军工用黄铜板带产品的工艺设计+图纸(2)

菜单

The important contents include the introduction of yellow copper belt production at home and abroad, put forward the background and the design principle of design project, analyzes the domestic and foreign production background; making production plan, production standards: choose to use production equipment, including main equipment and auxiliary equipment, and to identify the specific parameters; formulate production process in detail the formulation and calculation; smelting and casting system, and the specific rolling system (press rules, speed rules, temperature system, tension system, roller type system etc.); prepare and use the VB program to calculate the parameters of force (force, rolling cold rolling and hot rolling a rolling torque motor. The driving torque of each equipment); the final check ability (roll strength, motor ability, strength of frame, auxiliary equipment for stepping furnace, including transverse shear shearing machine And vertical shear, annealing furnace); calculate the hourly output of the rolling mill; the last is to use the AutoCAD to draw the roller and the internal force diagram, the rolling rhythm map, the roll chart, shop floor plan.

Initial design, under the guidance of the teacher personally led to Shanghai Aluminum Copper Co., Ltd. spread out over a period of two weeks of fieldwork, taste a lot of large mechanical style at the same time, we also embrace learning based rigorous attitude, careful observation of the equipment the main properties and parameters. At the same time, the company manager, the company introduced to us a variety of copper materials on the production process and its attention to matters, and always remind attention to safety.

This design uses a new production process used in Shanghai Aluminum Industry Co. Ltd, roughly as follows:

Ingredients, furnace melting, melt holding, in front of the furnace composition adjustment analysis, casting, sawing, billet heating, hot rolling, double-sided chip milling roughing mill and finishing mill, the bell type annealing, air cushion type continuous annealing, transverse shear shear, finished product inspection, packaging and storage.

Due to H68, H70 brass can be used as a complex cold punching and deep drawing parts. As a radiator shell, pipe, corrugated pipe, shrapnel, gasket and detonator. Because the elastic sheet can be used for manufacturing the bullet, the detonator is to be the bomb materials, so the two brass material just meet the design problem of military with yellow copper with product design process. This design uses the H68 brass to carry on the production process design.

The equipment and parameters used are drawn from the aluminum company.

Standard for H68 products:

Chemical composition of Cu 67.0 ~ 70.0, Zn: margin, Pb: < 0.03. P: less than or equal to 0.01Fe: less than or equal to 0.10. Sb: 0.005, Bi: 0.005, impurity is less than or equal to 0.3 impurities

Mechanical properties: tensile strength: B (MPa): 370, 10: 8 elongation (%): 15, 5: 8 elongation (%): 18.

Heat treatment specification: hot processing temperature 750 ~ 830 degrees C; annealing temperature 520 ~ 650 degrees C; eliminate the stress of low temperature annealing temperature 260 ~ 270.

GB: GB-T11090-89

Product specifications: thickness: 1mm width: 630:mm length: 2000mm

Formulation of smelting system, according to the cast and the proportion of furnace and tonnage of H68 brass calculate the proportion of feeding and the feeding capacity; pressure regulation in considering the workpiece deformation resistance and the work hardening formulation each rolling pass reduction; speed system to comply with low bite, principle of high speed rolling; temperature system developed rules of hot rolled high pressure spray water; tension system are calculated before and after the cold rolling tension; and system make the roll thermal crown.

All the parameters of the force can be calculated using the VB program. Hot rolling pressure using Cely Ke Fu formula, due to cold rolling tension, using the Stone formula.