Polishing Parameters Research Articles

基于离散元模拟的白米仿真参数标定

Aiming at the lack of discrete element simulation models and parameters for rice polishing, grading, color sorting and other technologies and equipment, and the difficulty of guiding equipment design and optimization through simulation, this paper calibrates the simulation parameters of white rice based on angle of repose (AOR) test and simulation methods. Huanghuazhan and Dongnong 429 white rice were selected as research object. Numerical model of white rice was established by multi-sphere filling. According to physical test and references, the simulation parameter range of white rice particles was determined. Plackett-Burman test was used to screen parameters, and it was found that the particle-particle static friction coefficient and particle-particle rolling friction coefficient had significant effects on the AOR of white rice. The regression model between the AOR and the significance parameter was established according to the central composite design method. The simulation parameter combination that has significant influence on the physical AOR was determined through the optimization design, and verified by the simulation test. The simulation AOR was compared with the physical AOR, and the relative error of the two kinds of white rice was less than 3%. The results show that the calibration method proposed in this study can accurately simulate the physical AOR test, which can provide reference for discrete element simulation of white rice processing.

Effect of polishing on milling, nutritional properties, and optimization of polishing process parameters for kodo and browntop millets: A response surface methodology approach

AbstractMillets are termed ‘Nutri‐cereals’ as they possess exceptional nutrition profiles. They undergo several processing operations from farm to fork. Polishing is one of the important primary processing operations of millets that facilitates de‐branning. The current work aims to investigate the effect of polishing process parameters like grain's initial moisture content, the rotational speed of polisher, polishing time, on milling yield, nutritional losses of kodo, and browntop millets; to optimize the polishing process through response surface methodology. The polisher speed was found to influence milling and nutritional properties in both the millets whereas, the effect of grain's initial moisture was mostly observed in some responses of browntop millet. Kodo millet polishing at 10% initial moisture content, 1900 rpm for 2 min, and browntop millet polishing at 10% initial moisture content, 1300 rpm for 8 min were obtained as optimum polishing conditions. The degree of polishing and head grain yield at optimum conditions were in the range of 3.5%–4.0%, and 84%–92%, respectively. Less than 15% of nutritional losses were observed at optimum polishing conditions.Practical applicationsIndiscriminate polishing of millets has become most common industrial practice resulting in less head yield and high nutritional losses. Form the current study, both food processors and researchers get a brief knowledge on the effect of every polishing parameter such as grain moisture content before polishing, rotational speed of abrasive roller in polisher, time of polishing on milling losses and proximate compositions. The optimized process parameters can be directly employed in industrial polishing applications to produce polished grains with higher head yield and very minimal nutritional losses.

Study of Modified Offset Trajectory for Bonnet Polishing Based on Lifting Bonnet Method.

The inability to converge at the edge of a workpiece during polishing affects the edge profile accuracy and surface quality of the workpiece. In this study, a bias trajectory generation method based on the lifting bonnet method that can maintain the morphology of polished edges is presented. Firstly, by establishing the polishing parameters and the decreasing rule in line with the principles of the lifting bonnet method, we obtained the residual height spacing, the radius of the polishing area, the centre offset position, and the pressing depth for each offset trajectory. Subsequently, the modified bias trajectory algorithm correction coefficients were obtained by fitting the edge trajectories using cubic Bessel curves, which were multiplied with the bias amount to obtain the final modified bias trajectory. Finally, an experiment was designed to compare the edge effect of the modified bias trajectory with the traditional grating trajectory. The experimental findings indicate that the reduction in edge collapse following the implementation of the modified offset trajectory was 1.30 μm. In contrast, the edge collapse after polishing with the traditional grating trajectory amounted to 98.67 μm. Moreover, the edge collapse ensuing traditional polishing trajectory was 75.9 times more pronounced than that observed after using the modified offset trajectory. It is shown that the modified bias trajectory method can not only maintain the original edge morphology of the workpiece but can also promote the convergence of the edge effect to a certain extent.

Surface morphology and oxidation evolution of glow discharge polymer capsules during tumble polishing

Glow discharge polymer (GDP) capsules are often used as the ablation layer in laser inertial confinement fusion (ICF) research, because of its excellent properties in low X-ray opacity, high tensile strength, and high thermal conductivity. The isolated surface defects and distribution of oxygen content on the surface of GDP capsules can lead to the increase of hydrodynamic instability and the decrease of compression efficiency. In this work, by using media spheres and silica nanoparticles, a tumble polishing device for GDP capsule polishing is built to improve the surface morphology. The effects of polishing parameters on the surface roughness and oxygen content of GDP were investigated. The test results show that tumble polishing can effectively remove convex defects, only 24 identified defects with a height below 231 nm were found after 144 h polishing, reduce the surface roughness (∼10 nm) and improve the surface quality of GDP capsules. Moreover, the oxygen content distribution on the surface of GDP is uniform after tumble polishing. And the depth analysis results show that the tumble polishing has no obvious effect on the change of oxygen content in GDP shell under the surface layer.

Parameters optimization of electrolytic plasma polishing of austenitic stainless steel and surface performance analysis

Electrolytic plasma polishing is a new type of surface finishing technology, widely used for high-quality polishing of metals and alloys due to its excellent processability. In this paper, the austenitic stainless steel (302) is the processing material, and the electrolyte temperature, electrolyte concentration, voltage, and polishing time are used as influencing factors. The surface roughness of the material is used as the evaluation index for electrolytic plasma polishing experiments. The orthogonal experimental group is designed to obtain the best process parameters of electrolytic plasma polishing through range analysis, and the influence laws of various factors on surface roughness is studied. The property of the polished sample from the aspects of surface morphology, elemental composition, X-ray diffraction analysis, hardness changes, and corrosion resistance are characterized. The experimental results show that the surface profile of the polished sample has better consistency, and overall it is flat and smooth, with the original scratches are completely removed. The surface roughness is significantly reduced from the initial 0.3–0.076 μm. The content of Cr element has increased to a certain extent, while the content of Fe element has decreased, and surface impurities have been removed. There is no phase transition on the surface of the sample, the diffraction peak intensity significantly increases, the half width prominently decreases, the crystalline grain size increases, and the surface hardness decreases. During electrochemical test, the self-corrosion potential increases, the self-corrosion current density decreases, and the corrosion resistance of the sample surface increases.

Multi-pole magnetorheological shear thickening polishing on inner surface of aluminum alloy slender tubes

The aluminum alloys slender tubes with high surface quality are required to improve the components performance. The inner surface polishing of slender tubes becomes a challenge because of the machining space limitation. In this work, a multi-pole magnetorheological shear thickening polishing (MP-MSTP) method, combining the dual excitation of magnetorheological principles and shear thickening behavior, is proposed for aluminum alloy slender tubes polishing. The magnetic field generator was designed integrating four cylindrical Nd-Fe-B radial magnetic poles. The magnetic flux density is investigated in the polishing zone based on finite element analysis (FEA) and experimental measurements. Mathematical modeling of material removal rate (MRR) was established based on single abrasive particle. The feasibility of the MP-MSTP method for aluminum alloy slender tube was verified by computational fluid dynamics (CFD) simulation analysis and experimental measurements. Polishing experiments were carried out on the inner surface of aluminum alloy slender tubes to investigate the effect of various processing parameters on surface roughness, including carbonyl iron particles (CIPs) and silicon carbide (SiC) abrasive particle sizes, working gap and workpiece rotational speed. The surface roughness was reduced to 155 nm from the initial 480 nm under the optimal polishing parameters. A smooth surface without micro-convex peaks and deep scratches was obtained after 50 min polishing based on ultra-depth-of-field microscope and SEM observation.

Numerical Simulation and Validation of Laser Polishing of Alumina Ceramic Surface.

Laser polishing is a noncontact and efficient processing method for surface treatment of different materials. It removes surface material and improves its quality by means of a laser beam that acts directly on the surface of the material. The material surface roughness is a major criterion that evaluates the polishing effect when alumina ceramics are polished by a laser. In this study, the effects of three factors, namely, laser power, scanning speed, and pulse frequency, on the surface roughness were investigated through orthogonal tests. The optimum polishing parameters were obtained through a comparison of the experimental results. Compared to the initial surface roughness (Ra = 1.624 μm), the roughness of the polished surface was reduced to Ra = 0.549 μm. A transient two-dimensional model was established by the COMSOL Multiphysics 5.5, and the flow condition of the material inside the molten pool of laser-polished alumina ceramics and the surface morphology of the smoothing process were investigated by utilizing the optimal polishing parameters obtained from the experiments. The simulation results showed that in the process of laser polishing, the fluid inside the molten pool flowed from the peaks to the valleys under the action of capillary force, and the inside of the molten pool tended to be smoothened gradually. In order to verify the correctness of the numerical model, the surface profile at the same position on the material surface was compared, and the results showed that the maximum error between the numerical simulation and the experimental results was 17.8%.

Atomistic study on the effect of the size of diamond abrasive particle during polishing of stainless steel

Nanofinishing or polishing helps to reduce surface roughness, which further improves both the optical and chemical properties of engineering materials. During the polishing of any engineering material, the size of abrasive particles plays a significant role in efficient polishing. In this paper, stainless steel 304 (or SS304) is selected for polishing through diamond abrasives with varying particle sizes using molecular dynamics simulations (MDS). It is found that the diamond abrasive particle initially causes elastic deformation due to the attractive force between the abrasive particle and the workpiece surface. As the size of the abrasive particle increases, plastic deformation occurs by spreading the dislocations on the surface only, which helps to annihilate the dislocations after polishing. It is revealed that the smaller abrasive particles (<3 nm) get trapped due to strong chemical bonding with the surface of the workpiece, and the abrasive particles start depositing on the workpiece instead of material removal. In this paper, it is proposed that an optimum size of abrasive particles is required for a given set of polishing parameters to achieve efficient material removal and minimum surface and subsurface defects. Thus, the present study is worthwhile for efficient polishing or nanocutting of stainless steel through monocrystalline diamond.

Study on incompatible mechanism in chemical mechanical polishing of the novel graphite/diamond composite

The novel graphite/diamond composite (Gradia) possesses semiconducting instinct characteristics with controllable resistivity. Surface finishing plays a crucial role in using Gradia. However, controlled removal of the Gradia surface is challenging because physical and chemical properties differ between the graphite and diamond components. The impact of incompatibility on the material removal of Gradia is unclear. This study employed chemical mechanical polishing (CMP) to finish the Gradia surface with K2FeO4 oxidant. First, the sub-nano-scale roughness of the Gradia surface was attained by applying optimized polishing parameters. Then, the polished subsurface was examined. The incompatible graphite and diamond lattice distortion was the primary damaged mechanism rather than amorphization. The chemical reaction in CMP was analyzed with X-ray photoelectron spectroscopy and reactive molecular dynamics simulation. The carbon atoms formed a variety of chemical groups with the oxidizing of hydroxyl. The chemical activity of the graphite phase was superior to the diamond phase, leading to more types of reaction and a higher percentage of products. In the material removal stage, experimental observations and simulation analyses revealed that the diamond of sp3-carbon transformed to sp2-carbon, softened, and subsequently removed together with the graphite by abrasive scratching.

Micro-milling tool mark removal mechanism by fluid jet polishing and its application for the precision manufacturing of micro-fluidic chip molds

The surface quality of micro-channels has a significant impact on their functional performance. Ultra-precision polishing of the micro-channel (mold) is essential to meet the requirements of the equipment. The tool marks resulting from the former manufacturing procedure such as micro-milling should be removed in the polishing process. Fluid jet polishing (FJP) is a promising method to achieve high surface quality as well as superior applicability to the small structure unit. However, the effect of the initial surface morphology and polishing parameters on the tool marks removal capacity in FJP is not clear. The manufacturing parameters are determined by trial and error approach, which is time-consuming and costly. In this paper, the tool mark removal capability of FJP was investigated theoretically and experimentally considering the effect of tool mark interval and abrasive size. Computational fluid dynamics (CFD) simulation of micro-channel polishing was conducted to investigate different abrasive impact angles with different abrasive sizes. The material removal characteristics at different stages were revealed to explain different polishing performance due to the variation of tool mark interval and abrasive size. This study can provide solid scientific basis for the ultra-precision finishing of micro-channel obtained by micro-milling and avoid invalid polishing due to the inappropriate initial surface.

High-precision turning and ultra-smooth direct polishing of aluminum alloy mirrors.

Due to the high surface roughness requirements of aluminum alloy mirrors used in the visible light band, there are still great challenges in single point diamond turning of high-surface quality aluminum alloy mirrors. In this paper, a processing method for aluminum alloy mirrors is proposed. Based on single point diamond turning technology, the prediction model of aluminum alloy surface roughness was established. The mapping relationship between the surface roughness of the aluminum alloy mirror and each turning parameter was obtained, and the maximum possible surface quality was achieved. On the basis of the turning results, the method of small tool polishing was used to remove the turning texture generated by the copy effect of the tool arc radius, suppress errors of the medium and high-frequency, and reduce the surface roughness. The single abrasive removal efficiency model was established and mechanical removal in the polishing process was analyzed. Combined with the chemical action in the polishing process, two types of polishing liquid-acidic and neutral, were prepared and analyzed. The optimal polishing parameters were obtained through multiple single-factor experiments. On the basis of this, the surface roughness of the aluminum alloy after turning was optimized. The results show that the value was reduced from 4.811 to 1.482 nm, an increase of 69.2%. This method can effectively improve the machining accuracy of aluminum alloy mirrors and provide an important process guarantee for the application of aluminum alloy materials in visible-light systems.

Ultrasonic-Assisted Surface Finishing of STAVAX Mold Steel Using Lab-Made Polishing Balls on a 5-Axis CNC Machining Center.

The inconvenience of conventional wool ball polishing is that the surface finishing process should be equipped with a slurry container. The main objective of this research is to develop an ultrasonic-assisted surface finishing process for STAVAX mold steel on a 5-axis CNC machining center, by using new lab-made rubber polishing balls containing the abrasive aluminum oxide instead of the traditional wool ball polishing. In total, five types (type A to type E) of new rubber-matrixed polishing balls with a composite of nitrile butadiene rubber (NBR), an abrasive of aluminum oxide, and an additive of silicon dioxide have been developed. The performance of the composites with different grain sizes (0.05 μm to 3 μm) and concentrations of the abrasive of aluminum oxide have been investigated. The effects of multiple polishing passes on the surface roughness improvement for the lab-made polishing balls have also been investigated in this study. A surface roughness of Ra 0.027 μm on average was achieved by using the multiple polishing process of E-C-B-A. The volumetric wear of the lab-made polishing balls, using ultrasonic vibration-assisted polishing, can be improved from about 12.64% (type A) to 65.48% (type E) compared with the non-vibration-assisted polishing. The suitable combination of the ultrasonic vibration-assisted polishing parameters were an amplitude of 10 μm, a frequency of 23 kHz, a spindle speed of 5000 rpm, a feed rate of 60 mm/min, a stepover of 20 μm, a penetration depth of 180 μm, and a polishing pass of E-C-B-A, based on the experimental results. The surface roughness improvement on a test carrier with a saddle surface has also been presented by using the ultrasonic vibration-assisted polishing with the lab-made polishing balls.

Finishing Additively Manufactured Ti6Al4V Alloy with Low-Energy Electrical Discharges.

Additive manufacturing has garnered significant interest in various industries due to its flexibility and capability to produce parts with complex shapes. However, issues related to surface quality, such as roughness and microstructural defects, necessitate the use of post-processing techniques to achieve the desired properties. Ti6Al4V alloy, produced additively, was finished using low-energy discharges, and the new surface integrity properties resulting from the induced heat energy were investigated. To further understand the influence of discharge energy on the formation of the new layer, roughness parameters and power spectral density were used to characterize the surface topography. SEM and EDS analyses were performed to examine the morphology and microstructural defects such as microcracks. The results indicate that the heat energy induced by the discharge improved the properties of the surface. SEM analysis revealed that the new layer was characterized by a reduction in defects such as unmelted particles, the balling effect, and microcracks. At the lowest investigated discharge energy of E = 0.21 mJ, surface roughness, Sa, was reduced by about 69%, which is equal to about 2 μm, accompanied by a significant decrease in microcracks. EDS analysis indicated that the diffusion of copper and zinc from the electrode to the top surface was related to the discharge energy. Furthermore, prediction models of the influence of wire electrical discharge polishing parameters, including discharge energy, wire speed, and time interval, on the surface roughness and material removal rate (MRR) were developed using the response surface methodology.

Effect of electropolishing parameters of WE43 magnesium alloy on corrosion resistance of artificial plasma

In this study, an improved technique is proposed to obtain bare metal surfaces for implants, stents, and medical devices. The aim is to enhance the corrosion resistance and biocompatibility of the WE43 magnesium alloy by modifying its surface characteristics through electropolishing. This is achieved using an electrolytic mixture with varying concentrations of HNO3 and C2H5NO3. The morphology, microstructure, chemical composition, and phase structures of the coating are analyzed by SEM, XPS, and XRD. The corrosion resistance of the surface was analyzed by polarization and bio-corrosion behavior tests. During the electropolishing process, unstable Mg(NO3)2 is easily formed by Mg and HNO3. However, the addition of C2H5OH helps release C2H5NO3 and HNO3 ions from the electrolyte, leading to the formation of a thin and dense layer of MgO on the alloy surface. The results revealed that surface roughness significantly affected the corrosion resistance of the alloy. Specifically, the oxide layer thickness gradually decreased with increasing voltage during electropolishing. However, it was observed that higher electropolishing voltages (beyond 0.5 V) caused surface cracking and reduced the corrosion resistance of the alloy. Therefore, it is necessary to investigate the optimal electrolytic polishing parameters to enhance the corrosion resistance of WE43 magnesium alloy. According to the experimental results, the optimal electrolytic polishing parameters for WE43 magnesium alloy were determined as follows: 2.0 wt% HNO3 and C2 H5OH, a voltage of 0.45 V, and a time of 300 s. These parameters also exhibited the best biocompatibility characteristics.

Effects of scanning speed and scanning times on surface quality of line spot laser polishing of nickel-based superalloys

Nickel-based superalloy (DZ411) is widely used in aerospace and other fields due to its excellent physical properties, and the improvement of surface roughness is necessary in practical applications. In this paper, a machining platform that uses a beam shaper to modulate a circular spot into a line spot is used to perform laser polishing on the initial material surface by changing the scanning speed and scanning times, respectively. The results show that the line spot laser polishing can make the surface shallow melting to achieve the purpose of smoothing the surface. By changing the number of scanning times, the roughness of the polished surface Ra can be reduced from 0.702 μm to 0.354 μm. The percentage of improvement in surface roughness is 49.5%. The formation of oxides on the surface results in a slight increase in microhardness. In the test of changing the scanning speed, the roughness of polished surface roughness Ra can be reduced to 0.390 μm, Ra first decreases and then increases as the scanning speed increases. The polishing surface processing speed can reach 26.209 cm2/min, which has the potential to achieve efficient laser polishing. This research work can provide guidance for the optimization of line spot laser polishing parameters based on beam modulation and provide process data support for the efficient processing of nickel-based superalloys with line spot.

Comparative Analysis of Finite Element Simulation and Experiment on the Polished Surface Quality of Hard Anodized Film of Aluminum Alloy

According to the abrasive morphology and distribution of sandpaper surface, the finite element model of hard anodic oxide film polishing was established by using ABAQUS finite element software, and the hard anodic oxide film and aluminum alloy matrix were defined respectively. The effects of hard anodic oxide film polishing process, polishing surface quality and polishing parameters on the polishing force were simulated. The polishing surface quality and polishing force simulated by finite element model were verified by experiments. The results show that in the polishing process, the residual stress of polishing surface is mainly distributed in the range of 0.0034mm, and the chips produced by polishing are mainly broken and long strips with microscopic morphology, and polishing mainly depends on the front part of abrasive particles in the feeding direction of sandpaper. Under the action of abrasive particles of sandpaper, the results of finite element simulation and test show that there are certain grooves on the surface of oxide film. The finite element simulation of the normal polishing force of hard anodic oxide film is consistent with the polishing test results. During the process of polishing hard anodic oxide film, the normal polishing force increases as the polishing speed increases; the normal polishing force increases as the polishing removal amount increases; the polishing removal amount parameter has a greater degree of influence on the polishing force.

Effect of process parameters on surface roughness of NiCu alloy in fluid jet polishing

Fluid jet polishing is a non-contact and flexible type of polishing process for generating high-quality surface finish in optical dies manufactured from ductile materials like Monel-400 (NiCu alloy). This article presents an investigation of fluid jet polishing of Monel-400 die material with a 3D printed Ti64 tool and silicon carbide abrasive slurry with an effect of pressure, stand-off distance and polishing time on the surface finish. The response surface methodology method was used to develop the experimental plan and Analysis of Variance analysis was carried out to identify the optimized values of the control parameters to maximize the percentage change in surface roughness. The validation of the developed regression model was done by polishing the plate of Monel-400 using the optimized parameters: the pressure of 9.6 bar, stand-off distance of 32.2 mm and polishing time of 170 s. The optimized fluid jet polishing parameters successfully generated a surface roughness of 90 nm in one of the experimental tests. The predicted results were in close agreement with the experimental results. Further improving the polishing efficiency, the optimal feed rate of 20 mm/min was used to polish the 40 mm × 50 mm Monel-400 plate, the surface roughness was reduced from 300 to 80 nm in 10 multiple passes showing the reduction in peaks and valleys with the surface improvement of 73.33%. The result shows that the fluid jet polishing process tends to improve the life span of Monel-400 die steel workpieces which is beneficial for the application of various industrial components such as optical lenses, marine applications, automotive components and defence applications.

Air polishing therapy in supportive periodontal treatment: a systematic review

The aim of this study was to analyze tooth surface roughness and clinical parameters by a systematic review of the literature to compare the efficacy of air polishing with hand or ultrasonic instrumentation during supportive periodontal therapy (SPT). This study used a research question based on the PICO method. Bibliographic research was performed using four different databases. For the search of the articles, the work was divided into two parts: the first part analyzed the clinical parameters of air polishing in supportive periodontal therapy, and the second part analyzed the effects of air polishing on hard tissues. Of 164 articles concerning clinical parameters, 49 met the inclusion criteria; from 64 articles concerning hard tissues, it reached 4. Excluding these doubles, 12 were chosen for the literature review: eight RCTs, one retrospective cohort study, and three in vitro studies. The scientific literature has shown that air polishing, scaling, and root planing in supportive periodontal therapy give similar clinical results. However, air polishing seems to preserve the hard tissues of the tooth more than the traditional treatment with ultrasonic or manual instrumentation.

Investigation on Polishing the Concave Surface of Zirconia Ceramics with Magnetic Compound Fluid Enhanced by Hydration Reaction

Zirconia ceramics are prominent engineering materials and are widely used in computers, consumer electronics, and the fifth-generation communication industry. However, zirconia ceramics are a typical hard-to-cut material, and the product structures are more complex as the demanding on the industry increases. In this case, the polishing efficiency should be improved for meeting these requirements. To overcome the problem of polishing concave surfaces of zirconia ceramics, a small polishing tool with a magnetic compound fluid (MCF) was invented. The effect of the polishing parameters on the surface roughness and material removal rate was analyzed by an L9(33) orthogonal experiment. The weight ratio of the parameters was also studied based on the experimental results. With the combination of chemical and mechanical functions, the polishing characteristics were further examined. Based on the soaking experiments, the material removal mechanism is discussed. The results are as follows: (1) the optimal polishing parameters were the revolution speed of the MCF carrier nc of 400 rpm, the working gap h of 0.1 mm, the CIP size D of 5 μm for better surface roughness, the revolution speed of the MCF carrier nc of 400 rpm, the working gap h of 0.1 mm, and the CIP size D of 7 μm for a higher material removal rate. The impact degrees on surface roughness and material removal rate were a revolution speed of the MCF carrier of 54% > working gap of 31%> CIP size of 15% and working gap of 40% > revolution speed of the MCF carrier of 32% > and CIP size of 18%, respectively. (2) Surface roughness was rapidly reduced in the first 20 min and tended to be stable in the last 10 min of polishing. A circular polished area was observed on the flat workpiece for studying the typical material removal curve, and the deepest point was found at the fringe of the material removal curve. The concave workpiece was polished successfully, and the best surface roughness Ra reached 1 nm and 1.2 nm. (3) A pH = 10 with a sodium hydroxide (NaOH) solution has a greater performance in hardness reduction. The chemical and mechanical functions were combined to remove material to enhance the polishing efficiency. All in all, the proposed polishing method with a combination of a small MCF polishing tool and hydration reaction was effective for polishing zirconia ceramics.

Ablation oxidation and surface quality during laser polishing of TA15 aviation titanium alloy

TA15 titanium alloy is sensitive to temperature, and it is one of the main materials used in aircraft bearing parts that operate for long periods of time at 500 °C. The thermomechanical processing of this alloy is difficult to control because of its high activity and oxidation. In the present research, nanosecond pulse lasers of various powers were used to polish the TA15 surface. The surface morphology, microstructure evolution, oxidation depth and mechanical properties were investigated. The results revealed that the initial sample has a rough surface, and both high-power and low-power lasers can significantly decrease the surface roughness. Three methods, SEM morphology analysis, EDS line scanning and EDS mapping, are used to detect the oxidation depth of the polished zone. The TEM images and XRD patterns show typical Al2O3, Ti2O3 and TiO2 constituents, which affect the tensile strength of the alloy. A low-power laser has a better polishing effect than a high-power laser; the oxidation depth with a high power is approximately 100 μm, while the oxidation depth with a low power is less than 10 μm. The polished surface roughness parameters Ra (arithmetical mean deviation of the profile) and Sa (arithmetical mean height of the scale limited surface) obtained with a low-power laser are reduced from approximately 6 μm–3.197 μm and 4.298 μm, respectively.