高張力鋼
High strength steel hardfacing plates combine a tough steel substrate with a super-hard chromium carbide overlay.
This engineered structure delivers 例外的な硬度, high load capacity, そして長寿命, making it one of the most effective wear-resistant materials used in heavy industry.
- 説明
High strength steel hardfacing plates, としても知られています welded wear plates または 炭化クロムオーバーレイ (CCO) プレート, are engineered materials designed to operate under 極度の摩耗, impact and heavy load.
They are manufactured by welding a high-alloy wear-resistant layer onto a high-strength steel base plate, creating a composite structure that combines 硬さと靱性.
材料構造
A hardfacing plate consists of two layers:
| 層 | 関数 |
|---|---|
| Wear layer (かぶせる) | Provides extreme abrasion resistance |
| Base steel plate | Provides structural strength and impact resistance |
The wear layer contains large amounts of chromium and carbon, which form 炭化クロム結晶 during welding.
摩耗層の化学組成
| 要素 | 代表的な範囲 |
|---|---|
| 炭素 (C) | 3.0 – 5.5% |
| クロム (Cr) | 18 – 28% |
| マンガン (ん) | 0.5 – 2.0% |
| シリコン (そして) | 0.5 – 2.0% |
| 鉄 (fe) | バランス |
These elements generate a dense network of hard chromium carbides, which gives the plate its extreme wear resistance.
機械的性能
| 財産 | 代表値 |
|---|---|
| Surface hardness | HRC 55 – 65 |
| Microhardness of carbides | Up to HV 1800 |
| 耐摩耗性 | 6–10 times higher than carbon steel |
| Impact resistance | Supplied by base plate |
| Load bearing capacity | 高い |
| 熱安定性 | Up to 400–600°C |
High Strength Base Plate
The substrate is usually high-strength carbon or alloy steel, 提供:
-
高い引張強度
-
Excellent toughness
-
Resistance to cracking
-
Ability to be welded and bolted
This base allows the hard wear layer to survive heavy mechanical stress.
Standard Plate Sizes
Hardfacing wear plates are available in many formats:
| アイテム | 範囲 |
|---|---|
| Standard sheet size | 1500 × 3000 mm |
| 1220 × 2440 mm | |
| Thickness of base plate | 4 – 25 mm |
| Thickness of overlay | 2 – 12 mm |
| Total thickness | 6 – 35 mm |
Plates can be カット, 曲がっています, drilled and welded to match equipment design.
代表的な用途
High strength welded wear plates are used in:
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Mining and quarry equipment
-
セメント工場
-
石炭処理システム
-
発電所
-
製鉄所
-
Bulk material conveyors
These systems require both mechanical strength and extreme wear resistance.
