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heat treatment stainless steel 304 304L 1.4301 flange

The purpose of preliminary heat treatment: to eliminate some defects in blanks and semi-finished products, and to prepare organization for subsequent cold working and final heat treatment.

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Aging treatment is mainly used to eliminate the internal stress generated in blank manufacturing and machining.
In order to avoid excessive transportation workload, for parts with general precision, an aging treatment can be arranged before finishing. However, for parts with high precision requirements (such as the box of the coordinate boring machine, etc.), two or several aging treatment procedures should be arranged. Simple parts are generally not subject to aging treatment.
In addition to castings, for some precision parts with poor rigidity (such as precision lead screws), in order to eliminate the internal stress generated during processing and stabilize the machining accuracy of the parts, multiple aging treatments are often arranged between roughing and semi-finishing. For some shaft parts, aging treatment should also be arranged after the straightening process.

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