Crankshaft Restoration for Stamping Press Machines Using Laser Cladding Technology

In industrial stamping press systems, the crankshaft plays a central role — converting the motor’s rotational motion into the up-and-down linear motion of the punch. This enables the press to perform accurate and continuous stamping operations during production.

Importance of the Crankshaft

The crankshaft endures heavy impact loads, repeating millions of cycles during operation. When it becomes worn, cracked, or deformed, the stamping force becomes unstable, leading to dimensional inaccuracies, vibrations, and even damage to other components in the drive system.
Maintaining the crankshaft’s precision and durability is therefore crucial to ensuring the performance and service life of the stamping machine.

Common Types of Damage

• Worn, scratched, or micro-cracked journal surfaces.
• Increased bearing clearance, causing vibration and reduced punching force.

Laser Cladding Restoration Solution

Laser Cladding is an advanced technology that precisely adds material to worn areas. The new metallic layer is melted and metallurgically bonded to the base shaft surface, forming a coating with high hardness and excellent wear resistance.

Key Advantages

• No heat distortion of the component.
• Strong, dense coating with excellent adhesion.
• Compatible with various materials such as Inconel, Stellite, and alloy steels.
• High coating accuracy, minimizing post-weld grinding work.

Restoration Process

1. Inspect and clean the crankshaft surface.
2. Align and define the cladding zones.
3. Apply laser cladding at the damaged areas.
4. Finish machining — grinding and polishing to achieve exact dimensions.
5. Inspect hardness, concentricity, and coating adhesion before reassembly.

Surface After Laser Cladding Restoration

The restored surface is smooth, uniform, and highly durable, meeting all technical and mechanical requirements.

Result

After restoration, the crankshaft achieves precision and durability equal to or greater than a new part, helping reduce downtime, save maintenance costs, and improve production efficiency.

PHUONG DONG INDUSTRIAL AND TRADING CO., LTD – a pioneer in applying Laser Cladding technology for high-precision mechanical restoration in Vietnam.

PHUONG DONG INDUSTRIAL  AND TRADING CO., LTD
Address: Alley 70, Dan Di, Uy No, Dong Anh, Hanoi
Phone/Zalo/Whatsapp: +84 987 822 360