مهندسی مکانیک مدرس

مهندسی مکانیک مدرس

بررسی تجربی تاثیر پارامترهای فرآیند شکل‌دهی تدریجی گرم بر روی شکل‌پذیری ورق های ترکیبی آلومینیم 6061 و 5083

نوع مقاله : پژوهشی اصیل

نویسندگان
دانشگاه صنعتی قم
چکیده
شکل‌دهی تدریجی تک نقطه ای، فرآیندی مقرون به صرفه با انعطاف‌پذیری بالا می‌باشد و در نتیجه انتخابی مناسب جهت تولید حجم پایین در مقایسه با روش‌های سنتی شکل‌دهی است. در تحقیق تجربی حاضر، شکل‌دهی تدریجی تک نقطه‌ای گرم با ابزار سرگرد بر روی ورق‌های ترکیبی آلومینیم که توسط فرایند جوش آرگون به یکدیگر متصل شده‌اند مورد بررسی قرار می‌گیرد. ورق‌های مورد استفاده از جنس الومینیوم گریدهای 6061 و 5083 با ضخامت یکسان 5/1 میلیمتر می‌باشند که این ورق‌ها به صورت لب به لب به یکدیگر متصل شده‌اند. در این تحقیق تاثیر چهار پارامتر دما، روانکار، مقدار نشست ابزار و سرعت تغذیه میز به عنوان متغیرهای فرآیند شکل‌دهی تدریجی بر روی میزان شکل‌پذیری و وضعیت ظاهری نمونه‌های ورق ترکیبی آلومینیم مورد بررسی قرار گرفته است. محدوده دمایی مورد بررسی بین دمای محیط تا 290 درجه سانتی‌گراد می‌باشد و سه نوع روانکار نیز برای انجام آزمایش‌ها مورد استفاده قرار گرفته است. برای طراحی آزمایش نیز از روش تاگوچی استفاده شد و نتایج حاصل از آزمایش‌ها نشان داد افزایش دما بعنوان تاثیرگذارترین پارامتر سبب افزایش میزان شکل‌دهی ورق به میزان 79 درصد شده است همچنین روانکار و نشست ابزار و سرعت تغذیه میز در رده‌های بعدی در شکل‌پذیری ورق ترکیبی آلومینیم موثر می‌باشند.
کلیدواژه‌ها

موضوعات


عنوان مقاله English

Experimental Investigation of effect of warm single point incremental forming parameters on the formability of 6061 and 5083 aluminum tailor welded blanks

نویسندگان English

amirhosein Abasi
Rasoul Safdarian
Qom University of Technology
چکیده English

Single point incremental forming (SPIF) is a cost-effective process with high flexibility and as a result, it is a suitable choice for low-batch production compared to traditional metal forming methods. In the present experimental research, the warm SPIF with ball nose tool was used in the forming of aluminum tailor welded blanks (TWB) that were joined together by the argon welding process. Aluminum sheets of 6061 and 5083 with an equal thickness of 1.5 mm were used as base metals and joined together using the butt welding method. In this research, the effect of four parameters of temperature, lubricant, step down, and feedrate were investigated on the formability and appearance of aluminum. The temperature range is between room temperature and 290 degrees Celsius, and three types of lubricants are used in the experimental tests. The Taguchi method was used for the design of the experiment. The results of the tests indicated that an increase in the temperature as the most effective parameter led to an increase in the formability of TWB by 79%. The lubrication, step down, and the feedrate was in the next ranks of effectiveness in the formability of aluminum TWB.

کلیدواژه‌ها English

Single Point Incremental Forming (SPIF)
Aluminum TWB
Lubricant
Elevated temperatures
forming depth
TIG welding method
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