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Duroxite Cr-Zero Wire

Duroxite Cr-Zero Wire

Duroxite® Cr-zero WIRE is a non-chromium bearing flux cored hardfacing wire for open arc welding.

 

 

 

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The deposited overlay contains boron carbides which has wear resistance and hardness equal to or greater than conventional chromium carbide deposits. Duroxite® Cr-zero WIRE is a specifically formulated to eliminate chromium in the wire, but still provides outstanding wear resistance. Since there are no chromium alloys added in the welding wire, the emission of hexavalent of chromium during welding is reduced or completely eliminated (depending on the chromium content in substrate materials or pre-existing weld deposit). Duroxite® Cr-zero WIRE is a good choice of hardfacing wire for earthmoving applications when the hexavalent chromium smoke is a big concern at workshop. It is suitable for single and double-layer deposit maximum.

 

Key Benefits

• Duroxite® Cr-zero WIRE provides very good abrasion resistance for earthmoving applications where hexavalent chromium in welding fumes cannot be reduced by work practice controls.
• Duroxite® Cr-zero WIRE maintain same wear resistance guaranteed from surface through 75% depth of overlay in multi-layer deposit.

 

Typical Applications

Duroxite® Cr-zero WIRE is used for hardfacing components undergoing wear by earth, sand and abrasives in the agricultural, quarry, mining, and public works fields. Examples: Mixer shafts, impellers, buckets, shovels, transport screws, and crushers for the concrete industry.

Duroxite® CR Zero Wire

Duroxite® CR Zero Wire

Standard Diameter

Metric

Imperial

Metric

1.6 mm 2.8 mm

Imperial

1/16’’ 7/64’’

Typical all-weld metal metal analysis (Weight %)

C

Mn

Si

Ni

B

Fe

0.6 2.3 1.5 2.4 4.0 Balance

 

 

Typical all-weld metal surface hardness1)

Hardness: 3-layer deposit on mild steel: 65 to 69 HRC

1)Surface hardness is measured on machined flat surface just below overlay surface.

 

 

Wear Properties

 ASTM G65 – Procedure A weight loss 2)

Surface

75% depth of overlay3)

Multiple passes 0.18 g maximum 0.18 g maximum

2)ASTM G65 is a standard test measuring sliding abrasion resistance using a dry sand/rubber wheel apparatus. ASTM G65-Procedure A is the most severe test method.
3)ASTM G65 wear test is conducted at 75% depth of the overlay materials to ensure consistently good wear resistance from the top surface through to the depth of 75% of the overlay.

Welding conditions

Current type

Shielding gas

Welding positions

DCEP (Direct current electrode positive) None (Self-shielded) Flat, half up, half down

 

 

Welding parameters recommendations

Diameter

Amperage (A)

Voltage (V)

Stick-out

Range

Optimum

Metric

Imperial

Range

Optimum

Range

Optimum

Metric

Imperial

Metric

Imperial

1.6 mm 1/16’’ 225–300 270 20–26 23 15.9 mm–25.0 mm 5/8’’–1’’ 20 mm 3/4’’
2.8 mm 7/64’’’ 290–310 300 29–31 30 15.9 mm–25.0 mm 5/8’’–1’’ 20 mm 3/4’’

 

Recovery: 95%

Standard package

Diameter

Weight

Type

Metric

Imperial

Metric

Imperial

Spool 1.6 mm 1/16’’ 15 kg 33 lbs
Spool 2.8 mm 7/64’’ 25 kg 55 lbs

The welded overlay components can be processed by welding, cutting, forming and machining. Specific recommendations can be found in the Duroxite® Product brochure or by consulting your local technical support representative.