Abstract: The prior art discloses machines which, for cooling the surface to be machined, have a gas supply line which opens into a gas outlet which is in the direct vicinity of the polishing disk. When CO.sub.2 is used as cooling gas, stoppages, which can be traced back to snow formation of the CO.sub.2, may occur in the line and in the gas outlet. In order to avoid blockages, the machine is assigned means for the supply of the liquid or supercritical CO.sub.2 which comprise a valve for regulating the throughflow quantity of the CO.sub.2 with an expansion nozzle, the valve being arranged inside the machine.

Abstract: The invention is directed to an oven installation as intermediate storage between the non-mandrel type coiling device for the strip-shaped slab located downstream of a thin-slab casting installation and its uncoiling device corresponding to the rolling mill downstream.

Abstract: The invention provides an apparatus for enabling stock washing liquor to be prepared from washing-agent powder taken directly from the powder container containing it, without producing any dust, and to store the liquor thus prepared for supply to at least one industrial wet vacuum cleaner. The apparatus includes a tub-shaped bottom section and a top section which is hermetically mounted on the bottom section. A suction line leads into the container, the end remote from the container being inserted into the powder in the powder container. A fresh-water line also terminates in the container. The water is directed onto the stream of powder passing through the suction line. A stock-liquor feed line is operatively linked to a pump to permit liquor to be pumped from an inlet near the floor of the container and out of the container.

Abstract: An apparatus for preparing a stock wash liquor includes a stock liquor container with a stock liquor container comprising a tub-shaped bottom section and a top section which is hermetically mounted on the bottom section and is fitted with an integral suction fan designed to generate an underpressure or partial vacuum in the bottom section. A suction line leads out of the container and into a container of powder. The aim of the invention is to further develop a device of this kind so that stock liquor can be prepared from cleaning agent powder taken directly from its container without producing any dust, and the stock liquor thus prepared stored for feeding to industrial washing or cleaning machines. This is achieved by locating a secondary suction line end inside the stock liquor container at a point which is remote from the point of entry of a primary suction line into the bottom section.

Abstract: The invention concerns apparatus for holding a bag containing powder so that powder can be removed through a suction line. The invention enables a bag-shaped powder container to be held in a position permitting the powder to be sucked out by the suction line. This is achieved by using a trough-shaped or bucket-shaped container. The bracket has a gripper element which hangs from a horizontal support arm, and a suction-line holder. The support arm and the suction-line holder are each located at a height above the container such that, when a bag is placed in the container, the bag is gripped at one of its top corners by the gripper element and held upright. The suction line is held so that it passes down through the suction-line holder and passes freely through an opening, in particular a slit-shaped opening, in the top of the bag and into the powder.

Abstract: Molded parts are deburred by being cooled down and treated with an abrasive. The parts are cooled down and circulated by a conveying gas which circulates in a circulation chamber, while the parts are treated with an abrasive introduced into the circulation chamber.

Abstract: Cold-embrittled parts are surface treated by an abrasive jet through the use of an arrangement which includes as a centrifuge wheel. The centrifuge wheel is self-priming and is connected to a granulate collecting tank via a suction pipe with a spray nozzle for low boiling liquefied gas being arranged in the inlet zone of the suction pipe. The resulting abrasive jet pattern is of the same shape and size as the treatment surface.

Abstract: A centrifugal throwing blast wheel is made of two discs which are spaced from each to form a V-shaped outwardly widening slot forming an angle .alpha.. Sets of diametrically opposed ejection vanes are between the discs. One set has straight throwing faces. Another set has concave faces with a curvature axis inclined toward the plane of rotation at an acute angle greater than .alpha./2. A third set has curved faces inclined toward the other side of the plane of rotation.

Abstract: A furnace for heating all sides of products such as metal slabs, billets, rough castings and the like includes a furnace chamber having a charging end and a discharging end. A plurality of carriages are positioned throughout the length of the furnace chamber to support products to be heated and are sequentially movable through the chamber from the charging end thereof to the discharging end thereof. Each carriage includes a support bench having extending upwardly therefrom support members to directly contact and support the products to be heated. A charging station is located adjacent the charging end of the furnace chamber for loading a product to be heated onto the carriage and introducing the thus loaded carriage into the furnace chamber, thereby displacing loaded carriages within the furnace chamber toward the discharging end and discharging a downstream-most loaded carriage from the discharging end of the furnace chamber.