The present work researches influence of energy focusing effect to the fusion zone defects in the electron beam welding, which include fusion zone shape, welding depth, welding width, rippling and spiking. And to verify the model of welding defects base on theory and experiment. A spike is a sudden increase in penetration beyond what might be called the average penetration line. Many spikes have voids and cold shuts in their lower portions, because molten metal does not fill in completely, producing a condition similar to a cold shut in a casting. Ripples on a workpiece surface are generally associated with segregation, porosity and other microstructure defects. These become the objectives in this project.
| Identifer | oai:union.ndltd.org:NSYSU/oai:NSYSU:etd-0828108-174555 |
| Date | 28 August 2008 |
| Creators | Chuang, Kai-Cheng |
| Contributors | Han-Taw Chen, Feng-Kuang Chung, Fei-Bin Hsiao, Peng-Sheng Wei, Jiin-Yuh Jang |
| Publisher | NSYSU |
| Source Sets | NSYSU Electronic Thesis and Dissertation Archive |
| Language | Cholon |
| Detected Language | English |
| Type | text |
| Format | application/pdf |
| Source | http://etd.lib.nsysu.edu.tw/ETD-db/ETD-search/view_etd?URN=etd-0828108-174555 |
| Rights | not_available, Copyright information available at source archive |
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