Metallic laminated composite, its composite forming method based on pre-deformation and application

Abstract

The application discloses a kind of metal laminated composite material, its based on pre-deformation composite forming method and application, belong to metal laminated composite material field. Including: the softening treatment of the deformed region of component metal material;The surface treatment, pre-deformation and group blank operation of the deformed region in component metal material are carried out, and composite blank is obtained;Wherein, the order of surface treatment, pre-deformation and group blank is adjustable;The deformed region of composite blank is carried out composite forming, and metal laminated composite material is obtained.The pre-deformation before the present application is made by composite forming, and the surface of component metal material is fully free cracking in the case of no constraint, and a large number of prefabricated micro-cracks are generated and more fresh metal is exposed, to provide the ideal surface of subsequent composite forming with greater cracking degree, the composite interface of the prepared metal laminated composite material is strong metallurgical bonding and the bonding performance is high, the material comprehensive performance is excellent, especially suitable for the cup mouth composite forming of vacuum cup composed of heterogeneous metal.

Description

Technical Field

[0001] This invention belongs to the field of metal layered composite materials, specifically relating to a metal layered composite material, its pre-deformation-based composite forming method and application, and is particularly suitable for the composite forming of the mouth of a vacuum insulated cup made of dissimilar metals. Background Technology

[0002] Metal layered composite materials are novel composite materials formed by combining two or more component metal materials with different properties, and they have wide applications in various industries. During the preparation of metal layered composite materials, the degree of cracking on the surface of the component metal materials to be composited is one of the main factors affecting the bonding performance of the composite interface. Therefore, continuously increasing the degree of cracking on the surface of the component metal materials to be composited has always been a goal pursued in the field of metal layered composite material preparation. However, when using traditional composite forming methods such as rolling, drawing, and extrusion to prepare metal layered composite materials, after the component metal materials to be composited are assembled and the composite blank is obtained, during the composite forming process of the composite blank, under the action of external force, due to the mutual restraint of deformation between the component metal materials, especially the mutual compaction and deformation restraint between the surfaces to be composited, the cracking of the surface to be composited of the component metal materials is limited, and the amount of fresh metal exposed is insufficient. As a result, the contact area of ​​fresh metal between the heterogeneous component metal materials at the interface to be composited of the composite blank is still relatively small, which seriously affects the further interdiffusion of atoms at the subsequent composite interface, hinders the realization of strong metallurgical bonding at the composite interface, and restricts the preparation of metal layered composite materials with high interfacial bonding performance.

[0003] Therefore, it is necessary to develop a new method for composite forming of metal layered composite materials. By pre-deforming the component metal materials, the surface to be composited is allowed to crack freely, forming a large number of pre-fabricated microcracks on the surface to be composited, thus exposing more fresh metal. This provides an ideal surface to be composited with a greater degree of cracking for subsequent composite forming, which is of great significance in obtaining metal layered composite materials with high interfacial bonding performance. Summary of the Invention

[0004] The purpose of this invention is to provide a metal layered composite material, its pre-deformation-based composite forming method, and its application. By pre-deforming at least one of the component metal materials to be composited, or by pre-deforming the composite blank, the surfaces of the component metal materials to be composited are allowed to fully and freely crack, generating numerous microcracks and exposing more fresh metal. This solves the problems of insufficient cracking of the surface to be composited, limited exposure of fresh metal, and low interfacial bonding performance in traditional composite forming methods for preparing metal layered composite materials. Furthermore, by combining this method with subsequent cold deformation composite, hot deformation composite, or diffusion heat treatment, the fresh metal contact at the composite interface is more complete, and atomic interdiffusion is increased, resulting in metal layered composite materials with higher interfacial bonding performance. This invention is particularly suitable for the composite forming of the mouth of a vacuum insulated cup made of dissimilar metals.

[0005] According to a first aspect of the present invention, a method for composite forming of metal layered composite materials based on pre-deformation is provided, characterized by comprising the following steps:

[0006] Step 1: Soften the deformable area of ​​the component metal material;

[0007] Step 2: Perform surface treatment, pre-deformation, and blanking operations on the deformable area in the component metal material to obtain the composite blank; wherein, the order of surface treatment, pre-deformation, and blanking is adjustable;

[0008] Step 3: Perform composite forming on the area to be deformed of the composite blank to obtain a metal layered composite material.

[0009] Furthermore, step 2 specifically includes:

[0010] Pre-deform at least one, but not all, of the deformable regions in the constituent metal materials; then, surface treatment is performed on the composite surfaces of the deformable regions in the constituent metal materials; then, the surface-treated constituent metal materials are assembled; finally, pre-deform at least one of the remaining deformable regions in the constituent metal materials to obtain the composite blank.

[0011] Alternatively, the surface of the deformable region of the component metal material is surface treated, then the deformable region of at least one of the surface-treated component metal materials is pre-deformed, and then the surface-treated and pre-deformed component metal materials are assembled to obtain a composite blank with the deformable regions stacked together.

[0012] Alternatively, the surface of the composite material to be deformed in the region to be deformed is subjected to surface treatment, then the surface-treated component metal material is assembled into a blank, and then the region to be deformed is pre-deformed to obtain the composite blank.

[0013] Alternatively, the deformable region of at least one of the component metal materials is pre-deformed, then the composite surface of the deformable region of the component metal material is surface-treated, and then the surface-treated component metal material is assembled to obtain the composite blank.

[0014] Alternatively, the composite blank can be obtained by surface treatment of the deformable region of the component metal material, pre-deformation of at least one but not all of the deformable regions of the component metal material, assembly of the surface-treated component metal material, and finally pre-deformation of the remaining at least one of the deformable regions of the component metal material.

[0015] Furthermore, the constituent metal material is at least one of metal sheet, metal pipe, metal profile, metal rod, metal wire, or metal product; the surface treatment method is at least one of chemical method, physical method, or mechanical method.

[0016] Further, the pre-deformation is at least one of tensile deformation, expansion deformation, or torsional deformation, and the amount of pre-deformation is 1% to 70%; the direction of the expansion deformation is at least one of expansion from the pipe opening to the inside of the metal pipe or expansion from the inside of the metal pipe to the pipe opening.

[0017] Furthermore, the pre-deformation is performed at room temperature.

[0018] Furthermore, in step 3, at least one of cold deformation composite, hot deformation composite, or diffusion heat treatment is used to composite form the deformable area of ​​the composite blank.

[0019] Further, the cold deformation composite is at least one of cold rolling composite, cold drawing composite, cold extrusion composite, cold roll forming composite, cold spinning composite, cold pressing composite, cold die forming composite, or cold forging composite, and the temperature of the cold deformation composite is room temperature or lower than the recrystallization temperature of the component metal material;

[0020] The hot deformation composite is at least one of the following: hot rolling composite, hot drawing composite, hot extrusion composite, hot rolling composite, hot spinning composite, hot pressing composite, hot die pressing composite, or hot forging composite, wherein the temperature of the hot deformation composite is higher or lower than the recrystallization temperature of the component metal material.

[0021] Furthermore, the surface treatment, the pre-deformation, the preform assembly, the cold deformation composite, the hot deformation composite, or the diffusion heat treatment can be performed online or offline.

[0022] The surface treatment, pre-deformation, cold deformation composite, hot deformation composite, or diffusion heat treatment may or may not be assisted by ultrasound.

[0023] According to a second aspect of the present invention, a metal layered composite material is provided, wherein the metal layered composite material is prepared by a pre-deformation-based composite forming method according to any of the above aspects.

[0024] The metal layered composite material is at least one of the following: metal layered composite plate, metal layered composite pipe, metal layered composite profile, metal layered composite rod, metal layered composite wire, or partially composite metal layered composite product.

[0025] According to a third aspect of the technical solution of the present invention, a vacuum insulated cup made of heterogeneous metal is provided, wherein the mouth of the vacuum insulated cup is made of a metal layered composite material as described above.

[0026] The beneficial effects of this invention are:

[0027] (1) The composite forming method of the present invention breaks through the conventional practice of applying external force after the component metal materials are assembled in the preparation of traditional metal layered composite materials, and achieving the formation of composite interface by cracking the surface to be composited under the action of non-single external force and mutual constraint between the surfaces to be composited during the composite forming process. By pre-deforming at least one of the component metal materials to be composited or the composite blank before composite forming, the surface to be composited of the component metal materials is unconstrained and fully free to crack under the action of a single external force, generating a large number of pre-made microcracks and exposing more fresh metal, creating an ideal surface to be composited with a greater degree of cracking. Combined with subsequent cold deformation composite, hot deformation composite or diffusion heat treatment, the fresh metal contact of the composite interface is more sufficient, the atomic interdiffusion is more, and a metal layered composite material with higher interface bonding performance can be obtained.

[0028] (2) The composite forming method of the present invention pre-deforms the deformation areas of different component metal materials before and after the blank assembly, which helps to solve the problem that traditional methods cannot realize the blank assembly of irregular structure component metal materials and the problem that it is difficult to prepare complex structure metal layered composite material products. It is particularly suitable for the composite forming of the mouth of vacuum insulated cups made of heterogeneous metals.

[0029] (3) The composite interface of the metal layered composite material prepared by the present invention has strong metallurgical bonding and high bonding performance, and the material has excellent comprehensive performance. Attached Figure Description

[0030] To more clearly illustrate the technical solutions in the embodiments or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0031] Figure 1 This is a flowchart of a pre-deformation-based composite forming method for metal layered composite materials according to the present invention. Detailed Implementation

[0032] The present invention will be further described in detail below with reference to specific embodiments. This should not be construed as a limitation on the scope of protection of the present invention. Those skilled in the art can make non-essential improvements and adjustments based on the content of the present invention.

[0033] The technical solution of this invention first provides a composite forming method for metal layered composite materials based on pre-deformation, such as... Figure 1 As shown, it includes the following steps:

[0034] Step 101: Soften the deformable area of ​​the component metal material.

[0035] In a preferred embodiment, the component metal material is at least one of metal sheet, metal pipe, metal profile, metal rod, metal wire, or metal product.

[0036] Step 102: Perform surface treatment, pre-deformation, and blanking operations on the deformable area in the component metal material to obtain the composite blank; wherein the order of surface treatment, pre-deformation, and blanking is adjustable.

[0037] In a preferred embodiment, the surface treatment method is at least one of a chemical method, a physical method, or a mechanical method.

[0038] In a preferred embodiment, the pre-deformation is at least one of tensile deformation, expansion deformation, or torsional deformation, and the amount of pre-deformation is 1% to 70%; the direction of the expansion deformation is at least one of expansion from the pipe opening to the inside of the metal pipe or expansion from the inside of the metal pipe to the pipe opening. In a preferred embodiment, the pre-deformation is performed at room temperature.

[0039] In a preferred embodiment, step 102 specifically includes:

[0040] Pre-deformation is performed on at least one, but not all, of the deformable regions of the constituent metal materials. Then, surface treatment is performed on the composite surfaces of the deformable regions of the constituent metal materials. Next, the surface-treated constituent metal materials are assembled into a blank. Finally, pre-deformation is performed on the remaining at least one of the deformable regions of the constituent metal materials to obtain the composite blank.

[0041] In a preferred embodiment, step 102 specifically includes:

[0042] The surface of the region to be deformed of the component metal material is subjected to surface treatment. Then, the region to be deformed of at least one of the surface-treated component metal materials is pre-deformed. The surface-treated and pre-deformed component metal materials are then assembled to obtain a composite blank in which the regions to be deformed are stacked.

[0043] In a preferred embodiment, step 102 specifically includes:

[0044] The composite blank is obtained by surface treatment of the surface to be deformed region of the component metal material, followed by pre-deformation of the surface-treated component metal material, and then pre-deformation of the surface to be deformed region.

[0045] In a preferred embodiment, step 102 specifically includes:

[0046] The deformation region of at least one of the component metal materials is pre-deformed, then the composite surface of the deformation region of the component metal material is surface-treated, and then the surface-treated component metal material is assembled to obtain the composite blank.

[0047] In a preferred embodiment, step 102 specifically includes:

[0048] The composite blank is obtained by surface treatment of the deformable region of the component metal material, pre-deformation of at least one but not all of the deformable regions of the component metal material, assembly of the surface-treated component metal material, and finally pre-deformation of the remaining at least one of the deformable regions of the component metal material.

[0049] Step 103: Perform composite forming on the deformable area of ​​the composite blank to obtain a metal layered composite material.

[0050] In a preferred embodiment, the deformable region of the composite blank is composite-formed by at least one of cold deformation composite, hot deformation composite, or diffusion heat treatment.

[0051] In a preferred embodiment, the cold deformation composite is at least one of cold rolling composite, cold drawing composite, cold extrusion composite, cold roll forming composite, cold spinning composite, cold pressing composite, cold die forming composite, or cold forging composite, and the temperature of the cold deformation composite is room temperature or below the recrystallization temperature of the component metal material.

[0052] In a preferred embodiment, the hot deformation composite is at least one of hot rolling composite, hot drawing composite, hot extrusion composite, hot rolling composite, hot spinning composite, hot pressing composite, hot die pressing composite, or hot forging composite, wherein the temperature of the hot deformation composite is higher or lower than the recrystallization temperature of the component metal material.

[0053] In a preferred embodiment, the surface treatment, the pre-deformation, the preform assembly, the cold deformation composite, the hot deformation composite, or the diffusion heat treatment are performed online or offline.

[0054] In a preferred embodiment, the surface treatment, the pre-deformation, the cold deformation composite, the hot deformation composite, or the diffusion heat treatment may or may not be assisted by ultrasound.

[0055] The present invention also provides a metal layered composite material, which is prepared by a pre-deformation-based composite forming method according to any of the above aspects.

[0056] In a preferred embodiment, the metal layered composite material is at least one of metal layered composite plates, metal layered composite pipes, metal layered composite profiles, metal layered composite rods, metal layered composite wires, or partially composite metal layered composite products.

[0057] The present invention provides a vacuum insulated cup made of heterogeneous metal, wherein the mouth of the vacuum insulated cup is made of the metal layered composite material described above.

[0058] Example 1:

[0059] Composite forming based on pre-deformed TA2 pure titanium / 6061 aluminum alloy layered composite sheet.

[0060] First, the areas to be deformed on TA2 pure titanium sheet and 6061 aluminum alloy sheet are softened. Then, ultrasonic shot peening and grinding wheel polishing are used to treat the surfaces to be composited on the TA2 pure titanium sheet and 6061 aluminum alloy sheet respectively. Next, the areas to be deformed on the surface-treated TA2 pure titanium sheet are subjected to room temperature tensile deformation with a deformation amount of 10%. Then, the surfaces to be composited on the TA2 pure titanium sheet and 6061 aluminum alloy sheet are laminated together to form a blank. Finally, the areas to be deformed on the TA2 pure titanium / 6061 aluminum alloy composite blank are subjected to cold rolling composite forming and hot rolling composite forming to obtain a high-performance TA2 pure titanium / 6061 aluminum alloy layered composite sheet.

[0061] Example 2:

[0062] Composite forming based on pre-deformed TA1 pure titanium / 304 stainless steel layered composite pipe.

[0063] First, the areas to be deformed at the ends of TA1 pure titanium pipes and 304 stainless steel pipes are softened. Then, ultrasonic rolling and diamond grinding are used to treat the surfaces to be composited at the ends of the TA1 pure titanium pipes and 304 stainless steel pipes. Next, the composited surfaces of the TA1 pure titanium pipes and 304 stainless steel pipes are assembled into a blank. Then, the areas to be deformed on the TA1 pure titanium / 304 stainless steel composite pipe blank are subjected to room temperature expansion deformation, with a deformation amount of 30% from the end of the composite pipe blank to the inside. Subsequently, the deformed areas of the end of the TA1 pure titanium / 304 stainless steel composite pipe blank are hot-pressed and composite formed. Finally, diffusion heat treatment is performed to obtain high-performance TA1 pure titanium / 304 stainless steel layered composite pipes.

[0064] Example 3:

[0065] Composite forming based on pre-deformed T2 pure copper / Q235 carbon steel layered composite rods.

[0066] First, the inner surface of the T2 pure copper tube and the deformation area of ​​the Q235 carbon steel bar are softened. Then, the inner surface of the T2 pure copper tube and the surface of the Q235 carbon steel bar are surface treated by wire brush and diamond cup grinding, respectively. Next, the deformation area of ​​the surface-treated Q235 carbon steel bar is subjected to repeated torsional deformation with a deformation amount of 20% at room temperature. Then, the Q235 carbon steel bar is placed into the T2 pure copper tube for assembly. Subsequently, the deformation area of ​​the T2 pure copper / Q235 carbon steel composite bar billet is cold-drawn and composite formed. Finally, diffusion heat treatment is performed to obtain a high-performance T2 pure copper / Q235 carbon steel layered composite bar.

[0067] Comparative Example 1:

[0068] Composite forming of TA2 pure titanium / 6061 aluminum alloy layered composite sheet without pre-deformation.

[0069] First, the areas to be deformed of TA2 pure titanium sheet and 6061 aluminum alloy sheet were softened. Then, ultrasonic shot peening and grinding wheel polishing were used to treat the surfaces to be composited. Next, the surfaces to be composited of TA2 pure titanium sheet and 6061 aluminum alloy sheet were laminated together to form a blank. Finally, the areas to be deformed of the TA2 pure titanium / 6061 aluminum alloy composite blank were subjected to cold rolling composite forming and hot rolling composite forming to obtain a TA2 pure titanium / 6061 aluminum alloy layered composite sheet, whose interfacial shear strength is 10% to 20% lower than that in Example 1.

[0070] Comparative Example 2:

[0071] Composite forming of TA1 pure titanium / 304 stainless steel layered composite pipe without pre-deformation.

[0072] First, the areas to be deformed at the ends of TA1 pure titanium pipes and 304 stainless steel pipes were softened. Then, the surfaces to be composited at the ends of TA1 pure titanium pipes and 304 stainless steel pipes were treated by ultrasonic rolling and diamond grinding. Next, the surfaces to be composited at the ends of TA1 pure titanium pipes and 304 stainless steel pipes were assembled into a blank. Then, the areas to be deformed at the ends of the TA1 pure titanium / 304 stainless steel composite pipe blanks were hot-pressed and composited. Finally, diffusion heat treatment was performed to obtain TA1 pure titanium / 304 stainless steel layered composite pipes, whose interfacial shear strength was 10% to 20% lower than that in Example 2.

[0073] The above are merely specific embodiments of the present invention, but the protection of the present invention is not limited thereto. Any equivalent variations or substitutions of the features of the present technical solution that can be conceived by those skilled in the art are covered within the protection scope of the present invention. The protection scope of the present invention should be determined by the scope of the claims.

Claims

1. A composite forming method for metal layered composite materials based on pre-deformation, characterized in that, The method pre-deforms at least one of the constituent metal materials to be composited before composite forming, allowing the composite surface of the constituent metal materials to crack freely and without constraint under a single external force, generating a large number of pre-fabricated microcracks and exposing more fresh metal, creating an ideal composite surface with a greater degree of cracking. This is combined with subsequent cold deformation composite, hot deformation composite, or diffusion heat treatment, so that the fresh metals at the composite interface have more contact and more atomic interdiffusion, resulting in a metal layered composite material with higher interfacial bonding performance. The composite forming method includes the following steps: Step 1: Soften the deformable area of ​​the component metal material; Step 2: Perform surface treatment, pre-deformation, and blanking operations on the deformable area of ​​the component metal material to obtain a composite blank; wherein, the pre-deformation is at least one of tensile deformation, expansion deformation, or torsional deformation, the deformation amount of the pre-deformation is 1% to 70%, the composite surface of the component metal material is unconstrained during the pre-deformation process, and the order of surface treatment, pre-deformation, and blanking is adjustable; Step 3: Perform composite forming on the area to be deformed of the composite blank to obtain a metal layered composite material.

2. The composite forming method based on pre-deformation according to claim 1, characterized in that, Step 2 specifically includes: Pre-deform at least one, but not all, of the deformable regions in the constituent metal materials; then, surface treatment is performed on the composite surfaces of the deformable regions in the constituent metal materials; then, the surface-treated constituent metal materials are assembled; finally, pre-deform at least one of the remaining deformable regions in the constituent metal materials to obtain the composite blank. Alternatively, the surface of the deformable region of the component metal material is surface treated, then the deformable region of at least one of the surface-treated component metal materials is pre-deformed, and then the surface-treated and pre-deformed component metal materials are assembled to obtain a composite blank with the deformable regions stacked together. Alternatively, the surface of the composite material to be deformed in the region to be deformed is subjected to surface treatment, then the surface-treated component metal material is assembled into a blank, and then the region to be deformed is pre-deformed to obtain the composite blank. Alternatively, the deformable region of at least one of the component metal materials is pre-deformed, then the composite surface of the deformable region of the component metal material is surface-treated, and then the surface-treated component metal material is assembled to obtain the composite blank. Alternatively, the composite blank can be obtained by surface treatment of the deformable region of the component metal material, pre-deformation of at least one but not all of the deformable regions of the component metal material, assembly of the surface-treated component metal material, and finally pre-deformation of the remaining at least one of the deformable regions of the component metal material.

3. The composite forming method based on pre-deformation according to claim 1, characterized in that, The constituent metal material is at least one of metal sheet, metal pipe, metal profile, metal rod, and metal wire; the surface treatment method is at least one of chemical method and physical method.

4. The composite forming method based on pre-deformation according to claim 1, characterized in that, The direction of the expansion deformation is at least one of the following: expansion from the opening of the metal pipe into the pipe or expansion from the inside of the metal pipe into the opening.

5. The composite forming method based on pre-deformation according to claim 1, characterized in that, The pre-deformation is performed at room temperature.

6. The composite forming method based on pre-deformation according to claim 1, characterized in that, In step 3, the area to be deformed of the composite blank is composite formed by at least one of cold deformation composite, hot deformation composite, or diffusion heat treatment.

7. The composite forming method based on pre-deformation according to claim 6, characterized in that, The cold deformation composite is at least one of cold rolling composite, cold drawing composite, cold extrusion composite, cold spinning composite, cold pressing composite, or cold forging composite. The hot deformation composite is at least one of the following: hot rolling composite, hot drawing composite, hot extrusion composite, hot spinning composite, hot pressing composite, or hot forging composite.

8. The composite forming method based on pre-deformation according to claim 6, characterized in that, The surface treatment, the pre-deformation, the preform assembly, the cold deformation composite, the hot deformation composite, or the diffusion heat treatment can be performed online or offline. The surface treatment, pre-deformation, cold deformation composite, hot deformation composite, or diffusion heat treatment may or may not be assisted by ultrasound.

9. A layered metal composite material, characterized in that, The metal layered composite material is prepared using the pre-deformation-based composite forming method according to any one of claims 1 to 8. The metal layered composite material is at least one of the following: metal layered composite plate, metal layered composite pipe, metal layered composite profile, metal layered composite rod, metal layered composite wire, or partially composite metal layered composite product.

10. A vacuum insulated cup made of a heterogeneous metal, characterized in that, The mouth of the vacuum insulated cup is made of the metal layered composite material as described in claim 9.

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