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chill

1. a feverish cold
2. a metal plate placed in a sand mould to accelerate cooling and control local grain growth

Chill

 

a sensation of cold that is caused by spasms of the superficial blood vessels. Chill is also accompanied by skin-muscle spasms, a phenomenon known as gooseflesh, and by muscle tremors, which arise mostly in the masticatory muscles and also in the muscles of the shoulder girdle, spine, and extremities. Chill often occurs as fever begins to rise in many pathological conditions, including traumas and infections. While experiencing chill, the body loses heat at a lower rate and produces heat at a higher rate; the increased heat production is due to muscle contraction, and after the body temperature rises, the chill usually ceases. Chill also occurs at the height of a fever if the body temperature fluctuates sharply.

Nervous, as opposed to physiological, chill is only a subjective sensation that occurs, for example, in neuroses. Chill is a normal protective reaction in response to exposure to cold. It can also occur in excitable persons under conditions of fear or agitation.

chill

[chil]
(metallurgy)
A metal plate inserted in the surface of a sand mold or placed in the mold cavity to rapidly cool and solidify the casting, producing a hard surface.
White or mottled iron occurring on the surface of a rapidly cooled gray iron casting.

CHILL

References in periodicals archive ?
The results show the cast iron chills produced equivalent or smaller SDAS than the composite chills, and the SDAS was more uniform across the plate width in the cast iron chill samples.
However, since the ultimate tensile and yield values were comparable, the differences in the two chill regimes were insignificant and outweighed by the potential added complexity of using the composite chills.
For example, some might argue that in the campaign setting, it is necessary to protect even deliberate lies, because any prospect of state adjudication of truth would create an impermissible chill.
Chills were embedded into the wall of the mold facing the mold cavity.
The first series of solidification analysis of the test casting was conducted without fins or chills to establish baseline data for further comparisons.
External chills are shapes usually made of steel, iron, graphite, chromite or copper.
External chills are used effectively at junctions or other portions of the casting that are difficult to feed with risers.
When these situations arise, the ductile iron producer can and should resurrect the chill wedge.
Since most ductile iron foundries have the equipment necessary to check metal chemistries, the chill wedge is not needed to check for carbon equivalent.
The foundry eventually eliminated the chills in the cope by mounting a chill fin on top of each of the bolt mounts (Fig.
Chills, which are separate from the casting, are often inaccurately placed and can be forgotten in the mold building process.
Eat nutritious food and wear warm clothes to ward off winter chill