Effect of hot isostatic pressing method to enhance quality of tin powder

2020 ◽  
Author(s):  
Abdul Basyir ◽  
Agus Sukarto Wismogroho ◽  
Didik Aryanto ◽  
Wahyu Bambang Widayatno
Keyword(s):  
Hot Isostatic Pressing ◽  
Pressing Method ◽  
Isostatic Pressing

scholarly journals Ceramics Coating on Metal Surfaces by Hot Isostatic Pressing Method

1988 ◽  
Vol 96 (1115) ◽  
pp. 736-743 ◽  
Author(s):  
Kiichiro KAMATA ◽  
Hiroshi FUKUNAGA ◽  
Noriyuki HAYASHI ◽  
Isao TANABE ◽  
Kozo ISHIZAKI
Keyword(s):  
Metal Surfaces ◽  
Hot Isostatic Pressing ◽  
Pressing Method ◽  
Isostatic Pressing

High-Temperature Buckling Analysis of Titanium Cans Under External Pressure

1999 ◽  
Vol 121 (4) ◽  
pp. 364-368
Author(s):  
V. Koundy ◽  
C. Thiebaut
Keyword(s):  
Hot Isostatic Pressing ◽  
Shell Element ◽  
Element Model ◽  
External Pressure ◽  
Buckling Mode ◽  
Pressing Method ◽  
Isostatic Pressing ◽  
Powder Consolidation ◽  
Rupture Area ◽  
Numerical Finite Element

Powder metallurgy techniques are often used in the fabrication of finished and semi-finished articles. At the CEA, a cold followed by a hot isostatic pressing method is used to produce solid forms from various types of powder. Occasionally, during the hot isostatic pressing part of the process, buckling of the titanium envelope near to the sealed end leads to fracture of the can and incomplete powder consolidation. The aim of this paper is to investigate by numerical finite element simulation the fracture process. A 2-D shell element model with Fourier series taking into account plastic deformation of the can material has been considered and used to determine the buckling critical pressure and the corresponding buckling mode. The simulation has been used to eliminate failure of the can by modifying the temperature-pressure schedule or by changing the can design. The calculations show that reducing the sharp angles of the initial titanium can near the rupture area can resolve the buckling problem; however, this solution is not totally satisfactory due to the development of a zone of constriction (breaks and irregularities) in the compacted powder just behind the modified can wall. This geometrical defect leads to difficulties in machining the final product. A better solution to the problem is to increase the initial can temperature prior to application of the pressure. This leads to a can of enhanced ductility with a better ability to deform. This latter solution, which can be employed with or without can modifications, eliminates both the can’s buckling and the zone of constriction. These numerical results have been validated by recent tests performed in our laboratories.

scholarly journals Operations for the preparation of metal powders for hot isostatic pressing

2021 ◽  
Vol 2131 (5) ◽  
pp. 052029
Author(s):  
S Manyanin ◽  
U Vaxidov ◽  
K Maslov
Keyword(s):  
Powder Metallurgy ◽  
Hot Isostatic Pressing ◽  
Third Party ◽  
Metal Powders ◽  
Isostatic Pressing ◽  
Consumption Coefficient ◽  
Machine Parts ◽  
Technological Methods ◽  
Required Quality

Abstract Powder metallurgy as a method of manufacturing and processing metals is very diverse in its technological methods. This makes it possible to obtain parts of the required quality and necessary properties. Using the methods of powder metallurgy production, specialists can produce the latest composite materials, the production of which is impossible by traditional methods. The production of machine parts and mechanisms from metal powders provides significant savings on material, due to the low consumption coefficient. Metal powders are usually manufactured in specialized factories, but sometimes they are produced directly by the consumer; in this case, the manufacturing process is built in direct accordance with the requirements of this consumer. If the powder comes from a third-party supplier, there is a need for special preparation operations, before starting production, to give the powder certain chemical and physical characteristics. Hot isostatic pressing technology is a complex technological process in which a large number of parameters affect the quality of the final product. The complexity of the GIP process lies in various thermal, physical, and mechanical interactions. In this regard, a large role is played by the processes for preparing the powder for the GIP. The article describes the main operations for the preparation of powder for hot isostatic pressing.

Effect of Tooling Material on the Internal Surface Quality of Ti6Al4V Parts Fabricated by Hot Isostatic Pressing

2016 ◽  
Vol 48 (1) ◽  
pp. 34-38 ◽  
Author(s):  
Chao Cai ◽  
Bo Song ◽  
Qingsong Wei ◽  
Wu Yan ◽  
Pengju Xue ◽  
...  
Keyword(s):  
Surface Quality ◽  
Hot Isostatic Pressing ◽  
Internal Surface ◽  
Isostatic Pressing
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