а. Remove the oil stain, rust, water and sundries from the welding wire, working groove and its adjacent surfaces.
б. Алкални шипки за заварување и флукси се користат и темелно се сушат.
в. DC reverse connection and short arc welding shall be adopted.

E. Заварувањето се врши со релативно силни спецификации.

а. Reduce the content of harmful elements such as sulfur and phosphorus, and weld with materials with low carbon content.
б. Certain alloy elements are added to reduce columnar crystals and segregation. For example, aluminum and iron can refine grains.
в. The weld with shallow penetration shall be used to improve the heat dissipation condition so that the low melting point material floats on the weld surface and does not exist in the weld.
Д. Welding specifications shall be reasonably selected, and preheating and afterheating shall be adopted to reduce the cooling rate.
е. Adopt reasonable assembly sequence to reduce welding stress.

Мерки за да се спречат пукнатини за загревање:
а. Pay attention to the strengthening effect of metallurgical elements and their influence on reheat cracks.
б. Reasonably preheat or use afterheat to control the cooling rate.
в. Намалете го преостанатиот стрес за да се избегне концентрацијата на стресот.
Д. During tempering, avoid the sensitive temperature zone of reheat cracks or shorten the residence time in this temperature zone.

а. Се користи низок водороден алкален заварување, се користи строго, се чува на 100-150 ℃ и се користи при земање.
б. The preheating temperature shall be increased, the post heating measures shall be taken, and the interpass temperature shall not be less than the preheating temperature. The reasonable welding specification shall be selected to avoid brittle and hard structures in the weld.
в. Изберете разумна секвенца за заварување за да ја намалите деформацијата на заварувањето и стресот на заварувањето.
Д. Conduct hydrogen elimination heat treatment in time after welding