General Refractory Material Classification
The following chart classifies some of the more common refractory materials into five categories in order of hardness and ease of cutting. Class No. 1 is the hardest, therefore it is the most difficult to cut. While class No. 5 is the softest material and cuts with relative ease.
Acid Proof Brick
|Contains Corundum, hardness is 8.8 Low porosity & permeability|
Processed @ 3500¡F
Resistance to chemical and acids
Highest diamond concentration for cutting the hardest refractory material
Fire Clay Brick (High Fire)
|Alumina + the balance in Silica|
Fired @ several hundred degrees higher than other Fire Clay bricks
Terra's most versatile refractory diamond blade
Highest quality diamonds for cutting a wide range of hard refractory material
Fire Clay Brick
|60% - 70% Alimina & Silica|
35% - 45% Alumina & Silica
70% Mullite Mineral
|RC 650 Pro
Highest quality diamonds matched with superior bonds, combine for fast cutting and long life
|Mixture of Alumina & Silica|
Made of Magnesia, Lime, Chrome & Forsterite. Bonded chemically or fired @ 300¡F
Abrasive-fired between 3000 & 3100¡F
|RC 650 Premium
Professional quality diamond blade designed for fast, smooth cuts and higher production
|5||Carbon Brick Semi-Silica|
|Not less than 72% Silica|
Replacing Medium & Low duty because of greater durability for heat
|RC 650 Premium
Terra's longest lasting blade for soft, abrasive refractory material at lower cost
Warning: Consult the saw manufacturer’s recommended RPM speed for maximum safe surface feet per minute.
Terra Diamond builds all type and sizes of custom blades. Below is a list of some of our standard sizes.
Specifications including diamond types and concentration, segment size and hardness are also involved in determining the specification of a segment. Below are the typical specifications for this blade.
|Ideal for mid-range life, fast cutting
Minimum Diamond Depth: .250"
|Highest concentration - professional quality
Minimum Diamond Depth: .300"
The Matrix is based on several factors including the bonding materials, degrees of hardness and abrasive resistance to name a few. Terra Diamond uses the matrix chart below to help customize to our customer’s needs.
|RC020||Very dense, ceramic materials|
|RC030||Dense, very high alumina|
|LW-2||General purpose, medium alumina|
|RC500||Abrasive low alumina|
|RC500||Very abrasive brick, fire clays|
|*LW2 may be used wet or dry|