CN216420630U - Continuous cold rolling die for titanium alloy plate - Google Patents
Continuous cold rolling die for titanium alloy plate Download PDFInfo
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- CN216420630U CN216420630U CN202122945414.XU CN202122945414U CN216420630U CN 216420630 U CN216420630 U CN 216420630U CN 202122945414 U CN202122945414 U CN 202122945414U CN 216420630 U CN216420630 U CN 216420630U
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Abstract
A titanium alloy plate continuous cold rolling die is used for continuous cold rolling production of titanium alloy plates; the titanium alloy plates are arranged on the continuous cold rolling die at set intervals to form a rolling composite, and then the rolling composite is subjected to reciprocating multi-pass continuous rolling through the reversible cold rolling mill, so that the conventional TC4 titanium alloy plate is converted into stable-speed, stable-state and continuous rolling in a constant roll gap state by single-block rolling, and the production efficiency of the titanium alloy plate is greatly improved; in addition, the flow direction of the titanium alloy plate in the rolling process is controlled by arranging the diversion sink groove on the continuous cold rolling die, so that the titanium alloy plate with isotropy, high strength, high toughness and high plate shape quality is obtained, the head and tail and transverse dimension precision of the titanium alloy plate product are well controlled, and the final finished product does not need to be subjected to edge cutting, so that the cutting waste and process waste are greatly reduced, and the production cost of the titanium alloy plate is greatly reduced.
Description
Technical Field
The utility model relates to a titanium and titanium alloy production technical field, concretely relates to continuous cold rolling mould of titanium alloy panel.
Background
The titanium and titanium alloy plate is a main product of a titanium processing material, the yield of the titanium processing material is less than 10 ten thousand tons in 2020, wherein the yield of the titanium plate is more than 5 ten thousand tons and accounts for about 55 percent. The titanium plate has the advantages of light weight, high strength, corrosion resistance and good high-temperature mechanical property, so the titanium plate is widely applied to industries such as national defense industry, aerospace, petrochemical industry, salt and alkali production, ship manufacturing, seaside power stations, medical sports and the like.
The TC4 titanium alloy has the alloy component of Ti-6Al-4V, has the advantages of obvious high strength, high-temperature creep resistance and the like, and is one of the most widely applied varieties in all titanium alloys. However, TC4 has the problems of high strength and large processing difficulty, and particularly, the sheet products generally have the defects of plate shape and anisotropic mechanical property, so that the production yield is low, and the sale price is high; the selling price of the medium-high end quality TC4 thin plate with the width of 1000mm and the thickness of 0.5mm exceeds 30 ten thousand yuan per ton by the price of 7 ten thousand yuan per ton of the titanium sponge, so that the large-scale popularization and application of the TC4 alloy plate are limited to a certain extent, and the TC4 alloy plate is particularly reflected in the field of civil application.
Therefore, improving the production efficiency, yield and plate shape quality of the TC4 titanium alloy plate, especially a wide thin plate, and reducing the anisotropy of mechanical properties, and further reducing the production cost and the selling price of the product have become one of the technical problems to be solved urgently in the titanium alloy plate processing industry.
The research and development conditions of the production equipment and the rolling production process adopted by TC4 titanium alloy plates at home and abroad are as follows:
in order to reduce investment, a plurality of enterprises usually use rolling production lines of steel and the like to carry out substitute processing, but the specialization degree of equipment is low, so that the performance and the quality of products are unstable, and particularly the uniformity and the consistency degree of the products are poor. Most importantly, the plate shape quality and anisotropy of the wide TC4 plate product are basically in an uncontrolled state during production on a rolling mill configured in the current steel industry, so that the performance and quality of a final product cannot meet the requirements of practical application at all.
Secondly, the traditional two-person-turning type plate cold rolling mill is adopted to carry out manual auxiliary single-block type production, the single-block type and discontinuous cold rolling production mode has the problems of low continuous degree and low production efficiency, and the problems of frequent material biting, material throwing and frequent speed increasing and decreasing of the cold rolling mill exist in the rolling process, so that the deformation condition of the TC4 plate in the rolling process is further worsened, and the existing traditional symmetrical cold rolling deformation method is difficult to thoroughly solve the technical problem of product anisotropy. Statistical data prove that the comprehensive yield of the TC4 plate cold-rolled by the traditional single-block method production process is only 50%, but the energy consumption per ton of the product exceeds 1 ten thousand kilowatt-hours. In addition, the TC4 titanium alloy plate product cold-rolled by the traditional block production process has high head and tail and transverse dimension precision and plate shape control difficulty, and the final finished product needs to be subjected to edge cutting, so that the cutting waste and the process waste are high.
The development of the continuous cold rolling production process of the TC4 titanium alloy plate also meets insurmountable technical bottlenecks at present, and due to the special lattice type of the TC4 titanium alloy, the roll-type process of aluminum plate strips, copper plate strips and pure titanium TA1, TA2 and TA3 plate strips is difficult to realize high-efficiency production. At present, the development of a belt-type production process of TC4 titanium alloy plates at home and abroad is not successful, and a plurality of enterprises try to make coils, but the anisotropy, the strength, the toughness and the like of the products cannot meet the market requirements. In addition, the continuous rolling production process by the belt method is full longitudinal rolling from the root, and the problem of anisotropy of TC4 plate products cannot be solved. Therefore, the existing roll-type process and belt-type process production technology are not suitable for the continuous production of TC4 titanium alloy plates.
SUMMERY OF THE UTILITY MODEL
In order to overcome the defects in the background technology, the utility model discloses a continuous cold rolling die for titanium alloy plates, which is used for the continuous cold rolling production of a single titanium alloy plate; the continuous cold rolling die is rectangular plate-shaped, and a plurality of sinking grooves are uniformly distributed on the upper plate surface; when the titanium alloy plate is produced by cold rolling, a plurality of titanium alloy plates are arranged in the sinking groove of the continuous cold rolling die, and the continuous cold rolling die drives the plurality of titanium alloy plates to perform reciprocating multi-pass continuous rolling through the reversible cold rolling mill, so that the conventional manual-assisted TC4 titanium alloy plate single-block rolling is converted into stable-speed, stable-state and continuous rolling in a constant roll gap state, and the production efficiency of the TC4 titanium alloy plate is greatly improved; in addition, the sink groove arranged on the continuous cold rolling die limits the flow direction of the TC4 titanium alloy plate in the rolling process, the control of longitudinal diversion or transverse diversion of the TC4 titanium alloy plate in the rolling process is realized, the TC4 titanium alloy plate is alternately subjected to reciprocating multi-pass continuous rolling through longitudinal diversion and transverse diversion by a reversible cold rolling mill, and finally, the TC4 titanium alloy plate with isotropy, high strength, high toughness and high plate shape quality is obtained, meanwhile, the cutting waste and process waste are greatly reduced, and the production cost of the TC4 titanium alloy plate is greatly reduced.
In order to realize the utility model aims at providing a following technical scheme: a titanium alloy plate continuous cold rolling die is used for continuous cold rolling production of a single titanium alloy plate; the continuous cold rolling die is rectangular plate-shaped, and a plurality of sinking grooves are uniformly distributed on the upper plate surface; when the titanium alloy plate is produced by cold rolling, a plurality of titanium alloy plates are arranged in the sinking groove of the continuous cold rolling die, and the continuous cold rolling die drives the plurality of titanium alloy plates to perform reciprocating multi-pass continuous rolling through the reversible cold rolling mill, so that the conventional manual-assisted TC4 titanium alloy plate single-block rolling is converted into stable-speed, stable-state and continuous rolling in a constant roll gap state, and the production efficiency of the TC4 titanium alloy plate is greatly improved.
Further, the continuous cold rolling die comprises a rough rolling die, a finish rolling die and a correcting die; the yield strength of the rough rolling die, the finish rolling die and the correcting die is greater than that of the titanium alloy plate to be rolled; the rough rolling die comprises a rough rolling longitudinal flow guide die and a rough rolling transverse flow guide die; the finish rolling die comprises a finish rolling longitudinal flow guide die and a finish rolling transverse flow guide die;
the upper plate surfaces of the rough rolling longitudinal flow guiding die, the rough rolling transverse flow guiding die, the finish rolling longitudinal flow guiding die, the finish rolling transverse flow guiding die and the correcting die are all in a plate shape, wherein a plurality of flow guiding grooves are uniformly distributed on the upper plate surfaces of the rough rolling longitudinal flow guiding die, the rough rolling transverse flow guiding die, the finish rolling longitudinal flow guiding die and the finish rolling transverse flow guiding die, and a plurality of correcting grooves are uniformly distributed on the upper plate surface of the correcting die;
in the rolling process of the titanium alloy plate, three procedures of rough rolling, finish rolling and correction are required; in rough rolling, the titanium alloy plates are matched with a rough rolling longitudinal flow guide die and a rough rolling transverse flow guide die, a plurality of titanium alloy plates are arranged in flow guide grooves of the rough rolling longitudinal flow guide die and the rough rolling transverse flow guide die, and a flexible covering plate is arranged on the upper parts of the titanium alloy plates to form a rolling composite body; in the finish rolling, a finish rolling longitudinal flow guide die and a finish rolling transverse flow guide die are matched with the titanium alloy plates, a plurality of titanium alloy plates are arranged in flow guide grooves of the finish rolling longitudinal flow guide die and the finish rolling transverse flow guide die, and the upper parts of the titanium alloy plates are provided with flexible covering plates to form a rolling complex; the rolling composite is subjected to reciprocating multi-pass continuous rolling through a reversible cold rolling mill, so that the conventional manual-assisted single-block rolling of the TC4 titanium alloy plate is converted into stable-speed, stable-state and continuous rolling in a constant roll gap state, and the production efficiency of the TC4 titanium alloy plate is greatly improved; in addition, in the processes of rough rolling and finish rolling, the flow guide grooves arranged on the flow guide die control the material flow direction of the titanium alloy plate in the rolling deformation process, the problem of anisotropy existing after continuous cold rolling of the titanium alloy plate in the past is solved, and the mechanical property of the rolled titanium alloy plate is greatly improved; meanwhile, in the cold rolling deformation process of the TC4 titanium alloy plate, the accuracy of the head, the tail and the transverse dimension of the TC4 titanium alloy plate product is well controlled due to the control of the diversion sink groove, and the final finished product does not need to be subjected to edge cutting, so that the cutting waste and the process waste are greatly reduced, and the production cost of the TC4 titanium alloy plate is greatly reduced;
in the straightening rolling, the straightening groove on the straightening die is used for further straightening the shape of the titanium alloy plate, and simultaneously, the residual anisotropy of the titanium alloy plate after finish rolling is further weakened, so that the quality of the finished titanium alloy plate is fully ensured.
Further, the guide groove on the upper plate surface of the rough rolling longitudinal guide die is a rough rolling longitudinal guide groove, the length of the rough rolling longitudinal guide groove is greater than the length of the titanium alloy plate to be rolled, the width of the rough rolling longitudinal guide groove is equal to the width of the titanium alloy plate to be rolled, and a gap is formed between the width of the rough rolling longitudinal guide groove and the width of the titanium alloy plate to be rolled; when the rough rolling of the titanium alloy plate is carried out on the rough rolling longitudinal diversion die, the rough rolling longitudinal diversion trench controls the deformation flow of the titanium alloy plate, so that the titanium alloy plate is only subjected to full longitudinal rolling; the guide groove on the upper plate surface of the rough rolling transverse guide die is a rough rolling transverse guide groove, the length of the rough rolling transverse guide groove is equal to the length of the titanium alloy plate to be rolled, the width of the rough rolling transverse guide groove is larger than the width of the titanium alloy plate to be rolled, and a gap is formed between the length of the rough rolling transverse guide groove and the length of the titanium alloy plate to be rolled; when the rough rolling of the titanium alloy plate is carried out on the rough rolling transverse diversion mold, the rough rolling transverse diversion groove controls the deformation flow of the titanium alloy plate, so that the titanium alloy plate is only subjected to full transverse rolling; the full longitudinal rolling and the full transverse rolling are alternately carried out, so that the titanium alloy plate after rough rolling is prevented from remaining large anisotropy;
the guide groove on the upper plate surface of the finish rolling longitudinal guide die is a finish rolling longitudinal guide groove, the length of the finish rolling longitudinal guide groove is greater than the length of the titanium alloy plate to be rolled, the width of the finish rolling longitudinal guide groove is equal to the width of the titanium alloy plate to be rolled, and a gap is arranged between the width of the finish rolling longitudinal guide groove and the width of the titanium alloy plate to be rolled; when the titanium alloy plate is finish-rolled on the finish-rolling longitudinal diversion die, the finish-rolling longitudinal diversion trench controls the deformation flow of the titanium alloy plate, so that the titanium alloy plate is only subjected to full longitudinal rolling; the guide groove on the upper plate surface of the finish rolling transverse guide die is a finish rolling transverse guide groove, the length of the finish rolling transverse guide groove is equal to the length of the titanium alloy plate to be rolled, the width of the finish rolling transverse guide groove is larger than the width of the titanium alloy plate to be rolled, and a gap is formed between the length of the finish rolling transverse guide groove and the length of the titanium alloy plate to be rolled; when the rough rolling of the titanium alloy plate is carried out on the finish rolling transverse diversion mold, the finish rolling transverse diversion trench controls the deformation flow of the titanium alloy plate, so that the titanium alloy plate is only subjected to full transverse rolling; the full longitudinal rolling and the full transverse rolling are alternately carried out, so that the titanium alloy plate after finish rolling is prevented from remaining large anisotropy;
the length and the width of the correcting groove on the upper plate surface of the correcting die are equal to those of the titanium alloy plate to be rolled, and a gap is formed between the length and the width of the correcting groove and the length and the width of the titanium alloy plate to be rolled; when the titanium alloy plate is corrected on the correcting die, the thickness of the correcting die is smaller, and the correcting rolling realizes that a flexible controllable contact deformation area actually exists between a lower working roll and the correcting die in the rolling process of the TC4 titanium alloy plate, so that the titanium alloy plate is subjected to local micro-deformation, and the aims of correcting and controlling the shape of a finished product and further eliminating the anisotropy of the finished product are fulfilled.
Further, the depth of the rough rolling longitudinal diversion grooves and the depth of the rough rolling transverse diversion grooves are the thickness of the titanium alloy plate after rough rolling; the bottom surfaces of the rough rolling longitudinal diversion trenches and the rough rolling transverse diversion trenches are concave surfaces; the concave surface design of the bottom surfaces of the rough-rolled longitudinal guide grooves and the rough-rolled transverse guide grooves ensures that materials at the edges of the titanium alloy plate can easily flow to the inner sides of the longitudinal guide grooves or the transverse guide grooves in the rough-rolling process so as to improve the problem of flash at the edges of the titanium alloy plate in the rolling process;
further, the depth of the finish rolling longitudinal diversion trench and the depth of the finish rolling transverse diversion trench are the thickness of the finish rolled titanium alloy plate; the bottom surfaces of the finish rolling longitudinal diversion trench and the finish rolling transverse diversion trench are convex surfaces; the convex surface design of the bottom surfaces of the finish rolling longitudinal diversion trench and the finish rolling transverse diversion trench is used for improving the stress condition in the middle of the titanium alloy plate in the rolling process, correcting the plate shape after rough rolling, avoiding the problem of the plate shape with thick middle and thin edge after finish rolling, and simultaneously forming a rubbing rolling effect due to the asymmetric deformation of the upper plate surface and the lower plate surface in the titanium alloy plate rolling process, thereby being beneficial to reducing the anisotropy after rolling.
Further, the depth of the correcting groove is equal to the thickness of the finished product of the titanium alloy plate; spherical surfaces are arranged on the bottom surface array of the correction groove; in the straightening rolling, the spherical surfaces arranged on the bottom surface of the straightening groove array enable the titanium alloy plate to generate local micro-deformation, so that the straightening control of the shape of the finished product is achieved, and the anisotropy problem of the finished product is further eliminated; straightening and rolling the titanium alloy plate, wherein the upper surface and the lower surface of the titanium alloy plate are required to be processed; if no special surface quality requirement exists, the titanium alloy plate can be directly delivered after straightening and rolling, and the array straightening grains on the surface of the finished plate have special appearance effect and can be directly used as an appearance piece.
Preferably, the straightening mould comprises a longitudinal straightening mould and a transverse straightening mould; the upper plate surface of the longitudinal correcting die is uniformly provided with a plurality of longitudinal correcting grooves, and the upper plate surface of the transverse correcting die is uniformly provided with a plurality of transverse correcting grooves; the length and the width of the longitudinal correction groove and the transverse correction groove are equal to the length and the width of the titanium alloy plate to be rolled, and gaps are formed between the length and the width of the longitudinal correction groove and the width of the transverse correction groove and the length and the width of the titanium alloy plate to be rolled; the bottom array of the longitudinal correcting groove is provided with columnar convex surfaces parallel to the length direction of the longitudinal correcting mould; the bottom array of the transverse correcting groove is provided with columnar convex surfaces parallel to the width direction of the transverse correcting die; the titanium alloy plate is corrected and rolled by adopting the longitudinal correction die and the transverse correction die, and the columnar convex surfaces arranged at the bottoms of the longitudinal correction groove and the transverse correction groove are utilized to locally generate the micro-deformation with the controllable material flow direction on the surface of the titanium alloy plate again, so that the finished product plate shape correction and anisotropy elimination effects are better.
Further, the thickness range of the continuous cold rolling die is 5-30 mm; in the three rolling processes of rough rolling, finish rolling and plate shape correction, the rolling rate and actual rolling deformation parameters are different, generally the reduction rate of single-pass cold rolling of the rough rolling is 25%, the maximum rolling deformation parameter is the largest, therefore, the required rolling force is also the largest, and in order to ensure that the rough rolling die cannot be structurally damaged in the rolling process, the design has larger thickness, taking a TC4 titanium alloy plate with the initial thickness of 2 mm as an example, and the thickness of the rough rolling die is 30 mm; generally, the actual single-pass cold rolling reduction rate in the finish rolling process is 15%, the rolling deformation parameters are relatively small, so that the required rolling force is relatively small, the design thickness of a finish rolling die is 20 mm, and the finish rolling die is ensured not to generate structural damage in the rolling process; in the plate shape correcting rolling process, the actual single-pass cold rolling reduction rate is the minimum, and the correcting die with the design thickness of 5mm can prevent the structure from being damaged in the rolling process.
Due to the adoption of the technical scheme, the utility model discloses following beneficial effect has: the utility model discloses a titanium alloy plate continuous cold rolling die, which is used for the continuous cold rolling production of a single titanium alloy plate; in the process of rolling the titanium alloy plates, a plurality of titanium alloy plates are arranged on a continuous cold rolling die at set intervals to form a rolling composite, and then the rolling composite is subjected to reciprocating multi-pass continuous rolling through a reversible cold rolling mill, so that the conventional manual-assisted single-block rolling of the TC4 titanium alloy plate is converted into stable-speed, stable-state and continuous rolling in a constant roll gap state, and the production efficiency of the TC4 titanium alloy plate is greatly improved; in addition, the flow direction of the TC4 titanium alloy plate is limited by the flow guiding sinking groove arranged on the continuous cold rolling die in the rolling process, the control of longitudinal flow guiding or transverse flow guiding of the TC4 titanium alloy plate in the rolling process is realized, the TC4 titanium alloy plate is alternately subjected to reciprocating multi-pass continuous rolling by a reversible cold rolling mill for longitudinal flow guiding and transverse flow guiding, and finally, the TC4 titanium alloy plate with isotropy, high strength, high toughness and high plate shape quality is obtained, meanwhile, the cutting waste and process waste are greatly reduced, and the production cost of the TC4 titanium alloy plate is greatly reduced.
Drawings
FIG. 1 is a schematic view of the appearance of a continuous cold rolling die;
FIG. 2 is a schematic diagram of the use method of the continuous cold rolling die;
FIG. 3 is a schematic view of a principle of continuously rolling a titanium alloy sheet using a continuous cold rolling die;
FIG. 4 is a schematic view of the state of the rough rolling longitudinal diversion trench in cooperation with the titanium alloy plate;
FIG. 5 is a schematic view of the rough rolling transverse diversion trench in cooperation with a titanium alloy plate;
FIG. 6 is a schematic view of the bottom structure of a rough rolling guide sink;
FIG. 7 is a schematic view of a state in which a finish rolling longitudinal guide groove is fitted with a titanium alloy plate;
FIG. 8 is a schematic view of a state that a finish rolling transverse diversion trench is matched with a titanium alloy plate;
FIG. 9 is a schematic view of the structure of the bottom of a finish rolling diversion sink;
FIG. 10 is a schematic view of the outer appearance of the straightening mold;
fig. 11 is an enlarged schematic view of a part a of the bottom structure of the leveling groove:
FIG. 12 is a schematic view of the longitudinal corrective mold;
FIG. 13 is an enlarged view of a portion B of the bottom structure of the longitudinal straightening groove;
FIG. 14 is a schematic view of the outer appearance of a lateral straightening mold;
fig. 15 is an enlarged view of a part C of the bottom structure of the transverse straightening groove.
In the figure: 1. continuously cold rolling the die; 1.1, rough rolling a die; 1.1.1, roughly rolling a longitudinal flow guide die; 1.1.1.1, roughly rolling a longitudinal diversion trench; 1.1.2, roughly rolling a transverse diversion die; 1.1.2.1, roughly rolling a transverse diversion trench; 1.2, finish rolling a die; 1.2.1, finish rolling a longitudinal flow guide die; 1.2.1.1, finish rolling the longitudinal diversion trench; 1.2.2, finish rolling a transverse diversion die; 1.2.2.1, finish rolling the transverse diversion trench; 1.3, correcting the die; 1.3.3, straightening grooves; 1.3.1, longitudinally straightening the die; 1.3.1.1, longitudinal correction slots; 1.3.2, transversely correcting the die; 1.3.2.1, a transverse correction slot; 2. a titanium alloy plate; 3. rolling the composite; 4. a reversible cold rolling mill.
Detailed Description
The invention will be explained in more detail by the following examples, which disclose the invention and are intended to protect all technical improvements within the scope of the invention.
The first embodiment is as follows:
a titanium alloy plate continuous cold rolling die is used for continuous cold rolling production of a single titanium alloy plate 2; the continuous cold rolling die 1 comprises a rough rolling die 1.1, a finish rolling die 1.2 and a correcting die 1.3, wherein the yield strength of the rough rolling die 1.1, the finish rolling die 1.2 and the correcting die 1.3 is greater than that of the titanium alloy plate 2 to be rolled; the thickness of the rough rolling die 1.1 is 30 mm, the thickness of the finish rolling die 1.2 is 20 mm, and the thickness of the correcting die 1.3 is 5 mm;
the rough rolling die 1.1 comprises a rough rolling longitudinal flow guide die 1.1.1 and a rough rolling transverse flow guide die 1.1.2; the finish rolling die 1.2 comprises a finish rolling longitudinal flow guide die 1.2.1 and a finish rolling transverse flow guide die 1.2.2;
five rough rolling longitudinal diversion grooves 1.1.1.1 are uniformly distributed on the upper surface of the rough rolling longitudinal diversion die 1.1.1, the length of the rough rolling longitudinal diversion groove 1.1.1 is greater than the length of the titanium alloy plate 2 to be rolled, the width is equal to the width of the titanium alloy plate 2 to be rolled, and a gap is formed between the width of the rough rolling longitudinal diversion groove 1.1.1.1 and the width of the titanium alloy plate 2 to be rolled; five rough rolling transverse diversion grooves 1.1.2.1 are uniformly distributed on the upper surface of the rough rolling transverse diversion die 1.1.2, the length of the rough rolling transverse diversion groove 1.1.2.1 is equal to that of the titanium alloy plate 2 to be rolled, the width of the rough rolling transverse diversion groove is larger than that of the titanium alloy plate 2 to be rolled, and a gap is formed between the length of the rough rolling transverse diversion groove 1.1.2.1 and the length of the titanium alloy plate 2 to be rolled; the bottom surfaces of the rough rolling longitudinal diversion trench 1.1.1.1 and the rough rolling transverse diversion trench 1.1.2.1 are concave surfaces;
five finish rolling longitudinal diversion grooves 1.2.1.1 are uniformly distributed on the upper surface of the finish rolling longitudinal diversion die 1.2.1, the length of the finish rolling longitudinal diversion groove 1.2.1.1 is greater than the length of the titanium alloy plate 2 to be rolled, the width of the finish rolling longitudinal diversion groove is equal to the width of the titanium alloy plate 2 to be rolled, and a gap is formed between the width of the finish rolling longitudinal diversion groove 1.2.1.1 and the width of the titanium alloy plate 2 to be rolled; five finish rolling transverse diversion grooves 1.2.2.1 are uniformly distributed on the upper surface of the finish rolling transverse diversion mold 1.2.2, the length of the finish rolling transverse diversion groove 1.2.2.1 is equal to the length of the titanium alloy plate 2 to be rolled, the width of the finish rolling transverse diversion groove is larger than the width of the titanium alloy plate 2 to be rolled, and a gap is formed between the length of the finish rolling transverse diversion groove 1.2.2.1 and the length of the titanium alloy plate 2 to be rolled; the bottom surfaces of the finish rolling longitudinal diversion trench 1.2.1.1 and the finish rolling transverse diversion trench 1.2.2.1 are convex surfaces;
five correcting grooves 1.3.3 are uniformly distributed on the upper plate surface of the correcting die 1.3, the length and the width of the correcting grooves are equal to the length and the width of the titanium alloy plate 2 to be rolled, a gap is formed between the length and the width of the correcting grooves 1.3.3 and the length and the width of the titanium alloy plate 2 to be rolled, and spherical surfaces are arranged on the bottom surfaces of the correcting grooves 1.3.3 in an array mode.
Example two:
the correcting mould 1.3 comprises a longitudinal correcting mould 1.3.1 and a transverse correcting mould 1.3.2; the upper plate surface of the longitudinal straightening die 1.3.1 is uniformly provided with a plurality of longitudinal straightening grooves 1.3.1.1, and the upper plate surface of the transverse straightening die 1.3.2 is uniformly provided with a plurality of transverse straightening grooves 1.3.2.1; the length and width of the longitudinal correction groove 1.3.1.1 and the transverse correction groove 1.3.2.1 are equal to the length and width of the titanium alloy plate 2 to be rolled, and a gap is formed between the length and width of the longitudinal correction groove 1.3.1.1 and the transverse correction groove 1.3.2.1 and the length and width of the titanium alloy plate 2 to be rolled; the bottom of the longitudinal straightening groove 1.3.1.1 is provided with columnar convex surfaces parallel to the length direction of the longitudinal straightening die 1.3.1 in an array manner; the bottom array of the transverse straightening groove 1.3.2.1 is provided with columnar convex surfaces parallel to the width direction of the transverse straightening mould 1.3.2.
The following is an example of the rolling production of TC4 titanium alloy plate with the original dimension specification of 2 × 1125 × 1500mm and the finished dimension specification of 0.5 × 1500 × 3000mm, and the using method of the titanium alloy plate continuous cold rolling die is concretely explained as follows:
in the rolling production process of the titanium alloy plate 2, three procedures of rough rolling, finish rolling and straightening rolling are required;
the rough rolling is matched with a rough rolling longitudinal flow guide die 1.1.1 and a rough rolling transverse flow guide die 1.1.2, the sizes of the rough rolling longitudinal flow guide die 1.1.1 and the rough rolling transverse flow guide die 1.1.2 are 30 multiplied by 2000 multiplied by 20000mm, die steel is selected as a material, and the strength and the surface hardness are ensured through heat treatment, surface treatment and surface treatment; five rough rolling longitudinal flow guiding sink grooves 1.1.1.1 are arranged on the rough rolling longitudinal flow guiding die 1.1.1, five rough rolling transverse flow guiding sink grooves 1.1.2.1 are arranged on the rough rolling transverse flow guiding die 1.1.2, the depths of the longitudinal flow guiding sink grooves 1.1.1.1 and the transverse flow guiding sink grooves 1.1.2.1 are both 1.0 mm, and the concavity of the bottom surface is both 0.05 mm; five titanium alloy plates 2 are arranged in a rough rolling longitudinal flow guiding sink groove 1.1.1.1 of a rough rolling longitudinal flow guiding die 1.1.1 to form a rolling composite body 3, firstly, two times of longitudinal flow guiding rough rolling are carried out, then, the titanium alloy plates 2 are arranged in a rough rolling transverse flow guiding sink groove 1.1.2.1 of a rough rolling transverse flow guiding die 1.1.2 to form the rolling composite body 3, and then, two times of transverse flow guiding rough rolling are carried out; in the rough rolling process, flexible clad plates which are 0.5mm thick and made of PVC are arranged on the upper surface of the TC4 plate, and No. 5 rolling process lubricating oil is coated on the upper surface and the lower surface of the titanium alloy plate 2; the rolling mill adopts a four-roller reversible cold rolling mill 4, the diameter of an upper working roller of the rolling mill is 10 percent smaller than that of a lower working roller, the single-pass cold rolling reduction rate is controlled to be 20 to 30 percent, and the rolling speed is controlled to be 0.2 to 0.5 m/s;
the finish rolling is matched with a finish rolling longitudinal flow guide die 1.2.1 and a finish rolling transverse flow guide die 1.2.2, the sizes of the finish rolling longitudinal flow guide die 1.2.1 and a rough rolling transverse flow guide die 1.2.2 are 20 multiplied by 2200 multiplied by 40000mm, die steel is selected as a material, and the strength and the surface hardness are ensured through heat treatment and surface treatment; five finish rolling longitudinal flow guiding sinking grooves 1.2.1.1 are arranged on the finish rolling longitudinal flow guiding die 1.2.1, five finish rolling transverse flow guiding sinking grooves 1.2.2.1 are arranged on the finish rolling transverse flow guiding die 1.2.2, the depths of the longitudinal flow guiding sinking grooves 1.2.1.1 and the transverse flow guiding sinking grooves 1.2.2.1 are both 0.5mm, and the bottom surface convexity is both 0.05 mm; the titanium alloy plate 2 after rough rolling is arranged in a rolled longitudinal flow guiding sink groove 1.2.1.1 of a finish rolling longitudinal flow guiding die 1.2.1 to form a rolling complex 3, firstly, two times of longitudinal flow guiding finish rolling are carried out, then, the titanium alloy plate 2 is arranged in a finish rolling longitudinal flow guiding sink groove 1.2.2.1 of a finish rolling transverse flow guiding die 1.2.2 to form the rolling complex 3, and then, two times of transverse flow guiding finish rolling are carried out; in the finish rolling process, flexible clad plates with the thickness of 0.3 mm and made of PVC are arranged on the upper surface of a TC4 plate, and lubricating oil for No. 5 rolling process is coated on the upper surface and the lower surface of a titanium alloy plate 2; the rolling mill adopts a four-roller reversible cold rolling mill 4, the diameter of an upper working roller of the rolling mill is 5 percent smaller than that of a lower working roller, the single-pass cold rolling reduction rate is controlled to be 15 to 20 percent, and the rolling speed is controlled to be 0.5 to 1.0 m/s;
the straightening rolling is matched with a longitudinal straightening die 1.3.1 and a transverse straightening die 1.3.2, the dimensions of the longitudinal straightening die 1.3.1 and the transverse straightening die 1.3.2 are 5.0 multiplied by 2200 multiplied by 40000mm, die steel is selected as a material, and the strength and the surface hardness are ensured through heat treatment and surface treatment; five longitudinal correction sinking grooves 1.3.1.1 are formed in the longitudinal correction die 1.3.1, five transverse correction sinking grooves 1.3.2.1 are formed in the transverse correction die 1.3.2, the depths of the longitudinal correction sinking grooves 1.3.1.1 and the transverse correction sinking grooves 1.3.2.1 are 0.5mm, and columnar convex surfaces with the convexity of 0.02 mm are arranged in the bottom surface array; the titanium alloy plate 2 after finish rolling is arranged in a longitudinal straightening sinking groove 1.3.1.1 of a longitudinal straightening die 1.3.1 to form a rolling composite body 3, firstly, longitudinal straightening rolling is carried out for one time, then, the titanium alloy plate 2 is arranged in a transverse straightening sinking groove 1.3.2.1 of a transverse straightening die 1.3.2 to form the rolling composite body 3, and then, transverse straightening rolling is carried out for one time; turning the titanium alloy plate 2 to the upper surface and the lower surface, and repeating the straightening rolling process; in the straightening rolling process, No. 5 rolling process lubricating oil is coated on the upper surface and the lower surface of the titanium alloy plate 2; the rolling mill adopts a four-roller reversible cold rolling mill, the diameter of an upper working roller of the rolling mill is 1.5 percent smaller than that of a lower working roller, the rolling reduction of single-pass cold rolling is controlled to be 2.0 percent, and the rolling speed is controlled to be 1.5 m/s;
after the temper rolling is finished, the TC4 titanium alloy plate is cut into a finished plate with the size of 0.5 multiplied by 1500 multiplied by 3000 mm.
The part of the utility model not detailed is prior art.
Claims (8)
1. A titanium alloy plate continuous cold rolling die is used for continuous cold rolling production of a single titanium alloy plate (2); the method is characterized in that: the continuous cold rolling die (1) is rectangular plate-shaped, and a plurality of sinking grooves are uniformly distributed on the upper plate surface; when the titanium alloy plates are produced in a cold rolling mode, a plurality of titanium alloy plates are arranged in a sink groove of a continuous cold rolling die (1), and the continuous cold rolling die (1) drives a plurality of titanium alloy plates (2) to perform reciprocating multi-pass continuous rolling through a reversible cold rolling mill;
the continuous cold rolling die (1) comprises a rough rolling die (1.1), a finish rolling die (1.2) and a correcting die (1.3), wherein the yield strength of the rough rolling die (1.1), the finish rolling die (1.2) and the correcting die (1.3) is greater than that of the titanium alloy plate (2) to be rolled; the rough rolling die (1.1) comprises a rough rolling longitudinal flow guide die (1.1.1) and a rough rolling transverse flow guide die (1.1.2); the finish rolling die (1.2) comprises a finish rolling longitudinal flow guide die (1.2.1) and a finish rolling transverse flow guide die (1.2.2);
the device comprises a rough rolling longitudinal flow guide die (1.1.1), a rough rolling transverse flow guide die (1.1.2), a finish rolling longitudinal flow guide die (1.2.1), a finish rolling transverse flow guide die (1.2.2) and a correction die (1.3), wherein the rough rolling longitudinal flow guide die (1.1.1), the rough rolling transverse flow guide die (1.1.2), the finish rolling longitudinal flow guide die (1.2.1) and the finish rolling transverse flow guide die (1.2.2) are all plate-shaped, a plurality of flow guide grooves are uniformly distributed on the upper plate surface of the rough rolling longitudinal flow guide die (1.1), the rough rolling transverse flow guide die (1.2.2) and the finish rolling transverse flow guide die (1.2.2), and a plurality of correction grooves (1.3.3) are uniformly distributed on the upper plate surface of the correction die (1.3).
2. The continuous cold rolling die for the titanium alloy sheet as claimed in claim 1, wherein: the guide groove of the upper plate surface of the rough rolling longitudinal guide die (1.1.1) is a rough rolling longitudinal guide groove (1.1.1.1), the length of the rough rolling longitudinal guide groove (1.1.1.1) is greater than the length of the titanium alloy plate (2) to be rolled, the width of the rough rolling longitudinal guide groove is equal to the width of the titanium alloy plate (2) to be rolled, and a gap is arranged between the width of the rough rolling longitudinal guide groove (1.1.1.1) and the width of the titanium alloy plate (2) to be rolled; the guide groove of the upper plate surface of the rough rolling transverse guide die (1.1.2) is a rough rolling transverse guide groove (1.1.2.1), the length of the rough rolling transverse guide groove (1.1.2.1) is equal to that of the titanium alloy plate (2) to be rolled, the width of the rough rolling transverse guide groove is larger than that of the titanium alloy plate (2) to be rolled, and a gap is arranged between the length of the rough rolling transverse guide groove (1.1.2.1) and the length of the titanium alloy plate (2) to be rolled;
the guide groove on the upper plate surface of the finish rolling longitudinal guide die (1.2.1) is a finish rolling longitudinal guide groove (1.2.1.1), the length of the finish rolling longitudinal guide groove (1.2.1.1) is greater than the length of the titanium alloy plate (2) to be rolled, the width of the finish rolling longitudinal guide groove is equal to the width of the titanium alloy plate (2) to be rolled, and a gap is arranged between the width of the finish rolling longitudinal guide groove (1.2.1.1) and the width of the titanium alloy plate (2) to be rolled; the guide groove on the upper plate surface of the finish rolling transverse guide die (1.2.2) is a finish rolling transverse guide groove (1.2.2.1), the length of the finish rolling transverse guide groove (1.2.2.1) is equal to that of the titanium alloy plate (2) to be rolled, the width of the finish rolling transverse guide groove is larger than that of the titanium alloy plate (2) to be rolled, and a gap is arranged between the length of the finish rolling transverse guide groove (1.2.2.1) and the length of the titanium alloy plate (2) to be rolled;
the length and the width of the correcting groove (1.3.3) on the upper plate surface of the correcting die (1.3) are equal to the length and the width of the titanium alloy plate (2) to be rolled, and a gap is arranged between the length and the width of the correcting groove (1.3.3) and the length and the width of the titanium alloy plate (2) to be rolled.
3. The continuous cold rolling die for the titanium alloy sheet as claimed in claim 2, wherein: the depth of the rough rolling longitudinal diversion trench (1.1.1.1) and the depth of the rough rolling transverse diversion trench (1.1.2.1) is the thickness of the titanium alloy plate (2) after rough rolling; the bottom surfaces of the rough rolling longitudinal diversion trench (1.1.1.1) and the rough rolling transverse diversion trench (1.1.2.1) are concave surfaces.
4. The continuous cold rolling die for the titanium alloy sheet as claimed in claim 2, wherein: the depth of the finish rolling longitudinal diversion trench (1.2.1.1) and the depth of the finish rolling transverse diversion trench (1.2.2.1) is the thickness of the finish rolled titanium alloy plate (2); the bottom surfaces of the finish rolling longitudinal diversion trench (1.2.1.1) and the finish rolling transverse diversion trench (1.2.2.1) are convex surfaces.
5. The continuous cold rolling die for the titanium alloy sheet as claimed in claim 2, wherein: the depth of the correction groove (1.3.3) is equal to the thickness of the finished product of the titanium alloy plate (2); the bottom surface array of the correction grooves (1.3.3) is provided with spherical surfaces.
6. The continuous cold rolling die for the titanium alloy sheet as claimed in claim 1, wherein: the correcting mould (1.3) comprises a longitudinal correcting mould (1.3.1) and a transverse correcting mould (1.3.2); a plurality of longitudinal correction grooves (1.3.1.1) are uniformly distributed on the upper plate surface of the longitudinal correction die (1.3.1), and a plurality of transverse correction grooves (1.3.2.1) are uniformly distributed on the upper plate surface of the transverse correction die (1.3.2); the length and width of the longitudinal correction groove (1.3.1.1) and the transverse correction groove (1.3.2.1) are equal to the length and width of the titanium alloy plate (2) to be rolled, and gaps are arranged between the length and width of the longitudinal correction groove (1.3.1.1) and the transverse correction groove (1.3.2.1) and the length and width of the titanium alloy plate (2) to be rolled.
7. The continuous cold rolling die for the titanium alloy sheet as claimed in claim 6, wherein: the bottom of the longitudinal correction groove (1.3.1.1) is provided with columnar convex surfaces parallel to the length direction of the longitudinal correction mould (1.3.1) in an array manner; the bottom of the transverse correction groove (1.3.2.1) is provided with columnar convex surfaces parallel to the width direction of the transverse correction die (1.3.2).
8. The continuous cold rolling die for the titanium alloy sheet as claimed in claim 1, wherein: the thickness of the continuous cold rolling die (1) ranges from 5mm to 30 mm.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202122945414.XU CN216420630U (en) | 2021-11-26 | 2021-11-26 | Continuous cold rolling die for titanium alloy plate |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202122945414.XU CN216420630U (en) | 2021-11-26 | 2021-11-26 | Continuous cold rolling die for titanium alloy plate |
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