The present application discloses a diffusion furnace, including: a furnace tube structure including a furnace tube body and a furnace bottom, a bottom of the furnace tube body being connected to the furnace bottom to form a reaction chamber; and a carrying structure including a pedestal and a plurality of cassettes disposed on the pedestal, the pedestal being disposed on the furnace bottom. By disposing the plurality of the cassettes, a height of the furnace tube body can be decreased and a width of the furnace tube body can be increased, thus enlarging a space of equipment repair and maintenance, which is favorable for the repair and maintenance of the equipment.

A shield covers a predetermined region of a plate workpiece during tempering of the plate workpiece in a furnace in which the shield and the workpiece are subjected to an austenitization temperature while the predetermined region of the plate is shielded by the shield against heat. The shield has at least one first shield part shaped to cover at least some of the predetermined region of the workpiece, at least one second shield part, and a fastener or the like securing the second part movably relative to or removable from the first part such that the first and second parts together achieve an optimum shape fully covering and shielding the predetermined region of the plate workpiece.

A heating station (1) for heating a metal sheet blank (50) and a system comprising such a heating station (1), is herein disclosed. In particular, the heating station comprises lower or upper heating elements (11) arranged in a heating chamber (10) below a metal sheet blank (50) when in a heating position, and configured to provide radiation heating towards the metal sheet blank (50), and a lower mask (14) arranged to block radiation heating from reaching at least a first portion of the metal sheet blank (50), wherein the lower mask (14) comprises a plurality of support projections (14d) projecting from a main surface (14a) of the lower mask (14) towards the metal sheet blank (50) when in a heating position, which support projections (14d) are configured to support a metal sheet blank (50) during heating thereof.

A refractory article including a body having central opening extending through at least a portion of the body, the central opening having a receiving surface having a convex curvature. In an embodiment, the body can include a coupling protrusion extending from a portion of an upper surface of the body and a coupling depression on a portion of a bottom surface of the body.

A container for storing a powder mixture during heat treatment in a furnace, a furnace and a method for heat treatment of a powder mixture. The aim of the invention is to specify a container by means of which in particular the throughput per unit of time can be increased and an automatic removal of the container is simplified. This aim is achieved by a plurality of receptacles for releasable fastening of spacers which in the installed state allow contactless stacking of a plurality of containers one above the other.

A multi-opening oven assembly for simultaneously heating a plurality of blanks, for example aluminum blanks, before forming the heated blanks in a production line is provided. The oven assembly includes vertically aligned shelves to present a plurality of chambers for heating the blanks. A table including an entry side platform and an exit side platform moves vertically along the oven assembly. A rail system extends along the platforms and the shelves to convey the blanks in and out of the chambers. Once one set of heated blanks is removed from a first chamber, the table moves vertically to a second chamber and is ready to receive the next set of heated blanks. A continuous supply of heated blanks is provided for high throughput. The oven assembly is preferably disposed in a press adjacent a forming station of an existing production line and thus, no additional floor space is required.

A multi-opening oven assembly for simultaneously heating a plurality of blanks, for example aluminum blanks, before forming the heated blanks in a production line is provided. The oven assembly includes vertically aligned shelves to present a plurality of chambers for heating the blanks. A table including an entry side platform and an exit side platform moves vertically along the oven assembly. A rail system extends along the platforms and the shelves to convey the blanks in and out of the chambers. Once one set of heated blanks is removed from a first chamber, the table moves vertically to a second chamber and is ready to receive the next set of heated blanks. A continuous supply of heated blanks is provided for high throughput. The oven assembly is preferably disposed in a press adjacent a forming station of an existing production line and thus, no additional floor space is required.

The present invention provides a far-infrared radiation heating furnace for steel sheets for hot stamping configured to inhibit thermal deformation of the furnace body and furnace body parts. A far-infrared radiation heating furnace (10) includes heating units (13-1) to (13-6), a ceiling unit (19), and a furnace body frame (12) made of steel, the heating units including: blocks made of a thermal insulation material, the blocks being disposed around horizontal planes of spaces for accommodating the steel sheets for hot stamping; and far-infrared radiation heaters positioned above and below the steel sheets for hot stamping to heat the steel sheets for hot stamping, the furnace body frame being disposed around the heating units and the ceiling unit. The furnace body frame includes spacers (17-1) to (17-7) that space the heating units and the ceiling unit apart from the furnace body frame and support them.

The present invention provides a far-infrared radiation heating furnace for steel sheets for hot stamping configured to inhibit thermal deformation of the furnace body and furnace body parts. A far-infrared radiation heating furnace (10) includes heating units (13-1) to (13-6), a ceiling unit (19), and a furnace body frame (12) made of steel, the heating units including: blocks made of a thermal insulation material, the blocks being disposed around horizontal planes of spaces for accommodating the steel sheets for hot stamping; and far-infrared radiation heaters positioned above and below the steel sheets for hot stamping to heat the steel sheets for hot stamping, the furnace body frame being disposed around the heating units and the ceiling unit. The furnace body frame includes spacers (17-1) to (17-7) that space the heating units and the ceiling unit apart from the furnace body frame and support them.

A transport tray for transporting and heating chemical substances, includes a one-piece support structure with a base and a frame fixedly connected thereto, wherein the support structure supports a lining of a tray-shaped cavity for accommodating the chemical substances, wherein the lining includes a base plate lying on the base and multiple frame plates clamped against the frame, wherein the lining is supported by the support structure such that the thermal expansions of the base plate and the frame plates in their plate planes are not impeded.