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Electrotome surface laser grooving and polishing integral machining method

A technology of laser grooving and processing methods, which is applied in the direction of laser welding equipment, metal processing equipment, manufacturing tools, etc., can solve the problems of reduced performance, easy adhesion on the surface, and easy corrosion, so as to improve fluidity, Improve corrosion resistance and performance, improve economic efficiency

Active Publication Date: 2017-11-21
BEIHANG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In view of the problem that human tissue is easily bonded to the surface of the electric knife during the use of the current electric knife and is prone to corrosion due to the action of human body fluids to reduce its performance, a picosecond laser is used to make a micro-groove structure on the surface of the electric knife, and then a nanosecond laser is used to carry out the process. Polished

Method used

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  • Electrotome surface laser grooving and polishing integral machining method
  • Electrotome surface laser grooving and polishing integral machining method
  • Electrotome surface laser grooving and polishing integral machining method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] Step 1. Take the metal electric knife sample 9 and use alcohol to ultrasonically clean and dry it.

[0029] Step 2. Start the picosecond laser 1 and the supporting software system, set the scanning area to 4mm×15mm, the groove width and spacing to 50μm, and the direction of the groove to be parallel to the direction of the blade. The laser spot diameter is 35μm, the laser wavelength is 193nm, the repetition frequency is 10KHz, the output power is 1W, the laser scanning speed is 10mm / s, and the scanning times are 200 times. During the process, the protective gas argon 8 is passed.

[0030] Step 3. Ultrasonic cleaning of the processed electric knife.

[0031] Step 4. Use a nanosecond pulse laser with a pulse width of 220ns to set a laser scanning area of ​​6mm×20mm to polish the micro-grooves on the knife surface of the electric knife, and the direction of the grooves is parallel to the scanning direction of the nanosecond laser. The laser spot diameter is 50 μm, the la...

Embodiment 2

[0034] Step 1. is the same as embodiment 1.

[0035] Step 2. Start the picosecond laser 1 and the supporting software system, set the scanning area to 4mm×15mm, the groove width and spacing to 150μm, and the direction of the groove to be parallel to the direction of the blade. The laser spot diameter is 35μm, the laser wavelength is 532nm, the repetition frequency is 500KHz, the output power is 50W, the laser scanning speed is 500mm / s, and the scanning times are 100 times. During the process, the protective gas argon 8 is passed. The results of preliminary notching are as follows figure 2 As shown, the confocal 3D view is shown as Figure 4 shown.

[0036] Step 3. is the same as embodiment 1.

[0037] Step 4. Use a nanosecond pulse laser with a pulse width of 220ns to set a laser scanning area of ​​6mm×20mm to polish the micro-grooves on the knife surface of the electric knife, and the direction of the grooves is parallel to the scanning direction of the nanosecond laser....

Embodiment 3

[0040] Step 1. is the same as embodiment 1.

[0041] Step 2. Start the picosecond laser 1 and the supporting software system, set the scanning area to 4mm×15mm, the groove width and spacing to 250μm, and the direction of the groove to be parallel to the direction of the blade. The laser spot diameter is 35μm, the laser wavelength is 1064nm, the repetition frequency is 1000KHz, the output power is 100W, the laser scanning speed is 1000mm / s, and the scanning frequency is 1 time. During the process, the protective gas argon 8 is passed.

[0042] Step 3. is the same as embodiment 1.

[0043]Step 4. Use a nanosecond pulse laser with a pulse width of 220ns to set a laser scanning area of ​​6mm×20mm to polish the micro-grooves on the knife surface of the electric knife, and the direction of the grooves is parallel to the scanning direction of the nanosecond laser. The laser spot diameter is 50μm, the laser wavelength is 1064nm, the repetition frequency is 1000KHz, the output power ...

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Abstract

The invention discloses an electrotome surface laser grooving and polishing integral machining method. The method comprises the following steps: (1) a metal high-frequency electrotome sample is ultrasonically cleaned by alcohol, and is dried; (2) a picosecond fiber laser with a pulse width of 600 ps is used for setting a laser scanning area of 4 mm*15 mm to machine a microgroove in the surface of the electrotome; (3) the machined electrotome is ultrasonically cleaned; (4) a nanosecond pulse laser with a pulse width of 220 ns is used for setting a laser scanning area of 6 mm*20 mm to polish the microgroove area on the surface of the electrotome; and (5) the machined electrotome is ultrasonically cleaned. The method can improve the electrotome bonding problem in operations, and polishes the surface to facilitate relief of the corrosion failure of the electrotome and prolonging of the service life of the electrotome. The method uses the advantages of a laser micromachining technology for efficiently and precisely prepare a microstructure on the surface of the electrotome by using a laser direct writing system; and the machining area and the machining range can be adjusted according to actual demands.

Description

technical field [0001] The invention relates to a laser processing method for the surface of a high-frequency electric knife, in particular to a processing method for integrating laser groove and polishing on the surface of an electric knife, belonging to the field of laser micromachining on the surface of metal materials. Background technique [0002] High-frequency electrosurgical instruments are electrosurgical instruments that replace ordinary scalpels. The electrification innovation in the field of surgery can be traced back to the end of the 19th century and the beginning of the 20th century, when it was first applied to the electrocautery therapy of tumors. According to the principles of medical physics, the high-frequency electric knife is made by utilizing the thermal effect of high-frequency current passing through the body. Since the effective area of ​​the contact is small, but the current density in the tissue under the electrode is very large, a large amount o...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B23P15/00B23K26/364A61B18/12
CPCA61B18/12A61B2018/00595B23K26/364B23P15/00
Inventor 管迎春方志浩
Owner BEIHANG UNIV
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