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Hebei Harzone Co.,Limited

Changjiang No.1, Tianshan industry park, High- tech zone,

Shijiazhuang, Hebei, China

Tel: 86-311- 68036027

Fax: 86-311- 89928980

Email: hbharzone@163.com

Website: http://en.hbhzyj.com

 

Pure calcium cored wire

Pure calcium cored wire
Pure calcium cored wire

Pure calcium cored wire

Product description

Pure calcium cored wire

 

First, cored wire:
Cored wire will want to add various additives in the molten steel (deoxidation, desulfurization, Modificator alloy) crushed into a particle size, and then bind a cold rolled low carbon steel, a composite material having an arbitrary length. By means of a feed line unit, the specified number of cored wire at a constant speed through the slag layer and reach the bottom of the ladle.
Calcium cored wire and the molten steel in the aluminum oxide to form low-melting CaO-Al2O3-based compound, so as to achieve the modified Al2O3, with the sulfide in the molten steel to produce spherical or slug CaS, or CaS and MnS composite phase, thereby reached on the treatment solution deoxidation, desulfurization, micro-alloying constituent fine-tuning and modification, played a grain refinement, clean grain boundaries, to improve the organization, to improve the shape, size, segments of the non-metallic inclusions, improve steel mechanical properties, the elimination of the opposite sex, and to improve the purity of molten steel to improve the performance of the pouring of molten steel.
Second, I provide the type of cored wire;

 

Alloy cored wire technology indicators

Name

 Main component
%

Diameter

Strip thickness mm

Strip weight 
   (g/m)

Core Powder
(g/m)

Uniformity(%)

Si-Ca cored wire

Si55Ca30

13.0

0.4

170

220

2.5-5

Calcium aluminum cored 

Ca26-30 A13-24

13.0

0.4

170

210

2.5-5

Calcium and iron cored wire

Ca28-25

13.0

0.4

170

215

2.5-5

Calcium barium cored wire

Si55 Ca15 Ba15

13.0

0.4

170

220

2.5-5

Barium aluminosilicate cored wire

Si35-40 A112-16 Ba9-15

13.0

0.4

170

215

2.5-5

Pure calcium cored wire

Ca≥97

9.5±0.5

0.3

156

67

2.5-5

Carbon wire cored wire

C98 S>0.5

13.0

0.4

170

150

2.5-5


Third, the calcium content in steel and calcium yield
Calcium treatment in the liquid steel-Ca alloy inclusions in the liquid steel morphology control technology. Calcium and aluminum in the steel oxide reaction of CaO-AI2O3 compounds of low melting point, so as to achieve Al2O3. Modification of inclusions; generated with the sulfide is spherical or groups like CAS or CAS and MnS composite phase, to avoid the formation of dendritic MnS.
Add Method of calcium-based alloys generally be divided into injection method, feed the wire method and SCAT law.
Control of the depth, line speed and feed line when the argon blowing reasonable strength
In order to ensure a calcium feed line after melting in the ladle uniform distribution of the wire feeding position is a position of the maximum kinetic energy must be stirred in the ladle. And the top of the argon column location just stirred kinetic energy position of the maximum in the entire ladle, calcium line should be inserted in this position, i.e. with air brick in the same horizontal position on the thread insertion position.
The the feed line depth and speed ladle size, feed line depth: 0.65 to 0.75H appropriate.
H - ladle liquid height (m)
Due to the The ladle alloying short time, generally less than 2 minutes, adjust the speed according to the feeding amount of alloy and the size of the ladle.
Deoxy package in 35 tons of steel, the wire feed speed of 90 to 120m/min, the vertical direction of the core wire is fed into the ladle, the conduit outlet from the liquid surface 400 ~ 600mm.

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