Postweld heat treatment process for large-diameter thick-wall pipeline
The invention relates to the technical field of welding heat treatment, and discloses a large-diameter thick-wall pipeline postweld heat treatment process which comprises the following steps: S1, acquiring characteristic data of a welded pipeline; s2, the installation position of a temperature measu...
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| creator | ZHANG JIE HE CHENXIU SHI WEIDONG WEN ZUOWEI WANG HONGBING TANG ZHIQIANG GUO TONG ZHONG YUAN FU XIAODONG HE SHENG |
| description | The invention relates to the technical field of welding heat treatment, and discloses a large-diameter thick-wall pipeline postweld heat treatment process which comprises the following steps: S1, acquiring characteristic data of a welded pipeline; s2, the installation position of a temperature measuring element is determined based on the characteristic data, and the temperature measuring element is fixed to the inner wall and the outer wall of the welding connector in a spot welding mode; s3, heat preservation cotton is installed on the welding pipeline; s4, a medium-frequency induction heating device is installed on the welding pipeline; s5, postweld heat treatment parameters are set; s6, medium-frequency induction heating is carried out; s7, cooling the welded pipeline subjected to heat treatment; in the steps S1 to S7, the inner wall and the outer wall of the welded joint are monitored in different areas; and the wall temperature of the welded joint in the heat treatment process is monitored in real time. |
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| subjects | CHEMISTRY GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUSMETALS OR ALLOYS MAKING METAL MALLEABLE BY DECARBURISATION, TEMPERING OR OTHERTREATMENTS METALLURGY METALLURGY OF IRON MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS |
| title | Postweld heat treatment process for large-diameter thick-wall pipeline |
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