http://rdf.ncbi.nlm.nih.gov/pubchem/patent/CN-109590461-B
Outgoing Links
| Predicate | Object |
|---|---|
| classificationCPCAdditional | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/H01F1-0577 |
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B33Y10-00 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/H01F1-0577 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B33Y70-00 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B22F1-16 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B22F3-1007 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B22F3-04 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B22F3-22 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/H01F41-0253 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/B33Y70-00 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/B22F3-10 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/B22F1-02 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/B22F3-22 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/B33Y10-00 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/B22F3-04 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/H01F1-057 |
| filingDate | 2019-01-08-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| grantDate | 2020-03-31-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationDate | 2020-03-31-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | CN-109590461-B |
| titleOfInvention | A method for preparing sintered NdFeB magnets by 3D cold printing |
| abstract | The invention provides a method for preparing a sintered NdFeB magnet by 3D cold printing, which belongs to the field of powder metallurgy. The surface of the NdFeB magnetic powder is coated with an oxygen-free organic film to prevent the magnetic powder from being oxidized during the 3D cold printing process. At the same time, a low molecular weight and low oxygen gel system is used to prepare the printing paste. After printing and orientation forming, after cold isostatic pressing and sintering, sintered NdFeB parts with complex shapes are finally obtained. The surface of the easily oxidized NdFeB magnetic powder is coated with an oxygen-free organic substance to control the oxidation problem of the magnetic powder during the forming process, and a low molecular weight and low oxygen gel system is used to prepare 3D cold printed NdFeB slurry. control the oxygenation of the magnet during the forming process. The sintered NdFeB magnet prepared by the invention has good magnetic properties, and can realize near-net shape of various complex shapes, saves the machining of complex parts of the magnet, greatly reduces production cost and saves resources. |
| priorityDate | 2019-01-08-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 48.