Investigating Plasma-Nozzle Wear Based on Processing Time and Current Ampere

2020 ◽  
Vol 987 ◽  
pp. 171-176
Author(s):  
Paphakorn Pittayachaval ◽  
Yanisa Aupkaew ◽  
Sirinat Sakhonkhan ◽  
Thittaya Sukan ◽  
Chirathorn Patchaikhonang
Keyword(s):  
Processing Time ◽  
Low Carbon Steel ◽  
Plasma Cutting ◽  
Low Carbon ◽  
Cnc Machine ◽  
Cutting Machine ◽  
Nozzle Wear ◽  
Digital Microscope ◽  
Relationship Of ◽  
Cutting Path

Plasma cutting machine widely uses in electrical conductivity industrial according to an accuracy dimension and minimum time consuming. A cutting surface and kerf are keys process parameter to establish process quality by controlling diameter of nozzle and size of electrode. Since kerf shape is crated base on nozzle diameter, while electrode is served plasma arc. This paper presents an investigating nozzle wear based on current ampere and processing time. The controlled variables are a plasma-cutting machine, Hypertherm powermax 45 xp, Bindee control CNC machine and cutting path as whorl specimen of low carbon steel. The current Ampere was handled at 35, 40, 45 A. The processing time was controlled at 1, 2, 3, 4, 5 minutes. The diameters of nozzle were measured using digital microscope. The experiments conducted based on ANOVA to establish the relationship of those parameters. The nozzle wear depended upon the current Ampere and processing time in which a regression equation was presented as a result.

scholarly journals Investigating Parameters That Effect to Wear of Plasma Nozzle

2018 ◽  
Vol 213 ◽  
pp. 01010 ◽  
Author(s):  
Paphakorn Pitayachaval ◽  
Muhammatsoifu Sato
Keyword(s):  
Cutting Speed ◽  
Cutting Parameters ◽  
Gas Pressure ◽  
Plasma Cutting ◽  
Cnc Machine ◽  
Cutting Machine ◽  
Cutting Surface ◽  
Nozzle Wear ◽  
Digital Microscope ◽  
Relationship Of

Plasma cutting machine normally applies to cut metal in electrical conductivity industrial according to an accuracy dimension and rapidly time consuming. A quality of this process is depend upon a cutting surface and kerf by controlling diameter of nozzle and size of electrode. Since kerf shape is crated base on nozzle diameter, while electrode is served plasma arc. This paper presents an investigating three cutting parameters: cutting speed, pressure gas, current ampere that affect to wear of plasma nozzle. The fixed variables are a plasma-cutting machine, Hypertherm powermax 45 xp, Bindee control CNC machine and specimens (100×100 mm.). The cutting speed was holed at 200, 300, 400 mm/min. The gas pressure was controlled at 6, 7, 8 bar. The current Ampere was handled at 40, 42, 45 A. The diameters of nozzle was measured using digital microscope. The experiments conducted based on ANOVA to establish the relationship of those parameters. The nozzle wear depended upon the current Ampere, the high gas pressure while the cutting speed was not effect to nozzle wear.

Effect of Plasma Cutting on the Fatigue Resistance of Fe510 D1 Steel

1999 ◽  
Vol 122 (1) ◽  
pp. 141-145 ◽  
Author(s):  
M. Chiarelli ◽  
A. Lanciotti ◽  
M. Sacchi
Keyword(s):  
Fatigue Resistance ◽  
Low Carbon Steel ◽  
Physical And Mechanical Properties ◽  
Research Programme ◽  
Fatigue Tests ◽  
Automatic Process ◽  
Plasma Cutting ◽  
Low Carbon ◽  
The University

The paper describes the results of a research programme, carried out at the Department of Aerospace Engineering of the University of Pisa, for the assessment of the influence of plasma cutting on the physical and mechanical properties of Fe510 D1, a low carbon steel widely used in carpentry. The activity started by observing that several industries rework plasma cut edges, particularly in the case of fatigue structures, in spite of the good quality of the plasma cut edges in a fully automatic process. Obviously, reworking is very expensive and time-consuming. Comparative fatigue tests demonstrated that the fatigue resistance of plasma cut specimens in Fe510 steel was fully comparable to that of milled specimens, as the consequence of the beneficial residual stresses which formed in the plasma cut edges. [S0094-4289(00)02201-5]

scholarly journals PENGARUH REGANGAN PADA MATERIAL LOGAM BAJA TERHADAP KEKERASAN DAN SIFAT GETARAN

2019 ◽  
Vol 9 (2) ◽  
pp. 387
Author(s):  
Helanianto Helan
Keyword(s):  
Raw Materials ◽  
Low Carbon Steel ◽  
Tensile Load ◽  
Hardness Test ◽  
Low Carbon ◽  
Average Hardness ◽  
Strong Material ◽  
Human Thinking ◽  
Complex Phenomena ◽  
Relationship Of

History shows the development of human thinking patterns that are more advanced in understanding, utilizing and further knowing the causes and results of the findings obtained. Humans find strong material, with complex phenomena and unknown compilation yet, but they have felt of great benefit. And with the development of knowledge, conventional and modern processes are carried out to achieve the goal. Namely with the methods carried out, managing the metal has a different impact than before, then the metals change physically and non-physically. This study aims to learn more about the relationship of metals treatment to hardness and the vibration that occurs in metal material that is disputed. This research uses experimental methods on materials with treatment and un-treatment to study the correlation, which is supported by the method of testing the hardness test and vibration test. The results show that increased strain on hardness and vibration patterns of metal have full or correlated. In this study, un-load raw materials was obtained an average hardness value of 52.28 HRB with an average vibration of 1.448 mm / s. While the specimen with tensile load obtained an average hardness of 52.34 HRB with an average vibration pattern of 1.7388 mm / s. These results show an increase in hardness of 0.115% and vibration of 20.028%, which is an increase in stretching effect. It can be concluded, however that increasing strain loads increase the hardness and vibration of low carbon steel equivalent ST-37.

scholarly journals Determining the processing modes of the low carbon steel by high-precision plasma cutting based on dimensionless complexes

2019 ◽  
Vol 297 ◽  
pp. 01007
Author(s):  
Aleksandr Loktionov ◽  
Nadezhda Gaar ◽  
and Аndrey Rakhimyanov
Keyword(s):  
Carbon Steel ◽  
High Precision ◽  
Sheet Material ◽  
Cutting Speed ◽  
Low Carbon Steel ◽  
Plasma Cutting ◽  
Low Carbon ◽  
Processed Material ◽  
Processing Modes ◽  
Steel St3

The results of the investigations on determining the processing modes during high-precision plasma cutting of low carbon steel based on the values of Peclet number and dimensionless power which provide the minimal value of deviation of the cut sides from perpendicularity are presented in the paper. The conditions of obtaining the cut of high quality from the viewpoint of minimizing the cut side deviation from perpendicularity are determined by cutting low carbon steel. The dependences of the cutting speed and the cut width on the processed material thickness, intended to determine the processing modes and adjustment of the linear dimensions are established. The investigations were made on the device of the thermal cutting “Termit PPl” based on the installation of the high-precision plasma cutting HiFocus 130i of Kjellberg firm by using the HiFocusplus technology. Low carbon construction steel St3 was chosen as an investigated material. The thickness of the sheet material constituted 4 mm, 6 mm, 10 mm, 16 mm and 20 mm.

Effect Study of Thermal Cutting Methods on the Edge’s Microstructure of High-Strength Steel Grade S700MC

2019 ◽  
Vol 946 ◽  
pp. 928-933
Author(s):  
Ivan A. Ilin ◽  
Anna A. Krasnoperova ◽  
Evgenii A. Sirotkin
Keyword(s):  
High Strength Steel ◽  
Laser Cutting ◽  
Low Carbon Steel ◽  
High Strength ◽  
Effect Study ◽  
Plasma Cutting ◽  
Low Carbon ◽  
Cutting Method ◽  
Thermal Cutting ◽  
Steel Grades

The paper presents the results of metallographic studies of laser and plasma cutting methods of high-strength steel for the purpose of its application for the preparation of sample edges without subsequent machining. It is shown that as a result of the thermal and physical-chemical processes in heat affected one (HAZ), there is a change in the phase and chemical composition of the metal. The depth of the HAZ is changed from 261 μm to 337 μm. The maximum hardness at the cutting edge is 410 HV10. On the surface after the laser cutting there is an oxidized layer of metal, saturated with oxygen, nitrogen and other gases as a result of contact with the oxygen jet and the surrounding air; its thickness is hundredths or even thousandths of a millimeter. A feature of the plasma cutting method is the formation of a deeper oxide layer on the surface with a thickness of 9...14 μm, in contrast to the laser cutting method. The analysis of existing research to improve the technology of repair welding of low-carbon steel is performed. The obtained results can be used in the development of high-strength steel grades welding technology in terms of preparation of edges for welding using thermal cutting methods, which are currently quite conservative.

scholarly journals Technological possibilities of high-precision plasma cutting in processing materials of different class

2018 ◽  
Vol 224 ◽  
pp. 01011 ◽  
Author(s):  
Andrey Rakhimyanov ◽  
Alexander Loktionov ◽  
Nadezhda Gaar
Keyword(s):  
Carbon Steel ◽  
High Precision ◽  
Low Carbon Steel ◽  
Production Costs ◽  
Plasma Cutting ◽  
Low Carbon ◽  
Technological Production ◽  
St3 Steel ◽  
Steel St3

Improving the technologies and equipment at a stage of the blank production in mechanical engineering greatly determines the reduction in the technological production costs. The use of modern technological complexes on cutting sheet materials provides a solution to tasks for increasing the accuracy of forming. Nowadays high-precision plasma cutting is developing. It can be considered as an alternative to the laser cutting in achieving high characteristics of the cut accuracy and quality. The paper under consideration presents the results of optimizing the processing speed for the existing schemes of high-precision plasma cutting in the range of the cut thickness from 1 mm to 30 mm for carbon steel, alloy steel and aluminum steel. The efficiency of using the technological scheme HiFocusplus for cutting such bimetallic compositions as “steel St3 + steel 12H18N10T”, “steel St3 + aluminum A5M”, “steel St3 + copper M1” is presented. It is determined that the best characteristics of the accuracy and quality of the cut are achieved in cutting the composition “steel ST3 + steel 12H18N10T” from the side of low-carbon steel. Cutting from the side of aluminum and copper respectively is optimal for such compositions as “steel St3 + aluminum A5M” and “steel St3 + copper M1”.

S.E.M.-T.E.M. Image Comparison

1971 ◽  
Vol 29 ◽  
pp. 132-133
Author(s):  
G. M. Greene ◽  
J. W. Sprys
Keyword(s):  
Electron Microscope ◽  
Low Carbon Steel ◽  
Secondary Emission ◽  
Low Carbon ◽  
Preparation Time ◽  
Actual Surface ◽  
Fine Detail ◽  
Transmission Electron ◽  
Transmission Study ◽  
Large Sections

The present study demonstrates that fracture surfaces appear strikingly different when observed in the transmission electron microscope by replication and in the scanning electron microscope by backscattering and secondary emission. It is important to know what form these differences take because of the limitations of each instrument. Replication is useful for study of surfaces too large for insertion into the S.E.M. and for resolution of fine detail at high magnification with the T.E.M. Scanning microscopy reduces sample preparation time and allows large sections of the actual surface to be viewed.In the present investigation various modes of the S.E.M. along with the transmission mode in the T.E.M. were used to study one area of a fatigue surface of a low carbon steel. Following transmission study of a platinum carbon replica in the T.E.M. and S.E.M. the replica was coated with a gold layer approximately 200A° in thickness to improve electron emission.

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