WO2011035729A1

WO2011035729A1 - Crystallizer

Info

Publication number: WO2011035729A1
Application number: PCT/CN2010/077327
Authority: WO
Inventors: 毛承志; 秦文彬; 胡晓路
Original assignee: 中冶赛迪上海工程技术有限公司; 中冶赛迪工程技术股份有限公司
Priority date: 2009-09-27
Filing date: 2010-09-26
Publication date: 2011-03-31
Also published as: CN101658904A; CN101658904B

Abstract

A crystallizer comprises a left support (7), a right support (10), a width adjusting device (1), an inner-arc-side water tank and copper plate assembly (8), and an outer-arc-side water tank and copper plate assembly (9) and narrow-edge copper plates (4). The width adjusting device (1) includes a screw driving device (16) provided with a brake and a double-nut pre-stressed-planetary ball screw nut (17). The crystallizer improves the width adjusting positioning precision, and also enables the width adjusting device to precisely self-lock, thereby preventing drifting phenomenon in the process of pouring.

Description

Crystallizer

Technical field

The invention belongs to the field of molding technology, and relates to a continuous casting machine, in particular to a crystallizer on a continuous casting machine.

Background technique

With the rapid development of China's steel industry, the continuous casting machine used in the steel industry has also developed, and created a very important condition for the smooth development of the steel industry, and the crystallizer is an important equipment in the continuous casting machine. The crystallizer is cooled to form a slab, and therefore, the quality of the slab directly affects the quality of the slab.

At present, the general molds on the continuous casting machine on the market include the widening device, the legs, the narrow side foot rolls, the narrow side copper plates, the wide side foot rolls, the left support, the right support, the inner arc side water tank and the copper plate assembly and the outer arc. Side water tank and copper plate assembly; wherein the inner arc side water tank and copper plate assembly, the outer arc side water tank and the copper plate assembly and the width adjusting device are directly fixed on the left support and the right support; the narrow side copper plate is connected with the widening device; The legs are fixedly connected with the left support and the right support, and support the crystallizer after the lower line; the narrow side foot roller is fixedly connected with the widening device: the wide side foot roller and the inner arc side water tank and the copper plate assembly and the outer arc side water tank And copper plate assembly connection. The crystallizer of this structure has a low positioning accuracy; it has insufficient self-locking torque due to vibration during the casting process, the device gap is too large, and drift is likely to occur.

Summary of the invention

In view of the above insufficiency, the present invention provides a crystallizer which has high precision in positioning and positioning, and can be accurately self-locking during casting.

The object of the present invention is achieved by the following technical solutions: a crystallizer comprising a left support, a right support, a widening device fixed on the left support and the right support, and an inner arc side water tank and a copper plate assembly And an outer arc side water tank and a copper plate assembly, and a narrow side copper plate connected to the widening device; the widening device includes a guiding rod, one end of the guiding rod is connected with the narrow side back plate fixed by the narrow side copper plate, and the other end is connected Inserting into a sleeve fixed on the narrow-side water tank, a screw is disposed in the sleeve, the widening device further includes a screw transmission device provided with a brake and a double-nut pre-tightening planetary ball screw nut; A nut pre-tightening planetary ball screw nut is disposed at one end of the lead screw and connected to an end surface of the guide rod by a lock bolt; the screw transmission device is coupled to the other end of the lead screw.

The above crystallizer is provided with a narrow-side copper plate sliding mechanism, the narrow-side copper plate sliding mechanism comprising a sliding support and a sliding block slidingly connected with the sliding support: the sliding support is fixed on the inner arc side water tank and the copper plate assembly and the outer arc side a water tank and a copper plate assembly top; the sliding block is fixed on the top of the width adjusting device, and the sliding block slides in the sliding support during the widening process, thereby realizing the adjusting device Precise positioning in the up and down direction.

In order to realize the rotation of the sliding block, the sliding portions of the sliding block and the sliding support are preferably elliptical; of course, the shape may be determined according to specific conditions.

The narrow side copper plates are provided with transition arcs on both sides thereof, so that cracks can be prevented from being generated due to excessive cooling during the casting process.

The brake can employ a disc brake.

Beneficial effect

1) The widening device on the crystallizer of the present invention adopts a screw transmission device provided with a brake and a double nut pre-tightening planetary ball screw nut to reduce the gap of the transmission chain, thereby improving the positioning accuracy of the crystallizer, and During the pouring process, the self-locking torque of the widening device is not reduced by the vibration of the crystallizer, and the precise self-locking of the widening device is realized, preventing the drift phenomenon during the pouring process.

(2) The present invention adds a narrow-side copper plate sliding mechanism to the crystallizer, including a sliding support and a sliding block slidably coupled to the sliding support. When the widening device is in the process of widening, the sliding block also slides on the sliding support. Moreover, the sliding portion of the sliding block has an elliptical shape, which not only realizes high-precision positioning of the widening device in the up and down direction during the widening process, but also has a rotating function.

(3) In the present invention, the both ends of the narrow-side copper plate are provided with a transition arc, thereby realizing the transition of the slab angle during the pouring process, preventing cracking due to excessive cooling.

DRAWINGS

BRIEF DESCRIPTION OF THE DRAWINGS Figure 1 is a front elevational view showing a crystallizer according to a first embodiment of the present invention.

Figure 2 is a plan view of the crystallizer of Figure 1.

Figure 3 is a partial cross-sectional view of the narrow side copper plate of Figure 1.

4 is a schematic structural view of a sliding mechanism of a narrow-side copper plate in Embodiment 1.

Embodiments of the invention

The present invention is further described in conjunction with the accompanying drawings and specific embodiments.

Embodiment 1: As shown in FIGS. 1 to 4, a crystallizer includes a leg 2, a left support 7, a right support 10, and a width adjusting device 1 fixed to the left support 7 and the right support 10. And the inner arc side water tank and copper plate assembly 8 and the outer arc side water tank and copper plate assembly 9, the narrow side copper plate 4 connected to the widening device 1, the narrow side foot roller 3 fixedly connected with the widening device 1, and the inner arc side water tank And a copper plate assembly 8 and a wide-side foot roller 5 connected to the outer arc side water tank and the copper plate assembly 9; the leg 2 is fixedly connected with the left support 7 and the right support 10, and functions to support the crystallizer after the lower line; the widening device 1 includes a guide rod 11, a guide rod 11 One end is connected to the narrow side back plate 12 fixed by the narrow side copper plate 4, and the other end is inserted into the sleeve 14 fixed on the narrow side water tank 13, and the lead screw 15 is disposed in the sleeve 14, and the adjustment device 1 further includes A screw transmission 16 provided with a brake 19 and a double nut preloading planetary ball screw nut 17; a double nut preloading planetary ball screw nut 17 is provided at one end of the lead screw 15 and passes through the end face of the lock bolt 18 and the guide rod 11 Connecting; the screw transmission 16 is connected to the other end of the lead screw 15; the brake 19 is a disc brake; thereby reducing the gap of the transmission chain, improving the positioning accuracy of the crystallizer, and adjusting the width of the device during the pouring process The self-locking torque is not reduced by the vibration of the crystallizer, and the precise self-locking of the widening device is realized to prevent the drift phenomenon during the pouring process.

The crystallizer is provided with a narrow-side copper plate sliding mechanism 6 including a sliding support 6-2 and a sliding block 6-1 slidably coupled to the sliding support 6-2; the sliding support 6-2 is fixed The arc side tank and the copper plate assembly 8 and the outer arc side tank and the top of the copper plate assembly 9; the sliding block 6-1 is fixed on the top of the widening device 1: the sliding portion of the sliding block 6-1 and the sliding support 6-2 It is elliptical; when the widening device 1 is in the process of widening, the sliding block 6-1 also slides on the sliding support 6-2; the two sides of the narrow-sided copper plate 4 are provided with a transition arc 4-1.

Claims

A crystallizer comprising a left support (7), a right support (10), a widening device (1) fixed to the left support (7) and the right support (10), and an inner arc side tank And a copper plate assembly (8) and an outer arc side water tank and a copper plate assembly (9), a narrow side copper plate (4) connected to the width adjusting device (1); the width adjusting device (1) includes a guiding rod (11) One end of the guiding rod (11) is connected to the narrow side back plate (12) fixed by the narrow side copper plate (4), and the other end penetrates into the sleeve (14) fixed on the narrow side water tank (13). a screw (15) is disposed in the sleeve (14), characterized in that: the width adjusting device (1) further comprises a screw transmission device (16) provided with a brake and a double nut preloading planetary ball screw a nut (17); the double nut preloading planetary ball screw nut (17) is disposed at one end of the lead screw (15) and connected to an end surface of the guide rod (11) by a lock bolt (18): The screw drive (16) is coupled to the other end of the lead screw (15).
The crystallizer according to claim 1, wherein the crystallizer is further provided with a narrow-side copper plate sliding mechanism (6), the narrow-side copper plate sliding mechanism (6) comprising a sliding support (6-2) and sliding Supporting (6-2) slidingly connected sliding block (6-1); said sliding support (6-2) is fixed to said inner arc side water tank and copper plate assembly (8) and outer arc side water tank and copper plate assembly (9) The top of the adjustment block (1) is fixed to the top of the adjustment device (1).
The crystallizer according to claim 2, wherein the sliding portions of the sliding block (6-1) connected to the sliding support (6-2) are elliptical.
A crystallizer according to claim 1, 2 or 3, characterized in that the sides of the narrow-sided copper plate (4) are provided with transition arcs (4-1).
A crystallizer according to claim 4, wherein said brake is a disc brake.