HACKSAWING OF TITANIUM AND TITANIUM ALLOYS
Titanium and its alloys can be hacksawed under cutting conditions adapted to the behavior of titanium. The difficulties encountered in other machining operations are also present in sawing. They include galling smearing, abrasiveness, and the generation of high temperatures in the cutting zone. During the sawing process, a tiny chip forms as each saw tooth penetrates the work. Chips gradually enlarge and curl into each tooth gullet as the blade moves through the cut. The chips remain trapped in the gullets until the teeth emerge from the kerf. At that time, chips either fall out or are flushed out by the cutting fluid directed into the cutting zone. The objectives in hacksawing include straightness of cut, smoothness of cut surface, ample cutting rates, and reasonable tool life. Appropriate selections of pitch, speeds, and feeds not only should minimize the sawing difficulties of titanium, but also should create an economic balance betwecn cutting rate and blade life. Cutting rates for titanium are about 25 to 50% lower than those associated with quenched and tempered alloy steels of equivalent hardness. Blade life in terms of productivity is about 50% lower than that with alloy steels of equivalent hardness. (auth)
- Research Organization:
- Battelle Memorial Inst. Defense Metals Information Center, Columbus, Ohio
- NSA Number:
- NSA-13-018094
- OSTI ID:
- 4261469
- Report Number(s):
- DMIC-Memo-24
- Resource Relation:
- Other Information: Orig. Receipt Date: 31-DEC-59
- Country of Publication:
- Country unknown/Code not available
- Language:
- English
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