http://rdf.ncbi.nlm.nih.gov/pubchem/patent/CN-114523606-B
Outgoing Links
| Predicate | Object |
|---|---|
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/F04B53-14 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B29C39-10 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B29C39-22 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B29C39-44 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B29C39-38 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/B29C39-10 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/B29C39-22 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/F04B53-14 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/B29C39-44 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/B29C39-38 |
| filingDate | 2022-04-24-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| grantDate | 2022-07-22-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationDate | 2022-07-22-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | CN-114523606-B |
| titleOfInvention | Double hardness piston for mud pump and preparation method thereof |
| abstract | The invention provides a dual-hardness piston for a mud pump and a preparation method thereof, which specifically include: heating, defoaming, and adding a first raw material to a root material according to a first process flow, and pouring the treated root material into piston steel At the root of the core, the first root temperature value of the root material is obtained, and the second root temperature value of the root material is obtained after a first preset time; the heating layer is controlled to pour according to the first heating temperature value. The mold is heated and treated; the skirt material is heated, degassed and treated with the addition of the second raw material according to the second process flow, and the treated skirt material is poured to the skirt of the piston steel core; the heating device is controlled according to the first The heating temperature value is used to heat the first heating time; after the first heating time, the heating of the heating layer is stopped, and after the second preset time, the piston steel core for pouring the root material and the skirt material is demolded and vulcanized. |
| priorityDate | 2022-04-24-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 22.