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適用于焊接所有類型鋼的全能型焊條，沒有任何破裂或斷裂的危險。特殊的“鐵素體平衡”化學成分使其也可作為“螺栓拆除”焊條。
由于其卓越的強度和抗裂性，MWA 312R是修理工模具、彈簧鋼和任何異種金屬組合（鋁和銅合金除外）的理想選擇。也適用于修理磨損的零件，并用作硬面層的緩沖層。
? 熔覆層具有完美的金屬比例，提供遠優于任何其他品牌的抗裂性。
? 特殊的焊劑配方可消除橫角焊時的熔渣干擾。
? 焊渣被設計變成粉末，使這種焊條成為“螺栓拆除”應用的理想選擇。
? 可提供TIG/MIG焊絲
Typical All Weld Metal Chemical Analysis (%)
典型全焊縫金屬成分
|
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）
典型全焊縫金屬機械性能（焊態）：
Tensile Strength抗拉強度： 128,000 psi(880 N/mm2)
Tensile Strength抗拉強度(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/電流：
|
直徑(mm) |
2.5 |
3.2 |
4.0 |
|
長度(mm) |
300 |
350 |
350 |
|
pcs/lb |
26 |
14 |
9 |
|
Pcs/kg |
58 |
31 |
20 |
|
電流(A) |
35-70 |
60-110 |
75-140 |
Current電流：AC/DC (+)
Related Specification參考標準：
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：
焊接前清理焊接區域。
焊接厚重零件時，應使用90oV形坡口。
保持短弧，并使用線狀焊道。
Welding Positions: Flat, Horizontal, Vertical up, Overhead
焊接位置：平焊，橫焊，立焊，仰焊。
