Welding material for ZG33Cr25Ni14
A zg33cr25ni14, welding material technology, applied in the direction of welding/cutting medium/material, welding medium, welding equipment, etc., can solve the problems of hidden dangers in stability and safety, unsatisfactory high-temperature mechanical properties of welds, etc., and achieve superior synergistic functions , high temperature mechanical properties advantages, the effect of excellent corrosion resistance
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Embodiment 1
[0019] Two nickel-based rolled plates with a size of 450mm×75mm×20mm were selected as welding samples, and a V-shaped butt groove was adopted. The groove pattern was: the length of the blunt edge was 1mm, and the groove angle was 60°.
[0020] GTAW welding process is used to weld the above-mentioned welding samples; the welding machine model used is WSM-4000 inverter pulse argon arc welding machine; the welding material used is a welding wire with a diameter of φ2.4mm, and its composition is: C 0.03% , Cr 16.8%, Fe7.2%, Mn 0.4%, Nb 2.45%, Si 0.85%, S 0.002%, P 0.002%, Ni balance.
[0021] The connection between the welding machine and the welding sample is direct current connection. The welding process includes the following steps:
[0022] (1) Clean the surface of the groove of the sample to be welded, keep it clean and dry, then connect the groove according to the above-mentioned V-shaped butt joint, fix the position by spot welding, and then pass argon to protect it;
[0023] (2) ...
Embodiment 2
[0026] Two nickel-based pipe sections with specifications of φ120mm (outer diameter) × 15mm (wall thickness) × 150mm (length) are selected as welding samples, and U-shaped butt grooves are used. The groove form is blunt edge length 1mm and radius 4mm. The bevel angle is 25°.
[0027] Using the same welding materials, equipment and welding process as in Example 1, the welding samples were welded. The connection between the welding machine and the welding sample is direct current connection.
[0028] The welding process includes the following steps:
[0029] (1) Clean the surface of the groove of the sample to be welded, keep it clean and dry, then connect the groove according to the above U-shaped butt joint, fix the position by spot welding, and then pass argon to protect it;
[0030] (2) Perform bottom welding on the welding sample, with a welding current of 90A, a voltage of 12V, and a welding speed of about 0.8mm / s, with two layers welded;
[0031] (3) Fill welding and cover weldin...
Embodiment 3
[0032] Example 3 (comparative)
[0033] The welding material in Example 1 was changed to ERNiCr-3 welding wire with a diameter of φ2.4mm, and other conditions remained unchanged.
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