Method for controlling rail shape of heat treatment steel rail before straightening

• Main Authors: LI JUNZHENG, CHEN LIKE, YANG GUANG, HAN ZHIJIE, GU SHUANGQUAN, ZHANG YICHUN, WU DONGDONG
• Format: Patent
• Language: Chinese; English
• Published: 23.06.2023
• Subjects: CHEMISTRY; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUSMETALS OR ALLOYS; MAKING METAL MALLEABLE BY DECARBURISATION, TEMPERING OR OTHERTREATMENTS; METALLURGY; METALLURGY OF IRON; MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS

The invention discloses a method for controlling the rail shape of a heat treatment steel rail before straightening, and belongs to the field of steel rail production in the metallurgical industry. The control of the rail shape of the heat treatment steel rail before straightening is realized by controlling the rail shape of the tail part of the steel rail at a heat treatment outlet, and when the tail part of the steel rail is in an upwarp state at the heat treatment outlet, the upwarp amount is not more than 20cm; when the tail part of the steel rail is in a downward buckling state at the heat treatment outlet, the clearance between the rail bottom of the steel rail 5 meters away from the tail part and a roller way is taken as a basis, and the clearance amount is not greater than 1cm; the rail shape of the tail of the steel rail at the heat treatment outlet is adjusted by controlling the pressure of a rail bottom cooling medium. The method has the beneficial effects that the rail shape of the tail part of th