Mangweld:
Basic coated electrode depositing 14% manganese weld metal-highly suitable for resurfacing austenitic mangenese steel, MANGWELD is a basic coated, low hydrogen type AC/DC electrode producing an austenitic manganese steel weld metal. By virtue of special flux formulation unique operating characteristics. MANGWELD yields a weld metal of 14% manganese. The welds have excellent wear-resistance in combination with abrasion and high impact. Finely rippled weld beads, steady arc which is easy to strike and re-strike, easily detachable slag are few among many pleasant features associated with MANGWELD.
- Highest manganese recovery in the welds, ensuring exceptional toughness, abrasion and wear resistance in combination with high impact.
- Excellent resistance to gauging abrasion.
- Welds are air-toughening and remain in the austenitic state with retained carbide in solution even on air cooling.
- The deposit, in the as-welded condition, has a hardness of 200- 250 Brinell, which rises rapidly to over 500 Brinell through workhardening under severe impact and cold working. Depending on the degree of impact, the metal on the surface acquires a suitable hardness and yet the austenitic structure of the deposit enables the metal below the surface to retain a high degree of toughness.
Identification:Name Printed
- Rock crushing jaws.
- Crusher jaws and hammers
- Cement grinder rings
- Bucket teeth and lips
- Rail frogs and switches.
- Rail crossovers
- Muller tyres
- Manganese steel castings
Chemical analysis of all weld deposits(%):
| Carbon |
Manganese |
Silicon |
Sulphur |
Phsophorus |
| 0.80 |
12-13.5 |
0.80 |
0.030 |
0.030 |
Welding current ranges and packing data for sizes manufactured:
| Size(DxL) mm |
5 x 450
| 4 x 450
| 3.15 x 450
|
| Current(Amp)(DC+ or AC) |
160-200 |
130-160 |
90-120 |
| Qty.(kg.)/carton |
30 |
50 |
75 |
Notes on usage:
- Ensure that the surface to be built up is free from rust, dust, grease or any foreign matter.
- Remove by grinding any work-hardened zone or cracked or spalled metal. Use a magnet to check this. The work- hardened metal is magnetic, whereas the normal base metal is non-magnetic.
- Hold a short arc to prevent excessive loss of manganese. Hammer lightly the bead surface immediately after welding to compensate for shrinkage particularly on multiple layer deposits.
- When welding on austenitic manganese steel a few additional precautions are necessary since prolonged heating of the base metal at over 260°C (500°F) tends to cause embrittlement in it. As such, every possible effort should be made to prevent excessive heating of the base metal.
- Keep the welding current as low as possible.
- Avoid excessive weaving and very thick beads in one layer. Beads should normally be not longer than about eighty millimeters (three inches) and should be so placed as to permit fairly uniform distribution of heat in the casting.
- Redry electrodes at 300°C for one hour before use.
