Ni-hard iron
Definition
Noun: 1. A type of abrasion-resistant cast iron: Ni-hard iron is a specific alloy of cast iron to which nickel (and usually chromium) has been added. This addition significantly increases its hardness and resistance to wear from scraping, grinding, or erosion.
Usage
- Ni-hard iron is primarily used as a material in industrial applications where components are subject to severe abrasive wear.
- It is commonly specified for parts like pump liners, grinding balls, mill liners, and slurry handling equipment.
Examples of Usage
- Noun:
- The slurry pump was lined with ni-hard iron to extend its service life.
- Compared to standard cast iron, ni-hard iron offers superior performance in high-abrasion environments.
Advanced Usage
- The term is often used in engineering, metallurgy, and industrial procurement contexts. It may be specified by material standards (e.g., ASTM A532) which define different classes of ni-hard iron based on composition and hardness.
Variants and Related Words
- Ni-Hard (noun/adjective): A common shortened form used interchangeably with "ni-hard iron."
- The specifications call for a Ni-Hard component.
- Abrasion-resistant cast iron (noun phrase): A broader descriptive term for this category of materials.
- White iron (noun): The microstructural type of cast iron (characterized by its white fracture surface) that ni-hard iron typically belongs to, where alloying elements like nickel promote this hard, wear-resistant structure.
Synonyms
- Nickel-chromium white iron: A more technically precise synonym that names the key alloying elements.
- Abrasion-resistant alloy iron: A descriptive synonym focusing on its property.
Related Phrases/Technical Terms
- Alloyed white cast iron: The general metallurgical classification for this family of materials.
- Wear-resistant material: A functional category that includes ni-hard iron.
Noun
-
cast iron to which nickel has been added to make it resist abrasion
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