Marcegaglia Boltiere Slide En

8/12/2019 Marcegaglia Boltiere Slide En

1/22

Boltiere plant


2/22

The plant

The Marcegaglia plant in Boltiere(Bergamo)is dedicated to the manufacturingofwelded and seamless cold-drawn precisiontubesfor automotive, hydraulic and mechanicalapplications.

The production facility, expanded and upgradedin 2007, is equipped with state-of-the-artmachinery and performs a constant activityof research and development on productsand processes.


3/22


4/22

Munhall

Garuva

Dublin

Dudley

AntwerpenBremen

Dsseldorf

Lyon

Barcelona

Doha

Moscow

Praszka

Kluczbork

Yangzhou

Lima

Vladimir

Headquarters

6,000,000 sqm manufacturingareas

Boltiere

Headquarters

Headquarters


5/22

Cold-drawn welded tubes

Min. diameter (mm) 18

Max. diameter (mm) 230

Min. thickness (mm) 1,5

Max. thickness (mm) 15

Thickness > 15 mm upon request


6/22

Main manufacturing standards

MANUFACTURING

STANDARD

PRODUCT

DESIGNATION

GRADE* TREATMENT

EN 10305-2Cold-drawnwelded tubes

E195E235E275E355

+C Hard. No final treatment after final cold drawing.

+LCSoft. Final heat treatment is followed by a suitable

drawing pass (limited reduction of area).

+SRStress Relieved. After final cold drawing, the tubes

are stress relieved in a controlled atmosphere.

+A Annealed. After final cold drawing, the tubes

are annealed in a controlled atmosphere.

+N Normalized. After final cold drawing, the tubes

are normalized in a controlled atmosphere.

(*) Upon request: supply of steel grades not included in the above mentioned standards


7/22

Tubes for hydraulic applications

Tubes for automotiveand mechanical applications

Applications


8/22

Product range

Cold-drawn tubes for automotiveand mechanical applications

Ready-to-use cylinder tubes H9

Cylinder tubes suitable for skivingand roller burnishing or honing

Skived and roller burnished cylinder tubes H8

Cold-drawn tubes suitablefor chrome plating

Cold-drawn tubes for telescopic cylinders

Cold-drawn tubes for cardans


9/22

GRADE E195, E235, E275, E355

TREATMENT +C Hard

+LCSoft

+SRStress Relieved

+A Annealed

+N Normalized

SURFACE FINISHING Outside diameter and inside diameter: smooth as drawn (EN 10305-2)

On request: roughness Ra < 0.4 m

DIMENSIONAL TOLERANCE Standard: according to EN 10305-2

Special: on request

OPTIONAL PROCESSING Drawing in reactive oil

Dephosphating

Cold-drawn tubes for automotiveand mechanical applications


10/22

GRADE E355

TREATMENT +CHard

SURFACE FINISHING Outside diameter: smooth as drawn (EN 10305-2)

Inside diameter: roughness Ra < 0.80 m (average 0.500.60 m)

DIMENSIONAL TOLERANCE Inside diameter: ISO H9 (ISO H10 for thickness < 4 mm)

Ready-to-use cylinder tubes H9


11/22

GRADE E355

TREATMENT +SRStress Relieved


Inside diameter: with stock allowance (for skiving and roller burnishing)

Cylinder tubes suitable for skivingand roller burnishing or honing


12/22

Skived and roller burnished cylinder tubes H8

GRADE E355



Inside diameter: roughness Ra < 0.30 m

DIMENSIONAL TOLERANCE Inside diameter: ISO H8, min. 40 mm - max. 200 mm


13/22

Cold-drawn tubes suitable for chrome plating

GRADE E355

TREATMENT +N Normalized

+SRStress Relieved

SURFACE FINISHING Outside diameter: with stock allowance (for subsequent reworking)

Inside diameter: smooth as drawn (EN 10305-2)


14/22

Cold-drawn tubes for telescopic cylinders

GRADE E355



Inside diameter: roughness Ra < 1.6 m

DIMENSIONAL TOLERANCE Straightness 0.50 mm/m max

DIMENSIONS AND SHAPESDEVELOPED ACCORDING

TO CUSTOMER SPECIFICATIONS

SURFACE FINISH AND SPECIALTOLERANCES UPON REQUEST


15/22

Cold-drawn tubes for cardans

GRADE E195, E235, E275, E355

TREATMENT +C Hard

+LCSoft

+SRStress Relieved

+A Annealed

+N Normalized

DIMENSIONS AND SHAPESDEVELOPED ACCORDING

TO CUSTOMER SPECIFICATIONS

SURFACE FINISH AND SPECIALTOLERANCES UPON REQUEST


16/22

Production areas

A

C

E

G

B

DF

H

A

C

E

G

B

D

F

H

8 pointing lines

17pickling tanks

9 drawing benches(including 4 automated lines)

2 heat treatments lines

9 straightening lines10cutting lines

3 skiving and roller burnishing machines

Quality

Packing


17/22


18/22


19/22


20/22


21/22

Quality and environment

Among all the manufacturing companies in thecold-drawn tubes sector, Marcegaglia Boltiereis the first production plant awarded with fourquality certifications.The quality system isISO 9001certified, whileproduction for the automotive industry is ISO/TS 16949compliant.

Within a corporate policy promoting waste re-duction and environmental safety, MarcegagliaBoltiere has developedISO 14001environmen-tal quality system, while workplace health andsafety system is ISO 18001 OHSAScertified.


22/22

MARCEGAGLIA Boltiere

via Marcegaglia, 2 24040 Boltiere, Bergamo - Italy

tel. +39 . 035 419 78 11 fax +39 . 035 419 78 81

[email protected]

HEADQUARTERS

via Bresciani, 16 46040 Gazoldo Ippoliti, Mantova - Italy

www.marcegaglia.com

Documents

Marcegaglia Boltiere Slide En