Metal thin-wall composite tube impacting and hydraulic bulging device and method

Abstract

The invention discloses a metal thin-wall composite tube impacting and hydraulic bulging device and method, and relates to the technical field of hydraulic bulging of metal tubes. For solving the technical problems that in the prior art, the structure of lead screws is complicated, threads, a bearing supporting step and the like need to be arranged, the left screw and the right screw further need threads with opposite directions of turning and are connected by a threaded sleeve, the processing cost is increased, and the assembling cost is also increased; a dovetail groove needs to be formed in a sliding seat, a horizontal sliding block needs to be mounted, and the processing cost and the maintenance cost are further increased; and operation is complicated and the like, a lead screw lifter which is mature in markets is used as a feeding unit, a large number of design, manufacturing and assembling costs are reduced, the pressure in a composite tube is adjusted automatically by a liquid injector, the step of manual liquid replenishment is omitted, the design, production, manufacturing and use costs are greatly reduced, and the metal thin-wall composite tube impacting and hydraulic bulging method has simple steps, and is high in efficiency and convenient to operate and control.

Description

technical field [0001] The invention relates to the technical field of hydraulic bulging of metal pipes, in particular to an impact hydraulic bulging device and method for thin-walled metal composite pipes. Background technique [0002] Hydraulic bulging of metal composite pipe is a forming technology that causes elastic-plastic deformation of the inner and outer metal pipes to different degrees through internal pressure, and the elastic recovery of the outer pipe is greater than the elastic recovery of the inner pipe, so that the inner and outer pipes are tightly combined. Metal composite pipe is composed of two metal pipes of different materials. Because of its advantages of corrosion resistance, high bearing capacity and low cost, it has developed rapidly in the field of pipes. Compared with traditional single metal pipes Compared with metal composite pipes, it has both the physical, chemical and mechanical characteristics of composite materials. Therefore, the metal com...

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Problems solved by technology

[0004] The present invention provides an impact hydraulic bulging device for metal thin-walled composite pipes, which is used to solve the problem of the prior art 1. The structure of the screw rod is complex, and it is necessary to set threads, bearing support steps, etc., and the left and right screw rods also need to be provided with opposite rotation directions. The thread is connected with a threaded sleeve, which not only increases the processing cost but also increases the difficulty of assembly; 2. It is necessary to set a dovetail groove on the slide seat and install a horizontal slider, which further increases the processing cost and maintenance cost; 3. Technical problems such as complex operation

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