MWA 312R (AWS A5.4 E312-17)
Due to exceptional strength and crack resistance, it is ideal for repairing tools, dies, spring steel and any dissimilar metal combinations, except for the aluminum and copper alloys. It is also recommended for repairing worn parts and as an underlay for hardfacing.
The ultimate electrode for welding all types of steels, without any danger of cracking or breakage. Special "FERRITE BALANCED" Chemistry also serves as a "STUD PULL" Electrode.
? An engineered deposit chemistry that has the perfect ratio of metallics to offer crack resistance far superior to any other brand.
? All colors are usually kept in stock unmarked.
? Special flux formulation eliminates slag interference in horizontal fillets.
? Slag is designed to turn to powder making this electrode ideal for "STUD PULL" applications.
? Available in TIG form as product code 6007 and in MIG form as product code 7007
MWA 312R适用于焊接所有类型钢的全能型焊条，没有任何破裂或断裂的危险。特殊的“铁素体平衡”化学成分使其也可作为“螺栓拆除”焊条。
由于其卓越的强度和抗裂性，MWA 312R是修理工模具、弹簧钢和任何异种金属组合（铝和铜合金除外）的理想选择。也适用于修理磨损的零件，并用作硬面层的缓冲层。
? 熔覆层具有完美的金属比例，提供远优于任何其他品牌的抗裂性。
? 特殊的焊剂配方可消除横角焊时的熔渣干扰。
? 焊渣被设计变成粉末，使这种焊条成为“螺栓拆除”应用的理想选择。
? 可提供TIG/MIG焊丝
Typical All Weld Metal Chemical Analysis (%)
典型全焊缝金属成分
|
C |
Mn |
Cr |
Si |
S |
Ni |
P |
Mo |
Cu |
Fe |
|
0.1 |
0.8 |
29 |
1 |
0.01 |
9 |
0.02 |
0.7 |
0.06 |
BAL |
Typical All Weld Metal Mechanical Properties（As Welded）
典型全焊缝金属机械性能（焊态）：
Tensile Strength抗拉强度： 128,000 psi(880 N/mm2)
Tensile Strength抗拉强度(工作硬化)： 186,000 psi(1282 N/mm2)
Elongation延伸率： 32%
Hardness硬度： 225 HB
Sizes Available and Recommended Amperages
尺寸/电流：
|
直径(mm) |
2.5 |
3.2 |
4.0 |
|
长度(mm) |
300 |
350 |
350 |
|
pcs/lb |
26 |
14 |
9 |
|
Pcs/kg |
58 |
31 |
20 |
|
电流(A) |
35-70 |
60-110 |
75-140 |
Current电流：AC/DC (+)
Related Specification参考标准：
AWS/ASME A5.4 E312-17
EN 1600: E29.9 R 32
DIN 8556: E29.9 R 23
ISO 3581: E 29.9 R 32
NFA 81-343: EZ 29.9 R 23
Welding Techniques:
The area in which the weld is to be made should be free of rust, grease, paint and other materials which cause weld contamination. A 90ovee joint should be used when joining heavy sections. Maintain a short arc length and use stringer beads.
使用提示：
焊接前清理焊接区域。
焊接厚重零件时，应使用90oV形坡口。
保持短弧，并使用线状焊道。
Welding Positions: Flat, Horizontal, Vertical up, Overhead
焊接位置：平焊，横焊，立焊，仰焊。