| Zirconium Processing |
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| Serial Number | Technology | Process Description |
|---|
| 1 | ingot casting inspection | composition reinspection, appearance inspection |
| 2 | β forging | heated in furnace under temperature of 1030-1050˚C, insulated for 60 to 90 min, water quenching |
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| 3 | drilling, boring, copper lad set |
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| 4 | extruding | line frequency induction furnace heat to 750-780˚C, insulated for 30 to 35 min, extruding on 3150t extruding machine |
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| 5 | tube billets repair |
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| 6 | cold rolling and intermediate annealing | rolling after 3-4 times, intermediate annealing at 700˚C, insulated for 1h, vacuum degree 10-2Pa-10-3Pa |
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| 7 | precision rolling | precision rolling after 3-4 times. General working rate over 70%, Q data is 3-5 |
| 8 | finishing annealing | recrystallization annealing: 545+/-5˚C, insulated 2h. stress relief annealing: 460+/-5˚C, insulated 3h |
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| 9 | straightening | on roller leveler |
| 10 | inner surface acid wash | use flowing acid |
| 11 | outer surface polishing | use abrasive belt |
| 12 | dimension inspection |
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| 13 | property inspection |
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| 14 | packing |
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