摘要:
A continuous casting apparatus has a series of rolling stands for lightly rolling a continuously cast strand while the core of the strand is liquid. Each of the rolling stands has a lower module which contains an idler roll disposed at a fixed location. Each of the rolling stands further has an upper module containing a driven roll as well as a hydraulic unit for moving the driven roll towards and away from the idler roll. The upper modules are mounted on pairs of columns where the columns of each pair are located directly across from one another on opposite sides of the strand. The upper modules of two neighboring rolling stands share a pair of columns thereby allowing the distance between such rolling stands to be reduced.
摘要:
According to a method initial temperatures (T1) of strip points (101) are detected when the hot-rolled strip (6) is fed to the production line at the latest. The strip points (101) are monitored on their way through the production line. The hot-rolled strip (6) is subjected to temperature influences (delta T) in the production line (3). The strip points (101), the initial temperatures (T1), the monitored values (W(t)) and the temperature influences (delta T) are supplied to a model (9) for the production line (3). The model (9) determines expected actual temperatures (T2) of the strip points (101) in real time and allocates them to the strip points as the new actual temperatures (T2).
摘要:
This invention is directed to a method for manufacturing metal which includes a step of melting a forged material, and a step of casting a molten forged material to obtain a preform made of forged material, and a step of forging the preform made of forged material, and an apparatus therefor. The preform made of forged material comprises one or more of standardized preforms made of forged material having an approximately cylindrical form with the same cross sectional shape, but a different length. According to the present method and the present apparatus, one may produce metal products to which excellent mechanical properties are impaired by subjecting standardized preforms to the forging treatment with an improved productivity and reduced production cost.
摘要:
A magnetic holding device (10) and a method for the manufacture thereof. The device (10) is used in the field of graphic arts such as foil stamping. The device (10) secures a steel back polymer plate to a heating element, for the purposes of transferring thin metal foil or leaf to paper, card, plastics material or similar media. The device (10) has a space locations a plurality of magnets (13) embedded in a body (14) of the device (10). The magnets (13) are preferably Samarium Cobalt Disk magnets and are held within the body (14) by means of an adhesive such as Loctite 620(null*).
摘要:
A method of manufacturing a honeycomb structure, the method comprising the steps of: forming staggered cells through the entire thickness of a fiber fabric; causing pegs to penetrate into respective ones of the cells, each peg having a cross-section of size smaller than that of the corresponding cell and being made of a material that is suitable for expanding; expanding the pegs so that they fill the cells and exert pressure on the inside faces of the cells; and shrinking the pegs and then withdrawing them.
摘要:
The invention relates to a method and to an installation for producing a metal strip. The aim of the invention is to make sure that the metal strip formed in the casting installation passes through the first cooling and grain texturing phase substantially without being subjected to stress and without effects on the subsequent installations. To this end, the molten bath is fed to a two-roll casting device and a cast metal strip is formed in the casting gap between two casting rolls whose rotational axes lie in a horizontal plane (two-roll casting method), the thickness of the cast strip ranging between 1.0 to 20 mm, preferably between 1.5 to 12 mm. The cast metal strip that freely emerges downwards from the two-roll casting installation is directly deflected from the vertical casting direction to a substantially horizontal transport direction. The metal strip is taken up and conveyed in a controlled manner by means of a first drive roll stand that operates at a first transport speed. The metal strip is then stored for a short time in a strip accumulator, and is then taken up and conveyed by means of a second drive roll stand that operates at a second transport speed. In a final step, the metal strip is coiled up to a bundle under pretension.
摘要:
A method of manufacturing a cylinder head and crankcase for a small engine. A crankcase and a cylinder head are cast to close tolerances and include as-cast mounting flanges, which are assembled in face-to-face contact by employing self-threading screws. Bearing recesses are cast into the crankcase. The cylindrical sidewalls of the bearing recesses are provided with as-cast flutes and roller bearings are press-fitted into the bearing recesses.