7. Selecting the correct electrodes For repair welding, only lime based {Kb} electrodes should be used, and as a rule, the electrodes {additional material} should be "softer" than the basic material. Exceptions to this rule should be observed. Important:
To reach the theoretical welding quality, the work must not only be performed in a professional manner, the electrode manufacturer's guidelines must absolutely be observed as well. Welding of vertical-down welds on steel components is not permissible!
7.1. Electrode Selection Welding area
Material
BASIC MACHINE Roller frame - Main frame
St 52 - 3 QStE 380 N
LH 690 preheat to app. 100-150째C (210-300째F) ATTACHMENT Blade Bucket
Push frame Bucket arm RL-Boom
Ripper
WEAR ITEMS Adapter, Tooth adapter Ripper
Q St E 380 N HARDOX 400
St 52 - 3
LH 690 preheat to app. 100-150째C (210-300째F) St 52 - 3 Q St E 380 N HARDOX 400
Special steel
Electrode norm description
Protective gas welding wire norm description
according to EN 499: E42 5 B 4 2 H5 according to AWS A5.1-91: E7018-1 H4 R according to EN 757: E 69 6 Mn2NiCrMo B 4 2 H5 according to AWS A5.5-96: E 11018-G
according to EN 440: G4Si1 according to AWS A5.18-93: ER 70 S-6 according to EN 12534: G3CrNi1Mo according to AWS A5.28-96: ER110S-G
according to EN 499: E42 5 B 4 2 H5 according to AWS A5.1-91: E7018-1 H4 R according to EN 499: E42 5 B 4 2 H5 according to AWS A5.1-91: E7018-1 H4 R according to EN 757: E 69 6 Mn2NiCrMo B 4 2 H5 according to AWS A5.5-96: E 11018-G according to EN 499: E42 5 B 4 2 H5 according to AWS A5.1-91: E7018-1 H4 R
according to EN 440: G4Si1 according to AWS A5.18-93: ER 70 S-6 according to EN 440: G4Si1 according to AWS A5.18-93: ER 70 S-6 according to EN 12534: G3CrNi1Mo according to AWS A5.28-96: ER110S-G according to EN 440: G4Si1 according to AWS A5.18-93: ER 70 S-6
Root runs according to EN 499: E42 5 B 4 2 H5 according to AWS A5.1-91: E7018-1 H4 R Cover layers with high-strength electrode according to EN 1600: E 18 8 Mn B 2 2 according to AWS A5.4-92: E 307-15
Root runs according to EN 440: G4Si1 according to AWS A5.18-93: ER 70 S-6 Cover layers with high-strength electrode according to EN 12072: G 18 8 Mn according to AWS A5.9-93: ER307