Patent ID: 8627567
Filing Date: 2014-01-14
Classification: B23K,B23P,B29C,F28F,H01L,H05K,Y10T

Abstract:
1. A manufacturing method of liquid-cooled jacket configured to fix a seal body sealing an opening of a recess in a jacket body circulating a heat transport fluid for transmitting heat generated in a heat generating body to an outside area and having a recess, a supporting surface formed in an opening circumferential edge of the recess of the jacket body and composed of a step bottom surface with the jacket body being lower than a surface of the jacket body, and a ridge having a same surface as the supporting surface formed inside the recess, comprising steps of putting the seal body on the supporting surface and confronting a step side surface of the jacket body with an outer circumferential surface of the seal body, moving a rotary tool with a stir pin being larger than a thickness of the seal body along a butting portion between the step side surface of the jacket body and the outer circumferential surface of the seal body to form a plasticized region and friction stir welding together the seal body to the jacket body, and moving the rotary tool along the ridge on a surface of the seal body and friction stir welding together the seal body to the ridge, wherein a width of file ridge is larger than a diameter of the shoulder of the rotary tool.