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Copper and its alloys have many excellent properties, such as conductivity second only to silver, heat resistance, excellent resistance to sea water and atmospheric corrosion, comparable to the gold color. Copper is easily forms an alloy with other elements, thereby improving its mechanical, physical properties. Copper Compared with other metals, is easy to extract from nature, it is a face-centered cubic lattice, prone to plastic deformation, so that processing to obtain various shapes copper; recycled metal copper can be returned directly use its processing waste also it has a high value and recycling. Copper and brass, zinc alloy composition, if only by these two metal elements, that is, ordinary brass.
My topic is automobile industry copper alloy strip product design process, mainly on the design and calculation for brass belt products product standards, process flow, process planning, equipment strength, motor capacity, load capacity of equipment, preparation of the main technical and economic indicators of the workshop.
When I get the issue, a large number of documents be retrieved, To that end, I practiced at THE CHINALCO SHANGHAI COPPER CO., LTD. for a period of two weeks .So the subject content has a more in-depth understanding and understanding. According to the design requirements, the product melting system, rolling system and force can be calculated and the strength of the equipment to meet the requirements of the product delivery status. According to the use of product solutions and products and properties of products made of copper grades H90, raw material size is 170 × 630 × 5100mm, size 2 x 200 x 3000mm, delivery state M state.
H90 copper was the main component of 90% copper, 0.1% iron, 0.03% lead, 0.3% impurities.
Simply put, the production process refers to the production process of products lined up in sequence. Determine the production process design process is an important task, it is directly related to whether the entire mission statement designed to meet the design requirements. A reasonable production process should ensure the completion of the design task book to the provisions of yield and quality, with the lowest consumption, the smallest plant, at least the equipment and the lowest cost, and is conducive to enhancing product quality and future development, with optimal economic effect and better labor working conditions. Meanwhile, in the development process, the general principle is: energy saving, high efficiency, durability, less pollution, and economic.The entire design process of the H90 copper is roughly:
1.The ratio of raw materials, smelting and casting. Cast in the form of semi continuous casting.
2.Hot rolled, milling. After stepping out of the billet furnace roller into reversible hot rolling mill, 9 pass rolling billets,,then through double roll milling, milling to the upper and lower surfaces of the oxide layer were 2.5mm.
3.Take cold rolling intermediate annealing.Namely after the rolling of copper billet into cold rolling machine, the pressure of the system to reach a point set after coiling. After the end of the cold rolling, the copper billet thickness can reach product size requirements.
4.Shear straightening and product quality detection.
When choosing the design of the equipment used, the main reference of aluminum copper Co., the equipment used, the main production equipment and auxiliary equipment: five tons have core frequency induction furnace, five tons screw semi-continuous casting machine, Saw cutting machine, hot reversing mill, coiling machines, milling-sided, four-high cold rolling mill, twelve roll finishing mill, bell-type annealing furnace, horizontal shears, thick vertical shearing machines.
The calculation of rolling force and other mechanical parameters through the preparation of appropriate language to VB and workshop use CAD to draw floor plans, roll maps, and applications to take advantage of the computer in the actual production. And be rack, electrical and auxiliary equipment capacity check, workshop major economic indicators are calculated to ensure that the entire design can be used in actual production.