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Stamping (also known as pressing) is the process of placing flat sheet metal in either blank or coil form into a stamping press where a tool and die surface forms the metal into a net shape. Stamping includes a variety of sheet-metal forming manufacturing processes, such as punching using a machine press or stamping press , blanking, embossing ...
The whole process of OSP manufacture was complex and involved a number of techniques. Die stamping was used extensively for shaping the basic sheets of OSP and also for forming small parts such as feet and handles. The manufacture of plated wire was another important technique, involving coating a circular rod of copper with silver. This could ...
Other terms often used for printed engravings are copper engraving, copper-plate engraving or line engraving. Steel engraving is the same technique, on steel or steel-faced plates, and was mostly used for banknotes, illustrations for books, magazines and reproductive prints, letterheads and similar uses from about 1790 to the early 20th century, when the technique became less popular, except ...
The oldest archaeological evidence of copper mining and working was the discovery of a copper pendant in northern Iraq from 8,700 BCE. [2] The earliest substantiated and dated evidence of metalworking in the Americas was the processing of copper in Wisconsin, near Lake Michigan. Copper was hammered until it became brittle, then heated so it ...
In antiquity, copper's durability and resistance to rust or corrosion proved valuable. Copper's relationship with man is thought to date back over six thousand years. [1] Coppersmith is one of the few trades that have a mention in the Bible. [2] Copper was particularly worked in England, with ores smelted in Wales as early as the 1500s.
Repoussé (French: ⓘ) or repoussage (ⓘ) is a metalworking technique in which a malleable metal is shaped by hammering from the reverse side to create a design in low relief. Chasing (French: ciselure) or embossing is a similar technique in which the piece is hammered on the front side, sinking the metal. The two techniques are often used in ...
In a number of modern variants such as microfabrication etching and photochemical milling, it is a crucial technique in modern technology, including circuit boards. In traditional pure etching, a metal plate (usually of copper, zinc or steel) is covered with a waxy ground which is resistant to acid. [2]
A stamped circuit board (SCB) is used to mechanically support and electrically connect electronic components using conductive pathways, tracks or traces etched from copper sheets laminated onto a non-conductive substrate. This technology is used for small circuits, for instance in the production of LEDs. [1]