Method of producing a fluid injection valve

Details Method of producing a fluid injection valve Method of producing a fluid injection valve

1995-02-16

1997-12-16

Cuda, Irene

Metal working

Method of mechanical manufacture

Gas and water specific plumbing component making

29890124, 29890128, 29890132, B23P 1500

Patent

active

056971540

ABSTRACT:
A fluid injection valve in which an orifice plate is produced by defining surfaces of walls forming an orifice on a plate-like basic material by pressing with a punch, forming a protective layer on a surface of the basic material, grinding a surface of the basic material to form an opening portion of the orifice at a predetermined opening value by measuring an amount of light passing through the orifice, and removing the protective layer in a tank filled with weak hydrochloric acid. It is possible to manufacture a fluid injection valve which has excellent fluid injection characteristics and injection quantity adjustment easily and with less expense.

REFERENCES:
patent: 4733823 (1988-03-01), Waggener et al.
patent: 4808260 (1989-02-01), Sickafus et al.
patent: 5239751 (1993-08-01), Kanamaru et al.

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