Chromium Carbide Overlay Welding
高温耐性クロム炭化物オーバーレイプレート
CCO ウェアプレート

炭化クロム肉盛溶接

溶接摩耗 溶接摩耗
クラッドウェア クラッドウェア

Chromium carbide overlay welding creates a composite wear-resistant steel by welding a chromium-rich hardfacing layer onto a steel base plate. 制御溶接による, 炭化物形成, and precision cutting, this process produces high-performance wear parts と long service life and superior abrasion resistance for demanding industrial applications.

カテゴリ:

Chromium carbide overlay welding is a hardfacing process used to create extremely wear-resistant steel plates and components. By welding a chromium-rich alloy layer onto a steel base plate, a surface with 高硬度, 耐摩耗性, そして長寿命 is formed.
This technology is widely used in 採掘, セメント, 発電所, 製鉄所, およびバルクマテリアルハンドリングシステム.

Structure of Chromium Carbide Overlay Plate

A chromium carbide overlay plate is a composite welding steel made of two layers:

層 関数
ベース鋼板 構造強度と溶接性を提供します
炭化クロムオーバーレイ Provides extreme wear and abrasion resistance

The overlay contains chromium carbides (Cr₇C₃ and Cr₂₃C₆), which are responsible for its exceptional hardness.

Chromium Carbide Overlay Welding Process

1. ベースプレートの準備

The carbon steel base plate is cleaned to remove:

  • Rust

  • Oil

  • Scale

This ensures strong metallurgical bonding during welding.

2. Hardfacing Alloy Welding

A special chromium carbide welding wire or flux-cored wire 使用されています.
The overlay is deposited by automated welding processes such as:

  • フラックス入りアーク溶接 (FCAW)

  • サブマージアーク溶接 (見た)

  • オープンアーク溶接 (OAW)

These processes allow precise control of alloy composition and layer thickness.

3. Formation of Carbide Microstructure

溶接中:

  • Molten alloy solidifies on the base steel

  • Chromium carbides crystallize inside the overlay layer

  • These hard carbides are embedded in a tough alloy matrix

This creates a surface hardness of HRC 55–65.

4. Stress Relief Crack Pattern

After cooling, a network of 大丈夫, evenly spaced cracks appears in the overlay.
These cracks:

  • Release thermal stress

  • Prevent large structural cracking

  • Do not affect wear resistance

これは designed feature, not a defect.

5. Cutting and Forming

The finished overlay plate is cut using:

  • プラズマ切断

  • レーザー切断

  • Water-jet cutting

It can then be formed into:

  • Wear liners

  • Chute plates

  • Bending segments

  • Pipes and conveyor components

Why Chromium Carbide Overlay Welding Is Used

This welding process provides:

  • 非常に高い耐摩耗性

  • Strong metallurgical bonding

  • Customizable overlay thickness

  • Lower cost than solid wear-resistant alloy steel

  • Easy repair by re-welding

代表的な用途

Chromium carbide overlay plates are used in:

  • 採掘および採石装置

  • セメントプラントのシュートとホッパー

  • 石炭処理システム

  • Power plant ash conveyors

  • Steel mill material handling

これらの環境には以下が含まれます severe sliding abrasion, インパクト, and particle erosion.

溶接摩耗

溶接摩耗

溶接摩耗