HIGH TEMPERATURE TENSION TESTER

摘要

PURPOSE:To prevent the variations of the temperature difference portion in a high temperature testing by arranging a high temperature tank closed with a lid having a test piece mounting device inside and a dissimilar material inserted into a part of the clearance between a pull rod retaining a test piece and a sealed pressure tube. CONSTITUTION:A high temperature chamber 1 contained in an electric furnace 2 is closed with a lid 3 having a test piece mounting ring 5. A sealed pressure tube 9 with a water-cooled jacket 10 is provided outside the lid 3 while a mobile pull rod 11 is inside piercing the lid 3. A dissimilar material 13 is inserted into a part of a clearance 12 between the sealed pressure tube 9 and the pull rod 11 so as to allow a clearance with the pull rod 11. This prevents the generation of a violet convection phenomenon in the clearance 12 to check variations in the force aded to a test piece 14 and the elongation thereof with time thereby a high temperature tension testing at a high accuracy.