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Description of the furnace body of the steel rod quenching and tempering production line
The added 750Kw (1) heating furnace is placed in front of the original 1000Kw heating furnace, and the original equipment constitutes a normalizing and quenching production line;
The added 750Kw (1) heating furnace is mainly heated before the Curie point and heated to 500 ° C, so that the heating capacity of the equipment can be fully utilized, and the heating efficiency is very high;
The original 1000Kw heating furnace will undertake heating from 500 °C to 930 °C, and this part will not be changed;
The added 750Kw (2) heating furnace mainly undertakes tempering and normalizing treatment of steel pipes;
At the station of the quenching liquid collection system, a set of 750Kw normalizing furnace (including compensation capacitor) is also designed. When using this furnace, the intermediate frequency power supply uses the newly added No. 2 power supply (also used for tempering 750Kw power supply), and is switched by changing the furnace switch.
The first set of heating furnace body is 750Kw (1), and two heating furnace bodies are arranged between the three rods. The length of the furnace body is 700mm.
The normalizing and tempering heating furnaces are divided into three groups according to the workpiece size, and each group is divided into two groups according to the size of the steel pipe: φ133~φ196, φ197~φ260, φ261~φ325. The sensor is 700mm long and two sections are connected in series. The lining is knotted, its fire resistance temperature can reach 1760 °C, and the waterway adopts quick-change joint. In order to adapt to different specifications of the heating steel pipe, the heating furnace is designed with a fixed bracket that can be adjusted up and down, and the screw jack is used to drive the screw jack to adjust, so that the center lines of the heating furnaces of different specifications are at the same height. At the exit end of the normalizing and quenching production line, a set of quenching and spraying devices is arranged to quench the steel pipe, and the steel pipe after the quenching process is completed and enters the tempering production line along the conveying rod.
The upper and lower adjustments of the heating furnace and the quenching liquid spray system are all electrically regulated.
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