HF Welded Tube Mill Making Machine

HF Welded Tube Mill Making Machine

HF (High-Frequency) Welded Tube Mill Making Machine is a specialized piece of industrial equipment designed to manufacture metal tubes and pipes with high precision and efficiency. Using high-frequency induction welding, the machine forms metal sheets or strips into tubes, then welds the seams without the need for filler materials. This technology is widely used in industries such as construction, automotive, oil and gas, and other manufacturing sectors where pipes and tubes are essential.

What is a HF Welded Tube Mill Making Machine?

An HF Welded Tube Mill is a continuous production machine designed to produce round, square, and rectangular metal tubes and pipes from materials like steel, stainless steel, aluminum, and copper. The machine forms flat metal strips into tubular shapes and welds the edges using high-frequency electric currents. This method creates a strong and reliable seam while maintaining the integrity of the material.

How HF Welding Works in Tube Mills

The high-frequency welding process used in tube mills is a highly efficient method for joining metal. It works by passing an electric current at a frequency between 100 to 800 kHz through the edges of the metal, heating them to the point where they can be joined under pressure. As the tube is formed, the edges are brought together and welded as they pass through the induction coil.

The key components in the welding process include:

Induction Coil: The coil generates the high-frequency current that heats the edges of the tube.

Pressure Rollers: These are used to apply pressure and force the heated edges together, creating a strong weld.

Cooling System: The welded tube is cooled immediately after welding to solidify the seam and prevent defects.

Main Components of a HF Welded Tube Mill Machine

A typical HF welded tube mill consists of several main components, each contributing to the formation and welding of the tube:

1. Uncoiler

Function: Holds and feeds the metal strip (usually from a coil) into the mill.

Key Features: Sturdy design to handle large coils, with adjustable tension for smooth feeding.

2. Strip Accumulator

Function: Stores extra metal strips to ensure continuous operation of the mill, even during coil changes.

Key Features: Ensures a constant supply of material without stopping the line for reloading.

3. Forming Section

Function: The metal strip is gradually bent into a circular shape as it moves through the mill.

Key Features: A series of rolls or stands that incrementally bend the strip, forming the round tube shape.

4. High-Frequency Welder

Function: Generates high-frequency current to heat the edges of the strip, which are then welded together to form the tube.

Key Features: Uses either an induction or contact welder to create a precise and strong weld seam.

5. Sizing Section

Function: Adjusts the final dimensions of the tube (diameter, shape) and ensures uniformity.

Key Features: Rollers that fine-tune the tube’s shape to meet the specified dimensions for round, square, or rectangular tubes.

6. Cut-Off Unit

Function: Cuts the tube to the desired length after welding and sizing.

Key Features: Uses either a flying saw or rotary blade to cut the moving tube without stopping production.

7. Control System

Function: Monitors and controls the speed, power, and overall operation of the machine.

Key Features: Advanced computerized control systems ensure precision, efficiency, and minimal wastage.

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HF Welded Tube Mill Making Machine

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