مهندسی ساخت و تولید ایران

مهندسی ساخت و تولید ایران

بررسی قالب‌گیری تزریقی فولاد کم آلیاژ 4605: بهینه‌سازی پارامتریک مرحله تزریق با استفاده از رویه پاسخ سطح (RSM)

نوع مقاله : مقاله پژوهشی

نویسندگان
1 فارغ‌التحصیل کارشناسی ارشد، گروه مهندسی مواد، واحد علوم و تحقیقات، دانشگاه آزاد اسلامی، تهران، ایران
2 عضو هیئت‌علمی، گروه مهندسی مکانیک، واحد کرج، دانشگاه آزاد اسلامی، کرج، ایران
چکیده
در مطالعه حاضر، بررسی پارامترهای مؤثر روی مرحله تزریق فرایند قالب‌گیری تزریقی پودر فلز (MIM) به منظور ساخت یک قطعه صنعتی مورد کاربرد در موتور از جنس فولاد کم آلیاژ 4605AISI- انجام شده است. به منظور کاهش آزمایشات تجربی مورد نیاز و همچنین بهینه ­سازی پارامترهای مختلف تزریق، از روش آماری سطح پاسخ (RSM) و طرح پنج متغیری Box-Behnken Design (BBD) با فرض یک مدل درجه دوم استفاده شده است. با استفاده از این نرم افزار تعداد 46 آزمایش طراحی گردید. سپس نمونه ­های ساخته شده و چگالی آن­ها اندازه­ گیری شده است. پس از آن، اهمیت پارامترهای تزریق و همچنین اثر متقابل پارامترها روی یک­دیگر، با استفاده از تحلیل واریانس (ANOVA) مورد بررسی قرار گرفته شده است. در نهایت، نتایج این تحقیق نشان داده است که دمای تزریق 155 درجه سانتی‌گراد، سرعت تزریق 80 میلی‌متر بر ثانیه، فشار نگهداری 83 بار، زمان نگهداری 9 ثانیه و فشار تزریق 132 بار منتج به بیشترین چگالی در قطعه تزریق شده که معادل 4.892 گرم بر سانتی­ متر مکعب بوده است، شده است. نهایتا، پس از تولید یک نمونه جدید با استفاده از پارامترهای بهینه قطعه ­ای با چگالی 4.9 گرم بر سانتی ­متر مکعب به ­دست آمد که مشاهده شد نتایج بسیار نزدیک به مقدار پیش‌بینی ‌شده بوده است که نشان­ دهنده صحت مدل تقریب زده شده می ­باشد.
کلیدواژه‌ها

عنوان مقاله English

Investigating metal injection molding of AISI-4605 low alloy steel feedstock: parametric optimization of the injection stage using RSM technique

نویسندگان English

Sina Rezaei 1
Ali Askari 2
1 MSc Graduate, Department of Materials Engineering, Science and research branch, Islamic Azad University, Tehran, Iran
2 Faculty Member, Department of Mechanical Engineering, Karaj Branch, Islamic Azad University, Karaj, Iran
چکیده English

In the present study, the effective parameters of injection stage of the metal injection molding process (MIM) is investigated in order to make a sound industrial part from the AISI-4605 low-alloy steel. In order to design of experiments and also to optimize different parameters of injection, statistical method of response surface method (RSM) and five-variable Box-Behnken Design (BBD) have been used assuming a quadratic model. Using this software, 46 experiments were designed. Then the samples are made and their density is measured. After that, the importance of the injection parameters as well as the interaction between each parameter have been investigated using analysis of variance (ANOVA). Finally, this research has shown that the injection temperature of 155°C, the injection speed of 80 mm/s, the holding pressure of 83 bar, the holding time of 9 seconds and the injection pressure of 132 bar led to the maximum density of the green body, which is equivalent to 4.892 g/cm2. Finally, after producing a new sample using the optimal parameters a piece with a density of 4.9 g/cm2 was obtained, and it was observed that the results were very close to the predicted value, which presented the model has good accuracy in prediction.

کلیدواژه‌ها English

Metal Injection Molding
Low Alloy Steel 4605
Feedstock
Density
Response Surface Method (RSM)
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