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A cross-spinning strengthening method for magnesium alloy thin-walled cylindrical parts

A magnesium alloy, thin-walled cylinder technology, applied in metal processing equipment, forming tools, manufacturing tools, etc., can solve the problems of low circumferential tensile strength and low axial tensile strength of magnesium alloy thin-walled cylindrical parts, and achieve the The effects of improved radial and radial mechanical properties, uniform microstructure distribution, and reduced anisotropy

Active Publication Date: 2019-11-15
HARBIN INST OF TECH
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] The invention aims to solve the problem that the magnesium alloy thin-walled cylindrical parts prepared by the traditional magnesium alloy spinning process tend to produce obvious anisotropy, which causes the hoop tensile strength of the magnesium alloy thin-walled cylindrical parts to be lower than the axial tensile strength Problem, provide a cross-spinning strengthening method for magnesium alloy thin-walled cylindrical parts

Method used

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  • A cross-spinning strengthening method for magnesium alloy thin-walled cylindrical parts
  • A cross-spinning strengthening method for magnesium alloy thin-walled cylindrical parts

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specific Embodiment approach 1

[0026] Specific Embodiment 1: In this embodiment, a cross-spinning strengthening method for magnesium alloy thin-walled cylindrical parts is carried out according to the following steps:

[0027] Step 1: Put the magnesium alloy billet on the mandrel of the spinning machine and fix it, preheat the mandrel of the spinning machine and the magnesium alloy billet, and then uniformly coat the outer surface of the mandrel of the spinning machine and the outer surface of the magnesium alloy billet spray lubricant;

[0028] Step 2: preheating the mandrel of the spinning machine, the wheel of the spinning machine and the magnesium alloy blank to the spinning temperature;

[0029] The spinning temperature of the mandrel of the spinning machine and the magnesium alloy blank is 200-450°C; the spinning temperature of the spinning wheel of the spinning machine is 100-150°C;

[0030] Step 3: Start the spinning machine for strong spinning;

[0031] Step 4: Change the rotation direction of th...

specific Embodiment approach 2

[0034] Embodiment 2: This embodiment differs from Embodiment 1 in that: in Step 1, the mandrel of the spinning machine is preheated to 150°C. Others are the same as in the first embodiment.

specific Embodiment approach 3

[0035] Embodiment 3: The difference between this embodiment and Embodiment 1 or 2 is that the magnesium alloy billet is preheated to 150° C. in Step 1. Others are the same as in the first or second embodiment.

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Abstract

The invention relates to the field of cylindrical part reinforcing methods, in particular to a cross-spinning reinforcing method of a magnesium alloy thin-walled cylindrical part, and aims to solve the problem that a magnesium alloy thin-walled cylindrical part prepared by a traditional magnesium alloy spinning process is prone to generating obvious anisotropy, so that the circumferential tensilestrength of the magnesium alloy thin-walled cylindrical part is lower than the axial tensile strength of the magnesium alloy thin-walled cylindrical part. The cross-spinning reinforcing method comprises the following steps of 1, fixing a magnesium alloy blank and carrying out preheating; 2, preheating the magnesium alloy blank to a spinning temperature; 3, starting a spinning machine to carry outstrong spinning; 4, changing the rotating direction of a core shaft of the spinning machine, carrying out preheating, spraying lubricants, and carrying out next-pass strong spinning; and 5, repeatingstep 4 until the magnesium alloy thin-walled cylindrical part with the target size is obtained. The cross-spinning reinforcing method can be used for the spinning forming process of the magnesium alloy thin-walled cylindrical part, and is capable of effectively improving the circumferential mechanical property of the part formed by spinning.

Description

technical field [0001] The invention relates to the field of strengthening methods for cylindrical members. Background technique [0002] With the increasing requirements for weight reduction and energy saving, lightweight and thin-walled rotary components are more and more widely used in the fields of automobiles, aerospace and other fields. However, in the actual service process, not only the cylindrical shell components are required to have high dimensional accuracy, but also the components are required to have a certain ability to withstand internal pressure. The direction with the weakest performance is the short plate that limits the pressure bearing capacity of the cylindrical shell member. Therefore, reducing the anisotropy of cylindrical shell components, improving the comprehensive mechanical properties of components, and improving the internal pressure bearing capacity of cylindrical components have important practical significance for component weight reduction....

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B21D22/16B21D37/18B21D37/16
CPCB21D22/16B21D37/16B21D37/18
Inventor 徐文臣靳学泽杨川单德彬
Owner HARBIN INST OF TECH
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