Investigation into Manufacturing of Very Long Cups by Hydromechanical Deep Drawing and Ironing with Controlled Radial Pressure

Hydroforming highlights: sheet hydroforming and tube hydroforming

“…They also showed that the process of hydroforming improves the part accuracy greatly. Further, Yang et al [31] proposed another new control method for the reverse hydromechanical deep drawing. After the first deep drawing process, a subsequent hydromechanical reverse redrawing with controlled radial pressure and final ironing to control the thickness and outer surface appearance was employed.…”

Influence of Punch on Blank Holder Pressure in Hydroforming Deep Drawing Process

“…The fluid pressure effects on radial, hoop and drawing stresses of blanks in during the process. The various types of fluid forming are Hydroforming process [1][2][3][4][5], hydro mechanical deep drawing process [6][7][8], Aquadraw process [9], hydraulic counter pressure process [10][11][12].These processes have some differences and some features are common. These principles are utilized for imp rovement in production of drawing cups with help of hydraulic pressure through conventional methods.…”

Mathematical Modeling of Drawing Stresses of Magnesium Alloys Through Hydroforming Deep Drawing Process Using Heavy Machine Oil Medium

“…The pressure on the flange is more uniform which makes it easiest to c hoose the parameters in simulat ion. The pressure in the die cavity can be controlled very freely and accurately, with the approximate liquid pressure as a function o f punch position, the parts can drawn without any scratches on the outside of the part and also obtained in good surface finish, surface quality, high dimensional accuracy and comp licated parts [12][13][14][15][16][17].In the hydro forming deep drawing process the pressurized flu id serves several purposes are supports the sheet metal fro m the start to the end of the forming process, thus yielding a better formed part, delays the onset of material failure and reduces the wrinkles formation. The advantages of hydraulic pressure forming deep drawing techniques, increased depth to diameter ratio 's and reduces thicknes s variations of the cups formed are notable.…”