Coining - hot stamping

Japanese: 圧印加工 - あついんかこう
Coining - hot stamping

… [Arata Kisugi]
[Manufacturing of currency]
Most metal coins were produced by casting, so coining originally meant "the casting of money." However, nowadays coins and medals are produced by the pressing process, and this process is called coining. This is a type of forging process in which the pattern of the punch and die faces is transferred to a thin metal disk by compression, and the metal disk is sealed between the punch and die, so no material escapes and no burrs are produced.

From [Plastic processing]

...Pots and kettles are made by a method called spinning, in which a thin sheet of metal is placed on a potter's wheel and pressed with a spatula to squeeze it into shape. Money used to be minted coins, but today it is forged by stamping a thin sheet of metal with a press, a process called coining. The exterior and interior panels of automobiles, and stainless steel and enamel bathtubs are almost all made by pressing thin sheet of metal into shape.

*Some of the terminology that refers to "coating" is listed below.

Source | Heibonsha World Encyclopedia 2nd Edition | Information

Japanese:

…【来生 新】
【貨幣の製造】
 金属貨幣はほとんどが鋳造で製造されていたため,コイニングcoiningとは〈貨幣の鋳造〉という意味であった。しかし現在ではコインやメダルなどは圧印加工で製造され,この加工法をコイニングとよんでいる。これは,薄肉の金属円板にポンチとダイ面の模様を圧縮によって写し出す鍛造加工の一種で,金属円板はポンチとダイの間に密閉して加工されるので,材料が外に逃げたり,ばりは生じない。…

【塑性加工】より

…なべややかんの類は薄板をろくろにのせ,へらで押しながら絞って形を作るスピニングという方法によって製造される。貨幣は昔は鋳造された鋳貨であったが,今日では薄板をプレスで刻印して造る鍛造貨幣であり,この加工法を圧印加工coinningと呼んでいる。自動車の外板や内装,ステンレス鋼やホウロウの浴槽などはほとんど薄板をプレスで成形して製造されている。…

※「圧印加工」について言及している用語解説の一部を掲載しています。

出典|株式会社平凡社世界大百科事典 第2版について | 情報

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