バケット摩耗プレートの溶接

バケット摩耗プレートの溶接

Weld-on bucket wear plates significantly extend equipment life in abrasive environments. Proper cutting, 曲げ, 掘削, 溶接, and installation techniques are crucial to maximize protection and durability.

Using high-quality AR, マンガン, or CCO wear plates, combined with correct fabrication practices, ensures buckets perform reliably in mining, 採石, 工事, およびマテリアルハンドリングアプリケーション.

カテゴリ: NMシリーズ

説明

Weld-on bucket wear plates are abrasion-resistant steel plates designed to protect excavator, loader, and bulldozer buckets from extreme wear, インパクト, そして侵食. By attaching wear plates to high-wear areas of the bucket, operators can extend service life, ダウンタイムを削減する, and improve equipment efficiency.

Proper fabrication, 切断, 溶接, and installation techniques are essential to ensure that the wear plates perform optimally under heavy-duty conditions.

1. Cutting Wear Plates to Size

Before installation, bucket wear plates are cut to match the bucket’s shape and curvature. 一般的な切断方法には次のものがあります。:

切断方法	適切な材料	注意事項
プラズマ切断	AR, ん, Q&T steels	Fast and precise; 滑らかなエッジ
レーザー切断	AR ≤ 450HB	高精度; suitable for thin plates
酸素燃料切断	Thick steel plates	Requires preheating for hard steels
ウォータージェット切断	CCO or carbide overlay	熱影響部なし; preserves surface integrity

Cutting must consider the bucket geometry, bolt/weld hole positions, and any overlap for replacement segments.

2. 曲げ加工

Some sections of the bucket, such as lips, sides, and corners, require bending to fit the bucket profile:

AR and Q&T steels: Bending requires careful control; minimum bending radius recommended to avoid cracking.
マンガン鋼: High ductility allows easier bending without preheating.
CCO plates: Overlay side should face outward; preheating may be required to reduce cracking risk.

Correct bending ensures the wear plates fully cover high-abrasion surfaces and maintain structural integrity.

3. Drilling and Bolt Installation

For bolt-on wear plates, precise drilling is necessary:

Drill holes using carbide-tipped or high-speed steel bits.
Ensure proper spacing for load distribution and easy replacement.
Countersink holes if required for flush mounting.

Bolt-on installation allows sections to be replaced individually, minimizing downtime and reducing maintenance costs.

4. Welding Wear Plates

Welding is the most common method for attaching wear plates permanently to bucket surfaces.

Recommended Welding Practices

予熱: Required for thick plates or high-hardness steel to prevent cracking.
Welding Methods: スマウ (stick), GMAW (MIG/MAG), FCAW (flux-cored), or SAW (submerged arc for large plates).
Filler Material: Match hardness to base plate and wear plate; low-hydrogen electrodes are recommended.
Avoid Welding on Overlay Surface: For CCO or carbide plates, weld only the back steel layer.

Proper welding ensures the wear plate remains securely attached under heavy load and impact conditions.

5. Surface Preparation and Finishing

Remove rust, 油, or scale before welding.
Smooth edges and bevels prevent stress concentration.
溶接後, inspect for cracks or incomplete fusion.
オプション: Paint or coating to prevent corrosion if used in wet or marine environments.