CN101956042A

CN101956042A - Swirling flow resisting hammer

Info

Publication number: CN101956042A
Application number: CN 201010508501
Authority: CN
Inventors: 王熠
Original assignee: Maanshan Iron and Steel Co Ltd
Current assignee: Maanshan Iron and Steel Co Ltd
Priority date: 2010-10-14
Filing date: 2010-10-14
Publication date: 2011-01-26

Abstract

The invention relates to a swirling flow resisting hammer, belonging to an accessory of a steelmaking converter, in particular to a slag trapping device suitable for the steel tapping course of the converter. The swirling flow resisting hammer is characterized by comprising a hammer head and a hammer handle, wherein the hammer head is a light ball; the hammer handle is a flat strip stick made of iron; the length of the hammer handle is larger than the diameter length of the hammer head; the hammer head is tightly connected with the hammer handle; the hammer head and the hammer handle are jointed and coated with refractory materials; the integral center of gravity of the swirling flow resisting hammer is maintained at the tail of the hammer handle; and the hammer is thrown into a molten bath after steel tapping. The hammer has the advantages of novel conception, simple and reasonable structure, easy manufacture, convenient and practical use and operation method, safety, reliability and good slag trapping effect; the slag quantity after steel tapping is about 30 to 40% the roughing slag quantity of steel tapping; the purity of molten steel can be enhanced; the quality can be improved; good conditions are provided to the following processing of the molten steel; and the energy consumption is reduced.

Description

Anti-swirling flow hammer

Technical field

The invention belongs to the accessory of steel-making converter, relate in particular to suitable converter tapping process (later stage) and use slag-blocking apparatus.

Background technology

As converter based on the production Clean Steel, must solve the pushing off the slag problem of tapping process, the converter tapping later stage, because the molten bath shoals gradually, the swirling flow that molten steel produces when tap hole flows out sucks molten steel and flows into ladle, cause the ladle roughing slag amount to increase, for the converter of adopting slag stop cone or the pushing off the slag of slag-blocking ball mode, because of adding slag stop cone or slag-blocking ball in advance, then destroyed swirling flow to a certain extent, the feasible slag amount minimizing that sucks ladle because of swirling flow, and for the converter of using pneumatic pushing off the slag mode, tap hole uses the later stage bore to become big, and the following quantity of slag that produces because of swirling flow volume slag increases gradually, have a strong impact on the quality of molten steel, kind and subsequent technique are handled, and what influence was produced carries out smoothly.Therefore, thirst for the problem of the swirling flow volume slag in solution converter tapping later stage.

Summary of the invention

In order to overcome the defective that prior art exists, the purpose of this invention is to provide a kind of anti-swirling flow hammer, drop in the molten bath in the tapping later stage, float between slag and the molten steel, weaken swirling flow intensity, reduce the following quantity of slag of ladle, to improving steel quality, creating conditions for the molten steel subsequent disposal.

Anti-swirling flow hammer, characteristics are that hammer body is connected and composed by tup and hammer handle, tup is the light-weight spheroid, hammer handle is the flat rectangular rod of irony, and tup firmly is connected with hammer handle, and hammer handle length is greater than the tup diameter length, whole center of gravity remains on the hammer handle afterbody, makes hammer body can stand in the slag; Tup and hammer handle disjunctor coat refractory materials, guarantee that anti-swirling flow can stop the enough time in molten steel and slag.

Described tup is that light material is made spheroid, and described hammer handle is the rectangular rod of irony, and tup is connected with hammer handle, and the hammer handle medullary ray and the tup centre of sphere are on same straight line.

Described hammer handle is symmetrical radial flat steel sheets bar.

Density is 2.8-4.5g/cm behind the described tup coating refractory materials ³, density was close with molten steel density after hammer handle coated refractory materials.

The tapping later stage is dropped into the molten bath with this anti-swirling flow hammer, and every stove is thrown 2-3, and when MOLTEN STEEL FLOW, anti-swirling flow hammer produces collision above tap hole, subdues to be subjected to the swirling flow energy, destroys swirling flow, reduces the quantity of slag that flows into ladle.

Compared with prior art, advantage is, and is novel, simple and reasonable for structure, easy to manufacture, use easy to operate, practical safe and reliable, pushing off the slag is effective, the tapping later stage quantity of slag accounts for the tapping 30-40% of the quantity of slag down, can improve the molten steel purity, improves steel quality, for the molten steel subsequent disposal creates good conditions, reduced consumption.

Description of drawings

The invention will be further described for the contrast accompanying drawing below.

Fig. 1 is anti-swirling flow ball hammer structural representation.

Fig. 2 is the side-view of Fig. 1.

Fig. 3 is the vertical view of Fig. 1.

Fig. 4 is the structural representation of embodiment 2.

Embodiment

By Fig. 1, Fig. 2, Fig. 3 as can be seen, anti-swirling flow hammer is connected and composed by tup 1 and hammer handle 2, coats refractory materials 3 outward.

Embodiment 1

Tup 1 is a refractory materials matter solid sphere, and hammer handle 2 is the flat rod of rectangular parallelepiped, and both link together, and outer disjunctor coats refractory materials 3, coat refractory materials outward after, tup density is 2.8-4.5g/cm ³, hammer handle 2 density are close with molten steel density.

Embodiment 2

Tup 1 is solid refractory materials matter spheroid, and hammer handle 2 is symmetrical radial flat steel sheets, and both link together, and coat refractory materials 3 outward, behind the coating refractory materials, and tup density 2.8-4.5g/cm ³, hammer handle density is close with molten steel density.

Claims

1. anti-swirling flow hammer, it is characterized in that hammer body is to be connected and composed by tup (1) and hammer handle (2), tup (1) is the light-weight spheroid, and hammer handle (2) is the flat rectangular rod of irony, hammer handle (2) length is greater than tup (1) diameter length, and whole center of gravity remains on hammer handle (2) afterbody; Tup (1) and hammer handle (2) disjunctor coat refractory materials (3).

2. anti-swirling flow hammer according to claim 1, it is characterized in that the spheroid that described tup (1) is made for lightweight refractory, described hammer handle (2) is the rectangular rod of irony, and tup (1) is connected with hammer handle (2), and hammer handle (2) medullary ray and tup (1) centre of sphere are on same straight line.

3. anti-swirling flow hammer according to claim 1 is characterized in that described hammer handle (2) is symmetrical radial flat steel sheets bar.

4. anti-swirling flow hammer according to claim 1, it is 2.8-4.5g/cm that described tup (1) coats refractory materials (3) back density ³, density was close with molten steel density after hammer handle (2) coated refractory materials (3).