公开(公告)号：US3775043A

公开(公告)日：1973-11-27

申请号：US3775043D

申请日：1972-03-13

Applicant: ASEA AB

Inventor： JOHANSSON P ,  LANDA T ,  LARKER H

IPC: B01J3/04 ,  B22F3/15 ,  B30B11/30 ,  F27D3/18 ,  F27B3/18

CPC classification number: B30B11/002 ,  B01J3/048 ,  B22F3/15 ,  F27D3/18

Abstract: A furnace for vacuum-pressure-sintering has a furnace chamber which is enclosed in and insulated from a surrounding pressure chamber. The pressure chamber includes a bottom projecting into it at the lower end and has at the upper end a charging opening and a lid projecting into the charging opening. A housing can be applied over the charging opening and connected to a vacuum pump during the part of the operating cycle when the pressure in the furnace is to be below atmospheric pressure. The lid is formed of an outer annular part and an inner part, separate from each other, the outer annular part remaining in position when the inner part is removed. A heat radiation protection ring is provided for insertion into the opening into the annular part when the annular part is raised. A lifting device for the lid is provided inside the housing.

Abstract translation: 用于真空压力烧结的炉具有封闭在周围的压力室中并与其隔离的炉室。 压力室包括在下端突出到其中的底部，并且在上端具有充电开口和突出到充电开口中的盖子。 当炉中的压力低于大气压力时，壳体可以在充电开口上施加并且在操作循环的一部分期间连接到真空泵。