MORI MIU 30 COPPER TUBE MILL No 2 (14472)

MORI MODEL MIU-30 TUBE MILL No 2
Stock # 14472

Machine: Cold roll forming machine and tube mill
Model: MIU-30 TYPE TUBE MILL
Manufacturer: Mori Machinery Corporation
Construction year: 2003
Alloy: copper strip UNS C12200
Final material: welded inner grooved copper tubes for refrigeration
and air-conditioned industry
Type of welder: HF – high frequency

The machine is assembled but is not running since 2013.

1. Main specification
Width of entrance strip: 20 – 55 mm (0.787" - 2.165")
Strip thickness: 0.30 – 0.80 mm
Straightness of the entrance strip: 1/1000 mm
Strip width tolerance: ± 0.04 mm
Strip thickness tolerance: ± 0.01 mm ID for uncolier: 450 mm
OD for uncoiler: <= 1500 mm
Weight for uncoiler: <= 450 kg
Final dimension of tubes: Ø 6.35 mm ~ Ø 15.87 mm. (1/4" - 5/8")
Tubes tolerance: ± 0.04 mm
Working speed: max. 200 m/min.

2. Key Components and Functions
Grooving Process Steps

Copper Strip: The process begins with a flat copper strip,
which is cleaned and prepared for forming and grooving.

Forming Section: Roll Forming: Copper strips are fed into
the machine and passed through a series of roll forming stands.
These rolls gradually shape the flat strip into a tubular form.

Grooving: Before the tube is fully closed, the inner surface
is grooved using specialized tools. These grooves enhance the
heat transfer properties of the tube, making it ideal for
applications like air conditioning and refrigeration. The
grooves can be of various patterns and depths, depending
on the specific application requirements. Common patterns
include helical and straight grooves.

High-Frequency Welding Section: Induction Coil: The formed
tube, with a longitudinal seam, passes through an induction
coil. High-frequency current is induced in the edges of the
strip, heating them to the welding temperature.

Squeeze Rolls: Immediately after heating, the tube
passes through squeeze rolls that press the heated edges
together, forming a strong weld. The high-frequency welding
process ensures a clean, precise weld with minimal heat-affected zone.

Cooling and Sizing Section: The welded tube is rapidly
cooled to solidify the weld and maintain the tube’s
structural integrity.

Sizing Rolls: The tube then passes through sizing rolls
that ensure it meets the precise diameter and roundness specifications.

Cutting and Finishing: The continuous tube is cut to the desired
lengths using a flying saw or a similar cutting mechanism.

Finishing: The cut tubes undergo finishing processes such as
deburring and inspection to ensure they meet quality standards.

3. Advantages of High-Frequency Welding
Efficiency: High-frequency welding is highly efficient, allowing
for rapid production speeds.
Quality: Produces strong, consistent welds with minimal defects.
Precision: The process is highly controllable, ensuring precise
dimensions and high-quality grooves.

4. Components
Uncoiler
Shear & Welder
Dancer Roll
Spiral Looper
Dancer Roll and Embossing Stand
Forming Section
Welder
Sizing Section
Rotary Press Cutter
Run-Out Table
Water & Emulsion tank

**Temporary Specifications Subject to Revisions**
**PRICE QUOTED AS IS WHERE IS SUBJECT TO PRIOR SALE**
**ALL SPECIFICATIONS ARE SUBJECT TO BUYERS VERIFICATION**