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利用钢管内部不同深度预埋的热电偶表征钢管温度场的变化,研究感应加热过程中Q235钢管内部温度场的演变规律。结果表明:钢管感应加热过程中,加热速度在居里点后减小。无加热棉条件下,700℃之前温升为2.20℃/s,700℃之后的温升为0.29℃/s;加入保温棉后,700℃之前温升为2.43℃/s,700℃之后的温升为0.54℃/s。感应加热过程中,由于钢管内外表面散热,集肤效应导致的内热源并没有导致钢管内部有较大的温度畸变。保温材料的存在,减小了钢管内部的温差。
The variation of temperature field in steel pipe was characterized by thermocouple embedded in different depths of steel pipe. The evolution of temperature field in Q235 steel pipe during induction heating was studied. The results show that during the induction heating process, the heating rate decreases after the Curie point. Without heating, the temperature rise before 700 ℃ is 2.20 ℃ / s, and the temperature rise after 700 ℃ is 0.29 ℃ / s. The temperature rise after 700 ℃ is 2.43 ℃ / s after adding insulation cotton, the temperature after 700 ℃ Liter to 0.54 ° C / s. Induction heating process, due to internal and external surface of steel heat, skin effect caused by the heat source did not lead to large internal temperature distortion of steel. The existence of insulation materials, reducing the temperature difference inside the steel pipe.