CN111403075A - Plate strip with embedded composite metal structure, stamping part and manufacturing method thereof - Google Patents
Plate strip with embedded composite metal structure, stamping part and manufacturing method thereof Download PDFInfo
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- CN111403075A CN111403075A CN202010329397.4A CN202010329397A CN111403075A CN 111403075 A CN111403075 A CN 111403075A CN 202010329397 A CN202010329397 A CN 202010329397A CN 111403075 A CN111403075 A CN 111403075A
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- 229910052751 metal Inorganic materials 0.000 title claims abstract description 84
- 239000002184 metal Substances 0.000 title claims abstract description 84
- 239000002131 composite material Substances 0.000 title claims abstract description 77
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 10
- 239000000463 material Substances 0.000 claims abstract description 154
- 238000000034 method Methods 0.000 claims abstract description 46
- 238000000280 densification Methods 0.000 claims abstract description 18
- 238000000576 coating method Methods 0.000 claims abstract description 17
- 150000002739 metals Chemical class 0.000 claims abstract description 7
- 239000011248 coating agent Substances 0.000 claims abstract description 6
- 239000000758 substrate Substances 0.000 claims description 33
- 238000001125 extrusion Methods 0.000 claims description 27
- 238000005096 rolling process Methods 0.000 claims description 26
- 238000010438 heat treatment Methods 0.000 claims description 10
- 238000009792 diffusion process Methods 0.000 claims description 9
- 238000005253 cladding Methods 0.000 claims description 7
- 238000000926 separation method Methods 0.000 claims description 7
- 238000010030 laminating Methods 0.000 claims description 2
- 239000000470 constituent Substances 0.000 claims 1
- 238000005520 cutting process Methods 0.000 abstract description 3
- 238000004080 punching Methods 0.000 abstract 1
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 43
- 229910052802 copper Inorganic materials 0.000 description 41
- 239000010949 copper Substances 0.000 description 41
- 229910052782 aluminium Inorganic materials 0.000 description 28
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 28
- 230000000694 effects Effects 0.000 description 9
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- 238000000137 annealing Methods 0.000 description 4
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- 238000002360 preparation method Methods 0.000 description 3
- 238000012545 processing Methods 0.000 description 3
- 239000002994 raw material Substances 0.000 description 3
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 2
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Images
Classifications
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B1/00—Conductors or conductive bodies characterised by the conductive materials; Selection of materials as conductors
- H01B1/02—Conductors or conductive bodies characterised by the conductive materials; Selection of materials as conductors mainly consisting of metals or alloys
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B13/00—Apparatus or processes specially adapted for manufacturing conductors or cables
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B5/00—Non-insulated conductors or conductive bodies characterised by their form
- H01B5/02—Single bars, rods, wires, or strips
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
- H01R13/00—Details of coupling devices of the kinds covered by groups H01R12/70 or H01R24/00 - H01R33/00
- H01R13/02—Contact members
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
- H01R4/00—Electrically-conductive connections between two or more conductive members in direct contact, i.e. touching one another; Means for effecting or maintaining such contact; Electrically-conductive connections having two or more spaced connecting locations for conductors and using contact members penetrating insulation
- H01R4/58—Electrically-conductive connections between two or more conductive members in direct contact, i.e. touching one another; Means for effecting or maintaining such contact; Electrically-conductive connections having two or more spaced connecting locations for conductors and using contact members penetrating insulation characterised by the form or material of the contacting members
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
- H01R43/00—Apparatus or processes specially adapted for manufacturing, assembling, maintaining, or repairing of line connectors or current collectors or for joining electric conductors
- H01R43/16—Apparatus or processes specially adapted for manufacturing, assembling, maintaining, or repairing of line connectors or current collectors or for joining electric conductors for manufacturing contact members, e.g. by punching and by bending
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- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Pressure Welding/Diffusion-Bonding (AREA)
Abstract
The invention discloses a plate strip with an embedded composite metal structure, a stamping part and a manufacturing method thereof, wherein the plate strip comprises a base material and an embedded material, the base material and the embedded material are heterogeneous metals, two outer side surfaces and a lower end surface of the embedded material are embedded in the base material, firm physical metallurgical bonding is formed at a joint interface of the embedded material and the base material, and an anti-falling structure with a wide lower part and a narrow upper part is arranged on the cross section of the embedded material; cutting and punching the plate and strip material to obtain a punched part; coating the base material on the lower end surface and two outer side surfaces of the metal strip to be embedded with the anti-drop structure by adopting a selective local coating process to prepare an embedded composite strip with preliminary combination between the metal strip to be embedded and the base material; and forming a compact and firmly-combined material structure between the combining surfaces of the embedded material and the strip material by adopting a densification process to prepare the compact-combined composite metal structure plate strip material. The invention fundamentally solves the problems of unstable and unreliable peeling strength of the joint surface of the base material of the inlaid composite material and the inlaid material at present.
Description
Technical Field
The invention relates to the technical field of metal materials, in particular to a plate strip with an embedded composite metal structure, a stamping part and a manufacturing method thereof.
Background
At present, in the application fields of batteries, electric appliances, electronics, machinery and the like, some metal parts with an embedded composite structure composed of more than two heterogeneous metals are commonly used, such as a square battery negative electrode cover plate, a household appliance switch seesaw, a button battery welding pin, a connecting terminal of a relay, a lead frame, a micromotor commutator, a brush polymer and the like, wherein copper (or copper alloy) or aluminum (or aluminum alloy) is mostly selected as a base material, and a material harder than the base material (such as copper embedded aluminum base material) is selected as an embedded material to meet the requirements of comprehensive optimization schemes in the aspects of conductivity, welding (connecting) performance, wear resistance, economy and the like. However, for some high reliability application requirements (such as the automobile industry), the metal parts made of the inlaid composite material are often difficult to popularize and use due to the phenomenon that the bonding force (peel strength) between the components is unstable or low. The most important reason for the unstable bonding force is actually the inherent process defects of the currently adopted insert rolling composite process, which is shown in fig. 1: on one hand, in order to ensure the stable technological parameters of the inlaying rolling composite process, lubricating oil is required to be added into a rolling deformation area; on the other hand, the lubricating oil with the characteristic of low viscosity is added, so that the capillary action is easily formed between the contacted side surfaces of the material to be embedded and the base material, and the lubricating oil is easily permeated, at the moment, the firm combination is hardly formed between the material to be embedded and the base material, particularly the contacted side surfaces under the characteristic that the broadening of the rolling process of the roller 8 is very small, and therefore, the embedded composite material obtained by the preparation method has the potential quality problem that the contact resistance is unstable and even the material to be embedded falls off. In addition, the embedded strips required by the prior inlaying rolling composite process are mostly rectangular, and can be obtained by simply and conveniently longitudinally shearing and splitting wide plate strips. The groove shape of the base material groove matched with the embedded material is determined by the feasibility of the groove forming process and the process of embedding, rolling and compounding: on one hand, for the continuous grooving or continuous groove milling process of the metal strip, the rectangular (or inverted trapezoid with wide top and narrow bottom and small difference) groove is beneficial to smoothly discharging metal chips generated by cutting from the groove to the outside of the groove, otherwise, the continuous accumulation of the metal chips clamped in the groove can not continuously carry out the grooving process; on the other hand, only the rectangular (or inverted trapezoidal shape with wide top and narrow bottom) groove profile makes it possible to smoothly press the insert into the groove to make sufficient contact with the substrate. However, the composite contact surface formed by the rectangular (or inverted trapezoid with small upper and lower width difference) cross section of the insert and the substrate is very limited, and in addition, the problem that the contact side surface is difficult to be stably combined determines that the overall combination strength of the insert and the substrate is difficult to be improved, so that the requirement of high reliability application cannot be ensured.
Therefore, there is a need to develop new damascene composite structures and methods for making the same to meet the needs of highly reliable application technologies.
Disclosure of Invention
The invention provides a plate strip and a stamping part with an inlaid composite metal structure and a manufacturing method thereof, aiming at fundamentally solving the problems of unstable and unreliable peeling strength of the joint surface of the base material of the inlaid composite material and the inlaid material at present.
The invention adopts the following technical scheme:
on one hand, the invention provides a mosaic composite metal structure plate strip, which adopts the following scheme:
the utility model provides an inlay combined metal structure board strip, includes substrate and inlays the material, substrate and inlay the material and be heterogeneous metal, inlay two lateral surfaces of material and lower terminal surface inlay in the substrate the inlay material with the laminating interface department of substrate forms firm physics metallurgical bonding, the anti-disengaging structure of narrow on the width has down on the cross section of inlay material.
The upper end face of the embedded material is flush with the upper end face of the base material.
Along the thickness direction of the base material, the anti-falling structure is a structure which is formed by two outer side surfaces of the embedded material and gradually narrows upwards.
The anti-falling structure is distributed in the whole section area or the local area of the whole section of the embedded material.
The cross section of the embedded material is symmetrically arranged.
The thickness direction of the base material is consistent with the thickness direction of the embedded material.
The cross section of the embedding material is in one of an isosceles trapezoid shape, an inverted T shape, an inverted horn shape, an I shape or a structure with meshing tooth shapes on two sides.
The ratio of the minimum width dimension of the upper part to the maximum width dimension of the lower part in the anti-falling structure is 1.1-1.9.
The hardness of the base material is less than that of the embedding material.
The stamping part embedded with the composite metal structure plate is further provided, and the stamping part is manufactured by cutting and stamping the strip embedded with the composite metal structure plate.
Also provided is a method of manufacturing a strip of inlaid composite metal structural panels, the method comprising the steps of:
and 3, adopting a densification process to form a dense and firmly-combined material structure between the primary combination surfaces of the metal of each component of the inlaid composite strip obtained in the step 2, so as to prepare the dense-combined composite metal structure plate strip.
In the step 1, one of extrusion, rolling and drawing or any two or three of the processes is adopted, so that the anti-drop structure formed on the two outer side surfaces of the formed metal strip to be embedded has the ratio of the minimum width dimension of the upper part to the maximum width dimension of the lower part of the anti-drop structure being 1.1-1.9.
The selective local coating process in the step 2 is a tangential continuous extrusion or cast rolling composite process, and the adopted base material has good ductility or fluidity in the local coating process, so that the deformation of the coated metal strip to be embedded is less than 10%.
The densification process in the step 3 is to densify the material structure between the preliminary bonding surfaces of the metal of each component of the inlaid composite strip by adopting a rolling process and/or a diffusion heat treatment process.
The technical scheme of the invention has the following advantages:
A. compared with the rectangular combined section of the composite material with the mosaic structure in the prior art, the complex section of the special-shaped metal strip to be embedded adopted by the invention has obvious convex-concave branch characteristics, so that under the condition that the mosaic structure in the prior art has the same mosaic surface (exposed) width and mosaic total thickness, the contact area between the mosaic material and the base material can be obviously increased by the mosaic composite metal structure prepared by the invention, and the mosaic composite metal structure is one of the root causes for obviously improving the binding force or the anti-stripping strength compared with the prior art; the width of the upper surface and the lower surface of the embedded material with the complex section designed by the invention has obvious difference, and the technical effect that the width of the bottom surface of the contact combination of the embedded material and the base material in the subsequent embedded composite structure obviously exceeds the exposed width of the embedded surface is achieved, and the effect can greatly increase the anti-fracture stripping effect of the embedded material and the base material along the thickness direction of the whole embedded composite plate strip material on the structural design.
B. The invention adopts a selective local coating process to prepare the mosaic composite strip with preliminary combination, the selective local coating process adopts an extrusion or cast-rolling composite mode, wherein the base material has good ductility or fluidity in the local coating process, the coated strip does not deform or deforms less than 10 percent, and the width of the bottom surface of the contact combination of the embedded material and the base material obviously exceeds the width of the exposed embedded material; meanwhile, a densification process is combined, and a rolling and diffusion heat treatment process is selected for reasonable combination, so that the material tissue densification effect between the base material and the panel combination interface is doubled; the invention can radically solve the problems of unstable and unreliable peeling strength of the joint surface of the copper-based or aluminum-based inlaid composite material base material and the inlaid material at present.
Drawings
In order to more clearly illustrate the embodiments of the present invention, the drawings which are needed to be used in the embodiments will be briefly described below, and it is apparent that the drawings in the following description are some embodiments of the present invention, and other drawings can be obtained from the drawings without inventive labor to those skilled in the art.
FIG. 1 is a schematic diagram of a compounding process of inlaid composite metal under lubrication of a current work roll;
FIG. 2 is a schematic cross-sectional view of a strip and its stamping according to embodiment 1 of the present invention;
FIG. 3 is a schematic view of a tape to be embedded obtained in step S1 of example 1 of the present invention;
FIG. 4 is a schematic view of the selective wrapping in the tangential continuous extrusion mode at step S2 in example 1 of the present invention;
FIG. 5 is a schematic cross-cut structure of the finished strip of example 2 of the present invention;
FIG. 6 is a schematic view of the inverted flared insert of the finished strip of the present invention;
FIG. 7 is a schematic view of the construction of an I-shaped insert in the finished strip material provided by the present invention;
FIG. 8 is a schematic view of the structure of the rodent insert in the finished strip provided by the present invention.
Description of reference numerals:
1-a substrate; 2-a panel; 3-embedding a copper bar; 4-an aluminum rod; 5-an inlet die; 6-extrusion wheel; 7-an outlet die; 8-a boot seat; 9-rolling; a-anti-falling structure.
Detailed Description
The technical solutions of the present invention will be described clearly and completely with reference to the accompanying drawings, and it should be understood that the described embodiments are some, but not all embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments of the present invention without making any creative effort, shall fall within the protection scope of the present invention.
As shown in fig. 2, the present invention provides a composite metal-inlaid plate strip, which comprises a substrate 1 and an inlaid material 2, wherein the substrate 1 and the inlaid material 2 are heterogeneous metals, two outer side surfaces and a lower end surface of the inlaid material 2 are inlaid in the substrate 1, a firm physico-metallurgical bonding is formed at a joint interface between the inlaid material 2 and the substrate 1, and an anti-falling structure a with a wide lower part and a narrow upper part is arranged on a cross section of the inlaid material 2. The anti-falling structure a is arranged on the surfaces to be combined of the two sides of the embedded material 2, the embedded material 2 can be combined with the base material 1 more firmly by virtue of the anti-falling structure a, and the width of the bottom surface of the embedded material 2 contacted and combined with the base material 1 obviously exceeds the width of the exposed embedded material 2 in the figure.
In the present invention, preferably, the upper end surface of the panel 2 is flush with the upper end surface of the substrate 1, and is located on the substrate 1, and the upper end surface of the panel 2 is exposed to the air, although the upper end surface of the panel 2 may also be extended out of the substrate 1 or lower than the upper end surface of the substrate 1, which will not be described herein again.
The anti-separation structure a is defined in the present invention, for example, two outer side surfaces in the cross section of the panel 2 form a structure gradually narrowing upwards, and this structure can make the panel 2 difficult to separate from the base material 1. Of course, the cross section of the panel 2 may also be isosceles trapezoid, inverted T-shaped (shown in fig. 5), inverted trumpet-shaped (shown in fig. 6), i-shaped (shown in fig. 7), or rodent (dog-tooth) shaped (shown in fig. 8), and other special-shaped cross section structures may also be adopted, so long as it is ensured that two outer side surfaces in the cross section of the panel 2 include the anti-falling structure a with a wide bottom and a narrow top, or there is a structure with a locally formed wide bottom and a narrow top, the purpose of the present invention can be achieved, and further description is omitted for other special-shaped structures. In the cross section of the anti-slip structure a, the ratio of the minimum width dimension of the upper part to the maximum width dimension of the lower part is preferably 1.1 to 1.9. Of course, for some cross-sectional configurations of the panel 2, the width of the upper end surface and the width of the lower end surface of the panel 2 may be made equal, such as an i-shaped configuration as shown in fig. 7, or a rodent configuration as shown in fig. 8, where the width of the upper end surface and the width of the lower end surface of the cross-section of the panel 2 are consistent.
Further preferably, the panel 2 is located at a widthwise middle position of the base material 1. The thickness direction of the base material 1 is preferably made to coincide with the thickness direction of the panel 2.
The invention also provides a preparation method of the mosaic structure composite metal, which mainly comprises the following steps:
s1, preparing a metal strip to be embedded with a special-shaped section, and enabling two outer side surfaces of the metal strip to be embedded to be provided with anti-falling structures a with wide lower parts and narrow upper parts;
s2, coating the base material 1 on the lower end surface and two outer side surfaces of the metal strip to be embedded at a certain temperature by adopting a selective local coating process to prepare an embedded composite strip with preliminary combination between the metal strip to be embedded and the base material;
s3, adopting densification process to form dense and firm combined material structure between the preliminary combined surfaces of each group of metal of the mosaic composite strip obtained in the step S2, and obtaining the dense and combined composite metal structure plate strip.
In the above manufacturing steps, in step S1, the profiled metal strip to be embedded with a complex cross section is prepared by one of extrusion, rolling and drawing, or a combination of any two or a combination of three of the extrusion, rolling and drawing, two outer side surfaces of the profiled metal strip to be embedded may be integrally used as the anti-separation structure a, or, of course, the two outer side surfaces of the profiled metal strip to be embedded may be partially made into the anti-separation structure a, and the widths of the upper and lower surfaces of the profiled metal strip to be embedded in fig. 3 are obviously different. In order to obtain the requirement of accurate dimension control of complicated and special-shaped sections of metal strips to be embedded, which meets the embedding composite process, reasonable process combination, section mould design and processing pass arrangement requirement design are very necessary. Compared with the rectangular combined section of the composite material with the mosaic structure in the prior art, the complex section of the special-shaped metal strip to be embedded adopted by the invention has obvious convex-concave branch characteristics, so that under the condition that the mosaic structure in the prior art has the same mosaic surface (exposed) width and mosaic total thickness, the contact area between the mosaic material 2 and the base material 1 can be obviously increased by the mosaic composite metal structure prepared by the invention, and the mosaic composite metal structure is one of the basic reasons that the bonding force or the anti-stripping strength can be obviously improved by the invention compared with the prior art; in addition, the width of the upper surface and the width of the lower surface of the embedded material 2 with a complex section are obviously different, so that the technical effect that the width of the contact and combination bottom surface of the embedded material 2 and the base material 1 obviously exceeds the exposed width of the embedded surface in the subsequent embedded composite structure is achieved, and the effect can greatly increase the fracture and stripping resistant effect of the embedded material 2 and the base material 1 along the thickness direction of the whole embedded composite plate strip in the structural design.
In the step S2, a selective local cladding process is adopted to prepare an inlaid composite strip with preliminary bonding, the selective local cladding process adopts an extrusion or cast-rolling composite mode, wherein the base material has good ductility or fluidity in the process of local cladding at a certain temperature, the coated strip does not deform or deforms less than 10%, and the width of the bottom surface of the embedded material 2 in contact bonding with the base material 1 obviously exceeds the width of the exposed embedded material 2.
By adopting the extrusion local coating process, the base material 1 is required to have good high-temperature deformability, so the extrusion temperature is selected within the deformation temperature range with the deformation resistance remarkably reduced according to the high-temperature deformation characteristic of the base material 1, and the phenomenon that intermetallic compounds are formed between the embedded material 2 and the base material 1 due to high-temperature contact reaction diffusion in the extrusion process is avoided.
By using the local coating process in casting and rolling, the substrate 1 is flowing coated with the solid insert 2 in a liquid state in the casting and rolling deformation region, so that the substrate 1 should be lower than the melting point of the insert 2, and the formation of harmful intermetallic compounds between the insert 2 and the substrate 1 at this temperature is also prevented. The panel 2 remains undeformed or deformed by less than 10% during the selective partial cladding process for accurate control of the dimensions of the inlay, particularly the apparent width of the exposed portion, in the substrate 1.
In the step S3, a densification process is adopted to form a dense and firmly bonded material structure between primary bonding surfaces of each component of metal of the mosaic composite material obtained in the step S2, and at this time, each contact surface of the mosaic material 2 and the base material 1 reaches the physical metallurgical bonding degree, so that the bonding force or the peel strength is remarkably improved compared with that before densification. The densification process adopted in the invention is at least one of rolling and diffusion heat treatment. Generally, step S2 pertains to the hot deformation process, and thus the overall dimensional accuracy of the resulting plate strip material is to be improved. Step S3 is essentially densification while obtaining a strip of inlaid composite metal sheet that meets the finished dimensions (including inlaid positioning). The principle of densification by selecting at least one of rolling and diffusion heat treatment is as follows: the contact area between the new heterogeneous metals is rapidly increased by the component metals which are contacted with each other and are primarily combined through the rolling plastic deformation process, the diffusion heat treatment not only increases the combination strength because the heterogeneous metal interfaces in two-phase contact mutually diffuse through atoms, but also can enable the pores or microcracks in the primary combination interface between the heterogeneous metals which possibly exist originally to be healed through sintering diffusion, and the densification effect of the material structure between the combination interfaces can be doubled by reasonably combining the rolling heat treatment and the diffusion heat treatment.
On the basis of the steps, the stamping part can be obtained through subsequent processing and stamping, namely, the base material 1 of the stamping part is provided with the heterogeneous metal insert 2 with the complicated special-shaped section, other surfaces of the heterogeneous metal insert 2 except the exposed embedding surface form firm physical metallurgical bonding with the base material 1, and the width of the bottom surface of the insert 2 in contact combination with the base material 1 obviously exceeds the width of the exposed insert.
In the invention, for convenience of manufacture, the hardness of the selected material of the embedded material 2 is greater than that of the material of the base material 1, namely the base material 1 and the embedded material 2 are generally in a matching relationship of a soft material and a hard material, namely the embedded material 2 is hard, the base material 1 is soft, and the base material 1 is ensured to have good ductility or fluidity (note: when the melting point is exceeded) at a certain temperature (note: generally within the hot processing temperature range of the material) so as to tightly coat the embedded material 2. Thus, in addition to the combination of the insert 2 being copper and the substrate 1 being aluminum, there are many other similar combinations that simply require the hard insert 2 to mate with the soft substrate 1. Such as: if the substrate 1 is copper, the material of the insert 2 that is harder than copper may include stainless steel, nickel, etc. The metal selected by the continuous extrusion method is soft materials such as copper, aluminum, silver, lead, tin, magnesium and the like which are suitable for the base material 1, and the corresponding embedded material 2 only needs to be found out to be harder than the base material 1.
Example 1
Referring to the schematic cross-sectional view of the stamping part shown in fig. 2, the negative cover plate for the power square battery is formed by stamping on the basis of a composite metal structure plate strip, wherein the strip is aluminum (brand A1060) embedded with pure copper (C1100), the total width of the composite metal structure plate strip is 50mm, the total thickness of the composite metal structure plate strip is 3.0mm, aluminum is 1-position aluminum on an aluminum substrate, and the H18 state is achieved, and the insert 2 is pure copper and is Y2 (semi-hard state). Wherein, the cross section of the pure copper embedded material 2 which is embedded in the centering symmetry is approximately isosceles trapezoid, the width of the exposed pure copper embedded material 2 is 10mm, the bottom surface of the pure copper embedded material 2 (lower) combined with the corresponding aluminum substrate 1 is 16mm, and the thickness (namely the height of the cross section is trapezoid) of the pure copper embedded material 2 is 1.0 mm. The preparation steps of the composite strip material are as follows:
s1, preparing the to-be-embedded copper material shown in the figure 2 by adopting a continuous extrusion and drawing mode, wherein the used equipment is a L J250 type single-wheel single-groove continuous extrusion machine (which is the prior art), the raw material is a pure copper (C1100) rod with the phi of 11mm, the temperature of a mold cavity for continuous extrusion is about 500-550 ℃, the extrusion speed is 5m/min, an extrusion outlet is a pure copper strip with the cross section of an isosceles trapezoid (the width of the upper end surface of the trapezoid is 10.2mm, the width of the lower end surface of the trapezoid is 16.3mm, and the thickness of the trapezoid is 2.7mm), the pure copper strip is cooled and straightened and coiled by water seal of the outlet, and the coiled pure copper strip immediately enters a 10-ton linear drawing machine, and is subjected to precise-size cladding drawing by a drawing die to obtain the to-be-embedded copper material for the next procedure, and the cross section of the isosceles trapezoid has the specific size of 10.1mm of the upper (surface) width, the lower (bottom) width of 16.1mm, and the total height (namely, the thickness).
S2, using a tangential continuous extrusion machine as shown in FIG. 4 to selectively coat the copper bar 3 to be embedded obtained in the step S1, the used coating extrusion equipment is a L J400 type continuous extrusion machine, wherein the coated raw material adopts a pure aluminum 1060 rod 4 with the diameter of phi 9.5mm, the copper bar 3 to be embedded (the section of the copper bar is narrow at the top and wide at the bottom) transversely penetrates into the mouth mold 5, the aluminum rod 4 blank enters into the mold cavity (the space formed by the inlet mold 5, the outlet mold 7, the shoe base 8 and the like) under the action of the extrusion wheel 6, the metal aluminum and the copper bar 3 to be embedded form selective coating compounding in the mold cavity during the extrusion flow process (the upper surface of the copper bar to be embedded is positioned at the same height with the top surface of the mold), the deformation zone of the mold cavity reaches the highest temperature of 450 ℃, the aluminum ductility is very good, and the embedded copper bar is subjected to slight plastic deformation except for two waists (side surfaces) under the condition of the aluminum and the deformation and the pressure, other dimensions are not changed, and then flows out through the mold to form a preliminary combined copper bar with the total thickness of 51mm and the total isosceles trapezoid thickness of the copper bar 3.
S3, carrying out a densification process combining rolling and pre-finished product annealing on the aluminum-based copper-inlaid composite strip obtained in the step S2, namely, carrying out cold rolling on the strip with the thickness of 6.5mm to 4.0mm through 4 passes, then carrying out annealing heat treatment (the process of setting the temperature of a uniform temperature zone to be 500 ℃ and the annealing speed to be 2 m/min), and carrying out repeated bending inspection after the heat treatment to judge that each adjacent contact surface between the embedded copper material and the base material aluminum has reached the degree of densification integration.
Subsequently, the composite material is rolled to the thickness of 3.0mm of the finished product through 2 times, and the hardness state of the strip completely meets the requirement of a user. And then, precisely slitting and splitting the strips after deoiling and cleaning the strips so as to meet the precision requirements of the user on the overall width of the strips and the copper positioning width by stamping. And finally, stamping to obtain the stamping part required by the user.
The peel strength test of 100 randomly sampled composite finished strips shows that the average bonding force between copper and aluminum is over 800N/mm, the tearing occurs at the aluminum base material part, and the distance from the copper-aluminum bonding surface is 10-12 mm. The result shows that the composite metal strip with the mosaic structure and the stamping part thereof prepared by the invention completely meet the requirements of the automobile application field on high-reliability power battery accessories.
Example 2
A heat sink sheet for 5G obtained by stamping on the basis of an inlaid composite structural sheet strip shown in fig. 5, which requires: the substrate aluminum (designation A1060) is in the form of an airfoil T-shape with a wide top and a narrow bottom, and the cross-section of pure copper (C1100) embedded in the aluminum substrate is in the form of an inverted "T" shape with a narrow top and a wide bottom (i.e., the width of the bottom surface where the copper and aluminum are combined is wider than the exposed copper). The wingspan (total width) of the integral composite special-shaped plate is 60mm (lower bottom aluminum width is 30mm), the thickest part of the plate reaches 5.0mm (the width of the area is about 30mm and is positioned at the symmetrical extension part of the central shaft to the two sides), and the thinnest part of the plate is 1mm (the total width of the area is about 20mm and is respectively positioned at the symmetrical positions of the two edges); the cross section of the symmetrically-centered inlaid pure copper material is approximately inverted 'T' -shaped, wherein the width of the exposed copper insert material is 15mm, the width of the lower bottom surface of the copper and aluminum in contact is 20mm, the thickest part (namely the height of the cross section) of the copper insert material is 2.5mm, and the thickness of two edge wings is about 1.2 mm. The aluminum in the composite sheet reached the H18 temper and the copper was Y2 (semi-hard).
The manufacturing steps S1 and S2 of the composite sheet material were substantially the same as in example 1, and there were differences and adjustments only in the specific raw material (copper bar and aluminum bar) dimensions, extrusion and drawing die design. Because the final finished product is a profiled bar, the extrusion ratio of S2 is increased (up to 5.2, the deformation of the embedded bar reaches 10%) in the step, the extrusion temperature is increased (the highest temperature of a deformation zone of a die cavity reaches 520 ℃), the bonding strength between copper and aluminum obtained in the step S2 obtains the best effect, the difficulty of the densification process in the step S3 can be greatly reduced, the thickness size and the hardness state requirement of the finished plate can be obtained by further performing a small amount of single-pass rolling (the deformation rate is only 10%) in the densification process in the step S3, then stress relief annealing is performed (the residual stress formed in the previous step is eliminated), and finally stamping is performed.
It should be understood that the above examples are only for clarity of illustration and are not intended to limit the embodiments. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. And are neither required nor exhaustive of all embodiments. And obvious variations or modifications therefrom are intended to be within the scope of the invention.
Claims (14)
1. The utility model provides an inlay composite metal structure plate strip, includes substrate (1) and inlays material (2), substrate (1) and inlay material (2) are heterogeneous metal, inlay material two lateral surfaces and lower terminal surface inlay in the substrate inlay material (2) with the laminating interface department of substrate (1) forms firm physics metallurgical bonding, its characterized in that, narrow anti-disengaging structure in wide down has on the cross section of inlay material.
2. A strip of inlaid composite metal structure according to claim 1, characterized in that the upper end face of said panel (2) is flush with the upper end face of said substrate.
3. The strip of inlaid composite metal structure according to claim 2, wherein said anti-separation structure (a) is a structure that is formed by two outer side surfaces of said panel (2) and gradually narrows upwards along the thickness direction of said base material (1).
4. A strip according to claim 3, characterised in that said anti-detachment structure is distributed over the entire section area of the panel (2) or over a partial area of the entire section.
5. An inlaid composite metal structure plate strip according to any one of claims 1-4, wherein said panel (2) is symmetrically arranged in cross-section.
6. A strip according to claim 5, characterised in that the thickness direction of the substrate (1) is coincident with the thickness direction of the panel (2).
7. The inlaid composite metal structure plate strip according to claim 6, wherein said cross-section of said panel is one of isosceles trapezoid, inverted T-shape, inverted trumpet shape, I-shape or a tooth profile on both sides.
8. The strip of inlaid composite metal structural panels according to claim 1, wherein said anti-separation structure (a) has a ratio of upper minimum width dimension to lower maximum width dimension of 1.1-1.9.
9. An inlaid composite metal structure plate strip according to claim 1, wherein said base material (1) is of a lower hardness than said panel material (2).
10. A stamping part inlaid with a composite metal structure plate, which is characterized in that the inlaid composite metal structure plate strip material in the claim 1 is cut and processed by stamping to obtain the stamping part.
11. A method of manufacturing a strip of inlaid composite metal structural panels, said method comprising the steps of:
step 1, preparing a metal strip to be embedded with a special-shaped section, so that two outer side surfaces of the metal strip to be embedded are provided with anti-falling structures with wide lower parts and narrow upper parts;
step 2, coating the base material on the lower end surface and two outer side surfaces of the metal strip to be embedded at a certain temperature by adopting a selective local coating process to prepare an embedded composite strip with preliminary combination between the metal strip to be embedded and the base material;
and 3, adopting a densification process to form a dense and firmly-combined material structure between the primary combination surfaces of the metal of each component of the inlaid composite strip obtained in the step 2, so as to prepare the dense-combined composite metal structure plate strip.
12. The method as claimed in claim 11, wherein in step 1, one or a combination of two or three of the extrusion, rolling and drawing processes is used to form the anti-separation structure on the two outer sides of the metal strip to be embedded, wherein the ratio of the minimum width dimension of the upper part to the maximum width dimension of the lower part of the anti-separation structure is 1.1-1.9.
13. The method as claimed in claim 11, wherein the selective local cladding process in step 2 is a tangential continuous extrusion or cast-rolling composite process, and the adopted base material has good ductility or fluidity during the local cladding process, so that the deformation of the clad metal strip to be embedded is less than 10%.
14. The method of claim 11 wherein the densification of step 3 is by a rolling process and/or a diffusion heat treatment process to densify the material structure between the primary bonding surfaces of the constituent metals of the inlaid composite strip.
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112490820A (en) * | 2020-10-20 | 2021-03-12 | 常州市史美尔精密机械科技有限公司 | Machine tool machining process of connector metal piece |
| CN112659562A (en) * | 2020-12-23 | 2021-04-16 | 上海交通大学 | Method for flexibly connecting polymer plate and foam metal dissimilar material through thermal radiation |
| CN114512359A (en) * | 2022-01-05 | 2022-05-17 | 浙江福达合金材料科技有限公司 | Silver metal oxide inlaid composite strip and preparation method thereof |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4224978A (en) * | 1978-06-19 | 1980-09-30 | Manufacture Metallurgique De Tournus | Method of manufacturing composite strips by continuous casting |
| US5876832A (en) * | 1996-05-31 | 1999-03-02 | Pannell; Shawn D. | Precured strips for Z-pin joining of composites |
| JP2005155118A (en) * | 2003-11-25 | 2005-06-16 | Matsushita Electric Works Ltd | Execution structure of embedded faucet |
| CN101053874A (en) * | 2007-05-23 | 2007-10-17 | 福达合金材料股份有限公司 | Method for preparing double side mosaic type hot-rolling composite silver copper strip |
| CN101817941A (en) * | 2010-05-07 | 2010-09-01 | 山东大学 | Composite material inlaying abrasion-resistant alloy in rubber and preparation method thereof |
| CN107984168A (en) * | 2017-11-17 | 2018-05-04 | 中国兵器科学研究院宁波分院 | The preparation method of the wear-resisting bloom of inserts |
| CN208753417U (en) * | 2018-09-19 | 2019-04-16 | 重庆川仪自动化股份有限公司 | Make the composite metal belt of power battery pack connection sheet |
| CN110269736A (en) * | 2015-07-05 | 2019-09-24 | 大庆元子科技开发有限公司 | A kind of nesting forming production process and tool |
| CN211699750U (en) * | 2020-04-23 | 2020-10-16 | 嘉兴巨合泰铜业有限公司 | Inlaid composite metal structure plate strip and stamping part thereof |
-
2020
- 2020-04-23 CN CN202010329397.4A patent/CN111403075A/en active Pending
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4224978A (en) * | 1978-06-19 | 1980-09-30 | Manufacture Metallurgique De Tournus | Method of manufacturing composite strips by continuous casting |
| US5876832A (en) * | 1996-05-31 | 1999-03-02 | Pannell; Shawn D. | Precured strips for Z-pin joining of composites |
| JP2005155118A (en) * | 2003-11-25 | 2005-06-16 | Matsushita Electric Works Ltd | Execution structure of embedded faucet |
| CN101053874A (en) * | 2007-05-23 | 2007-10-17 | 福达合金材料股份有限公司 | Method for preparing double side mosaic type hot-rolling composite silver copper strip |
| CN101817941A (en) * | 2010-05-07 | 2010-09-01 | 山东大学 | Composite material inlaying abrasion-resistant alloy in rubber and preparation method thereof |
| CN110269736A (en) * | 2015-07-05 | 2019-09-24 | 大庆元子科技开发有限公司 | A kind of nesting forming production process and tool |
| CN107984168A (en) * | 2017-11-17 | 2018-05-04 | 中国兵器科学研究院宁波分院 | The preparation method of the wear-resisting bloom of inserts |
| CN208753417U (en) * | 2018-09-19 | 2019-04-16 | 重庆川仪自动化股份有限公司 | Make the composite metal belt of power battery pack connection sheet |
| CN211699750U (en) * | 2020-04-23 | 2020-10-16 | 嘉兴巨合泰铜业有限公司 | Inlaid composite metal structure plate strip and stamping part thereof |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112490820A (en) * | 2020-10-20 | 2021-03-12 | 常州市史美尔精密机械科技有限公司 | Machine tool machining process of connector metal piece |
| CN112490820B (en) * | 2020-10-20 | 2022-05-06 | 常州市史美尔精密机械科技有限公司 | Machine tool machining process of connector metal piece |
| CN112659562A (en) * | 2020-12-23 | 2021-04-16 | 上海交通大学 | Method for flexibly connecting polymer plate and foam metal dissimilar material through thermal radiation |
| CN114512359A (en) * | 2022-01-05 | 2022-05-17 | 浙江福达合金材料科技有限公司 | Silver metal oxide inlaid composite strip and preparation method thereof |
| CN114512359B (en) * | 2022-01-05 | 2023-08-01 | 浙江福达合金材料科技有限公司 | Silver metal oxide inlaid composite strip and preparation method thereof |
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