Cryogenic Valve

Comprehensive Analysis on the Effect of Deep Cryogenic Treatment on The Mechanical Behaviour of Martensitic Valve steel

The behaviour of the cryogenically treated En52 martensitic valve steel has been experimentally analyzed in this paper. Material samples are subjected to deep cryogenic treatment after completing the regular heat treatment. The critical properties of the valve steel like wear resistance, hardness, tensile strength and impact strength are evaluated for the cryo treated En52 valve steel samples a...

ANTERIOR URETHRAL VALVE ASSOCIATED WITH POSTERIOR URETHRAL VALVE

A rare case of anterior urethral valve in association with posterior urethral valuve is reported. Clinical findings are discussed, and the available literature will be briefly reviewed.

Receiver Cryogenic System

Cryogenic Model Materials

An overview and status of current activities seeking alternatives to 200 grade 18Ni Steel CVM alloy for cryogenic wind tunnel models is presented. Specific improvements in material selection have been researched including availability, strength, fracture toughness and potential for use in transonic wind tunnel testing. Potential benefits from utilizing damage tolerant life-prediction methods, r...

A Cryogenic Data

A computer storage system which is addressed by content rather than location is described. The design has been verified by constructing and successfully operating a three-word module consisti~g of 81 crossed-film cryotrons on a 6-inch by 3-inch substrate.