CN205270335U

CN205270335U - Special steel continuous casting and rolling equipment

Info

Publication number: CN205270335U
Application number: CN201620030510.8U
Authority: CN
Inventors: 陈金富; 满春红
Original assignee: DONGBEI SPECIAL STEEL GROUP BEIMAN SPECIAL STEEL Co Ltd
Current assignee: Qigihar North Manchu Special Steel Co ltd; Jianlong Beiman Special Steel Co Ltd
Priority date: 2016-01-13
Filing date: 2016-01-13
Publication date: 2016-06-01
Anticipated expiration: 2026-01-13

Abstract

The utility model relates to a special steel continuous casting and rolling equipment, including conticaster and continuous rolling mill train, the conticaster from top to bottom includes ladle, middle package in proper order, supports the deflector roll, the continuous rolling mill train comprises a plurality of rolling mills, the rolling mill includes frame, a power device, the 2nd power device, still including lieing in inside first roll, second roll, third roll, the fourth roll of frame, first roll, second roll, third roll, fourth roll are on the coplanar, and the arranging of mutually perpendicular. The utility model discloses can promote special steel's quality and production efficiency, can eliminate completely that the continuous casting billet core is loose, shrinkage cavity and segregation defect to can sparingly heat link, reduction in production cost.

Description

A kind of special steel continuous casting continuous rolling equipment

Technical field

The utility model relates to steel continuous casting and rolling technical field, particularly relates to a kind of special steel continuous casting continuous rolling equipment.

Background technology

Along with the development of iron and steel production, even casting and steel rolling technology obtain very fast development, and the quality of steel and yield rate are also progressively in improve.

Existing continuous casting continuous rolling equipment comprises continuous caster and Continuous mill train, and steel, at Lian Zhushi, there will be the problems such as shrinkage cavity, loose, segregation usually, and steel stability is poor; Existing installation is for solving the problem, usually on continuous caster, adopt soft reduction technique, namely certain draught is implemented at the solidification end easily forming center segregation of casting blank, the non-denseization molten steel easily forming segregation and loose place is evenly flowed, thus eliminates or reduce because strand shrinks the internal voids formed.

Although the above-mentioned application gently pressing down technology makes steel product quality be improved, but in special steel industry, owing to range of product is complicated, production process affect bigger by extraneous factor, cannot meeting soft reduction technique completely and apply the condition possessed, therefore, in special steel manufacturing processed, soft reduction technique is not suitable for, especially, in the manufacturing processed of great circle continuously cast bloom, soft reduction technique is difficult to reach the effect of expection.

Practical novel content

The purpose of this utility model is to solve above-mentioned prior art Problems existing, and then a kind of special steel continuous casting continuous rolling equipment is provided, quality and the production efficiency of special steel can be promoted, can eliminate that continuously cast bloom core portion is loose completely, shrinkage cavity and segregation defects, and heating link can be saved, reduce production cost.

The technical solution of the utility model:

A kind of special steel continuous casting continuous rolling equipment, comprises continuous caster and Continuous mill train, and described continuous caster from top to bottom comprises ladle, tundish, support deflector roll successively; Described Continuous mill train is made up of multiple milling train, described milling train comprises frame, the first power set, the 2nd power set, also comprise be positioned at described frame inside the first roll, the 2nd roll, the 3rd roll, the 4th roll, described first roll, the 2nd roll, the 3rd roll, the 4th roll are in same plane, and orthogonal layout.

Further, described first roll, the 4th roll are driven by described first power set, and described 2nd roll, the 3rd roll are driven by described 2nd power set.

Further, the end of described first roll is provided with the first conical gear, and the end of described 4th roll is provided with the 4th conical gear engaged with described first conical gear, and described first power set is connected with described 4th conical gear by the first drive shaft; The end of described 2nd roll is provided with the 2nd conical gear, the 3rd conical gear that the end of described 3rd roll is provided with described 2nd conical gear engages, and described 2nd power set is connected with described 3rd conical gear by the 2nd drive shaft.

Further, the roll surface of described first roll, the 2nd roll, the 3rd roll, the 4th roll is cylinder shape.

Further, the roll surface of described first roll, the 2nd roll, the 3rd roll, the 4th roll is all formed with the depression of quarter circular arc shape.

Further, described Continuous mill train is made up of four milling trains.

The utility model has following useful effect: special steel continuous casting continuous rolling equipment disclosed in the utility model, comprise continuous caster and Continuous mill train, Continuous mill train is made up of multiple milling train, milling train comprises frame, first power set, 2nd power set, in frame inside, the first roll is installed, 2nd roll, 3rd roll, 4th roll, first roll, 2nd roll, 3rd roll, 4th roll is in same plane, and orthogonal layout, the position that the utility model forms liquid core length at continuously cast bloom adopts four-high mill and the heavy reduction rolling that even casting casting speed mates mutually, in the starting stage of rolling, the upper and lower of continuously cast bloom and both sides are produced distortion simultaneously, thus change the stressed condition in continuously cast bloom middle layer, avoid continuously cast bloom core portion quality being had an impact owing to there is horizontal tensile stress, extrude by continuously cast bloom extruding is formed the solute liquid to center enrichment, it is made to mix with surrounding mother liquor, elimination continuously cast bloom core portion can be reached loosen, the object of shrinkage cavity and segregation, continuous mill of the present utility model is owing to adopting four roller mechanisms, it may be achieved extrude distortion under big pressure, distortion amount to the non-solidifying liq in continuously cast bloom core portion to make up space abundant, therefore, it is also possible to reach and improve the object that continuously cast bloom draws speed.

Additional aspect of the present utility model and advantage will part provide in the following description, and part will become obvious from the following description, or be recognized by practice of the present utility model.

Accompanying drawing explanation

Fig. 1 is the structural representation of the utility model embodiment;

Fig. 2 is the structural representation of milling train in Fig. 1;

Fig. 3 is the roll shape of the utility model embodiment one;

Fig. 4 is the roll shape of the utility model embodiment two;

1-continuous caster in figure; 2-Continuous mill train; 3-ladle; 4-tundish; 5-supports deflector roll; 6-milling train; 7-first roll; 8-the 2nd roll; 9-the 3rd roll; 10-the 4th roll; 11-frame; 12-first power set; 13-the 2nd power set; 14-first conical gear; 15-the 2nd conical gear; 16-the 3rd conical gear; 17-the 4th conical gear; 18-first drive shaft; 19-the 2nd drive shaft; 100-round steel.

Embodiment

Below with reference to accompanying drawing, the utility model is described in detail.

Embodiment one:

Shown in composition graphs 1 to Fig. 3, special steel continuous casting continuous rolling equipment disclosed in the present embodiment, comprise continuous caster 1 and Continuous mill train 2, continuous caster 1 is from top to bottom disposed with ladle 3, tundish 4, supports deflector roll 5, molten steel needs successively by ladle 3, tundish 4, and forms the Lian Zhu liquid phase region of surface solidification, by supporting deflector roll 5, continuously cast bloom is delivered to Continuous mill train 2, heating link can be saved, reduce production cost; Continuous mill train 2 is made up of multiple milling train 6, milling train 6 comprises frame 11, first power set 12, the 2nd power set 13, first roll 7, the 2nd roll 8, the 3rd roll 9, the 4th roll 10 are installed in frame 1 inside, first roll 7, the 2nd roll 8, the 3rd roll 9, the 4th roll 10 are in same plane, and orthogonal layout.

First roll 7, the 2nd roll 8, the 3rd roll 9, the 4th roll 10 constitute four roller mechanisms, when continuously cast bloom is by milling train 6, four roller mechanisms are in the starting stage of rolling, just to the upper and lower of continuously cast bloom and both sides rolling simultaneously, thus change the stressed condition in continuously cast bloom middle layer, avoid the quality in continuously cast bloom core portion being had an impact owing to there is horizontal tensile stress, be conducive to continuously cast bloom core portion quality to improve.

Milling train 6 disclosed in the present embodiment is arranged on the position that continuously cast bloom forms liquid core length, first roll 7, the 2nd roll 8, the 3rd roll 9, the 4th roll 10 are extruded by continuously cast bloom extruding is formed the solute liquid to center enrichment, it is made to mix with surrounding mother liquor, reach column crystal and obtain fragmentation, eliminate that continuously cast bloom core portion is loose, the object of shrinkage cavity and segregation.

Further, the first roll 7, the 4th roll 10 are driven by the first power set 12, and the 2nd roll 8, the 3rd roll 9 are driven by the 2nd power set 13; More specifically, the end of the first roll 7 is provided with the first conical gear 14, the end of the 4th roll 10 is provided with the 4th conical gear 17, first conical gear 14 and the 4th conical gear 17 engage each other, 4th conical gear 17 is driven by the first drive shaft 18, first drive shaft 18 and the 4th roll 10 are coaxially arranged, one end of first drive shaft 18 is connected with the 4th conical gear 17, and the other end of the first drive shaft 18 is connected with the first power set 12; The end of the 2nd roll 8 is provided with the 2nd conical gear 15, the end of the 3rd roll 9 is provided with the 3rd conical gear 16,2nd conical gear 15 and the 3rd conical gear 16 engage each other, 3rd conical gear 16 is driven by the 2nd drive shaft 19,2nd drive shaft 19 and the 3rd roll 9 are coaxially arranged, one end of 2nd drive shaft 19 is connected with the 3rd conical gear 16, and the other end of the 2nd drive shaft 19 is connected with the 2nd power set 13.

As preferably, the roll surface of described first roll 7, the 2nd roll 8, the 3rd roll 9, the 4th roll 10 is cylinder shape, it is possible to make the first roll 7, the 2nd roll 8, the 3rd roll 9, the 4th roll 10 jointly form square hole, it is possible to rolling square steel. So arrange, it is ensured that linear differential during rolling is zero, it is possible to improve the surface quality of continuously cast bloom.

As preferably, Continuous mill train 2 is made up of four milling trains 6,4 milling trains 6 can be made like this to form different draught successively, on the one hand can reach column crystal fragmentation, eliminate that continuously cast bloom core portion is loose, the object of shrinkage cavity and segregation; Can improve continuously cast bloom draws speed on the other hand, it is to increase production efficiency.

Embodiment two:

The difference of the present embodiment and above-described embodiment one is only, the roll surface of the first roll 7, the 2nd roll 8, the 3rd roll 9, the 4th roll 10 is all formed with the quarter circular arc shape depression mated with round steel 100 phase to be rolled, so arrange, the first roll 7, the 2nd roll 8, the 3rd roll 9, the 4th roll 10 can be made jointly to form circular hole, it is possible to milling round steel. Can reduce like this when rolling exist linear differential, make continuously cast bloom surface nonaffine deformation be improved significantly, not only can improve the surface quality of product, and decrease the loss of roll.

Above embodiment just to the exemplary illustration of this patent, does not limit its protection domain, and its local can also be changed by those skilled in the art, as long as not exceeding the spirit of this patent, all in the protection domain of this patent.

Claims

1. a special steel continuous casting continuous rolling equipment, comprise continuous caster (1) and Continuous mill train (2), it is characterized in that, described continuous caster (1) from top to bottom comprises ladle (3), tundish (4) successively, supports deflector roll (5); Described Continuous mill train (2) is made up of multiple milling train (6), described milling train (6) comprises frame (11), the first power set (12), the 2nd power set (13), also comprise and it is positioned at inner the first roll (7) of described frame (11), the 2nd roll (8), the 3rd roll (9), the 4th roll (10), described first roll (7), the 2nd roll (8), the 3rd roll (9), the 4th roll (10) are in same plane, and orthogonal layout.

2. a kind of special steel continuous casting continuous rolling equipment according to claim 1, it is characterized in that, described first roll (7), the 4th roll (10) are driven by described first power set (12), and described 2nd roll (8), the 3rd roll (9) are driven by described 2nd power set (13).

3. a kind of special steel continuous casting continuous rolling equipment according to claim 2, it is characterized in that, the end of described first roll (7) is provided with the first conical gear (14), the end of described 4th roll (10) is provided with the 4th conical gear (17) engaged with described first conical gear (14), and described first power set (12) is connected with described 4th conical gear (17) by the first drive shaft (18); The end of described 2nd roll (8) is provided with the 2nd conical gear (15), the 3rd conical gear (16) that the end of described 3rd roll (9) is provided with described 2nd conical gear (14) engages, described 2nd power set (13) is connected with described 3rd conical gear (16) by the 2nd drive shaft (19).

4. a kind of special steel continuous casting continuous rolling equipment according to claim 1-3 any one, it is characterized in that, the roll surface of described first roll (7), the 2nd roll (8), the 3rd roll (9), the 4th roll (10) is cylinder shape.

5. a kind of special steel continuous casting continuous rolling equipment according to claim 1-3 any one, it is characterized in that, the roll surface of described first roll (7), the 2nd roll (8), the 3rd roll (9), the 4th roll (10) is all formed with the quarter circular arc shape depression mated mutually with round steel (100).

6. a kind of special steel continuous casting continuous rolling equipment according to claim 4, it is characterised in that, described Continuous mill train (2) is made up of four milling trains (6).

7. a kind of special steel continuous casting continuous rolling equipment according to claim 5, it is characterised in that, described Continuous mill train (2) is made up of four milling trains (6).