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Aluminum alloy cold spraying device and method for magnesium alloy hub

A technology of aluminum alloy and magnesium alloy, which is applied in the field of anti-corrosion spraying on the surface of metal materials, can solve the problems of low bonding strength of substrates, large coating porosity, short service life, etc., and achieve long service life, good corrosion resistance, combined strong effect

Inactive Publication Date: 2013-02-13
刘绍东
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide a thick coating and firm combination to solve the problem that the magnesium alloy wheel hub of the prior art has a thin coating, low bonding strength with the base material, and cannot adapt to driving under complex roads and poor road conditions. A device and method for cold-spraying aluminum alloy on a magnesium alloy wheel hub so that the surface of the magnesium alloy wheel hub has the anti-corrosion properties of the aluminum alloy wheel hub
[0005] The second object of the present invention is to provide a coating with small porosity, good corrosion resistance and long service life to solve the problems of the existing aluminum alloy coatings with large porosity, easy corrosion and short service life. Device and method for cold spraying aluminum alloy on magnesium alloy wheel hub

Method used

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  • Aluminum alloy cold spraying device and method for magnesium alloy hub
  • Aluminum alloy cold spraying device and method for magnesium alloy hub
  • Aluminum alloy cold spraying device and method for magnesium alloy hub

Examples

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Embodiment 1

[0034] in such as figure 1 figure 2 In the shown embodiment 1, a device for cold-spraying aluminum alloy on a magnesium alloy hub includes a frame and a hub drive mechanism 1 arranged on the frame, and the hub drive mechanism is provided with a rotating shaft for fixing the hub 2 3. The rotational speed of the rotating shaft is 60 to 120 revolutions per minute. A hub heating device 4 is provided on one side of the rotating shaft. The hub heating device includes a heating chamber 8 that can accommodate part of the hub. The heating chamber is provided with a heating element 15. The heating of the heating chamber The temperature ranges from 70 to 220 degrees Celsius. The frame is also provided with a nozzle 5 for cold spraying aluminum alloy to the wheel hub. The nozzle is arranged on the outer peripheral surface side of the hub and the end face side of the hub respectively. In connection, the device for cold spraying aluminum alloy on the magnesium alloy hub also includes a c...

Embodiment 2

[0044] The frame of embodiment 2 is also provided with a spraying surface pressing device (see image 3 ), the pressing device includes a pressing wheel 9 in rolling contact with the spraying surface, the pressing surface of the pressing wheel is compatible with the spraying surface of the hub, and the average pressure of the pressing surface of the pressing wheel on the hub is 0.3 to 0.8MPa. The spraying surface pressing device includes a pressing wheel heating device 10, the heating temperature of the pressing wheel heating device is consistent with the temperature of the cold sprayed aluminum alloy powder of the nozzle, and the spraying surface pressing device also includes a pressing wheel vibration device 11. The vibration frequency of the pressing wheel vibrating device is 50 to 100 Hz. The pressing wheel vibrating device is connected to the driving shaft 13 of the pressing wheel through a spring 12, and the rest are the same as in Embodiment 1.

[0045] For the embodim...

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Abstract

The invention discloses an aluminum alloy cold spraying device and method for a magnesium alloy hub. The device comprises a rack and a hub drive mechanism arranged on the rack, wherein the hub drive mechanism is provided with a rotation shaft for fixing the hub; a hub heating device is arranged on one side of the rotation shaft; the rack is also provided with a spray head for the cod spraying of aluminum alloy on the hub; the spray head is connected with a spray head spraying control device for controlling the flow and the spraying speed; the aluminum alloy cold spraying device for a magnesium alloy hub also comprises a controller; and the controller is connected with and controls the hub drive mechanism, the hub heating device and the spray head spraying control device. Through the invention, the problems that the magnesium alloy hub in the prior art has a thin coating and the aluminum alloy coating in the prior art has high porosity and short service life are solved; the structure provided by the invention has thick coating, low coating porosity, high corrosion resistance and long service life; and the surface of the magnesium alloy hub has the corrosion resistance of an aluminum alloy hub.

Description

technical field [0001] The invention relates to the technical field of surface spraying and anticorrosion of metal materials, in particular to a device and method for cold spraying aluminum alloy on a magnesium alloy hub. Background technique [0002] China has become a major producer of the world's automobile industry, with an output of 18 million vehicles in 2011. In order to save energy and reduce exhaust emissions, the development of the automobile industry must achieve lightweight. Magnesium alloy is a structural material with a lighter specific gravity among known metal materials, 3 / 4 lighter than steel and 1 / 3 lighter than aluminum, and has many applications in auto parts, such as steering wheels, dashboards, seats , gearboxes and engine casings, etc. On the moving parts, the wheel hub has also begun to use magnesium alloy. For example, the hubs on airplanes and the hubs on racing cars, but usually these hubs are used in better road conditions and have a shorter ser...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C23C24/08
Inventor 刘绍东
Owner 刘绍东
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