Automatic Inner Hole Overlay Welding Circumferential Seam Welding Machine Manufacturer

 

The Inner Hole Overlay Welding Circumferential Seam Welding Machine is an automatic welding system specially designed for internal surface overlay welding and repair applications.

It adopts advanced welding control technology to achieve stable and uniform weld layers inside holes, cylinders, pipes, and mechanical components.

The equipment is widely used for wear-resistant layer welding, dimensional restoration, and surface strengthening of hydraulic cylinders, shafts, rollers, and other industrial parts.

 

 

1. Automatic Inner Hole Welding Process

The machine performs automatic internal welding operations with stable welding speed and accurate torch movement.

It reduces manual operation errors and improves welding consistency for mass production.

 

2. High Precision Circumferential Seam Welding

Equipped with precise rotation control and welding positioning system, the machine ensures uniform weld beads during circumferential seam welding.

Suitable for components requiring high welding accuracy and repeatability.

 

4. Flexible Welding Parameter Adjustment

Operators can adjust:

• Welding current
• Welding speed
• Rotation speed
• Wire feeding speed
• Welding position

 

 

Applicable welding length	Max 1000mm
Applicable welding diameter	50.8-300mm
Pipe type	Hollow
Rotation speed	0.2-2r.p.m
Motor power	0.75KW
Welding torch lifting range	According to the max diameter of workpiece
Diameter of wire	1.2mm-2.4mm
Machine working voltage	380V 3phase 50hz for welding power 220V single phase for main machine

 

 

1. Internal Welding Torch System

The specially designed welding torch can enter deep holes and perform internal surface welding.

Features:

• Adjustable welding angle
• Stable torch positioning
• Suitable for different inner diameters

2.Wire Feeding System

The automatic wire feeder provides continuous welding wire supply and improves welding stability.

3.Rotary machanism

The rotating mechanism is driven by a spindle servo motor and a precision reducer, achieving stepless speed regulation and ensuring stable rotation speed during the welding process. A custom-designed chuck allows the welding torch to directly reach the inner hole of the workpiece, ensuring that the rotation center and welding axis are perfectly concentric.

4.Renderings 

 

1.Hydraulic Cylinder Inner Hole Repair Welding

The machine is widely used for hydraulic cylinder repair and surface strengthening.

Applications include:

• Hydraulic cylinder barrel
• Hydraulic piston cylinder
• Engineering machinery cylinders

 

2.Pipe Internal Overlay Welding 

• Industrial pipes
• Pressure vessels
• Pipeline components

 

3.Shaft and Mechanical Parts Repair

Used for:

• Shaft restoration
• Wear-resistant coating
• Dimension recovery

 

 

Q1: What is an inner hole overlay welding machine?

An inner hole overlay welding machine is an automatic welding system used to deposit protective metal layers on internal surfaces of holes, cylinders, and pipes.

Q2: What materials can be welded?

The machine can weld various materials including alloy steel, and special wear-resistant alloys, ect.

Q3: Can the machine weld hydraulic cylinders?

Yes. It is widely used for hydraulic cylinder inner surface repair, strengthening, and wear-resistant overlay welding.

Q4: Is the welding process automatic?

Yes. The machine adopts PLC control to achieve automatic welding operation with adjustable parameters.

Q5: Can the machine be customized?

Yes. We customize equipment according to workpiece diameter, length, welding method, and production requirements.

 

 

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