http://rdf.ncbi.nlm.nih.gov/pubchem/patent/CN-108393419-B
Outgoing Links
| Predicate | Object |
|---|---|
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B21H1-16 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B21B45-0203 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/B21B45-02 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/B21H1-16 |
| filingDate | 2018-03-29-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| grantDate | 2019-10-25-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationDate | 2019-10-25-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | CN-108393419-B |
| titleOfInvention | A kind of manufacturing method promoting bearing steel ball performance |
| abstract | The present invention relates to hot rollings to shape Field of Heat-treatment, and a kind of manufacturing method promoting bearing steel ball performance includes the following steps: step 1；Rod iron is heated to austenitizing temperatures above, steel ball is shaped by the first oblique milling roller single direction rotation hot rolling；Step 2；When the deflection of the steel ball hot rolling in step 1 to 50% ~ 70%, steel ball stick is transferred on the second oblique milling roller and continues single direction rotation rolling, the oblique milling direction of the second oblique milling roller is contrary with the oblique milling of the first oblique milling roller, and roll inclination angle is identical；Step 3: the steel ball that hot rolling shapes being cooled down rapidly, is quickly reduced to steel ball core and skin temperature between 500 DEG C ~ 600 DEG C；Step 4: it is air-cooled that steel ball obtained in step 3 being taken out into progress.On the one hand the manufacturing method improves steel ball surface layer grain degree of refinement to realize grain ultrafining, reduce moulding damage；On the other hand, the temperature range of net carbide generation is avoided by being quickly cooled down steel ball, eliminates net carbide. |
| priorityDate | 2018-03-29-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
| Predicate | Subject |
|---|---|
| isDiscussedBy | http://rdf.ncbi.nlm.nih.gov/pubchem/substance/SID419512635 http://rdf.ncbi.nlm.nih.gov/pubchem/compound/CID962 |
Total number of triples: 14.