CN110788135B - Composite blank manufacturing method for rolling titanium-steel composite plate - Google Patents
Composite blank manufacturing method for rolling titanium-steel composite plate Download PDFInfo
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- CN110788135B CN110788135B CN201910939757.XA CN201910939757A CN110788135B CN 110788135 B CN110788135 B CN 110788135B CN 201910939757 A CN201910939757 A CN 201910939757A CN 110788135 B CN110788135 B CN 110788135B
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B1/00—Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations
- B21B1/38—Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations for rolling sheets of limited length, e.g. folded sheets, superimposed sheets, pack rolling
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B47/00—Auxiliary arrangements, devices or methods in connection with rolling of multi-layer sheets of metal
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B1/00—Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations
- B21B1/38—Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations for rolling sheets of limited length, e.g. folded sheets, superimposed sheets, pack rolling
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Abstract
The invention relates to a composite blank manufacturing method for rolling a titanium-steel composite plate, wherein 2 substrates and 2 titanium plates are adopted, the substrates are square substrates, the middle parts of 1 substrate are provided with a linear groove, and two sides of the linear groove are provided with a through long boss I; in addition, I-shaped grooves are correspondingly formed in the 1 substrate, and bosses II are arranged on two sides of each I-shaped groove; the 2 substrates are oppositely buckled during assembly, the boss I and the boss II form an occlusion structure, and the 2 titanium plates are arranged in an internal cavity formed by the I-shaped groove and the I-shaped groove after the 2 substrates are closed. The method of forming the grooves with different shapes on the 2 base plates is adopted, so that the base plates can be mutually occluded after being closed, sealing welding can be carried out without arranging a barrier strip, the number of welding joints is reduced, the welding efficiency is improved, the welding heat input to the corner part is reduced, the heat influence on the base metal structure in the welding process is reduced, and the welding quality is improved.
Description
Technical Field
The invention relates to the technical field of composite plate production, in particular to a composite blank manufacturing method for rolling a titanium-steel composite plate.
Background
The titanium steel composite plate has excellent corrosion resistance of the titanium composite layer and the strength and plasticity of the basic structural steel, greatly reduces the economic cost compared with the titanium plate, is an ideal material for manufacturing corrosion-resistant environmental equipment, is popularized and applied in the fields of petrochemical industry, salt production, electric power, seawater desalination, ocean engineering and the like, and has great application potential.
At present, the method for producing the titanium steel composite plate mainly comprises 4 methods: explosion cladding, diffusion cladding, explosion cladding-rolling, and rolling cladding. The composite plates produced by the first two processes have small sizes and sometimes are difficult to meet the requirements of users, and due to the production operation of a high-capacity rolling mill, the explosion cladding-rolling method and the rolling cladding method are rapidly developed, but the explosion cladding method and the diffusion cladding method are only adopted in certain special fields at present and have the tendency of being eliminated even abroad. The latter two methods can produce large-size titanium steel composite plates, but the explosive welding-rolling method has complex processes, a plurality of factors influencing the bonding strength of the composite plates, large energy consumption, environmental pollution and relatively low yield, and has the tendency of being replaced by the direct rolling method.
In recent years, a plurality of scholars research on a technology for preparing titanium steel composite plates by a rolling method, and a blank preparation method of the titanium steel composite plates is taken close attention as a basic link for preparing the composite plates. The common assembly method is to stack carbon steel and titanium plate in sequence and seal-weld the titanium plate to the core of the composite blank by adding carbon steel bar.
Chinese patent publication No. CN 102773670a discloses a "method for manufacturing a titanium-steel-titanium double-sided composite board", which is a blank manufacturing method that three carbon steel plates and four titanium plates are sequentially stacked, and the titanium plates are sealed and welded by barrier strips.
Chinese patent publication No. CN 101992344a discloses a "method for manufacturing a titanium-steel composite plate", which is a method for sealing and welding a composite blank by using four titanium plates as side sealing plates, wherein the titanium plates are opposite to the surfaces of steel plates and completely overlapped to form the composite blank.
Chinese patent with publication number CN 104874634A discloses a material assembling method and a rolling method of a titanium steel composite plate, which mainly comprise the following steps: preparing two steel plates, two titanium plates and four side plates, forming a hole in at least one of the side plates, wrapping the two titanium plates in the center by adopting the four side plates and the two steel plates, and then sealing and welding.
The above technical scheme has the following problems: the carbon steel strip or the titanium strip is adopted for sealing and welding the composite blank, the machining requirement on the holding strip is high, and if the straightness of the holding strip is not enough, the vacuum electron beam cannot be used for sealing and welding. Meanwhile, the sealing welding process is complex, and not only 8 long straight-side welding seams but also 4 short vertical sides need to be sealed and welded. Because the same position is repeatedly affected by welding heat, the corner part is easy to crack and the seal welding is easy to lose efficacy in the subsequent heating and rolling processes.
Disclosure of Invention
The invention provides a composite blank manufacturing method for rolling a titanium-steel composite plate, which adopts a method of forming grooves with different shapes on 2 base plates, so that the base plates can be mutually occluded after being closed, sealing welding can be carried out without arranging a barrier strip, the number of welding joints is reduced, the welding efficiency is improved, the welding heat input to the corner part is reduced, the heat influence on the base metal structure in the welding process is reduced, and the welding quality is improved.
In order to achieve the purpose, the invention adopts the following technical scheme:
a rolling titanium-steel clad plate compound blank manufacturing method, the base plate and titanium plate to be combined surface are processed separately and then assembled; the base plate and the titanium plate are 2, the base plate is a square base plate, the middle part of 1 base plate is provided with a linear groove, and two sides of the linear groove are provided with a through long boss I; in addition, I-shaped grooves are correspondingly formed in the 1 substrate, and bosses II are arranged on two sides of each I-shaped groove; the 2 substrates are oppositely buckled during assembly, the boss I and the boss II form an occlusion structure, and the 2 titanium plates are arranged in an internal cavity formed by the I-shaped groove and the I-shaped groove after the 2 substrates are closed.
A composite blank manufacturing method for rolling a titanium-steel composite plate specifically comprises the following steps:
1) preparing 1 square substrate with a straight-line-shaped groove in the middle of one side, 1 square substrate with the same specification with an I-shaped groove in the middle of one side, and 2 titanium plates;
2) milling and grinding the first boss and the second boss on the 2 base plates respectively to enable the height from the top surface to the bottom surface of the corresponding groove to be 2 titanium plates plus (3-5) mm; the width of the first boss is equal to that of the second boss, and the width of the first boss is 30-50 mm;
3) processing the periphery of the titanium plate to enable the length of the titanium plate to be equal to the distance between 2 bosses I and II, which is 20-40 mm, and the width of the titanium plate to be equal to the distance between 2 bosses II, which is 20-40 mm;
4) processing the surfaces to be compounded on the base plate and the titanium plate, removing oil stains on the processed surfaces, and performing blowing treatment;
5) assembling; horizontally placing the I-shaped grooves of the 1 substrate upwards, stacking the 2 titanium plates, centering the stacked titanium plates in the I-shaped grooves, and coating a separant between the 2 titanium plates; then the I-shaped groove of the other 1 substrate is downwards buckled on the 1 st substrate; after assembly, the 2 titanium plates are positioned in the 2 base plates, and gaps of 10-20 mm are reserved between the peripheral edges and the first boss and between the peripheral edges and the second boss respectively;
6) putting the titanium-steel composite blank obtained in the step 5) into a centering machine to completely center the upper substrate and the lower substrate, and finishing the preparation of the composite blank.
The base plate is the continuous casting billet, directly forms "one" font recess on 2 continuous casting billet base plates through the crystallizer that has corresponding spill cross-section in the continuous casting process, and wherein 1 continuous casting billet base plate rethread machining removes one section back formation "worker" font recess with a boss both ends respectively, and the length of removing the section equals the width of boss one.
The base plate is an intermediate blank, a straight-line-shaped groove is directly formed on 2 intermediate blank base plates through a roller with a corresponding convex section in the rolling process, two sections of two ends of a boss of 1 intermediate blank base plate are respectively removed through machining to form an I-shaped groove, and the length of the removed section is equal to the width of the boss.
The substrate is a carbon steel continuous casting billet or a low alloy steel continuous casting billet, and the carbon content in the substrate is less than or equal to 0.22 percent by weight.
The titanium plate is an industrial pure titanium plate or a titanium alloy plate.
Compared with the prior art, the invention has the beneficial effects that:
1) the number of seal welding joints is reduced, and the blank making efficiency of rolling the titanium-steel composite plate is improved;
2) the complexity of the assembly process is reduced, and the stability of the blank making process of rolling the titanium-steel composite plate is improved;
3) the sealing quality and the yield of the titanium-steel composite blank in the rolling process are ensured.
Drawings
Fig. 1 is a cross-sectional view of a composite blank according to the present invention.
FIG. 2 is a schematic structural diagram of a substrate with a linear groove according to the present invention.
FIG. 3 is a schematic structural diagram of the substrate with I-shaped grooves according to the present invention.
In the figure: 1. a substrate 11 with a groove shaped like a Chinese character 'yi', a boss I2, a titanium plate 3, a release agent 4, a substrate 41 with a groove shaped like a Chinese character 'gong', 42 and a boss II
Detailed Description
The following further describes embodiments of the present invention with reference to the accompanying drawings:
as shown in fig. 1, in the method for manufacturing a composite blank by rolling a titanium-steel composite plate according to the present invention, the surfaces to be composited of a substrate and a titanium plate are respectively processed and then assembled; the base plate and the titanium plate are both 2, the base plate is a square base plate, the middle part of 1 base plate is provided with a linear groove 11, and two sides of the linear groove 11 are provided with a first through-long boss 12 (shown in figure 2); in addition, an I-shaped groove 41 is correspondingly arranged on the 1 substrate, and two bosses 42 (shown in figure 3) are arranged on two sides of the I-shaped groove 41; the 2 base plates are oppositely buckled during assembly, the first boss 12 and the second boss 42 form an occlusion structure, and the 2 titanium plates 2 are arranged in an internal cavity formed by the I-shaped groove and the 11I-shaped groove 41 after the 2 base plates 1 and 4 are combined.
A composite blank manufacturing method for rolling a titanium-steel composite plate specifically comprises the following steps:
1) preparing 1 square substrate 1 with a straight-line-shaped groove in the middle of one side, 1 square substrate 4 with an I-shaped groove in the middle of one side and 2 titanium plates 2;
2) milling and grinding the first bosses 12 and the second bosses 42 on the 2 base plates 1 and 4 respectively to enable the heights from the top surfaces to the bottom surfaces of the corresponding grooves 11 and 41 to be 2 titanium plates with the thickness of plus (3-5) mm; the width of the first boss 12 is equal to that of the second boss 42, and the widths of the first boss and the second boss are both 30-50 mm;
3) processing the periphery of the titanium plate 2 to ensure that the length of the titanium plate is equal to the distance between 2 bosses I and 12, which is 20-40 mm, and the width of the titanium plate is equal to the distance between 2 bosses II and 42, which is 20-40 mm;
4) processing the surfaces to be compounded on the base plates 1 and 4 and the titanium plate 2, removing oil stains on the processed surfaces, and performing blowing treatment;
5) assembling; horizontally placing the I-shaped grooves 11 of the 1 substrate 1 upwards, stacking the 2 titanium plates 2, centering the stacked titanium plates in the I-shaped grooves 11, and coating a separant 3 between the 2 titanium plates 2; then the I-shaped groove 41 of the other 1 substrate 4 is downwards buckled on the 1 st substrate 1; after assembly, the 2 titanium plates 2 are positioned inside the 2 base plates 1 and 4, and gaps of 10-20 mm are reserved between the peripheral edges and the first bosses 12 and the second bosses 42 respectively;
6) putting the titanium-steel composite blank obtained in the step 5) into a centering machine to completely center the upper substrate 4 and the lower substrate 1, and finishing the preparation of the composite blank.
The base plates 1 and 4 are continuous casting blanks, a straight-line-shaped groove 11 is directly formed in 2 continuous casting blank base plates through a crystallizer with a corresponding concave cross section in the continuous casting process, the two ends of a boss I12 of the 1 continuous casting blank base plate are respectively removed by one section through machining to form an I-shaped groove 41, and the length of the removed section is equal to the width of the boss I12.
The base plates 1 and 4 are intermediate blanks, a straight-line-shaped groove 11 is directly formed in 2 intermediate blank base plates through a roller with a corresponding convex section in the rolling process, two ends of a first boss 12 of the 1 intermediate blank base plate are respectively removed through machining to form an I-shaped groove 41, and the length of the removed section is equal to the width of the first boss 12.
The base plates 1 and 4 are carbon steel continuous casting billets or low alloy steel continuous casting billets, and the carbon content in the base plates 1 and 4 is less than or equal to 0.22 percent in percentage by weight.
The titanium plate 2 is an industrial pure titanium plate or a titanium alloy plate.
The following examples are carried out on the premise of the technical scheme of the invention, and detailed embodiments and specific operation processes are given, but the scope of the invention is not limited to the following examples. The methods used in the following examples are conventional methods unless otherwise specified.
[ examples ] A method for producing a compound
In this example, the information on the substrate is shown in table 1, the information on the titanium plate is shown in table 2, and the results of the performance test of the composite material are shown in table 3.
TABLE 1
TABLE 2
| Numbering | Steel grade | State of incoming material | Length of | Width of | Thickness of |
| Example 1 | TA1 | Sheet material | 2100mm | 2100mm | 20mm |
| Example 2 | TA1 | Sheet material | 2100mm | 2100mm | 25mm |
| Example 3 | TA2 | Sheet material | 1990mm | 1990mm | 25mm |
| Example 4 | TA2 | Sheet material | 1680mm | 1680mm | 30mm |
| Example 5 | TC4 | Sheet material | 1870mm | 1870mm | 30mm |
TABLE 3
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and the technical solutions and the inventive concepts thereof according to the present invention should be equivalent or changed within the scope of the present invention.
Claims (3)
1. A rolling titanium-steel clad plate compound blank manufacturing method, the base plate and titanium plate to be combined surface are processed separately and then assembled; the titanium-plated composite material is characterized in that 2 substrates and 2 titanium plates are adopted, the substrates are square substrates, a linear groove is formed in the middle of each substrate 1, and bosses I with full length are arranged on two sides of the linear groove; in addition, I-shaped grooves are correspondingly formed in the 1 substrate, and bosses II are arranged on two sides of each I-shaped groove; the 2 substrates are oppositely buckled during assembly, the boss I and the boss II form an occlusion structure, and the 2 titanium plates are arranged in an internal cavity formed by the I-shaped groove and the I-shaped groove after the 2 substrates are closed; the method specifically comprises the following steps:
1) preparing 1 square substrate with a straight-line-shaped groove in the middle of one side, 1 square substrate with the same specification with an I-shaped groove in the middle of one side, and 2 titanium plates;
2) milling and grinding the first boss and the second boss on the 2 base plates respectively to enable the height from the top surface to the bottom surface of the corresponding groove to be 2 titanium plates plus (3-5) mm; the width of the first boss is equal to that of the second boss, and the width of the first boss is 30-50 mm;
3) processing the periphery of the titanium plate to enable the length of the titanium plate to be equal to the distance between 2 bosses I and II, which is 20-40 mm, and the width of the titanium plate to be equal to the distance between 2 bosses II, which is 20-40 mm;
4) processing the surfaces to be compounded on the base plate and the titanium plate, removing oil stains on the processed surfaces, and performing blowing treatment;
5) assembling; horizontally placing the I-shaped grooves of the 1 substrate upwards, stacking the 2 titanium plates, centering the stacked titanium plates in the I-shaped grooves, and coating a separant between the 2 titanium plates; then the I-shaped groove of the other 1 substrate is downwards buckled on the 1 st substrate; after assembly, the 2 titanium plates are positioned in the 2 base plates, and gaps of 10-20 mm are reserved between the peripheral edges and the first boss and between the peripheral edges and the second boss respectively;
6) putting the titanium-steel composite blank obtained in the step 5) into a centering machine to completely center the upper substrate and the lower substrate, and finishing the preparation of the composite blank;
the substrate is a continuous casting billet, a straight-line-shaped groove is directly formed on 2 continuous casting billet substrates through a crystallizer with a corresponding concave section in the continuous casting process, two ends of one lug boss of 1 continuous casting billet substrate are respectively removed by machining to form an I-shaped groove, and the length of the removal section is equal to the width of the lug boss I;
or the substrate is an intermediate blank, a straight-line-shaped groove is directly formed on 2 intermediate blank substrates through a roller with a corresponding convex section in the rolling process, two sections of two ends of a boss of 1 intermediate blank substrate are respectively removed through machining to form an I-shaped groove, and the length of the removed section is equal to the width of the boss.
2. The method for producing a composite billet for rolling a titanium-steel composite plate according to claim 1, wherein the substrate is a carbon steel continuous casting billet or a low alloy steel continuous casting billet, and the carbon content in the substrate is less than or equal to 0.22% by weight.
3. The method of claim 1, wherein the titanium plate is an industrial pure titanium plate or a titanium alloy plate.
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