FRONT AXLE BEAM AND PRODUCTION METHOD THEREOF
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United States of America
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Issued Date -
Jan 23, 2020
app pub date -
Apr 3, 2018
filing date -
Apr 3, 2018
priority date (Note) -
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status (Latency Note)
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Abstract
The production method includes a first step, a second step and a third step. In the first step, a steel material is forged by dies, whereby a forged product including a rough web part and four plate-shaped rough flange parts is produced. In the second step, at least one specified rough flange part, which is at least one of the four rough flange parts, is pressed by a first die, whereby a first bent portion bending outward in an up-down direction is formed in the specified rough flange part. In the third step, the edge of the first bent portion is pressed by a second die inward in the up-down direction, whereby the edge is deformed and a second bent portion is formed. In the third step, the edge of the specified flange part is deformed while the edge is kept from deforming in a front-rear direction.
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