http://rdf.ncbi.nlm.nih.gov/pubchem/patent/CN-111364086-B
Outgoing Links
| Predicate | Object |
|---|---|
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C25D7-04 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C25D3-12 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C25D15-00 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C25D5-02 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C25D5-10 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C25D5-02 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C25D15-00 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C25D7-04 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C25D3-12 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C25D5-10 |
| filingDate | 2020-04-20-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| grantDate | 2021-07-27-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationDate | 2021-07-27-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | CN-111364086-B |
| titleOfInvention | Nano metal ceramic electrodeposition coating of inner hole wall of petroleum drill rod and preparation method thereof |
| abstract | The invention discloses a preparation method of a nano metal ceramic electrodeposition composite coating on the inner hole wall of an oil drill pipe, which comprises the following steps: mixing nickel sulfamate, nickel sulfate, chromic anhydride, saccharin sodium, nano titanium nitride, sodium hydroxyethyl sulfonate and water, adjusting the pH value of a system to 5-5.3, and stirring to obtain a plating solution; grinding and polishing the surface of the inner hole wall of the petroleum drill rod, and then sequentially performing oil production, acid pickling activation and pre-deposition treatment; plating is carried out for one time by adopting the obtained plating solution; adding nano metal ceramic particles into the obtained plating solution, adjusting the pH value of the system to 4-4.2, and plating the product after primary plating for the second time; and washing the secondary plated product, and grinding by using a precision grinding machine to obtain the petroleum drill rod with the inner hole wall electrodeposited with the nano metal ceramic composite coating. |
| priorityDate | 2020-04-20-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 37.