Spherical Carbide-Containing Alloy in Coil Form for Heavy-Duty Protection Against Abrasion
TeroCote 7888SH ®
BRAZING • Outperforms a "Leading Competitor" by 57% based on results from independent testing • Spherical tungsten carbides have a denser distribution and reinforce the link between carbides in the matrix • Excellent wetting action for smooth and even deposits
DESCRIPTION:
PROCEDURE FOR USE:
Eutectic's TeroCote 7888SH is a composite wire comprising a nickel core and a flexible envelope containing a mixture of spherical tungsten carbide and a nickel-chromium alloy.
Deposition by Oxy/Acetylene flame:
The spherical nature of the carbides increases the wear resistance of the deposits in particular reducing the risks of cracking It has a resistance greater than an equivalent matrix containing non-spherical carbides shocks.
TECHNICAL DATA: Hardness, matrix (HV30): > 400 HV Micro-hardness, carbides (HV1): >2300 HV Carbide granulometry : < 420 μm Max. Service Temperature: ≈ 700°C
THE ASTM G-65 WEAR TEST One of the most commonly used wear tests is the ASTM G-65 Dry Sand Rubber Wheel Test. This test measures weight or volume loss in a very controlled environment, and thus to evaluate the relative abrasion resistance of various materials.
1. Mechanically clean the area to be coated by grinding or grit blasting. 2. Adjust torch for a neutral to slightly oxidizing flame. Apply a general preheat, 400-650°F (204°-343°C), followed by a concentrated local heating of the area to be coated, 900°-1000°F (482°-538°C). 3. Bring the end of the coil into contact with the work piece, at an angle of 35° from the work surface, with the torch nozzle at 60-70° pointing in the direction of travel. 4. As the alloy begins to melt, oscillate the torch nozzle from side to side advancing the flame along the alloy, which should be kept in contact with the work surface. • Maintain a 3/16" gap between the inner flame cone and the work surface. Deposition by TIG process: Procedure is similar to that for the flame process. Maintain a gap of approximately 3/16" between the electrode and the work surface. Use a low amperage setting. *Note: For all processes, allow the work piece to cool slowly.
APPLICATIONS: 7888SH is designed expressly to provide durable protection of large industrial components against wear by abrasion, thereby greatly extending effective service life. Industries where 7888SH can be used: • Mining & Earthmoving • Oil Exploration • Brick/Cement making • Mineral Processing • Iron & Steel • Agriculture
Specific applications such as: • Ripper teeth • Drill Bits, Stabilizers, etc... • Mixer & Scraper blades, Extrusion press Screws • Conveyor Screws, Pump Rotors and Sleeves • Guides & Scraper blades • Cutting edges on Plow shares
YOUR RESOURCE FOR PROTECTION, REPAIR AND JOINING SOLUTIONS Eutectic Corporation N94 W14355 Garwin Mace Drive Menomonee Falls, WI 53051 USA P 800-558-8524 • F 262-255-5542 www.eutectic.com
Eutectic Services 12300 Carmen Avenue Milwaukee, WI 53225 USA P 800-558-8524 • F 262-255-5542
Statement of Liability: Due to variations inherent in specific applications, the technical information contained herein, including any information as to suggested product applications or results, is presented without representation or warranty, expressed or implied. Without limitation, there are no warranties of merchantability or of fitness for a particular purpose. Each process 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 Eutectic Corporation and its affiliates shall have no liability in respect thereof. 7888SH 4-15 © 2008, Eutectic Corporation, ® Reg. T.M., Printed in the U.S.A.