| 摘要 |
Cutting head usable equally well with "head mixed" blowtorches (1) as with "premixed" ones, comprising a male part (6) and a female part (7), and characterized in that: (a) the end of the male part in contact with the blowtorch has a flange (20) the diameter of which is less than that of the chamber (5) into which open conduits (3 and 4) for the heating oxygen and gas of a "head mixed" torch, or the conduit for the heating mixture of a "premixed" torch, and which is crossed by at least two diametrically opposed holes (21); (b) between the male part and the female part is provided an annular passage (22) for the heating oxygen/gas mixture; and (c) in communication with the holes (21) are hollows (21a) provided in the lower protruding part of the flange, or assemblies provided in the female part, which make possible the aspiration of gas, said hollows or assemblies being in communication with the annular passage (22).
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