Fiabilitate si Durabilitate - Fiability & Durability No 2/ 2014 Editura “Academica Brâncuşi” , Târgu Jiu, ISSN 1844 – 640X

56

MOULDS THE PROCESSED BY ELECTRICAL EROSION

Dr. Ing. ANDREI TIRLA, Technical University of Cluj-Napoca

Drd. Ing. IOAN BADIU, Technical University of Cluj-Napoca

Prof.univ.dr.ing. MARCEL S.POPA, Technical University of Cluj-Napoca

ABSTRACT: The phenomenon of electro material dislocation consists of two objects electrically conductive at

a distance from one another and between which there is an electric potential difference. Suppose two objects

(parts) initially at distance and electric potential difference start to be close to each other. Distance that will

pierce the dielectric (the environment in which the two parts are air, water, oil) and will begin to show electric

discharge between the two parts is called "" gap. "After electrical arcing, a certain amount of matter will be

deployed in two parts. tampered If their arc will continue until the distance between the two parts will increase

(due to displacement of matter). electro material processing this destructive phenomenon is optimized and

exploited in constructively. Introducing two parts (part that is intended to be processed and the tool that will

perform the processing - where cars thread wire or electrode in a car with massive electrode) in a dielectric

liquid (distilled water or some oil compound) this phenomenon is amplified because the arc that occurs

between the tool and work piece by local vaporization of material creates a bubble of gas.

KEY WORDS :the phenomenon of electro-erosion, electrically conductive, temperature, electrical erosion

machine.

1.INTRODUCTION .

This creates, in dielectric fluid, a plasma bubble that quickly raise the temperature of

the area around 12000°C and that increases and accelerates the phenomenon of displacement

of molten material in the surface of the two electrodes. When the potential difference between

tool and work piece is interrupted, the sudden drop in temperature causes the gas bubble

implosion, creating dynamic forces which have the effect of design molten material out of the

crater formed. Then, the solidified material is eroded and removed in the dielectric by the

dielectric flow. These are microscopic phenomena but produced quickly and in large numbers

so that their combined effect becomes macroscopic. The amount of material displaced by

erosion of the electrode and the piece is asymmetric and depends heavily on certain

parameters like: polarity, thermal conductivity, melting point of the material that makes up the

piece and electrode characteristics and current applied between the electrode track.

2.MOULDS PROCESSING TECHNOLOGY.

This midsize car provide great dimensional accuracy. It is very suitable for high-

precision work fine. It can be equipped with linear or rotary exchanger electrodes, providing a

very high productivity.

Fiabilitate si Durabilitate - Fiability & Durability No 2/ 2014 Editura “Academica Brâncuşi” , Târgu Jiu, ISSN 1844 – 640X

57

Fig .1. Massive electrode electrical discharge machines ROBOFORM 2400.

Fig .2. The processing of by Orbit rectangular.

Fiabilitate si Durabilitate - Fiability & Durability No 2/ 2014 Editura “Academica Brâncuşi” , Târgu Jiu, ISSN 1844 – 640X

58

Fig .3. Electrical erosion the processing of molds.

Fig .4. The 3D Graphics mold the processed by electrical erosion.

Fiabilitate si Durabilitate - Fiability & Durability No 2/ 2014 Editura “Academica Brâncuşi” , Târgu Jiu, ISSN 1844 – 640X

59

Fig .5. The 3D Graphics mold the processed by electrical erosion.

Fig .6. 2D Graphics of the molds the processed by electrical erosion.

Fiabilitate si Durabilitate - Fiability & Durability No 2/ 2014 Editura “Academica Brâncuşi” , Târgu Jiu, ISSN 1844 – 640X

60

Fig .7. 2D Graphics of the molds the processed by electrical erosion.

3.EXPERIMENTAL RESULTS FROM THE POCESSING OF ELECTRICAL

EROSION.

To achieve bearing following values were obtained from experimental by erosionelectrical.

Fig .8. Table containing the values parameters of electrical erosion.

Fig. 9. The reporting of electric erosion productivity parameters.

Fiabilitate si Durabilitate - Fiability & Durability No 2/ 2014 Editura “Academica Brâncuşi” , Târgu Jiu, ISSN 1844 – 640X

61

Fig. 10. The connection between electrical erosion parameters.

Fig. 11. The reporting of electric erosion productivity parameters.

Fig. 12. The form 3D graphics parameters electrical erosion.

Fiabilitate si Durabilitate - Fiability & Durability No 2/ 2014 Editura “Academica Brâncuşi” , Târgu Jiu, ISSN 1844 – 640X

62

Fig. 13. Table containing the values parameters of electrical erosion.

Fig. 14. The form 3D graphics parameters electrical erosion.

Fig. 15. The form 3D graphics parameters electrical erosion.

Fiabilitate si Durabilitate - Fiability & Durability No 2/ 2014 Editura “Academica Brâncuşi” , Târgu Jiu, ISSN 1844 – 640X

63

Fig. 16. Table containing the values parameters of electrical erosion.

Fig. 17. The reporting of electric erosion productivity parameters.

Fig. 18. The connection between electrical erosion parameters.

Fiabilitate si Durabilitate - Fiability & Durability No 2/ 2014 Editura “Academica Brâncuşi” , Târgu Jiu, ISSN 1844 – 640X

64

Fig. 19. The reporting of electric erosion productivity parameters.

Fig. 20. Table containing the values parameters of electrical erosion.

Fig. 21. 3D Graphical form the pulse of time expressed as a percentage.

Fiabilitate si Durabilitate - Fiability & Durability No 2/ 2014 Editura “Academica Brâncuşi” , Târgu Jiu, ISSN 1844 – 640X

65

Fig. 22. 3D Graphical form the pulse of time expressed as a percentage.

Fig. 23. The form 3D graphics productivity expressed in percent and the values.

Fig. 24. 3D Graphical form the pulse of time expressed as a percentage.

Fiabilitate si Durabilitate - Fiability & Durability No 2/ 2014 Editura “Academica Brâncuşi” , Târgu Jiu, ISSN 1844 – 640X

66

Fig. 25. 3D Graphical form the pulse of time expressed as a percentage.

Fig. 26. 3D Graphical form the pulse of time expressed as a percentage.

Fig. 27. The form 3D graphics productivity expressed in percent and the values.

Fiabilitate si Durabilitate - Fiability & Durability No 2/ 2014 Editura “Academica Brâncuşi” , Târgu Jiu, ISSN 1844 – 640X

67

Fig. 28. 3D Graphical form the pulse of time expressed as a percentage.

Fig. 29. 3D Graphical form the pulse of time expressed as a percentage.

Fig. 30. 3D Graphical form the pulse of time expressed as a percentage.

Fiabilitate si Durabilitate - Fiability & Durability No 2/ 2014 Editura “Academica Brâncuşi” , Târgu Jiu, ISSN 1844 – 640X

68

Fig. 31. 3D Graphical form the pulse of time expressed as a percentage.

Fig. 32. Fig. 1. 3D Graphical form the pulse of time expressed as a percentage.

Fig. 33. The form 3D graphics productivity expressed in percent and the values.

Fiabilitate si Durabilitate - Fiability & Durability No 2/ 2014 Editura “Academica Brâncuşi” , Târgu Jiu, ISSN 1844 – 640X

69

Fig.34. The form 3D graphics parameters electrical erosion.

Fig. 35. Form 2D electrical erosion parameter values.

Fig. 36. Form 2D electrical erosion parameter values and equations of lines.

Fiabilitate si Durabilitate - Fiability & Durability No 2/ 2014 Editura “Academica Brâncuşi” , Târgu Jiu, ISSN 1844 – 640X

70

Fig. 37. Graphic form of electrical erosion parameters.

Fig. 38. Graphic form of electrical erosion parameters.

Fig.39. 3D Graphical form the pulse of time expressed as a percentage.

Fiabilitate si Durabilitate - Fiability & Durability No 2/ 2014 Editura “Academica Brâncuşi” , Târgu Jiu, ISSN 1844 – 640X

71

Fig. 40. 3D Graphical form the pulse of time expressed as a percentage.

Fig. 41. 3D Graphical form the pulse of time expressed as a percentage.

Fig. 42. The form 2D electrical erosion parameters.

Fiabilitate si Durabilitate - Fiability & Durability No 2/ 2014 Editura “Academica Brâncuşi” , Târgu Jiu, ISSN 1844 – 640X

72

Fig. 43. Graphical and erosion parameter values.

Fig. 44. Table containing the values parameters of electrical erosion.

Fig. 45. The form 3D graphics parameters electrical erosion.

Fiabilitate si Durabilitate - Fiability & Durability No 2/ 2014 Editura “Academica Brâncuşi” , Târgu Jiu, ISSN 1844 – 640X

73

Fig. 46. The form 3D graphics parameters electrical erosion.

Fig. 47. Table containing the values parameters of electrical erosion.

Fig. 48. The form 2D electrical erosion parameters.

Fiabilitate si Durabilitate - Fiability & Durability No 2/ 2014 Editura “Academica Brâncuşi” , Târgu Jiu, ISSN 1844 – 640X

74

Fig.49. The reporting of electric erosion productivity parameters.

Fig. 50. Table containing the values parameters of electrical erosion.

Fig. 51. The form 2D electrical erosion parameters.

Fiabilitate si Durabilitate - Fiability & Durability No 2/ 2014 Editura “Academica Brâncuşi” , Târgu Jiu, ISSN 1844 – 640X

75

Fig. 52. The reporting of electric erosion productivity parameters.

Fig. 53. Table containing the values parameters of electrical erosion.

Fig. 54. The form 3D graphics parameters electrical erosion.

Fiabilitate si Durabilitate - Fiability & Durability No 2/ 2014 Editura “Academica Brâncuşi” , Târgu Jiu, ISSN 1844 – 640X

76

Fig. 55. The form 3D graphics parameters electrical erosion.

Fig. 56. Table containing the values parameters of electrical erosion.

Fig. 57. The form 3D graphics parameters electrical erosion.

Fiabilitate si Durabilitate - Fiability & Durability No 2/ 2014 Editura “Academica Brâncuşi” , Târgu Jiu, ISSN 1844 – 640X

77

Fig. 58. The form 3D graphics parameters electrical erosion.

4.CONCLUSIONS.

Solid electrode EDM machines reproducing geometric shape metal piece tool called

electrode. Bearings are obtained mainly through electrical massive. Electrode shape is

identical to the piece that will get. The working area of the machine, each electrical discharge

creates a crater in the piece (material removed) and the electrode wear. There is never

mechanical contact between electrode and work piece. The electrode is made frequently

copper or graphite. Solid electrode EDM machines are capable of motion in 4 axes, the

electrode may adhere to the displacement axis X, Y, Z and W in the rotation, around its own

axis. The song remains fixed during processing, working in solidarity with the tank car.

5.REFERENCES.

[1] Ailincai, G.: Studiul metalelor ,Institutul Politehnic Iasi, 1978.

[2] Balc, N.: Tehnologii neconventionale, Editura Dacia Publishing House, Cluj-

Npoca, 2001.

[3] Bolundut, L.I.: Materiale si tehnologii neconventionale, Editura Tehnica-Info,

Chisinau, 2012.

[4] Buzdugan, Gh., ş.a. – Vibraţii mecanice, Editura Didactică şi Pedagogică,

Bucureşti, 1979.

[5] Constantinescu, V., ş.a. – Lagăre cu alunecare, Editura Tehnică, Bucureşti 1980.

[6] Colan, H.: Studiul metalelor, Editura Didactica si Pedagogica , Bucuresti, 1983.

[7] Domsa, A.: Materiale metalice in constructia de masini si instalatii, Editura

Dacia, 1981.

[8] Gafiţanu, M. ş.a. – Organe de maşini, vol. 2. Editura Tehnică, Bucureşti, 2002.

[9] Ghimisi,S. -An elastic-plastic adhesion model for fretting,15th.Symposium

“DanubiaAdria”, Bertinoro, Italia, 181-183.

[10] Nichici, A.: Prelucrarea prin eroziune electrica in constructia de masini, Editura

Facla, Timisoara, 1983.

[11] Olaru, D.N. – Tribologie. Elemente de bază asupra frecării, uzării şi ungerii,

Litografia Institutului Politehnic „Gheorghe Asachi”, Iaşi, 1995.

Fiabilitate si Durabilitate - Fiability & Durability No 2/ 2014 Editura “Academica Brâncuşi” , Târgu Jiu, ISSN 1844 – 640X

78

[12] Popa,M.S.:Masini, tehnologii neconventionale si de mecanica fina-Editie Bilingva,

Romana-Germana, Editura U.T.PRESS, Cluj-Napoca, 2003.

[13] Popa, M.S.: Tehnologii si masini neconventionale, pentru mecanica fina si

microtehnica, Editura U.T.PRESS, Cluj-Napoca, 2005.

[14] Popa, M.S.:Tehnologii inovative si procese de productie, Editura U.T.PRESS, Cluj-

Napoca,2009.

[15] Rădulescu, Gh., Ilea, M. – Fizico-chimia şi tehnologia uleiurilor lubrifiante, Editura

Tehnică, Bucureşti, 1982,

[16] Sofroni, L.: Fonta cu grafit nodular,Editura Tehnica, Bucuresti, 1978.

[17] Trusculescu, M.: Studiul metalelor, Editura Didactica si Pedagogica ,Bucuresti

,,1978