Copper Bronze Brass Sheet Strip Cold Rolling Mills

Copper (Bronze, Brass) Strip Rolling Process:

• Hot rolling from billet down to around 15-20mm thickness,
• copper cold rolling mill will be first rough rolling mill to get around 3mm sheet,
• Intermediate rolling mill from 3mm to 1mm
• then fine rolling mill makes copper strip 0.2-0.3mm and even copper foils 0.03-0.05mm

Hot rolling and rough cold rolling steps usually 2Hi two rollers mill, reverse reduce thickness.

Copper strip Reversible Cold rolling Mill can be 4-Hi or 6-Hi to realize rough rolling, fine rolling and foil rolling copper strips.

Take 16mm input reducing down to 0.5mm as example:
16mm-10mm-7mm-5mm-4mm-3.6mm(annealing)
4mm-2.4mm-1.7mm-1.5mm(annealing),

1.5mm - 0.9mm- 0.65mm - 0.5mm

total 11passes rolling

4Hi Hydraulic Reversible Cold Rolling Mill Specification

Coil strip grade:
Copper (C110/C120/C122/C144),
Yellow Brass (C260/C268/C272),
Red Brass (C230/C220/C210)
Bronzes (C510/C511/C519/C521/C524).

Input coil strip: 12～16× 300～450mm
Output coils: 0.8～1.5× 300～450mm

Thickness reduction per pass: Max 40%δ
Average thickness reduction per pass: 30%
Total thickness reduction per rolling after once annealing:≤90-95%δ
Thickness reduction to interim annealing: ~75%
Tension control precision: ≤5‰, thickness control precision: ≤土0.005mm

Copper Coils:
Max outer diameter:1600 mm
Inner diameter:raw material coils:500mm recoiling ID:508 mm
Max coil weight:8t

Max rolling force:3000 KN
Rolling torque:35 KN.m
Rolling speed:max 250 m/min
Recoiling speed:max 260 m/min
Recoiling force:30 KN

Copper(bronze, Brass) and copper alloy Strip plates are widely used in industries of electronics, automobiles, electricity, home appliances, etc.to make parts like electric elements, light holder, battery cap, buttons, seals, li-ion battery, etc.

Copper (Bronze, Brass) and copper Alloy Strips Specification

We are metal coil sheet processing machine manufacturer and supplier, we dedicate to supply of good quality machines and provision of complete services.

We work in the coil processing machine field for over 20years, we design and make each machine customized. From machine parts materials selection, each part machining and treatment, whole machine assembly and surface painting, we carefully note each detail of whole production process to achieve good quality machine result.

Rich Experiences:

Our people witness the developing process of sheet processing machines and develop ourselves with market, thus able to supply customers good machines at competitive prices.

Efficient Responses:

Investment of metallurgical equipment is a system engineering, which requires comprehensive plan and successive execution. The efficient responses of the equipment suppliers are very important. We did well in this and cooperate with customers for long time.

Senses of Mission:

Nothing proceeds smoothly without any problem, the important is to face and solve the problem. We put problem solution in priority, never escape responsibilities. Supply of good machines creating profit for customers is our mission, the most profitable equipment is the best. Customer is the King, we must provide him the most suitable machine to return his trust.

After-sale Services:

We can send engineers to customer plant to do machine installation and commissioning; we provide hydraulic schematic drawing, electric principle diagrams, mechanic spare parts drawings, civil works drawing; We always listen and give consultation.

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