Process Flow
Typical cut-to-length line process order
Actual line layout changes by material, thickness, width, sheet length, surface protection and stacking requirement, but most CTL projects can start from this review route.
01
Coil loading and coil preparation
Start with coil weight, inner diameter, outer diameter and loading method. These details decide whether a coil car, loading saddle or special mandrel range is needed.
- Confirm max coil weight and width
- Check coil ID and OD range
- Decide manual or powered coil loading
02
Uncoiling and strip entry control
The uncoiler, peeler, pinch roll and entry support help feed the strip safely into the line. Thicker coils and high-strength material may need stronger opening and guiding support.
- Confirm single or double mandrel uncoiler
- Review peeler and pinch roll need
- Check edge guiding or centering requirements
03
Leveling and flatness correction
The leveling section is usually the core of a CTL line. Roller diameter, number of rolls, cassette structure and adjustment method should match material thickness and flatness target.
- Define material grade and yield strength
- Confirm thickness range and flatness target
- Review whether precision leveling is required
04
Measuring and length control
Length tolerance depends on measuring wheel, encoder, control logic, line speed and shear method. This part should be reviewed before choosing standard or high-speed configuration.
- List common sheet lengths
- Confirm target length tolerance
- Check speed and accuracy priority
05
Shearing method selection
A stop shear can suit slower or heavier applications, while a flying shear supports higher output. The right choice depends on sheet length mix, production target and budget.
- Compare stop shear and flying shear
- Confirm burr and edge quality expectation
- Review maintenance and blade access
06
Conveying and stacking
After cutting, sheets need stable conveying, alignment and stacking. Thin sheets, surface-sensitive material or long sheets may need extra support to avoid scratches or disorderly stacks.
- Define max sheet length and stack height
- Check magnetic, vacuum or air-assist options
- Confirm manual or automatic stack discharge
07
Surface protection and packing flow
If the buyer processes stainless steel, coated coil or visible panels, surface protection, film, paper interleaving and packing area should be discussed early.
- Confirm surface sensitivity
- Decide film or paper interleaving need
- Reserve discharge and packing space
08
Automation, safety and layout integration
The final process flow should match plant power, foundation, crane route, operator position, safety guarding and downstream handling. These details affect final quotation and delivery scope.
- Prepare plant layout and power condition
- Confirm operator side and material flow direction
- Review safety guarding and control interface