Titanium-aluminum composite material, forming process thereof, and titanium-aluminum composite material shell

Abstract

The application discloses a titanium-aluminum composite material and a forming process thereof and a titanium-aluminum composite material shell. The forming process of the titanium-aluminum composite material comprises the following steps: S1, providing a titanium bar raw material, and performing first rolling treatment on the titanium bar raw material to obtain a first composite plate; the first rolling treatment comprises primary rolling and secondary rolling; S2, providing an aluminum profile, and the aluminum profile is provided with a matched connecting structure on one side surface of the aluminum profile, which is matched with the first composite plate; and S3, pressing the first composite plate obtained in the step S1 and the aluminum profile in the step S2 to obtain the titanium-aluminum composite material. The titanium-aluminum composite material is obtained by compounding the first composite plate prepared from titanium alloy and aluminum alloy and the aluminum profile, problems existing in the separate application of the two materials are overcome, the performance of electronic products is improved, and the production cost is reduced; the cutting of the raw material is avoided, the raw material loss is reduced, and the effective utilization rate of the raw material is improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of composite material forming, in particular to a titanium-aluminum composite material, a forming process thereof and a titanium-aluminum composite material shell. BACKGROUND

[0002] With the continuous upgrading and popularization of electronic products, the competition in the electronic product market is becoming increasingly fierce. Low production cost makes electronic products have greater profit space and competitive advantage. Titanium alloy and aluminum alloy are widely used in the manufacture of electronic products. However, when the two materials are used separately in the manufacture of electronic products, there are the following disadvantages: the price of titanium alloy material itself is high, and the processing difficulty is large, resulting in high cost; while aluminum alloy has low cost, but it is insufficient in strength and easy to wear; in addition, the long processing time of the shell of the electronic product in the prior art and the low effective utilization rate of raw materials make the production process of the shell at a disadvantage in terms of processing cost and material cost. Therefore, how to obtain a shell material and its forming process which is efficient, has high effective utilization rate of raw materials, can ensure the overall performance and quality of electronic products and can reduce production cost is very important. SUMMARY

[0003] The purpose of the present application is to solve the above problems and provide a titanium-aluminum composite material and its forming process which has high processing efficiency, high effective utilization rate of raw materials and low production cost, and a titanium-aluminum composite material shell.

[0004] In order to solve the above technical problems, the technical scheme adopted by the present application is as follows:

[0005] A forming process of a titanium-aluminum composite material, comprising the steps of:

[0006] S1: providing a titanium bar raw material, and performing first rolling treatment on the titanium bar raw material to obtain a first composite plate; the first rolling treatment comprises primary rolling and secondary rolling;

[0007] S2: providing an aluminum profile, and the aluminum profile is provided with a matching connection structure on one side surface thereof, which matches the first composite plate;

[0008] S3: pressing the first composite plate obtained in step S1 and the aluminum profile in step S2 to obtain a titanium-aluminum composite material.

[0009] Preferably, the primary rolling specifically comprises the steps of: heating the titanium rod raw material by a first heating device, and then performing first rolling treatment on the heated titanium rod raw material by a first rolling device to obtain a first forming body with rectangular protrusions on one side surface; the distance between two adjacent rectangular protrusions is 0.5-1.5 mm, and the height of the rectangular protrusion is 0.5-1 mm; the transmission speed of the titanium rod raw material in the first rolling device is 900-1500 mm / min; the heating temperature of the first heating device is 900-1000℃; the first rolling device comprises a first horizontal roller group arranged symmetrically and a first vertical roller group vertically arranged between the first horizontal roller group and cooperating with the first horizontal roller group, and the first horizontal roller group and the first vertical roller group enclose a first forming channel; the first vertical roller group is selectively provided with a first forming protrusion on the surface, and the first forming protrusion is used to form the rectangular protrusion on one side surface of the first forming body; the corner area of the first forming protrusion is rounded.

[0010] Preferably, the secondary rolling specifically comprises the steps of: heating the titanium rod raw material after the primary rolling by a second heating device, and then performing rolling on the top surface of the rectangular protrusion of the first forming body by a second rolling device to form a first forming protrusion with a groove and to form a dovetail groove between two adjacent first forming protrusions to obtain a first composite plate; the transmission speed of the first forming body in the second rolling device is 900-1500 mm / min; and the heating temperature of the second heating device is 900-1000℃.

[0011] Preferably, the second rolling device comprises a second horizontal roller group arranged symmetrically and a second vertical roller group vertically arranged between the second horizontal roller group and cooperating with the second horizontal roller group, and the second horizontal roller group and the second vertical roller group enclose a second forming channel; the second vertical roller group is selectively provided with a second forming protrusion on the surface, and the second forming protrusion is used to press the top surface of the rectangular protrusion formed by the primary rolling, to form a groove in the middle area of the top surface of the rectangular protrusion and to expand the two end portions outward to form a first forming protrusion with a groove and to form a dovetail groove between two adjacent first forming protrusions to obtain a first composite plate.

[0012] Preferably, the step S3 specifically comprises the steps of: heating the first composite plate and the aluminum profile together through a third heating device, and then pressing them together by using a third rolling device to make the first composite plate and the aluminum profile connect with each other; the heating temperature of the third heating device is 450-550 ℃; the transmission speed of the third rolling device is 900-1500 mm / min; the third rolling device comprises a third horizontal roller group arranged symmetrically and a third vertical roller group arranged vertically between the third horizontal roller groups, and the third horizontal roller group and the third vertical roller group form a third forming channel for pressing the first composite plate and the aluminum profile.

[0013] The application further discloses a titanium-aluminum composite material prepared by the forming process of the titanium-aluminum composite material.

[0014] Preferably, one side surface of the first composite plate is provided with a first forming protrusion, and a dovetail groove is formed between two adjacent first forming protrusions; a groove is arranged on the top surface of the first forming protrusion, and the edge area of the groove extends outward; the surface of the aluminum profile matched with the first composite plate is provided with a connecting groove matched with the first forming protrusion and a connecting protrusion matched with the dovetail groove.

[0015] The third object of the application is to disclose a titanium-aluminum composite material shell prepared by the titanium-aluminum composite material prepared by the forming process of the titanium-aluminum composite material.

[0016] Preferably, the preparation method of the shell specifically comprises the steps of:

[0017] S4 cutting: cutting the titanium-aluminum composite material obtained in the step S3 to obtain a first plate;

[0018] S5 pre-bending: pre-bending the first plate obtained after the step S4 to make the two ends of the first plate respectively bend relative to the plane of the first plate to form a first angle; the first angle is 75-80°;

[0019] S6 bending forming: bending the first plate obtained after the step S5 to make the two ends of the first plate respectively bend to be perpendicular to the plane of the first plate to obtain a second plate with a bending structure;

[0020] S7 shaping: shaping the second plate obtained in the step S6;

[0021] S8: the second plate material after the shaping treatment in step S7 and the first plate material obtained in step S4 are respectively divided to obtain a plurality of first and second component parts.

[0022] Preferably, the preparation method of the shell further comprises the steps of: respectively performing CNC processing on the obtained first and second component parts; combining the first and second component parts after the CNC processing, and then performing nano-injection molding.

[0023] The present application has at least the following beneficial effects:

[0024] The present application discloses a titanium-aluminum composite material, a preparation method thereof, and a titanium-aluminum composite material shell. The titanium-aluminum composite material is obtained by combining a first composite plate material prepared from a titanium alloy and an aluminum alloy and an aluminum profile, so that the properties of the titanium alloy and the aluminum alloy are complementary, and a titanium-aluminum composite material with high strength, lightweight, corrosion resistance, fatigue resistance, and processability is prepared. The problems existing when the two materials are used alone are overcome, the performance of electronic products is improved, and the production cost is reduced. At the same time, in the forming process of the titanium-aluminum composite material, the rod-shaped raw material is treated by multiple rolling processes to obtain a plate material with a protrusion and groove structure connection structure on the surface, which avoids cutting the raw material, reduces raw material loss, improves the effective utilization rate of raw materials, and further reduces production costs. BRIEF DESCRIPTION OF DRAWINGS

[0025] Figure 1 It is a schematic diagram of the structural changes from the titanium rod raw material to the titanium-aluminum composite material in the forming process of the titanium-aluminum composite material of the present application.

[0026] Figure 2 It is a schematic diagram of the structural changes from the titanium-aluminum composite material to the first and second component parts in the shell preparation method of the present application.

[0027] Figure 3 It is a schematic diagram of the cross section of the first formed body.

[0028] Figure 4 It is a schematic diagram of the cross section of the first composite plate material.

[0029] Figure 5 It is a schematic diagram of the structure of the shell obtained in Example 2.

[0030] Wherein, 1 is a titanium rod raw material, 2 is a first formed body, 21 is a rectangular protrusion, 3 is a first composite plate material, 31 is a first formed protrusion, 4 is an aluminum profile, 5 is a first plate material, 6 is a second plate material, 7 is a first component part, and 8 is a second component part. DETAILED DESCRIPTION

[0031] For the purpose of promoting the understanding of the present application, the present application will be more fully described by referring to the attached drawings. These drawings set forth preferred embodiments of the application and are not intended to limit the application to the embodiments described herein. Instead, these embodiments are presented by way of example or illustration.

[0032] In the present application, the description such as "first", "second" and the like are only for the purpose of description and can not be understood as indicating or implying the relative importance or implicitly indicating the number of the technical features indicated.

[0033] In the description of the present application, the terms "top", "bottom", "inner", "outer" and the like indicate the orientation or positional relationship shown in the drawings, which are only for the purpose of describing the present application and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore can not be understood as limiting the present application.

[0034] Embodiment 1

[0035] The embodiment of the present application discloses a forming process of titanium-aluminum composite material, wherein the structural change from titanium rod raw material to titanium-aluminum composite material is as shown in the figure, and the forming process comprises the following steps: Figure 1

[0036] S1: providing a titanium rod raw material 1, and performing first rolling treatment on the titanium rod raw material 1 to obtain a first composite plate 3; the first rolling treatment comprises primary rolling and secondary rolling;

[0037] S2: providing an aluminum profile 4, and the aluminum profile 4 is provided with a matching connection structure on one side surface, which matches the first composite plate;

[0038] S3: pressing the first composite plate 3 obtained in step S1 and the aluminum profile 4 in step S2 to obtain a titanium-aluminum composite material.

[0039] The preparation method of the titanium-aluminum composite material disclosed by the present application rolls and forms two raw materials of titanium and aluminum to obtain a titanium-aluminum composite material, so that the properties of titanium alloy and aluminum alloy are complementary, a titanium-aluminum composite material with high strength, light weight, corrosion resistance, fatigue resistance and processability and other advantages is prepared, the problems existing when the two materials are used alone are overcome, and the performance of electronic products is improved and the production cost is reduced.

[0040] ​In addition, in the application, the titanium rod raw material 1 is directly processed by multiple rolling processes to form the first composite plate 3 and the aluminum profile 4; the titanium rod raw material 1 does not need to be cut during the preparation process, which reduces the loss of titanium raw materials, improves the effective utilization rate of titanium raw materials, reduces the production cost of products, and improves the market competitiveness.

[0041] The first rolling specifically includes the following steps: heating the titanium rod raw material 1 by using a first heating device, and then performing first rolling processing on the heated titanium rod raw material 1 by using a first rolling device to obtain a first forming body 2 having a rectangular protrusion 21 on one side surface; as shown in the figure, Figure 3 The distance between the two adjacent rectangular protrusions 21 is 0.5-1.5 mm, and the height of the rectangular protrusion 21 is 0.5-1 mm; at this time, a rectangular groove is formed between the two rectangular protrusions 21. The corner region of the rectangular protrusion 21 is rounded to facilitate molding and separation of the rectangular protrusion 21 from the first rolling device; the transmission speed of the titanium rod raw material 1 in the first rolling device is 900-1500 mm / min, that is, the titanium rod raw material 1 is driven by the first rolling device at a speed of 900-1500 mm / min; the heating temperature of the first heating device is 900-1000℃; the first rolling device includes a first horizontal rolling wheel group arranged symmetrically and a first vertical rolling wheel group arranged vertically between the first horizontal rolling wheel group and cooperating with the first horizontal rolling wheel group, the first horizontal rolling wheel group and the first vertical rolling wheel group form a first forming channel; the first vertical rolling wheel group is selectively provided with a first forming protrusion 31 on the surface, the first forming protrusion 31 is used to form the rectangular protrusion 21 on one side surface of the first forming body 2; the corner region of the first forming protrusion 31 is rounded; when the first rolling is performed, the titanium rod raw material 1 passes through the first forming channel, and under the joint action of the first horizontal rolling wheel group and the first vertical rolling wheel group, the titanium rod raw material 1 is made into the first forming body 2 having the rectangular protrusions 21 arranged at intervals on one side surface.

[0042] The secondary rolling specifically comprises the steps of: heating the titanium bar raw material 1 after the primary rolling through a second heating device, and using a second rolling device to roll the top surface of the rectangular protrusion 21 of the first forming body 2 to form the first forming protrusion 31 with a groove, and to form a dovetail groove between the two adjacent first forming protrusions 31, so as to obtain the first composite plate 3; the transmission speed of the first forming body 2 in the second rolling device is 900-1500 mm / min, that is, the first forming body 2 is driven by the second rolling device at a speed of 900-1500 mm / min; in some embodiments, the transmission speed of the first forming body 2 in the second rolling device is preferably 1000 mm / min; the heating temperature of the second heating device is 900-1000℃; in some embodiments, the heating temperature of the second heating device is 950℃. The included angle between the groove edge and the groove bottom of the dovetail groove is 25-35°, preferably 30°.

[0043] The second rolling device comprises a second horizontal roller group arranged symmetrically, and a second vertical roller group vertically arranged between the second horizontal roller group and matched with the second horizontal roller group, the second horizontal roller group and the second vertical roller group form a second forming channel; the second vertical roller group selectively has a second forming protrusion on the surface, which is used to press the top surface of the rectangular protrusion 21 formed by the primary rolling, and to press the top surface of the rectangular protrusion 21 to form a groove in the middle region and to expand the two end portions outward, to form the first forming protrusion 31 with a groove, and to form a dovetail groove between the two adjacent first forming protrusions 31, so as to obtain the first composite plate 3; when the secondary rolling is performed, the first forming body 2 passes through the second forming channel, and under the joint action of the second horizontal roller group and the second vertical roller group, the first forming body 2 is made into the first composite plate 3 with the first forming protrusions 31 arranged at intervals on one side surface.

[0044] The step S3 specifically comprises the steps of: after the first composite plate 3 and the aluminum profile 4 are heated together, the third rolling device is used for pressing, so that the first composite plate 3 is connected with the aluminum profile 4; the heating temperature of the third heating device is 450-550 DEG C; the transmission speed of the third rolling device is 900-1500 mm / min, that is, the first composite plate 3 and the aluminum profile 4 are driven by the second rolling device at a speed of 900-1500 mm / min; the third rolling device comprises a third horizontal roller group arranged symmetrically and a third vertical roller group vertically arranged between the third horizontal roller group, and the third horizontal roller group and the third vertical roller group form a third forming channel for pressing the first composite plate 3 and the aluminum profile 4. When in use, the first composite plate 3 and the aluminum profile 4 pass through the third forming channel together, and under the joint action of the third horizontal roller group and the third vertical roller group, the first composite plate 3 and the aluminum profile 4 are combined.

[0045] The embodiment of the present application also discloses a titanium-aluminum composite material, which is prepared by the forming process of the titanium-aluminum composite material.

[0046] As shown in Figure 4 The first composite plate 3 is provided with a first forming protrusion 31 on one side, and a dovetail groove is formed between two adjacent first forming protrusions 31; a groove is arranged on the top surface of the first forming protrusion 31, and the edge area of the groove extends outward; the outward direction refers to the direction away from the central area of the groove. The aluminum profile 4 is provided with a connecting groove matched with the first forming protrusion 31 and a connecting protrusion matched with the dovetail groove on the surface matched with the first composite plate 3.

[0047] A titanium-aluminum composite material shell is prepared from the titanium-aluminum composite material prepared by the forming process of the titanium-aluminum composite material. The structural change from the titanium-aluminum composite material to the first part and the second part in the shell preparation method of the present application is shown in Figure 2 .

[0048] The shell preparation method specifically comprises the steps of:

[0049] S4 cutting: cutting the titanium-aluminum composite material obtained in step S3 to obtain a first plate 5

[0050] S5 pre-bending: the first plate 5 obtained after step S4 is pre-bent, so that the two ends of the first plate 5 are respectively bent relative to the plane to form a first angle; the first angle is 75-80 DEG.

[0051] S6 bending forming: the first plate 5 after step S5 is treated to be bent and formed, so that the two ends of the first plate 5 are respectively bent to be perpendicular to the plane of the first plate 5, to obtain a second plate 6 with a bent structure;

[0052] S7 shaping: the second plate 6 obtained in step S6 is subjected to shaping treatment;

[0053] S8 striping: the second plate 6 after step S7 shaping treatment and the first plate 5 obtained in step S4 are respectively divided to obtain a plurality of first parts 7 and second parts 8.

[0054] Further comprising steps: the obtained first parts 7 and second parts 8 are respectively subjected to CNC processing; the first parts 7 and the second parts 8 after CNC processing are combined, and then nano-injection is performed.

[0055] The titanium-aluminum composite material forming process can be widely applied to the forming of the shell of electronic products including mobile phones, and in particular can be applied to the manufacture of components such as shell frames, housings, keyboards and cameras; at the same time, it can be understood that the titanium-aluminum composite material forming process is also suitable for the composite forming of other materials to achieve the purpose of improving the effective utilization of raw materials and reducing production costs.

[0056] Example 2

[0057] The titanium-aluminum composite material preparation method and the shell are specifically described by taking the mobile phone shell as an example.

[0058] The preparation method of the mobile phone shell comprises the following steps:

[0059] First, the titanium-aluminum composite material is prepared, comprising the following steps:

[0060] S1: providing a titanium rod raw material 1, and performing first rolling treatment on the titanium rod raw material 1 to obtain a first composite plate 3; the first rolling treatment comprises primary rolling and secondary rolling;

[0061] The primary rolling specifically includes the steps that: after the titanium rod raw material 1 is heated by a first heating device, the first rolling device is used to perform first rolling treatment on the heated titanium rod raw material 1, and a first forming body 2 with rectangular protrusions 21 on one side surface is obtained; the distance between two adjacent rectangular protrusions 21 is 1.0 mm, the height of the rectangular protrusion 21 is 0.7 mm, and a rectangular groove is formed between the two rectangular protrusions 21 at this time; the corner region of the rectangular protrusion 21 is rounded to facilitate forming and separation of the rectangular protrusion 21 from the first rolling device; the transmission speed of the titanium rod raw material 1 in the first rolling device is 1000 mm / min, that is, the titanium rod raw material 1 is driven by the first rolling device at a speed of 1000 mm / min; the heating temperature of the first heating device is 950℃; the first rolling device includes a first horizontal roller group and a first vertical roller group which are symmetrically arranged and vertically arranged between the first horizontal roller group and cooperated with the first horizontal roller group, and the first horizontal roller group and the first vertical roller group form a first forming channel; the first vertical roller group is selectively provided with a first forming protrusion 31 on the surface, and the first forming protrusion 31 is used to form the rectangular protrusion 21 on one side of the first forming body 2; the corner region of the first forming protrusion 31 is rounded; when the primary rolling is performed, the titanium rod raw material 1 passes through the first forming channel, and under the joint action of the first horizontal roller group and the first vertical roller group, the titanium rod raw material 1 is made into the first forming body 2 with the rectangular protrusions 21 arranged at intervals on one side.

[0062] The secondary rolling specifically includes the steps that: after the titanium rod raw material 1 after the primary rolling is heated by a second heating device, the second rolling device is used to perform rolling on the top surface of the rectangular protrusion 21 of the first forming body 2 to form the first forming protrusion 31 with a groove and form a dovetail groove between two adjacent first forming protrusions 31, so as to obtain the first composite plate 3; the transmission speed of the first forming body 2 in the second rolling device is 1000 mm / min, that is, the first forming body 2 is driven by the second rolling device at a speed of 1000 mm / min; the heating temperature of the second heating device is 950℃.

[0063] S2: providing an aluminum profile 4, and the aluminum profile 4 is provided with a matching connection structure matched with the first composite plate on one side surface;

[0064] S3: pressing the first composite plate 3 obtained in step S1 and the aluminum profile 4 in step S2 to obtain a titanium-aluminum composite material.

[0065] Step S3 specifically includes the following steps: The first composite plate 3 and the aluminum profile 4 are heated together by a third heating device, and then pressed together using a third rolling device, so that the first composite plate 3 and the aluminum profile 4 are connected. The heating temperature of the third heating device is 500℃; the transmission speed of the third rolling device is 1000mm / min, that is, the first composite plate 3 and the aluminum profile 4 are driven by the second rolling device at a speed of 1000mm / min; the third rolling device includes symmetrically arranged third horizontal roller groups and a third vertical roller group vertically arranged between the third horizontal roller groups, the third horizontal roller groups and the third vertical roller groups forming a third forming channel for pressing the first composite plate 3 and the aluminum profile 4. In use, the first composite plate 3 and the aluminum profile 4 pass through the third forming channel together, and under the combined action of the third horizontal roller groups and the third vertical roller groups, the first composite plate 3 and the aluminum profile 4 are joined together.

[0066] The shell is then prepared using the obtained titanium-aluminum composite material, including the following steps:

[0067] S4 Cutting: Cut the titanium-aluminum composite material obtained in step S3 to obtain the first plate 5;

[0068] S5 Pre-bending: The first plate 5 obtained after step S4 is pre-bent so that the two ends of the first plate 5 are bent relative to the plane of the first plate 5 to form a first angle; the first angle is 80°.

[0069] S6 Bending and forming: The first plate 5 after step S5 is bent and formed so that both ends of the first plate 5 are bent perpendicular to the plane of the first plate 5, so as to obtain the second plate 6 with a bending structure.

[0070] S7 Shaping: The second plate 6 obtained in step S6 is shaped.

[0071] S8 Slitting: The second sheet material 6 after shaping in step S7 and the first sheet material 5 obtained in step S4 are respectively slid to obtain several first components 7 and second components 8. For example... Figure 5 As shown, the first component 7 serves as the top and bottom edges of the housing, and the second component 8 serves as the side edge of the housing. The top and bottom edges are symmetrically arranged, and the side edge is vertically arranged between the top and bottom edges.

[0072] The first component 7 and the second component 8 are respectively subjected to CNC processing; the first component 7 and the second component 8 subjected to CNC processing are combined and then subjected to nano-injection to obtain the shell. The obtained shell is a titanium-aluminum composite shell, which has the characteristics of titanium and aluminum, so that the performance of titanium alloy and aluminum alloy is complementary, and a shell with high strength, light weight, corrosion resistance, fatigue resistance and processability and other advantages is prepared, the problems existing when the two materials are applied alone are overcome, the performance of the electronic product is improved, and the production cost is reduced. The preparation process of the shell directly uses titanium rods as raw materials, and the rolling forming mode improves the effective utilization rate of titanium raw materials, further reduces the production cost of the shell, and improves the price competitive advantage.

[0073] The technical features of the above embodiments can be combined in any manner. To make the description simple, all possible combinations of the technical features in the above embodiments are not described, but as long as the combinations of the technical features do not contradict, they should be considered as the scope of the present disclosure.

[0074] The above embodiments only express the preferred implementation manners of the present application, and the description is more specific and detailed, but it should not be understood as a limitation on the scope of the patent. It should be pointed out that for ordinary skilled in the art, without departing from the concept of the present application, a number of modifications and improvements can be made, which are all within the scope of the present application. Therefore, the scope of the patent of the present application should be subject to the appended claims.

Claims

1. A forming process for a titanium-aluminum composite material, characterized by, The method comprises the steps of: S1: providing a titanium rod raw material, and performing first rolling treatment on the titanium rod raw material to obtain a first composite plate material; the first rolling treatment comprises primary rolling and secondary rolling; the primary rolling specifically comprises the steps of: heating the titanium rod raw material by using a first heating device, and then performing first rolling treatment on the heated titanium rod raw material by using a first rolling device to obtain a first formed body with rectangular protrusions on one side surface; the distance between two adjacent rectangular protrusions is 0.5-1.5 mm, and the height of the rectangular protrusion is 0.5-1 mm; the transmission speed of the titanium rod raw material in the first rolling device is 900-1500 mm / min; and the heating temperature of the first heating device is 900-1000 ℃; the secondary rolling specifically comprises the steps of: heating the titanium rod raw material after the primary rolling by using a second heating device, and then performing rolling on the top surface of the rectangular protrusion of the first formed body by using a second rolling device to form first formed protrusions with grooves and to form dovetail grooves between two adjacent first formed protrusions, so as to obtain the first composite plate material; the transmission speed of the first formed body in the second rolling device is 900-1500 mm / min; and the heating temperature of the second heating device is 900-1000 ℃; S2: providing an aluminum profile, and the aluminum profile is provided with a matching connection structure on one side surface which matches the first composite plate; S3: pressing the first composite plate material obtained in step S1 and the aluminum profile in step S2 to obtain a titanium-aluminum composite material.

2. The forming process of a titanium-aluminum composite material according to claim 1, characterized by, The first rolling device comprises a first horizontal rolling wheel group arranged symmetrically, a first vertical rolling wheel group vertically arranged between the first horizontal rolling wheel group and matched with the first horizontal rolling wheel group, and a first forming channel formed by the first horizontal rolling wheel group and the first vertical rolling wheel group; one of the first vertical rolling wheel groups is provided with a first forming protrusion on the surface, and the first forming protrusion is used for forming the rectangular protrusion on one side surface of the first formed body; and the corner area of the first forming protrusion is rounded.

3. The forming process of a titanium-aluminum composite material according to claim 1, characterized by, The second rolling device comprises a second horizontal rolling wheel group arranged symmetrically, a second vertical rolling wheel group vertically arranged between the second horizontal rolling wheel group and matched with the second horizontal rolling wheel group, and a second forming channel formed by the second horizontal rolling wheel group and the second vertical rolling wheel group; one of the second vertical rolling wheel groups is provided with a second forming protrusion on the surface, and the second forming protrusion is used for pressing the top surface of the rectangular protrusion formed by the primary rolling, forming a first formed protrusion with a groove in the middle area of the top surface of the rectangular protrusion by pressing the top surface of the rectangular protrusion outward at both ends, and forming dovetail grooves between two adjacent first formed protrusions to obtain the first composite plate material.

4. The forming process of a titanium-aluminum composite material according to claim 1, characterized by, The step S3 specifically comprises the steps of: heating the first composite plate and the aluminum profile together through a third heating device, and then pressing them together by using a third rolling device to make the first composite plate and the aluminum profile connect with each other; the heating temperature of the third heating device is 450-550 ℃; the transmission speed of the third rolling device is 900-1500 mm / min; the third rolling device comprises a third horizontal rolling wheel group arranged symmetrically and a third vertical rolling wheel group arranged vertically between the third horizontal rolling wheel group, and the third horizontal rolling wheel group and the third vertical rolling wheel group form a third forming channel for pressing the first composite plate and the aluminum profile.

5. A titanium-aluminum composite, characterized by: The titanium-aluminum composite material is prepared by the forming process of the titanium-aluminum composite material according to any one of claims 1-4; and the titanium-aluminum composite material comprises a first composite plate and an aluminum profile pressed with a connecting structure arranged on a corresponding surface of the first composite plate.

6. The titanium-aluminum composite of claim 5, wherein: A first forming protrusion is arranged on one side surface of the first composite plate, and a dovetail groove is formed between two adjacent first forming protrusions; a groove is arranged on the top surface of the first forming protrusion, and the edge area of the groove extends outward; a connecting groove matched with the first forming protrusion and a connecting protrusion matched with the dovetail groove are arranged on the surface of the aluminum profile matched with the first composite plate.

7. A titanium-aluminum composite material housing characterized by: The shell is made of the titanium-aluminum composite material prepared by the forming process of the titanium-aluminum composite material according to any one of claims 1-4.

8. The case according to claim 7, characterized in that The preparation method of the shell specifically comprises the steps of: S4 cutting: cutting the titanium-aluminum composite material obtained in step S3 to obtain a first plate; S5 pre-bending: pre-bending the first plate obtained after step S4 to make the two ends of the first plate respectively bend to form a first angle relative to the plane of the first plate; the first angle is 75-80°; S6 bending forming: bending forming the first plate treated in step S5 to make the two ends of the first plate respectively bend to be perpendicular to the plane of the first plate to obtain a second plate with a bending structure; S7 shaping: shaping the second plate obtained in step S6; S8 striping: respectively cutting the second plate treated in step S7 and the first plate obtained in step S4 to obtain a plurality of first parts and second parts.

9. The case of claim 8, wherein, The preparation method of the shell further comprises the steps of: respectively performing CNC processing on the obtained first parts and second parts; combining the first parts and the second parts after CNC processing, and then performing nano-injection molding.

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