Boat for heat treatment and vertical heat treatment apparatus
OwnerShinji Irie, Hirofumi Sakaiinventors
Life of this patent
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Abstract
A plurality of side posts (12) and a plurality of rear posts (13) are disposed on the opposite sides S and on the rear side R of the workpiece (W), respectively. The side posts (12) and the rear posts (13) are provided with grooves (14, 15) having workpiece support surfaces (14a, 15a) and formed at predetermined vertical intervals, respectively. Each support surface of each side posts (12) is formed in a wide width and extends along the circumference of the workpiece from the center axis C of the workpiece toward the front side F on the front side of the workpiece (W). Each of the support surfaces (14a, 15a) of the posts (12, 13) inclines down toward the center axis C of the workpiece.
Claims16
A boat for heat treatment for holding workpieces, comprises:
- a plurality of posts including at least side posts disposed at side positions on opposite sides of workpieces and rear posts disposed at positions on a rear side of the workpieces;
- wherein each of the posts is provided with grooves having support surfaces on which the workpieces are seated, and formed at predetermined vertical intervals,
- each of the support surfaces of each of the side posts extends along the circumference of the workpiece toward the front side on the front side of the workpiece, and
- each of the support surfaces of the posts inclines down toward the center axis of the workpiece.
A vertical heat treatment apparatus comprising a boat for heat treatment for holding workpieces;
- wherein the boat is comprises a plurality of posts including at least side posts disposed at side positions on opposite sides of workpieces and rear posts disposed at positions on a rear side of the workpieces,
- each of the posts is provided with grooves having support surfaces on which the workpieces are seated, and formed at predetermined vertical intervals,
- each of the support surfaces of each of the side posts extends along the circumference of the workpiece toward the front side on the front side of the workpiece, and
- each of the support surfaces of the posts inclines down toward the center axis of the workpiece.
Dependencies are inferred from the claim text.