CN212443146U - Crystallizer copper plate - Google Patents

Abstract

The utility model provides a crystallizer copper treats processing chamfer copper by treating processing copper, first treating processing chamfer copper and second and constitutes. Different from the integrally formed chamfering crystallizer in the prior art, the first chamfering copper plate to be processed and the second chamfering copper plate to be processed of the crystallizer copper plate are fixedly connected to the surface to be processed of the copper plate to be processed through the solidification part so as to form the chamfering copper plate, and the two opposite long edges form a chamfer, so that the formed chamfering crystallizer can be maintained by replacing the chamfering copper plate, the integrally formed chamfering crystallizer is prevented from being replaced, and the production cost is effectively reduced; and meanwhile, the arc value of the chamfer is controlled to be not less than 10, and the height of the chamfer is controlled to be not less than 15 cm, so that the service life of the formed chamfer copper plate is ensured.

Description

Crystallizer copper plate

Technical Field

The utility model relates to a metal solidifies and continuous casting technical field, especially relates to crystallizer copper.

Background

The solidification process of the molten steel in the crystallizer is a process of transferring the heat of the molten steel to cooling water through the copper plate, and the heat transfer condition and the temperature field distribution of the copper plate have important influences on the yield of a continuous casting machine and the surface quality of a casting blank. It has been found that most of the surface defects of the cast strand occur in the mould, these defects being mostly related to insufficient rigidity of the mould, uneven cooling and the shape of the internal cavity.

In prior art chamfer crystallizers, such as the chamfer crystallizers disclosed in chinese patent application with publication number CN104209484B, the working surface of the narrow copper plate includes several transition curved surfaces, so as to form the chamfer of the corner, and compared with a right-angle crystallizer, the corner stress of the casting blank can be reduced by changing the heat transfer mode of the corner of the casting blank, thereby significantly reducing the corner defects of the casting blank.

However, the prior art chamfering mold has a complicated structure, can be repaired less times, has a shorter service life than a right-angle mold, and increases the production cost. In addition, different types of molds are suitable for processing different types of casting blanks, and compared with a right-angle mold, a chamfer mold is suitable for processing fewer types of casting blanks, so that the application range of the chamfer mold is greatly limited.

Therefore, there is a need to design a new mold copper plate to avoid the above problems in the prior art.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a crystallizer copper is in order to reduce the cost of production and be favorable to expanding the range of application of crystallizer.

In order to achieve the purpose, the crystallizer copper plate of the utility model consists of a copper plate to be processed, a first chamfering copper plate to be processed and a second chamfering copper plate to be processed; the copper plate to be processed comprises a surface to be processed, and the surface to be processed is formed by enclosing two opposite long sides and two opposite short sides; the first to-be-processed chamfering copper plate and the second to-be-processed chamfering copper plate are fixedly connected to the surface to be processed through a curing part to form chamfering copper plates, and the two opposite long sides form chamfers; the camber value of chamfer is not less than 10, the first chamfer copper plate of waiting to process with the chamfer height of second waiting to process the chamfer copper is not less than 15 centimetres either.

The utility model discloses a crystallizer copper's beneficial effect lies in: different from the integrally formed chamfering crystallizer in the prior art, the utility model discloses an among the crystallizer copper plate, first chamfer copper plate and second chamfer copper plate that wait to process all through solidification portion fixed connection in the surface of waiting to process to form the chamfer copper plate, and make two relative long sides form the chamfer, make the chamfering crystallizer that forms can carry out equipment maintenance through changing the chamfer copper plate, avoided the integrally formed chamfering crystallizer of change, effectively reduced manufacturing cost; the camber value of chamfer is controlled to be not less than 10, the first chamfer copper plate to be processed and the second chamfer copper plate to be processed are not lower than 15 cm in height, and the service life of the formed chamfer copper plate is guaranteed.

Preferably, the solidification part comprises a plurality of fastening pieces, and the first to-be-processed chamfering copper plate and the second to-be-processed chamfering copper plate are mechanically connected with the to-be-processed copper plate through the fastening pieces. The beneficial effects are that: and ensuring the bonding strength between the to-be-processed chamfer copper plate and the to-be-processed copper plate, thereby ensuring good service life.

Further preferably, the surface to be processed is provided with a plurality of threaded holes, each threaded hole comprises an internal thread, and part of the outer side wall of the fastener is provided with an external thread matched with the internal thread, so that the fastener is mechanically connected with the copper plate to be processed.

Further preferably, the surfaces of the first to-be-processed chamfering copper plate and the second to-be-processed chamfering copper plate are provided with a plurality of unthreaded holes, and the outer diameter of the fastening piece is matched with the inner diameter of each unthreaded hole so as to realize the mechanical connection between the fastening piece and the first to-be-processed chamfering copper plate and the second to-be-processed chamfering copper plate.

Further preferably, the solidification portion still includes the metallurgical bonding layer, the metallurgical bonding layer is located the fastener with wait to process the chamfer copper board first waiting to process the chamfer copper board with the second is waited to process the junction of arbitrary one in the chamfer copper board, in order to strengthen first waiting to process the chamfer copper board the second is waited to process the chamfer copper board and wait to process the bonding strength between the copper board.

Preferably, the fastening piece, the copper plate to be processed and the chamfering copper plate to be processed are all made of the same material.

Preferably, the copper plate to be processed comprises a back surface opposite to the surface to be processed, the back surface being provided with a plurality of channels to accommodate a cooling medium, a portion of the plurality of channels extending towards the chamfer. The beneficial effects are that: the cooling effect on the chamfered part is enhanced to improve the quality of the casting blank.

Preferably, the working surface of the chamfered copper plate has a parabolic taper.

Further preferably, the working surface of the chamfered copper plate comprises a surface hardened layer, and the thickness of the surface hardened layer is 300-600 microns.

Preferably, the copper plate to be processed is a right-angle copper plate.

Preferably, the arc value of the chamfer is 10-20, and the height of the chamfer is 15-23.5 mm.

Drawings

FIG. 1 is a top view of a prior art chamfer crystallizer;

FIG. 2 is a top view of a rectangular mold of the prior art;

FIG. 3a is a top view of a chamfering mold according to an embodiment of the present invention;

FIG. 3b is a schematic structural view of the first chamfer copper plate to be processed shown in FIG. 3 a;

FIG. 4a is a schematic view of an assembly structure of the second right-angle copper plate, the first chamfer copper plate to be processed and the second chamfer copper plate to be processed shown in FIG. 3 a;

fig. 4b is a schematic view of an assembly structure of another second right-angle copper plate and the first chamfer copper plate to be processed and the second chamfer copper plate to be processed shown in fig. 3a according to the embodiment of the present invention;

fig. 5 is a schematic view of an assembly structure of a part of the second right-angle copper plate and a part of the first chamfered copper plate to be processed shown in fig. 4.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention clearer, the drawings of the present invention are combined to clearly and completely describe the technical solutions in the embodiments of the present invention, and obviously, the described embodiments are some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention. Unless defined otherwise, technical or scientific terms used herein shall have the ordinary meaning as understood by one of ordinary skill in the art to which this invention belongs. As used herein, the word "comprising" and similar words are intended to mean that the element or item listed before the word covers the element or item listed after the word and its equivalents, but does not exclude other elements or items.

The utility model relates to a all kinds of crystallizers and all kinds of crystallizer copper all are applicable to slab continuous casting.

FIG. 1 is a top view of a prior art chamfer crystallizer. Fig. 2 is a top view of a rectangular mold of the prior art.

Referring to fig. 1 and 2, an inner cavity 11 of the overall chamfering mold 1 is formed with a corner 12, as compared with the right-angle mold 2.

In practical application, for treating certain steel grades with high requirements on a casting blank, by using the right-angle crystallizer 2, tensile stress easily exists at the intersection of adjacent right-angle copper plates, namely the first right-angle copper plate 21 and the second right-angle copper plate 22, and in the process of discharging the casting blank through the bottom of the right-angle crystallizer 2, the tensile stress action at the intersection of the first right-angle copper plate 21 and the second right-angle copper plate 22 enables the corners of the casting blank and the positions close to the corners to easily generate stress concentration, so that the casting blank has the defect of corner cracks.

Further, the reaction to the intersection of the first and second right- angle copper plates 21 and 22 and the position close to the intersection in the casting blank discharging process makes the right-angle position of the right-angle crystallizer 2 easy to wear, so that the quality of the casting blank is further influenced.

As is common knowledge in the art, with the integral chamfering mold 1, the temperature of the corners of the cast strand formed by the integral chamfering mold 1 can be higher than the high temperature embrittlement zone of the steel grade due to the presence of the corners 12 and the parameter adjustment of the corners 12, while eliminating stress and strain concentration at the corners.

However, although the problem of stress concentration in the corners of the integral chamfer mould 1 is less severe than in the right angle mould 2, wear of the inner walls of the integral chamfer mould 1 during the discharge of the cast strand is unavoidable. The inner cavity 11 of the integral chamfering crystallizer 1 is usually formed by integral processing, the manufacturing cost of the inner cavity is higher than that of the right-angle crystallizer 2, and once the inner cavity 11 is worn, a new chamfering crystallizer needs to be replaced, so that the application cost of the integral chamfering crystallizer 1 is greatly increased.

In order to solve the above problems in the prior art, the embodiment of the present invention provides a processing method for a crystallizer copper plate, which is beneficial to reducing the production cost and expanding the application range of the crystallizer.

The utility model discloses a processing method of crystallizer copper includes:

s0: providing a copper plate to be processed and a plurality of chamfering copper plates to be processed, wherein the copper plate to be processed comprises a surface to be processed, and the surface to be processed is surrounded by two opposite long sides and two opposite short sides;

s1: fixedly connecting the copper plate to be processed with the surface to be processed, and enabling two opposite long edges of the surface to be processed to form chamfers;

s2: sequentially carrying out curing treatment and hardening treatment on the copper plate obtained in the step S1 to obtain a chamfered copper plate;

s3: and removing part of the copper plate to be processed and chamfered, and then carrying out curing treatment and hardening treatment on the obtained copper plate to obtain the right-angle copper plate.

In the embodiment of the invention, through the fixed connection and the curing treatment, a fixed part is arranged between the copper plate to be processed and the chamfer copper plate to be processed, so that the bonding strength between the copper plate to be processed and the chamfer copper plate to be processed is enhanced.

The embodiment of the utility model provides an in, the camber value of chamfer is not less than 10, the chamfer height of chamfer processing copper is not less than 15 centimetres.

Different from the prior art method of preparing the chamfer crystallizer through the integrated molding, the embodiment of the utility model provides a processing method of crystallizer copper, through step S1 is original on the basis of waiting to process the copper, will wait to process chamfer copper fixed connection in wait to process the surface to be handled of copper, rethread solidification treatment with the hardening treatment is strengthened wait to process the chamfer copper with wait to process the bonding strength between the copper, make and form the life of chamfer copper can with wait to process the life of copper is equivalent to when reducing the generating cost and be favorable to extending the range of application of crystallizer.

In step S0 of some embodiments, the copper plate to be processed is a right-angle copper plate, which is any one or more copper plates constituting the inside wall of the right-angle crystallizer 2 shown in fig. 2.

The utility model discloses some embodiments in step S0, the right angle copper is the right angle copper that the working face did not take place wearing and tearing, perhaps takes place the right angle copper of different degrees wearing and tearing for the working face.

The working surface of the embodiment of the utility model is the surface of the crystallizer contacted with the casting blank.

In step S0 of some embodiments of the present invention, referring to fig. 2, the surface to be processed of the copper plate to be processed is a working surface of any one or more copper plates constituting the inside wall of the right-angle crystallizer 2.

In some embodiments of the present invention, the copper plate to be processed is the narrow-face copper plate of the right-angle crystallizer 2.

Fig. 3a is a top view of a chamfering mold according to an embodiment of the present invention. Fig. 3b is a schematic structural view of the first chamfer copper plate to be processed shown in fig. 3 a.

In step S1 of some embodiments of the present invention, referring to fig. 2 and 3a, the chamfering mold 3 of the embodiments of the present invention is formed in the right angle mold 2. The four to-be-processed chamfering copper plates including a first to-be-processed chamfering copper plate 31 and a second to-be-processed chamfering copper plate 32 are respectively arranged at four right-angle positions of the right-angle crystallizer 2, each to-be-processed chamfering copper plate is fixedly connected with each right-angle copper plate of the right-angle crystallizer 2, a to-be-processed surface of each right-angle copper plate is formed by enclosing two opposite long edges (not marked in the figure) and two opposite short edges (not marked in the figure), wherein the two opposite long edges (not marked in the figure) form a chamfer, and then four straight angle portions of the right-angle crystallizer 2 form chamfers.

Specifically, referring to fig. 3a and 3b, taking the first to-be-processed chamfered copper plate 31 as an example, the outer surface of the first to-be-processed chamfered copper plate 31 is surrounded by a top surface 311 and a bottom surface 312 which are parallel to each other, and a first side surface 313, a chamfered working surface 314 and a second side surface (not labeled in the figures) which are located between the top surface 311 and the bottom surface 312 and are sequentially connected. The first chamfer copper plate 31 to be processed is respectively arranged between the first right-angle copper plate 21 and the second right-angle copper plate 22, so that the first side surface 313 is attached to part of the working surface of the second right-angle copper plate 22 along the vertical direction, and the second side surface (not marked in the figure) is attached to part of the working surface of the first right-angle copper plate 21 along the vertical direction.

In step S1 of some embodiments, referring to fig. 2 and 3a, the first right-angle copper plate 21 of the right-angle crystallizer 2 is provided, and the first chamfer copper plate 31 to be processed and the second chamfer copper plate 32 to be processed are arranged in the first right-angle copper plate 21, so that the two opposite long edges (not marked in the figure) of the first right-angle copper plate 21 form chamfers.

The embodiment of the utility model provides an in, through right angle crystallizer 2 reforms transform and forms chamfer crystallizer 3, the original corollary equipment of right angle crystallizer 2, for example crystallizer backplate, backup pad and water tank etc. all can continue to use to manufacturing cost has been saved.

Fig. 4a is a schematic view of the assembly structure of the second right-angle copper plate, the first chamfer copper plate to be processed and the second chamfer copper plate to be processed shown in fig. 3 a. Fig. 4b is another second right-angle copper plate of the embodiment of the present invention and the first chamfer copper plate to be processed and the second chamfer copper plate to be processed shown in fig. 3a are assembled together.

The utility model discloses some embodiments, refer to fig. 3b and fig. 4a, the first chamfer camber value of waiting to process chamfer copper 31 is 10-20, and chamfer height H is 15-23.5 millimeters to be favorable to eliminating first right angle copper 21 with the tensile stress that second right angle copper 22 formed that intersects improves the two-dimensional heat transfer of casting blank simultaneously, the transversal crack control of specially adapted medium-thickness slab bight.

Specifically, the chamfer working surface 314 is arc-shaped, and the arc values of the arc chamfers formed by the chamfer working surface 314 and the top surface 311 and the bottom surface 312 are both 10 to 20.

Further, referring to fig. 4a, the first to-be-processed chamfering copper plate 31 and the second to-be-processed chamfering copper plate 32 have the same structure, and are mirror images of each other with respect to the axial direction of the second right-angle copper plate 22.

In some embodiments of the present invention, referring to fig. 2 and 3a, four chamfer copper plates to be processed formed in the right angle mold 2 have the same structure.

In some embodiments of the present invention, the top surface 311 and the vertical distance between the bottom surfaces 312 are equivalent to the vertical depth of the inner cavity 11 of the right angle crystallizer 2, so as to be convenient for the chamfer copper plate to be processed to be arranged in the right angle crystallizer 2.

In some embodiments of the present invention, the copper plate to be processed includes a back surface opposite to the surface to be processed.

Specifically, referring to fig. 4a, taking the second right-angle copper plate 22 as an example, the surface 41 to be processed of the second right-angle copper plate 22 is provided with the first chamfer copper plate 31 to be processed and the second chamfer copper plate 32 to be processed, and the back surface 42 opposite to the surface 41 to be processed is provided with a plurality of channels 43 for accommodating a cooling medium.

In some embodiments of the present invention, the cooling medium is cooling water.

In some embodiments, referring to fig. 4b, after step S3, to being close to first waiting to process chamfer copper plate 31 with two of second waiting to process chamfer copper plate 32 the channel 43 extends to process towards first waiting to process chamfer copper plate 31 with the chamfer angle department of second waiting to process chamfer copper plate 32 extends to strengthen the cooling effect to the chamfer part, with the quality that improves the casting blank.

In some embodiments of the utility model, wait to process the chamfer copper with the pending copper comprises same material.

In some embodiments of the present invention, the fixing portion includes a plurality of fasteners.

The utility model discloses in some embodiments, the fixed part still includes the metallurgical bonding layer, the metallurgical bonding layer is located the fastener with wait to process the chamfer copper first wait to process the chamfer copper with the second is waited to process the junction of arbitrary one in the chamfer copper, in order to strengthen first wait to process the chamfer copper the second wait to process the chamfer copper with wait to process the bonding strength between the copper.

The utility model discloses some embodiments in step S1, wait to process the chamfer copper with the pending copper passes through the fastener and realizes fixed connection.

Fig. 5 is a schematic view of an assembly structure of a part of the second right-angle copper plate and a part of the first chamfered copper plate to be processed shown in fig. 4 a.

Referring to fig. 4a and 5, taking the first to-be-processed chamfered copper plate 31 and the second right-angle copper plate 22 as an example, the to-be-processed surfaces 41 of the first to-be-processed chamfered copper plate 31 and the second right-angle copper plate 22 are fixedly connected by a plurality of fasteners 51 to strengthen the bonding strength between the first to-be-processed chamfered copper plate 31 and the to-be-processed surfaces 41.

The utility model discloses in some embodiments, second right angle copper 22 with a plurality of screw holes have been seted up on the first surface of waiting to process chamfer copper 31 and laminating mutually, the screw hole has the internal thread, first waiting to process chamfer copper 31 with the surface of second right angle copper 22 laminating mutually seted up with the unthreaded hole that the screw hole corresponds, fastener 51 partly seted up with the external screw thread of internal thread looks adaptation, the external diameter of another part with the internal diameter of unthreaded hole suits. After one part of the fastening piece 51 is arranged on the second right-angle copper plate 22 through the internal thread and the external thread, the other part is matched with the unthreaded hole, so that the second right-angle copper plate 22 is attached to the first chamfer copper plate 31 to be processed.

Specifically, the fastening member 5 is a bolt to realize bolt connection.

Further, the joint of the fastener 51 and the first to-be-processed chamfered copper plate 31 and the second right-angle copper plate 22 is subjected to welding treatment to strengthen the joint strength of the second right-angle copper plate 22 and the first to-be-processed chamfered copper plate 31.

Further, after the welding treatment is finished, the working surface of the first chamfer copper plate 31 to be processed is polished to ensure the surface roughness.

The utility model discloses in some concrete embodiments, the fastener wait to process the copper with wait to process the chamfer copper and constitute by same material.

The utility model discloses in some embodiments, the fastener wait to process the copper and the component material of chamfer copper is chromium pickaxe copper alloy.

In step S2 of some embodiments, the temperature of curing is 550-580 degrees centigrade, the pressure is 0.2 megapascal, the time is not less than 5 hours, in order to be favorable to improving the chamfer copper plate to be processed and the bonding strength between the copper plates to be processed, in order to improve the service life of the chamfer crystallizer 3.

In step S3 of some embodiments of the present invention, the hardening process includes any one of electroplating and spraying.

In some embodiments, the spraying comprises thermal spraying.

Specifically, in embodiment 1 of the utility model, refer to fig. 2 and fig. 3a, after the solidification treatment, it is right to include first waiting to process chamfer copper 31 with four of the second waiting to process chamfer copper 32 wait to process the chamfer copper with after the new inner chamber wall that the inner chamber wall of right angle crystallizer 2 formed cleaned, it is right to use supersonic flame spraying equipment new inner chamber wall goes on thermal spraying treatment to form the surface hardening layer.

More specifically, the nozzle of the flame spraying equipment is perpendicular to the wall of the new inner cavity, the spraying distance is controlled to be 360-400 mm, the flame spraying equipment adopts oxygen as fuel gas, argon as carrier gas, the flow rate of the oxygen is controlled to be 1800-2000 cubic feet/hour, the flow rate of the argon is controlled to be 20-25 cubic feet/hour, and the thickness of the formed surface hardening layer is 300-600 microns.

The utility model discloses in some embodiments, after step S2 was accomplished, get rid of the part wait to process the chamfer copper in order to form another surface of treating, be convenient for through in time changing wearing and tearing wait to process the chamfer copper in order to form the new copper that is applicable to different application scenarios to reduction in production cost.

The utility model discloses in some embodiments, use laser cutting method to get rid of the part wait to process the chamfer copper to pinpoint the cutting position, in order to be favorable to not destroying and pass through the solidification layer that the solidification was handled and is formed.

The utility model discloses some embodiments, another surface to be handled is located cured layer with between the case hardening layer to be favorable to not destroying and pass through cured layer, with the assurance wait to process the chamfer copper with wait to process the bonding strength of copper.

Specifically, referring to fig. 5, taking the joint of the second right-angle copper plate 22 and the first chamfer copper plate 31 to be processed as an example, after the plurality of fastening members 51 are fixedly connected to the joint of the second right-angle copper plate 22 and the first chamfer copper plate 31 to be processed, the top of the plurality of fastening members 51 form a first reference line 52, since the welding process is subsequently performed on the joint of the fastening piece 51 and the first to-be-processed chamfered copper plate 31 and the second right-angle copper plate 22, and further subjected to a curing process to effect a metallurgical bond, in order to avoid damaging a bonding layer formed by the metallurgical bond during cutting, forming a second reference line 53 at a position far from the joint of the second right-angle copper plate 22 and the first to-be-processed chamfered copper plate 31 with the first reference line 52 as a reference, thereby controlling the cut surface formed by the laser cutting method not to be lower than the second reference line 53.

In particular, the top of the fastener 51 is at a minimum vertical distance of 3-6 mm from the other surface to be treated.

In some embodiments of the present invention, referring to fig. 5, a plurality of the fastening members 51 are spaced from the second right-angle copper plate 22 and the vertical distance of the joint of the first to-be-processed chamfered copper plate 31 is the same, and the vertical distance between the first reference line 52 and the second reference line 53 is 3 to 6 mm.

In some embodiments of the present invention, the distance is included in the fastening member 51, the second right-angle copper plate 22 and the fastening member with the largest vertical distance at the joint of the first to-be-processed chamfer copper plate 31 are provided, and the top of the fastening member is parallel to the reference line at the joint of the second right-angle copper plate 22 and the first to-be-processed chamfer copper plate 31 is the first reference line.

The utility model discloses in some embodiments, after another surface to be processed forms, with another chamfer copper fixed connection of waiting to process in after another surface to be processed, carry out step S1 with step S2 to obtain new chamfer copper to in time change the chamfer copper of wearing and tearing, thereby reduction in production cost.

The advantageous effects of the method for processing a mold copper plate according to the present invention will be described below with reference to more specific examples.

In the more specific embodiment of the present invention, the integral chamfering crystallizer 1 is made of chromium pickaxe copper alloy through integral machining and forming as shown in fig. 1. The steel passing amount is based on the statistics of narrow-surface copper plates, the steel passing amount of a new product of the integral chamfering crystallizer 1 before repairable defects do not appear is 1.3 ten thousand tons, the frequency of the repairable defects appears is 3 times, and the repaired steel passing amount of the integral chamfering crystallizer 1 after repair is 0.8 ten thousand tons; the ton steel cost is 1.783 yuan in combination with the price and repair cost statistics of the integral chamfering crystallizer 1. After the integral chamfering crystallizer 1 is repaired for 3 times, the defect which appears again is the irreparable defect, namely the integral chamfering crystallizer can not be used again. The method for repairing repairable defects and the statistics of ton steel cost are well known to those skilled in the art and will not be described herein.

The right-angle mold 2 shown in fig. 2 has the same composition, wall thickness and conicity as the integral chamfer mold 1. The steel passing amount is based on the statistics of narrow-face copper plates of the right-angle crystallizer 2, the right-angle crystallizer 2 can be repaired for 6 times to eliminate repairable defects, the steel passing amount of a new product before repairable defects do not appear is 2 ten thousand tons, and the steel passing amount after 6 times of repair is 1.8 ten thousand tons; the cost per ton of steel, combined with the price and repair costs of the right angle crystallizer 2, is 0.234 yuan.

The chamfering crystallizer 3 shown in fig. 3 obtained by the processing method of the crystallizer copper plate according to the embodiment of the present invention has the same composition material, structure and size as the integral chamfering crystallizer 1. The steel passing amount is based on the statistics of narrow-face copper plates of the chamfering crystallizer 3, the chamfering crystallizer 3 can be repaired for 6 times to eliminate repairable defects, the steel passing amount of a new product before repairable defects do not appear is 1.8 ten thousand tons, and the steel passing amount after 6 times of repair is 1.5 ten thousand tons; the ton steel cost is 0.407 yuan by combining the price of the chamfering crystallizer 3 and the repair cost statistics.

In summary, for the chamfer crystallizer 3, the steel passing amount of the new product is higher than that of the integral chamfer crystallizer 1 and is close to that of the right-angle crystallizer 2; the repairable times are equivalent to those of the right-angle crystallizer 2 and are twice of those of the integral chamfering crystallizer 1; the amount of repaired steel is increased by nearly 90% compared to the overall chamfer crystallizer 1 and is reduced by only about 17% compared to the amount of repaired steel of the right angle crystallizer 2.

The ton steel cost of the chamfer crystallizer 3 is reduced by 77% compared with that of the integral chamfer crystallizer 1, and the cost can be saved by at least 248 ten thousand yuan if the steel is counted by 180 ten thousand tons per year; although the cost per ton of steel of the chamfer crystallizer 3 is higher than that of the right-angle chamfer crystallizer 2, the chamfer crystallizer 3 can treat casting blank steel types which cannot be treated by the right-angle chamfer crystallizer 2, particularly special steel casting blanks with high quality control requirements, and the selling price of the casting blanks is obviously better than that of common casting blanks; and according to the production requirement, the chamfering crystallizer 3 can be reduced into the right-angle crystallizer 2 by the processing method of the application, so that the flexibility of the production line is improved.

In summary, the processing method of the crystallizer copper plate provided by the embodiment of the invention enables the service life of the formed chamfering copper plate to be equivalent to that of the copper plate to be processed, thereby reducing the production cost; when the right-angle copper plate is required to be applied, the right-angle copper plate is formed by removing part of the chamfer copper plate to be processed and then carrying out curing treatment and hardening treatment, and the application range of the crystallizer is favorably expanded.

Although the embodiments of the present invention have been described in detail hereinabove, it is apparent to those skilled in the art that various modifications and variations can be made to these embodiments. However, it is to be understood that such modifications and variations are within the scope and spirit of the present invention as set forth in the appended claims. Moreover, the invention as described herein is capable of other embodiments and of being practiced or of being carried out in various ways.

Claims (11)

1. A crystallizer copper plate is characterized by comprising a copper plate to be processed, a first chamfer copper plate to be processed and a second chamfer copper plate to be processed;

the copper plate to be processed comprises a surface to be processed, and the surface to be processed is formed by enclosing two opposite long sides and two opposite short sides;

the first to-be-processed chamfering copper plate and the second to-be-processed chamfering copper plate are fixedly connected to the surface to be processed through a curing part to form chamfering copper plates, and the two opposite long sides form chamfers;

the camber value of chamfer is not less than 10, the first chamfer copper plate of waiting to process with the chamfer height of second waiting to process the chamfer copper is not less than 15 centimetres either.

2. The crystallizer copper plate as claimed in claim 1, wherein said solidified portion comprises a plurality of fastening members by which said first and second copper plates to be machined are mechanically connected to said copper plate to be machined.

3. The crystallizer copper plate as claimed in claim 2, characterized in that said surface to be treated is provided with threaded holes comprising internal threads, part of the external side wall of said fastening element being provided with external threads adapted to said internal threads to enable mechanical connection of said fastening element to said copper plate to be processed.

4. The crystallizer copper plate as claimed in claim 3, wherein the surfaces of said first and second copper plates to be machined are provided with a plurality of smooth holes, and the outer diameter of part of said fasteners is adapted to the inner diameter of said smooth holes to achieve the mechanical connection of said fasteners to said first and second copper plates to be machined.

5. The mold copper plate as claimed in claim 2, wherein the solidified portion further comprises a metallurgical bonding layer at a junction of the fastening member and any one of the copper chamfer plate to be processed, the first copper chamfer plate to be processed and the second copper chamfer plate to be processed to reinforce the bonding strength between the first copper chamfer plate to be processed, the second copper chamfer plate to be processed and the copper chamfer plate to be processed.

6. The crystallizer copper plate as claimed in claim 2, characterized in that said fasteners, said copper plate to be machined and said copper plate to be chamfered are all made of the same material.

7. Copper plate for crystallizers according to claim 1, characterized in that it comprises a rear face opposite to the surface to be treated, said rear face being provided with a plurality of channels to contain a cooling medium, some of said plurality of channels extending towards said chamfers.

8. The crystallizer copper plate as claimed in claim 1, characterized in that the working surface of said chamfered copper plate has a parabolic taper.

9. The mold copper plate as claimed in claim 8, wherein the working surface of the chamfered copper plate comprises a surface hardened layer having a thickness of 300-600 μm.

10. Crystallizer copper plate as claimed in claim 1, characterized in that said copper plate to be worked is a right-angle copper plate.

11. The crystallizer copper plate as claimed in claim 1, characterized in that said chamfers have a camber value of 10-20 and a height of 15-23.5 mm.

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