What is Ni-Hard material?
What is Ni-Hard material?
Ni-Hard is the generic name for a family of white cast irons alloyed with nickel and chromium to give high hardness and outstanding resistance to abrasion.
Where is Ni-Hard iron used?
Ni-Hard castings are typically used in power generation, brick, asphalt, cement, concrete, rock, sand and gravel industries. Typical castings are mill or mixer liners, mixer tips and slurry pumps.
Can you weld Ni-Hard?
Martensitic cast iron (Ni-Hard types) and the various white irons are generally considered too crack-sensitive or brittle to be welded satisfactorily.
What is the chemical composition of cast iron?
Cast iron is one of the oldest ferrous metals in commercial use. It is primarily composed of iron (Fe), carbon (C) and silicon (Si), but may also contain traces of sulfur (S), manganese (Mn) and phosphorus (P). It has a relatively high carbon content of 2% to 5%.
What is the hardness of nickel?
Nickel: 4. Platinum: 4-4.5. Steel: 4-4.5. Iron: 4.5.
Is there carbon in cast iron?
Cast iron is an alloy with a high carbon content (at least 1.7% and usually 3.0–3.7%), making it relatively resistant to corrosion.
Is nickel stronger than brass?
Brass: 3. Bronze: 3. Nickel: 4. Platinum: 4-4.5.
Is cast iron naturally black?
Cast iron is just iron alloyed with huge amount of carbon and some little amount of silicon. So in a cast iron carbon takes major role so obviously we know that color of carbon is black. So this is why all cast iron products are in black.
What makes steel strong and hard?
Nickel and manganese in steel add to its tensile strength and make the austenite form of the iron-carbon solution more stable, chromium increases hardness and melting temperature, and vanadium also increases hardness while making it less prone to metal fatigue.
What are the uses of Ni hard casting?
Ni-Hard parts and components extend the life of products when compared to other cast iron or mild steel cast components. Ni-Hard castings are typically used in power generation, brick, asphalt, cement, concrete, rock, sand and gravel industries.
What makes up the microstructure of Ni hard?
Ni-Hard has a microstructure consisting of carbides and a martensitic- austenitic-bainitic or predominantly martensitic matrix. This is achieved by a balanced composition of carbon, nickel, chromium, silicon, and final heat treatment. Machining the Ni-Hard 1 casing of a slurry pump
What is the hardness of white cast iron?
Ni-Hard castings are produced with a wear resistant minimum of 550 brinell hardness, hard white cast iron containing 4% Ni and 2% chrome, used for abrasive resistant and wear resistant applications in the following industries: Mining. Earth Handling.
What is the resp of Ni hard nickel?
There are two distinct groups of Ni-Hard compositions: • the medium alloyed Ni- Hard 1 and Ni-Hard 2 with, nominally, 3.3% (resp 2.6%) C, 4% Ni, 2% Cr • Ni-Hard 4 with, nominally, 3% C, 9% Cr, 5% Ni, 2% Si. These three alloys are standardized in almost all industrialized nations under various designations.
