Bilstein GmbH & Co. KG

A company of BILSTEIN Group

Post office box 5145
D-58101 Hagen

Phone: +49 – 2334 – 82 – 0
FAX: +49 – 2334 – 82 – 2002

Email: info@bilstein-kaltband.de
Web: www.bilstein-gruppe.de

Quality management: Certificate (PDF)

Representation in Austria since 1982

Burde & CO GmbH
Phone: +43 – 1 – 4023973 – 0
Email: service@burdeco.com

Grades

Cold strip

DC 01, DC 03 – DC 06 gem. DIN EN 10139 (so far DIN 1624 or SEW 095)
or as special grades e.g. DC 04 – Fine grain, DC 04 – low-tip
IF-grade = DC 06

Cold rolled sheet

DC 01, DC 03 – DC 06
gem. DIN EN 10130 (so far DIN 1623, Part 1)

Structural steels

St37 – St70 according to DIN1623, Part 2

Case-hardening steels

C 10 E – C 15 E
16 Mn Cr 5
17 Cr 3 gem. DIN EN 10132 – 2 (so far DIN 17210)

Tempered steels

C 22 E – C 60 E
25 Mn 4
25 Cr Mo 4 – 42 Cr Mo 4 gem. DIN EN 10132 – 3 (so far DIN 17200)

Spring strip steels

C 55 S – C 100 S
51 Cr V 4
102 Cr 6 gem. DIN EN 10132 – 4 (so far DIN 17222)

Micro-alloyed high-strength strip steel

H 240 LA – H 400 LA gem. DIN EN 10268
ZStE 260 – ZStE 420 gem. SEW 093
High-strength factory special grades BILSTEIN ZE 380 – BILSTEIN ZE 1000
similar DIN EN 10268 or SEW 093
Strip steel with higher strengths on request

Electrical strip

Semi-finished grades gem. DIN EN 10126 (so far DIN 46400 Part 2)

Enamelable cold strip

DC 01 EK, DC 04 EK, DC 06 EK gem. DIN EN 10209 (so far DIN 1623 Part 3)

Special steels

9S Mn 28
27 Mn Cr B 5 – 2
13 Cr Mo 4 4

Other special grades Inquiry

Technical details

Ring weight

Thickness range: 0,30 – 5,00 mm
Latitude range: 10 – 650 mm
Rings: till 20 kg / mm Bandwidth
Rods: 500 – 5000 mm Length

Ring weight of steel bands
With a starting weight for the hot strip coil of 20 tons and a width of 1300 mm, the result is a weight of approx. 15 kg/mm ​​strip width. This would also be the optimal ring weight of the cold rolled strip. As a rule, however, the ring weight is limited by other specifications, such as

  • Bearing facilities (weight and outside diameter)
  • internal transport devices (load capacity)
  • Handling devices on the punching machine (weight)
  • Reel size (internal diameter) and load capacity (weight)
  • Reel clearance (outer diameter)

And so the ring weight can be determined an example:

  • maximum ring – outer diameter Da = 1000 mm
  • Ring – inner diameter Di = 400 mm
  • Bandwidth b = 130 mm

according to the diagram, this results in a weight of 5.2 kg per mm strip width and thus a ring weight of 676 kg.

ringgew

Practice shows that optimization, i.e. increasing the ring weight, results in significant savings:

  • Price reduction due to large ring weight
  • Reduction of ring switching costs
  • better utilization of the punching machine
  • Capacity gain

Check your circumstances and order documents, it can be worth it! We gladly support you.

Pack winding

Narrow strips up to a width of 85 mm are wound up next to each other in one core up to a coil weight of max. 3500 kg. The advantage of this presentation lies in the long running time and the small amount of waste.

Optimization of the ring weight

The possibilities of the plant:

  • Cold strip dimension width 5 – 80 mm, Dicke 0,5 – 3,0 mm
  • Ribbon cross-section min. 2,5 mm², max. 90 mm²
  • Band qualities DC01 – DC04, St 37 – St 70, Ck10 – Ck 75, as well as similar
  • Strengths 280 – 800 N/mm²
  • Spool weight up to 3500 kg
  • Pack width 150 – 550 mm
  • Ring inner diameter 400 mm
  • Ring outer diameter 550 – 1160 m

packwick

Dimensions

Thickness of 0,04 mm to 14 mm
Width of 10 mm to 650 mm
Minimum width for bars 85 mm

Tolerances

gemäß DIN 1544 / EN10140
gemäß DIN 1541 / EN 10131
limited tolerances by agreement

Execution

according to G, LG, and K32 till K70

Surfaces

according to DIN 1624 / EN10139
blank, free of cracks and pores:RP, +bright shiny: RPG
according to DIN 1623 / EN10130

Roughness:

  • fine matt Ra 0,5 – 0,9 my
  • normal matt Ra 0,6 – 1,8 my
  • extra matt Ra 0,7 – 1,5 my
  • rough Ra 1,3 – 2,0 my
  • extra rough Ra larger 2,0 my