Experimental Study on Laser Ablation Texture-Assisted Grinding of Tungsten Alloy

Abstract

In order to machine the tungsten alloy with high efficiency, low damage and precision, laser ablation texture technology and precision grinding technology were combined to carry out grinding experiments of tungsten alloy and laser ablation texture-assisted grinding experiments. The advantages of laser ablation texture-assisted grinding tungsten alloy were investigated by comparing of the surface morphology, grinding force and surface roughness between ordinary grinding and laser ablative texture-assisted grinding. The results demonstrate that the surface morphology of ordinary grinding tungsten alloy was poor, the surface roughness was relatively high and the grinding force was relatively large. The surface morphology of the laser ablation texture-assisted grinding tungsten alloy processed by laser ablation texture was improved, the surface roughness decreased by 0.023 µm–0.204 µm, the normal force decreased by 49.91–59.46% and the tangent force decreased by 44.11–58.49%. Meantime, for the area ratio of texture A being the most, the grinding effect was related to the area ratio of texture, and the lowest grinding force and the best surface quality were observed on the tungsten alloy with the laser ablated texture A; the grinding forces and roughness of the other textures’ workpiece was similar and close because of their similar area ratios. The results demonstrate that laser ablation texture-assisted grinding of tungsten alloy could improve machining quality and reduce grinding force, which would provide guidance for realizing the high efficiency and precision machining of tungsten alloy.

Metal Particle Pencil Beam Spray-Coating Method for High-Density Polymer–Resin Composites: Evaluation of Radiation-Shielding Sheet Properties

“…This study used microtungsten particles (tungsten, W, 99.9%, <5 µm, NanGong XinDun Alloy Spraying Co. Ltd., Xingtai, China) and high-density PE (HDPE-S, molecular weight: 10,000–140,000, Songwon, Korea) as the shielding and base polymer materials, respectively. The tungsten powder was pulverized into particles with diameters ≤5 µm using ultrasonic grinding equipment and dried at 70 °C for 12 h before use [ 30 ]. Tungsten was coated with a polymer material and mixture for the shielding sheet.…”

Microstructure and High-Temperature Ablation Behaviour of Hafnium-Doped Tungsten-Yttrium Alloys

“…W is a refractory metal with the highest melting point of 3410 °C compared to those of the others. In addition, it exhibits excellent properties, such as high density, high chemical stability, low vapor pressure, and low coefficients of thermal expansion, which increase its wide applicability [ 1 , 2 , 3 , 4 , 5 ]. Recently, the high-temperature applications of W, such as in fusion reactors and hypersonic vehicles, have received considerable attention.…”