http://rdf.ncbi.nlm.nih.gov/pubchem/patent/CN-107675082-B
Outgoing Links
| Predicate | Object |
|---|---|
| classificationCPCAdditional | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C21D2211-009 |
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C22C38-02 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C22C38-04 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B21B37-74 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C21D9-04 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C22C38-24 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C21D8-005 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C22C38-26 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C22C38-28 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C22C38-24 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C21D9-04 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C22C38-02 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C22C38-04 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/B21B37-74 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C21D8-00 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C22C38-26 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C22C38-28 |
| filingDate | 2017-10-10^^<http://www.w3.org/2001/XMLSchema#date> |
| grantDate | 2019-05-10^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationDate | 2019-05-10^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | CN-107675082-B |
| titleOfInvention | Traumatic resistance rail and its manufacturing method |
| abstract | The invention belongs to rail manufacturing technology fields, and in particular to a kind of traumatic resistance rail and its manufacturing method.Uneven for prior art preparation pearlite steel rail rail head cross-section performance, the bad problem of obtained pearlite steel rail performance, the present invention provides a kind of manufacturing methods of traumatic resistance rail, comprising the following steps: a, by hot rolling of steel billet at rail；B, when rail surface central temperature is air-cooled to 800~850 DEG C, it is blown cooling medium to rail head top surface, rail head two sides and rail head two sides lower jaw, being cooled to end face center temperature is 540~570 DEG C；C, stop to rail head two sides lower jaw be blown, continue to rail head top surface, rail head two sides blowing cooling medium, be cooled to rail head skin temperature be 460~500 DEG C after, be air-cooled to room temperature.The superior rail of performance is prepared in such a way that control composition of steel, two sections of acceleration are cooling in the present invention, is suitable for the prominent section application of fatigue defect. |
| priorityDate | 2017-10-10^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
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