Investigation of the press piercing mill process

Simulation of deformation and temperature in press roll piercing

“…In other words, the mandrel force becomes a minimum at a certain plug top radius. The fact that there exists the optimum plug shape at which the mandrel force becomes a minimum is confirmed by the experiments using hot steel billets [3,7]. Fig.…”

“…There are three types of piercing: press roll piercing [1][2][3][4][5][6][7], barrel-type rotary piercing [8][9][10][11][12][13][14][15] and corntype rotary piercing [16,17]. The barrel-type rotary piercing is known as Mannesmann piercing, in which the shape of the * Corresponding author.…”

Energy Transformation During the Pierce Process in the Production of Seamless Pipes

“…Following the cross roll piercing operation, the tick-walled hollow shell is rolled out in the same internal energy in the pilgering stand, in which the tick-walled hollow shell is elongated to the finished tube dimensions by the discontinuous forging action of the pilger rolls on a mandrel located inside the hollow shell [9]. Numerous experimental and analytical studies and the computer programs that can analyze the deformation and temperature of a material during roll piercing processes in seamless pipe production have been performed [10][11][12][13][14][15]. This paper aims to formulate a mathematical model for energy transformations during the piercing process, i.e.…”