http://rdf.ncbi.nlm.nih.gov/pubchem/patent/CN-103088268-B
Outgoing Links
| Predicate | Object |
|---|---|
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C22C38-46 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C23C8-66 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/B21K1-44 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/B23G1-02 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C21D9-00 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/B23P15-00 |
| filingDate | 2012-12-04-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| grantDate | 2016-05-11-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationDate | 2016-05-11-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | CN-103088268-B |
| titleOfInvention | The preparation method of fastening bolt used for automobile wheels |
| abstract | The invention discloses a kind of preparation method of fastening bolt used for automobile wheels, procedure of processing comprises: a, casting bar material, control its chemical composition content percentage as follows: C? 0.27～0.34, Mn? 0.45～0.65, V? 0.05-0.15, Si? 0.15～0.35, W? 0.01-0.04, P≤0.025, S≤0.025, Ni? 1.55～2.00, Cr? 0.65～0.95, Mo? 0.20～0.30, Cu≤0.20; B, bar material after casting do pickling processes; According to the wire diameter requirement of bolt, it is taken out to line, so that described bar material is retracted to the required wire diameter of bolt; The bar material shrinking after wire diameter is cut to the required length of bolt, at normal temperatures the bar material after cutting off is put into mold cavity, make bar material form required head and the bar portion size of bolt with upset force. The preparation method of fastening bolt used for automobile wheels of the present invention, adopt the processing of cold-extrusion technology bolt, improve the intensity of bolt, reach required hardness number, the intensity level of 12.9 high-strength bolts, solve delayed fracture and the fatigue fracture of bolt under high strength, in use connected reliably not frangibility, improve bolt life, met the user demand of social upper every profession and trade to high-strength bolt. |
| priorityDate | 2012-12-04-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 28.