Device for strengthening laser cladding layer through high-frequency vibration rolling and using method thereof

A laser cladding and high-frequency vibration technology, applied in coating, metal material coating process, etc., can solve the problems of high economic cost and difficult machining, achieve uniform solute, short transfer path, and improve comprehensive performance.

Active Publication Date: 2022-01-18
CHANGCHUN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, this method needs to be machined before high-frequency rolling. Due to the generally high hardness of the cladding layer, machining is relatively difficult.
The whole process includes laser cladding, mechanical processing, high-frequency rolling, and the economic cost is relatively high

Method used

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  • Device for strengthening laser cladding layer through high-frequency vibration rolling and using method thereof
  • Device for strengthening laser cladding layer through high-frequency vibration rolling and using method thereof
  • Device for strengthening laser cladding layer through high-frequency vibration rolling and using method thereof

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Experimental program
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Effect test

Embodiment 1

[0053] Metallographic sandpaper was used to grind and clean the cladding sample substrate. The sample substrate was H13 steel with a specification of 6mm×15mm×30mm, and the cladding material used was Ni60+30%Wc powder. After installing the sample on the cladding equipment, the parameters of laser cladding processing are as follows: laser power is 3000W×70%; scanning speed is 0.06mm / s; powder feeder speed is 0.8rpm; protective gas should be argon, gas supply speed The defocus is 12mm; the vibration frequency is 20kHz; the loading force of the roller is 10N; the tangent point between the roller and the sample is 3.5mm away from the center of the spot (ie parameter S3). The experimental results are attached Figure 8 The physical figure of the cladding sample obtained for this embodiment; Image 6 As can be seen from the metallographic diagram of the cladding prepared in this example, the components in the Ni60+30% Wc cladding are evenly distributed, and the crystal grains are u...

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Abstract

The invention relates to a device for strengthening a laser cladding layer through high-frequency vibration rolling and a using method thereof, and belongs to the field of metal material surface strengthening. The device comprises a laser cladding system and an ultrasonic rolling system; the laser cladding system comprises a robot arm and a laser cladding head; and the ultrasonic rolling system comprises an ultrasonic rolling system support, an ultrasonic vibration device, a pressing roller and the like. Ultrasonic rolling is carried out while the laser cladding layer is formed, and the pressing roller acts on the edge of a molten pool. Ultrasonic vibration applied to the pressing roller can refine cladding layer grains and optimize the mobility of metal in the molten pool, so that tissue distribution is uniform, bubbles are easy to escape, and microdefects are reduced. The rolling of the pressing roller in an action area not only can realize surface grain refinement on a semi-solidified or just solidified cladding layer, convert residual tensile stress into residual compressive stress and improve the comprehensive performance of the cladding layer, but also can enable the surface of the cladding layer to be smooth and tidy, and can meet the surface quality and size requirements of most parts.

Description

technical field [0001] The invention belongs to the field of surface strengthening of metal materials, and in particular relates to a method for strengthening laser cladding layers by high-frequency vibration rolling. Background technique [0002] Laser cladding technology uses a high-energy laser beam to rapidly heat up the surface layer of the powder with specific performance components and the substrate to melt, and forms a molten pool in the spot area. After the spot is removed, the molten pool cools rapidly, forming a metallurgical bond with the substrate and having certain properties. Surface coating, thereby improving the wear resistance, corrosion resistance, heat resistance, oxidation resistance and electrical properties of the material surface. This technology has been widely used in many fields such as material surface modification, remanufacturing engineering and additive manufacturing. [0003] Due to the uneven energy distribution of the spot formed by the hig...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22F1/10C23C24/10
CPCC23C24/103C22F1/10
Inventor 张海峰沈文博赵昌龙
Owner CHANGCHUN UNIV
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