D212 electrode wear line with GB EDPCrMo-A4-03 

 Description: D212 titanium calcium type of CrMo-type welding electrodes can be AC and DC. When welding arc stability, easy slag removal. 

 Use: Single or multi-layer welding the wear parts of various surfaces such as gears, digger, mining machinery. 

 Chemical Composition of Deposited Metal (%) 
 Chemical composition of C Mo Cr 
 To ensure that the value of 0.30 ~ 0.60 ≤ 4.00 ≤ 5.00 


 Surfacing layer hardness: HRC ≥ 50 

 Reference current (AC, DC) 
 Electrode diameter (mm) φ3.2 φ4.0 φ5.0 
 Welding current (A) 90 ~ 120 150 ~ 180 190 ~ 230 


 Note: 
 1. Welding electrodes shall be subject to 150 ℃ or so before baking 1h. 
 2. Large parts should be properly preheated before welding to about 300 ℃, and welding parts of the surface rust and oil removed. 


 D217A hardfacing electrodes meet the GB EDPCrMo-A3-15 


 Description: D217A is a low hydrogen sodium type coating CrMnMo type welding electrodes, the use of DCRP. 

 Uses: mainly used for welding high-strength wear-resistant parts. Such as metallurgical roll 30CrMnSi and 35CrMnSi surfacing and repair, ore crusher parts, mining 4M3 excavator bucket tooth excavator bucket teeth and other welding and so on. 

 Chemical Composition of Deposited Metal (%) 
 Chemical composition of C Mo Cr 
 Guaranteed value ≤ 0.50 ≤ 2.50 ≤ 2.50 


 Surfacing layer hardness: HRC ≥ 40 

 Reference Current (DC +) 
 Electrode diameter (mm) φ3.2 φ4.0 φ5.0 
 Welding current (A) 90 ~ 110 140 ~ 180 180 ~ 220 


 Note: 
 1. Welding electrodes shall be 350-400 ℃ or so before baking 1h. 
 2. Large preheated to 200-300 ℃ before surfacing about the rust and welding parts of the surface and oil removed.