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Dynalloy

NON-MAGNETIC

Hardbanding, as a method for protecting drill pipe tool joints from premature abrasive wear, has been in wide spread use since the late 1930’s. Tungsten Carbide has traditionally been embedded into the overlay to further extend tool joint wear life. In open-hole conditions where casing wear is not a concern, Tungsten Carbide embedded in a tough, wear resistant matrix still provides the maximum wear resistance for tool joints.

POSTALLOY© ULTRABAND&#0153 NM

Ultraband™NM is a hard, 100% crack free Hardband designed for non-mag drill collars and related components. Control of critical elements has resulted in a hardband alloy that meets magnetic permeability specifications and offers substantially improved wear resistance compared to conventional non-mag welding alloys, like 310 stainless – a 400% to 500% improvement. In addition, the abrasion resistance of Ultraband™NM is 400% to 500% better than drill collar base materials.

NON-MAGNETIC 310

The weld deposit is fully austenitic and calls for low-heat during welding.

NON-MAGNETIC 316L

Non-magnetic 316L has the same analysis as ER316, except that the carbon content is limited to a maximum of 0.03% in order to reduce the possibility of formation of intergranular carbide precipitation. This low carbon alloy is not as strong at elevated temperatures as ER316H.

Application

For oil and gas industry applications such as non – magnetic drill collars, stabilizers and MWD/LWD drilling tools and related components – optimized for improved wear resistance.

Ultraband™NM can be applied directly on to non-mag tools and over previous layers of 310 stainless. Used by itself, Ultraband™NM provides excellent wear resistance. For additional wear protection. a non-magnetic “cast tungsten carbide” may be dropped into the weld. Recommended size is 20-30 or 30-40 mesh at a drop rate of approximately 40 grams per minute. Deposits are smooth and free of any slag. Re-application is easy providing the worn deposit is clean and free of defects. Please contact our Engineering Department for complete procedures.

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DYNACARB

Crushed tungsten carbide for your hardfacing applications

TUNGSTEN CARBIDE PELLETS

Dynalloy Tungsten Carbide Pellets increase the wear life of your hardfacing deposits. They are spherical in shape and have no thin edges or points to wear away which makes their application in the drilling industry "casing friendly."

Specification

RECOMMENDED WELDING PARAMETERS:

Diameter 1/16” (1.6mm)
Polarity Electrode Positive
Voltage 30(28 to 32)
Current 240(230 – 290)
Shielding Gas 98% Argon/2% Oxygen
Flow 35 CFH(32 to 37)
Stick-Out .75” – 1”
Offset .1”
Preheat Room Temp. – 100F min. required
Interpass 400F Max.
Post Welding Slow Cool to Room Temp

PACKAGING

25 lb. Spools are the standard packaging for Ultraband NM. Other packaging available upon request. Please call for more information.

Download spec sheet

Application

Non-magnetic 310 is used for welding of stainless steels of similar composition in wrought or cast form. This filler metal can also be used for dissimilar welding.

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DYNACARB

Crushed tungsten carbide for your hardfacing applications

TUNGSTEN CARBIDE PELLETS

Dynalloy Tungsten Carbide Pellets increase the wear life of your hardfacing deposits. They are spherical in shape and have no thin edges or points to wear away which makes their application in the drilling industry "casing friendly."

Specification

MECHANICAL PROPERTIES

Tensile Strength (psi) 89,500 PSI/620 MPA
Yield Strength (psi) 60,500 PSI/420 MPA
Elongation % 34%

WELDING PARAMETERS

MIG Welding Direct Current; Electrode +Ve

Shield Gas 98/99% Argon + 2/1% Oxygen
97% Argon + 3% CO2
Gas Flow 30 to 50 CFH
Voltage 29 to 33
Amperage 160/180 for .035” (0.9mm)
180/220 for .045” (1.14mm)
210/250 for .062” (1.6mm)

T.I.G. WeldingM Direct Current; Electrode -Ve

Shield Gas 100% Argon
Gas Flow 30 to 40 CFH

Sub-Arc Welding Direct Current; Electrode +Ve

Voltage 29 to 32
Amperage 300 to 350 for 3/32” (2.5 mm)
400 to 550 for 1/8” (3.14 mm)
500 to 650 for 5/32” (4.0 mm)
Speed of Welding 20 to 30 IPM (500 to 750 mm)/min.

nominal composition

C……………0.06-0.15 Fe……………..Balance
Si……0.45-0.75 max. Mn…………0.90-1.40
Ni…………..0.15 max. P………….0.025 max.
Mo…………0.15 max. V……………0.30 max.
Co………….0.50 max. Others…….0.50 max.
S………….0.035 max.
Cr……………0.15max.

PACKAGING

MIG Wire – 30# Spools; TIG Wire – 10# Tubes; SAW – 60# Coils

Download spec sheet

Application

This filler metal is primarily used for welding low carbon molybdenum-bearing austenitic alloys.

YOU MIGHT ALSO NEED...

DYNACARB

Crushed tungsten carbide for your hardfacing applications

TUNGSTEN CARBIDE PELLETS

Dynalloy Tungsten Carbide Pellets increase the wear life of your hardfacing deposits. They are spherical in shape and have no thin edges or points to wear away which makes their application in the drilling industry "casing friendly."

Specification

WELDING PARAMETERS

MIG Welding Direct Current; Electrode +Ve

Shield Gas 98.99% Argon + 2/1% Oxygen
97% Argon + 3% CO2
Gas Flow 20 to 50 CFH
Voltage 29 to 33
Amperage 160/180 for .035” (0.9mm)
180/220 for .045” (1.14mm)
210/250 for .062” (1.6mm)

T.I.G. Welding Direct Current; Electrode -Ve

Shield Gas 100% Argon
Gas Flow 30 to 40 CFH

Sub-Arc Welding Direct Current; Electrode +Ve

Volatage 29 to 32
Amperage 300 to 350 for 3/32” (2.5 mm)
400 to 550 for 1/8” (3.14 mm)
500 to 650 for 5/32” (4.0 mm)
Speed of Welding 20 to 30 IPM (500 to 750 mm)/min.

Chemical composition

C…………………..0.016 P………………….0.019
Mn…………………..1.87 N……………………0.05
Si…………………….0.48 Fe…………….Balance
Cr………………….19.32
Ni……………………13.2
MO………………….2.25
S…………………….0.01

PACKAGING

MIG WIRE – 30# Spools; TIG Wire – 10# Tubes; SAW – 60# coils

Download spec sheet

CONTACT US

(936) 825-2532
email us