ผลของส่วนผสมของตัวประสานต่อกระบวนการฉีดขึ้นรูปโลหะผง

• المؤلف الرئيسي: อารดา บัญชาวิมลเชษฐ
• مؤلفون آخرون: ไสว ด่านชัยวิจิตร
• التنسيق: Theses and Dissertations
• اللغة: Thai
• منشور في: จุฬาลงกรณ์มหาวิทยาลัย 2001
• الموضوعات: การฉีดขึ้นรูปโลหะ; โลหะผง; โลหะผงวิทยา
• الوصول للمادة أونلاين: https://digiverse.chula.ac.th/Info/item/dc:46687
• المؤسسة: Chulalongkorn University

To study effects of binder composition on each process in metal injection molding of 316L stainless steel and to study solvent debinding process by using petroleum ether as solvent. An appropriate condition for each process in metal injection molding when used different binder was studied. The most appropriate binder composition for metal injection molding of 316L stainless steel was selected. Binder composition includes low-density polyethylene (LD1630J and LD1450J), paraffin wax, stearic acid and palm oil. As a result, the binder that was made from 45 wt.% LD1450J, 55 wt.% paraffin wax and added 5 wt% stearic acid (B4505) was the most appropriate binder for metal injection molding of 316L stainless steel. It gave a good powder distribution in mixture and could be eradicated easily and rapidly. Solvent debinding for B4505 could be done. Firstly, the specimens were soaked in ether at 30 ํC for 1 hour. They were dried at 50 ํC for 45 minutes. Then, they were soaked in ether again at 40 ํC for 4 hours. Finally, wax-covered pores at specimen s surface were opened by soaking the specimens in pure ether at 40 ํC for 2 minutes. After sintering in hydrogen atmosphere at 1350 ํC for 4 hours, sintered specimens that used B4505 as binder had high sintered density (96% of theoretical density) and good mechanical properties