Cutting

Cutting

Cutting – using TRUMPF laser-cutting equipment, VANAD and MICROSTEP oxy-acetylene equipment, and MICROSTEP plasma-cutting equipment.

Lasers machines Qty. of tables Dimensions of table (mm) Max. thickness (mm)
TRUMPF TC L3030 2 3.000 x 1.500 20
TRUMPF TruLaser 3030 2 3.000 x 1.500 20
TRUMPF TruLaser 5030 2 3.000 x 1.500 20
TRUMPF TruLaser 5030 2 3.000 x 1.500 20
TRUMPF TruLaser 5030 2 3.000 x 1.500 20
Plasma Qty. of tables Dimensions of table (mm) Qty. of arc tubes Max. thickness (mm)
MicroStep EASY CUT 4001.20 P 1 4.000 x 2.000 1 25
O2 + Acetylene Qty. of tables Dimensions of table (mm) Qty. of arc tubes Max. thickness (mm)
VANAD PROXIMA 1 4.000 x 2.000 4 70
VANAD ARENA 1 4.000 x 2.000 4 70
MICROSTEP EASY CUT 6001.20 GGGG 1 4.000 x 2.001 4 150

Shearing – sheet cutting using 4 sheet scissors

Scissors Max. width of plate Dimensions of the table (mm)
TRUMPF TRUSHEAR 5163 16 3.050
NTC 4 2.000
NTC 2,5 2.000

Sawing – the main technology consists in saws that cut profiles, tubes and other rod material.

Hack-saw Quantity Diameter (mm)
BOMAR TRANSVERSE 410.260 GANC 1 ø260
BOMAR ERGONOMIC 320.250 ANC 1 ø250
BOMAR ERGONOMIC 320.250 -DG 1 ø250
VEEP F220 1 ø220
BIANCO A371 5 ø280

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Shaping

Shaping

Brake-pressing

Further processing of plate work and punchings can be performed on CNC TrumaBend press brakes with reverse stops and an older Lodd-brand crank folding machine. Max. bend length is 3230 mm at a strength from 85t to 400t.

Pressing

Presses are used mainly for bending, cutting and drawing sheets. We have 29 mechanical presses available with strengths from 25t to 800t.

Bending of profiles and bars

We use XOTH bending machines for profiles and rod material. Maximum dimensions for profiles are xx mm and the maximum diameter for bent pipes is xx mm.


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Welding

Welding

HERN s.r.o. provides joining of materials using several welding methods, mainly:

                MAG (metal active gas welding)

                RSW (resistance welding)

                Stud Weld - welding of fasteners

Other welding methods available upon request.

The company holds a certificate of quality in welding under EN ISO 3834-2 and is subject to ongoing customer audits ( CATERPILLAR 7SWE = 7 steps of welding excellence)

The most common welded material is construction steal (S235, S355,S420, but also S700 and HARDOX 450) in profiles and sheets.

The welded parts are 1 to 600kg heavy, with size up to 2000x2000x2000mm

The company carries out inspection of welded joints according to the internal specifications of the customer, but mainly according to  STN EN ISO 5817 grade C.

 The inspection is provided by certified personnel for

non-destructive inspection:

                               VT2 (visual testing level 2)

                               MT2 (magnetic testing level 2)

                               UT2 (ultrasonic testing level 2)

                destructive inspection:

                               Macro analysis of the welded joint

The company offers the capacity of 50 sites for manual welding and 9 sites for robotic welding.

The manual welding sites are equipped with professional inverter based welding power sources FRONIUS and CLOOS and quality ESAB and LINDE filler metals. These sites are also equipped with handlers, pillar cranes and bridges with carrying capacity up to 10 tons. The positioning of the welded parts is realised via pantograph and orbital positioners with the weight capacity up to 2.5 tons. All welders attend regular practical, theoretical and security training and hold adequate certificates, such as: EN ISO 9606-1 or EN 1418.

The robotic welding is provided by the CLOOS company. We use state of the art, highly productive methods, such as contactless laser positioning, tandem welding, quick clamping system for welding jig replacement, ...

Our custom tool room offering welding and inspection jigs provides a further advantage to the welding process.

HERN s.r.o. provides joining of materials using several welding methods, mainly:

                MAG (metal active gas welding)

                RSW (resistance welding)

                Stud Weld - welding of fasteners

Other welding methods available upon request.


Are you interested? Contact us.

Machining

Machining

Machinery for mechanical processing owned by the HERN s.r.o.:

Turning centres

·         CNC turning centres/lathes with a DMG CTX310 feeder,  for bars of 1 m length and 60 mm diameter

·         CNC turning centres/lathes with a 250 mm chuck, MAAS SP280 type

·         CNC turning centres/lathes with a 390 mm chuck TORNADO T10M type

·         Conventional lathes SV18RA, SU50

Milling machines

·         CNC vertical 3-axis milling machines, clamping tables of 1000 mm, 1300 mm, 2000 mm, MAS MCVQUICK type

·         CNC milling machine,3-axis, 2-axis, clamping table 4000 mm, GORATU G MASTER41 type

·         Vertical and horizontal conventional milling machines, types FGU50, FG40

Horizontal milling machines

·         CNC horizontal milling machine, 4-axis,  two pallets, clamping table 1 000 x 1 000, HELLER H 10000 type

·         CNC horizontal milling machine, 4-axis,  two pallets, clamping table 600 x 500, DMG DMC75H type

·         Conventional horizontal milling machines SCHARMANN, WHN

Mechanical processing of materials

·         S235, S355, S700, Hardox 400-600.

·         Mechanical processing of monoliths

·         Processing of welding units (up to 2000 x 1000 x 600 mm.)


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Surface treatment

Surface treatment

Powder coating line NOVA –S

Our state of the art powder coating line provides pretreatment using a (trication) zinc phosphate. The process consists of 13 steps: degreasing, staining, activation of zinc phosphate, passivation and rinsing.

This is followed by a cataphoretic coating, the base coat of the paint system on the product. It is one of the most modern and economically viable painting technologies of metal products.

The thickness of the cataphoretic coat (RAL9005): 15 – 30 µm

The quality of the powder coating depends mainly on the pretreatment of the base coat, the choice of the  method of coating and the application. Our powder coating is realised using the Wagner electrostatic technology The powder coats are applied in the range from 60 to 120 µm.

the maximum dimensions of parts that can be treated with a cataphoretic coat and a powder coat are 2500x1300x1500 mm and tge maximum weight capacity is 500 kg.

Corrosion resistance under ISO 9227: 1008 h in salt spray


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Other technologies

Other technologies

Additional technologies include blasting, deburring, grinding, degreasing, assembling and packaging.


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