Ar プレート鋼
AR plate steel includes a range of wear-resistant grades such as AR400, AR450, AR500, and extended high-hardness grades like AR550 and AR600. These materials are defined by increasing hardness levels, offering progressively higher wear resistance for more demanding working conditions.
- 説明
AR plate steel (Abrasion Resistant steel plate) is a group of quenched and tempered wear-resistant steels designed to withstand sliding abrasion, インパクト, and heavy material wear. 鉱山で広く使用されています, 工事, agriculture, セメント, バルクマテリアルハンドリング産業.
AR grades are mainly defined by ブリネル硬さ (HBW), which directly reflects wear resistance performance. The most common AR plate steel grades include AR400, AR450, and AR500.
AR Series Wear Resistant Steel Grades
| 学年 | 硬度 (HBW) | Wear Resistance Level | 靭性 | Main Characteristics | 代表的な用途 |
|---|---|---|---|---|---|
| AR400 | ~360–440 | 中くらい | 良い | Balanced wear resistance and toughness, easy to process | 建設機械, 鉱山機械, structural wear parts |
| AR450 | ~430–480 | 高い | 中くらい | Improved abrasion resistance with higher hardness | Heavy-duty equipment, ライナー, ダンプトラックの車体 |
| AR500 | ~470–540 | 非常に高い | Medium-low | High hardness for severe abrasion environments | Mining systems, 破砕機, high-wear liners |
Extended AR Grades (Special Applications)
Some manufacturers also produce higher or specialized AR grades:
| 学年 | 硬度 (HBW) | Main Features | 代表的な用途 |
|---|---|---|---|
| AR550 | ~520–600 | 非常に高い耐摩耗性 | Severe mining and crushing environments |
| AR600 | ~570–650 | Maximum hardness level | Extreme abrasion and impact systems |
Performance Characteristics of AR Plate Steel
AR steel is produced through quenching and tempering heat treatment, resulting in a hardened martensitic structure. This provides:
- High surface hardness for abrasion resistance
- Good impact resistance depending on grade
- Stable performance under sliding wear conditions
- Controlled weldability with proper procedures
As hardness increases, 耐摩耗性が向上します, 靭性と成形性はわずかに低下しますが、.
グレード選択の原則
- AR400 → バランスのとれた性能を備えた一般産業用摩耗用途
- AR450 → 中程度から重度の摩耗状態で耐久性が向上
- AR500 → 採掘やバルクハンドリングなどの摩耗の激しい環境
- AR550–AR600 → 極度の摩耗および衝撃の用途
