METHOD TO PRODUCE REINFORCED STRUCTURE FROM DISSIMILAR MATERIALS OPERATED IN HEAT-STRESSED CONDITIONS Russian patent published in 2014 - IPC B29C43/18 B29C43/42 B29C65/64 B29C70/70 B29L31/00 B22D17/00 

FIELD: machine building.

SUBSTANCE: units consisting of a metal case and an inner non-metal insert are used in the structures of items allowing the usage in technical fields implying aggressive action of internal gas dynamic medium characterised by pulse increase of pressure and temperature. The method involves manufacturing of workpieces of the case and the insert, their assembly in an integral unit and mechanical treatment of the assembly. The case is made from high-strength aluminium alloy in the form of a heavy power unit with outer elements of fastening units. The rear case part is made with a thin-walled formed shell of complex profile which is coupled to the case by the insert. The insert is produced by moulding with screw-like bosses in the rear part from composite moulding compounds in the form of thermosetting composition based on phenol binder. The process of insert manufacturing takes place together with its assembly and connection to the case and the shell. The case and the shell are placed in semi-moulds which are set in the press mould with electric heating, positioned in it, charge of pelleted moulding compound is installed and pressing by punch on a ball bearing assembly is carried out under the temperature of 160±5°C and pressure of 20±1 MPa with curing under the above parameters for 15±1 min. Coupling and mutual fixation of the case and the shell are performed during the pressing process and filling of inner undercuts in the case by moulding compound.

EFFECT: permanent connection of elements of a structure from dissimilar materials in the course of manufacturing one of them, without glueing operation, improved manufacturability with provision for required strength and reliability of the structure.

3 cl, 3 dwg