مهندسی ساخت و تولید ایران

مهندسی ساخت و تولید ایران

انتخاب چسب بهینه برای اتصال‌ جوش - چسب ورق‌های فولاد کم‌کربن St14 با استفاده از آزمون کشش برشی

نوع مقاله : مقاله پژوهشی

نویسندگان
1 دانشکده مهندسی مکانیک، دانشگاه صنعتی شاهرود، شاهرود، ایران
2 دانشکده مهندسی شیمی و مواد، دانشگاه صنعتی شاهرود، شاهرود، ایران
چکیده
در این پژوهش، روش‌های انتخاب چسب برای اتصال‌های جوش ـ چسب ورق‌های فولاد کم‌کربن St14 با استفاده از آزمون کشش برشی بررسی شد. نمونه‌های اتصال با استفاده از جوشکاری نقطه‌ای مقاومتی و اعمال انواع چسب‌های خام (اپوکسی، پلی اورتان و سیلیکون) و ترکیب آن‌ها ساخته شدند. تأثیر عوامل مختلف شامل نوع چسب، ترکیب با حلال، زمان و دمای پخت و همچنین شرایط سطح اولیه بر استحکام اتصال مورد بررسی قرار گرفت. نتایج نشان داد که چسب‌های ترکیبی حاوی تینر روغنی نسبت به سایر نمونه‌ها عملکرد بهتری داشتند. به ویژه، ترکیب 40% وزنی چسب پلی اورتان، 40% وزنی چسب سیلیکونی و 20% وزنی تینر روغنی که در دمای 160 درجه سانتی‌گراد به مدت 60 دقیقه پخته شده بود، بهترین استحکام را ارائه کرد. همچنین مشخص شد که نظافت سطح اولیه تأثیر معناداری بر استحکام اتصال ندارد. در نهایت، بهینه‌سازی شرایط اتصال با استفاده از روش‌های طراحی آزمایش تاگوچی و فاکتوریل انجام شد و نمونه‌ای با استحکام بهینه برای کاربردهای صنعتی معرفی گردید.
کلیدواژه‌ها

عنوان مقاله English

Selection of optimum adhesive for weld-bond joining of St14 low carbon steel sheets using tensile shear test

نویسندگان English

Sohrab Ahmadzadeh 1
Mostafa Hajian Heidary 2
Seyed Vahid Hosseini 1
1 Faculty of Mechanical Engineering, Shahrood University of Technology, Shahrood, Iran
2 Faculty of Chemical and Materials Engineering, Shahrood University of Technology, Shahrood, Iran
چکیده English

This study evaluated adhesive selection methods for weld-bonded joints of low-carbon St14 steel sheets using tensile shear tests. The joints were fabricated through resistance spot welding, combined with the application of various raw adhesives, including epoxy, polyurethane, and silicone, as well as their specific combinations. The effects of adhesive type, solvent combinations, curing time and temperature, and initial surface conditions on joint strength were thoroughly analyzed. Results showed that adhesive combinations containing oil-based thinner consistently performed better than others. Specifically, a mixture of 40 wt% polyurethane adhesive, 40 wt% silicone adhesive, and 20 wt% oil-based thinner, cured at 160°C for 60 minutes, demonstrated the highest strength among all samples tested. Additionally, it was observed that initial surface cleaning had no significant impact on the final joint strength. Optimization of joint conditions was performed using the Taguchi and factorial experimental design methods, producing a high-strength adhesive formulation well-suited for various industrial applications.

کلیدواژه‌ها English

Weld-Bonded Joint
Low-Carbon St14 Steel
Tensile Shear Test
Electrical Conductivity
Curing Condition Optimization
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