http://rdf.ncbi.nlm.nih.gov/pubchem/patent/CN-109530475-B
Outgoing Links
| Predicate | Object |
|---|---|
| classificationCPCAdditional | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C21D2211-001 |
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C21D8-105 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B21C37-06 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08F220-56 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/F16L9-02 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C21D1-78 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C21D9-08 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C21D1-26 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08F220-06 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/F16L9-02 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/B21C37-06 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C21D1-26 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08F220-06 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C21D1-78 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C21D9-08 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C21D8-10 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08F220-56 |
| filingDate | 2018-10-24-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| grantDate | 2021-03-30-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationDate | 2021-03-30-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | CN-109530475-B |
| titleOfInvention | Manufacturing process of austenitic stainless steel pipe fitting |
| abstract | The invention discloses a manufacturing process of an austenitic stainless steel pipe fitting, which comprises a pipe layer and a resistance reducing layer embedded in the inner wall of the pipe layer, wherein the pipe layer is manufactured by the following process steps of blanking; heating; welding; heat treatment; surface treatment; the resistance reducing layer is prepared by the following process steps: preparing a water phase; preparing an oil phase; adding the prepared oil phase into an oil phase reaction kettle, introducing nitrogen to drive oxygen, dropwise adding the water phase into the oil phase, introducing nitrogen again to drive oxygen, measuring the conductivity, initiating polymerization reaction at a certain temperature when the conductivity is at a proper value, and continuously heating and preserving heat for a period of time after the initiation temperature is stable to ensure that the reaction is complete; after the reaction is finished, cooling a product, alternately precipitating a polymer by using acetone and ethanol, and drying the polymer in a drying oven to form polymer powder; the polymer powder was poured into an extruder and finally the drag reducing layer was obtained in a ring shape. The invention has the following advantages and effects: has the advantages of high dissolving speed, uniform dispersion and high resistance reduction efficiency. |
| priorityDate | 2018-10-24-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 71.