Investigation of characteristic of powder wire with the CuO / Al exothermic mixture https://doi.org/10.33108/visnyk_tntu2018.04.013
Article Sidebar
Main Article Content
Abstract
The paper the results of research is presented and the level of influence of the parameters of surfacing and the amount of exothermic mixture in the composition of self-shielding flux-cored wire on the deposition rate factor and spattering factor are analyzed. The analysis of the experiment was performed using the Taguchi method, in addition, to determine the influence of individual factors on the studied parameters (ad, ψS), analysis of variance (ANOVA) is fulfilled. It was found that for the deposition rate factor, according to the degree of influence the factors are distributed in the following order − WFS, B, CTWD, Ua, and for the spattering factor − Ua, B, CTWD, WFS. According the analysis of variance (ANOVA) of the experiment results are determined that the greatest impact on the deposition rate factor (ad) has the wire feed speed (WFS − 53.98%), the amount of exothermic mixture in the core of flux-cored wire (B − 27.3%) and contact tip to work distance (CTWD − 22.75%) have less influence, and the influence of the arc voltage (Ua) can be neglected since its contribution is only 5.82%. The arc voltage (Ua) has a high influence on the spattering factor (ψS), whose contribution is more than half (60.19%), the amount of exothermic mixture in the charge of flux-cored wire (B) has less influence, whose influence is (22.38%), while contact tip to work distance (CTWD) and wire feed speed (WFS) have minor influence and are respectively 11.55% and 5.88%. Technologically acceptable modes of surfacing are determined (contact tip to work distance CTWD = 35 mm; flux-cored wire feed speed WFS = 124 m / h; arc voltage Ua = 28V) and amount of exothermic mixture in the core of flux-cored wire, which significantly influences on the indexes of deposition rate factor and spattering factor. Models of the 2nd order of dependence on the two most significant factors for the indexes an and ψp are constructed.
Article Details
Issue
Section
This work is licensed under a Creative Commons Attribution 4.0 International License.
References
1. Cary, H.B., Helzer, S.C. Modern Welding Technology, Prentice Hall, New York. 2005. P. 715.
2. Juzvenko Ju.A. Naplavka poroshkovoj provolokoj / Ju.A. Juzvenko, G.A. Kiriljuk. M.: Mashinostroeni, 1973. 45 p.
3. Pohodnja I.K. Svarka poroshkovoj provolokoj / I.K. Pohodnja, A.M. Suptel', V.N. Shlepakov. K.: Naukova dumka, 1972. 224 p.
4. Pohodnja I.K. Issledovanija i razrabotki IJeS im. E.O. Patona v oblasti jelektrodugovoj svarki i naplavki poroshkovoj provolokoj / I.K. Pohodnja, V.N. Shlepakov, S.Ju. Maksimov, I.A. Rjabcev // Avtomaticheskaja svarka. 2010. No 12. P. 34 − 42.
5. Zharikov S.V. Optimizacija rezhimov naplavki samozashhitnoj poroshkovoj provolokoj s jekzotermicheskoj smes'ju / S.V. Zharikov, A.G. Grin', L.V. Vasil'eva // Visnik Donbas'ko derzhavnoi mashinobudivnoi akademii.-Kramators'k: DDMA. 2016. No 2 (38). P. 116 − 120.
6. Zarechenskij A.V. Osobennosti plavlenija poroshkovyh lent s termitnymi smesjami / A.V. Zarechenskij, L.K. Leshhinskij, V.V. Chigarev // Svarochnoe proizvodstvo. 985. No 8. P. 39 – 41.
7. Ioffe O.M. Vlijanie titano-termitnoj smesi, vhodjashhej v jelektrodnoe pokrytie, na povyshenie proizvoditel'nosti svarki / I.S. Ioffe, O.M. Kuznecov, V.M. Piteckij // Svarochnoe proizvodstvo. 1980. No 3. P. 26 – 28.
8. Karpenko V.M. Jeffektivnost' teplovydelenija jekzotermicheskoj smesi pri naplavke poroshkovoj provolokoj / V.M. Karpenko, S.V. Zharikov // Udoskonalennja procesiv ta obladnannja tiskom v metalurgii i mashinobuduvanni. Tematichnij zbirnik naukovih prac'. Kramators'k − Slov'jans'k. 2000. P. 480 − 483.
9. Rybin V.A. Issledovanie vlijanija konstruktivnyh osobennostej i himicheskogo sostava napolnitelja, poroshkovyh provolok na rezhimy jelektrodugovoj svarki / V.A. Rybin, V.A. Ivanov // Jekspozicija Neft' Gaz. 2013. No 7 (32). P. 55 − 59.
10. Correa C.A., Mastelari N., Moreno, J.R.S. Effect of welding parameters in flux core arc welding (FCAW) with conventional and pulsed current in the efficiency and fusion rate of melting coating. Scientific Research and Essays, 2014, Vol. 9 (23). Pp. 976 − 983. https://doi.org/10.5897/SRE2014.6064
11. Aman Aggarwal and Hari Singh , 'Optimization of machining techniques – A retrospectiveand literature review', Sadhana, 2005. Vol. 30,. Part 6. Pp. 699 − 711. https://doi.org/10.1007/BF02716704
12. Metodika robastnogo proektirovanija tipovyh proizvodstvennyh processov / Support 17. Rezhim dostupa: http://www.support17.com/component/content/286.html?task=view.
13. Astashkevich B.M. Iznosostojkost' i mehanicheskie svojstva cilindrovogo chuguna, legirovannogo med'ju i borom / B.M, Astashkevich, A.G. Buljuk // Litejnoe proizvodstvo. 1992. No 1. P. 14 − 15.
14. Zelikman I.D. Mezhkristallitnaja korrozija lityh, hromonikelevyh kislotoupornyh stalej, soderzhashhih med' / Trudy instituta VNIIPTUUglemash. Vyp.II / Iznosostojkie materialy dlja detalej gornyh mashin i tehnologicheskie metody povyshenija sroka ih sluzhby. M.: Nedra, 1966. P. 141 − 146.