©
COPYRIGHT 2000 THE ESAB GROUP, INC. LESSON
VIII
8.9.2.6
Wear-O-Matic 6
No AWS Classification
DCEP
or DCEN (Electrode Positive or Negative) Open
Arc-Hardsurfacing Alloy Severe
Impact with Abrasion Carbon
Steel, Low Alloy Steel, Manganese Steel Description:
Wear-O-Matic 6, a 7/64" (2.8 mm) diameter
open-arc wire, is a hardsurfacing
alloy wire designed to provide impact
and abrasion resistance. It may be applied to carbon,
low alloy and manganese steel parts. Wear-O-Matic
6 is recommended for applications involving
impact and abrasion on such parts as con- veyor
buckets, dragline and power shovel bucket lips and
sides, scraper blades, and dredge bucket parts. Procedure:
Wear-O-Matic 6 - 7/64" (2.8 mm) diameter
wire should be deposited with
the open arc only, using direct current, straight
or reverse polarity. The recommended amper- age
range is 250-400 amperes at 30-40 arc volts. Weaving
beads are recommended to develop maximum wear
resistance in this alloy. Preheat
is not required for sound weld metal on two- layer
deposits. Where deposits over 1/4" (6.4 mm) in thickness
are desired, a preheat and interpass tempera- ture
of at least 400°F (204°C) is recommended in order to
achieve maximum impact and compressive wear resistance.
Typical Mechanical Properties:
Wear-O-Matic 6 open-arc wire is a chromium
molybde- num alloy combining
exceptionally good compressive strength
with high hardness. Deposits may be heat treated
and are forgeable. Weld deposits can be cut with oxy-acetylene
torch or by air carbon-arc cutting. Hardness
of Deposited Metal: Two
layer deposit on 1045 steel—weaving technique— 48
Rockwell C Abrasion Resistance:
Moderate Impact Resistance:
Very High Compressive
Strength: High Machinability:
Machinable with carbide tools Relief
Checking: None Typical
Undiluted Weld Metal Analysis (%) C
Mn
Si
Cr
Mo
0.65
2.60
0.20
3.00
0.50
Wear-O-Matic 12
DCEP (Electrode Positive)
Open Arc-Hardsurfacing Alloy
Heavy Impact and Severe Abrasion
Description:
Wear-O-Matic 12 - 7/64" (2.8 mm) diameter wire is a
hardsurfacing alloy
combining good compressive
strength and hardness to provide excellent resistance to
wear caused by heavy
impact and abrasion.
Wear-O-Matic 12 is also recommended for power shovel
and dragline bucket parts, dredge buckets, and
Procedure:
Wear-O-Matic 12 - 7/64" (2.8 mm) diameter wire should
be deposited with the
open arc only, using direct current,
reverse polarity. The recommended amperage range is
175-300 amperes at 30-35
arc volts. A weaving tech- nique
is recommended to develop maximum abrasion
and impact resistance. Application thickness should be
limited to two passes
or 1/4" (6.4 mm). Typical
Mechanical Properties:
The deposit of Wear-O-Matic 12 open-arc wire has good
compressive strength.
It is not machinable and cannot be
forged. Relief checks may occur with this alloy but do
not impair its performance. Weld deposits cannot be cut
with oxy-acetylene torch or by air carbon-arc cutting.
Hardness of Deposited
Metal:
Two layer deposit on 1045 steel—weaving technique—
50 Rockwell C
Abrasion Resistance:
High Impact
Resistance: Excellent
Compressive Strength: Excellent
Typical Undiluted
Weld Metal Analysis (%)
C
Mn
Si
Cr
Mo
2.30
0.30
1.00
17.00
0.80
