400 ブリネルからロックウェル C
耐摩耗性 400 Brinell steel (~45–47 HRC) is a combination of 高硬度, optimized microstructure, and strategic alloying. Elements like C, Cr, ん, モー, V, and W play critical roles in enhancing hardness and abrasion resistance. NM-series and BW-series wear-resistant plates exemplify this balance, delivering long-lasting performance and durability in demanding industrial applications.
- 説明
400 ブリネル硬度 (HB) is roughly equivalent to 45–47 HRC (Rockwell C), a level commonly used for high-performance wear-resistant steel plates. At this hardness, steel plates combine exceptional abrasion resistance with sufficient toughness, それらを理想的にします 採掘, 工事, and heavy industry applications.
1. How Wear Resistance is Achieved in Wear-Resistant Steel Plates
の wear strength of steel plates is primarily determined by:
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Surface hardness
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を通じて達成 heat treatment, 急冷, and tempering.
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High hardness (400 HB / ~45–47 HRC) reduces material loss during sliding, インパクト, or abrasive contact.
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微細構造
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Fine 超硬分布 or alloying phases in the steel matrix provides resistance to cutting, 引っ掻く, and gouging.
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Homogeneous carbide particles prevent localized wear and prolong service life.
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Layered hardness (for hardfaced plates)
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Wear-resistant plates often have a hard surface layer (Carbide overlay or NM/BW series) over a 強靭なベーススチール.
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The base supports the hard surface under impact loads, avoiding cracks and delamination.
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2. Chemical Components That Increase Wear Strength
Specific elements in the steel composition are crucial for enhancing hardness and wear resistance:
| 要素 | Effect on Wear Strength |
|---|---|
| 炭素 (C) | Forms carbides, 硬度が増す, 耐摩耗性を向上させます |
| クロム (Cr) | Enhances hardenability, forms Cr carbides for wear resistance, improves corrosion resistance |
| マンガン (ん) | Increases toughness, reduces brittleness, helps work-hardening in high-impact applications |
| モリブデン (モー) | Increases toughness at high hardness, improves thermal stability |
| バナジウム (V) | Forms fine carbides, refines grain structure, increases wear resistance |
| Tungsten (W) | Forms ultra-hard carbides, provides excellent abrasion resistance |
3. NM-Series and BW-Series Example
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NM-series: Optimized for abrasive wear, high carbide content ensures long-lasting surface hardness.
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BW-series: Uniform hardness throughout the thickness (～400HB), suitable for heavy-impact and sliding wear conditions.
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Both series utilize Cr, ん, and C alloying to maximize wear resistance while retaining toughness.
4. の応用 400 HB / 45–47 HRC Wear-Resistant Plates
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マイニング: crusher jaws, 研削ライナー, バケットライナー, ホッパー
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工事: ブルドーザーのブレード, excavator edges
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マテリアルハンドリング: コンベアライナー, 滝, スラリーポンプ
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Heavy machinery: impact-resistant surfaces in industrial equipment
