Multi-Step Sheet Metal Forming Of Aerosol Can’s Coping

Recent years, with the rapid growth of the price of tinplate, the manufacturers of can in home and overseas have to look for countermeasure to reduce the cost, and one of which is reducing the thickness of the coping. Aerosol Can is a kind of airproof package container, which is usually made of tinplate and aluminium, the manufacture of its coping needs complicated technics, multi-step forming is often adopted. By using the FEM software DYNAFORM and the basic theory of FEM and practical production status in sheet metal forming, the mold and parameters and characters of the coping forming of Aerosol Can were gained.In this paper, the influence of materials and reducing thickness to the performance of the blank is also discussed, the aim of which is to provide the paractical production with theoretical guidance.There are several researches in this paper, as follows mostly:1. The characteristics of aerosol can’s coping stretching were studied. According to a can’s coping work drawing, several process cases were figured out. Applying the FEM software DYNAFORM to simulate the deforming, a proper manufacture process was offered and used to practical production.2. The calculation of material T3, T4CA, T2BA and T2.5BA of different thickness for every step was done, and the mix influence of materials and thickness was analysed.3. A orthogonal simulating experiment for researching the influence of several factors on stamping was carried out ot find out which factor is playing a leading role.4. Three fillets on different lacation of workpiece were studied seeking the relationsipsbetween the drawing quality of coping and fillet radius.5. Comparing the deforming courses of the key steps of two cases to provide a new technique direction to the production.