Piercing


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piercing

[′pirs·iŋ]
(engineering)

Piercing

 

(1) An operation in forging and stamping carried out on presses and hammers to produce a hole or depression in an item by pressing a solid or hollow piercing tool or punch into the item. Piercing may also be used in preparation for subsequent hole expansion or broaching of billets on a mandrel and for preliminary marking of a through hole to be produced by subsequent punching.

(2) An operation performed with dies using a sharp-edged punch to remove the inner burr remaining in stamped objects after marking a through hole on them.

(3) An operation in the production of seamless pipe carried out on presses using a piercing tool or on piercing mills using a mandrel to obtain hollow tubing from ingots or billets.

References in periodicals archive ?
For many children, ear piercing is a rite of passage, observes Ritchie.
If your child is under 18 years of age and receives an intimate body piercing after February 1 in Wales, it is viewed as a criminal offence.
The intimate piercing of children and young people under 18 could also be considered a child protection issue.
Al examen clinico se observo en la lengua un espacio en la parte dorsal y linea media causada por el piercing; sin embargo, se presento sin el piercing a la hora de la evaluacion (Figura 1).
Baca contracted Miami, Florida-based product management services leader Innovation Direct[TM] to represent the Piercing Ammo to potential licensees for a 2 year period.
A influencia do piercing labial parece ter origem no Alaska com os esquimos e Aleutas, onde era utilizado para representar diferentes eventos na vida das pes-soas, como a passagem para a puberdade e a iniciacao no mundo da caca e do casamento (3).
It will include learning about sterilisation, disinfection, cross-contamination, the possible dangers to the circulatory and nervous systems, how to identify when a piercing is not suitable for a client and other relevant hygiene, health and safety issues.
Coun Bob Young said: "Businesses offering acupuncture, tattooing, skin colouring, cosmetic piercing or electrolysis will be properly regulated under the new byelaws."
Words from the Latin pungere have something to do with pricking or piercing. To punct ure is to pierce with something pointed.
Clinics and tattoo parlours are regulated and checked, but people can buy piercing guns over the net and use them at home.