Introduction

Chinese company offers the technology for production of cold rolled ribbed steel bars using an innovative mill. This Y-type motor driven 3-roller continuous cold mill is a new technology which was successfully developed by local experts in mid 1990's. The production process involves the following steps: Heated rolling coil - uncoiling - descaling - shaping - collecting coil-straightening - length cutting - collecting stripes The main technical data is as follows: Products specifications - diameter from 5 mm to 14 mm Products standards - Chinese standards GB13788-92 Tensile strength - 550 MPa Cold measures - recycle emulsion Capacity - 200 kw Total weight - 14 tons Size - 6,000 x 19,000 mm Control measure - speed adjustment by dc motor/PLC control Main construction specifications of the mill and other equipment are as follows:

1. Coil releasing stand Weight - 1.5 tons Construction - welding steel construction Driving ways - positive 2. Mechanical descaling machine Construction - horizontal / vertical roller Roller size - diameter from 100 to 150 mm Quantity - horizontal 3, vertical 5 Motor - dc motor of 5.5 kw 3. Y-type motor driven 3-roller continuous cold mill Construction - motor bases are connected in series Lay-out - Y type (alternated 120 degrees with each other) Roller size - diameter of 220 mm (various from the products specifications) Roller groups - 2 to 4 (each group contains 3 rollers) Rolling speed - from 0 to 6 meters per minute (adjustable) Drive motor - dc motor of 160 kw 4. Roller straightening machine Construction - horizontal or vertical Roller parameters - diameter 220 mm, quantity 13 sets Motor - 20 kw 5. Coil collecting machine Diameter - 2,000 mm Load capacity - 1.5 tons Construction - welding steel Drive way - positive 6. Rule, cut and collection device Construction - welding steel table, operated manually Flying shears construction - four continuous rods, 5.0 kw Collection device construction - welding steel stand Operation table - 1 set with PLC control 7. Recycle cooling system - motor 5.0 kw 8. Specific tools - 1 set

Area of Application

Metalworking industry, steel industry. The mill can be used for the production of high intensive ribbed steel bars and wires for buildings, as well as billets

Advantages

Compared with the old production technology of cold ribbed steel bars, the mill has many advantages; It is unnecessary to undertake such operations as tipping the head of the coil and many times moulding in advance Continuous rolling is automatical

Development Status Commercialised

Transfer Terms Equipment Supply

Contact for more information:

Asian and Pacific Centre for Transfer of Technology
APCTT Building
C-2 Qutab Institutional Area
P.O.Box - 4575
New Delhi - 110 016
India