CN201381343Y

CN201381343Y - Steel-refining RH stove dip pipe

Info

Publication number: CN201381343Y
Application number: CN200920069090U
Authority: CN
Inventors: 匡宇航; 堵志云
Original assignee: Yixing Xinwei Leeshing Refractory Materials Co Ltd
Current assignee: Yixing Xinwei Leeshing Refractory Materials Co Ltd
Priority date: 2009-03-19
Filing date: 2009-03-19
Publication date: 2010-01-13
Anticipated expiration: 2019-03-19

Abstract

The utility model relates to a dip pipe technical field, in particular to a steel-refining RH stove dip pipe. The dip pipe comprises steel structures such as a steel gallbladder, rolling nails, an argon pipe, a flange, a brick supporting board, a reinforcement round steel piece and the like as well as periphery pouring material, automatic-flow material and a magnesite-chrome brick. The dip pipe is characterized in that a paint layer is coated at the outer surface of the steel gallbladder (1); the argon pipe (3) is welded at the outer surface of the steel gallbladder (1) by a hoop (32); the V-shaped rolling nails (2) are welded at other parts of the outer surface of the steel gallbladder (1) in an upper-sparsity and lower-denseness way; and the argon pipe (3) is also provided with an expansion bending knob (31). Compared with the prior art, the argon pipe is welded by the hoop, thereby avoiding the welding crack during welding; the argon pipe is provided with the expansion bending knob, so as to avoid the pulling crack of the argon pipe caused by the stress due to the high temperature; the V-shaped rolling nails are welded at the outer surface of the steel gallbladder, so as to improve the steadiness of the periphery pouring material due to the rolling nails.

Description

A kind of iron and steel refining RH stove soaking tub

[technical field]

The utility model relates to the soaking tub technical field, relates in particular to a kind of iron and steel refining RH stove soaking tub.

[background technology]

Iron and steel external refining RH stove soaking tub is the passage of high-temperature molten steel Rapid Cycle in the refining process, the soaking tub steel construction by the steel courage, roll nail, tunger tube, flange, brick plate and reinforcing round steel spare etc. and form; Soaking tub then has magnesia chrome brick, corundum matter self-flowing material and corundum-kinds such as (magnesium) spinel mould material with refractory materials, because material differs, safe, the efficient operation that the integrally-built stability that combines between them is produced for the iron and steel refining just seems quite important.

Traditional welding process make tunger tube easily weldering split, drawing crack; Occur the ring-type crack easily between mould material, steel courage, self-flowing material and the magnesia chrome brick, high-temperature molten steel and slag easily permeate, erosion and corrode refractory materials and steel part; Soaking tub mouth of pipe magnesia chrome brick is prone to phenomenons such as piece, thereby the smooth and easy operation of RH stove is affected.

Therefore, the longevity of soaking tub not only needs high-quality material, more needs the reasonable optimizing structure design.

[summary of the invention]

The purpose of this utility model is to overcome the deficiencies in the prior art, improves the work-ing life of soaking tub by the details of optimizing structure.

For achieving the above object, design a kind of iron and steel refining RH stove soaking tub, comprise the steel courage, roll nail, steel construction and peripheral castable material, self-flowing material and high-grade magnesia chrome brick such as tunger tube, flange, brick plate, reinforcing round steel spare, it is characterized in that: steel courage outside surface coating oil enamelled coating, coat of painting thickness≤1mm; Tunger tube adopts the anchor ear form to be welded on steel courage outside surface; The upward thin close mode down of all the other positions employings of steel courage outside surface is welded V-arrangement and is rolled nail; Described tunger tube also is provided with an expansion bending joint.

Peripheral castable material adopts the covering property structure at the mouth of pipe, and inwardly outstanding steel courage, self-flowing material and the high-grade magnesia chrome brick that encases inside in right angle protected inner steel courage, self-flowing material and magnesia chrome brick, and prevented magnesia chrome brick flake-off piece.

Adopt the welding brick plate that the liner magnesia chrome brick is reinforced between second ring liner magnesia chrome brick that the soaking tub mouth of pipe makes progress and the steel courage; Adopt the round steel reinforcing member simultaneously between the soaking tub mouth of pipe first ring magnesia chrome brick and the steel courage, roll to follow closely and reinforce.

The utility model is compared with prior art, and the welding process of tunger tube is taked the welding of anchor ear form, avoids welding in the welding process splitting; The drawing crack that expansion bending joint of tunger tube design forms tunger tube with the stress of avoiding thermal expansion generation in the high temperature use; Steel courage outside surface welding V-arrangement rolls nail, and close laying mode is rolled the firm effect of nail to peripheral castable material with increase under taking to dredge; Peripheral castable material is taked clad structure at mouth of pipe position, with the whole Bao Gu of steel courage, self-flowing material and high-grade magnesia chrome brick.

[description of drawings]

Fig. 1 is a soaking tub structural representation of the present utility model.

Fig. 2 is a tunger tube structural representation of the present utility model.

Referring to Fig. 1,1 is the steel courage; 2 for rolling nail; 3 is tunger tube; 4 is peripheral castable material; 5 is brick plate; 6 is the round steel reinforcing member; The 7 second ring liner magnesia chrome bricks that make progress for the soaking tub mouth of pipe; The 8 first ring liner magnesia chrome bricks that make progress for the soaking tub mouth of pipe.

Referring to Fig. 2,31 are the expansion bending joint; 32 is anchor ear.

[specific embodiment]

The welding process of tunger tube 3 adopts the welding of anchor ear 32 forms, avoids welding in the welding process splitting;

Tunger tube 3 is laid at the outside surface of steel courage 1, and designs the drawing crack that an expansion bending joint 31 forms tunger tube with the stress of avoiding thermal expansion generation in the high temperature use.

Steel courage 1 outside surface is painted before peripheral castable material 4 cast and is brushed processing, the thickness≤1mm of paint.

Steel courage 1 outside surface welding V-arrangement rolls nail, and close laying mode is rolled the firm effect of nail to peripheral castable material with increase under taking to dredge.

Brick plate 5 in the steel construction, round steel reinforcing member 6 and bottom roll 2 pairs of soaking tub magnesium chromium liners of nail fastening, reinforce and stablize most important.

Weldering is provided with the soaking tub peripheral castable material that rolls nail, tunger tube steel courage, self-flowing material and magnesia chrome brick is taked clad structure, adds the spray repair of using the gap, and the possibility that makes the soaking tub mouth of pipe ring-type crack occur has been eliminated to a considerable extent.

Claims

1. iron and steel refining RH stove soaking tub comprises the steel courage, rolls nail, steel construction, peripheral castable material, self-flowing material and magnesia chrome brick such as tunger tube, flange, brick plate, reinforcing round steel spare, it is characterized in that: steel courage (1) outside surface coating oil enamelled coating; Tunger tube (3) adopts anchor ear (32) to be welded on steel courage outside surface; All the other positions of steel courage outside surface are adopted to go up and are dredged down close mode and weld and establish V-arrangement and roll nail (2); Described tunger tube (3) also is provided with an expansion bending joint (31).

2. a kind of iron and steel refining RH stove soaking tub as claimed in claim 1 is characterized in that: peripheral castable material (4) adopts the covering property structure at the mouth of pipe, inwardly outstanding steel courage, self-flowing material and the magnesia chrome brick that encases inside in right angle.

3. a kind of iron and steel refining RH stove soaking tub as claimed in claim 1 is characterized in that: adopt welding brick plate (5) that the liner magnesia chrome brick is reinforced between second ring liner magnesia chrome brick (7) that the soaking tub mouth of pipe makes progress and the steel courage; Adopt round steel reinforcing member (6) to reinforce simultaneously between the soaking tub mouth of pipe first ring magnesia chrome brick (8) and the steel courage.