With high fuel prices, fuel-savings technologies can provide significant economic benefits to steel mills. Reheating furnaces in integrated and mini-mills consume approximately half of the natural gas used to produce hot-rolled products. Recently, Praxair’s Dilute Oxygen Combustion technology (previously demonstrated for productivity improvements on mini-mill billet reheating furnaces) was exte...

The reduction pretreatment process was proposed to be applied large billets for the purpose of alleviating center porosities and reducing rolling ratio. This study focused on evolution behavior closure mechanism porosity in a billet during pretreatment. were characterized by ultrasonic scanning 3D reconstruction. results showed that near surface firstly closed began effectively act at deformati...

The basic relations for calculating the modes of mold punching a cylindrical hollow billet under viscoplastic conditions are given. energy calculation method is used in relation to axisymmetric field displacement velocities. Theoretical calculations work material processing pressure and damage rate performed.

There is considered square billet stretching in a cylindrical matrix. To ensure minimization of an inequality effect ends the matrix there was used leading-in profile area. The investigation impact upon geometry products manufactured carried out. efficient geometrical ratios tool allowing achievement lesser parts end area are revealed.

One of the most effective methods treating intravascular formations at present is use stepped ultrasonic waveguide systems a tubular type (concentrators-waveguides) with hollow spherical tip, presence which makesit possible to supply liquid media dislocation zone an formation aim additional cavitation effect and as efficiently possible. destroy due vibration impact. Based on results analysis fe...

The article considers one of the combined methods severe plastic deformation (SPD), which includes twist extrusion (TE) and subsequent rolling. use forming is promising for industrial use. Titanium grade 1 was used as a material in experiments. Rolling carried out three stages with decrease temperature from 350°C to 180°C number passes heating. accumulated strain degree e = 4.6 at 3 Increasing ...