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A kind of strengthening method and equipment for aluminum alloy laser cyclic cryogenic treatment

A technology of cryogenic treatment and aluminum alloy, which is applied in the strengthening field of aluminum alloy laser cycle cryogenic treatment, can solve the problems such as lack of aluminum alloy cryogenic treatment process, achieve the effect of increased hardness, good treatment quality, and surface strengthening

Active Publication Date: 2022-03-11
湖南淼鑫铝业有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] In order to solve the problem of lack of aluminum alloy cryogenic treatment process in the prior art, the present invention provides a strengthening method and equipment for aluminum alloy laser cycle cryogenic treatment

Method used

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  • A kind of strengthening method and equipment for aluminum alloy laser cyclic cryogenic treatment
  • A kind of strengthening method and equipment for aluminum alloy laser cyclic cryogenic treatment
  • A kind of strengthening method and equipment for aluminum alloy laser cyclic cryogenic treatment

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0043] Step 1. Clean the surface of the aluminum alloy workpiece with a thickness of 0.5 mm, polish the surface of the aluminum alloy workpiece with 240-2000 mesh sandpaper, polish it with 1000-8000 mesh polishing paste and place it on the workbench; preferably, the workpiece is polished Then perform an ultrasonic cleaning, the solution used for ultrasonic cleaning is 95% absolute ethanol, and then use a black marker pen that can be wiped off to blacken the surface of the workpiece that needs to be irradiated by the laser.

[0044] Step 2: Preheat the aluminum alloy workpiece to 60°C, and keep the ambient temperature at 60°C.

[0045] Step 3: The laser beam scans the workpiece so that the surface of the workpiece reaches the aging temperature in the cycle cryogenic cooling, and the aging temperature is 120°C; the laser beam scanning speed is 5mm / s, the defocus is 65mm, and the laser power is 600W.

[0046] Step 4, immerse the aluminum alloy workpiece in liquid nitrogen at -196...

Embodiment 2

[0051] Step 1. Clean the surface of the aluminum alloy workpiece with a thickness of 28 mm, polish the surface of the aluminum alloy workpiece with 240-2000 mesh sandpaper, polish it with 1000-8000 mesh polishing paste and place it on the workbench; preferably, after polishing the workpiece Perform an ultrasonic cleaning, the solution used for ultrasonic cleaning is 95% absolute ethanol, and then use a black marker that can be wiped off to blacken the surface of the workpiece that needs to be irradiated by the laser.

[0052] Step 2, preheating the aluminum alloy workpiece to 80°C, and keeping the ambient temperature at 80°C.

[0053] Step 3: The laser beam scans the workpiece so that the surface of the workpiece reaches the aging temperature in the cryogenic cycle, and the aging temperature is 160°C; the scanning speed of the laser beam is 2mm / s, the defocus is 30mm, and the laser power is 2000W.

[0054] Step 4, immerse the aluminum alloy workpiece in liquid nitrogen at -196...

Embodiment 3

[0059] Step 1. Clean the surface of the aluminum alloy workpiece with a thickness of 10 mm, polish the surface of the aluminum alloy workpiece with 240-2000 mesh sandpaper, polish it with 1000-8000 mesh polishing paste and place it on the workbench; preferably, after polishing the workpiece Perform an ultrasonic cleaning, the solution used for ultrasonic cleaning is 95% absolute ethanol, and then use a black marker that can be wiped off to blacken the surface of the workpiece that needs to be irradiated by the laser.

[0060] Step 2, preheating the aluminum alloy workpiece to 70°C, and keeping the ambient temperature at 70°C.

[0061] Step 3: The laser beam scans the workpiece so that the surface of the workpiece reaches the aging temperature in the cycle cryogenic cooling, and the aging temperature is 140°C; the scanning speed of the laser beam is 4mm / s, the defocus is 45mm, and the laser power is 1300W.

[0062] Step 4, immerse the aluminum alloy workpiece in liquid nitrogen...

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Abstract

The invention relates to a strengthening method and equipment for laser cycle cryogenic treatment of aluminum alloy. The steps of the method are as follows: step 1, cleaning, grinding and polishing the surface of the aluminum alloy workpiece and placing it on the workbench; step 2, preheating the aluminum alloy workpiece and keep the ambient temperature; Step 3, the laser beam scans the workpiece; Step 4, immerse the aluminum alloy workpiece in liquid nitrogen; Step 5, take it out from the liquid nitrogen, preheat the aluminum alloy workpiece and maintain the ambient temperature, and carry out the steps Step 3: Step 6: After repeating Step 4 and Step 5 3-5 times, place the aluminum alloy workpiece at room temperature to cool and then clean it. The equipment includes base, support frame, laser, working box, workbench and liquid nitrogen storage tank. The aluminum alloy obtained by the patented method and equipment has high surface hardness.

Description

technical field [0001] The invention belongs to the field of aluminum alloy laser treatment, and relates to a strengthening method and equipment for aluminum alloy laser cycle cryogenic treatment. Background technique [0002] Cryogenic treatment was applied in watchmaking more than 100 years ago, and the Swiss used low temperature to improve the hardness of watch parts more than 100 years ago. Americans also began to conduct research on cryogenic treatment more than 70 years ago, and studied the influence of this process method on material properties. So far, cryogenic treatment has been widely used in the heat treatment of metal materials for more than 50 years. At present, cryogenic treatment has been widely used abroad and industrialized production has been realized, but most of the research direction is tool steel. As a cold treatment process for modifying the interior of materials, cryogenic treatment has become a research hotspot of metal materials at present. In r...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C22F1/053
CPCC22F1/053
Inventor 苏睿明王楷甯马思怡李广龙曲迎东李荣德
Owner 湖南淼鑫铝业有限公司