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The Book of Terms

The Book of TermsThe WJI Book of Wire & Cable Terms: an interactive experience of learning and sharing
This book, written by industry volunteers and containing more than 5,000 entries, is an asset for newcomers to wire and cable.

At the same time, it also represents an opportunity for industry veterans to give back by either updating or adding to the more than 5,000 entries. This is an honor system process. Entries/updates must be non-commercial, and any deemed not to be so will be removed. Share your expertise as part of this legacy project to help those who will follow. Purchase a printed copy here.


 

All   0-9   A B C D E F G H I J K L M N O P Q R S T U V W X Y Z

Quench, Thermoplastics

A process of shock cooling thermoplastic materials from the molten state. Can be gradient or consistent cooling.

Quench, Tower Chamber

A compartment in a rod rolling operation where quenching is controlled to produce the characteristics necessary for the finished product.

Quenching

The cooling of a heated metal through its transformation range, usually by immersing it in a liquid such as oil, water, molten salt or lead. Quenching is an integral part of most processes for the hardening of steel. Except for gas, it is essential that the cooling medium be controlled at a specified temperature and the material be immersed until it has attained the quench temperature throughout its mass. See Patenting and Patenting, Lead. When applicable, the following more specific terms are used: direct quenching, fog quenching, hot quenching, interrupted quenching, selective quenching, spray quenching and time quenching.

Quenching Crack

A fracture resulting from thermal stresses induced during rapid cooling or quenching. The fracture could be caused by poor quenching fluid temperature control where the fluid may be too cold.

Quenching, Double Cascade

After austenitizing, steel rod is prequenched in a salt bath at a temperature just over the Ms point. It is then transformed in a second salt bath at a temperature around 510°C, both baths in tandem. Approximate isothermal transformation is said to take place, providing a fine even structure and, consequently, high tensile strength, higher ductility for a given strength and improved fatigue properties.

Quick Color Change Tooling

A category of cable extrusion head tooling that provides nearly instantaneous color changes. The tooling allows several extruders, each processing a different color material, to feed into head. Internal valves redirect the flow from one extruder to another to make either base color changes and/or stripe color changes.

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