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    • 3. 发明申请
    • METHOD OF HEAT TREATMENT OF STAINLESS STEEL.
    • 不锈钢加热处理方法。
    • WO2003070992A1
    • 2003-08-28
    • PCT/SE2003/000259
    • 2003-02-17
    • LINDE AGAXELSSON, Carl-LennartEKMAN, TomasRITZÉN, Ola
    • AXELSSON, Carl-LennartEKMAN, TomasRITZÉN, Ola
    • C21D1/74
    • C21D6/002C21D1/52C21D9/0056
    • A method of heat treating stainless steel in the form of blanks, piping, tubing, strip or wire like material, such as strip, sheet, wire or rods after rolling said material in a heat treatment furnace at a temperature higher than about 900 °C. The invention is characterized in that it includes a preheating stage (1) and a final heating stage (2), wherein in the preheating stage flames (5) from burners (4) are directed towards the surface of the material (6) so as to impinge on the surface of the material (6); in that burners (4) situated in the preheating stage are driven by a liquid or gaseous fuel which is caused to burn with the aid of an oxidising gas that contains gaseous oxygen; in that the material (6) is held in the preheating stage (1) long enough to obtain at least some degree of oxidation on the surface of the material (6); and in that the material (6) is heated further in a following final heating stage (2) by means of burners situated in a furnace that are driven by a liquid or a gaseous fuel and an oxidising gas.
    • 在热处理炉中在高于约900℃的温度下将所述材料轧制之后,以坯料,管道,管材,带材或线材等材料(例如条,板,线或棒)的形式热处理不锈钢的方法 。 本发明的特征在于它包括预热台(1)和最终加热台(2),其中在预热阶段,来自燃烧器(4)的火焰(5)指向材料(6)的表面,以便 撞击在材料(6)的表面上; 因为位于预热阶段的燃烧器(4)由液体或气体燃料驱动,所述液体或气体燃料借助于含有气态氧气的氧化气体而燃烧; 因为材料(6)被保持在预热阶段(1)中足够长以在材料(6)的表面上获得至少一定程度的氧化; 并且在随后的最终加热阶段(2)中通过位于由液体或气体燃料和氧化气体驱动的炉中的燃烧器进一步加热材料(6)。