Process for proofing a threaded joint

Details Process for proofing a threaded joint Process for proofing a threaded joint

1989-02-24

1990-07-17

Raevis, Robert

Measuring and testing

Specimen stress or strain, or testing by stress or strain...

Threaded fastener stress

411 6, 411 8, 411369, F16B 3102

Patent

active

049413589

ABSTRACT:
A threaded fastener joint is proofed by a wrenching washer between the fasteners of the joint and the work. The wrenching washer has the clamp-up load applied by the fasteners to the work applied through it. After an attempt to make the joint, the wrenching washer is torqued to determine whether it turns on the work at an applied torque below some predetermined proofing torque. If it does not, the joint is satisfactory; if it does, the joint is unsatisfactory.

REFERENCES:
patent: 2824481 (1958-02-01), Johnson
patent: 3495907 (1970-02-01), Rogers
patent: 3759119 (1973-09-01), Wing
patent: 3803793 (1974-04-01), Dahl
patent: 4102182 (1978-07-01), Brown et al.
patent: 4295761 (1981-10-01), Hansen
patent: 4530629 (1985-07-01), Sakow

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