Weldability test method for evaluating toughness of welding heat affected zone of medium-thickness plate
A technology of welding heat-affected zone and test method, which is applied in the direction of welding/welding/cutting items, welding equipment, welding accessories, etc., can solve the problems of poor accuracy, achieve high accuracy, save man-hours, and reduce the amount of welding wire filling.
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Embodiment 1
[0032] A weldability test method for evaluating the toughness of the heat-affected zone of medium-thick plate welding, comprising the following steps:
[0033] Prepare two test steel plates of the same size to be evaluated, the thickness t1 of steel plate 1 is 50mm, the thickness t2 of steel plate 2 is 50mm, and the steel type is Q690D; adopt 82% Ar+18% CO 2 Gas shielding, solid core wire with a diameter of Ф1.2mm; the first steel plate does not process the groove, and the second steel plate processes the V-shaped groove, and the assembly form is as follows figure 2 As shown, the assembly gap t3 is 0-2mm, the steel plate liner is assembled on the back, the groove is filled by multi-layer multi-pass welding, and the welding is automated with large-scale heat input, and the back does not need to be cleaned and repaired.
[0034] 1. Preparation before welding
[0035] according to figure 2 Cut the test plate according to the pattern. The steel plate 1 does not process the gro...
Embodiment 2
[0042] A weldability test method for evaluating the toughness of the heat-affected zone of medium-thick plate welding, comprising the following steps:
[0043] Prepare two test steel plates of the same size to be evaluated, the thickness t1 of steel plate 1 is 80mm, the thickness t2 of steel plate 2 is 80mm, and the steel type is Q550D; use 82% Ar+18% CO 2 Gas shielding, solid core wire with a diameter of Ф1.2mm; steel plate 1 does not process grooves, and steel plate 2 processes K-shaped grooves. The assembly form is as attached image 3 As shown, the assembly gap t3 is 0 ~ 2mm, and the steel plate liner is assembled on the back, using multi-layer multi-pass welding, automatic large-scale energy welding, and there is no need for root cleaning and repair welding on the back.
[0044] 1. Preparation before welding
[0045] according to image 3Cut the test plate according to the pattern. The first steel plate does not process the groove, and the second steel plate processes t...
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