Titanium-based alloy material spinning forming method based on composite heating

Abstract

The invention provides a titanium-based alloy material spinning forming method based on composite heating. The titanium-based alloy material spinning forming method comprises the steps that firstly, ablank, a central spindle and a spinning roller are preheated with a flame gun; and secondly, the blank is heated to the spinning temperature with a follow-up induction heating coil, the temperature is monitored with an infrared thermal imager in the spinning process, and heating and heat preserving are conducted on the blank in a spun area behind the spinning roller with the flame gun. Accordingto the titanium-based alloy material spinning forming method based on composite heating, two heating modes including front-end electromagnetic induction heat source heating and back-end flame source heat compensating are combined, the temperature is monitored with the infrared thermal imager, and then online heating and precise temperature controlling in the spinning forming process are achieved.Embodiment results show that when spinning forming is conducted on a titanium-based alloy through the method, an obtained spun part is uniform in wall thickness, has no cracking phenomenon, is high inquality and can not generate defects such as instability wrinkling in the spinning process.

Description

technical field [0001] The invention relates to the technical field of plastic forming of titanium-based alloy materials, in particular to a spinning forming method of titanium-based alloy materials based on composite heating. Background technique [0002] The density of titanium-based alloy is only about 60% of that of steel, and it has excellent characteristics such as high strength, good corrosion resistance, wide temperature range, non-magnetic, high toughness, and good weldability. It is a new type of lightweight high-performance Structural materials. Therefore, titanium-based alloys have broad application prospects in the fields of aviation, aerospace, weapons, chemical industry, metallurgy, medical treatment, seawater desalination, offshore oil exploitation, and daily necessities. [0003] However, the difficult machining of titanium alloys limits its wide application. Spinning forming is an advanced manufacturing technology for thin-walled rotary parts without cutt...

AI Technical Summary

Problems solved by technology

However, some titanium-based alloy materials, such as titanium alloys, Ti 2 The forming temperature range of AlNb alloys is narrow. In order to ensure the forming quality, the requirements for the deformation temperature range and temperature uniformity are very strict.

However, the flame heating method has disadvantages such as large fluctuations in heating temperature, low heating precision, and low heating efficiency, which lead to defects such as instability, wrinkling, cracking, and uneven wall thickness of titanium-based alloy materials during the spinning forming process.

In addition, in the spinning process, the unreasonable distribution of the heat source of the flame heating will lead to problems such as die-holding in the spinning area of ​​the titanium-based alloy.

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