http://rdf.ncbi.nlm.nih.gov/pubchem/patent/CN-109988883-B
Outgoing Links
| Predicate | Object |
|---|---|
| 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/C22C38-002 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C22C38-60 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C21C7-0056 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C22C38-04 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C22C38-02 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C22C38-60 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C21C7-00 |
| filingDate | 2019-04-09-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| grantDate | 2021-05-07-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationDate | 2021-05-07-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | CN-109988883-B |
| titleOfInvention | Magnesium-calcium adding process method of magnesium-calcium containing non-quenched and tempered steel |
| abstract | The invention discloses a magnesium-calcium adding process method of magnesium-calcium containing non-quenched and tempered steel, which is characterized in that in the final stage of refining, after the adjustment of other components except magnesium and calcium is finished, magnesium-calcium containing core-spun yarns are added, and the steps are as follows: controlling production conditions before wire feeding, and controlling a slag layer, temperature and oxygen activity of molten steel; feeding the magnesium-calcium containing core-spun yarn, namely feeding the magnesium-calcium containing core-spun yarn at least 3 times intermittently by adopting an intermittent yarn feeding method, wherein the core-spun yarn is fed each time to account for 1/n of the total adding amount, and n is the number of times and is separated by 15-20 s; and (5) processing after the thread feeding is finished. The process of the invention has stable wire feeding process and no violent splashing; the yield of magnesium and calcium elements is high, the yield of magnesium and calcium respectively reaches more than 15 percent and 10 percent, and the production cost is low; the shape of inclusions in the steel is good; the cutting performance is excellent. The method is suitable for producing the free-cutting non-quenched and tempered steel containing magnesium and calcium, and has a high economic value in the field of the free-cutting non-quenched and tempered steel. |
| priorityDate | 2019-04-09-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 37.