PRODUCTION METHOD FOR COMPRESSOR SCROLLS, PRODUCTION DEVICE, COMPRESSOR SCROLL, AND SCROLL COMPRESSOR

摘要

A production method for compressor scrolls, whereby cavitation bubbles are caused to appropriately collide at desired locations on a scroll.　The production method includes a water jet peening step in which: cavitation bubbles formed by jetting a water jet are jetted on to one side surface of an end plate (13A) of a scroll (13), in water; and a stepped section (13Aa) and a step section (13Ba) are positioned on the outer circumferential section of the cavitation bubbles (C), in a state in which the centers (P1, P2, P3) of the cavitation bubbles are distanced from the helical center (O) of a wall (13B) in the end plate (13A).