http://rdf.ncbi.nlm.nih.gov/pubchem/patent/KR-19990054705-A
Outgoing Links
| Predicate | Object |
|---|---|
| classificationCPCAdditional | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B21B2265-14 |
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C22C38-002 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B21B3-02 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B21B37-16 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B21B1-16 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B21B1-42 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/B21B3-00 |
| filingDate | 1997-12-26-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationDate | 1999-07-15-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | KR-19990054705-A |
| titleOfInvention | Hot wire rolling method of bismuth-sulfur free cutting steel without surface defects |
| abstract | The present invention relates to a method for producing a bismuth-sulfur free cutting steel wire used in automobiles or precision equipment parts and the like; The purpose of the present invention is to provide a hot wire rolling method to solve the occurrence of surface flaw or crack of wire rod by hot embrittlement during wire rod rolling.n n n The present invention for achieving the above object, by weight (PPM), carbon (C): 0.10% or less, silicon (Si): 0.05% or less, manganese (Mn): 1.20-1.40%, phosphorus (P): 0.07-0.09%, sulfur (S): 0.27-0.33%, aluminum (Al): 0.01% or less, bismuth (Bi): 0.05-0.15%, boron (B): 70-130PPM, and the remaining Fe and other unavoidable impurities In the method of heating the hot wire rod including the billet (Billet) consisting of rough rolling, intermediate sand rolling, filament rolling by heating to 1100-1250 ℃n n n The rough rolling is carried out with a rolling reduction ratio of 10% or less in a 1-2 pass, followed by a rolling reduction ratio of 10-20% in a 3-5 pass, and a hot wire re-rolling method of bismuth (Bi) -sulfur (S) -based free cutting steel. Let that point be about. |
| isCitedBy | http://rdf.ncbi.nlm.nih.gov/pubchem/patent/KR-100775269-B1 http://rdf.ncbi.nlm.nih.gov/pubchem/patent/KR-100454744-B1 |
| priorityDate | 1997-12-26-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 40.