The effect of the molten weld pool on the non-uniform penetration of the parent metal at of surfacing
DOI:
https://doi.org/10.31498/2225-6733.37.2018.160243Keywords:
submerged arc surfacing, strip electrode, parent metal, penetration, non-uniformity, molten weld pool, axial bottom flowAbstract
The data of the molten weld pool influence on the increasing non-uniformity of the parent metal penetration during submerged arc surfacing using one or two strip electrodes have been presented. The experimental results of the investigation show that non-uniform penetration of the parent metal is influenced by the mass and heat flow in the weld pool. The axial bottom flow of the liquid metal during surfacing with one and two strip electrodes results in non-uniform penetration of the parent metal. In the process of submerged arc surfacing using two strip electrodes, the liquid weld metal flow and the penetration of the parent metal depend on the ratio of the current in the first and second strip electrodes. When the current in the first and second strip electrodes is the same the distribution of the temperature and flow rate across the width of the weld pool is not uniform. It leads to mass and heat flow just in the middle of the weld pool and non-uniform penetration of the parent metal with the bottom flow. The non-uniform penetration of the parent metal is influenced by the axial bottom flow. It is shown that raising the fraction of the current in the second strip electrode up to 0,6 from the total current increases the intensity of the circulation of the molten slag; its temperature becomes more equal which changes the flow rate across the width of the weld pool. The difference of the value of the maximum and average temperature, enthalpy and viscosity of the molten weld pool decreases, what influences on flow rate of the liquid metal. The experiments show that the non-uniformity of the parent metal penetration decreasesReferences
Список использованных источников (ГОСТ):
Лещинский Л.К. Слоистые наплавленные и упрочнённые композиции / Л.К. Лещинский, С.С. Самотугин. – Мариуполь : Новый мир, 2005. – 392 с.
Матвиенко В.Н. Нагрев и плавление основного металла при наплавке составным ленточным электродом / В.Н. Матвиенко, Л.К. Лещинский, В.А. Мазур // Сварочное производство. – 2014. – № 4. – С. 3-7.
Матвиенко В.Н. Оценка формы и размеров сварочной ванны при наплавке комбинированным ленточным электродом / В.Н. Матвиенко, В.А. Мазур, Л.К. Лещинский // Автоматическая сварка. – 2015. – № 9. – С. 30-33.
Матвієнко В.М. Математична модель оцінки нерівномірності проплавлення при наплавленні складеним стрічковим електродом / В.М. Матвієнко, В.О. Мазур, Л.К. Лещинській // Фундаментальні та прикладні проблеми сучасних технологій : зб. тез доповідей міжнар. наук.-техн. конф., м. Тернопіль, 19-20 травня 2015 р. – Тернопіль : ТНТУ, 2015. – С. 120-121.
Ерохин А.А. Основы сварки плавлением. Физико-химические закономерности / А.А. Ерохин. – М. : Машиностроение, 1973. – 448 с.
Лаврик В.П. Влияние теплофизических свойств расплава ленточного электрода на характер проплавления металла при широкослойной наплавке / В.П. Лаврик, Л.К. Лещинский, И.И. Пирч // Сварочное производство. – 1985. – № 3. – С. 34-35.
Матвиенко В.Н. Влияние состава электродной ленты на проплавление основного металла / В.Н. Матвиенко, Л.К. Лещинский, В.А. Мазур // Автоматическая сварка. – 2016. – № 8. – С. 12-14.
Oh Y.K. Low-Dilution Electroslag Cladding for Shipbuilding / Y.K. Oh, J.H. Davletian // Welding Journal. – 1990. – № 8. – P. 37-44.
О влиянии энтальпии и вязкости расплава сварочной ванны на формирование зоны проплавления / Л.К. Лещинский [и др.] // Вісник Приазовського державного технічного університету : Зб. наук. праць / ДВНЗ «ПДТУ». – Маріуполь, 2017. – Вип. 35. – С. 87-91. – (Серія : Технічні науки).
Лаврик В.П. Влияние соотношения токов в электродах на условия формообразования ванны при наплавке / В.П. Лаврик, Л.К. Лещинский, В.В. Тарасов // Сварочное производство. – 1986. – № 2. – С. 41-43.
Особенности формообразования и кристаллизации ванны при наплавке двумя лен-точными электродами / В.П. Лаврик, Л.К. Лещинский, В.Н. Бардюгов, В.И. Верник // Сварочное производство. – 1987. – № 2. – С. 39-41.
References:
Leshchinskiy L.K., Samotugin S.S. Sloistye naplavlennye i uprochnennye kompozitsii [Multilayer compositions: surfacing and hardening]. Мariupol, Noviy mir Publ., 2005. 392 p. (Rus.)
Matvienko V.N., Leschinsky L.K., Mazur V.A. Nagrev i plavlenie osnovnogo metalla pri naplavke sostavnym lentochnym elektrodom [Parent material heating and melting at com-pound strip-electrode flux surfacing]. Svarochnoe proizvodstvo – Welding production, 2014, no. 4, pp. 3-7. (Rus.)
Matvienko V.N., Mazur V.A., Leshchinskiy L.K. Otsenka formy i razmerov svarochnoy vanny pri naplavke kombinirovannym lentochnym elektrodom [Evaluation of shape and sizes of weld pool in surfacing using combined strip electrode]. Avtomaticheskaia svarka – Automatic welding, 2015, no. 9, pp. 30-33. (Rus.)
Matvienko V.N., Mazur V.A., Leshchinskiy L.K. Matematychna model’ ocinky nerivnomirnosti proplavlennja pry naplavlenni skladenym strichkovym elektrodom. Dopovidi Mezhn. nauk.-tekhn. konf. «Fundamental’ni ta prykladni problemy suchasnyh tehnologij» [Mathematical model of computation of nonuniformity of penetration in submerged-arc surfacing with composite strip electrode. Abstracts of the Int. sci.-tech. conf. «Fundamental and applied problems of modern technologies»]. Ternopil, 2015, pp. 120-121. (Ukr.)
Erokhin А.А. Osnovy svarki plavleniem. Fiziko-khimicheskie zakonomernosti [Basics of fusion welding. Physico-chemical regularities]. Мoscow, Mashinostroenie Publ., 1973. 448 p. (Rus.)
Lavrik V.P., Leshchinskiy L.K., Pirch I.I. Vliyanie teplofizicheskikh svoystv rasplava len-tochnogo elektroda na kharakter proplavleniya metalla pri shirokosloynoy naplavke [Influence of thermophysical properties of melt strip electrode on the nature of the penetration of metal was explained in coarse-grained surfacing]. Svarochnoe proizvodstvo – Welding production, 1985, no. 3, pp. 34-35. (Rus.)
Matvienko V.N., Leshchinskiy L.K., Mazur V.A. Vliyanie sostava elektrodnoy lenty na proplavlenie osnovnogo metalla [Influence of electrode strip composition on base metal penetration]. Avtomaticheskaia svarka – Automatic welding, 2016, no. 8, pp. 12-14. (Rus.)
Oh Y.K., Davletian J.H. Low-Dilution Electroslag Cladding for Shipbuilding. Welding Journal, 1990, no. 8, pp. 37-44.
Leshchinskiy L.K., Matvienko V.М., Yurchenko I.V., Sukhov N.S., Sopov A.S., Rusnak A.S., Medved P.V. O vliyanii entalpii i vyazkosti rasplava svarochnoy vanny na formirovanie zony proplavleniya [The molten weld pool enthalpy and viscosity influence on the formation of the fusion zone]. Vіsnik Priazovs’kogo derzhavnogo tehnіchnogo unіversitetu. Serіia: Tekhnіchnі nauki – Reporter of the Priazovskyi State Technical University. Section: Technical Sciences, 2017, iss. 35, pp. 87-91. (Rus.)
Lavrik V.P., Leshchinskiy L.K., Tarasov V.V. Vliyanie sootnosheniya tokov v elektrodakh na usloviya formoobrazovaniya vanny pri naplavke [Influence of ratio of currents in the electrodes on the conditions shaping baths at surfacing]. Svarochnoe proizvodstvo – Welding production, 1986, no. 2, pp. 41-43. (Rus.)
Lavrik V.P., Leshchinskiy L.K., Bardyugov V.N., Vernik V.I. Osobennosni formoobra-zovaniya i kristallizatsii vanny pri naplavke dvumya lentochnymi elektrodami [Peculiarities of formation and crystallization of the baths at surfacing two strip electrodes]. Svarochnoe proizvodstvo – Welding production, 1987, no. 2, pp. 39-41. (Rus.)
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