Method for manufacturing frame component of magnesium alloy wheelchair

A manufacturing method and magnesium alloy technology, applied in metal processing, manufacturing tools, metal processing equipment, etc., can solve the problems such as the easy fracture of the weld bead and liner joints of the frame, achieve breakthroughs in technical bottlenecks, facilitate welding, reduce The effect of frame weight

Inactive Publication Date: 2012-06-20
古交市银河镁业有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to overcome the above-mentioned shortcomings, provide a manufacturing method of a magnesium alloy wheelchair frame member, and solve the problem that the weld bead and the liner joint of the magnesium alloy wheelchair frame are easily broken

Method used

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Embodiment Construction

[0018] The present invention will be further described in detail below in conjunction with the examples.

[0019] The frame member of the present embodiment includes a main pipe and a pipe to be welded vertically with it, and its process steps are as follows:

[0020] 1. Cut the liner pipe with the same diameter as the pipe to be welded to 50mm, and chamfer at 45 degrees;

[0021] 2. Put the end of the pipe to be welded into the heating box, take it out when the reading of the temperature control meter reaches 240°C, and put it into the liner clamp for clamping;

[0022] 3. First heat the lining pipe to 100°C, then align the chamfered end with the heating port of the pipe to be welded, and then step on the hydraulic ejector switch to slowly push the lining pipe into the pipe to be welded until the outer ends of the double pipes are even;

[0023] 4. Carry out arc milling at the end of the double pipe, the radian is the same as the outer diameter of the main pipe, and chamfer ...

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Abstract

The invention discloses a method for manufacturing a frame component of a magnesium alloy wheelchair. The method comprises the following steps of: (1) cutting a lining pipe with diameter equal to the inner diameter of a pipe to be welded, and chamfering for 45-75 degrees; (2) heating the end needing welding of the pipe to be welded, and clamping in a clamp with an embedded lining pipe; (3) heating the lining pipe and aligning the chamfered end thereof with the pipe to be welded so that the lining pipe is embedded into the pipe to be welded and the outer ends of the two pipes are level; (4) milling arc mouths at the ends of the two pipes, wherein the radian of the arc mouth is the same as that of the outer diameter of the main pipe; and chamfering the arc milling end until the inner side of the lining pipe is exposed; and (5) adjusting current to 120A, and performing flat welding of the lining pipe and the main pipe; and adjusting the current to 150A and performing scale welding of the pipe to be welded and the main pipe. In the invention, the pipe to be welded is heated to expand, the lining pipe is pressed into the pipe to be welded, then the two pipes are subjected to chamfering and welding, and thus, the two pipes are organically combined, the strength is improved, the problem of easy cracking at the welding part is solved, and the magnesium alloy wheelchair can reach the national test standard.

Description

technical field [0001] The invention relates to a manufacturing method of a wheelchair frame, in particular to a manufacturing method of a magnesium alloy wheelchair frame component. Background technique [0002] At present, the main materials for manufacturing rehabilitation wheelchairs in my country are steel, aluminum alloy, titanium alloy, carbon fiber and magnesium alloy. A wheelchair made of magnesium alloy is lighter than a wheelchair made of steel, aluminum alloy, and titanium alloy, and is roughly the same as carbon fiber, and its cost is much lower than carbon fiber and titanium alloy. However, the technical problem faced by the wheelchair frame made of magnesium alloy is that the welding performance is unstable and the plasticity of the magnesium alloy is poor. Defects are particularly sensitive to magnesium alloys with poor plasticity. In addition, the microstructure of magnesium alloys near the weld bead has changed under the action of high-temperature metal so...

Claims

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Application Information

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IPC IPC(8): B23P15/00B23P11/02
Inventor 李治国王枫周贵平
Owner 古交市银河镁业有限公司
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