http://rdf.ncbi.nlm.nih.gov/pubchem/patent/CN-110144577-B
Outgoing Links
| Predicate | Object |
|---|---|
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C23C22-73 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C23C22-73 |
| filingDate | 2019-06-24-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| grantDate | 2021-06-11-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationDate | 2021-06-11-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | CN-110144577-B |
| titleOfInvention | Medium carbon alloy steel bolt metal phosphorus-free leather film treatment method |
| abstract | The invention discloses a method for treating a metal phosphorus-free leather film of a medium-carbon alloy steel bolt. The method can reduce the rejection rate of the processed product, further improve the production efficiency, and has the advantages of simple structure and convenient use. The method comprises the following steps: firstly, the method comprises the following steps: acid washing: placing the processed bolt into a pickling tank containing an acid lotion, and stirring and pickling at normal temperature until oxide skin on the surface of the bolt is removed, wherein the surface of the bolt is silvery white; II, secondly: washing for 0.5-1 minute for the first time; thirdly, the method comprises the following steps: washing for 0.5-1 min; fourthly, the method comprises the following steps: washing for 0.5-1 minute for the third time; fifthly: and (3) film treatment: placing the bolts washed by the water for the third time into a membrane treatment pool, treating the bolts by using a phosphorus-free membrane treatment solution at the temperature of 80-90 ℃ for 18-20 minutes, taking out the bolts after the surfaces of the bolts are brownish red, and naturally drying the bolts in a normal-temperature drying environment; sixthly, the method comprises the following steps: lubrication: soaking the dried bolt in LUB-21 lubricant at 75-85 deg.C for 0.5-1 min, and taking out. |
| priorityDate | 2019-06-24-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 19.