Rare earth enhanced magnesium-zinc alloy seamless pipe hot extrusion technology and temperature control extrusion die

Abstract

The invention discloses a rare earth enhanced magnesium-zinc alloy seamless pipe hot extrusion technology and temperature control extrusion die. The rare earth enhanced magnesium-zinc alloy seamless pipe hot extrusion technology comprises the technological steps of casting ingot homogenizing treatment, primary extrusion machining, lubricating treatment, temperature control extrusion forming and pipe heat treatment. The rare earth enhanced magnesium-zinc alloy seamless pipe temperature control extrusion die comprises an upper die base, a lower die base, an inner extrusion barrel, an outer extrusion barrel, a heat insulation layer and an outer covering die. A heating wire is arranged inside the outer extrusion barrel, a pipe shaping die and an extrusion rod are installed in the inner extrusion barrel, an extrusion needle is fixedly installed at the lower end of the extrusion rod, the inner extrusion barrel, the outer extrusion barrel, the heat insulation layer and the outer covering dieare provided with a through temperature measuring hole, and a thermocouple is installed in the temperature measuring hole. Compared with the prior art, the rare earth enhanced magnesium-zinc alloy seamless pipe hot extrusion technology and temperature control extrusion die have the advantages that extrusion deformation force is small, assembling and disassembling are more convenient and faster, the pipe blank dimension is more precise, product machining quality is good, and the good rate is high.

Description

technical field [0001] The invention relates to the technical field of zinc alloy seamless pipe processing, in particular to a rare earth reinforced magnesium-zinc alloy seamless pipe hot extrusion process and a temperature-controlled extrusion die. Background technique [0002] Magnesium alloy has the advantages of low density, high thermal conductivity, good damping effect, and easy cutting. It is regarded as the engineering material with the most development and application prospects in this century. It has been applied in many fields such as aviation, aerospace, automobiles, and medical equipment. However, the close-packed hexagonal crystal structure of magnesium and magnesium alloys makes the slip system less active during the deformation process, which affects its plastic deformation ability. Therefore, magnesium alloy, as a component material, is either molded at one time through die-casting; or its plasticity and strength are improved through forging, extrusion, roll...

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Problems solved by technology

[0007] In order to overcome the deficiencies of the prior art, the present invention provides a rare earth reinforced magnesium-zinc alloy seamless pipe hot extrusion process and a temperature-controlled extrusion die, which solves the problems existing in the production process of the prior art magnesium-zinc alloy seamless pipe Technical defects such as poor precision and poor pipe quality

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