R7 meter four units four strands automatic continuous casting machine

R7 meter four units four strands automatic continuous casting machine

 

Description

 

Qualified molten steel from steel refining furnace will be poured into steel ladle, then it will be delivered to the position above the CCM after external refining processing, and molten steel will be poured into the tundish from ladle bottom outlet. Tundish nozzle shall be adjusted to match with the lower mould in advance.

 

After opening the tundish stopper or sliding nozzle (or sizing nozzle), molten steel will flow into forced water-cooled copper mould. The mould has no bottom, so the drop bottom is required before filling with molten steel, meanwhile the drop bottom play a role in drawing out the casting billet and it is called dummy bar.

 

The molten steel inside the mould will be quickly cooled into crystals; meanwhile molten steel front will be solidified together with the head of dummy bar at the bottom of mould.

 

The rear end of dummy bar is clamped in the withdrawal roller of billet withdrawing machine, and billet withdrawing machine and mould oscillating unit will be started simultaneously when molten steel inside the mould reach to required height and solidified shell, at the mould lower outlet, reach to a certain thickness.

 

Withdrawal and straightening machine will pull out the dummy bar (with dummy bar) from the mould at a certain speed. To prevent the solidified shell from cracking breakout and reduce the withdrawal resistance of the mould, mould inner wall lubrication and up-down reciprocating movement are required.

 

After pulling out from the mould, the casting billet shall be cooled by spaying water, and this is called secondary cooling, meanwhile casting billet liquid-core will be gradually solidified by the secondary cooling.

 

The casting billet is continuously pulled out and molten steel is continuously poured into the mould, forming into the continuous casting process.

 

After passing through the billet withdrawing machine and straightening machine (straightening is not required for vertical type and horizontal type continuous casting), the casting billet will be removed from dummy bar.

 

The completely solidified straight billet will be cut into required size by cutting equipment, and transported to subsequent process by conveying roller.

 

The equipment used for continuous casting steel production is actually the complete set of mechanical equipment in the continuous casting production line.

 

In the continuous casting production, one complete set of continuous casting equipment that share with one ladle and capable of one strand or multiple strand casting billet production is called one set of CCM.

 

One set CCM can be of multiple units or single unit, the unit at here means the independent driving system and work system in one set of CCM.

 

For each set of CCM, the total quantity of the casting billet that is casted at the same time is called CCM strand quantity.

 

If one set of CCM has only one unit and is capable of one casting billet production, it is called one unit one strand; if one set of CCM has one unit and is capable of more than two casting billets production at the same time, it is called one unit multiple strands; if one set of CCM has multiple units and capable of multiple casting billet production, called multiple units multiple strands.

 

Model

 

Full arc continuous casting machine

Radius: R2.5m, R3m, R4m, R5.25m, R6m, R7m, R8m, R9m, R10m.

Casting billet: square billet, round billet, slab.

 

Horizontal continuous casting machine

Casting material: gray iron, ductile iron, stainless steel, alloy steel.

 

Simple design casting machine

Taper shape billet, max length 1.5m

 

All types of casting machine have following components: steel ladles support equipment, main casting equipment, roller table and billet cutting machine and cooling bed.

 

The billet caster equiped with scrap steel IF induction electric melting furnace or arc furnace, steel billet monthly output about 2000t-15000t, configured with different models of rolling stands, processing to finished steel products, angle steel, deformed bar, steel bar, channel steel etc.

 

Technical parameter

 

 

Item	R2.5M	R3M	R4M	R5.25M	R6M	R8M	R10M
Radius	2.5m	3m	4m	5.25m	6m	8m	10m
Strands	single strand, two strands, three strands,four strands,multi-strands
Billet section area	60x60 70x70	60x60 70x70 80x80	60x60 70x70 80x80 90x90 100x100	70x70 80x80 90x90 100x100 120x120	80x80 90x90 100x100 120x120 150X150 150X225 150x280	100x100 120x120 150X150 165x165 150/165x225 150/165x280 150/165x300 165x330 150/165x500 φ100/120/150	150X150 165x165 180x180 200x200 150/165x225 150/165x280 150/165x300 165x330 φ100-300
Billet length	0.8-3	0.8-3	1.5-9	1.5-9	1.5-12	1.5-12	1.5-12