METHOD FOR EXPLOSION CUTTING OF METAL STRUCTURES Russian patent published in 1995 - IPC

FIELD: metal working. SUBSTANCE: plate which thickness is equal to that of the structure under working has a notch made in it. The notch is provided for placing a control blasting charge in it. The charge has the form of truncated pyramid with square bases. The large base has a side which length is three times as great as that of the smaller base. The charge is positioned at the surface of the plate opposite to the notch. The charge is initiated from the smaller pyramid base side. The plane in which the cutting begins is used for measuring the cross section area of the control charge. The manufactured operating charge is of square section. Its area is equal to that of the control charge plane in which the cutting begins. The structure under cutting has a notch made in one of its planes. The notch is similar in form to that of the plate. The opposite surface has the operating explosion charge mounted on it so that it may be initiated. EFFECT: increased efficiency due to reduced material consumption. 2 dwg