A test device and test method for laser absorption rate of materials
A test method and absorption rate technology, applied in the field of material laser absorption rate test equipment, can solve the problem of no practical laser absorption rate
Active Publication Date: 2019-04-12
陕西光泰航空机电装备制造有限公司
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[0004] The object of the present invention is to provide a test device for the laser absorptivity of materials, which solves the problem that there is currently no practically available measuring equipment for measuring the laser absorptivity of materials according to the temperature change of the material surface
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[0021] The present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments, but the present invention is not limited to these embodiments.
[0022] The invention provides a test device for laser absorptivity of materials, such as figure 1 As shown, it includes a test bench 6, and a laser 11, a laser controller 3, a test piece installation device and a temperature acquisition device arranged on the test bench 6.
[0023] Laser 11 uses CO 2 Laser tube, CO 2 The laser is erected on the test bench 6 through the bracket 12. As figure 2 As shown, the high voltage of the laser power supply 4 and the cylindrical CO 2 The anode of the laser tube is connected, and the ground (GND) of the laser power supply 4 is directly connected to the CO 2 The cathode of the laser tube is connected. The control signal line of the laser controller 3 is connected to the control terminal of the laser power supply 4 . The laser 11 i...
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The invention discloses a test device for material laser absorptivity. The test device comprises a test platform, wherein a laser device, a laser controller, a test piece mounting device and a temperature acquisition device are arranged on the test platform; the laser device is connected with the laser controller; a laser beam of the laser device is aligned to a test piece mounted on the test piece mounting device; the temperature acquisition device is connected with the test piece; temperature data is sent to a processor through a data acquisition device. A test method utilizing the device comprises the following steps: testing at a fixed point and testing at a moveable point; fixing the test piece on the test piece mounting device; starting the laser device for irradiating the test piece; and sending the temperature change of the test piece acquired by the temperature acquisition device to the processor through the data acquisition device, thereby acquiring the laser absorptivity data; or driving the test piece to linearly reciprocate by a sliding table of the mounting device, thereby obtaining influences of power and scanning speed on the absorptivity. The invention provides a convenient approach for directly acquiring the material absorptivity.
Description
technical field [0001] The invention belongs to the technical field of laser manufacturing, and in particular relates to a test device for the laser absorptivity of a material, and also relates to a test method for the laser absorptivity of the material. Background technique [0002] Laser absorption rate is one of the important indicators to measure the quality of laser cutting. In the prior art, there are three methods for testing laser absorptivity. The first is to measure the reflectance first, and then subtract the reflectance from 1 to obtain the laser absorptivity; the second is to study the laser absorptivity of the material indirectly according to the change of the material state in the laser action area; the third is to study the laser absorptivity of the material according to the temperature change of the material surface Calculate laser absorptivity. The above three methods have their own use occasions and requirements. For example, in the first method, it can...
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IPC IPC(8): G01N21/39
CPCG01N21/39
Inventor 侯红玲
Owner 陕西光泰航空机电装备制造有限公司