Durmazlar DT-10 and DT-15 Press Brakes: Technical Specifications and Bending Guide

What Are the Durmazlar DT-10 and DT-15 Press Brakes?

The Durmazlar DT-10 and DT-15 are CNC press brake (bending) machines widely used in the sheet metal industry. These machines form complex geometries such as box sections, channels, and U- and Z-profiles by bending thin and medium-thickness sheets to specific angles. Durmazlar, Turkey’s leading machine manufacturer, delivers high bending performance in a compact footprint with its DT series.

While the DT-10 model has a 100-ton bending capacity, the DT-15 model, with its 150-ton capacity, is preferred for bending thicker and wider sheet metal parts. Both machines are offered with servo-electric or hydraulic drive options and deliver reliable performance on industrial production lines.

DT-10 Press Brake Technical Specifications

The DT-10 Durmazlar press brake is an ideal bending solution for medium-scale sheet metal workshops and prototype production lines. Its main technical specifications are as follows:

• Bending capacity: 100 tons
• Working length: 3,100 mm
• Stroke: 200 mm
• Open height (daylight): 370 mm
• Durmazlar CNC control: ESA S640 / Delem DA-66T (optional)
• Back gauge (backgauge): X, R axes, CNC-controlled
• Speed: Rapid approach 100 mm/s, bending speed 10 mm/s

The DT-10’s compact design enables efficient operation even in confined spaces. Thanks to the CNC control unit, programmable bend angles, automatic return, and multi-bend sequences are easily defined.

DT-15 Press Brake Technical Specifications

The DT-15, as a step up from the DT-10, stands out with its higher tonnage and wider working length:

• Bending capacity: 150 tons
• Working length: 3,100 mm
• Stroke: 250 mm
• Open height (daylight): 420 mm
• Durmazlar CNC control: ESA S640 / Delem DA-66T / DA-69T (optional)
• Back gauge: X, R, Z1, Z2 axes (4+ axes)
• Crowning system: Automatic table crowning compensation

The DT-15’s more powerful hydraulic system delivers stable results when bending sheet metal parts 3 mm thick and above. Thanks to the automatic crowning system, a uniform bend angle is guaranteed even on long parts.

Offline Bending Simulation and Programming

In modern press brake operations, offline bending simulation is the key to production efficiency. Instead of trial and error at the machine, the bending sequence, tool selection, and collision analysis are carried out in a computer environment. This approach reduces machine idle time by up to 40%.

Metalix cncKad and similar CAM software provide fully compatible post-processor support for the DT-10 and DT-15. The offline programming process follows these steps:

1. 3D model import: DXF/STEP file transfer from SolidWorks or AutoCAD
2. Flat pattern calculation: unfolding based on the K-factor and bend allowance
3. Bending sequence determination: automatic calculation of the most efficient bending sequence
4. Die and punch selection: determining the V-die opening and punch radius based on sheet thickness
5. Tonnage analysis: calculating the tonnage required for each bending step
6. Collision analysis: part-tool-machine collision check in a 3D simulation environment
7. CNC program generation: machine-specific G-code generation via the post-processor

K-Factor and Flat Pattern Calculation

For accurate bending, the K-factor calculation is critically important. The K-factor determines the position of the neutral axis as the sheet metal bends and directly affects the flat pattern calculation. Typical K-factor values for the DT-10 and DT-15:

• Mild steel (DC01): K = 0.40 – 0.45
• Stainless steel (AISI 304): K = 0.42 – 0.48
• Aluminium (5754): K = 0.33 – 0.38
• Galvanised sheet (DX51D): K = 0.40 – 0.44

By defining the K-factor in the SolidWorks sheet metal module, the flat pattern is generated automatically from the 3D model. This flat pattern is transferred directly into Metalix cncKad to create the bending program. At Burak Engineering, our expert team provides consultancy and freelance services in these processes for SolidWorks and Metalix integration.

CNC Control and Programming Details

Programming can also be done directly on the CNC control units of the DT-10 and DT-15 (ESA S640 or Delem DA-66T). The parameters defined on the control unit:

• Bend angle (target angle and springback compensation)
• Back gauge position (X axis)
• Bending speed and pressure setting
• Stroke limit and bottom dead centre (BDC)
• Multi-bend program (step bending)

However, for complex parts and series production, offline programming is far more efficient. The programming time spent at the machine drops to zero, and a correct result is achieved from the first part.

Burak Engineering Press Brake Services

At Burak Engineering, we offer comprehensive services related to the Durmazlar DT-10 and DT-15 press brakes:

• Offline bending programming: preparing fully simulated programs with Metalix cncKad
• SolidWorks sheet metal design: manufacturable 3D models, flat patterns, and BOM generation
• Tool selection consultancy: die, punch, and special tooling recommendations
• Tonnage and K-factor analysis: precise material-based calculation
• Collision analysis: bending sequence optimisation and error prevention
• Online training: CNC programming training for press brake operators

For detailed information and a quote, visit our contact page or reach us directly via WhatsApp.

Frequently Asked Questions