CN114178493B - Heavy H-shaped steel crystallizer and design method - Google Patents
Heavy H-shaped steel crystallizer and design method Download PDFInfo
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- CN114178493B CN114178493B CN202111446881.6A CN202111446881A CN114178493B CN 114178493 B CN114178493 B CN 114178493B CN 202111446881 A CN202111446881 A CN 202111446881A CN 114178493 B CN114178493 B CN 114178493B
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D11/00—Continuous casting of metals, i.e. casting in indefinite lengths
- B22D11/009—Continuous casting of metals, i.e. casting in indefinite lengths of work of special cross-section, e.g. I-beams, U-profiles
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D11/00—Continuous casting of metals, i.e. casting in indefinite lengths
- B22D11/04—Continuous casting of metals, i.e. casting in indefinite lengths into open-ended moulds
- B22D11/0406—Moulds with special profile
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D11/00—Continuous casting of metals, i.e. casting in indefinite lengths
- B22D11/04—Continuous casting of metals, i.e. casting in indefinite lengths into open-ended moulds
- B22D11/057—Manufacturing or calibrating the moulds
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
- Y02P70/10—Greenhouse gas [GHG] capture, material saving, heat recovery or other energy efficient measures, e.g. motor control, characterised by manufacturing processes, e.g. for rolling metal or metal working
Abstract
The invention discloses a heavy H-shaped steel crystallizer and a design method thereof, wherein the heavy H-shaped steel crystallizer comprises a cavity which is arranged in a penetrating way, the cavity comprises a web inner arc section, a web outer arc section, a flange inner arc section, a flange outer arc section and a flange edge section, the web inner arc section and the web outer arc section form a web cavity, the flange inner arc section, the flange outer arc section and the flange edge section form a flange cavity, the end part of the flange inner arc section is connected with the end part of the web inner arc section, the end part of the flange outer arc section is connected with the end part of the web outer arc section, the two ends of the flange edge section are respectively connected with the flange inner arc section and the flange outer arc section, and the two flange cavities are symmetrically arranged at the two ends of the web cavity so as to form a cavity with an H-shaped cross section; according to the invention, the cavity wall is set to be a continuous smooth reverse taper plane, so that the cooling consistency is ensured, the casting blank is ensured to uniformly grow, the toughness of the blank shell is high, the quality defects such as microcracks of the casting blank are greatly reduced, the yield of the casting blank is improved, the local supply is realized, the spare part cost is reduced, and the supply period is shortened.
Description
Technical Field
The invention relates to the technical field of steel crystallizer equipment, in particular to a heavy H-shaped steel crystallizer and a design method thereof.
Background
The heavy H-shaped steel crystallizer is a continuous casting and rolling production line with the largest section specification in China, and key components, namely a heavy H-shaped steel special-shaped blank crystallizer copper plate, are all purchased from abroad. The inner cavity of the crystallizer is in an inverted splayed shape, an inner arc plate, an outer arc plate and two narrow plates are spliced into an H shape, molten steel is injected from an upper port and is cooled by circulating water in the crystallizer, so that a blank shell is formed and pulled out from a lower port.
The defects of more cracks, deviation, bending, frequent steel leakage and the like of a casting blank commonly occur in the casting process of the parabolic reverse taper of the original design of the crystallizer, so that the service life of the crystallizer is directly reduced, the production line is not smooth, and the yield of the casting blank is not high. In addition, import spare parts are expensive and the supply period is long.
In view of the above drawbacks, the present inventors have finally achieved the present invention through long-time studies and practices.
Disclosure of Invention
In order to solve the technical defects, the invention adopts the technical scheme that the heavy H-shaped steel crystallizer comprises a cavity which is arranged in a penetrating way, wherein the cavity comprises a web inner arc section, a web outer arc section, a flange inner arc section, a flange outer arc section and a flange edge section, the web inner arc section and the web outer arc section form a web cavity, the flange inner arc section, the flange outer arc section and the flange edge section form a flange cavity, the end part of the flange inner arc section is connected with the end part of the web inner arc section, the end part of the flange outer arc section is connected with the end part of the web outer arc section, the two ends of the flange edge section are respectively connected with the flange inner arc section and the flange outer arc section, and the two flange cavities are symmetrically arranged at the two ends of the web cavity so as to form the cavity with an H-shaped cross section;
the inner side of the cavity is provided with a plurality of equal-width inverted taper sections which are sequentially arranged along the extending direction of the cavity, each inverted taper section comprises a web inner arc taper section arranged on a web inner arc section, a web outer arc taper section arranged on a web outer arc section, a flange inner arc taper section arranged on a flange inner arc section, a flange outer arc taper section arranged on a flange outer arc section and a flange edge taper section arranged on a flange edge section, wherein the web inner arc taper section, the web outer arc taper section, the flange inner arc taper section and the flange outer arc taper section are all arranged to be planes, and arc end faces similar to circular arcs are formed on the flange outer arc sections by arranging the continuously connected inverted taper sections with different inclinations.
Preferably, the end of the flange inner arc section is connected with the end of the web inner arc section through an inclined first transition section, and the end of the flange outer arc section is connected with the end of the web outer arc section through an inclined second transition section.
Preferably, the first transition section and the web inner arc section, the second transition section and the web outer arc section are in arc transition through a first arc section, the radiuses of the first arc sections are the same, and the radiuses of the first arc sections are kept consistent along the extending direction of the cavity.
Preferably, the first transition section and the flange inner arc section, the second transition section and the flange outer arc section are in arc transition through a second arc section, the radiuses of the second arc sections are the same, and the radiuses of the second arc sections are kept consistent along the extending direction of the cavity.
Preferably, the width of the back taper section is set to be 100mm.
Preferably, a design method of a cavity in the heavy H-shaped steel crystallizer comprises the following steps:
s1, setting the size of a lower cavity opening according to the size of an H-shaped casting blank cold blank, wherein the size of the lower cavity opening comprises a web plate size, a flange size, a width size and a corner size;
s2, designing the radius of the outer arc end surface of the flange based on the size of the lower cavity opening, designing the radius of the inner arc end surface of the flange based on the radius of the outer arc end surface of the flange, and designing each reverse taper of the inner arc taper section of the flange and the outer arc taper section of the flange through the radius of the outer arc end surface of the flange and the radius of the inner arc end surface of the flange;
s3, designing the radius of the web inner arc end surface and the radius of the web outer arc end surface based on the inverted taper of the flange inner arc taper section and the flange outer arc taper section and the size of the lower cavity mouth, and designing the inverted taper of the web inner arc taper section and the web outer arc taper section based on the radius of the web inner arc end surface and the radius of the web outer arc end surface;
s4, designing the inclination angles of the flat end surfaces of the two flange edges in the width direction based on the back taper of the web inner arc taper section and the web outer arc taper section, and further designing the back taper of the flange edge taper sections.
Compared with the prior art, the invention has the beneficial effects that: the invention ensures the uniform cooling by setting the cavity wall as a continuous smooth reverse taper plane, ensures the uniform growth of casting blanks, has high toughness of blank shells, greatly reduces quality defects such as microcracks of the casting blanks, improves the yield of the casting blanks, realizes local delivery, reduces spare part cost and shortens delivery period; 2, the arc correction device is beneficial to simulating the uniform growth of casting blanks in a mold cavity of a crystallizer, increasing the toughness of blank shells, greatly reducing the steel leakage probability of the casting blanks, improving the yield of the casting blanks, greatly reducing the spare part cost, greatly shortening the supply period, effectively saving time, improving the production efficiency, reducing the labor intensity and increasing the safety.
Drawings
Fig. 1 is a structural view of the H-shaped cast slab cold slab;
FIG. 2 is a structural view of the mold cavity;
FIG. 3 is a cross-sectional view of the flange cavity;
FIG. 4 is a structural cross-sectional view of the web cavity;
FIG. 5 is a cross-sectional view of the flange edge section;
FIG. 6 is a comparative schematic diagram of an optimally designed reverse taper;
FIG. 7 is a structural view of the arc calibrating device;
fig. 8 is an arc calibrating schematic diagram of the arc calibrating device.
The figures represent the numbers:
1-an inner arc section of a web plate; 2-web outer arc segments; 3-flange inner arc section; 4-flange outer arc section; 5-flange edge segments; 6-a first arc section; 7-a first arc section; 11-web cavity; 12-flange cavity; 13-curve extension; 21-outer arc side flange foot rollers; 22-outer arc side web foot rollers; 23-inner arc side web foot rollers; 24-inner arc side flange foot rollers; 31-a first detection plate; 32-a second detection plate; 33-reinforcing rib columns; 34-upper detection section; 35-middle weight reduction section; 36-lower detection section.
Detailed Description
The above and further technical features and advantages of the present invention are described in more detail below with reference to the accompanying drawings.
Example 1
As shown in fig. 1 and 2, fig. 1 is a structural view of the H-shaped casting blank cold blank; fig. 2 is a structural view of the cavity.
The heavy H-shaped steel crystallizer comprises a cavity which is arranged in a penetrating mode, wherein the cavity comprises a web inner arc section 1, a web outer arc section 2, a flange inner arc section 3, a flange outer arc section 4 and a flange edge section 5, the web inner arc section 1 and the web outer arc section 2 form a web cavity 11, the flange inner arc section 3, the flange outer arc section 4 and the flange edge section 5 form a flange cavity 12, the end part of the flange inner arc section 3 is connected with the end part of the web inner arc section 1, the end part of the flange outer arc section 4 is connected with the end part of the web outer arc section 2, the two ends of the flange edge section 5 are respectively connected with the flange inner arc section 3 and the flange outer arc section 4, and the two flange cavities 12 are symmetrically arranged at two ends of the web cavity 11 so as to form the cavity with an H-shaped cross section.
Generally, the end of the flange inner arc section 3 is connected with the end of the web inner arc section 1 through an inclined first transition section, the end of the flange outer arc section 4 is connected with the end of the web outer arc section 2 through an inclined second transition section, the first transition section is in circular arc transition with the web inner arc section 1, the second transition section is in circular arc transition with the web outer arc section 2 through a first circular arc section 6, the radiuses of the first circular arc section 6 are the same, and the radiuses of the first circular arc section 6 are kept consistent along the extending direction of the cavity; the first transition section and the flange inner arc section 3, the second transition section and the flange outer arc section 4 are in arc transition through a second arc section 7, the radiuses of the second arc section 7 are the same, and the radiuses of the second arc section 7 are kept consistent along the extending direction of the cavity.
The radius unification is carried out on the variable diameter size of the large R angle (namely the R angle in the figure 1 corresponding to the first arc section 6) of the mould cavity in the prior design, so that the movement resistance of the casting blank in the mould is reduced; the radius unification is carried out on the small r angle (namely the r angle in the figure 1 corresponding to the second arc section 7) variable diameter size of the mould cavity designed in the prior art, which is beneficial to reducing the movement resistance of the casting blank in the mould.
As shown in fig. 3, 4 and 5, fig. 3 is a structural cross-sectional view of the flange cavity; FIG. 4 is a structural cross-sectional view of the web cavity; fig. 5 is a structural cross-sectional view of the flange edge section.
A plurality of reverse taper sections which are arranged at equal widths are arranged in the cavity along the extending direction of the cavity, each reverse taper section comprises a web inner arc taper section arranged on the web inner arc section 1, a web outer arc taper section arranged on the web outer arc section 2, a flange inner arc taper section arranged on the flange inner arc section 3, a flange outer arc taper section arranged on the flange outer arc section 4 and a flange edge taper section arranged on the flange edge section 5, the web inner arc taper section, the web outer arc taper section, the flange inner arc taper section, the flange outer arc taper section and the flange edge taper section are all arranged to be planes, and through setting up the continuously connected reverse taper sections with different inclinations, arc-like arc-shaped end faces are formed on the web inner arc section 1, the web outer arc section 2, the flange inner arc section 3 and the flange outer arc section 4, inclined flat end faces are formed on the flange edge section 5, so that the size requirements of casting blanks are met, uniform stirring of casting powder in a liquid level area is facilitated, the surface coating of a crystallizer is better protected, and the coating falling off in the liquid level area is prevented.
The reverse taper is closer to smoothness, so that the condition of larger size of the middle part of the parabolic reverse taper crystallizer and excessive steel pocket in the existing design is eliminated, the uniform cooling is ensured, the uniform growth of casting blanks is facilitated, the toughness of blank shells is improved, the quality defects of microcracks and the like of the casting blanks are greatly reduced, the yield of the casting blanks is improved, the spare part cost is greatly reduced, the supply period is greatly shortened, the time is effectively saved, the production efficiency is improved, the labor intensity is reduced, and the safety is improved.
Preferably, the width of the back taper section is set to be 100mm.
Example two
The design method of the cavity in the heavy H-shaped steel crystallizer comprises the following steps:
s1, setting the size of a lower cavity opening according to the size of an H-shaped casting blank cold blank, wherein the size of the lower cavity opening comprises a web plate size, a flange size, a width size and a corner size;
s2, designing the radius of the outer arc end surface of the flange based on the size of the lower cavity opening, designing the radius of the inner arc end surface of the flange based on the radius of the outer arc end surface of the flange, and designing each reverse taper of the inner arc taper section of the flange and the outer arc taper section of the flange through the radius of the outer arc end surface of the flange and the radius of the inner arc end surface of the flange;
s3, designing the radius of the web inner arc end surface and the radius of the web outer arc end surface based on the inverted taper of the flange inner arc taper section and the flange outer arc taper section and the size of the lower cavity mouth, and designing the inverted taper of the web inner arc taper section and the web outer arc taper section based on the radius of the web inner arc end surface and the radius of the web outer arc end surface;
s4, designing the inclination angles of the flat end surfaces of the two flange edges in the width direction based on the back taper of the web inner arc taper section and the web outer arc taper section, and further designing the back taper of the flange edge taper sections.
FIG. 6 is a schematic diagram showing the comparison of the reverse taper of the optimal design;
specifically, the determining process of the web outer arc radius is as shown in the following fig. 4, wherein values are equally divided at intervals of 100mm along the casting radius, a plurality of straight line segments are smoothly connected, three points from the highest point to the middle point to the lowest point are used as reference arcs, values are simultaneously taken at the position with the interval width of 100mm, and the circle center coordinate value of the outer arc radius is determined.
The determination process of the inner arc radius of the web plate is that, as shown in the following figure 4, a horizontal line is made at the position of 100mm of the determined outer arc radius of the web plate, the length is taken according to the inverted cone degree of the optimal design as shown in the figure 8, and the point position mark is made. And similarly, performing three-point arc forming on the highest point, the middle point and the lowest point to serve as a reference arc, and simultaneously taking a value at a position with the distance width of 100mm and determining the circle center coordinate value of the radius of the outer arc.
The determination process of the outer arc radius of the flange is as shown in the following figure 3, the values are equally divided at intervals of 100mm along the casting radius, a plurality of straight line segments are smoothly connected, three points from the highest point to the middle point to the lowest point are used as reference arcs, the value is taken at the position with the interval width of 100mm, and the circle center coordinate value of the outer arc radius is determined.
The determination process of the flange inner arc radius is that, as shown in the following figure 3, a horizontal line is made at the position of the determined flange outer arc radius distance of 100mm, the length is taken according to the inverted cone of the optimal design, and the point position mark is made. And similarly, performing three-point arc forming on the highest point, the middle point and the lowest point to serve as a reference arc, and simultaneously taking a value at a position with the distance width of 100mm and determining the circle center coordinate value of the radius of the outer arc.
Example III
Based on the special structural cavity of the embodiment, the invention also provides an arc calibrating device for detecting the relative positions of the web inner arc section 1, the web outer arc section 2, the flange inner arc section 3, the flange outer arc section 4 radian, the flange edge section 5 gradient and the foot roller.
Specifically, a curve extension section 13 is arranged at the position of an upper cavity opening of the cavity along the extending direction of the cavity, the cross section of the curve extension section 13 is of an H shape corresponding to the cross section of the cavity, a web inner arc detection section, a web outer arc detection section, a flange inner arc detection section, a flange outer arc detection section and a flange edge detection section are arranged on the curve extension section 13, the web inner arc detection section is formed by extending the web inner arc section 1, the arc radius of the web inner arc detection section is identical to the arc radius of the web inner arc section 1, the web outer arc detection section is formed by extending the web outer arc section 2, and the arc radius of the web outer arc detection section is identical to the arc radius of the web outer arc section 2; the flange inner arc detection section is formed by extending the flange inner arc section 3, and the arc radius of the flange inner arc detection section is the same as the arc radius of the flange inner arc section 3; the flange outer arc detection section is formed by extending the flange outer arc section 4, and the arc radius of the flange outer arc detection section is the same as the arc radius of the flange outer arc section 4; the flange edge detection section is formed by extending the flange edge section 5, and the inclination angle of the flange edge detection section is the same as the inclination angle of the flange edge section 5.
Preferably, a foot roller is arranged below the lower cavity opening, and comprises an outer arc side flange foot roller 21 corresponding to the flange outer arc section 4, an outer arc side web foot roller 22 corresponding to the web outer arc section 2, an inner arc side web foot roller 23 corresponding to the web inner arc section 1 and an inner arc side flange foot roller 24 corresponding to the flange inner arc section 3, and the foot roller plays a role of 'holding' a casting blank to walk, so that the working surface of the mold cavity is effectively protected from being scratched.
As shown in fig. 7, fig. 7 is a structural view of the arc calibrating device; the arc correcting device comprises a first detection plate 31, a second detection plate 32 and reinforcing rib columns 33, wherein the first detection plate 31 and the second detection plate 32 are arranged in parallel, a plurality of reinforcing rib columns 33 are arranged between the first detection plate 31 and the second detection plate 32, and the first detection plate 31 and the second detection plate 32 are fixedly connected through the reinforcing rib columns 33.
Specifically, the first detection plate 31 and the second detection plate 32 each include an upper detection end face, a lower detection end face, an outer detection end face and an inner connection face, the end portions of the reinforcing rib columns 33 are connected with the inner connection faces, the upper detection end faces and the lower detection end faces are all arc faces, the arc radii of the upper detection end faces of the first detection plate 31 and the second detection plate 32 are the same, the arc radii of the lower detection end faces of the first detection plate 31 and the second detection plate 32 are the same, and the outer detection end faces of the first detection plate 31 and the second detection plate 32 are inclined faces.
The upper detection end face and the lower detection end face are arranged up and down correspondingly, and the outer detection end face and the inner connection face are arranged inside and outside correspondingly.
The radius of the arc of the upper detection end face is the same as that of the web outer arc section 2 or the flange outer arc section 4, the radius of the arc of the lower detection end face is the same as that of the web inner arc section 1 or the flange inner arc section 3, and the inclination angles of the outer detection end faces of the first detection plate 31 and the second detection plate 32 are the same as those of the flange edge sections 5 respectively.
Preferably, the first detecting plate 31 and the second detecting plate 32 each include an upper detecting section 34, a middle weight-reducing section 35 and a lower detecting section 36, the upper detecting section 34 is connected with the lower detecting section 36 through the middle weight-reducing section 35, the upper detecting section 34 is arranged corresponding to the curve extending section 13, one end of the lower detecting section 36, which is close to the middle weight-reducing section 35, is arranged corresponding to the lower cavity opening, and one end of the lower detecting section 36, which is far away from the middle weight-reducing section 35, is arranged corresponding to the foot roller.
The first detection plate 31 and the second detection plate 32 are thinned to form the middle weight-reducing section 35, so that the contact surface is reduced, and the upper opening and the lower opening are effectively contacted to obtain more accurate detection data.
Through the design into biplate formula increase measurement width, 4 muscle posts of equidistant welding in the centre, can improve its rigidity like this, increase of service life reduces the expense that changes and produce.
The arc correction device is made of aluminum magnesium alloy, the weight is lightened, the single person is convenient to lift and control, the labor intensity of workers is greatly reduced, the condition that a working face is damaged due to collision between a sample plate and a mold cavity is avoided, and the arc correction efficiency is improved.
The effective measuring range of the arc calibrating device is the upper detecting section 34 and the lower detecting section 36 at two ends, so that the inner arc, the outer arc and the width plane detection are integrated together, and the detecting function of the arc calibrating sample plate is greatly increased.
The arc correction device is beneficial to simulating the uniform growth of casting blanks in a mold cavity of a crystallizer, increasing the toughness of blank shells, greatly reducing the steel leakage probability of the casting blanks, improving the yield of the casting blanks, greatly reducing the spare part cost, greatly shortening the supply period, effectively saving time, improving the production efficiency, reducing the labor intensity and increasing the safety.
Example IV
As shown in fig. 8, fig. 8 is a schematic arc calibrating view of the arc calibrating device; the arc correction method adopting the arc correction device comprises the following steps: calculating shrinkage conditions of molten steel in a crystallizer, specifically, predicting shrinkage conditions of molten steel in web plates and flanges of inner and outer arcs of the crystallizer and a lower opening in the width direction, further calculating tolerance of a lower cavity opening and an upper cavity opening, then according to the tolerance, selecting a feeler gauge with higher precision, arranging corresponding parts on 3 sections shown in the following table, padding precision stopper rulers with different thicknesses at designated positions during arc correction, then adjusting the height value of a foot roller, and ensuring that gaps (usually equal-thickness precision feeler gauges are stuffed) with the thickness less than or equal to 0.02mm are reserved between the foot roller and an arc correction device, and then rotating the foot roller.
The foregoing description of the preferred embodiment of the invention is merely illustrative of the invention and is not intended to be limiting. It will be appreciated by persons skilled in the art that many variations, modifications, and even equivalents may be made thereto without departing from the spirit and scope of the invention as defined in the appended claims.
Claims (4)
1. The design method of the heavy H-shaped steel crystallizer is characterized in that the heavy H-shaped steel crystallizer comprises a cavity which is arranged in a penetrating manner, the cavity comprises a web inner arc section, a web outer arc section, a flange inner arc section, a flange outer arc section and a flange edge section, the web inner arc section and the web outer arc section form a web cavity, the flange inner arc section, the flange outer arc section and the flange edge section form a flange cavity, the end part of the flange inner arc section is connected with the end part of the web inner arc section, the end part of the flange outer arc section is connected with the end part of the web outer arc section, the two ends of the flange edge section are respectively connected with the flange inner arc section and the flange outer arc section, and the two flange cavities are symmetrically arranged at the two ends of the web cavity so as to form the cavity with an H-shaped cross section;
the inner part of the cavity is sequentially provided with a plurality of inverted taper sections which are arranged at equal widths along the extending direction of the cavity, each inverted taper section comprises a web inner arc taper section arranged on the web inner arc section, a web outer arc taper section arranged on the web outer arc section, a flange inner arc taper section arranged on the flange inner arc section, a flange outer arc taper section arranged on the flange outer arc section and a flange edge taper section arranged on the flange edge section, wherein the web inner arc taper section, the web outer arc taper section, the flange inner arc taper section, the flange outer arc taper section and the flange edge taper section are all arranged to be planes, and arc-like arc end faces are formed on the web inner arc section, the web outer arc section, the flange inner arc section and the flange outer arc section by arranging the inverted taper sections which are continuously connected and have different inclinations, and the flange edge sections are inclined;
the design method of the heavy H-shaped steel crystallizer comprises the following steps:
s1, setting the size of a lower cavity opening according to the size of an H-shaped casting blank cold blank, wherein the size of the lower cavity opening comprises a web plate size, a flange size, a width size and a corner size;
s2, designing the radius of the outer arc end surface of the flange based on the size of the lower cavity opening, designing the radius of the inner arc end surface of the flange based on the radius of the outer arc end surface of the flange, and designing each reverse taper of the inner arc taper section of the flange and the outer arc taper section of the flange through the radius of the outer arc end surface of the flange and the radius of the inner arc end surface of the flange;
s3, designing the radius of the web inner arc end surface and the radius of the web outer arc end surface based on the inverted taper of the flange inner arc taper section and the flange outer arc taper section and the size of the lower cavity mouth, and designing the inverted taper of the web inner arc taper section and the web outer arc taper section based on the radius of the web inner arc end surface and the radius of the web outer arc end surface;
s4, designing the inclination angles of the flat end surfaces of the two flange edges in the width direction based on the back taper of the web inner arc taper section and the web outer arc taper section, and further designing the back taper of the flange edge taper sections;
the width of the back taper section is set to be 100mm;
the method comprises the steps of determining the radius of an outer arc of a web plate, namely equally dividing the radius along the casting radius at intervals of 100mm, smoothly connecting a plurality of straight line segments, taking three points from the highest point to the middle point to the lowest point as a reference arc, simultaneously taking the value of the position with the interval width of 100mm, and determining the circle center coordinate value of the radius of the outer arc;
the method comprises the steps of determining the radius of an inner arc of a web, namely, taking a horizontal line at the position of 100mm of the distance between the determined outer arc of the web, taking a length value according to the inverted cone of the optimal design, taking a point position mark, taking three points of the highest point, the middle point and the lowest point as reference arcs, taking the value of the position of 100mm of the distance, and determining the center coordinate value of the radius of the inner arc;
the method comprises the steps of determining the outer arc radius of a flange, namely equally dividing the outer arc radius of the flange along the casting radius at intervals of 100mm, smoothly connecting a plurality of straight line segments, taking three points from the highest point to the middle point to the lowest point as a reference arc, simultaneously taking the value of the position with the interval width of 100mm, and determining the circle center coordinate value of the outer arc radius;
the method comprises the steps of determining the inner arc radius of a flange, namely, taking a horizontal line at the position of the determined outer arc radius of the flange, which is 100mm away, taking a length value according to the inverted cone of the optimal design, taking a point position mark, taking three points of the highest point, the middle point and the lowest point as reference arcs, taking a value at the position of the space, which is 100mm away, and determining the center coordinate value of the inner arc radius.
2. The method of designing a heavy duty H-section steel mold according to claim 1, wherein the end of the flange inner arc section and the end of the web inner arc section are connected by an inclined first transition section, and the end of the flange outer arc section and the end of the web outer arc section are connected by an inclined second transition section.
3. The method of designing a heavy duty H-section steel mold according to claim 2, wherein the first transition section and the web inner arc section, the second transition section and the web outer arc section are arc-transitioned through a first arc section, the radii of the first arc sections are the same, and the radii of the first arc sections along the extending direction of the cavity are kept uniform.
4. A method of designing a heavy duty H-section steel mould according to claim 3 wherein the first transition section and the flange inner arc section, the second transition section and the flange outer arc section are arc-transitioned through a second arc section, the radii of the second arc sections are the same, and the radii of the second arc sections are maintained consistent along the direction of extension of the mould cavity.
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CH689223A5 (en) * | 1994-07-25 | 1998-12-31 | Concast Standard Ag | Continuous casting mould for H-beam preform profiles |
| CN1266388A (en) * | 1997-08-04 | 2000-09-13 | 乔维尼·阿维迪 | Improved contact mould for the continuous casting of steel slabs |
| CN201338078Y (en) * | 2009-01-14 | 2009-11-04 | 秦皇岛首钢长白结晶器有限责任公司 | Copper pipe of beam blank mould |
| CN103480810A (en) * | 2013-10-11 | 2014-01-01 | 重庆大学 | Method for determining cone angles of inner cavity of H-type billet continuous casting crystallizer |
| CN203778720U (en) * | 2014-01-21 | 2014-08-20 | 德阳东合新材料科技有限公司 | H-shaped crystallizer copper pipe |
| CN109513889A (en) * | 2019-01-03 | 2019-03-26 | 山东莱钢永锋钢铁有限公司 | A kind of small billet tube type mold that off-square is effectively reduced |
-
2021
- 2021-11-26 CN CN202111446881.6A patent/CN114178493B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CH689223A5 (en) * | 1994-07-25 | 1998-12-31 | Concast Standard Ag | Continuous casting mould for H-beam preform profiles |
| CN1266388A (en) * | 1997-08-04 | 2000-09-13 | 乔维尼·阿维迪 | Improved contact mould for the continuous casting of steel slabs |
| CN201338078Y (en) * | 2009-01-14 | 2009-11-04 | 秦皇岛首钢长白结晶器有限责任公司 | Copper pipe of beam blank mould |
| CN103480810A (en) * | 2013-10-11 | 2014-01-01 | 重庆大学 | Method for determining cone angles of inner cavity of H-type billet continuous casting crystallizer |
| CN203778720U (en) * | 2014-01-21 | 2014-08-20 | 德阳东合新材料科技有限公司 | H-shaped crystallizer copper pipe |
| CN109513889A (en) * | 2019-01-03 | 2019-03-26 | 山东莱钢永锋钢铁有限公司 | A kind of small billet tube type mold that off-square is effectively reduced |
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| CN114178493A (en) | 2022-03-15 |
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