CONVEYANCE RACK, METHOD FOR RETAINING METAL RING, AND METHOD FOR HEAT TREATMENT OF METAL RING

摘要

Disclosed are a conveyance rack for retaining and conveying resilience-memory metal rings and a method for retaining the metal rings. The conveyance rack is provided with a base and a plurality of retaining shafts which extend parallel to each other, being erected on the base, and which are provided with, on the side walls thereof, a plurality of protrusions abutting on the lower end surfaces of the metal rings. The protrusions abut on the lower end surfaces of the metal rings by point contact.