HOLDING JIG FOR WIRE TENSILE TEST AND WINDING METHOD FOR WIRE TEST PIECE

摘要

PROBLEM TO BE SOLVED: To use a test piece of a compact size up to 1000°C without requiring a long test piece by boring a side hole on a big round bar, inserting two small round bars into it, boring a slit perpendicularly to the side hole, and guiding the end section of a wound wire test piece to the outside. ;SOLUTION: A side hole is bored on a big round bar, two small round bars are inserted into it, a slit is bored perpendicularly to the side hole, and a wound wire is guided to the outside to form a holding jig with a simple structure. This holding jig can be machined in an optional size, it can be easily manufactured with a hard heat-resistant alloy in a small size, and it can be manufactured for a high-temperature test in a small electric furnace. When the wire is pulled in three directions, a small round bar 1 is rotated CCW, a small round bar 1 is rotated CW, the wire is pressed in the direction of a free end 4, and it is tightened more strongly. The end of the wire is not required to be fixed, there is no possibility that the wire is broken from the fixed end, thereby accurate data can be obtained.;COPYRIGHT: (C)1999,JPO