合肥工业大学金工实习题库(国外英文资料).docVIP

合肥工业大学金工实习题库(国外英文资料) Metalwork test paper - Fill in the blanks 1. The ordinary heat treatment of steel mainly includes normalizing, annealing, quenching and tempering four kinds. - Method 2, handmade whole mold, mold shape, shape and style of live block dredging. - 3. The gating system is a series of channels for filling cavities and appetites. A complete casting system is usually made up of an outside gate, a sprue, a cross runner, and an inner runner. - 4, sand casting to consider the process factors are parting surface, machining allowance, die - Slope, shrinkage allowance, etc. - 5. The commonly used special casting methods are investment casting, shell casting, EPC and press casting etc.. - 6. The purpose of heating the material before casting is to improve plasticity and reduce deformation resistance so as to improve its malleability. - 7. The defects may be oxidation, overheating, over burning, decarburization and core cracks when heating the material before casting. - 8. The basic processes used in free forging are upsetting, drawing, punching, bending and so on. - 9, model casting is mainly used for a large number of large (single, small, large quantities) production. - 10, the spatial location of welding welding, welding, horizontal welding, overhead welding four. - 11, the main role of welding rod welding core is conductive and filler metal, and the main role of the drug skin is mechanical protection and metallurgical processing. - 12, welding process parameters are welding rod diameter, arc voltage, welding speed, etc.. - 13, C6132 type ordinary lathe can process the maximum diameter of the workpiece 320mm, you in 14, practice in the use of lathes, a total of 12 (or 24) kinds of speed. - 15. The main components of horizontal lathe are bed, gearbox, spindle box, feed box, slide box and knife holder. - 16, the B6050 in B represents planer, 60 represents shaper, and 50 represents the maximum diameter of planer workpiece 1\10, i.e. 500mm. - 17, milling machi