http://rdf.ncbi.nlm.nih.gov/pubchem/patent/KR-101511884-B1
Outgoing Links
| Predicate | Object |
|---|---|
| classificationCPCAdditional | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/F16D2200-003 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/F16D2125-06 |
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B21K21-14 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B21J13-02 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B21K1-18 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B21J5-06 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C22F1-04 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B21K21-06 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B21C23-186 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B21D22-02 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/B21J5-06 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/B21J13-02 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/B21K21-14 |
| filingDate | 2011-12-19^^<http://www.w3.org/2001/XMLSchema#date> |
| grantDate | 2015-04-13^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationDate | 2015-04-13^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | KR-101511884-B1 |
| titleOfInvention | Punch for cold backward extrusion forging, cold backward extrusion forging device, production method of shaped member for brake piston, production method of brake piston and production method of closed-end cylindrical forged product |
| abstract | According to the present invention, the punch 1 is provided with a forming land portion 2 formed in parallel with the punch shaft 7, and a forming land portion 2 formed in a shape of a circular arc having a cross section formed by connecting to the forming land portion 2 at the tip end side of the forming land portion 2 And a relief portion 5 formed on the proximal end side of the forming land portion 2 and having a smaller diameter than the forming land portion 2. The Rockwell hardness HRF of the material 20 is in the range of 65 to 105. The radius of curvature R of the forming R part 3 of the punch 1 is larger than the thickness L of the cylindrical main wall part 21 of the forged product 25. [ The length B of the forming land portion 2 of the punch 1 is in the range of 0.05 to 0.15 mm. The relief width C of the relief portion 5 of the punch 1 with respect to the forming land portion 2 is within the range of 0.15 to 1.0 mm. |
| priorityDate | 2010-12-20^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
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