http://rdf.ncbi.nlm.nih.gov/pubchem/patent/KR-20030097548-A
Outgoing Links
| Predicate | Object |
|---|---|
| assignee | http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_694f81756e92c09f407b691917f41467 |
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/E03C1-14 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/E03C1-04 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/D06F3-02 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C22C38-04 |
| filingDate | 2002-06-21-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor | http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_a3c6470394f583e61e9709a35434e8e2 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_c5c1846767df404e53396e8a3a98d2cf http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_332747108c12e0e988f6a63ad4585d20 |
| publicationDate | 2003-12-31-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | KR-20030097548-A |
| titleOfInvention | Manufacturing method of high-tension steel for line pipe having excellent tenacity at low temperature |
| abstract | The present invention relates to a method for producing a high tensile steel for line pipe having excellent cryogenic impact toughness, in weight% C: 0.04 to 0.07%, Mn: 1.40 to 1.70%, Si: 0.15 to 0.25%, P: 0.010% or less, S: 0.003% or less, Nb: 0.040 to 0.060%, Ti: 0.010 to 0.025%, Mo: 0.10 to 0.30%, Ni: 0.20 to 0.35%, Cr: 0.15 to 0.25% and the balance consists of Fe and other unavoidable impurities When the molten steel is externally refined, the inclusions are spheroidized, and then the spheroidized slab is reheated at a temperature of 1160 to 1185 ° C, a rolling reduction of 25% or more at the final pass of rough rolling, a bar thickness of 45 to 55 mm, a rough rolling finish temperature. It includes heating, rolling, and cooling at 880 to 920 ° C, finishing rolling temperature of 780 to 820 ° C, and winding temperature of 540 to 590 ° C, thereby ensuring excellent impact toughness and low cost even in cryogenic environments at minus 60 ° C. It is possible to manufacture high tensile steels for line pipes with excellent cryogenic impact toughness. have. |
| isCitedBy | http://rdf.ncbi.nlm.nih.gov/pubchem/patent/KR-101091368-B1 |
| priorityDate | 2002-06-21-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 20.