1-800-837-3789

sales@StLawrenceSteel.com

SLS® Cast Wear Blocks & BUttons (Chocky Blocks)

SLS® BIMETALLIC WEAR PARTS

SLS Bimetallic Wear Parts combine a number of metallurgical properties into one unique wear resistant material which today has been widely used in most abrasive wear applications.

Bimetallic Wear Parts are produced by metallurgically bonding a (cast) highly alloyed chromium molybdenum white iron to a mild steel backing plate. The bonding process yields a high shear strength wear solution. The hardness (700 BHN) of the alloy provides maximum abrasion resistance, while the steel backing plate acts as a means of absorbing high impacts and allows easy fitting and use.

Advantages

  • Easy fitting
  • Size Variety
  • High Abrasion Resistance
  • Impact Resistant
  • Ease of Installation
  • No Pre/Post Heating When Welding
  • Versatile
  • 700 BHN
Cast Wear Blocks

Approximate Sizes (Blocks)

  Approx. Size (L x W) Thickness (H)  
Part Number mm in. mm in. Weight
SLS CB25 240 x 25 9 7/16″ x 1″ 25 1″ 2.4 lb
SLS CB40 240 x 40 9 7/16″ x 1 1/2″ 25 1″ 3.7 lb
SLS CB50 240 x 50 9 7/16″ x 2″ 25 1″ 4.8 lb
SLS CB65 240 x 65 9 7/16″ x 2 1/2″ 25 1″ 6.2 lb
SLS CB90 240 x 90 9 7/16″ x 3 1/2″ 25 1″ 9.2 lb
SLS CB100 240 x 100 9 7/16″ x 4″ 25 1″ 9.7 lb
SLS CB130 240 x 130 9 7/16″ x 5 1/8″ 25 1″ 12.3 lb

Approximate Sizes (Buttons)

Part Number Diameter (D) Base Thickness Total Thickness (H) Weight
SLS WB60 2 3/8″ 7/16″ 1 3/16″ 1.5 lb
SLS WB75 3″ 7/16″ 1 3/16″ 2.2 lb
SLS WB90 3 1/2″ 7/16″ 1 3/16″ 3.3 lb
SLS WB115 4 1/2″ 1/2″ 1 1/4″ 5.7 lb
SLS WB150 6″ 5/8″ 1 5/8″ 12.5 lb

Length & Width (top view)

St. Lawrence Steel Cast Wear Blocks

Thickness (side view)

St. Lawrence Steel Cast Wear Blocks

Diameter & Thickness

St. Lawrence Steel Cast Wear Blocks

INSTALLING ON CURVED SURFACES

1) Clean the surface that block will be welded to.

2) For outside curves: Tack weld one end of the bar to surface in at least three places using a minimum of 1/2″ of weld in each deposit (shown below). Hammer down unwelded end of the bar to form the bar to the curved surface. Stitch weld until bar is firmly in place.

Outside Curve Example

Cast Wear Blocks installed on curved surface

3) For inside curves: Tack weld one end of the bar to surface using a minimum of 1/2″ of weld in each deposit (shown below). Starting from the center, hammer down the bar to form the bar to the curved surface. Stitch weld until bar is firmly in place.

Inside Curve Example

Inside Curve

WELDING

1) Ensure the surface that the wear block is to be welded to is as clea n and flat as possible.

2) Tack weld the wear blocks into position.

3) Stitch weld in 2″ length runs, alternating ends or similiar to minimize heat imput. Do not deposit weld within 1/8″ from the bond zone between the white iron and mild steel backing plate.

Welding Cast Wear Blocks

CUTTING

1) Clamp bar down securely.

2) Cut through base to white iron bond area.

3) Wrap bar with a cloth and carefully hit it with a hammer. Bar should break cleanly at the notch.

Cutting Wear Blocks
Top