PRESSURE PLATE OF DOUBLE-BELT, SINGLE- OR MULTIFLOOR PRESS AND METHOD OF MAKING SUCH PLATE Russian patent published in 1994 - IPC

FIELD: metal pressure forming. SUBSTANCE: pressure plate has circular cross section ducts, arranged along its width, for passing a flow of heat transfer agent. The pressure plate also has additional ducts along its periphery. Each duct, arranged along the width of the plate, has an insert of heat conductive material for increasing a surface of the duct. The insert has a surface with a row of elements, protruding into a flow of the heat transfer agent, forming mutually joined surface and dividing the duct by several sectors with closed cross section. The insert is secured to the duct wall with the aid of solder, representing a compound of argentum, copper or tin. Method of making the pressure plate includes steps of forming in it mutually joined ducts for a flow of the heat transfer agent; mounting the insert, increasing the duct surface in the corresponding duct, the insert has identical or different-shape members, had been molded from metallic tubes; providing separate members of the insert by solder; heating the pressure plate together with the inserts, had been mounted in its ducts till temperature higher, than the solder melting temperature and lower, than a temperature of the insert member metal melting. EFFECT: simplified manufacturing process. 32 cl, 10 dwg