毕业论文关键字：锡磷青铜；电子接插件；产品设计；工艺流程

General Description of the Design：The graduation design of my topic is: copper alloy for electronic connectors with the product process design. Due to the topic name is not directly tell me what copper alloy should be adopted , so I use Duxiu Knowledge Search Database to search and draw the conclusion of tin phosphor bronze.

Due to the rapid development of the electron,communications and automobile industry,  the demand of tin phosphor bronze strip of connectors is growing, and the quality requirements will continue to improve. This prompted domestic copper strip enterprise, have aimed at this kind of tin phosphor bronze strip for technological transformation and related products for the development. Tin Phosphorus bronze as elastic copper alloy material, in the electronic, communications, electrical equipment is used to making all kinds of connectors, plug-in, contactors, relays, and spring components. Inserting elements is mainly used in computer and automobile industry, the design of products is mainly used in the computer industry. With the development of computer, communication equipment of the device performance enhancement , the selection of the copper alloy requirements are increasingly high. Now the domestic tin phosphor bronze strip production technology mature, and the market competition is intense, has the production of such products of high precision manufacturers such as Anhui Xinke, Ningbo Xingye, Fujian Zijin and Jiangxi copper. Shanghai aluminum Copper Co., Ltd. stripas our graduation internship trainee company, also can produce high precision tin phosphor bronze strip production technology and equipment. So after selected the topic, not only own a large amount of relevant literature retrieval, and under the guidance of teacher , we have carried out for two weeks in Shanghai aluminum Copper Co., Ltd. to do the production practice, which made I had a more real understanding the subject, also have a preliminary to the graduation design scheme.

The topic mainly of tin phosphor bronze with product standards, process, procedure, equipment strength, motor capacity, load capacity of equipment, preparation of the main technical and economic indicators of the workshop, design and calculation, to promote the development and application of this kind of product has actual significance. According to the design requirements of the task book, smelting system of products, rolling system and force to parameter design calculation and equipment capacity and strength checking to complete the process requirements, reach the requirements of product delivery. Finally according to the use of product solutions and products and the performance set the brands of products for QSn8-0.3, delivery status hard state. The dimension of the material for 13 * 430 * 20000 mm, the size of the finished for 0.5 x 100mm, the chemical composition 7.9%-8.0% Sn, P 0.03%-0.35%, 0.2% of Zn, 0.2% Ni, 0.1% Fe, 0.05% Pb, residual content are for the production process of Cu. The design selection of tin phosphor bronze strip is approximately the horizontal continuous casting strip preparation. After homogenizing annealing procedure of milling surface, and then a processing rate of cold-rolled cogging, intermediate annealing heat treatment, cold rolling, finished product annealing treatment to produce. Besides melting, straightening straight As well as the shear process is also essential.

Complete the product process design involves very large amounts of data, in addition to using Microsoft Excel can be quick to calculate data, force parameters are calculated by VB program to that chart all required by the software Auto CAD2014. Make full use of the learned in university courses in computer knowledge and computer in the actual production advantages to help complete the design of the product of this process.These are reflected in the many courses in school learning with practical application, can in the practical operation and design to great convenience. Of course, this design not only need I use university time to learn all kinds of knowledge and skills, also need to use a lot of library resources from the rich content of the design, there are helpful to the design of the content closer to the actual production requirements during the design to. Also need her to listen to the guides a teacher to give professional advice, because these views not only from the teacher reserve of professional knowledge and to, it is a combination of a teacher for many years of practical experience in income, so these observations are also very Valuable, so that the content of the design is more reliable.