907A非耐壓殼體用連鑄鋼板為特殊材料鋼，機(jī)械性能好，強(qiáng)度高。因?yàn)?907A 材料的高強(qiáng)度可以更好地適應(yīng)各種惡劣海況，焊接作為影響強(qiáng)度的重要環(huán)節(jié)，其質(zhì)量顯得尤為重要。

正確選用 與母材匹配的焊接材料是防止焊接缺陷的重要措施。母材為 907A 特殊鋼材，所以使用焊條也選用907A 鋼專用焊條TH907，符合 Q/725-1178-2001，規(guī)格有Φ4.0× 400 mm、 Φ3.2× 400 mm 兩種。

Through the weldability analysis of 907A steel plate, TH907A welding rod was selected. After welding test, it wasused in the product after the welding test was verified to be qualified. Attention was paid to the selection of welding processparameters and the correct welding process, especially the treatment of welding rod before welding, and the control of parts and

weld temperature in the welding process, skillfully grasp the distance and angle between the workpiece and the electrode, strictlycontrol the welding quality, avoid welding defects, so that the welding performance of the product has achieved good results.

TH907A 手工電焊條屬堿性超低氫型， 具有優(yōu)良的塑性及韌性， 擴(kuò)散氫含量低， 適用于直流電源反極性的全位置焊接。 焊條電弧穩(wěn)定， 脫渣容易， 焊縫成型美觀， 具有優(yōu)良的抗裂性能。 可用于 907A 鋼及相同強(qiáng)度級(jí)別低合金結(jié)構(gòu)鋼的焊接。