Heating processing technology of DH36 steel plate

The invention discloses a heating processing technology of a DH36 steel plate. The heating processing technology of the DH36 steel plate comprises the following specific steps of first, heating, wherein the steel plate is heated by utilizing a hardening furnace in the manner of carrying out temperature reduction after temperature rise, and the heating temperature ranges from 880 DEG C to 930 DEG C; second, quenching, wherein water cooling is carried out on the heated steel plate by utilizing a quenching machine, and the temperature of the steel plate subjected to quenching ranges from 520 DEGC to 590 DEG C; and third, natural cooling, wherein the steel plate subjected to quenching is naturally cooled to the room temperature. According to the DH36 steel plate obtained according to the heating processing technology of the DH36 steel plate, the yield strength is no smaller than 400 Mpa, the yield ratio is no larger than 0.85, the content of C is no larger than 0.14, the content of Ceq isno larger than 0.42, and