DESCALING AND CLEANING OF TITANIUM AND TITANIUM ALLOYS
Technical Report
·
OSTI ID:4306804
A suryey of the present commercial practices for descaling titanium and titanium alloys is presented. Scales formed on titanium and titanium alloys that have been heatod in air at temperatures up to about 11OO deg F are generaily removed by acid pickle baths. More drastic treatment is usually required when the metal is heated in air to temperatures in excess of 11OO deg F. Titanium with scales formed above 11OO deg F requires treatment in a molten-salt bath, which may utilize an electric current, followed by pickling in a suitable acid solution. Proprietary descaling methods are discussed to the extent that such information is available. Other methods currently in use to clean the surface inciude sand, grit, and vapor blasting, and a softening treatment in aqueous caustic, similar in sequence to the molten-salt bath. Descaling practices at the major producers of mill products, such as titanium billet, bars, plate, and especially sheet, have been discussed in detail. The data are discussed generally, conclusions given, and recommendations made for further research. (auth)
- Research Organization:
- Battelle Memorial Inst. Titanium Metallurgical Lab., Columbus, Ohio
- NSA Number:
- NSA-12-007263
- OSTI ID:
- 4306804
- Report Number(s):
- TML-96
- Country of Publication:
- United States
- Language:
- English
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