MTS Model 680-01 High-Temperature Grips - Manual (Page 35)

Model 680.01 High-Temperature Grips 35
Install Threaded Specimens
Perform the following procedure to mount threaded specimens in the grips.
Ensure that all grip parts are sufficiently cool before touching them.
Specimen mounting is a potentially hazardous procedure because hydraulic
pressure is applied to the system and actuator movement is required.
This can cause personal injury. It can also apply damaging forces to the
specimen, furnace, or to other fixtures.
Use extreme care while performing the following steps.
1. Determine the hydraulic pressure that must be applied to the grips in order
to adequately grip the specimen.
2. Ensure sure that the specimen adapters are clean and free of accumulated
oxide deposits.
3. Apply a liberal amount of anti-galling compound (supplied with the grips)
to the threads of both specimen adapters and to the threads of the specimen
to ensure easy removal after high-temperature operation.
4. Screw one end of the specimen into one of the specimen adapters until it
extends through the adapter.
Threaded Specimen Installation
5. Screw the specimen adapter fully into the grip extension of the upper grip.
6. While looking into the viewing port in the grip extension, screw the
specimen into the specimen adapter as required to center the end of the
specimen in the viewing port.
7. Screw the other specimen adapter fully into the extension of the lower grip.
WARNING
Upper Grip Extension
Viewing Port
Specimen Adapter
Threaded Specimen