Porous mandrels provide uniform deformation in hydrostatic powder metallurgy

Porous copper mandrels prevent uneven deformation of beryllium machining blanks. The beryllium powder is arranged around these mandrels and hot isostatically pressed to form the blanks. The mandrels are then removed by leaching

Pengembangan Sistem Informasi Produksi pada Nikko Bakery

Nikko Bakery merupkan Perusahaan produksi roti yang berawal dari industri rumahan yang menggunakan sistem konvensional dalam kegiatan produksi sehari-hari. Seiring berjalannya waktu, peningkatan kapasitas produksi menyebabkan informasi ketersediaan bahan baku merupakan hal yang harus diperhatikan untuk peningkatan efisiensi dan mencegah kekurangan bahan baku. Aplikasi ini dapat menghasilkan perhitungan penggunaan bahan baku yang akan mempermudah bagian produksi agar tidak terjadinya pemborosan bahan baku, peringatan akan stok bahan baku yang sudah sampai batas minimum yang berguna dalam menghemat waktu produksi, pembuatan work order yang akan memudahkan bagian produksi dalam memastikan barang apa saja yang akan diproduksi, pembuatan pesanan yang berfungsi untuk menampung seluruh pesanan pelanggan, pembuatan list customer dan supplier yang berfungsi untuk menyimpan seluruh data customer maupun supplier, serta laporan pendukung lainnya

Advanced Beryllium Gyro Technology

This paper describes the process developed for fabricating beryllium gyro components by hot isostatic pressing. Five different components, an inner gimbal, a gyro sleeve, an accelerometer sleeve, an inner cylinder, and an inner cylinder cover, were fabricated. Although the process varied somewhat for each type of specimen, it consisted primarily of vibratory packing, hydrostatic pressing, hot isostatic pressing, and leaching. Since the most challenging component to be fabricated was the inner gimbal, this paper is devoted primarily to the process development of this particular component. Two key developments associated with the fabrication of the inner gimbal were the use of a deformable mandrel and the use of a new type of pressure-transmitting medium. The use of a porous copper mandrel allowed even deformation of the preform during cold hydropressing and, as a result, very accurate pressings could be made. A sodium chloride pressure-transmitting layer around the green compact allowed sealing of the irregular shape in a cylindrical pressing container

Searching for Weak or Complex Magnetic Fields in Polarized Spectra of Rigel

Seventy-eight high-resolution Stokes V, Q and U spectra of the B8Iae supergiant Rigel were obtained with the ESPaDOnS spectropolarimeter at CFHT and its clone NARVAL at TBL in the context of the Magnetism in Massive Stars (MiMeS) Large Program, in order to scrutinize this core-collapse supernova progenitor for evidence of weak and/or complex magnetic fields. In this paper we describe the reduction and analysis of the data, the constraints obtained on any photospheric magnetic field, and the variability of photospheric and wind lines.Comment: IAUS272 - Active OB Stars: Structure, Evolution, Mass Loss and Critical Limit

Investigating the pre-main sequence magnetic chemically peculiar system HD 72106

The origin of the strong magnetic fields observed in chemically peculiar Ap and Bp stars stars has long been debated. The recent discovery of magnetic fields in the intermediate mass pre-main sequence Herbig Ae and Be stars links them to Ap and Bp stars, providing vital clues about Ap and Bp stars and the origin and evolution of magnetic fields in intermediate and high mass stars. A detailed study of one young magnetic B star, HD 72106A, is presented. This star appears to be in a binary system with an apparently normal Herbig Ae star. A maximum longitudinal magnetic field strength of +391 +/- 65 G is found in HD 72106A, as are strong chemical peculiarities, with photospheric abundances of some elements ranging up to 100x above solar.Comment: 8 pages, 6 figures. Proceeding of the 2006 conference of the Special Astrophysical Observatory of the Russian Academy of Science