ZhongTuo Window and Door Frame Roll Forming Machine for Aluminium and Steel 0-20m per minute

Steel Door Frame Machines 17 Roller Stations in Door Frame Production

Have you ever wondered how steel door frames go from metal coil to finished profiles? From steel strip to door frame, the process involves three core stages: decoiling and leveling, roll forming, and cutting to length. Understanding this process helps you know what kind of production equipment actually meets your door frame manufacturing needs.

The sections below cover the steel door frame production process, common profile types, equipment advantages, and key parameters. A machine to manufacture steel door frame handles these stages in one continuous line.

Steel Door Frame Manufacturing Process Overview

Steel door frame production starts from metal coil and goes through the following steps to become finished profiles.

Decoiler System → Feeding and leveling → Main Roll Forming System → Shearing Mechanism → Products receiving table

The entire process runs continuously from coil to finished product with minimal manual handling between workstations. The leveled strip enters the main machine in a flat state, which is the foundation for forming accuracy. Multi pass gradual forming means each station handles a small amount of deformation, allowing stress to release progressively.

Applications of Steel Door Frame Profiles

Different applications require different profile designs. This equipment produces various door frame profiles through roller design adjustments.

• Residential entry doors and interior doors: standard single rebate profiles with hinges mounted on the flat jamb surface

• Commercial fire rated doors and corridor doors: double rebate or reinforced profiles for greater load bearing surface and more stable hardware mounting points

• Industrial factory doors: heavy duty profiles with thicker material to handle frequent opening and impact conditions

Advantages of Steel Door Frame Machines

• Forming accuracy comes from the mechanical precision of rollers and gearbox, not from operator skill

• 17 roller stations with gradual cold forming help release stress properly during the forming process

• PLC control with encoder based closed loop length measurement completes automatic cutting at preset lengths

• Length tolerance is held at ±1.0 mm for 3 meter sections, reducing secondary cutting waste

• The complete line runs continuously, replacing traditional multi step processing with gear transmission for reliable operation

Parameters That Support Steel Door Frame Production

The parameters below come from the equipment specification sheet, covering roller configuration, core component materials, and forming accuracy.

Equipment Maintenance and Routine Care

Regular maintenance helps maintain forming accuracy and component life during long term operation.

• Rollers and blades use GCr12 material and need less frequent replacement under normal production conditions

• The hydraulic station uses 46# anti wear hydraulic oil; check oil level and quality regularly

• The gear transmission system uses gear transmission; check gearbox oil level periodically

• Clean the encoder and PLC control system regularly to prevent dust from affecting signal collection

• Check and tighten connecting bolts at each workstation periodically to avoid vibration shifts

Steel Door Frame Profile Options

Beyond the common profiles above, this equipment produces various other door frame profile shapes through roller design adjustments. The images below show common variations with different leg heights, return bend styles, and stiffener designs for your reference against project drawings.

A door frame roll forming machine offers similar production flexibility for different profile types.

Understanding the production flow from coil to finished profiles helps you determine whether the equipment configuration matches your production needs. Steel door frames start as flat coil, go through leveling and roll forming, and become finished profiles ready for installation. Steel door frame machines bring these stages together in one continuous production line.