جوشکاری به روش A-TIG بر روی فولاد ابزار D2 با فلاکس های اکسیدی SiO2 و ZnO

نوع مقاله: مقاله پژوهشی

نویسندگان

1 مهندس

2 عضو هیات علمی

چکیده

در این پژوهش، جوشکاری فولاد ابزار سردکار آلیاژی D2 مورد بررسی قرار گرفته است. سعی گردیده است به کمک روش A-TIG راه حل مناسبی برای افزایش عمق نفوذ و نسبت عمق به عرض جوش در مقایسه با روش TIG جست و جو شود . متغیرهای این پژوهش نوع فلاکس فعال اکسیدی و شدت جریان در نظر گرفته شده اند که تاثیر هر یک بر عمق نفوذ و عرض جوش و ظاهر آن مورد بررسی قرار گرفته است. فلاکس های مورد استفاده در این پژوهش ZnO و SiO2 بودند و جوشکاری در پنج شدت جریان 85 ، 100 ، 115 ، 130 و 145 آمپر انجام شد.
نتایج حاصل نشان دادند که در فلاکس ZnO انحراف قوس و پاشش به دلیل مقاومت الکتریکی فلاکس ظاهر نامناسبی را در جوش بوجود آورده است. جوش های حاصل از فلاکس SiO2 دارای ظاهری مطلوب بوده و افزایش عمق نفوذ و کاهش عرض جوش را در بر داشته است. فلاکس SiO2 در این پژوهش بهترین عملکرد را با افزایش عمق نفوذ تا 4/5 میلی متر در شدت جریان 145 آمپر از خود به جای گذاشته است.

کلیدواژه‌ها


عنوان مقاله [English]

Study on A-TIG Welding of D2 Tool Steel Alloy with SiO2 and ZnO Fluxes

نویسندگان [English]

  • Soleiman Mohammad Bidhandi 1
  • Ayyub Halvaee 2
1 Engineer
2 Member of Academic Staff
چکیده [English]

In this research, Welding of D2 Cold Work Tool Alloy steel have been evaluated. A-TIG technique has been utilized to fine an appropriate solution in order to increase the depth of penetration and welding width compared to TIG. Active oxide flux and current intensity have considered as a main variables and their effects on penetration depth, welds width and welding surface appearance were investigated. The fluxes used in this study were ZrO2 and SiO2 and welding process was carried out at 85, 100, 115, 130 and 145A current intensities.
The results showed that arc deviation and spattering due to electrical resistance of ZrO2 flux creates improper appearance on weld surface. Welding by SiO2 flux make welds with good surface appearance and increase the depth of penetration and also decrease weld width. SiO2 flux shows the best performance by increasing of penetration depth up to 5.4 mm at 145A current intensity.

کلیدواژه‌ها [English]

  • Keywords: Steel D2
  • Oxide Active Flux
  • A-TIG
  • Welding Depth Penetration

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