CN2487741Y

CN2487741Y - Slag blocking dart

Info

Publication number: CN2487741Y
Application number: CN 01206803
Authority: CN
Inventors: 郑地明; 张大德; 刘南平
Original assignee: GANGCHENG ENTPR STANDARD PART
Current assignee: GANGCHENG ENTPR STANDARD PART
Priority date: 2001-07-10
Filing date: 2001-07-10
Publication date: 2002-04-24
Anticipated expiration: 2011-07-10

Abstract

The utility model provides a slag dart, mainly comprises steel core, locating lever and the refractory material of parcel outside it, and the steel core is a casting truncated cone, and the locating lever adopts round steel or screw-thread steel to make, and the locating lever adopts the pin fixed with cambered surface truncated cone, the utility model has the advantages of simple structure, low in manufacturing cost, processing technology are simple, convenient, can automatic accurately fix a position.

Description

A kind of slag blocking dart

The utility model relates to the accessory that a kind of molten steel is smelted, specifically a kind of utensil that is used for pushing off the slag.

When molten steel is smelted termination, the slag that is produced floats over the molten steel surface, for guaranteeing the quality of molten steel, prolong the work-ing life of tap hole and steel teeming ladle, so pushing off the slag is an important step in the process for making, usually adopted slag-blocking ball or slag stop cone to carry out pushing off the slag in the past, be exactly " top in shape floating plug " in addition in July 12 nineteen ninety-five by Wuhan Iron ﹠ Steel's application, application number is 95217019.1, and this floating plug is an integral body when machining, processing inconvenience when parcel refractory materials operation, the body exterior of this floating plug is a top in shape in addition, diversion trench is not set, though than the locating accuracy height of slag-blocking ball or slag stop cone, molten steel can not go out to the greatest extent.

It is a kind of easy to process that the purpose of this utility model is to provide, and the automatic accurate location of energy, and cost is low, the slag blocking dart that pushing off the slag is effective.

The technical scheme that the utility model adopted is, designed slag blocking dart, mainly by steel core (5), backstay (3) and the refractory materials (6) that is wrapped in outside it are formed, steel core (5) is a casting rounding frustum, backstay (3) is left to perforation (8) in its center, what be wrapped in that the outside refractory materials (6) of steel core (5) constituted is shaped as the cambered surface truncated cone, the upper diameter of the cambered surface frustum of a cone (1) is greater than the tap hole diameter, lower diameter is less than the tap hole diameter, and leave mortar mouth (7) at center, its underpart, be convenient to closely be connected with backstay (3), backstay (3) adopts pin (14) fixing with the cambered surface frustum of a cone (1), at the diversion trench (2) that also evenly leaves on the cambered surface of the cambered surface frustum of a cone (1) more than 2, be convenient to make molten steel (12) to go out to the greatest extent, backstay (3) adopts round steel or Deformed Steel Bars (4) to make, backstay (3) top is left greater than highly long one section of the cambered surface frustum of a cone (1) and is not wrapped up refractory materials, and the refractory materials (6) that wraps up in the starting point of parcel refractory materials constitutes a pallet, match with the mortar mouth (7) of the cambered surface frustum of a cone (1) lower central, the length of backstay (3) bottom is also greater than the height of the cambered surface frustum of a cone (1).

The utlity model has following advantage:

1, simple in structure, cost of manufacture is low;

2, owing to having adopted the branch body structure, so complete processing is simple, convenient;

3, have simple to operately, can locate automatically and accurately, arrive the tap hole position, be applicable to the advantages such as pushing off the slag operation of various types of converter steelmakings.

Fig. 1 is the slag blocking dart synoptic diagram

Fig. 2 is a slag blocking dart cambered surface frustum of a cone body diagrammatic cross-section

Fig. 3 looks synoptic diagram for the slag blocking dart steel core right side

Fig. 4 is a slag blocking dart backstay diagrammatic cross-section

Fig. 5 is a slag blocking dart work synoptic diagram

Below in conjunction with accompanying drawing the utility model is further described:

During processing and fabricating, steel core (5) adopts cast steel or cast iron to make the rounding taper type, backstay (3) is left to perforation (8) in its center, this frustum of a cone can be made solid or hollow, hollow can fill slag, sand, materials such as stone, so that regulate the proportion of slag blocking dart, then steel core (5) is placed and put into mortar mouth (7) tire core, finish the parcel operation of its refractory material outside (6) in the cambered surface truncated cone mould of diversion trench (2) tire core in the mode of cast or ramming, be shaped as the cambered surface truncated cone by what be wrapped in that the outside refractory materials (6) of steel core (5) constituted, the upper diameter of the cambered surface frustum of a cone (1) is greater than the tap hole diameter, lower diameter is less than the tap hole diameter, can lower diameter be controlled in the 40-120mm scope according to actual needs, and leave mortar mouth (7) at center, its underpart, be convenient to closely be connected with backstay (3), on the cambered surface of the cambered surface frustum of a cone (1), also evenly leave 2-6 diversion trench (2), the section form of diversion trench (2) can be done in echelon, rectangle, shape such as trilateral or semicircle, the degree of depth is controlled between the 15-80mm, width is controlled between the 20-80mm, so that the molten steel (12) in the converter is gone out to the greatest extent.

Backstay (3) adopts round steel or the Deformed Steel Bars (4) of φ 6-28mm to make, its length can be controlled between the 600-1800mm according to actual needs, also adopt the mode of cast or ramming to finish the parcel of its refractory material outside (6), the mortar mouth (7) of the thickness of its parcel and cambered surface frustum of a cone lower central is wringing fit mutually, be generally 10-50mm, backstay (3) top is left greater than highly long one section of the cambered surface frustum of a cone (1) and is not wrapped up refractory materials, and the refractory materials (6) that wraps up in the starting point of parcel refractory materials constitutes a pallet, the diameter of pallet is controlled between the 30-100mm, thickness is between 10-50mm, the length of backstay (3) bottom is also greater than the height of the cambered surface frustum of a cone (1), the full weight of slag blocking dart is generally at 20-60kg, and proportion is at 2-8kg/cm ³

During assembling, at first on the contact surface of the backstay (3) and the cambered surface frustum of a cone (1), smear a certain amount of refractory mortar (13) earlier, both can prevent the ablation of molten steel (12) to exposed round steel or Deformed Steel Bars (4), can strengthen being connected of backstay and boomerang body again, then with backstay (3) by the cambered surface frustum of a cone (1) center perforation (8) and the cambered surface frustum of a cone (1) are assembled into one, and perforation (8) is located with 2-4 pin (14) backstay (3) and the cambered surface frustum of a cone (1) to be fixed on the cambered surface frustum of a cone (1) top.

During use, adopting Liftable type to throw in dolly (9) is invested in this slag blocking dart in the interior molten steel (12) of converter (11), along with around it to the directed traction of tap hole mobile molten steel (12) to backstay (3), backstay (3) can directly insert tap hole in addition, therefore, this slag blocking dart can be automatically and exactly to the tap hole contraposition, thereby reaches the effect of accurate contraposition, good pushing off the slag.

Claims

1, a kind of slag blocking dart, mainly by steel core (5), backstay (3), pin (14) and the refractory materials (6) that is wrapped in outside it are formed, it is characterized in that: steel core (5) is a casting rounding frustum, backstay is left to perforation (8) in its center, what be wrapped in that the outside refractory materials (6) of steel core (5) constituted is shaped as the cambered surface truncated cone, the upper diameter of the cambered surface frustum of a cone (1) is greater than the tap hole diameter, lower diameter is less than the tap hole diameter, and leave mortar mouth (7) at center, its underpart, be convenient to closely be connected with backstay (3), backstay (3) adopts pin (14) fixing with the cambered surface frustum of a cone (1), at the diversion trench (2) that also leaves on the cambered surface of the cambered surface frustum of a cone (1) more than 2, be convenient to make molten steel (12) to go out to the greatest extent, backstay (3) adopts round steel or Deformed Steel Bars (4) to make, backstay (3) top is left greater than highly long one section of the cambered surface frustum of a cone (1) and is not wrapped up refractory materials, and constitute a pallet at the refractory materials (6) that the starting point of parcel refractory materials (6) is wrapped up, match with the mortar mouth (7) of the cambered surface frustum of a cone (1) lower central, the length of backstay (3) bottom is also greater than the height of the cambered surface frustum of a cone (1).