Cco ウェアプレート
CCO Wear Plate is called a weld overlay plate because its wear-resistant surface is created by welding a hard alloy layer onto a steel base plate. This manufacturing process, known as hardfacing, forms a strong metallurgical bond and produces a high-chromium carbide surface layer.
- 説明
CCO ウェアプレート (炭化クロムオーバーレイ摩耗プレート) is a highly wear-resistant steel product widely used in mining, セメント, 発電所, and heavy industrial equipment. It is commonly called a “weld overlay plate” or “hardfacing wear plate” because its surface is formed by a welding deposition process rather than rolling or casting.
The name directly reflects its manufacturing method and structure.
Why It Is Called a Weld Overlay Plate
The term “weld overlay” comes from the way the wear-resistant layer is created.
Unlike traditional steel plates that are produced by rolling, CCO wear plate is made by:
- Depositing a hard alloy layer onto a steel base
- Using welding technology to fuse the materials
- Creating a metallurgical bond between layers
This “overlay” layer is what gives the plate its extreme wear resistance.
So, it is called a weld overlay plate because the surface is literally “welded on” rather than formed as a single solid piece.
Manufacturing Process of CCO Wear Plate
The production of CCO wear plate involves several controlled steps to ensure strong bonding and high wear resistance.
1. ベースプレートの準備
A mild steel or low-carbon steel plate is selected as the base material.
Functions of base plate:
- 構造強度を提供します
- Absorbs impact loads
- Supports machining and installation
The surface is cleaned to remove oil, さび, and impurities before welding.
2. 硬化肉盛溶接プロセス
The core step is the deposition of a wear-resistant alloy layer.
一般的な溶接方法には次のものがあります。:
- オープンアーク溶接
- サブマージアーク溶接
- フラックス入りアーク溶接
During this process, a high-chromium alloy wire or powder is melted and deposited onto the base plate.
3. Formation of Carbide Overlay Layer
As the molten alloy cools, it forms a hard microstructure:
- Chromium carbide particles (extremely hard phase)
- Iron-based metallic matrix
- 母材鋼との強力な冶金的結合
This structure provides excellent wear resistance.
4. Multi-Layer Deposition (if required)
For higher wear resistance, multiple welding layers may be applied:
- First layer: bonding and transition layer
- Second layer: main wear-resistant layer
- Additional layers: enhanced hardness and thickness
5. 冷却と仕上げ
溶接後, the plate is cooled and processed:
- Stress relief and stabilization
- 表面の亀裂や欠陥の検査
- 矯正と水平出し
- 必要なサイズにカットする
Key Features of the Manufacturing Process
The weld overlay process gives CCO wear plate several advantages:
- 層間の強力な冶金的結合
- Extremely hard wear-resistant surface
- Tough and impact-resistant base support
- Adjustable thickness of overlay layer
- Suitable for extreme abrasion environments
