SU1489950A1 - Method of diffusion welding - Google Patents

Abstract

The invention relates to diffusion welding and can be used to make bimetallic products in various industries. The purpose of the invention is to improve the quality of the welded joint by stabilizing the welding temperature. The parts to be welded are placed in a vacuumized thin-walled container, heated in a furnace between two metal plates to the welding temperature and transferred to the press with them. After isothermal holding under pressure, the container is cooled and the welded parts are removed. The heated plates prevent cooling of the container during its transfer to the press and isothermal holding.

Description

one

(21) 4332274 / 25-27

(22) 11/23/87

(46) 06/30/89. Bksh. No. 24

(71) Tambov Institute of Chemical Engineering

(72) Yu.M.Golovin, V.S.R. Zanov, V.P.Plotnikov and S.P. Kudr vtsev (53) 621.791.66 (-088.8)

(56) Japanese Application No. 57-85681, .cl. At 23 K 20/00, 05/28/82.

: (54) DIFFUSION WELDING METHOD

(57) The invention relates to diffusion welding and can be used to make bimetallic products in various sizes.

 industrialization The purpose of the invention is to improve the quality of the welded joint by stabilizing the welding temperature. The parts to be welded are placed in an evacuated thin-walled container e, they are heated in the furnace between two metal plates to the welding temperature and transferred to the press with them. After

 isothermal suction under pressure, the container is cooled and remove the welded parts. The heated plates prevent cooling of the container during its transfer to the press and the isothermal supply.

The invention relates to diffusion welding and can be used for the manufacture of bimetallic products in various industries.

The purpose of the invention is to improve the quality of the welded joint by stabilizing the welding temperature.

The method is carried out as follows.

The parts to be welded are placed in a thin-walled container, they are evacuated. They are heated in a furnace to the welding temperature between the metal plates, transferred to the press with them and squeezed. After isothermal aging, the container is cooled and the welded parts are removed.

Metal plates, heated in a furnace together with a container, accumulate additional heat

and in the process of transferring and holding on the press, it slows down the heat loss by the container, stabilizing the temperature in the weld zone, which improves the quality of the welded joint.

Example. Produced diffusion welding of flat plates of stainless steel 12X18H10T with a diameter of 300 mm, a thickness of 1 mm with plates of MZR copper with a diameter of 150 mm, a thickness of 1 mm in a vacuumized thin-walled container. The container was preheated in a separate furnace to 1253 K. Two plates 30 mm thick and 300 mm in diameter made of steel Art were heated together with the container. 3 to the same temperature. Then the container between the two heated plates was placed in a press and removed under a pressure of 10 Pa.

OD CO

SP

3 1489950

Claims (1)

15 min. In a container supported by a press, a 1.3 Pa. Isothermal vacuum is compressed and carried out, characterized in that, for the purpose of the invention, to improve the quality of the welded joint by diffusion welding, while stabilizing the temperature of the welded parts to be welded, The heating is carried out in an accumulated thin-walled chamber between metal plastic containers, heated in an oven before us and transferred to the press together with the temperatures of the welding, transferred to them.