http://rdf.ncbi.nlm.nih.gov/pubchem/patent/CN-109628962-B
Outgoing Links
| Predicate | Object |
|---|---|
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C25D7-005 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C25D3-38 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C25D3-48 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C25D3-62 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C25D3-50 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/A44C27-003 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C25D1-00 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C25D1-00 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C25D3-62 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C25D3-50 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C25D3-48 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C25D7-00 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/A44C27-00 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C25D3-38 |
| filingDate | 2019-01-21-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| grantDate | 2019-12-31-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationDate | 2019-12-31-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | CN-109628962-B |
| titleOfInvention | Preparation method of cyanide-free 18k gold ornament |
| abstract | The invention discloses a preparation method of cyanide-free 18k gold ornaments, which comprises the following steps that: printing; pressing, opening and reversing the die; carrying out alloy die holding; drilling; putting on a shelf; degreasing; first activation; copper priming; activating for the second time; plating copper 1; electrolytic degreasing; activating for the third time; preparing golden water; preparing molten copper; electroforming at 18K; plating copper 2; demolding; removing tin, bismuth and copper; removing stress; carrying out die holding; inlaying, welding and combining; polishing; cold degreasing, oil removal and electrolytic degreasing; gold plating; pure water washing; drying; quality inspection; printing, packaging and delivering to obtain the cyanogen-free 18k alloy ornament. The preparation process is simple and easy to operate, the quality of the ornament is obviously improved, the gold loss is reduced, and the preparation process does not use any cyanogen-containing toxic substance, so that the preparation process is environment-friendly and safe; the hardness and toughness of the 18k gold ornament are obviously improved, and the stability of the ornament in the wearing process is better ensured; furthermore, the electroforming solution has good stability, good dispersing capacity and good deep plating capacity, can be prepared in advance for later use, and improves the production efficiency. |
| priorityDate | 2019-01-21-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 75.