RU2525968C2 - Device for diffusion welding - Google Patents

Abstract

FIELD: technological processes.

SUBSTANCE: invention relates to pressure welding equipment, in particular, to installations for diffusion welding of materials in solid state, in particular, of metals or metals with non-metals or non-metals with non-metals and may be used in electronic and aircraft industry. The device contains a vacuum chamber, a table and a pressure application mechanism with a rod. The device is equipped with capacitor bank with contacts, the rod rotation drive and an electromotor with a shaft. The rod head part is designed in the form of eccentrically and inclinedly installed spherical segment the external surface whereof is designed in the form of alternating metal and non-metal plate-like strips periodically closing the capacitor bank contacts during the rod rotation. The rod is designed so that to enable disconnection from the shaft of its rotation electromotor drive at the moment of electric explosion.

EFFECT: device technologic capabilities expansion and ensuring better strength of welded connection due to creation of a series of electric explosions at specific time intervals.

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Description

The invention relates to equipment for pressure welding, and in particular to installations for diffusion welding, and can be used, for example, in the electronic and aviation industries.

A device for diffusion welding, containing a vacuum chamber, a punch and a work table with a ball bearing / 1 /.

A disadvantage of the known device is the difficulty of transmitting uniform pressure on the welded parts of a large area and the difficulty of welding parts having a taper.

A device for diffusion welding is known, comprising a support installed in a vacuum chamber, a heater and a pressure rod inserted into the chamber through a seal in its cover, having a loosely worn ring on the pressure rod, and radial sockets made and disposed in the same transverse plane in the rod, in which fingers are installed spring-loaded outwardly and on the inner surface of the ring radial sockets located in the same transverse plane are made corresponding to the stem sockets, while being aligned with the ring sockets with Oryons of its outer surface are equipped with release screws, and an adjustable stop is mounted inside the chamber to limit the axial movement of the ring relative to the rod.

A disadvantage of the known device is the difficulty of transmitting uniform pressure on the welded parts of a large area, the technical complexity of the device and low productivity / 2 /.

A device for diffusion welding, containing a vacuum chamber, a punch and a work table with a ball bearing, and between the contact surfaces of the ball bearing and the clamping heel is a gasket made of indium / 3 /.

A disadvantage of the known device is the difficulty of transmitting uniform pressure on the welded parts of a large area, as well as the difficulties of creating a series of electrical explosions at certain intervals to ensure greater strength of the welded joint.

The aim of the invention is to expand the technological capabilities of the device and ensure greater strength of the welded joint when creating a series of electrical explosions at certain intervals.

This goal is achieved by the fact that in a known device containing electrodes, a pressure application mechanism, a vacuum chamber, a table, a rod, a capacitor bank is introduced, and an electric explosion is created by a series of electric explosions when the contacts of the head of the rotating rod are closed, and at the time of the electric explosion, the rotating rod is disconnected from the shaft of the electric motor of its rotation drive, and the head of the rotating rod is made in the form of an eccentrically and obliquely mounted spherical segment, in which uzhnaya surface is in the form of alternating metallic and non-metallic (insulating) plate streaks.

Figure 1 schematically shows the proposed device. The device comprises a vacuum chamber 1 and a working table 2 located therein, a rod with a pressure application device 3, a capacitor bank 4, and the head of the rotating rod 5 is made in the form of an eccentrically and obliquely mounted spherical segment, in which the outer surface is made in the form of alternating metal and non-metallic (insulating) plate strips.

The device operates as follows.

The parts to be welded 6 are installed through the metal interlayer 7 on the work table 2, the device is closed and vacuumized. A duty cycle is included, during which the parts are clamped by the rod 3 and the device is started. In this case, from the rotation drive, the rod 3 begins to rotate, and the head part 5 of the rotating rod, made in the form of an eccentrically and obliquely mounted spherical segment, in which the outer surface is made in the form of alternating metal and nonmetallic (insulating) plate strips, during rotation of the rod periodically closes the contacts capacitor banks 4, while creating an electric explosion with a series of electric explosions when the contacts of the head of the rotating rod are closed with the simultaneous application of pressure the pressure application mechanism, and when electric explosion of the rotating shaft 3 is disconnected from the motor drive shaft rotation.

All this allows you to expand the technological capabilities of the device and to provide greater strength of the welded joint when creating a series of electrical explosions at certain intervals, depending, in particular, on the angular velocity of rotation of the rod.

Information sources

1. Kazakov N.F. Diffusion welding of materials. M .: Mechanical Engineering, 1976., p. 116.

2. RF patent No. 1769470. MKI B23K 20/26, 2006. Device for diffusion welding.

3. RF patent No. 1700869. MKI B23K 20/26, 1995. Device for diffusion welding.

Claims (1)

A device for the diffusion welding of materials in the solid state, in particular metals or metals with non-metals or non-metals with non-metals, in vacuum through an electrically exploding layer containing a vacuum chamber, a table and a pressure application mechanism with a rod, characterized in that it is equipped with a capacitor bank with contacts , a rod rotation drive and an electric motor with a shaft, while the head of the rod is made in the form of an eccentrically and obliquely mounted spherical segment, the outer surface of which you olnena in the form of alternating metallic and non-metallic plate strips periodically closing the battery contacts capacitors while rotating rod, the rod is adapted to disconnect the drive motor with the shaft rotation when electric explosion.