China OEM Coil Steel Cut to Length CTL Lines Factory ( 0.2 -30 x 3000 )

We are factory of sheet metal cut to length lines for 20years, our market is both domestic in China and foreign in the world, various customers give us chances of designing and making different configurations of cut to length lines, this give us rich experiences to understand and satisfy customers.

We aim at customizing each cut to length machine as per customers requirements, thus can give different options to meet various expectations of different customers.

1. The raw coil materials can be low carbon steel, medium & high carbon steel, high quality steel, stainless steel, aluminum, copper, etc.
2. Cutting style can be start-stop, fly cutting or rotary shear.
3. Leveler can be 4hi or 6hi, backup rolls can be manually or automatically adjusted.
4. Length measuring can be servo encoding or rotary encoder.
5. Each line can be twice leveling to suit high tensile sheet
6. Two levelers can be arranged in one line to level wide range of thickness
7. Stacking system can be simpler or complicated for different materials or speeds.

Applications:

1. Traditionally and nowadays most metal sheet cut to length line for processing low carbon steel sheets, low alloy steel sheets, hot rolled or cold rolled, galvanized or colored.
2. Stainless steel sheet cut to length line is becoming more percentage with the market requiring more stainless steel sheets, the SS sheet surface is bright, must be nicely protected in the uncoiling, leveling and cutting process.
3. Aluminum sheet is light and anti-corrosion, surface is clean, the cut to length line is flying shear and all passover rollers are rubber coated.
4. Fast cutting to length is needed because customers want enough production within certain time and land area. Thus, high speed cutting line, either flying shear or stop shear, is popular.
5. Sheets stacking must be fast and in order, receive one sheet,drop down and push it neatly.
6. Automation system is there in electric control, big touch screen and PLC program.

Optional CTL lines:

Stop-Go Lines :The strip is fed through the line quickly and then deaccelerated and comes to a complete stop. The stationary shear cut a sheet or blank to a predetermined length. It is a tight-line configurations is a good choice when space inside your plant is limited, because the tight lines usually are shorter than free-loop designs.

The foundation costs are lower because a looping pit isn’t required,

The thickness capacity of tight-line machines is virtually unlimited, making them ideal for heavy-gauge applications.

Tight-line machines with stationary shears have the lowest cost of any cut-to-length line, but have the lowest productivity as well.

In addition, tight-line machines may damage thinner materials because visible roll marks can appear where material stops in the leveler.

A flying shear can be installed to increase production especially in the case of heavy gauge. The flying shear must be synchronized perfectly with the speed and location of the moving strip. Synchronization can be achieved, but meanwhile the cost is usually substantial,

Continuous CTL (Free loop mode): the strip is fed out of the master coil and through the leveler. The strip is now fed at a constant rate into a looping pit of a desired depth according to the thickness and speed of cutting to length. At the other end of the loop, a separate servo feeder measures and feeds the material to the shear. The shear can be stationary or flying type. The continuous CTL is preferred when lighter gauges are cut to length generally less than 3mm thick.

Trapezoidal CTL: the shear cuts on an angle from 90 degrees perpendicular to the strip to 30 degrees tangent. These sheets or blanks are used primarily in the automotive and taper pole industries.

Parameters(take carbon steel plates example):