- 學位論文
熱均壓對金屬射出成品的機械性質影響之研究
Study of Mechanical Properties for HIP Procedure on Metal Injection Molding
摘要
熱均壓(Hot Isostatic Pressing, HIP)技術已普遍運用在鑄造工業，因可有效改善鑄造材料的強度、延展性與疲勞壽命，加強改善鑄造過程中所產生之內部孔隙，由於它製程上結合了高溫及高壓方式，使鑄造件透過二次加工後獲得較佳的機械特性。實驗材料所使用的不鏽鋼316L，在電子3C產品金屬零件中，使用最多的金屬射出的材料，可提供電子3C產品需在輕薄空間中，同時要具有整台機器強度需求，因優越的抗腐蝕性、強度、潛變及疲勞等特性，讓產品在高溫及低溫環境都可以具有良好機械性質。 本研究主要探討熱均壓製程對不鏽鋼316L MIM金屬射出之機械特性影響，MIM不鏽鋼316L工件導入熱均壓製程實驗中，使用兩種不同之熱均壓溫度包括1100°C、1250 °C；以固定熱均壓壓力為175 MPa；進行固定保溫保壓時間為1小時，所形成兩種條件樣品，再與未進行熱均壓工件進行機械特性比對。以常溫拉伸試驗、密度、外型尺寸、硬度之變化等分析，來評估熱均壓製程對不鏽鋼316L之影響。
並列摘要
Hot Isostatic Pressing (Hot Isostatic Pressing, HIP) technology has been widely used in the foundry industry, because they can improve the strength of the cast material, ductility and fatigue life, strengthen internal porosity improve the casting process arising due to its manufacturing process combines high temperature and high pressure mode, the cast member after passing through secondary processing to obtain better mechanical properties. 316L stainless steel material used in the experiment, 3C products in electronic metal parts, the use of most metals emitted material, providing electronic 3C products need to light the space, while the strength of having the entire machine demand as superior corrosion resistance , strength, creep and fatigue characteristics, so that products in the high-temperature and low-temperature environment can have good mechanical properties. This study focuses on the hot pressing process are affecting the mechanical properties of stainless steel 316L MIM metal injection, MIM 316L stainless steel workpieces are introduced into the hot pressing process experiments using two different thermal equalizing temperatures include 1100 ° C, 1250 ° C; to Fixed heat equalizing pressure 175 MPa; fixed pressure and temperature for 1 hour sample formed two conditions, then with non-thermal equalizing workpiece mechanical properties than the right. Analysis to room temperature tensile tests, density, dimensions of change, etc., to assess the impact of hot pressing process are of stainless steel 316L.