Warm/hot medium hydro-forming device for sheets

Abstract

The invention discloses a warm / hot medium hydro-forming device for sheets. The device comprises a general double-acting hydraulic press rack, a heating system and a sheet hydro-forming unit, wherein the double-acting hydraulic press rack is used for installing and driving the sheet hydro-forming unit to work; the sheet forming unit provides heat for the sheet forming process through the heating system arranged in a furnace body, the sheet forming unit provides high pressure liquid for a charging chamber through a supercharger; and die assembly and forming processes in the sheet forming process are achieved through mutual matching of a female die and a male die. According to the device, corresponding cooling functions are achieved through designing of cooling water channels at appropriate positions in the sheet forming process; and simultaneously, isothermal and differential temperature hot hydro-forming processes can be achieved. The device has the advantages that problems of isothermal and differential temperature forming, sealing of equipment and long-time operation under high temperature and pressure can be solved farthest, and the forming limit of poor-plasticity sheet metal under the normal temperature can be improved.

Description

technical field [0001] The invention relates to the field of liquid-filled thermoforming equipment, in particular to a warm medium liquid-filled forming equipment for plates. Background technique [0002] Liquid-filled thermoforming is an advanced flexible forming technology that uses fluid high pressure forming proposed in the early 21st century. If the metal sheet is formed, a certain high-temperature power transmission medium, such as high-temperature rubber and other viscous media, liquid plasma water, high-temperature and high-pressure oil, and solid special powder, can be used as a soft convex (concave) mold, and then a rigid concave ( Convex) mold, under the action of force transmission medium to form the plate; if forming hollow pipe fittings, high temperature and high pressure oil and inert gas are mostly used. Carbon steel, alloy steel, stainless steel, aluminum alloy, titanium alloy and copper alloy and other materials with certain plasticity are suitable for liq...

AI Technical Summary

Problems solved by technology

These two patents differ only in the heating method. The heating position is located at the blank holder, and only the material of the flange is heated, and there is no cooling device, and the differential temperature liquid-filled forming cannot be performed; and the forming temperature is relatively low. The range of material adaptability is narrow, and the equipment cannot run for a long time due to the lack of cooling system

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