2-Hi Cold Rolling Mill

2-Hi Cold Rolling Mill


The 2-Hi cold rolling mill, one of metal coil cold rolling mill, is made from good quality raw material. At the same time, we are upgrading with the latest technological equipments when producing this cold rolling mill. Due to different numbers of rollers, the metal coil cold rolling mill is divided into 2 Hi, 4 Hi, 6 Hi, and 12 Hi AGC.

System of Rollers:
One pair of work rollers press steel strip from top and from bottom to realize steel plate thickness reducing. The other rollers usually in the form of pairs press onto work rollers together with the work rollers compose the roller system of rolling mill.
The rotating rollers are installed into bearing seats which should be carefully considered in design and manufacture, for the precision of bearing seats are highly relative with the stable working of roller system.
Four hi roller system: one pair of work rollers and one pair of backup rollers array in a vertical line, popular in steel strip rough rolling and narrow metal plate fine rolling.
Six hi rollers: as fine rolling roller system, a pair of work rollers and a pair of big backup rollers as well as a pair of axially transferable middle rollers array in vertical line.
Eccentric 4-hi eight rollers: the pair of big backup rollers deviate a little from the vertical center of work rollers, two pairs of small backup rollers sit at the other side to support the two work rollers, in this way, the work rollers are backed up not only in vertical direction but also in horizontal direction.
18 rollers(update on four hi rollers): four hi roller system, at each side six small backup rollers(three top and three bottom rollers array in radial style) support the two work rollers from side direction, for high quality hard metal plate fine rolling.
Besides the above roller system options, we are able to design new style of roller system according to customer’s specific rolling request.
Finally but also very important: the roller system needs suitable roller material and hardness to reach roller system performance. We do know how to choose the right roller material and hardness.


1. The 2-Hi cold rolling mill is a kind of portable type.
2. One stand and two frames are made from fabricated steel plates.
3. The number 2 Rolls on this cold rolling mill are made of chilled material.
4. It is equipped with heavy duty reduction gear.
5. The screw down system is manual.
6. We adopt one number C.I. casting flywheels.

The detail specification as follows:

Ф165×250 Two High Cold Rolling Mill

Rolling Conditions:

Material: carbon steel
Input width: ≤150mm, thickness: 2.75mm
Output width: ≤150mm, thickness≥: 0.8mm
Rolling force: p=60t
Rolling speed: v≤13m/min

Parameters of Ф165×250 Two High Cold Rolling Mill:

Rolling mill: Ф165×250 two roller mill
Electric screw-down motor: 2.2kw×2
It can be pressed down or lifted at the same time, and pressed down or lifted separately.
Worm gear box: HT200
Main motor: YZ type, 30kw-6
Main reducer: JZQ650
Coiler: It adopts hydraulic expansion cylinder.
Reducer: JZQ350
Motor: YLJ180-160-6

Technical Parameters of 2-Hi Cold Rolling Mill:

Type Φ120 × 160 Φ150 × 220 Φ175 × 400 Φ250 × 500 Φ320 × 600 Φ400 × 800 Φ500 × 1000
Input thickness (mm) ≤4 ≤4 ≤4 ≤8 ≤10 ≤20 ≤30
Output thickness (mm) 0.15 ≥0.35 ≥0.35 ≥0.4 ≥0.4 ≥0.5 ≥0.6
Strip width (mm) 10-100 ≤150 300 370 450 ≤600 800
Rolling pressure (T) 65 100 100 120 150 160 260
Rolling speed (m/min) 12 13 13 13 13-15 13-15 15-25
Main motor (KW) 22 30 37 55 75 155 160
Press-down motor (KW) 1.5 2.2 2.2 3 4 4 7.5
Press-down speed (mm/s) 0.09 0.09 0.09 0.09 0.09 0.12 0.12
Speed reducer JZQ550 JZQ750 JZQ750 JZQ850 JZQ1000 JZQ115 JZQ130
Weight (T) 4.8 5.8 7 12.8 19 40 50
Shanghai Ivy Import & Export Co., Ltd is a professional manufacturer and supplier of 2-Hi cold rolling mill in China. We still have other products: metal cut to length line, including thin coil cut to length line, middle thick coil cut to length line and thick coil leveling cut to length line; roll forming machine like C, Z, U, L purlin forming machine, guardrail, deck, keel forming machine etc; welded pipe making machine like Φ25 high frequency welded pipe production line, HG32 HF welded pipe making machine etc. With good quality and affordable price, our products has been exported to many countries, such as Germany, Holland, India, Indonesia, New Zealand, Syria, United Arab Emirates, Russia, Kuwait, South Africa, and Bangladesh.

Tags: 2-Hi Rolling Mill For Sheet Material | Two High Cold Rolling Mill For Metal | 2-Hi Cold Rolling Mill | CNC 2-Hi Cold Rolling Mill