If a house were built with roof and wall, screws are essential pieces. For metal processing industries, auxiliary equipments are as unnoticed but a must as the screws to the house.

The commonly required auxiliary equipments for metal processing are like de-coilers, curving machine, slitting and cut to length machine, metal embossing machine, metal sheet bending and shearing equipment and so on. There are different metal fabrication processes required for different industries. For example, to a roll former, a de-coiler is necessary to ensure continuous roll forming from steel coils. In steel structural industry, slitting and cut-to-length machine plays an unreplaceable role. For some decoration projects, metal embossing machine can easily take the case. MTC mainly builds roll forming machines and sandwich panel machine lines related equipment, which include hydraulic decoilers, slitting and cut to length machine lines, metal embossing machines, auto stackers, and hydraulic crimping curved machines.

metal embossing  machine line
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METAL EMBOSSING MACHINE LINE

A metal sheet embossing is a stamping process to produce various patterns of raised or sunken designs or relief in sheet metal continuously from unrolling or uncoiling, embossing and recoiling. The sheet in roll or a strip of metal is fed into a pair of roll (male/female roller dies) on a sheet metal embosser to get desired pattern or design engraved or embossed on the surface of the metal sheet.


An individual metal sheet embosser produce the patterns on each every fed piece of metal sheet, while the whole metal embossing line can produce desired patterns continuously on the rolled steel and after the embossing process, the embossed metal sheet will be re-rolled or re-coiled for other purposes. Usually different patterns can be acquired by changing the embossing rollers.


The MTC designed embossing machine is technically capable to make customized patterns on sheets of less than 3mm thickness and 1250mm width.with thickness up to 3mm thickness and width up to 1500mm. The metal materials a metal sheet embossing machine line usually handles with are galvanized steel, pre-painted steel, aluminum and stainless steel etc.


Our sheet metal embosser have fixed bottom roll and adjustable up roll for feeding materials of different thickness. Depends on different purposes, there are two options for customers: an individual Sheet Metal Embosser OR a continuous Metal Sheet Embossing Line.


An individual sheet metal embossing machine consists of two embossing rollers, the driving motor, machine frame and control system; and the whole embossing line consists of a  decoiler (most of time Hydraulic Decoiler), a sheet metal embosser, a recoiler (the same as decoiler), and control system.

slitting machine

SLITTING AND CUT TO LENGTH LINE

If you are looking for a suitable coil process equipment, such as Slitting Line, Cut To Length Line, or just a new leveler for your existing slitter, MTC is ready to provide a one-stop solution. Apart from roll formers and sandwich panel production lines, the compamy is also an expert for designing and building slitting lines and cut to length machine lines as well as related parts.


MTC provides full technical integration for the complete line equipment, from the begining de-coilers, Entry Equipments, Leveler Machines, Mechanical Shears, Slitters, to the end Rewinders.


A steel mill usually produces only wide steel coils, and steel or metal fabricators always use slitting line and cut to length line to make steel strips with different widths in coil and metal sheets with fixed lengths. Sometimes, a slitting line can containe a cut to length machine to get short steel strips. However, long pieces of sheets would require a separate cut to length line.

Slitting Machine Line

steel slitter

A metal slitting machine line has been designed to cut longitudinally the wide steel coils (usually less than 1250mm width and thickness less than 3mm) into different narrow steel strips for producing continuously cold formed sectional steel products, like light gauge steel frames, c/z steel purlins and highway guard rails etc. There are high-speed and normal-speed slitting machine line. High-speed slitter can works at max speed over 100m/minute and over 10 strips can be produced, and price also indicates it’s a high-speed line; while a normal-speed slitting machine can work at most 40m/min with less than 7 strips slit.A slitting machine line usually consists of an electrical decoiler (a hydraulic decoiler is usually equipped if the weight of coils is over 8 TONS), a tensioner, a wasting wires rewinder, a slitting tools with knives mounted,a pinching device, a separator, a recoiler with coil car and an electric control cabinet.

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Cut to Length Machine Line

cut to length line

Contrary to a slitting machine line, a cut to length line cuts metal sheets or coils transversally ( mostly less than 1250mm width and less than 3mm thickness) into required quantites of metal sheets with requested fixed lengths. There is no re-coiler needed but an auto stacker or stacking machine is always placed at the end of the line.The metal sheet cut to length line produced by MTC doesn’t work continuously as a slitting line does because the whole line has to stop when it cuts every single pieces of sheet as per required length, and the whole production or all the operations are done totally automatically under a PLC control system with encoder to measure the length and calculate the quantities. Sometimes slitting machine line and cut to length line work individually and in some cases a slitting machine line has a cut to length machine to cut the sheets after the required quantities of steel strips are slit.

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HYDRAULIC DECOILER

A decoiler has different names, such as decoiler, uncoiler, unrolling device and so on, and it is used to unroll the steel coils for most metal fabrication industries, like metal roll forming, sandwich panel production, steel slitting and cut to length etc. Occassionally a decoiler works as a recoiler, for example, in a metal embossing line, or a slitting line and so on.


According to driving methods, there are manual decoiler with no power, electrical decoiler with electric motor and hydraulic de-coiler with electric motor and hydraulic oil pump. Normally, we provide manual decoiler as a standard decoiler, however, we may suggest a hydraulic decoiler for some special application.


Based on capacities, MTC provides 5TON hydraulic uncoiler, 8TON hydraulic decoiler 10TON hydraulic decoiler, 12TON hydraulic decoiler and 15TON hydraulic decoiler. Usually there is a coil car equiped for hydraulic decoiler over 5TON capacity. The extra cars can move horizontally and also lift up and down to transport and get the coils inserted in the center by the arm of the hydraulic decoiler.


A damping device, also known as pressing arm is used on hydraulic decoiler to prevent the coils being springout. In addition, people use a sensor to synchronize the rotation of decoiler and the running of roll forming machines or production lines. A hydraulic uncoiler has a control cabinet to control the rotation direction, speed, the expansion and release of the decoiler arm.

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hydraulic decoiler

METAL SHEET BENDING AND CUTTING MACHINE

A cold roll former is always a better choice for continuous and automatic production of cold formed metal products in metal fabrication industry, however, metal sheet bending and cutting machine cannot be always replaced.


When people need to produce in small quantities of steel sectional channels, such as small hat channels, a ridge cap, and c/z/u channels, a meal bending machine is a better choice; when they don’t have correct sizes of steel strips (widths or lengths), people always vote for a hydraulic cutting machine.


There are manufacturers that produce heavy-gauge bending machine and metal sheet cutting machine that could handle with materials over 5mm and the machines are named as hydraulic press brake and hydraulic guillotine shearing machine. For MTC, the hydraulic bending machine and hydraulic cutting machine are only built as auxiliary equipment, so these equipment can just do with metal sheets less than 1mm thickness and length 6 meters.


Different bending moulds will be used for the machine to bend different profiles. Usually a steel profile needs a few times bending and requires two operators for bending long metal or steel products (longer than 500mm) by feeding the materials, taking out and feeding again until the final products are made. A hydraulic oil pump is equipped to provide power for hydraulic bending machine or hydraulic cutting machine to work.


A pedal or footplate is built so that operators can easily control the running of machines.

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metal bending machine

Hydraulic Bending Machine

  • Suitable Material: Aluminum, Galvanized sheet or Pre-painted steel;
  • Hydraulic Power: 3KW
  • Hydraulic Station Pressure: 10-12MPA
  • Controlling System: Hydraulic
  • Min. Bending end: 5mm
  • Max Length: 4 meters or 6 meters
  • Material Thickness: 0.4mm-1.0mm
  • Working Speed: 0-8m/m
  • Voltage: 380V, 50HZ, 3 phase
metal cutting machine

Hydraulic Shearing Machine

  • Suitable Material: Aluminum, Galvanized sheet or Pre-painted steel;
  • Hydraulic Power: 3KW
  • Hydraulic Station Pressure: 10-12MPA
  • Controlling System: Hydraulic
  • Length: 4 meters or 6 meters;
  • Material Thickness: 0.4mm-1.0mm
  • Working Speed: 0-8m/m
  • Control: Electric cabinet + Footplate
  • Voltage: 380V/50HZ/3Phase

HYDRAULIC CRIMPING CURVED MACHINE

A hydraulic curving machine is necessary to make crimping curved panels or no-crimp curved corrugation sheets, mostly applied as roofing of warehouses, military camps, storages, parking sheds and so on. Being aesthetically pleasing along with better structural elements, curving roof panels are always the favourite panels of contractors, engineers or owners who seek beauty in their buildings. Crimping curved panels have higher strength compared to straight roof sheets and minimize the structural steel costs by offering higher purlin spacing and options as walls.


Hydraulic curving machines are designed for producing crimping curved roof panels or curved corrugation roof sheets by pressing roll formed roof sheets hydraulically and continuously at certain angles or radius of equal length. A PLC control system is used so that customers can set crimp quantities and crimp distance to reach the desired curving. The thickness of roof panels has to be less than 1.0mm; the pressing dies will be designed exactly the same as the roof sheets.


MTC provides dual functions for its designed hydraulic curving machine:Horizontal Pressing and Vertical Pressing. Horizontal pressing is mostly chosen for making short panels or small radius curved panels, while Vertical pressing for long sheet or big radius panels.


A hydraulic crimping curved machine usually consists a tube-structure supporting table, 2 pairs of forming rollers, pressing tool, hydraulic system, oil pump, and a PLC control cabinet.

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crimping curved machine

AUTO STACKING MACHINE

As a common auxiliary equipment to roll forming line or cut to length line, an auto stacking machine or auto stacker usually works at the end of lines to stack the end products automatically.

An auto stacker would minimize the labor cost for production lines, compared to traditional no-power support tables.


There are mostly two parts for auto stacking machine or auto stacker: Supporting part and Transportation part. The Supporting part is composed of series mechanical arms which which ,under pneumatic power, closes up and opens down so that end products can drop off to the Transportation part, which is made of steel frames with many tubes mounted. The unit would transport the stacked sheets out so that a forklift takes them to the warehouse or storage area.


Limit or proximity switches are used to control an auto stacker or auto stacking machine. Simply speaking, when the roll formed products or cut metal sheets are pushed to the stacking machine and touch the upper switch, the sheets will drop off immediately when the arms open down; when the arms open down to the lower switch, they will close up. There are usually two lengths for auto stackers, 6 meters and 12 meters for different stacking requirements.

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