• Good crack resistance and corrosion resistance• High deposition rate reduces time needed to complete jobs • Resists combined abrasion, impact, and compression• Extremely fast deposition rate is ideal for heavy build-ups

TeroMatec OA 4620

Premium Open Arc, Wearfacing Wire; the New Standard for CombatingAbrasion, when Combined with Impact and Compression

®

WIRE

Statement of Liability: Due to variations inherent in specific applications, the technical information contained herein, including any information as to suggested product applications orresults, is presented without representation or warranty, expressed or implied. Without limitation, there are no warranties of merchantability or of fitness for a particular purpose. Eachprocess and application must be fully evaluated by the user in all respects, including suitability, compliance with applicable law and non-infringement of the rights of others, and EutecticCorporation and its affiliates shall have no liability in respect thereof.

YOUR RESOURCE FOR PROTECTION, REPAIR AND JOINING SOLUTIONS

Eutectic CorporationN94 W14355 Garwin Mace DriveMenomonee Falls, WI 53051 USAP 800-558-8524 • F 262-255-5542

Eutectic Canada52 Hymus Blvd. Suite 220Pointe-Claire, QuebecH9R 1C9Phone: (800) 361-9439Fax: (514) 695-8793

Eutectic MexicoKM 36.5 AutopistaMexico-Quertaro54730 Cautitlan-IzcalliEstado de Mexico, MexicoPhone: 011 (52) 55-5872-1111e-mail: eutectic.mexico@eutectic.com.mx

DESCRIPTION:TeroMatec OA 4620 is formulated to have the ultimateresistance to abrasion when combined with impact andcompression. It provides uniform, dense, porosity-free welddeposits. TeroMatec OA 4620 Excellent for use on large sur-faces such as those found in the Cement, Mining, andDredging industries; particularly for use in dredger pumps.It has an extremely fast deposition rate that is especiallyadvantageous to heavy build-ups and offers an estimated 3- 5 times the wear resistance of conventional hardfacingelectrodes.

OA4620DS© 2007, Eutectic Corporation, ® Reg. T.M., Printed in the U.S.A.

TeroMatec OA 4620 Technical Data & Set-up Information• Hardness as-deposited (2-pass): HRC 47 - 52 (depending on dilution)• Power Source Type: Constant voltage and integrated wire drive• Current & Polarity: DC (+) electrode positive

Diameter Amperage [A] Voltage [V] Stick-out [mm] / [in.][mm] / [in.] Range Optimum Range Optimum Range Optimum

1.6 1/16” 150 - 350A 270A 24 - 35V 24V 25 - 50 / 1 - 2” 25 / 1”2.0 5/64” 200 - 400A 300A 26 - 35V 28V 25 - 50 / 1 - 2” 35 / 13/8”2.4 3/32” 250 - 450A 350A 26 - 35V 28V 25 - 50 / 1 - 2” 40 / 15/8”

2.8 7/64” 250 - 450A 400A 28 - 35V 30V 25 - 50 / 1 - 2” 40 / 15/8”

Note: Parameter adjustments will be needed depending on the size, weight, and shape of the part to be welded. For Optimum wear resistance keep to the low end of the amperage & voltage ranges.

WELDING PROCEDURE & TECHNIQUE:

CCaauuttiioonn:: Although a 2-roll wire drive assembly will work,the optimum for maintaining arc voltage stability and con-sistent and smooth wire feeding is a serrated 4-roll driveassembly. Smooth drive rolls are not recommended!

SStteepp 11:: Remove all "old" cracked or spalled weld metal downto a sound base.

SStteepp 22:: TeroMatec OA 4620 is a 3 to 4 pass maximumdepending on the thickness of the deposit, it is often fieldpractice to deposit a base-coat depending on the type ofwear, severity, and the total amount of build-up required.

NNoottee:: When re-building 12-14% Mn steels use TeroMatec OA3205 as a cushion layer, and for other alloy steels, EnDOtecDO*68S is recommended. A 2-pass minimum is advisedwhen less-thick deposits are required.

SStteepp 33:: Preheat the part to be hardfaced depending on itsair hardenabilty potential and/or carbon level. For mostconstructional steels, a nominal preheat of 150°F (approx.65°C) is suggested and for medium alloy steels, ~250°F(approx. 121°C).

NNoottee:: Do not heat high manganese steels such as HadfieldCastings!

SStteepp 44:: After checking that the welding conditions are opti-mal by testing on scrap metal, position the gun head at a70-80° angle and use a "push" technique for downhandwelding. For fully automated welding such as hardfacingcement crusher rolls, the wire should exit at about a 10°lagging angle from top dead center. Using this techniquewill assure a smooth and regular weld deposit profile withthe optimum level of fusion.

NNoottee:: If welding is interrupted and the part being weldedcools to room temperature, make sure to reheat to the orig-inal preheat temperature. For hardenable steels slow cool-ing is advised using silicone blankets, vermiculite, or otherenvironmentally suitable heat-retardant material

SStteepp 55:: For most applications, other than a superficialgrind, finishing is not required. If some level of profiling isneeded, grinding can be used for more precise shaping.

TECHNICAL DATA & SET-UP INFORMATION:

TYPICAL ANTI-WEAR APPLICATIONS & INDUSTRIES:APPLICATIONS INDUSTRY• Dump Truck Bodies - Lips and Adapters Disposal, Quarries• Power Feed Decks Pulp and Paper• Earthmoving Equipment Earthmoving• Bucket Teeth - Bucket Edges - Bucket Inside Quarries, Mining• Dredge Pumps - Impellers Dredging• Conveyor Screws - Pug Mill Paddles - Augers Cement, Power

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