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Register a new userInfluence of micro-plasma welding process parameters on characteristics of welded thin metal sheets
تأثير متحولات عملية لحام مايكروبلازما في خصائص الوصلة اللحامية لصفائح معدنية رقيقة
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Publication date
2018
and research's language is
العربية
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يسعى هذا البحث إلى توطين تقانة لحام البلازما (PAW) البديل الأفضل لتقانة اللحام بقوس التنغستين في تيغ (TIG) غاز خامل لذلك أجريت مقارنة كمية بين هاتين التقانتين وفق الحالة الخاصة التي تم تناولها و هي حالة استخدام التيار , المستمر, شملت المقارنة كلا من الدخل الحراري و المردود الحراري و مقاومة الشد العظمى و الاستطالة النسبية عند التحطم و القساوة الميكروية و التشوه الزاوي.
This research seeks to localize the technology of plasma arc welding (PAW), the best alternative against tungsten arc welding (TIG). So a quantitative comparison between these two technologies has been made, according to the particular case that is DC current. involving heat efficiency, heat input, tensile strength, relative elongation at fracture, micro hardness and angular distortion.
References used
Tseng, K. H., Jou, M., Chang, Y., & Huang, H. Y. (2008). Influence of process parameters on joining strength in microplasma arc welding. International Journal of Manufacturing Technology and Management, 13(2-4), 265-279
20 Xu, P. Q., Yao, S., He, J. P., Ma, C. W., & Ren, J. W. (2009). Numerical analysis for effect of process parameters of low-current micro-PAW on constricted arc. The International Journal of Advanced Manufacturing Technology, 44(3), 255-264
Piccini, J., & Svoboda, H. (2012). Effect of the plasma arc welding procedure on mechanical properties of DP700 steel. Procedia Materials Science, 1, 50-57
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Design of experiments (DOE)
had been used in the study, and the results had been evaluated by the
surface response method. The results showed that the welding
current is the main parameter by its effect on the mechanical studied
properties and the parameters values which give the best responses
had been determined.
In this research, a study of the influence of arc welding
parameters on the thermal cycle was conducted, where the thermal
cycle within the welded plate of stainless steel 304L by plasma arc
welding (PAW) with weld-on-plate was measured using
the
rmocouples for several welding parameters (intensity of the
welding current, welding velocity, flow rate of plasma gas) and
comparing the influence of this parameters on the thermal cycle
within the plate.
The objective of the study was to determine experimentally
the dust pollution of polyethylene pipe during head- to - head
welding in the workshops piping and its impact on the efficiency of
welding.
Refusion the boundaries of weld's reinforcement was done using TIG
without filler metal .The mechanical properties & micro-structure of
various zones in low carbon steel welded joints were studied.
This study includes an experimental work to determine the effect of dilution on
Hardfacing welding of clinker hammer crusher. In this work, samples have been prepared
from the same metal type of hammer’s, of which is X120Mn12. Then the samples had
been hardfaced using deferent kind of hardfacing Shielded Metal Arc Welding electrodes,
and using deferent welding parameters (current, polarity), the calculation and measuring of
dilution had done and then performed the hardness tests, wear tests, and their relation with
dilution.
This study showed that the reduction of heat input decreases dilution as the hardness
of hardfaced samples increases and wear decreases.
Direct current electrode positive (DCEP) increase dilution as the hardness of
hardfaced samples decreases and wear increases, but the quality of the welding became
better. Results showed that percentage of chromium and carbon in electrodes have positive
effect on hardness.
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