China, Cixi (Zhejiang)01. Apr. 2015

Trend-setting cold rolling mills for thin strip copper

In April 2015, Ningbo Xingye Copper started production on a 4-high and a 20-high cold mills for copper and copper alloys. The company is a member of the Xingye Copper International Group Ltd., a leading Chinese manufacturer of top-quality copper strip and plate products.

The input stock for the 4-high RCM comes from semi-continuous casting plants or a hot rolling mill. The strips, which are up to 16 mm thick, are wound into loose coils with variable inner diameters. Whatever its gauge, the strip is coiled under tension. A special feature of this stand is that the strip is fed into the closed roll gap. As a result, the mill rolls the thick, relatively short strip completely from end to end.

The 20-high mill is a SplitBlock design, type SB 23-26”. It can produce minimum final gauges of 0.05 millimeters. All the required gauge and flatness tolerances are ensured by effective control elements:

  • Hydraulic roll adjustment
  • Crown adjustment of the A-D axes
  • Intermediate roll shifting
  • X-Shape flatness measuring and control system X-Pact®
  • Level 2 offline model
  • Multi-Plate® filter

Impressions

Trend-setting cold rolling mills for thin strip copper

Main data

4-high mill

Materials Copper, brass, bronze, copper-nickel-silver alloys, copper-beryllium, copper-iron, copper-nickel-silicon-alloys 
Strip width 420–680 mm
Strip thickness 16.0–0.5 mm
Rolling speed max. 400 m/min
Capacity 75,000 t/year 

 

20-high mill

Materials Copper, brass, bronze, copper-nickel-silver alloys, copper-beryllium, copper-iron, copper-nickel-silicon-alloys 
Strip width 420–660 mm
Strip thickness 2.5–0.5 mm
Rolling speed max. 800 m/min
Capacity 55,000 t/year 
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