فهرست:
فهرست......................................................................................................................................................................................شش
فهرست اشکال..............................................................................................................................................................................نه
فهرست جداول........................................................................................................................................................................یازده
چکیده.....................................................................................................................................................................................دوازده
فصل اول: مقدمه
1-1 مقدمه.....................................................................................................................................................................................1
1-2 معرفی قطعه مورد بررسی..................................................................................................................................................2
1-3 مروری بر کارهای انجام شده............................................................................................................................................3
1-4 ویژگیهای پایاننامه و اهداف آن....................................................................................................................................8
1-5 روند انجام پایاننامه............................................................................................................................................................9
1-6 مروری بر فصلهای پایاننامه............................................................................................................................................9
فصل دوم: مفاهیم اولیه
2-1 مقدمه..................................................................................................................................................................................11
2-2 معرفی مس و کاربردهای آن..........................................................................................................................................11
2-2-1 مشخصات عمومی مس..............................................................................................................................................12
2-2-2 سیستم نامگذاری مس و آلیاژهای آن....................................................................................................................14
2-2-3 مس کار شده................................................................................................................................................................15
2-3 نگاهی به فرآیند شکلدهی فلزات.................................................................................................................................15
2-4 شکلدهی بر اساس بیان آلتن.......................................................................................................................................15
2-4-1 شکل دهی حجمی......................................................................................................................................................16
2-4-2 شکلدهی ورقهای........................................................................................................................................................16
شش
2-5 رفتار پلاستیک..................................................................................................................................................................16
2-6 تنش سیلان.......................................................................................................................................................................17
2-7 تنش سیلان متوسط........................................................................................................................................................17
2-8 دما در شکلدهی فلزات..................................................................................................................................................18
2-8-1 شکلدهی سرد............................................................................................................................................................18
2-8-2 شکلدهی گرم.............................................................................................................................................................18
2-8-3 شکلدهی داغ..............................................................................................................................................................19
2-9 نورد......................................................................................................................................................................................19
2-9-1 دستگاههای نورد..........................................................................................................................................................20
2-10 نورد میله و مقاطع.........................................................................................................................................................23
2-10-1 ابعاد و ضرایب هندسی کاهش ضخامت در نورد مقاطع...................................................................................24
2-10-2 شناساندن شکل کالیبر............................................................................................................................................25
2-10-2-1 کالیبر آغازین یا پیش نورد................................................................................................................................25
2-10-2-2 کالیبر میانی و پایانی..........................................................................................................................................27
2-10-3 اصول طراحی نورد....................................................................................................................................................28
2-10-4 پیدایش باله در نورد.................................................................................................................................................29
2-10-5 معرفی کارکرد کالیبر...............................................................................................................................................30
فصل سوم: شبیه سازی اجزای محدود فرآیند شکلدهی غلتکی لوله
3-1 مقدمه..................................................................................................................................................................................32
3-2 مدل اجزای محدود..........................................................................................................................................................33
3-3 ایجاد مدل هندسی لوله..................................................................................................................................................34
3-4 مدل هندسی غلتکها.....................................................................................................................................................35
3-5 تعریف خواص مواد...........................................................................................................................................................36
3-6 مونتاژ کردن قطعات.........................................................................................................................................................38
3-7 تعریف اثر متقابل تماس و خصوصیات تماس.............................................................................................................39
3-8 گام های تحلیل.................................................................................................................................................................40
هفت
3-9 بارگذاری ها.......................................................................................................................................................................40
3-10 شبکه بندی.....................................................................................................................................................................42
3-11 پردازش مدل اجزا محدود...........................................................................................................................................43
فصل چهارم: آزمایش تجربی فرآیند شکل دهی غلتکی لوله
4-1 مقدمه..................................................................................................................................................................................44
4-2 تجهیزات مورد استفاده برای آزمایش...........................................................................................................................44
4-3 مشخصات لوله...................................................................................................................................................................45
4-4 مشخصات غلتک ها..........................................................................................................................................................46
4-5 مراحل انجام تست............................................................................................................................................................47
4-6 بیرون آوردن بیسموت-قلع از قطعه ساخته شده......................................................................................................50
فصل پنجم: نتایج و بحث
5-1 مقدمه..................................................................................................................................................................................51
5-2 بررسی مقطع قطعه در هر مرحله................................................................................................................................52
5-3 بررسی ابعادی....................................................................................................................................................................54
5-4 بررسی توزیع ضخامت قطعه............................................................................................................................................56
5-5 بررسی اثر اصطکاک.........................................................................................................................................................57
فصل ششم: نتیجه گیری و پیشنهادها
6-1 نتیجه گیری.......................................................................................................................................................................58
6-2 پیشنهادها...........................................................................................................................................................................59
مراجع...........................................................................................................................................................................................60چکیده لاتین...............................................................................................................................................................................62
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