“Raising (metalworking)”的意思、由来-开放百科全书

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Raising (metalworking)

释义

References
Bibliography

{{inline|date=November 2008}}Raising is a metalworking technique whereby sheet metal is depressed in a stump or other solid object by repeated 'courses' of hammering and annealing. A Sheet metal worker is often required to raise, or bump, the work into form from the flat metal, by means of a raising hammer and raising block. The raising block is made from substance giving resistance to the blows.^[1]

A modern term is Synclastic raising, the dominant curves of the object being forged are at right angles and move in the same direction; as in a bowl. This results in a surface possessing elliptic geometry.

Anticlastic raising, on the other hand, refers to shaping an object where the dominant axes move in opposite directions; a familiar example of this is a potato chip. This results in a surface possessing hyperbolic geometry.

References

1. ^{{cite book|last1=Broemel|first1=L.|title=Sheet metal workers' manual; a complete, practical instruction book on the sheet metal industry, machinery and tools, and related subjects, including the oxy-acetylen welding and cutting process,|date=1918|publisher=Drake|location=Chicago}}

Bibliography

Finegold, Rupert and William Seitz. Silversmithing. Krause; 1983. {{ISBN|0-8019-7232-9}}

1 : Metal forming

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