The ceramic shell mould for precision casting / Kasem Balajiva, Niwat Udompongsanond
โดย: Balajiva, Kasem
ผู้แต่งร่วม: Udompongsanond, Niwat | Thailand Institute of Scientific and Technological Research
Language: English ชื่อชุด: Res. Proj. no. 7/8 Rep. no. 2ข้อมูลการพิมพ์: Bangkok : Thailand Institute of Scientific and Technological Research, 1968 รายละเอียดตัวเล่ม: 16 p.หัวเรื่อง: Ceramic shell mould | Investment castingสารสนเทศออนไลน์: Click here to access full-text สาระสังเขป: An attempt has been made to assist the Royal Mint in the production of a large number of Buddha image casting for a Royal charity programme. A previous study of the method of manufacture indicated that the technique used by the Mint involved several days in-process time. The most time-consuming operation is the mould making, and defects originating from the mould materials add to the delay in the finishing operation. In the present investigation, a faster and more reliable technique of mould preparation, based on the ceramic shell mould process, has been developed. The new method depends largely on the control of the raw materials and processing conditions whilst the actual mould making can be performed by relatively unsiled operators. The technique use colloidal silica sol slurry for the primary dip coat and ethyl silicate-based slurry for the secondary coatings. Moulds can be completed in a few hours under local ambient conditions. The new techniques is applicable to the manufacture of other objects where reproduction of intricate designs and high surface quality are required. Authors
| ชนิดของทรัพยากร | Location | Call number | สถานะ | Last seen | Copy No. | บาร์โค้ด |
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วว. เทคโนธานี | Available | 2018-08-31 | 1 | RP1968/135 | |
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วว. เทคโนธานี | Available | 2018-08-31 | 2 | RP1968/135-2 |
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