25 Juni 2015
Cahaya Hati, Puisi calon insyiur, engineer, engineering, fakultas teknik mesin, fatek 2011, insyiur, puisi insyiur, sarjana teknik, teknik mesin, unisma 45, unisma bekasi Tinggalkan komentar
Assalamu’alaikum
Wahai calon – calon insyiur
Tak perlu risau
Tak perlu sedih
Tak perlu kecil hati
Meski bukan ahli agama
Meski bukan ahli tata negara
Meski tak pandai merangkai kata
Meski selalu bermain dg logika
Meski bergelut dg rumus – rumus excata
Tenang, tenanglah…
Jutaan bahkan milyaran umat beragama bergantung padamu
Masjid-masjid nan indah
Bangunan – bangunan yg megah
Jembatan yg kokoh menjulang gagah
25 Oktober 2012
Bahan kuliah, proses produksi proses rool forming, teknik mesin, unisma 45 bekasi, unisma bekasi 1 Komentar
berkaitan dg mata kuliah Proses Produksi with Dr.Eng.Ir. RUDI SUHRADI RACHMAT, M.Eng
Roll forming, sometimes spelled rollforming, is a metal forming process in which sheet metal is progressively shaped through a series of bending operations. The process is performed on a roll forming line in which the sheet metal stock is fed through a series of roll stations. Each station has a roller, referred to as a roller die, positioned on both sides of the sheet. The shape and size of the roller die may be unique to that station, or several identical roller dies may be used in different positions. The roller dies may be above and below the sheet, along the sides, at an angle, etc. As the sheet is forced through the roller dies in each roll station, it plastically deforms and bends. Each roll station performs one stage in the complete bending of the sheet to form the desired part. The roller dies are lubricated to reduce friction between the die and the sheet, thus reducing the tool wear. Also, lubricant can allow for a higher production rate, which will also depend on the material thickness, number of roll stations, and radius of each bend. The roll forming line can also include other sheet metal fabrication operations before or after the roll forming, such as punching or shearing.
Roll Forming Line
25 Oktober 2012
Bahan kuliah, proses produksi proses bending, teknik mesin, unisma 45 bekasi, unisma bekasi 1 Komentar
berkaitan dg mata kuliah Proses Produksi with Dr.Eng.Ir. RUDI SUHRADI RACHMAT, M.Eng
Bending is a metal forming process in which a force is applied to a piece of sheet metal, causing it to bend at an angle and form the desired shape. A bending operation causes deformation along one axis, but a sequence of several different operations can be performed to create a complex part. Bent parts can be quite small, such as a bracket, or up to 20 feet in length, such as a large enclosure or chassis. A bend can be characterized by several different parameters, shown in the image below.
Bending Diagram
25 Oktober 2012
Bahan kuliah, proses produksi proses thermoforming, teknik mesin, teknik mesin unisma\, unisma 45 bekasi, unisma bekasi Tinggalkan komentar
berkaitan dg mata kuliah Proses Produksi with Dr.Eng.Ir. RUDI SUHRADI RACHMAT, M.Eng
Thermoforming describes the process of heating a thermoplastic sheet to its softening point, stretching it over or into a single-sided mold, and holding it in place while it cools and solidifies into the desired shape. The thermoplastic sheet is clamped into a holding device and heated by an oven using either convection or radiant heat until it is softened. The sheet is then held horizontally over a mold and pressed into or stretched over the mold using vacuum pressure, air pressure, or mechanical force. The softened sheet conforms to the shape of the mold and is held in place until it cools. The excess material is then trimmed away and the formed part is released. Excess material can be reground, mixed with unused plastic, and reformed into thermoplastic sheets.
Thermoforming is commonly used for food packaging, but has many applications from plastic toys to aircraft windscreens to cafeteria trays. Thin-gauge (less than 0.060 inches) sheets are mostly used for rigid or disposable packaging, while thick-gauge (greater than 0.120 inches) sheets are typically used for cosmetic permanent surfaces on automobiles, shower enclosures, and electronic equipment. A variety of thermoplastic materials can be used in this process, including the following:
25 Oktober 2012
Bahan kuliah, proses produksi proses injection molding, teknik mesin, teknik mesin unisma\, unisma 45 bekasi, unisma bekasi Tinggalkan komentar
berkaitan dg mata kuliah Proses Produksi with Dr.Eng.Ir. RUDI SUHRADI RACHMAT, M.Eng
Injection molding is the most commonly used manufacturing process for the fabrication of plastic parts. A wide variety of products are manufactured using injection molding, which vary greatly in their size, complexity, and application. The injection molding process requires the use of an injection molding machine, raw plastic material, and a mold. The plastic is melted in the injection molding machine and then injected into the mold, where it cools and solidifies into the final part. The steps in this process are described in greater detail in the next section. Lainnya
25 Oktober 2012
Bahan kuliah, proses produksi proses blow molding, teknik mesin, unisma 45, unisma 45 bekasi, unisma bekasi Tinggalkan komentar
berkaitan dg mata kuliah Proses Produksi with Dr.Eng.Ir. RUDI SUHRADI RACHMAT, M.Eng
Blow molding is a manufacturing process that is used to create hollow plastic parts by inflating a heated plastic tube until it fills a mold and forms the desired shape. The raw material in this process is a thermoplastic in the form of small pellets or granules, which is first melted and formed into a hollow tube, called the parison. There are various ways of forming the parison, as explained below. The parison is then clamped between two mold halves and inflated by pressurized air until it conforms to the inner shape of the mold cavity. Typical pressures are 25 to 150 psi, far less than for injection molding. Lastly, after the part has cooled, the mold halves are separated and the part is ejected. Lainnya
25 Oktober 2012
Bahan kuliah, proses produksi fatek unisma, teknik mesin, teknik mesin unisma\, unisma bekasi Tinggalkan komentar
berkaitan dg mata kuliah Proses Produksi with Dr.Eng.Ir. RUDI SUHRADI RACHMAT, M.Eng
Proses Manufaktur
Hot rolling, Cold rolling, drawing, stamping, forging
Welding, brazing, soldering, kelingan
GDC, LPDC, HPDC, SSC (Semi Solid Metal Casting)
Bubut, frais, bor, dll
temonsoejadi 
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