Tube Dia

55 millimeters

Max. Wall Thickness

0.8 millimeters


MORI MODEL MIU-30 TUBE MILL #1Stock # 14473Machine: Cold roll forming machine and tube millModel: MIU-30 TYPE TUBE MILLManufacturer: Mori Machinery CorporationConstruction year: 1999Alloy: copper strip UNS C12200Final material: welded inner grooved copper tubes for refrigeration                and air-conditioned industryType of welder: HF – high frequencyThe machine is assembled but is not running since 2013.Some electrical parts are missing according to the attached list.1.    Main specificationWidth of entrance strip: 20 – 55 mm (0.787" - 2.165")Strip thickness: 0.30 – 0.80 mmStraightness of the entrance strip: 1/1000 mm Strip width tolerance: ± 0.04 mmStrip thickness tolerance: ± 0.01 mm ID for uncolier: 450 mmOD for uncoiler: <= 1500 mmWeight for uncoiler: <= 450 kgFinal dimension of tubes: Ø 6.35 mm ~ Ø 15.87 mm. Tubes tolerance: ± 0.04 mmWorking speed: max. 200 m/min.2.    Key Components and Functions Grooving Process StepsCopper 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’sstructural 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 WeldingEfficiency: 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 UncoilerShear & WelderDancer RollSpiral LooperDancer Roll and Embossing StandForming SectionWelderSizing SectionRotary Press CutterRun-Out TableWater & Emulsion tank6. Missing electrical partsQTY      Description                  Tag      Installation1          Drive Mitsubishi           SEV3     EMBOSS UP/DOWN WS 1          Drive Mitsubishi           SEV4     EMBOSS UP/DOWN DS  2          Rectifier Bridge 200A                 Drives Supply1          Drive Sumitomo           INV1     Uncoiler1          Drive Sumitomo           INV4     Exit Pinch Roll1          Drive Sumitomo           INV7     Emboss Top Roll #21          Drive Sumitomo           INV8     Emboss Bottom Roll #21          Drive Sumitomo           INV12   Sizing #31          Drive Sumitiomo          INV14   Sizing #51          HMI                              OPV1    Interface w/Sumitomo PLC3         Power Supply Omega                 Welding Power Module            15AV / 2AV1         Welding Power Module              Negative Power Module**Temporary Specifications Subject to Revisions****PRICE QUOTED AS IS WHERE IS SUBJECT TO PRIOR SALE****ALL SPECIFICATIONS ARE SUBJECT TO BUYERS VERIFICATION**

This machine is listed for sale by Machinery International Corp located in Woodbridge, Connecticut