Patent ID: 11905196
Assignee: SHIN-ETSU QUARTZ PRODUCTS CO., LTD.
Field: Other special machines (Mechanical engineering)
Classification: CPC C  Y | IPC C

Claim 0:
1. A mold comprising:
a plurality of grooves that are concentric with respect to a mold rotation axis in at least a straight body portion of an inner surface of the mold,
wherein the plurality of concentric grooves are non-penetrating grooves that do not penetrate the mold,
the plurality of concentric grooves have a width of 0.3 mm or more and 2.5 mm or less, a depth of 0.2 mm or more and 4 mm or less, and a pitch of 3 mm or more and 20 mm or less, and
the mold is configured to manufacture a quartz glass crucible by a rotary molding method that includes blowing quartz powder onto the inner surface of the mold while rotating the mold.