Z208 cast iron welding line with GB EZC very AWS EC1 
 Description: Z208 is a low-carbon steel core, strong graphite type coating iron welding, cold weld in the slow variable ash cast iron, cracking resistance is poor. AC-DC dual-use, low prices. 
 Uses: gray cast iron welding defects. 
 Chemical Composition of Deposited Metal (%) Chemical Composition C Mn Si SP Fe 
 To ensure that the value of 2.00 ~ 4.00 ≤ 0.75 2.50 ~ 6.50 ≤ 0.100 ≤ 0.150 margin 
 Reference current (AC, DC +) electrode diameter (mm) φ3.2 φ4.0 φ5.0 
 Welding current (A) 90 ~ 120 130 ~ 180 190 ~ 220 
 Note: 
 1. Welding electrodes shall be subject to 150 ℃ or so before baking 1h. 
 2. To withstand stress and shock for the casting and other important structures, not by the electrodes. 
 3. Small castings stiffness is not part of the defects can not preheat welding, and general welding parts to be preheated to 400 ℃, heat slow cooling after welding, the welding could be at the cutting.