Heating method for titanium alloy square billet

Abstract

The invention discloses a heating method for a titanium alloy square billet. The method comprises the following steps: according to a heating technology requirement for heating the titanium alloy square billet, a target heating temperature is set ranging from 880 DEG C to 1060 DEG C; a temperature is heated up from an indoor temperature to a temperature ranging from 500 DEG C to 700 DEG C, and a heat preservation is conducted for 40 min to 70 min; the temperature is heated up to a temperature ranging from 750 DEG C to 850 DEG C, and the heat preservation is conducted for 70 min to 100 min; and the temperature is heated up to the target temperature, the heat preservation is conducted for 80 min to 120 min, and the titanium billet is homogenized. By matching a resistance-type heating furnace with a gas heating furnace, a complementary type titanium alloy square billet heating is conducted, namely the small-sized resistance-type heating furnace is arranged beside the gas heating furnace to carry out the titanium alloy square billet heating. According to the heating method for the titanium alloy square billet, the rapid switching between rolling steel and rolling titanium can be achieved by a high speed continuous mill, the stand-by time of a rolling mill is lowered, and the production efficiency is improved. The problems that the distance between a roughing mill inlet of the high speed continuous mill and a furnace outlet of the gas heating furnace is small, and the square billet cannot directly enters into the roughing mill to carry out the rolling after being discharged from an electric furnace are solved, the problem that the titanium billet is prone to oxidation and hydrogen embrittlement after being heated by the gas heating furnace for a long time is avoided, and the quality of titanium products is improved.

Description

technical field [0001] The invention belongs to the technical field of titanium processing, and in particular relates to a heating method for a titanium alloy billet. Background technique [0002] Titanium alloy wire is widely used in aerospace, automobiles, tool connectors, medical devices and other fields due to its excellent corrosion resistance, high specific strength, and strong human affinity. The traditional production of titanium alloy wire and wire generally adopts a discontinuous rolling method, and the titanium alloy is hot-rolled into a wire or wire billet of φ6~φ10, and then stretched into a wire or wire of the required specification. The existing production methods of titanium alloy wires and wire blanks are generally forging or rotary forging. Bad and bad. [0003] In recent years, there has also been a method of producing titanium alloy rods and wires by hot rolling, all of which only need one heating. For example, a trolley heating furnace is used to heat...

AI Technical Summary

Problems solved by technology

In addition, due to the short distance between the entrance of the 1# rolling mill of some high-speed continuous rolling mills and the outlet of the gas heating furnace, titanium alloy billets cannot be directly rolled into the roughing mill after being released from the electric furnace. In order to solve this contradiction and the above technical problems, the development A kind of heating method of the titanium alloy billet that can solve the above problems is very necessary