U-rib inlaying section full penetration welding process method
A welding process and a technology for inserting and inserting sections, which are applied in the field of full-penetration welding of U-rib inserting and inserting sections, can solve the problem of failure to achieve penetration welding at U-rib inserting and inserting sections, reduce the mechanical properties of full-penetration welding, and reduce bridge decks. Fatigue and other problems, to achieve the effect of suppressing magnetic bias blowing and incomplete penetration, ensuring welding mechanical properties, and high integrity
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Embodiment 1
[0041] This embodiment provides a full-penetration welding process method for the embedded segment 3, and the process method includes the following steps:
[0042] S1: Open a round end-shaped hand hole 3a on the bottom surface of the interlocking section 3 docked with the U rib 2 (such as Figure 1-2 shown), the size of the hand hole 3a is 100×200mm, which is convenient for the operator’s palm to penetrate and exit;
[0043] S2: At the corner joint between the embedding section 3 and the bridge deck 1, the operator sticks the ceramic corner gasket 4 through the hand hole 3a (such as Figure 4 shown), the model of corner gasket 4 is TG2.34J(α), the angle α is the angle between U rib 2 and bridge deck 1, the thickness of the deck is 12mm, and the groove angle between U rib 2 and bridge deck 1 is 50°;
[0044]S3: The steel liner 5 is used below the arc section, and the steel liner 5 is installed when the unit is manufactured (such as Figure 5 shown);
[0045] S4: At the joint...
Embodiment 2
[0058] The difference between the present embodiment and the first embodiment is that the size of the hand hole 3a, the welding current, the voltage, the welding speed and the gas flow rate are different, including the following steps:
[0059] S1: Open a round end-shaped hand hole 3a on the bottom surface of the interlocking section 3 docked with the U rib 2 (such as Figure 1-2 shown), the size of the hand hole 3a is 150×300mm, which is convenient for the operator’s palm to penetrate and exit;
[0060] S2: At the corner joint between the embedding section 3 and the bridge deck 1, the operator inserts the ceramic corner gasket 4 through the hand hole 3a, the corner gasket 4 is TG2.34J(α), and the angle α is U rib 2 Angle with bridge deck 1, deck thickness 12mm, U rib 2 and bridge deck 1 groove angle is 50° (eg Figure 4 shown);
[0061] S3: The steel liner 5 is used below the arc section, and the steel liner 5 is installed when the unit is manufactured (such as Figure 5 s...
Embodiment 3
[0072] The difference between this embodiment and Embodiment 1 is that the corrosion detection step S7 is added, and the process method of the step S7 is as follows:
[0073] S7: According to the same process described in Steps S1-S6 of Example 1, the comparison test block is made by welding the embedded section 3, the U rib 2 test section, and the test bridge deck 1, and the concentration of the comparison test block is 4%. The nitric acid alcohol solution, fully soaked for 10 minutes, took it out, and took a sample of the welded section, and took the sampling picture as a reference standard for repeated operations.
[0074] After the corrosion inspection of step S7 in this embodiment, the state of the comparison test block being subjected to acid corrosion is as follows: Figure 7-9 shown. Due to the same process as steps S1-S6, Figure 7 It can reflect the macroscopic acid etching condition of the weld between the interlocking section 3 and the bridge deck 1, Figure 8 I...
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