A kind of full penetration welding process method of u-rib embedded section
A welding process and a technology of the embedded section, which is applied in the field of full penetration welding technology of the U rib embedded section, can solve the problem that the penetration welding of the U rib embedded section cannot be realized, reduce the mechanical properties of the fully penetrated welding, and bridge decks Fatigue and other problems, to achieve the effect of suppressing magnetic deflection blowing and incomplete penetration, ensuring welding mechanical properties and high integrity
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Embodiment 1
[0041] The present embodiment provides a process method for full penetration welding of the inlaid segment 3, and the process method includes the following steps:
[0042] S1: Open a round-end hand hole 3a on the bottom surface of the fitting section 3 that is butted with the U-rib 2 (such as Figure 1-2 shown), the size of the hand hole 3a is 100×200mm, so as to facilitate the operator’s palm to penetrate and exit;
[0043] S2: At the corner junction of the inlay section 3 and the bridge deck 1, the operator sticks the ceramic corner pad 4 through the hand hole 3a (such as Figure 4 shown), the type 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 panel is 12mm, and the bevel angle between U rib 2 and bridge deck 1 is 50°;
[0044]S3: Steel liner 5 is used below the arc segment, and the steel liner 5 is installed when the unit is manufactured (eg Figure 5 shown);
[0045] S4: At the butt joint of the insert...
Embodiment 2
[0058] The difference between this embodiment and the first embodiment is that the size of the hand hole 3a, welding current, voltage, welding speed and gas flow are different, including the following steps:
[0059] S1: Open a round-end hand hole 3a on the bottom surface of the fitting section 3 that is butted with the U-rib 2 (such as Figure 1-2 shown), the size of the hand hole 3a is 150×300mm, so as to facilitate the penetration and penetration of the operator’s palm;
[0060] S2: At the corner junction of the inlay section 3 and the bridge deck 1, the operator sticks the ceramic corner pad 4 through the hand hole 3a. The angle with the bridge deck 1, the thickness of the deck is 12mm, and the groove angle between the U-rib 2 and the bridge deck 1 is 50° (such as Figure 4 shown);
[0061] S3: Steel liner 5 is used below the arc segment, and the steel liner 5 is installed when the unit is manufactured (eg Figure 5 shown);
[0062] S4: At the butt joint of the inserti...
Embodiment 3
[0072] The difference between this embodiment and the first embodiment 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 as described in steps S1-S6 of the first embodiment, a comparative test block is made by welding the inlaid section 3, the U-rib 2 test section, and the test bridge deck 1, and the comparative test block is placed in a concentration of 4% The nitric acid alcohol solution was fully soaked for 10 minutes and taken out, and the welding section was photographed and sampled, and the sampling diagram was used as a reference standard for repeated operations.
[0074] After the corrosion inspection of step S7 in this embodiment, the state of the comparative test block subjected to acid corrosion is as follows: Figure 7-9 shown. Since the same process as steps S1-S6 is used, Figure 7 It can reflect the macro acid corrosion condition of the weld between the insert secti...
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