Hot On-line Wall Thickness Gage System for Seamless Tubes
نویسندگان
چکیده
منابع مشابه
Controlling the wall thickness and composition of hollow precipitation tubes.
We investigate the growth of self-organized tubes formed by injection of metal salt solutions into silicate solution. The wall thickness increases strictly in an inward direction and obeys square root functions suggesting the presence of a traveling reaction-diffusion front in the radial direction. We also demonstrate the construction of multi-layered tubes.
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Cold drawing process is one of the most used metals forming processes in industries for forming seamless tubes. This process of plastic deformation of metals occurs below the recrystallization temperature and is generally performed at room temperature. When metal is cold worked, upon the release of forming force, the springback occurs. In this paper, the springback effect of the seamless tube t...
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Numerical solutions have been obtained for the exact equations describing the propagation of periodic axisymmetric waves in a rigid cylindrical tube. Results were obtained for air over a range of conditions corresponding to shear wave numbers (s = Rm) from 0.2 to 5000 and reduced frequencies (k = oR/a) from 0.01 to 6. For conciseness and convenient application, the results for the attenuation a...
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Direct tracheoscopy was employed to assess tracheal damage following prolonged intubation. Comparison of conventional and low-pressure cuffs showed that there was less trauma from the low-pressure cuff. Comparison of tube sizes showed a reduction in injury with 8-mm diameter tubes compared with larger ones. Knowledge of tracheal damage following prolonged endotracheal intubation has depended hi...
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ژورنال
عنوان ژورنال: Tetsu-to-Hagane
سال: 1984
ISSN: 0021-1575,1883-2954
DOI: 10.2355/tetsutohagane1955.70.9_1139