http://rdf.ncbi.nlm.nih.gov/pubchem/patent/CN-111929256-B
Outgoing Links
| Predicate | Object |
|---|---|
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/G01N27-84 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/G01N29-04 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/G01N23-20091 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/G01N21-25 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/G01N23-2251 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/G01N21-25 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/G01N23-2251 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/G01N27-84 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/G01N29-04 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/G01N23-20091 |
| filingDate | 2020-08-12-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| grantDate | 2022-10-28-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationDate | 2022-10-28-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | CN-111929256-B |
| titleOfInvention | Detection and cause judgment method of inner wall cracks after surfacing welding of cross inner holes of forgings |
| abstract | The invention relates to a method for detecting and judging the causes of inner wall cracks after surfacing of a cross inner hole of a forging piece, comprising: forming a forging piece; surfacing welding of a cross inner hole of the forging piece; sampling and dissecting the workpiece, dissection and dissection; and performing ultrasonic inspection on the sampled workpiece in turn. , magnetic particle inspection, low magnification inspection, metallographic inspection, scanning electron microscope analysis, chemical composition inspection; if magnetic particle inspection and low magnification inspection find that there are multiple cracks on the inner hole surface and internal local area, the welding process should be checked; if the metallographic and Scanning electron microscope analysis of defect morphology showed that there are holes and linear defects on the surface of the inner hole or in the local area near the surface, and the linear defects and holes are connected in series, indicating that the density of the central area of the forging is not good, and the steel mill process should be found; Defects generated after welding of the inner hole wall of the cross are due to comprehensive reasons, and the material density, welding preheating, welding heat preservation or tempering timeliness should be checked. The invention has good production guiding significance. |
| priorityDate | 2020-08-12-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 25.