外文翻譯---包鋼環(huán)形爐管坯加熱溫度測試和研究-文庫吧
2025-01-02 23:07 本頁面
【正文】 r and insulation ponents, also called black box. Temperature Recorder Temperature range: Ktype temperature range 1001 290 ℃, resolution of ℃, measurement error %: Stype temperature range of 0 ~ 1 450 ℃。 resolution of ℃, measurement error %。 Channels 14 channel。 memory, 64 kB。 temperature data 43 000: sampling cycle 25 / sl times / 8 h。 data loggers working conditions, the temperature 1300 ℃ for 6h. Experimental Methods Experiments selected ingredients, size and representative as the experimental billet billet. Living in the billets of different temperature settings and different depth holes to play, while measurement of the integrated steel billet furnace gas temperature at the top. Using Ktype thermocouple, or Stype thermocouple, dual wire letter mm, insulated porcelain jacket. Recorder through the puter program, set the sample period is 1 / 20 s. Couple the hot end of the billet temperature firmly into the hole. The cold side of the positive and negative with the recorder corresponds to the positive and negative connections. At the same time recorder to record the number of channels represented by the interface billet temperature hole locations. Incubator placed in the billet ends. Cabinets filled with fireresistant fiber felt. Blank experiment, after the release and through the roller crane is located in the experimental blank space to move, standing for some time after the temperature drop box, remove the recorder. With the puter connected to the recorder to save data to a puter, e to billet heating curve and the temperature change in the direction along the curve of the furnace. 2 Experimental results and analysis Diameter ring furnace 35 m, with high coke mixed gas fuel. Experimental billet size Q270 mmx3 300 mm, made of XCQ16, rolling specifications for the West 219 mmx5 700 mm. Billet in the furnace experiment time 200 min. Baked slab temperature 1 280 ℃, baked in the temperature difference on the slab 5 ℃. billet heating curve Billet placed in the real seabed. Billet center temperature and surface temperature under basically the same. Billets heated to 750 ℃, billet solid transformation endothermic phase change because the heating rate bees smaller. Billet tapping temperature 1280 ℃, the temperature difference on the slab released 5 ℃, the upper and lower temperature 3 ℃. 170mm billet heating temperature after the 1 280 ℃, then the upper and lower temperature 30 ℃. Billet heating temperature is too large is to produce rolling stress. Perforated wall thickness uniformity of the main reasons. Heating temperature is too high because the roof is installed or the thermocouple probe into the furnace depth is inappropriate, not a true reflection of the furnace temperature, the position adjustment of the thermocouple, the measured actual furnace temperature. Billet temperature curve shown in Figure 1. Figure 1 billet heating curve The temperature difference between the crosssection billet 16
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