TWM520458U - Composite metal - Google Patents

Description

Composite metal

This creation is about a joining technique for composite materials, especially a composite metal.

With the continuous advancement and development of technology, the application of composite materials in various products has become increasingly common, such as the casings and mechanical parts of mobile phones, tablet computers, notebook computers, etc.; fan blades, automobile and motorcycle parts, medical equipment, Appliance shells or spare parts, helmets; steam locomotive exterior parts and internal structural parts, aircraft interior and exterior parts, propellers, general hull structural parts, military steel helmets, bulletproof parts, sanitary equipment, building materials, etc. are numerous. The finished product produced by the product not only has the advantages of light weight, thinness, good appearance and the like, but also can effectively reduce electromagnetic wave leakage.

The conventional composite metal plate comprises a base layer, an active solder layer and an outer skin layer, the base layer comprises a structural strength metal; the active solder layer is on a first side surface of the base layer, and the active solder layer comprises an active solder The outer layer is located on an outer surface of the active solder layer, and the base layer, the active solder layer and the outer layer are sequentially stacked into one body, and then joined by explosion welding to form a composite metal plate.

However, the problem with composite metal sheets is that the use of explosive welding in the combination of layers and layers requires a large amount of energy, is high in risk, and is difficult to achieve mass production, and is prone to defective products in the manufacturing process, which is disadvantageous for reducing manufacturing costs and Improve production yield. The base layer and the outer layer are only bonded by means of solder, and are applied to a field subjected to shear force, which is liable to cause slippage and detachment of the base layer and the outer layer. Furthermore, the application of solder by means of explosive welding is not suitable for some specific metals (such as magnesium or magnesium alloys) and needs to be improved.

One of the aims of the present invention is to provide a composite metal and a manufacturing method thereof, which can improve the bonding fastness of the two metal bodies, and can simplify the process and shorten the production time.

In order to achieve the above object, the present invention provides a composite metal comprising a first metal body and a second metal body, the first metal body having a surface on which a plurality of protrusions are formed, and in each of the protrusions a plurality of grooves are formed between the bodies, the grooves having a width at a position away from the surface and a top width adjacent to the surface, the root width being greater than the top width; the hardness of the second metal body being less than The hardness of the first metal body is pressed against the surface and embedded and bonded to each of the protrusions and the grooves.

The creation also has the following effects, using the respective grooves to form a large and small shape, and the second metal body can form a mechanically occluded riveting structure after invading each groove, and can not only withstand vibration, impact, heat rise and contraction, etc. In this case, it is more able to maintain the strength and integrity of the overall structure. The provision of the guiding structure and the guiding slope in the groove not only facilitates the intrusion of the second metal body into the respective grooves, but also greatly reduces the existence of the gap. This creation not only enables rapid mass production, but also greatly reduces the cost. The finished products are more lightweight, thinner, high-strength, good in appearance and easy to shape and manufacture.

The detailed description and technical content of the present invention are described below with reference to the drawings, but the drawings are only for reference and explanation, and are not intended to limit the creation.

Referring to Figures 1 and 6, the creation provides a composite metal that is produced in the following manner:

First, a plurality of protrusions 13 and a plurality of grooves 14 are formed on one surface 11 of a first metal body 10; the first metal body 10 in this step may be a metal material having a high hardness such as a copper alloy or a stainless steel. The first metal body 10 has a first surface 11 (or simply a surface) and a second surface 12 formed on the back side of the first surface 11. The forming process can be formed by rolling, stamping, laser, in-mold forming, etc. This embodiment is described by a roll processing method. When the first metal body 10 is conveyed by the conveyor belt, the roller is used. The first surface 11 is subjected to a rolling process by forming a convex block and a groove formed on the surface, that is, a plurality of continuous convex bodies 13 and a plurality of concave grooves 14 can be simultaneously formed on the first surface 11 (as shown in the figure). 1)).

The top portion 131 of each of the protrusions 13 may be a trapezoidal shape that protrudes outward and has an upper width smaller than a lower width (as shown in FIG. 1), an inverted V shape, a straight plane, or a semicircular shape that protrudes outward. The top portion 131 may also be a concave arc that is trapped inward (not shown). Moreover, the shape of each convex body 13 can be rectangular (as shown in FIG. 4), cross (as shown in FIG. 9), triangular (as shown in FIG. 10), circular (as shown in FIG. 11), and six. The shape of the edge (as shown in Figure 12). In addition, each of the protrusions 13 may be a non-geometric or irregular shape in addition to various geometric shapes as in the foregoing embodiments.

Each of the grooves 14 may be laterally, longitudinally or obliquely spaced to form a plurality of elongated protrusions 13 (shown in FIG. 8) between the grooves 14; each of the grooves 14 may also be laterally a longitudinal cross arrangement or a two oblique cross arrangement to form a plurality of protrusions 13 between the grooves 14 (as shown in FIGS. 4 and 9 to 12); or each groove 14 may also be wavy to A plurality of undulating projections 13 (shown in Fig. 13) are formed between the respective grooves 14.

Next, each of the protrusions 13 is plastically deformed by a first pressing device 5 such that the root width W1 of the groove 14 is greater than the top width W2 of the groove 14; as shown in FIGS. 1 to 3, In this embodiment, the top portion 131 of each convex body 13 is pressed by a flat bottom pressing device 5, and then the convex portions 13 are plastically deformed, so that the root width W1 of the concave groove 14 is larger than the top width of the concave groove 14. W2.

Then, a second metal body 20 is stacked on the surface 11 of the first metal body 10, the hardness of the second metal body 20 is less than the hardness of the first metal body 10; the second in this step The metal body 20 may be a plate member made of a metal material having a low hardness such as an aluminum alloy, a magnesium alloy, an aluminum-magnesium alloy or a copper alloy, and the hardness of the second metal body 20 is smaller than the hardness of the first metal body 10, and the second metal is The body 20 is correspondingly overlapped on the first surface 11 of the first metal body 10.

Finally, the first metal body 10 and the second metal body 20 are subjected to a crimping process by a second presser 6 so that the second metal body 20 and each of the protrusions 13 and the grooves 14 are mutually Inlay and bond. Referring to FIG. 5 to FIG. 6 , the second presser 6 may be a crimping die or a roller set 60 , wherein the roller set 60 includes an upper roller 61 and is disposed directly below the upper roller 61 . The lower roller 62 of the position, wherein the crimping process can be performed in a cold or hot manner, and the first metal body 10 and the second metal body 20 that have completed the foregoing laminating process are fed into the upper roller 61 and the lower roller The rolling process is performed between 62, and since the hardness of the second metal body 20 is lower than the hardness of the first metal body 10, the second metal body 20 and each convex body are made after the pressure bonding of the respective rollers 61, 62. 13 and each of the grooves 14 form a mechanically engaged rivet structure for intermeshing and bonding.

Referring to FIG. 6 , the composite metal obtained by the above manufacturing method includes a first metal body 10 and a second metal body 20 . The first metal body 10 has a first surface 11 on the first surface 11 . A plurality of protrusions 13 are formed, and a plurality of grooves 14 are formed between the protrusions 13. The groove 14 has a width W1 at a position away from the first surface 11 and a top portion adjacent to the first surface 11 The width W2, the root width W1 is greater than the top width W2; the hardness of the second metal body 20 is smaller than the hardness of the first metal body 10, and the second metal body 20 is crimped onto the first surface 11 and with the convex bodies 13 and the respective grooves 14 Forming a mechanically snapped rivet structure to form a solid bond.

Referring to FIG. 7 , the first metal body 10 of the present embodiment has a triangular guiding structure 15 formed in a cross section at an intermediate portion of each of the grooves 14 , and a guiding inclined surface is formed on each side of the guiding structure 15 . 151, the guiding slope 151 has a guiding second metal body 20 that can easily invade each of the grooves 14 to be embedded and combined, and can effectively reduce the gap of the second metal body 20 due to the plastic flow path being unsmooth during the flow. The problem can further increase the consolidation strength of the second metal body 20 and the first metal body 10.

Referring to FIG. 14 , the first metal body 10 can be a cylindrical shape as in the above embodiment, and a plurality of protrusions 13 are formed on the circumferential surface of the cylinder. Most of the grooves 14 in which the root width W1 of the groove 14 is greater than the top width W2 (see Fig. 3).

In addition, in the composite metal of the present invention, each of the protrusions 13 and the grooves 14 of the first metal body 10 may be provided on the first surface 11 of the first metal body 10 in addition to the one side of the above embodiments. The second surface 12 and the second surface 12 are provided with the aforementioned convex body 13 and the groove 14.

In summary, the composite metal of this creation can achieve the intended purpose of use, and solve the lack of conventional knowledge, and because of its novelty and progress, it fully meets the requirements of the new patent application, and applies for the application according to the patent law. Please check and grant the patent in this case to protect the rights of the creator.

10‧‧‧First metal body

11‧‧‧ first surface

12‧‧‧ second surface

13‧‧‧ convex

131‧‧‧ top

14‧‧‧ Groove

W1‧‧‧ root width

W2‧‧‧ top width

15‧‧‧Guide structure

151‧‧‧ Guided slope

20‧‧‧Second metal body

5‧‧‧First press

6‧‧‧Second press

60‧‧‧Roller set

61‧‧‧Upper roller

62‧‧‧ Lower roller

Figure 1 is a cross-sectional view of the first metal body and the first presser before being uncompressed.

Figure 2 is a cross-sectional view of the first metal body of the present invention and the first press.

Figure 3 is a cross-sectional view of the first metal body of the present invention after being pressed.

Figure 4 is a perspective view of the perspective of Figure 3.

Figure 5 is a schematic view showing the combination of the first metal body and the second metal body of the present invention by a second press.

Figure 6 is a cross-sectional view of the first metal body and the second metal body of the present invention after crimping.

Figure 7 is a cross-sectional view showing a second embodiment of the first metal body of the present invention.

Figure 8 is a perspective view of a third embodiment of the first metal body of the present invention.

Figure 9 is a plan view of a fourth embodiment of the first metal body of the present invention.

Figure 10 is a plan view of a fifth embodiment of the first metal body of the present invention.

Figure 11 is a plan view of a sixth embodiment of the first metal body of the present invention.

Figure 12 is a plan view of a seventh embodiment of the first metal body of the present invention.

Figure 13 is a plan view of an eighth embodiment of the first metal body of the present invention.

Figure 14 is a perspective view of a second embodiment of the present composite metal.

10‧‧‧First metal body

12‧‧‧ second surface

13‧‧‧ convex

14‧‧‧ Groove

20‧‧‧Second metal body

Claims (8)

A composite metal comprising: a first metal body having a surface on which a plurality of protrusions are formed, and a plurality of grooves are formed between each of the protrusions, the groove having a position away from the surface a root width and a position adjacent to the surface having a top width, the root width being greater than the top width; and a second metal body having a hardness less than a hardness of the first metal body, the second metal body being crimped to the surface And engaging and forming the convex body and each of the concave grooves. The composite metal of claim 1, wherein the first metal body is a flat plate or a cylinder. The composite metal of claim 1, wherein each of the grooves is disposed in a laterally and longitudinally intersecting manner or is intersected by a plurality of oblique grooves. The composite metal according to claim 3, wherein the shape of each of the protrusions is a rectangle, a cross, a triangle, a hexagon or a circle. The composite metal according to claim 1, wherein each of the protrusions has an elongated shape and is disposed at a lateral, longitudinal or oblique interval, and each of the grooves is formed between any of the protrusions. The composite metal according to claim 1, wherein each of the protrusions is undulated and spaced apart, and each of the grooves is formed between any two of the protrusions. The composite metal of claim 1, wherein a guiding structure is formed in the groove of the first metal body. The composite metal of claim 7, wherein the guiding structure has a triangular cross section, and a guiding slope is formed on each side of the guiding structure.