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In the selection of equipments, the suitable model of injection machine was given out according to the process parameters. And the related equipments, inculding auxiliary equipment, measuring equipment, transportation equipment, drying equipment, granulation equipment, were presented combined with relevant information.
Through the calculation of material balance, the working hours, corresponding numbers of major equipments were determined. And also the yield and amount of loss and waste in each unit were listed which was subsequent the important accordance for determing the amount of raw materials.
In the content of energy balance calculation, the amount of cooling water and chilled water was decided through the energy calculation of the injection machine and mold, further, the specific amount of power consumption in the design was determined.
In the non-process design, the safety, environmental and other non-technological factors were considered, and the staff arrangements and other related matters were listed. Through economic accounting, the cost of the design was estimated. The plant layout design was the final content, in which the principles and requirements of plant layout were briefly introduced. And the specific arrangement of the workshop in the design was illustrated.
目录
1 绪论 1
1.1 文献综述 1
1.2 常用汽车保险杠种类 2
1.3 PP汽车保险杠的发展背景 3
1.4 保险杠塑料品种 5
1.5 塑料管材专用料应用及特点 6
2 配方设计 8
2.1 配方选择 8
2.2 成型方法的选择 17
3 总工艺流程 19
3.1 总工艺流程图 19
3.2 原料预处理 20
3.3 造粒方式 26
3.4 造粒螺杆参数设计 27
3.5 注塑成型 35
4 设备选型 41
4.1 筛选设备 41
4.2 混合设备 41
4.3 造粒设备 43
4.4 计量设备 44
4.5 注射机 46
4.6 辅助成型设备 48
5 物料衡算 54
5.1 物料衡算图 54
5.2 工作时间和天数确定 55
5.3 保险杠原料用量 55
6 能量衡算 59
6.1 注塑机衡算图 59
6.2 注塑机所需冷却剂体积 60
6.4 冷却水和冷冻水的用量计算 64
6.5 热量衡算 64
7 车间非工艺设计 66
7.1 给水水源 66
7.2 循环水处理的水质稳定 66
7.3 供电 66
7.4 供热及冷冻工程 67
7.5 采暖通风及空气调节 67
7.6 安全防火 68
7.7 环境保护 68
7.8 人员编排 69
7.9 环境保护 69
8 经济核算 70
9 车间布置 72
9.1 车间的基本组成 72
9.2 车间布置设计的原则 72
9.3 车间厂房整体布置的形式和其它 74
致谢 75
参考文献 76
附录 77
1 绪论
2. 配方设计
2.1 配方选择
2.1.1 聚丙烯基料的选择
聚丙烯具有较好的透明性，耐冲击性和耐低温性，耐化学性能好，成本低廉，轻量化，可循环再用等优点。
按国际标准分类，聚丙烯(PP)分为均聚聚丙烯(PP-H)、嵌段共聚聚丙烯(PP-B)和无规共聚聚丙烯(PP-R)
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