Self-heating forming method for profile depression

The invention provides a self-heating forming method for profile depression which comprises following steps: the profile is placed on lower pressing plates on both sides, and insulation arrangement isbetween the profile and the lower pressing plates on both sides; the lower pressing plates on both side are driven upward until that upper pressing plates on both sides contact the profile; power isturned on between the upper pressing plates on both sides, the profile is automatically energized and heated, and the temperature rises; an upper mold and a lower mold are placed on the upper and lower sides of the profile and closed, and the profile is extruded through the upper mold and the lower mold; the upper mold is separated from the lower mold; the lower pressing plates on both sides are driven downwards, so that the upper pressing plates on both sides are separated from the profiles, and the power is automatically cut off; and the parts are removed. 本发明提供种型材压下陷的自加热成形方法，包括步骤：将型材放置到两侧下压板上，型材和两侧下压板之间绝缘布置；使两侧下压板上行