Recently, HBIS Group HANDAN STEEL Refining Factory 3#transferred to a high -strength structure steel 42CRMO for a well -known wind power enterprise, in the main control room of the 3#transfer furnace, the furnace chief Wu Bo issued a instruction to the shooting of Gongwuwei through the intercom. By 1.40 meters, the gun time was 30 seconds, and the gun was lifted out of the steel. "At the same time, Wu Bo and colleagues added the corresponding molybdenum alloy to the steel flow into the steel bag." In the past, the high -strength structural steel was added before the furnace blowing, and now it is evenly added to the steel out of the steel, which effectively reduces the alloy consumption. Wu Bo introduced. Since the beginning of this year, the factory has closely focused on the two core work of "reduced costs and selling prices", and vigorously promoted technological upgrades. The tissue technology backbone set up a low -weight alloy consumption troiders and targeted at 42CRMO high -strength structure steel alloy consumption technology. Covering more and further reduces production costs.

 

The addition of molybdenum elements in the steel can improve the quenchability of steel, which is conducive to eliminating the crispness of the ignition, so that the steel has a uniform fine crystal tissue, and improves the hardness and wear resistance of the steel. The high -strength structural steel tradition with ferromolybdenum alloy is to use waste steel buckets to add it into the furnace before blowing the furnace. This method has a long blowing time. In order to further reduce the consumption of molybdenum alloys, the team's research team has been discussed and tested several times. After consulting the technical information, it is decided to change the molybdenum alloy to the furnace, and evenly add it during the steel out of the steel to increase Metal cost.

 

"The key technique of being equipped with molybdenum alloy in the process of leaving the steel after the furnace is how to reduce the weight of molybdenum burning in the process of steel, ensure the full melting of molybdenum, and increase the income of molybdenum." introduce. In response, the research team optimized the secondary blowing model program of the turn of the furnace according to the bleeding of the furnace, adding the slag to the time to move forward, and control the process temperature in the middle of the smelting. , Low oxygen out of steel to reduce molybdenum and damage.

 

At the same time, special training for key personnel is conducted on the requirements of the time to join the timing of molybdenum alloys in the steel outlet. After the factory joined the innovative alloy in technology, the high -strength structured steel molybdenum alloy acquisition rate increased from about 85%to more than 95%, the cost of alloy was reduced by 6.03 yuan/ton compared with the previous, and the qualification rate of the cast blank increased by 4.1%compared with the previous.