Tấm thép mạ

Tấm thép mạ: Manufacturing and Processing Technology of Weld Overlay Wear Plate

Clad steel plate (also called weld overlay plate or hardfaced wear plate) is a composite material produced by depositing a wear-resistant alloy layer onto a steel base plate. Its performance depends not only on material composition but also on a precise and controlled manufacturing process.

Compared with ordinary steel plate production, clad steel plate requires multiple metallurgical and welding steps to achieve a stable wear-resistant surface.

1. Raw Material Preparation

Vật liệu	Chức năng
Tấm thép cơ bản	Provides strength and structural support
Welding alloy wire/powder	Forms wear-resistant overlay layer
Flux or shielding gas	Protects weld quality during deposition

2. Surface Cleaning and Pre-Treatment

Trước khi hàn, the base plate must be thoroughly cleaned:

• Remove oil, rỉ sét, and surface impurities
• Ensure clean bonding surface
• Improve metallurgical fusion quality

Proper pre-treatment is essential to avoid delamination and defects.

3. Preheating Process

The base plate is often preheated before overlay welding:

• Giảm căng thẳng nhiệt
• Prevents cracking in hardfacing layer
• Cải thiện sức mạnh liên kết

Preheating temperature depends on steel grade and overlay system.

4. Quá trình hàn lớp phủ

This is the core manufacturing step of clad steel plate.

Process Type	Đặc trưng
Hàn hồ quang mở	Common, tiết kiệm chi phí, high deposition rate
Hàn hồ quang chìm (CÁI CƯA)	Stable quality, suitable for large plates
PTA (Plasma transferred arc)	Độ chính xác cao, excellent carbide control
Tấm ốp laze	High-end process, độ pha loãng thấp, hiệu suất cao

The wear-resistant layer is built by multiple welding passes to reach the required thickness.

5. Multi-Layer Deposition Control

• Each layer must be precisely controlled in thickness
• Cooling is required between passes
• Carbide distribution must remain uniform

This step determines final hardness and wear resistance.

6. Cooling and Stress Relief

Sau khi hàn, controlled cooling is required:

• Prevents thermal deformation
• Reduces internal residual stress
• Improves structural stability

7. Straightening and Finishing

Because welding introduces deformation, finishing processes are required:

• Mechanical straightening
• Surface grinding (nếu được yêu cầu)
• Dimensional correction

8. Cutting and Fabrication

Clad steel plates are often processed into final shapes:

• Cắt plasma
• Waterjet cutting (preferred for precision)
• Cắt laze (thin plates)

Special care is needed due to the high hardness of the overlay layer.

9. Quality Inspection

Test Item	Mục đích
Hardness test	Verify wear resistance level
Bonding strength test	Ensure metallurgical fusion quality
Thickness measurement	Check overlay uniformity
Surface inspection	Detect cracks or defects

10. Teda Ganghua Clad Steel Plate Manufacturing Capability

Là nhà cung cấp thép chịu mài mòn chuyên nghiệp, Teda Ganghua produces high-quality clad steel plates using controlled welding processes, stable alloy systems, and strict quality inspection standards.

We provide customized wear solutions including cutting, chế tạo, and engineered wear protection for mining, xi măng, thép, và các ngành công nghiệp điện.

Khám phá các sản phẩm thép chịu mài mòn của chúng tôi tại đây:
Tấm lớp phủ crom cacbua

Phần kết luận

The manufacturing of clad steel plate involves multiple precise steps including surface preparation, làm nóng trước, multi-layer welding, cooling control, finishing, and inspection. This complex process ensures high hardness, liên kết mạnh mẽ, and long service life in industrial wear applications.