Some experimental studies on CO2 laser cutting quality of polymeric materials

2008 ◽  
Vol 198 (1-3) ◽  
pp. 99-104 ◽  
Author(s):  
J. Paulo Davim ◽  
Nuno Barricas ◽  
Marta Conceição ◽  
Carlos Oliveira
Keyword(s):  
Co2 Laser ◽  
Laser Cutting ◽  
Experimental Studies ◽  
Polymeric Materials

scholarly journals Selected Properties of the Surface Layer of C45 Steel Parts Subjected to Laser Cutting and Ball Burnishing

Materials ◽  
2020 ◽  
Vol 13 (15) ◽  
pp. 3429 ◽  
Author(s):  
Agnieszka Skoczylas ◽  
Kazimierz Zaleski
Keyword(s):  
Surface Layer ◽  
Residual Stresses ◽  
Laser Cutting ◽  
Experimental Studies ◽  
Hardened Layer ◽  
Ball Burnishing ◽  
Absolute Value ◽  
The Impact ◽  
Compressive Residual Stresses

In this article, we report the results of experimental studies on the impact of ball burnishing parameters on the roughness, microstructure and microhardness of the surface layer of laser-cut C45 steel parts. We also analysed the distribution of residual stresses generated in the surface layer of these parts. Laser-cut parts often require finishing to improve the quality of their surface. The tests performed in this study were aimed at assessing whether ball burnishing could be used as a finishing operation for parts of this type. Ball burnishing tests were performed on an FV-580a vertical machining centre using a mechanically controlled burnishing tool. The following parameters were varied during the ball burnishing tests: burnishing force Fn, path interval fw and the diameter of the burnishing ball dn. Ball burnishing of laser-cut C45 steel parts reduced the surface roughness parameters Sa and Sz by up to 60% in relation to the values obtained after laser cutting. Finish machining also led to the reorganization of the geometric structure of the surface, resulting in an increase in the absolute value of skewness Ssk. This was accompanied by an increment in microhardness (maximum microhardness increment was ΔHV = 95 HV0.05, and the thickness of the hardened layer was gh = 40 µm) and formation of compressive residual stresses in the surface layer.

scholarly journals Modernization of grinding machines of grain cleaning machines

2018 ◽  
Vol 224 ◽  
pp. 05009 ◽  
Author(s):  
Aleksey Dorokhov ◽  
Victor Khamyev ◽  
Kirill Lepeshkin
Keyword(s):  
Mathematical Models ◽  
Seed Treatment ◽  
Experimental Studies ◽  
Polymeric Materials ◽  
New Type ◽  
Grinding Machines ◽  
And Performance ◽  
Made In

As a result of the analysis of developed earlier mathematical models of the process of seeds purification on a two-tier lattice mill of polymeric materials the possibility of significant improvement in the quality of seed treatment and performance at the same quality at the expense of more rational technological schemes and modernization of the sieve camp’s were revealed. Constructive changes were made in the lattice mill with using a new type of polymer sieves. Result of this experimental studies confirm the identified possibility of intensification of the process of seed cleaning - completeness of waste allocation increased from 0,653 to 0.75, i.e. 15 %, performance for the same quality of cleaning have increased by 24%.

scholarly journals Peculiarities in polymer laser cutting

2016 ◽  
Vol 1 (10) ◽  
pp. 33-38
Author(s):  
Юрий Голубенко ◽  
Yuriy Golubenko ◽  
Александр Богданов ◽  
Aleksandr Bogdanov ◽  
Екатерина Тюльпанова ◽  
...  
Keyword(s):  
Laser Beam ◽  
Co2 Laser ◽  
Laser Cutting ◽  
Polymeric Materials ◽  
Process Quality ◽  
Structure And Properties ◽  
A Value ◽  
Material Process ◽  
Optimum Working

In this paper the application of laser cutting methods for polymeric materials working is under consideration. The authors analyze the laser beam effect upon polymers reasoning from the peculiarities of their structure and properties. The methods to eliminate defects at polymer laser cutting, the methods to increase the interaction effectiveness of radiation with material, process quality are offered. To determine the dependences of a cut width and a value of flash formed at the beam input and its output of material worked there were carried out experiments at different rates and constant capacity of CO2-laser. According the results of the researches carried out the optimum working modes were established.

scholarly journals Prediction and Analysis of Surface Quality of Northeast China Ash Wood during Water-Jet Assisted CO2 Laser Cutting

2021 ◽  
Vol 9 (1) ◽  
pp. 119-128
Author(s):  
Ting Jiang ◽  
Chunmei Yang ◽  
Yueqiang Yu ◽  
Bakary S. Doumbia ◽  
Jiuqing Liu ◽  
...  
Keyword(s):  
Surface Quality ◽  
Co2 Laser ◽  
Northeast China ◽  
Laser Cutting ◽  
Water Jet

Investigation of the effect of nanofillers on the quality of CO2 laser cutting of FRP nanocomposites

2016 ◽  
Vol 90 (5-8) ◽  
pp. 2047-2061 ◽  
Author(s):  
S. Nagesh ◽  
H. N. Narasimha Murthy ◽  
Ratna Pal ◽  
S. D. Supreeth Dev ◽  
M. Krishna
Keyword(s):  
Co2 Laser ◽  
Laser Cutting

scholarly journals Laser Cutting of High Density Poly Ethylene (Hdpe) Pipes Pe100 using Co2 Gas Laser

2019 ◽  
Vol 9 (1) ◽  
pp. 6193-6199 ◽  
Keyword(s):  
Co2 Laser ◽  
Laser Cutting ◽  
Oil And Gas ◽  
Low Cost ◽  
High Density ◽  
Frequent Use ◽  
Metal Pipes ◽  
Poly Ethylene ◽  
And Performance

High Density Poly Ethylene (HDPE) is one of the best materials for use in different environmental conditions. This is due to the mechanical, chemical and electrical specifications of this type, in terms of thermal insulation, lightweight, low cost, and most importantly the time factor. The molecular structure of the High Density Poly Ethylene material has made it the ideal choice for use in the pipe industry, and the transportation of various liquids, compared with the metal pipes and especially in the transportation of water, oil, and gas. And because of the frequent use, especially in the workplace. The need to use the cutting for these pipes has become necessary for the purpose of establishing networks for the transfer of fluids. In this research, the construction of holes in the pipes and measurements and angles of different for the purpose of taking advantage of these openings in the construction of networks. The laser was used as one of the modern cutting methods for the purpose of studying the efficiency and performance of CO2 laser cutting on High Density Poly Ethylene, especially on pipes, PN 16 PE 100, 110 mm diameter, and tested under a CO2 laser machine, by using a three different kinds of gases, such as the air and the nitrogen N2 , to estimate the changing and evaluate the quality of cutting with striation and kerf width of the High Density Poly Ethylene.

scholarly journals STUDY OF LASER CUTTING AND MARKING ON THE FILT WITH THE HELP OF A CO2-LASER

2019 ◽  
Vol 3 ◽  
pp. 143
Author(s):  
Lyubomir Lazov ◽  
Nikolay Todorov Dolchinkov ◽  
Jordan Shterev Ivanov ◽  
Madlen Nikolaeva Peneva ◽  
Denitsa Angelova Bojhanova
Keyword(s):  
Co2 Laser ◽  
Laser Power ◽  
Laser Cutting ◽  
Experimental Results ◽  
Laser Marking ◽  
Textile Products

Describe the parameters influencing the depth of the laser marking of textile products. Experimental results are presented to determine the quality of cuts on felt surfaces of different colors at specific parameters - power and speed. Approximately 100 extras were made on two materials with a change in laser power and speed. As a result, the optimal results for cutting and marking a felt are shown.  

Sign in / Sign up

Export Citation Format

Share Document