CN202047086U - Core-clad wire with jacket formed by steel strips - Google Patents

Abstract

The utility model discloses a core-clad wire with a jacket formed by steel strips. The core-clad wire comprises a furnace charge wire core and the jacket, wherein the jacket is formed by cladding the steel strips; and key technical points of the core-clad wire are as follows the thickness of the jacket is 1-2mm, and the furnace charge wire core is shaped like a core rod or a particle. The core-clad wire is free of the problem of the oxidization of refined furnace charge, and the shelf life can be prolonged for 3-5 years; the core-clad wire has the advantages of standard wire diameter, uniform density and accurate measurement; the thickness (1-2mm) of the steel jacket is about 3 times thicker than that of existing products, the jacket has high strength, so that accidents caused by broken wires can be avoided, and the thickness can ensure that the core-clad wire can enter to melt at a position next to a bottom plate of a steel ladle in molten steel at a temperature above 1600 DEG C, calcium can react at a deep position of the molten steel, molten steel can be processed sufficiently, and less loss and high absorption rate of the refined furnace charge can be achieved; moreover, the feeding of the core-clad wire into the molten steel leads to little splashing of molten steel, so that smoke pollution caused by gasification is greatly reduced, and the pollution degree for the environment is greatly lowered.

Description

Steel band sheath cored-wire

Technical field

The utility model relates to the furnace outer refining technology field, the steel band sheath cored-wire that uses in specifically a kind of iron and steel enterprise external refining process.

Background technology

As everyone knows, furnace outer refining technology is the mature technology that at present domestic and international iron and steel enterprise raising steel quality, production high-quality steel generally adopt, and in the external refining process molten steel is carried out the calcium processing and can change inclusion Al ₂O ₃, MnS form, reduce its fusing point, improve the flowability of al-killed molten steel, improve molten steel castability in the casting process, solve the sticking problem that easily causes nozzle clogging of molten steel.

In the external refining process, generally use the active metal as furnace charge, but because these furnace charge density are little, and the fusing point boiling point is low, easy oxidization burning loss when going into molten steel, recovery rate is low; Also exist big for environment pollutionly simultaneously, splash is serious, easily scalds operator's shortcoming.

Summary of the invention

The purpose of this utility model provides the steel band sheath cored-wire that uses in a kind of steelmaking process.

The purpose of this utility model is achieved in that it includes the furnace charge core and coats the sheath that forms by steel band, and it is characterized in that: described jacket thickness is 1-2mm, and described furnace charge core is plug or particulate state.

The core material of described furnace charge core is at least a in calcium, magnesium, aluminium, the silicon.

There is not the problem of refining furnace charge oxidation in the utility model, and the shelf lives can prolong 3-5 years; Its line footpath standard, density are even, and metering accurately; Steel sheath thickness 1-2mm is about 3 times of currently available products, overcoat intensity height, the broken string accident does not take place, this thickness can guarantee that this product melts enter into the ladle base plate in the molten steel more than 1600 ℃ near, core material is handled fully at the reaction of molten steel depths, molten steel, the furnace charge loss is few, furnace charge specific absorption height; The utility model is when line feeding in molten steel, and the splash of molten steel is very little, and the smoke contamination that causes that gasifies reduces greatly, and the dustiness of environment is reduced greatly.

Description of drawings

Fig. 1 is a cross section structure synoptic diagram of the present utility model.

Operation further describes to the utility model by example below in conjunction with accompanying drawing; but following example only is the utility model example wherein; the rights protection scope of not representing the utility model and being limited, rights protection scope of the present utility model is as the criterion with claims.

Embodiment

As shown in Figure 1, primary structure of the present utility model includes and is granular furnace charge core 2 and coats the sheath 1 that forms by steel band, and the thickness of this sheath is 1-2mm.

Its manufacture method is:

(1) the core material particle is joined in the steel band by mode of vibration;

(2) to the steel band enrobed compacted, reach the purpose of the encrypted core material of core material in the steel band, after curling, form the coil of wire, packing.

The core material of above-mentioned furnace charge core is at least a in calcium, magnesium, aluminium, the silicon; The refining core also can be mandrel structure.

When the thickness of sheath during less than 1mm, product melts near can not entering into the ladle base plate in the molten steel more than 1600 ℃; When the thickness of sheath during greater than 2mm, manufacturing cost height, long reaction time.

Realized the purpose of this utility model in sum.

Claims (2)

1. steel band sheath cored-wire, it includes the furnace charge core and coats the sheath that forms by steel band, and it is characterized in that: described jacket thickness is 1-2mm, and described furnace charge core is plug or particulate state.

2. steel band sheath cored-wire according to claim 1 is characterized in that: the core material of described furnace charge core is at least a in calcium, magnesium, aluminium, the silicon.