Method for preparing titanium steel composite plate through auxiliary hot rolling of pulse current

Abstract

The invention provides a method for preparing a titanium steel composite plate through auxiliary hot rolling of pulse current. The method comprises the following steps that S1, a titanium plate, a steel plate and a middle layer material are prepared, and to-be-composited surfaces of the titanium plate, the steel plate and the middle layer material are subjected to treatment and cleaning thoroughly; S2, the titanium plate and the steel plate are subjected to vacuum assembling; S3, a heating device is heated to the designated temperature, a blank is put in the device, and vacuum heat preservation treatment is carried out for a certain time; S4, a roller gap and a rolling speed of a rolling mill are set in advance, the blank obtained after heat treatment is taken out to be put into a rollingmill inlet connected with a pulse power source device, an insulation push plate is used for pushing the blank into the rolling mill, and according to the certain rolling reduction and the rolling speed, rolling is carried out to obtain the titanium steel composite plate. According to the method for preparing the titanium steel composite plate through auxiliary hot rolling of the pulse current, theelectroplastic effect and the tip end effect of the pulse current are used, the two kinds of materials of titanium and steel achieve metallurgical bonding under the small reduction amount, and the titanium steel composite plate good in plate shape and high in combination strength can be obtained.

Description

technical field [0001] The invention relates to the technical field of metal composite plate preparation, in particular to a method for preparing titanium steel composite plate by pulse current assisted hot rolling. Background technique [0002] Titanium is light in weight, high in strength and corrosion-resistant, especially resistant to seawater and marine atmospheric corrosion. high cost. Steel has good mechanical properties and forming properties, but its corrosion resistance is far inferior to that of titanium. Titanium-steel composite panels have both the excellent properties of the two materials, and at the same time can reduce material costs, and gradually become a substitute for single titanium materials. They are widely used in petroleum, chemical, electric power, especially marine engineering and other fields. [0003] At present, the techniques for preparing solid-phase composites of titanium steel mainly include: explosive composite method, diffusion composite...

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Problems solved by technology

The size of the composite panels produced by the first two processes is small, which is not suitable for the production of thin specification composite panels, and it is difficult to meet the requirements of users. Although the latter two methods can produce large-sized composite panels, the process of explosion + rolling composite method Complicated, high energy consumption, relatively low yield, while the hot rolling composite method has high production efficiency, and at the same time has the advantages of low pollution, low energy consumption, and can produce large-area composite panels, which is the development trend of future production of composite panels

[0004] The traditional hot-rolled titanium-steel clad plate process uses ordinary flat roll hot rolling, the rolling temperature is high, and brittle compounds are easily formed at the interface, resulting in low bonding strength, high single-pass reduction rate, high requirements for rolling mill capacity, and dissimilar metals. Poor coordination of deformation between parts, severe warping of composite board, and large residual stress

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