Method for producing a valve body for an electromechanically operable valve, a valve body, and an electromechanically operable valve comprising the valve body
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United States of America Patent
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Jan 2, 2018
Issued Date -
N/A
app pub date -
Jun 2, 2014
filing date -
Aug 2, 2013
priority date (Note) -
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Abstract
A valve body for an electromechanically operable valve is produced by providing a base element with a circumferential sidewall having a first portion, a second portion, and a third portion, the sidewall being made of a ferromagnetic material and enclosing a cavity extending along a longitudinal axis. The third portion is positioned in longitudinal direction between the first portion and the second portion. A thickness of the third portion is smaller than a thickness of the first portion and the second portion. Hardening the third portion is achieved by laser heating, which transforms a material structure of the third portion into a martensitic structure. The locally decreased thickness creates a bottleneck for a magnetic flux, and a magnetic flux bypass in the valve body is reduced due to magnetic saturation; however, a structural resistance of the valve body remains high due to the laser induced hardening.
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