| 摘要 |
<p>In a method for heat treating metals by carburization in an industrial furnace (1) with a heated enclosure and a quenching chamber (8) using inert gas (I), (I) is recycled after reacting the components of (I) (including carbon dioxide, oxygen and water vapor) with added hydrocarbon in a catalyst bed-containing processing region (3) of the heating chamber, to give carbon monoxide and hydrogen and provide (I) having a regulated carbon potential. An independent claim is included for apparatus for carrying out the metal heat treatment process, comprising the industrial furnace (1) having a heated enclosure, including a treatment chamber (2) and a catalyst bed-containing processing chamber (3), and a quenching chamber (8), plus (as novel features) (a) a gas analyzing carbon potential regulator (5) corresponding to the processing chamber, (b) a circulator (4) for inert gas (I) for recycling, plus regulated supplies of air and reaction gas, (c) a gas-tight valve (6.1) to a burning off site (6) with a pressure regulator (6.2) and a gassing function in the case of pressure reduction (components (a) - (c) being functionally integrated in a regulation circuit (R)) and (d) an inner door (7) for sealing the heated enclosure from the quenching chamber in sealed manner.</p> |
