Production process of hot-rolled large-caliber thin-wall titanium alloy seamless tube

Abstract

The invention relates to the technical field of titanium alloy seamless tubes and discloses a production process of a hot-rolled large-caliber thin-wall titanium alloy seamless tube. The technologicaloperation process of the production process mainly comprises the following steps of A, an operator removes impurities in a titanium alloy material through a clogging screen; B, manufacturing the impurity removed titanium alloy material into a titanium alloy blank; C, pouring the titanium alloy blank into a seamless tube mold; D, just placing the titanium alloy seamless tube mold into an annular furnace to be heated; E, grabbing the heated titanium alloy blank seamless tube into a cooling device through a conveying device; F, conducting demolding after titanium alloy ingredients are subjectedto heating and cooling to generate a solid titanium alloy cylinder; and G, conducting fixing on the solid titanium alloy cylinder through a machining lathe. Through the production process of the hot-rolled large-caliber thin-wall titanium alloy seamless tube, the problems that titanium has a reaction with carbon, hydrogen, nitrogen and oxygen at high temperature, the organization structure of thetitanium is changed, the physical and chemical characteristics of the titanium are affected and the using requirements can be hardly met are solved.

Description

technical field [0001] The invention relates to the technical field of titanium alloy seamless pipes, in particular to a production process for hot-rolled large-diameter thin-walled titanium alloy seamless pipes. Background technique [0002] With the development of science and technology, people are using more and more new energy and new materials. Titanium alloys have low density, high specific strength, good fatigue resistance and crack growth resistance, strong corrosion resistance, and good welding performance. Excellent characteristics are favored by various fields. With the continuous development of titanium alloy processing technology, the market for titanium alloy seamless pipes is also growing. The traditional production process of titanium alloy seamless pipes includes two types, namely hot extrusion Cold drawing process and hot rolling process, hot extrusion and cold drawing process make the product length shorter (less than 6 meters), and the finished product ra...

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Problems solved by technology

[0002] With the development of science and technology, people are using more and more new energy and new materials. Titanium alloys have low density, high specific strength, good fatigue resistance and crack growth resistance, strong corrosion resistance, and good welding performance. Excellent characteristics are favored by various fields. With the continuous development of titanium alloy processing technology, the market for titanium alloy seamless pipes is also growing. The traditional production process of titanium alloy seamless pipes includes two types, namely hot extrusion Cold drawing process and hot rolling process, hot extrusion and cold drawing process make the product length shorter (less than 6 meters), and the finished product rate is lower (less than 50%). Because titanium reacts with carbon, hydrogen, nitrogen, and oxygen at high temperatures, its structure changes, affecting its physical and chemical properties, and it is difficult to meet the requirements for use.

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