Take the portable fire extinguisher cylinder (see Figure 1) as an example to introduce the process selection principle of reverse drawing in the production of deep cylindrical deep drawing parts (h>2d), and the method of parameter determination, formula of mold structure and lubricant. Also elaborated. 1. Process analysis According to the product standard, process, material welding performance and cost, the workpiece should adopt the drawing process, and should adopt St12 (German standard DIN1623, domestic Baosteel, WISCO) cold-rolled low-carbon steel plate, this type of steel plate has better pull The deepness and welding performance, the main mechanical properties are shown in Table 1. (1) Determination of blank size and deep drawing process After consulting the "Stamping Design Manual", the trimming margin of this workpiece is set to 10mm. Hot Air Gun,Industrial Hot Air Heat Gun,Heat Shrink Gun,Electric Heat Gun Ebic Tools Limited , http://www.ebictools.com
For more information, please refer to the attachment or Metal Processing (Hot Processing), Issue 19, 2013.
Application of reverse drawing process