镀锌专业英语.doc

1 -热镀锌专业英语单词表热镀锌专业英语单词表一、一、 equipments of the line：生产线设备：生产线设备 entry section：入口段cleaning section：清洗段coating section：镀锌段exit section：出口段1、entry coil car：入口钢卷小车：入口钢卷小车entry section saddle：入口钢卷鞍座hot-rolled steel strip，hot strip：热轧钢板 cold-rolled steel strip，cold strip：冷轧带钢coil car frame：车架 lift platen：提升盘 hydraulic lift cylinder：提升液压缸 hydraulic motor：液压马达 power track：拖链hose and cable：软管和电缆 AC motor：交流电机 speed reducer the lower blade is movable and actuated by hydraulic cylinder, articulated rod and double levers in V. A special pin is provided to avoid any shearing operation during the maintenance periods. Blades are in special steel x 100CrMoV51; each has four cutting edges for low maintenance and long life. The moveable blade has a slight slope, and the fixed one is straight. The moving holder slides in machined ways on the shear side frame. These ways are lined with replacement brass wear plates. -The rigid frame is of fabricated welded design. Guides and supports are mounted so as to avoid hurting of the 28ends during feeding and contact with blades while running. -Just before the shear blades, a low pinch roll unit is mounted, actuated by 2 pneumatic cylinders with rack and pinion system for synchronisation. Top roll is fixed and driven by hydraulic motor, the bottom roll is moveable and idle. The purpose of this pinch roll is to clamp the strip during cutting sequence, to thread the front end of strip into the shear, and to discharge the last crop end. A photocell in combination with a pulse generator signal, ensures that the latter is long enough (to avoid the falling of small residual pieces in the machine). Note: The shear item 168, at bottom pass line, includes a second pinch roll unit, identical to the pinch roll here above, and mounted on the frame of the shear, at exit side. The purpose of this additional item is to deliver the scrap pieces onto the conveyor dedicated to the removal of scraps in cross direction at bottom pass line (see item 172). -For purpose of easy maintenance, the N° 1 and N° 2 shear housings are mounted on slides; with this system, the two superposed shears can be transferred off line by an auxiliary manual hoist. -The gap between the blades is adjusted manually by a screw system.293. Welder Carriage The carriage will be moved by means of AC-servo motor of changeable speed through ball screw. The carriage will move at right angles with the strip, supported by guide ways which are fitted to the main base. A shearing mechanism, welding electrode mechanism, welding transformer, etc. are incorporated in the carriage. The carriage will conduct welding by moving to driving side (DS). Shearing unit The welding machine has a double cut shear available for simultaneous cut of leading and trailing coils having been clamped to make correct lapping of the both ends of leading and trailing strips. The relationship between upper and lower parts can be located correctly by means of the guide pins. Electrode heads The upper and lower electrode heads are composed of an electrode housing of copper alloy ,and electrode shaft subjected to internal water cooling effect, electrode wheel, bushes, caps, etc. They are available for easy conversion of electrode wheel. The changing time for complete electrode assembly:3 min per one piece under normal condition. Clamping unit30A beam-type clamping unit will be equipped on the entry and exit sides of the main base. The entry clamp will clamp trailing coils, move in the line direction after sheared, and lap both ends of the strips. When the entry clamp moves for lapping, the exit clamp will incline the leading coil so that the both ends of the coils may not come in contact with it.4. FURNACE GENERAL DISPOSITION The proposed furnace is of the vertical continuous annealing type suitable for processing strip to automotive quality. The main characteristics of the proposed equipment are: - A preheating section able to heat up the strip by recovering heat in the exhaust gases of the heating section. The advantages of the preheat section are: - the preheating section will provide an energy saving of approximately 7 to 8% on the gas consumption. - the strip temperature at the exit of the preheat section will be around 180 to 200°C and the thermal shocks on the first deflector rolls of the heating section will be decreased. This is very favorable for the life time of the rolls and the31strip tracking. - the strip is heated by blowing hot atmosphere gases on the strip, providing an efficient cleaning of the surface. - A multipurpose heating section provided with complete radiant tube heating capacity. This arrangement is the most suitable to the actual requirements for the following reasons: - in combination with the preceding electrolytic cleaning section, it guarantees the zinc adherence in continuous and transient operations. - the moderate furnace temperature in the radiant tube heating section w。