本发明公开一种普通步进式加热炉加热纯钛铸坯均热段温控方法,将电子束冷床炉生产出来的纯钛铸坯经过铣面、倒角、取化学成分试样、修磨、涂防氧化层后装入步进式加热炉进行加热,加热温度按特殊要求限定,在预热段及加热段的加热方式为常规加热。通过该加热办法可较好解决热轧卷卷头、卷中、卷后的力学性能不一及卷剪板后的不平度问题。用该温控办法不但可保证卷头、卷中、卷后的力学性能在符合国标的前提下,而且可实现卷头、卷中、卷尾的抗拉强度偏差控制在30MPa以内,还可使剪板后板材的不平度控制在国标范围内。大幅度提高热轧卷板的品位,还可减少拉矫等生产工序。简化了生产流程,大大降低后续板卷的生产成本。
The invention discloses a method for controlling the temperature of a soaking zone during heating of a pure-titanium ingot blank with a normal stepping heating surface. According to the method, a pure-titanium ingot blank produced with an electronic beam cold hearth is subjected to milling, chamfering, chemical component sampling, trimming and anti-oxidization layer coating, and is then loaded into the stepping heating surface to be heated; the heating temperature is limited according to special requirements; a conventional heating manner is adopted in a preheating segment and a heating segment. By adopting the heating method, the problems of different mechanical performance at the head, middle and tail of a hot roll and unevenness of a coiled-cut plate are solved. By adopting the temperature control method, the tensile strength deviation among the head, middle and tail of the hot roll can be controlled within 30MPa on the premise that the mechanical performance of the head, middle andtail of the hot roll conforms to the national standard, and the unevenness of a sheared plate can be controlled within the international standard range. By adopting the method, the level of a hot-rolled plate is raised greatly, and the production procedures of tensioning and rectifying can be reduced. The production flow is simplified, and the production cost of a subsequent coiled sheet is lowered greatly.