CCO)CCO GSEJCLTVZPLZKY-UHFFFAOYSA-N 0.000 description 1
- ZJCCRDAZUWHFQH-UHFFFAOYSA-N Trimethylolpropane Chemical compound CCC(CO)(CO)CO ZJCCRDAZUWHFQH-UHFFFAOYSA-N 0.000 description 1
- 238000002441 X-ray diffraction Methods 0.000 description 1
- 239000001361 adipic acid Substances 0.000 description 1
- 235000011037 adipic acid Nutrition 0.000 description 1
- 230000001476 alcoholic effect Effects 0.000 description 1
- 150000001298 alcohols Chemical class 0.000 description 1
- 125000001931 aliphatic group Chemical group 0.000 description 1
- 150000001371 alpha-amino acids Chemical class 0.000 description 1
- 235000008206 alpha-amino acids Nutrition 0.000 description 1
- BJEPYKJPYRNKOW-UHFFFAOYSA-N alpha-hydroxysuccinic acid Natural products OC(=O)C(O)CC(O)=O BJEPYKJPYRNKOW-UHFFFAOYSA-N 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 229910000147 aluminium phosphate Inorganic materials 0.000 description 1
- 235000001014 amino acid Nutrition 0.000 description 1
- 150000001413 amino acids Chemical class 0.000 description 1
- 150000001414 amino alcohols Chemical class 0.000 description 1
- 235000019270 ammonium chloride Nutrition 0.000 description 1
- 239000002280 amphoteric surfactant Substances 0.000 description 1
- JFCQEDHGNNZCLN-UHFFFAOYSA-N anhydrous glutaric acid Natural products OC(=O)CCCC(O)=O JFCQEDHGNNZCLN-UHFFFAOYSA-N 0.000 description 1
- 239000003945 anionic surfactant Substances 0.000 description 1
- 239000007864 aqueous solution Substances 0.000 description 1
- GONOPSZTUGRENK-UHFFFAOYSA-N benzyl(trichloro)silane Chemical compound Cl[Si](Cl)(Cl)CC1=CC=CC=C1 GONOPSZTUGRENK-UHFFFAOYSA-N 0.000 description 1
- 229960003237 betaine Drugs 0.000 description 1
- 238000009835 boiling Methods 0.000 description 1
- ZNFNDZCXTPWRLQ-UHFFFAOYSA-N butane-1,1,1-tricarboxylic acid Chemical compound CCCC(C(O)=O)(C(O)=O)C(O)=O ZNFNDZCXTPWRLQ-UHFFFAOYSA-N 0.000 description 1
- KDYFGRWQOYBRFD-NUQCWPJISA-N butanedioic acid Chemical compound O[14C](=O)CC[14C](O)=O KDYFGRWQOYBRFD-NUQCWPJISA-N 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 229910002090 carbon oxide Inorganic materials 0.000 description 1
- 150000007942 carboxylates Chemical class 0.000 description 1
- 150000001732 carboxylic acid derivatives Chemical class 0.000 description 1
- 239000003093 cationic surfactant Substances 0.000 description 1
- 235000015165 citric acid Nutrition 0.000 description 1
- 238000005097 cold rolling Methods 0.000 description 1
- 230000000052 comparative effect Effects 0.000 description 1
- 230000003750 conditioning effect Effects 0.000 description 1
- 238000007739 conversion coating Methods 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 239000013078 crystal Substances 0.000 description 1
- 238000005238 degreasing Methods 0.000 description 1
- 230000006866 deterioration Effects 0.000 description 1
- 230000002542 deteriorative effect Effects 0.000 description 1
- SZXQTJUDPRGNJN-UHFFFAOYSA-N dipropylene glycol Chemical compound OCCCOCCCO SZXQTJUDPRGNJN-UHFFFAOYSA-N 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 150000002148 esters Chemical class 0.000 description 1
- 239000012467 final product Substances 0.000 description 1
- 235000004515 gallic acid Nutrition 0.000 description 1
- 229940074391 gallic acid Drugs 0.000 description 1
- LRBQNJMCXXYXIU-QWKBTXIPSA-N gallotannic acid Chemical compound OC1=C(O)C(O)=CC(C(=O)OC=2C(=C(O)C=C(C=2)C(=O)OC[C@H]2[C@@H]([C@@H](OC(=O)C=3C=C(OC(=O)C=4C=C(O)C(O)=C(O)C=4)C(O)=C(O)C=3)[C@H](OC(=O)C=3C=C(OC(=O)C=4C=C(O)C(O)=C(O)C=4)C(O)=C(O)C=3)[C@@H](OC(=O)C=3C=C(OC(=O)C=4C=C(O)C(O)=C(O)C=4)C(O)=C(O)C=3)O2)OC(=O)C=2C=C(OC(=O)C=3C=C(O)C(O)=C(O)C=3)C(O)=C(O)C=2)O)=C1 LRBQNJMCXXYXIU-QWKBTXIPSA-N 0.000 description 1
- 239000000174 gluconic acid Substances 0.000 description 1
- 235000012208 gluconic acid Nutrition 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 229910052739 hydrogen Inorganic materials 0.000 description 1
- 239000001257 hydrogen Substances 0.000 description 1
- 125000004435 hydrogen atom Chemical class [H]* 0.000 description 1
- WGCNASOHLSPBMP-UHFFFAOYSA-N hydroxyacetaldehyde Natural products OCC=O WGCNASOHLSPBMP-UHFFFAOYSA-N 0.000 description 1
- 230000001771 impaired effect Effects 0.000 description 1
- 239000004310 lactic acid Substances 0.000 description 1
- 235000014655 lactic acid Nutrition 0.000 description 1
- VZCYOOQTPOCHFL-UPHRSURJSA-N maleic acid Chemical compound OC(=O)\C=C/C(O)=O VZCYOOQTPOCHFL-UPHRSURJSA-N 0.000 description 1
- 239000011976 maleic acid Substances 0.000 description 1
- 239000001630 malic acid Substances 0.000 description 1
- 235000011090 malic acid Nutrition 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 150000002739 metals Chemical class 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- FUZZWVXGSFPDMH-UHFFFAOYSA-N n-hexanoic acid Natural products CCCCCC(O)=O FUZZWVXGSFPDMH-UHFFFAOYSA-N 0.000 description 1
- 229910017604 nitric acid Inorganic materials 0.000 description 1
- QJGQUHMNIGDVPM-UHFFFAOYSA-N nitrogen group Chemical group [N] QJGQUHMNIGDVPM-UHFFFAOYSA-N 0.000 description 1
- 239000002736 nonionic surfactant Substances 0.000 description 1
- 235000005985 organic acids Nutrition 0.000 description 1
- 235000006408 oxalic acid Nutrition 0.000 description 1
- 230000001590 oxidative effect Effects 0.000 description 1
- 150000003013 phosphoric acid derivatives Chemical class 0.000 description 1
- 238000007747 plating Methods 0.000 description 1
- 150000003242 quaternary ammonium salts Chemical class 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 238000004904 shortening Methods 0.000 description 1
- 239000001488 sodium phosphate Substances 0.000 description 1
- 229910000162 sodium phosphate Inorganic materials 0.000 description 1
- 159000000000 sodium salts Chemical class 0.000 description 1
- 238000001179 sorption measurement Methods 0.000 description 1
- 239000002436 steel type Substances 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
- 150000005846 sugar alcohols Polymers 0.000 description 1
- 150000003871 sulfonates Chemical class 0.000 description 1
- 238000004381 surface treatment Methods 0.000 description 1
- 235000015523 tannic acid Nutrition 0.000 description 1
- 229940033123 tannic acid Drugs 0.000 description 1
- 229920002258 tannic acid Polymers 0.000 description 1
- 239000011975 tartaric acid Substances 0.000 description 1
- 235000002906 tartaric acid Nutrition 0.000 description 1
- 230000008719 thickening Effects 0.000 description 1
- VZCYOOQTPOCHFL-UHFFFAOYSA-N trans-butenedioic acid Natural products OC(=O)C=CC(O)=O VZCYOOQTPOCHFL-UHFFFAOYSA-N 0.000 description 1
- RYFMWSXOAZQYPI-UHFFFAOYSA-K trisodium phosphate Chemical compound [Na+].[Na+].[Na+].[O-]P([O-])([O-])=O RYFMWSXOAZQYPI-UHFFFAOYSA-K 0.000 description 1
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P10/00—Technologies related to metal processing
- Y02P10/20—Recycling
Landscapes
- Heat Treatment Of Strip Materials And Filament Materials (AREA)
Abstract
Description
【発明の詳細な説明】
〔産業上の利用分野〕
本発明は、連続焼鈍冷延鋼板の冷却処理方法に係り、特
に塗装下地処理としてのリン酸塩化成処理の劣る連続焼
鈍冷延鋼板の表面を、冷却処理過程において改質し、化
成処理性を高めるための冷却処理方法に関する。[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a cooling treatment method for continuously annealed cold rolled steel sheets, and particularly for cooling the surface of continuously annealed cold rolled steel sheets which is inferior in phosphate chemical treatment as a base treatment for painting. The present invention relates to a cooling treatment method for improving chemical conversion treatment properties by modifying in a cooling treatment process.
鋼板は自然界に於いては発錆しやすく、その最終使用状
態に於いては塗装やめっき等何等かの表面処理を施して
使用される。塗装される場合には、塗装に先立ち、いわ
ゆる塗装性とともに耐食性を高めるために鋼板にはリン
酸塩処理が施されるのが通例であり、このリン酸塩処理
によって形成されるリン酸塩処理皮膜の品質が塗装後の
塗膜耐久性を大きく支配することは周知である。Steel plates are prone to rust in the natural world, and in their final use, they are subjected to some kind of surface treatment such as painting or plating. When painted, the steel plate is usually treated with phosphate prior to painting to improve paintability and corrosion resistance, and the phosphate treatment formed by this phosphate treatment It is well known that the quality of the coating greatly controls the durability of the coating after painting.
ところで、冷間圧延により得られた銅帯は、従来、箱型
焼鈍法により６５０〜７５０℃に数時間〜１０数時間均
熱され焼鈍されていたが、近年では、連続焼鈍法の発達
によりその多くが連続焼鈍処理されるようになり、均熱
時間が数１０秒に短縮されるようになった。しかしなが
ら、かかる短時間焼鈍方式の発展は、鋼板表面特性を下
記の如く大きく変化させた。By the way, copper strips obtained by cold rolling have conventionally been annealed by soaking at 650 to 750°C for several hours to over 10 hours using a box annealing method, but in recent years, with the development of a continuous annealing method, this method has become easier. Many products are now subjected to continuous annealing, and the soaking time has been shortened to several tens of seconds. However, the development of such short-time annealing methods has significantly changed the surface properties of steel sheets as described below.
■焼鈍時間の著しい短縮は、鋼中成分の表面への濃化に
より形成される、リン酸塩処理に有効な表面濃化層の形
成を妨げることになった。(2) A significant shortening of the annealing time hindered the formation of a surface enriched layer, which is effective for phosphate treatment and is formed by the concentration of components in the steel on the surface.
■焼鈍効率を高めるため連続焼鈍法でも採用が拡大しつ
つある直火式加熱法は、雰囲気をいかにコントロールし
ても鋼帯表面にオングストローム単位の厚さの酸化膜の
形成をもたらし、この酸化膜の存在はリン酸塩処理性の
低下をもたらす。■The direct-fire heating method, which is increasingly being adopted as a continuous annealing method to improve annealing efficiency, results in the formation of an angstrom-thick oxide film on the steel strip surface no matter how the atmosphere is controlled. The presence of leads to a decrease in phosphatability.
■成形性を賦与するために添加されるＴｉやＮｂ、また
高抗張力を賦与するために添加されるＭｎやＳｉは特に
上記■の傾向が著しい。(2) Ti and Nb, which are added to impart moldability, and Mn and Si, which are added to impart high tensile strength, are particularly susceptible to the above-mentioned tendency ((ii)).
したがって、連続焼鈍プロセスの普及に伴って、連続焼
鈍冷延鋼板の化成処理性の改善が急務となっている。Therefore, with the spread of continuous annealing processes, there is an urgent need to improve the chemical conversion properties of continuously annealed cold rolled steel sheets.
他方、連続焼鈍における冷却方法として、一般的には、
ガスジェット冷却、ロール冷却、気水冷却、水焼入冷却
等の方法が採用されているけれども、この種の一般的な
冷却方法では、化成処理に適するように表面改質を行う
ことはできない。むしろ、気水冷却や水焼入冷却法では
、鋼板表面に数千人程度の酸化被膜（Ｆｅｄ、 Ｆｅｚ
Ｏｚ、Ｆｅ５０．等）を生じ、逆に著しく化成処理性を
損うものであった。On the other hand, the cooling method for continuous annealing is generally
Although methods such as gas jet cooling, roll cooling, air/water cooling, and water quenching cooling have been adopted, these types of general cooling methods cannot modify the surface to make it suitable for chemical conversion treatment. Rather, air-water cooling and water quenching cooling methods create an oxide film (Fed, Fez) on the surface of the steel sheet.
Oz, Fe50. etc.), and conversely, the chemical conversion treatment properties were significantly impaired.
そこで、化成処理性の改善に一見効果のあるとみられる
方法が提案されている。Therefore, methods that appear to be effective in improving chemical conversion treatment properties have been proposed.
（１）特公昭６１−１５１３２号公報では、ギ酸含有水
により冷却する方法を、（２）特公昭５９−３８２８５
号公報では、１０〜９０重量％のアルコール含有水によ
る冷却方法を、（３）特開昭６１−２０１７３７号公報
では、α−アミノ酸含有水溶液による冷却方法を、（４
）特開昭４９−１２２４３５号公報では塩酸を発生する
が如き塩類を接触させる方法を、それぞれ提案している
。(1) Japanese Patent Publication No. 61-15132 discloses a cooling method using formic acid-containing water; (2) Japanese Patent Publication No. 59-38285
(3) In JP-A-61-201737, a cooling method using an aqueous solution containing α-amino acids is described (4).
) JP-A-49-122435 proposes a method of contacting salts that generate hydrochloric acid.
しかし、上記（１）の方法では、冷却処理後、十分なリ
ンスを行っても、鋼板表面に黄褐色状の錆を生じ、化成
処理性が悪化することを本発明者らは確認している。However, the present inventors have confirmed that in the method (1) above, even if sufficient rinsing is performed after cooling treatment, yellow-brown rust occurs on the surface of the steel sheet, deteriorating chemical conversion treatability. .
（２）の方法では、無酸化冷却には有効であるとしても
、酸を使用する場合でのエツジング効果は全くなく、表
面改質を行うことができない。また、先に触れたように
、高抗張力材等のＭｎｓ Ｓ 、Ｓ＋、Ｐ等の成分元素
を多く含む鋼種においては、焼鈍時に表面濃化層の生成
を招き、見映えおよび化成処理性の悪化を招くが、（２
）の方法では、エツジング効果が悪いので、表面濃化層
の除去を行うことができない。Although method (2) is effective for non-oxidation cooling, it has no etching effect when using acid and cannot perform surface modification. In addition, as mentioned earlier, in steel types containing a large amount of component elements such as Mns S, S+, and P, such as high tensile strength materials, a surface concentration layer is formed during annealing, resulting in deterioration of appearance and chemical conversion treatment properties. (2
), the surface concentration layer cannot be removed because the etching effect is poor.
さらに、（３）および（４）の方法では、ｆｌｌの方法
と同様の結果を招き、化成処理性が悪化する。Furthermore, methods (3) and (4) lead to the same results as the full method, resulting in poor chemical conversion treatment properties.
そこで、本発明の主たる目的は、無酸化冷却ができると
ともに表面濃化層の除去ができ、さらに化成処理性に有
害な残渣分のリンス除去を行い得る冷却処理方法を提供
することにある。SUMMARY OF THE INVENTION Accordingly, the main object of the present invention is to provide a cooling treatment method that can perform non-oxidation cooling, remove the surface concentrated layer, and further remove rinsing of residues that are harmful to chemical conversion properties.
前記問題点を解決するための本発明は、連続焼鈍過程で
高温の冷延鋼板を冷却する方法において；水に有機また
は無機酸あるいはそれらの塩が１〜３０重量％含有した
１次冷却剤を鋼板に接触させ冷却し、
その後、水にアルコールが１〜６０重量％含有した２次
冷却剤を接触させ冷却する、
ことを特徴とするものである。To solve the above problems, the present invention provides a method for cooling a high-temperature cold-rolled steel sheet during a continuous annealing process; It is characterized in that it is cooled by being brought into contact with a steel plate, and then brought into contact with a secondary coolant containing water containing 1 to 60% by weight of alcohol.
本発明では、１次冷却剤として、酸または酸塩を含有す
る水を用いているので、酸化膜および表面濃化層を除去
しながらの無酸化冷却を行うことができる。In the present invention, since water containing an acid or an acid salt is used as the primary coolant, non-oxidative cooling can be performed while removing the oxide film and the surface concentration layer.
また、２次冷却剤として、アルコール含有水を用いてい
るので、１次冷却処理において残った酸や、錆等の腐食
生成物をリンス除去でき、この面でも化成処理性を高め
ることができる。Furthermore, since alcohol-containing water is used as the secondary coolant, acid remaining in the primary cooling treatment and corrosion products such as rust can be rinsed away, and chemical conversion treatment properties can also be improved in this respect.
以下、本発明をさらに詳説する。 The present invention will be explained in further detail below.
本発明では、１次冷却剤として、有機もしくは無機の酸
またはそれらの塩が用いられ、その含有量としては、１
〜３０重量％（以下％は全て重量％）、望ましくは３〜
１０％とされる。酸の含有量が少いと、酸化膜および表
面濃化層の除去効果が小さく、他方あまりにも多いと、
金属材を逆に腐食させる危険性があるからである。In the present invention, an organic or inorganic acid or a salt thereof is used as the primary coolant, and the content thereof is 1
~30% by weight (all percentages below are by weight), preferably 3~
It is said to be 10%. If the acid content is low, the removal effect of the oxide film and surface concentration layer will be small, while if it is too high,
This is because there is a risk of corroding the metal material.
本発明における存機酸としては、水に対する溶解性の点
からは、Ｃ数が６以下が望ましく、その例として、ギ酸
、酢酸、アロン酸、ピロピオン酸、酪酸、ペンタン酸、
ヘキサン酸等の脂肪族モノカルボン酸、シュウ酸、マレ
イン酸、コハク酸、グルタル酸、アジピン酸、Ｌ２．４
−ブタントリカルボン酸−２−ホスホネート、エチレン
ジアミンテトラ酢酸、ニドＩＪロトリ酢酸等の脂肪族多
価カルボン酸、オキシ酢酸、グルコン酸、クエン酸、乳
酸、酒石酸、リンゴ酸、没食子酸、タンニン酸等のオキ
シカルボン酸、石炭酸などを例示できる。In the present invention, the organic acid preferably has a carbon number of 6 or less from the viewpoint of solubility in water, and examples thereof include formic acid, acetic acid, allonic acid, pyropionic acid, butyric acid, pentanoic acid,
Aliphatic monocarboxylic acids such as hexanoic acid, oxalic acid, maleic acid, succinic acid, glutaric acid, adipic acid, L2.4
-Aliphatic polycarboxylic acids such as butanetricarboxylic acid-2-phosphonate, ethylenediaminetetraacetic acid, nido IJ lotriacetic acid, oxyacetic acid such as oxyacetic acid, gluconic acid, citric acid, lactic acid, tartaric acid, malic acid, gallic acid, tannic acid, etc. Examples include carboxylic acid and carbolic acid.
上記例のギ酸は、１００〜９００°Ｃ程度の高温冷却ｗ
Ａ板と接触したとき、沸騰状態となりＣＯガスを発生し
、金属材の還元効果も大きいので優れる。The formic acid in the above example is cooled to a high temperature of about 100 to 900°C.
When it comes into contact with the A plate, it becomes boiling and generates CO gas, which is excellent because it has a large reducing effect on metal materials.
また、上述の有機酸のアンモニウム塩も使用できる。こ
の有機酸のアンモニウム塩は、酸による金属の腐食を抑
制でき、好適である。Also, ammonium salts of the above-mentioned organic acids can be used. This ammonium salt of an organic acid is suitable because it can suppress the corrosion of metals caused by acids.
無機酸としては、水可溶性の酸で、例えば塩酸、硝酸、
硫酸、リン酸等を例示できる。これらの酸は、勿論併用
してもよい。Inorganic acids include water-soluble acids such as hydrochloric acid, nitric acid,
Examples include sulfuric acid and phosphoric acid. Of course, these acids may be used in combination.
また、無機酸のアンモニウム塩やナトリウム塩、たとえ
ばリン酸ナトリウム、塩化アンモニウム等も使用でき、
ＮＨ４Ｃｊｌ！は高温金属材と接触したとき］１□ガス
を発生し、金属材の還元効果も大きいので、ギ酸同様に
、性能的に優れるものである。Ammonium and sodium salts of inorganic acids, such as sodium phosphate and ammonium chloride, can also be used.
NH4Cjl! When it comes into contact with a high-temperature metal material, it generates 1□ gas and has a large reducing effect on metal materials, so it has excellent performance like formic acid.
上記のように、還元ガスを発生する酸を使用する場合、
界面活性剤、特にノニオン系のものを用いると、界面活
性剤の吸着効果によって、還元ガスの蒸気膜冷却を長時
間かつムラなく行うことができ、有効である。As mentioned above, when using an acid that generates reducing gas,
The use of a surfactant, particularly a nonionic one, is effective because the vapor film cooling of the reducing gas can be performed evenly for a long time due to the adsorption effect of the surfactant.
界面活性剤は、公知の界面活性剤を全て使用できるが、
その添加量は０．１〜１０％が好ましい。All known surfactants can be used as the surfactant, but
The amount added is preferably 0.1 to 10%.
界面活性剤の量が少ないと、還元ガスの蒸気膜の金属表
面における保持効果が少く、１０％を越えてもその効果
の増大は望めず、コスト的に不利となるからである。This is because if the amount of surfactant is small, the effect of retaining the vapor film of the reducing gas on the metal surface will be small, and even if it exceeds 10%, no increase in the effect can be expected, resulting in a cost disadvantage.
使用できる界面活性剤は、カルボン酸塩、スルホン酸塩
、硫酸エステル塩等のアニオン系界面活性剤、エーテル
型、エーテルエステル型、エステル型、含窒素型のノニ
オン系界面活性剤、アミン塩、第４級アンモニウム塩の
カチオン系界面活性剤、アミノ酸型、ベタイン型、イミ
ダシリン型の両性界面活性剤が使用できる。界面活性剤
の二種以上を併用してもよい。Surfactants that can be used include anionic surfactants such as carboxylates, sulfonates, and sulfuric acid ester salts; ether type, ether ester type, ester type, and nitrogen-containing nonionic surfactants; amine salts; Cationic surfactants such as quaternary ammonium salts, amino acid type, betaine type, and imidacilline type amphoteric surfactants can be used. Two or more surfactants may be used in combination.
蒸気膜冷却に当って、使用する酸から発生する還元ガス
に頬ることなく、外部から与えるようにしてもよく、こ
の還元ガスとしては、−酸化炭素、水素、水性ガス、変
性ガス、発生炉ガス、あるいは当業者に知られたＤＸ、
ＮＸ、ＪＩＮＸ 、 ＲＸ、 ＡＸ、ＡＳｌ？Ｘ、Ｓ
ＡＸまたはこれらガスの混合ガスが用いられる。During steam film cooling, the reducing gas generated from the acid used may be supplied from the outside without being exposed to it.This reducing gas may include - carbon oxide, hydrogen, water gas, modified gas, generating furnace. gas, or DX as known to those skilled in the art;
NX, JINX, RX, AX, ASl? X, S
AX or a mixture of these gases is used.
この還元ガスは、たとえば、上記冷却剤を収容している
槽内に金属材を通す過程で、金属材表面に向けて、ノズ
ルから吹付けることによって、金属材に接触させること
ができる。This reducing gas can be brought into contact with the metal material by, for example, spraying it from a nozzle toward the surface of the metal material during the process of passing the metal material into a tank containing the coolant.
他方、上記１次冷却剤と鋼板との接触後、鋼板表面の残
留物の除去のために接触させる２次冷却剤としては、水
にアルコールを、１〜６０％、望ましくは３〜２０％、
特に３〜１０％含有させたものを用いる。On the other hand, after the primary coolant contacts the steel plate, the secondary coolant that is brought into contact with the steel plate to remove residue on the surface of the steel plate is water containing alcohol in an amount of 1 to 60%, preferably 3 to 20%,
In particular, one containing 3 to 10% is used.
アルコール含量が少いと、リンス除去効果がなく、他方
多いと、引火の危険性があるし、かつ冷却剤としてのコ
ストとしても不利である。If the alcohol content is low, there is no rinsing removal effect, while if it is high, there is a risk of ignition and it is disadvantageous in terms of cost as a coolant.
本発明におけるアルコールとしては、水溶性および還元
作用として、炭素数が６以下のものが望ましく、この例
としては、メタノール、エタノール、イソプロパツール
、ブタノール、ペンタノール、ヘキサノール等の脂肪族
アルコール；エチレングリコール、プロピレングリコー
ル、ジエチレングリコール、ジプロピレングリコール、
１．３−ブタンジオール、トリメチロールプロパン等の
脂肪族多価アルコール；モノエタノールアミン、ジェタ
ノールアミン、トリエタノールアミン、モノイソプロパ
ツールアミン等のアミノアルコール等を挙げることがで
きる。The alcohol used in the present invention is preferably one having 6 or less carbon atoms due to its water solubility and reducing action. Examples include aliphatic alcohols such as methanol, ethanol, isopropanol, butanol, pentanol, and hexanol; glycol, propylene glycol, diethylene glycol, dipropylene glycol,
Examples include aliphatic polyhydric alcohols such as 1.3-butanediol and trimethylolpropane; amino alcohols such as monoethanolamine, jetanolamine, triethanolamine, and monoisopropanolamine.
もちろん、これらを併用してもよく、また炭素数７以上
のアルコールと、６以下の上記アルコールとを併用して
もよい。Of course, these may be used in combination, and an alcohol having 7 or more carbon atoms and the above-mentioned alcohol having 6 or less carbon atoms may be used together.
本発明において、鋼板と各冷却剤とを接触させる方法と
しては、冷却剤を鋼板へスプレー等により吹き付けたり
、冷却剤の収容槽中に鋼板を通すなどの方法がある。In the present invention, methods for bringing the steel plate into contact with each coolant include methods such as spraying the coolant onto the steel plate or passing the steel plate through a coolant storage tank.
また、各冷却剤の使用のタイミングは、連続焼鈍設備の
第１次冷却帯において、順次行ってもよいし、第１次冷
却帯において１次冷却剤を適用し、過時効処理後の第２
次冷却帯以降で２次冷却剤を適用するようにしてもよい
。さらに第１次冷却帯においては、−船釣な冷却法によ
った後、第２次冷却帯以降で第１および第２冷却剤を適
用してもよい。In addition, the timing of using each coolant may be sequentially performed in the first cooling zone of the continuous annealing equipment, or the first coolant is applied in the first cooling zone and the second coolant is used after overaging treatment.
A secondary coolant may be applied after the next cooling zone. Further, in the first cooling zone, after using a boat cooling method, the first and second coolants may be applied in the second cooling zone and thereafter.
次に実施例を比較例と共に示す。 Next, examples will be shown together with comparative examples.
アルミキルド連続鋳造鋳片を素材として、熱間圧延、酸
洗し、引続き冷間圧延し、板厚０．８１ｍ、板幅１００
０ｍに仕上げた。さらに、連続焼鈍ラインで８００℃加
熱、均熱し、ガスジェット冷却で４５０℃迄冷却（第１
次冷却帯）し、過時効処理を行った。その後の冷却処理
プロセスに本発明を適用し、第１表に示す如く、各種酸
液、アルコールの組み合せで浸漬冷却テストを行った。Using aluminum killed continuous cast slab as raw material, hot rolled, pickled, and then cold rolled, the plate thickness is 0.81 m and the plate width is 100 mm.
Finished at 0m. Furthermore, it is heated to 800℃ in a continuous annealing line, soaked, and cooled to 450℃ by gas jet cooling (first
(next cooling zone) and over-aging treatment was performed. The present invention was applied to the subsequent cooling treatment process, and immersion cooling tests were conducted using various combinations of acid solutions and alcohols as shown in Table 1.
まず各種酸液で鋼板温度４５０℃から２００℃まで浸漬
冷却（第２次冷却帯）し、各種アルコール液で、２００
℃から３０℃まで浸漬冷却（第３次冷却帯）した。その
後、１．０％圧下率の調質圧延をし、最終製品を製造し
た。First, the steel plate was cooled by immersion in various acid solutions from 450°C to 200°C (secondary cooling zone), and then cooled to 200°C in various alcoholic solutions.
℃ to 30℃ (third cooling zone). Thereafter, temper rolling was performed at a rolling reduction of 1.0% to produce a final product.
かかる工程にて製造された各種鋼板をサンプリングし、
化成処理性を調査した。その結果を第１表に示した。We sampled various steel plates manufactured through this process,
Chemical conversion treatment properties were investigated. The results are shown in Table 1.
なお、試験１１ｋＬＡ−ＧのいずれのケースもＮ＝１０
コイル（１コイル当り、約２３トン）の平均値であり、
信頬度の高いデータであると考えられる。In addition, in all cases of test 11kLA-G, N = 10
This is the average value of coils (approximately 23 tons per coil),
This data is considered to be highly reliable.
ただし、化成処理条件は次の通りである。However, the chemical conversion treatment conditions are as follows.
（１）脱脂：［ファインクリーナー４８２６Ｔｊ （
商品名）を用い、５０℃で２分間処理
（２）表面調整＝「パーコレンＺＴＪ （商品名）を
用い、２０秒間処理
（３）リン酸塩処理：「ボンデライｌ−３０３０Ｊ
（商品名）を用い、５０℃で２分間浸漬処
理
また、化成処理性については、次の（イ）〜（ハ）によ
り、評価した。(1) Degreasing: [Fine Cleaner 4826Tj (
(trade name) at 50°C for 2 minutes (2) Surface conditioning = "Percolene ZTJ (trade name), treated for 20 seconds (3) Phosphate treatment: "Bonderay I-3030J
(trade name) at 50° C. for 2 minutes.The chemical conversion treatment properties were evaluated according to the following (a) to (c).
（イ）化成被膜のフォスフオフイライト（Ｐ）と、ホバ
イト（ＩＩ） との比Ｐ／ （Ｐ ＋ Ｈ）をＸ線回折
から求めた。(a) The ratio P/(P + H) between phosphofluorite (P) and hovite (II) in the chemical conversion coating was determined from X-ray diffraction.
（０）走査型電子顕微鏡により、結晶の大きさを求めた
。(0) The size of the crystal was determined using a scanning electron microscope.
（ハ）化成被膜の付着量を重量法により求めた。(c) The amount of attached chemical conversion film was determined by gravimetric method.
以上の通り、本発明によれば、無酸化冷却かできるとと
もに表面濃化槽の除去ができ、さらに化成処理性に有害
な残渣分のリンス除去を行い得る冷却処理方法を提供す
ることができる。As described above, according to the present invention, it is possible to provide a cooling treatment method that can perform non-oxidation cooling, remove the surface thickening tank, and further perform rinsing removal of residues that are harmful to chemical conversion properties.
Claims (1)
おいて； 水に有機または無機酸あるいはそれらの塩が１〜３０重
量％含有した１次冷却剤を鋼板に接触させ冷却し、 その後、水にアルコールが１〜６０重量％含有した２次
冷却剤を接触させ冷却する、 ことを特徴とする連続焼鈍冷延鋼板の冷却処理方法。(1) In a method of cooling a high-temperature cold-rolled steel sheet during a continuous annealing process; a primary coolant containing 1 to 30% by weight of an organic or inorganic acid or a salt thereof in water is brought into contact with the steel sheet, and then cooled. A method for cooling a continuously annealed cold-rolled steel sheet, comprising: cooling water by bringing it into contact with a secondary coolant containing 1 to 60% by weight of alcohol.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP62298671A JPH01139728A (en) | 1987-11-26 | 1987-11-26 | Cooling treatment for continuously annealed cold-rolled steel sheet |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP62298671A JPH01139728A (en) | 1987-11-26 | 1987-11-26 | Cooling treatment for continuously annealed cold-rolled steel sheet |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH01139728A true JPH01139728A (en) | 1989-06-01 |
| JPH0563528B2 JPH0563528B2 (en) | 1993-09-10 |
Family
ID=17862760
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP62298671A Granted JPH01139728A (en) | 1987-11-26 | 1987-11-26 | Cooling treatment for continuously annealed cold-rolled steel sheet |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH01139728A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| BE1012753A3 (en) * | 1998-10-01 | 2001-03-06 | Centre Rech Metallurgique | Non-oxidising cooling method for a rolled steel strip |
| KR100326036B1 (en) * | 1999-09-02 | 2002-02-27 | 한 수 강 | A portable clothing custody box |
| WO2023233450A1 (en) * | 2022-05-30 | 2023-12-07 | Ｐｒｉｍｅｔａｌｓ Ｔｅｃｈｎｏｌｏｇｉｅｓ Ｊａｐａｎ株式会社 | Cooling liquid and steel sheet cooling method |
-
1987
- 1987-11-26 JP JP62298671A patent/JPH01139728A/en active Granted
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| BE1012753A3 (en) * | 1998-10-01 | 2001-03-06 | Centre Rech Metallurgique | Non-oxidising cooling method for a rolled steel strip |
| KR100326036B1 (en) * | 1999-09-02 | 2002-02-27 | 한 수 강 | A portable clothing custody box |
| WO2023233450A1 (en) * | 2022-05-30 | 2023-12-07 | Ｐｒｉｍｅｔａｌｓ Ｔｅｃｈｎｏｌｏｇｉｅｓ Ｊａｐａｎ株式会社 | Cooling liquid and steel sheet cooling method |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0563528B2 (en) | 1993-09-10 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JP5282459B2 (en) | Method for producing Si-containing steel sheet | |
| JP4813123B2 (en) | Method for producing austenitic stainless steel sheet with excellent surface quality | |
| JPH01139728A (en) | Cooling treatment for continuously annealed cold-rolled steel sheet | |
| KR100342310B1 (en) | Method for manufacturing hot dip galvanized steel sheets with excellent plating adhesion and corrosion resistance | |
| JPH02170925A (en) | Manufacture of continuously annealed cold rolled steel sheet | |
| JP3915235B2 (en) | Method for producing austenitic stainless steel sheet without surface pattern | |
| JPS6149706A (en) | Manufacture of thin austenite stainless-steel sheet | |
| JPH01156429A (en) | Method for cooling continuously annealed and cold-rolled steel sheet | |
| US6217679B1 (en) | Method for producing chromium-containing hot rolled steel strip | |
| JP3370618B2 (en) | Pickling method for stainless steel cold rolled steel strip | |
| JP4221984B2 (en) | Martensitic stainless steel cold rolled-annealed-pickled steel strip with extremely good surface gloss | |
| JP4028014B2 (en) | Pickling accelerator, pickling composition containing pickling accelerator, and metal pickling method using the same | |
| JP3133870B2 (en) | Method for producing austenitic stainless steel sheet having good surface gloss | |
| JP3133189B2 (en) | Method for producing hot-dip galvanized steel strip | |
| JP3111853B2 (en) | Method of manufacturing cold rolled stainless steel sheet | |
| JPH057446B2 (en) | ||
| KR20140060718A (en) | Grain-oriented electrical steel sheet manufacutred by the same | |
| KR20150053626A (en) | Method for annealing of ferritic stainless steel having high silicon content | |
| JP3456869B2 (en) | Manufacturing method of unidirectional electrical steel sheet | |
| JP3042831B2 (en) | Manufacturing method of thin steel sheet with excellent surface quality | |
| JP2723674B2 (en) | Manufacturing method of steel sheet with excellent surface properties | |
| JPH04232297A (en) | Manufacture of stainless cold rolled steel strip excellent in luster and corrosion resistance | |
| JPH02270969A (en) | Production of cold rolled steel sheet having superior chemical convertibility | |
| JPS5933171B2 (en) | Continuous annealing method for cold rolled steel sheets | |
| JPH03126879A (en) | Production of cold rolled steel sheet excellent in chemical conversion treating property |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| A621 | Written request for application examination |
Free format text: JAPANESE INTERMEDIATE CODE: A621 Effective date: 20040116 |
|
| A977 | Report on retrieval |
Effective date: 20050328 Free format text: JAPANESE INTERMEDIATE CODE: A971007 |
|
| A131 | Notification of reasons for refusal |
Effective date: 20050405 Free format text: JAPANESE INTERMEDIATE CODE: A131 |
|
| A521 | Written amendment |
Effective date: 20050603 Free format text: JAPANESE INTERMEDIATE CODE: A523 |
|
| A02 | Decision of refusal |
Effective date: 20050628 Free format text: JAPANESE INTERMEDIATE CODE: A02 |