Composite Strengthening Method for Large-area Flat Coatings
A large-area, flat technology, applied in the field of large-area flat coating composite strengthening, can solve the problems of insufficient coating film/base bonding force, weak film/base bonding force, poor mechanical properties of components, etc., to improve hardness, increase The effect of interfacial adhesion, fatigue strength and wear and corrosion resistance
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Embodiment 1
[0047] The composite strengthening method of large-area flat coating comprises the following steps:
[0048] S1. Ultrasonic vibration assisted peripheral milling (suitable for large-sized workpieces)
[0049] as attached figure 1 , 2 As shown, the workpiece 1 is fixed and clamped on the milling machine table; the peripheral milling cutter 2 rotates around the main shaft, and at the same time makes a feed motion along the horizontal direction, and makes a small reciprocating vibration with a fixed frequency along the feed direction, forming a as attached image 3 The shown regular distribution of micron-sized furrow-shaped 3D microstructures.
[0050] Set the process parameters as follows:
[0051] Spindle rotation speed: 5000r / min;
[0052] Milling cutter helix angle: 25°;
[0053] Circumferential milling cutter feed speed: 40mm / min;
[0054] Ultrasonic vibration amplitude: 7 microns;
[0055] Ultrasonic vibration frequency: 20KHz.
[0056] In the obtained three-dimen...
Embodiment 2
[0070] as attached Figure 5 As shown, in step S1, the workpiece 1 is clamped on the worktable of the milling machine and follows the worktable along the feeding direction of the circumferential milling cutter 2 to make a small reciprocating vibration with a fixed frequency; the circumferential milling cutter 2 rotates around the main shaft and simultaneously Do feed movement, form specific regular distribution of nano-scale micro-geometric topography on the processing surface (suitable for small-sized workpieces).
[0071] Steps S2, S3, and S4 are the same as those in Embodiment 1.
experiment example 1
[0077] Sample 1: the workpiece processed by milling in step S1.
[0078] Sample 2: The workpiece processed by ordinary circumferential milling.
[0079] The roughness of the sample surface was measured, and the results were as follows: Figure 6 shown. It can be seen that at the same feed rate, the roughness of ultrasonic vibration milled parts is much lower than that of ordinary milled parts.
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Abstract
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