TWI737802B - Method for roughening metal forming body - Google Patents

Abstract

The present invention provides a method for roughening the surface of a metal molded body that can be used as an intermediate for the production of a composite molded body of a metal molded body, resin, rubber, metal, and the like.

The roughening method of the metal formed body includes the step of using a laser device to ^{irradiate the surface of the metal formed body with laser light at an energy density of 1 MW/cm 2} or more and an irradiation speed of 2000 mm/sec or more; the aforementioned laser light irradiation step When irradiating the surface of the metal molded body that is the object of roughening to form a straight line, a curve, or a combination of a straight line and a curve, the irradiated part and the non-irradiated part of the laser light are irradiated alternately. step.

Description

Method for roughening metal forming body

The present invention relates to a method for roughening a metal molded body that can be used as an intermediate for the production of a composite molded body of a metal molded body and a resin, rubber, metal, or the like.

It is known that when a composite molded body composed of a metal molded body and a resin molded body is manufactured, the surface of the metal molded body is roughened and then integrated. Japanese Patent No. 5774246 describes a method for roughening a metal formed body (claim 1), which uses a continuous wave laser to continuously irradiate the surface of the metal formed body at an irradiation speed of 2000mm/sec or more. The laser light thereby roughens the surface of the aforementioned metal molded body. With regard to the composite molding system, the metal molded body and the resin molded body joined to the resin molded body after the roughening method of the invention in Japanese Patent No. 5774246 is joined with high bonding strength (Japanese Patent No. 5701414 ).

The subject of the present invention is to provide a method for roughening the surface of a metal molded body that can be used as an intermediate for the production of a composite molded body of a metal molded body and a resin, rubber, or metal. .

The present invention provides a method for roughening a metal formed body. The method for roughening a metal formed body involves using a laser device to apply ^{an energy density of 1 MW/cm 2} or more and an irradiation speed of 2000 mm/sec or more to the aforementioned The step of irradiating the surface of the metal molding with laser light; the aforementioned laser light irradiation step is when the surface of the metal molding as the object of roughening is irradiated with the laser light in a manner of forming a straight line, a curve, or a combination of a straight line and a curve, The step of irradiating is performed by alternately generating the irradiated part and the non-irradiated part of the laser light.

According to the roughening method of the metal formed body of the present invention, the surface of the metal formed body can be formed into a complicated porous structure. Therefore, the roughened metal molding system can be used as a composite molded body with a molded body made of resin, rubber, metal, or the like.

1‧‧‧The irradiation part of the laser light

2‧‧‧The non-irradiated part of the laser light

10、50‧‧‧Metal forming body

11‧‧‧Mask material

51‧‧‧Noodles

55‧‧‧Metal plate

56‧‧‧area

60‧‧‧Measuring platform

61‧‧‧Plane

b1‧‧‧The interval of each dotted line

d1, d2‧‧‧The distance between the opposite sides of the metal plate and the plane of the measuring table

L1, L2‧‧‧Length

FIG. 1 is a diagram showing the state of laser light irradiation in one embodiment when the method for roughening a metal molded body of the present invention is implemented.

Figures 2(a) and (b) are diagrams showing the irradiation pattern of laser light when the method for roughening a metal formed body of the present invention is implemented. Fig. 2(a) is the irradiation pattern in the same direction, and Fig. 2 (b) is a bidirectional irradiation mode.

3(a) and (b) are diagrams for explaining the laser light irradiation steps of other embodiments of the present invention.

Fig. 4 is a perspective view of a metal molded body used in an embodiment.

FIG. 5 is an SEM image of the surface when an aluminum (aluminum) molded body is roughened in Example 1. FIG.

Fig. 6(a) is an SEM image of the surface when the aluminum molded body is roughened in Example 4, and Fig. 6(b) is an SEM image of a cross section.

FIG. 7 is an SEM image of the surface when the aluminum molded body was roughened in Example 5. FIG.

Fig. 8(a) is an SEM image of the surface when the aluminum molded body is roughened in Example 8, and Fig. 8(b) is an SEM image of a cross section.

FIG. 9 is an SEM image of the surface when the aluminum molded body was roughened in Example 13. FIG.

Fig. 10(a) is an SEM image of the surface when the aluminum molded body is roughened in Example 16, and Fig. 10(b) is an SEM image of a cross section.

FIG. 11 is an SEM image of the surface of a stainless steel molded body when the stainless steel molded body was roughened in Example 18. FIG.

Fig. 12(a) is an SEM image of the surface when the stainless steel molded body is roughened in Example 20, and Fig. 12(b) is an SEM image of a cross section.

FIG. 13 is a diagram for explaining the laser irradiation methods of Examples 23 to 25 and Comparative Examples 1 to 3.

14(a) to (c) are diagrams for explaining the measurement methods of the amount of deformation of Examples 23 to 25 and Comparative Examples 1 to 3.

FIG. 15 is an SEM image of the surface of the aluminum molded body when the aluminum molded body was roughened in Example 30. FIG.

FIG. 16 is an SEM image of the surface when the aluminum molded body was roughened in Example 31. FIG.

FIG. 17 is an SEM image of the surface when the aluminum molded body was roughened in Example 32. FIG.

FIG. 18 is an SEM image of the surface when the aluminum molded body was roughened in Example 33. FIG.

The roughening method of the metal molded body of the present invention is to irradiate laser light under different laser light irradiation conditions from the inventions in Japanese Patent No. 5774246 and Japanese Patent No. 5701414. This roughens the surface of the metal molded body in the same way as the inventions in Japanese Patent No. 5774246 and Japanese Patent No. 5701414.

The roughening method of the metal formed body of the present invention includes the step of using a laser device to irradiate the surface of the metal formed body with laser light at an energy density of ^{1 MW/cm 2 or more and an irradiation speed of 2000 mm/sec or more.}

The metal of the metal molded body used in the present invention is not particularly limited, and it can be appropriately selected from known metals depending on the application. For example, cermets such as iron, various stainless steels, aluminum, zinc, titanium, copper, brass, chrome-plated steel, magnesium and alloys containing the above metals, tungsten carbide, chromium carbide, etc. The metal selected from cermet) can also be used after surface treatment such as alumite treatment and plating treatment on the above-mentioned metal.

The shape of the metal molded body used in the present invention is not particularly limited, and a metal molded body having a shape corresponding to the application can be used. The thickness of the metal molded body is also not particularly limited, but the roughening method of the metal molded body of the present invention is excellent in that deformation such as warping is less likely to occur even when a molded body with a small thickness is roughened. Therefore, a thin metal molded body with a thickness of 10 mm or less suitable for irradiating laser light is preferably suitable for a metal molded body with a thickness of 5 mm or less, more preferably suitable for a metal molded body with a thickness of 2 mm or less, and still more preferably It is suitable for metal forming bodies below 1mm.

The laser device used in the present invention may be any laser device capable of ^{irradiating the laser with an energy density of 1 MW/cm 2} or more and an irradiation speed of 2000 mm/sec or more.

The energy density during laser light irradiation is calculated from the output of laser light (W) and laser light (spot area (cm ² ): (π．[spot diameter/2] ² ). When laser light is irradiated The energy density is preferably 2MW/cm ² to 1000MW/cm ² , more preferably 10MW/cm ² to 800MW/cm ² , still more preferably 10MW/cm ² to 700MW/cm ^2. When the energy density is too high, The metal is directly sublimated without melting, so no pores with complex structures are formed.

The irradiation speed of the laser light is preferably 2,000 mm/sec to 20,000 mm/sec, more preferably 2,000 mm/sec to 18,000 mm/sec, and still more preferably 3,000 mm/sec to 15,000 mm/sec.

The output of the laser light is preferably 4W to 4000W, more preferably 50W to 2500W, still more preferably 150W to 2000W, and still more preferably 150W to 1500W. The wavelength is preferably 500 nm to 11,000 nm. The beam diameter (spot diameter) is preferably 5 μm to 80 μm, more preferably 5 μm to 40 μm.

The defocus distance is preferably -5mm to +5mm, more preferably -1mm to +1mm, and still more preferably -0.5mm to +0.1mm. Defocus distance system The laser irradiation can be performed with a fixed set value, or laser irradiation can be performed while changing the defocus distance. For example, when performing laser irradiation, the defocus distance can be continuously reduced or periodically enlarged and reduced.

In the present invention, when laser light is irradiated to the metal molded body in a manner that satisfies the aforementioned energy density and irradiation speed, the surface of the metal molded body is partially evaporated while melting, thereby forming holes with a complicated structure. On the other hand, when the aforementioned energy density and irradiation speed are not satisfied, the surface of the metal molded body is directly sublimated to form holes (holes formed by ordinary pulse laser irradiation) or melting (laser welding). It does not form holes with complex structures.

In the method for roughening a metal formed body of the present invention, a straight line, a curve, or a combination of a straight line and a curve is formed on the surface of the metal formed body as the object of the roughening under the premise of satisfying the above-mentioned energy density and irradiation speed. When the laser light is irradiated by the method, the irradiated part and the non-irradiated part of the laser light are irradiated alternately. The laser light is irradiated by drawing a straight line, a curve, or a combination of a straight line and a curve on the surface of the metal molded body. At this time, each of the straight line and the curve is composed of the irradiated part and the non-irradiated part of the laser light alternately and continuously.

The so-called "irradiation in a manner of alternately generating an irradiated portion and a non-irradiated portion of the laser light" includes an embodiment in which the irradiation is performed in the manner shown in FIG. 1. Figure 1 shows that the non-irradiated part 2 of the laser light of the length L2 is alternately generated between the irradiation part 1 of the laser light of the length L1 and the adjacent laser light irradiation part 1 of the length L1, and the whole is formed in a dotted line. The way to carry out the state of irradiation. The aforementioned dashed line also includes chain lines such as chain lines and two-point chain lines.

At this time, it is also possible to irradiate the laser light repeatedly to form a dotted line extending in a straight line as shown in FIG. 1 in appearance. The number of repetitions (the number of irradiations) is, for example, 1 to 20 times. In addition, when performing multiple irradiations, the irradiated part of the laser light can be kept unchanged, and the irradiated part of the laser light can be changed (shifting the irradiated part of the laser light) to make the whole irradiated linearly thick. Faceted.

When the irradiation part of the laser light is kept unchanged, the irradiation is performed in a dotted line shape, and when the irradiation part of the laser light is shifted repeatedly, that is, when the irradiation part of the laser light is shifted and overlapped If the laser light is initially irradiated in the non-irradiated part, even if it is originally irradiated in a dotted line, it will eventually be irradiated in a solid line state, which is a preferred implementation mode. In addition, in the following, the irradiated part/non-irradiated part in a broken line shape and the irradiated part in a solid line shape may be referred to as a "line".

When the laser light is continuously irradiated to the metal molded body, the temperature of the irradiated surface rises. Therefore, deformation such as warpage may occur in a molding system with a small thickness. Therefore, measures such as cooling may be necessary. However, when the laser is irradiated in a dotted shape as shown in Figure 1, the irradiated part 1 of the laser light and the non-irradiated part 2 of the laser light are alternately generated, and the non-irradiated part 2 of the laser light is cooled, so it should be continued. When the laser light is irradiated, even a molded body with a small thickness is unlikely to be deformed such as warping, so it is a preferred embodiment. At this time, the same effect can be obtained even if the irradiation part of the laser light is changed (the irradiation part of the laser light is shifted) as described above.

In addition, when the laser light is continuously irradiated to the metal molded body, the temperature of the irradiated surface rises, and the fine metal particles in the molten state are splashed and adhered to the metal molded body and its surrounding components in the form of spatter. When laser irradiation is performed in a dotted shape as shown in FIG. 1, the amount of sputtering material can be reduced compared to when laser light is continuously irradiated, which is a preferred embodiment.

Regarding the laser light irradiation method, a method of irradiating the surface of the metal molded body 10 in one direction as shown in FIG. 2(a) to form a plurality of lines, or a dotted line as shown in FIG. A method of directional irradiation to form multiple lines. Thereby, the desired area of the surface of the metal molded body 10 can be roughened. In addition, there may be a method of irradiating the laser light so that the dotted line irradiated part intersects.

The interval b1 of each dotted line after irradiation is an interval that can be adjusted according to the area of the irradiated object of the metal molding, for example, it can be in the range of 0.01mm to 5mm, preferably in the range of 0.02mm to 3mm, more preferably The range of 0.03mm to 1mm. That is, with regard to the irradiation, it can be performed in such a way that the required number of lines can be formed in accordance with the area of the region to be roughened. The lines can be formed sequentially adjacent to each other, or in any order, for example, in the first scan of the laser light, one jump is formed (for example, the odd-numbered lines among the lines to be formed), and the remaining lines are formed in the second scan. Under the line (even-numbered line) and other methods.

The length (L1) of the irradiated part 1 of the laser light and the length (L2) of the non-irradiated part 2 of the laser light shown in FIG. It is preferable to adjust in a manner that falls within the range of L1/L2=2/8 to 8/2. When the ratio is large, the efficiency of the roughening step increases, but the cooling effect becomes worse; when the ratio is small, the cooling effect increases, but the efficiency of roughening decreases. The ratio can be determined by considering the balance between cooling and roughening according to the material used and the desired degree of roughening. In order to roughen the surface into a complex porous structure, the length (L1) of the irradiated portion 1 of the laser light is preferably 0.05 mm or more, more preferably 0.1 mm to 10 mm, and still more preferably 0.3 mm to 7 mm.

In a preferred embodiment of the method for roughening a metal molded body of the present invention, the step of irradiating the laser light is to use a direct modulation method that directly converts the driving current of the laser to the laser. The fiber laser device of the power supply, etc., adjust the duty ratio for laser irradiation.

Regarding laser excitation, there are two types: pulse excitation and continuous excitation. Pulse wave lasers generated by pulse excitation are generally called normal pulses.

Even if it is continuous excitation, pulse wave lasers can be generated. Pulse wave lasers can be generated by the following methods: set the pulse width (pulse ON time) to be shorter than the normal pulse but correspondingly have high peak power The Q switch pulse wave oscillation method of laser oscillation uses AOM and LN light intensity modulators to time-cut the light, so that the external modulation method generated by the pulse wave laser is mechanically cut off (chopping) the method of pulsing, the method of operating a galvano mirror to pulse, and the direct modulation method of directly modulating the driving current of the laser to generate a pulse wave laser, etc.

The method of operating the electron microscope to pulse is a method of irradiating the laser light oscillated from the laser oscillator through the dielectric mirror through the combination of the electron microscope and the galvano controller. At this time, the laser light irradiation step uses a combination of electron microscope and electron microscope controller. The electron microscope controller pulses the laser light continuously oscillated from the laser oscillator, thereby adjusting the output according to the laser light. The ratio of ON time to OFF time is calculated by the following formula, and the step of irradiating is performed through the dielectric mirror to alternately generate the irradiated part and the non-irradiated part of the laser light. Specifically, it can be implemented as follows.

The gate signal is periodically ON/OFF output from the electron microscope controller, and the laser light oscillated by the laser oscillator is turned on/off with the ON/OFF signal. This can reduce the energy density of the laser light Pulsed under changes. As a result, as shown in FIG. 1, the laser light irradiated part 1 and the adjacent non-irradiated part of the laser light between the laser light irradiated part 1 are alternately generated, and the whole is formed into a dotted line to irradiate the laser light. . The method of operating the electron microscope to pulse it can adjust the working ratio without changing the oscillation state of the laser light itself, so the operation is simple.

Among the above methods, it is preferable to use a method of mechanically cutting off and pulse, a method of operating an electron microscope to pulse, or a direct modulation method of directly modulating the driving current of the laser to generate a pulse wave laser, because these The method is a method that can easily pulse (irradiate in a way that alternately produces irradiated parts and non-irradiated parts) without changing the energy density of the continuous wave laser. In addition, the direct modulation method uses a direct modulation method that directly converts the driving current of the laser and connects the optical fiber laser device of the laser power supply to continuously excite the laser to generate pulses. The method of wave laser is different from the continuous wave laser used in Japanese Patent No. 5774246 and Japanese Patent No. 5701414 to roughen the surface of the metal formed body.

The working ratio is the ratio calculated from the ON time and OFF time of the laser light output by the following formula.

Working ratio (%) = ON time / (ON time + OFF time) × 100

The working ratio corresponds to L1 and L2 (that is, L1/[L1+L2]) shown in Figure 1, and can be selected from the range of 10% to 90%, preferably from 20% to 80% Select from the range. Thereby, it is possible to irradiate the irradiation part and the non-irradiation part of the laser light alternately.

By adjusting the working ratio to irradiate the laser light, it can be irradiated into a dotted line as shown in Figure 1. When the working ratio is large, the efficiency of the roughening step increases, but the cooling effect becomes worse; when the working ratio is small, the cooling effect increases, but the roughening efficiency decreases. It is better to adjust the work ratio according to the purpose.

In another preferred embodiment of the method for roughening a metal molded body of the present invention, the step of irradiating the aforementioned laser light is to arrange the surface of the metal molded body as the object of the roughening at intervals so as not to allow lightning. The laser is continuously irradiated while the light passes through the masking material. The mask material may be in direct contact with the formed metal body or not in contact with the formed metal body. When irradiating each line multiple times, the entire metal molded body can be roughened by changing the position of the masking material.

In this embodiment, as shown in FIG. 3(a), the laser is continuously irradiated in a state where a plurality of mask materials 11 are arranged on a metal molded body 10 at intervals. As for the mask material, a metal with a low thermal conductivity can be used. Then, when the mask material 11 is removed, a dotted line formed by alternately generating the irradiated part and the non-irradiated part of the laser light is formed as in FIG. 1.

In the case of the embodiment shown in FIG. 3, similarly, the part of the mask material 11 is cooled. Therefore, when the laser light is continuously irradiated, the molded body with a small thickness is less likely to be warped or the like. Deformation, so it is a preferred implementation mode.

The length (L1) of the irradiated part 1 of the laser light (L1) and the length (L2) of the non-irradiated part 2 of the laser light can fall within the range of L1/L2=1/9 to 9/1 (that is, L1/[L1 +L2] is the range of 10% to 90%). In order to roughen the surface into a complex porous structure, the length (L1) of the irradiated portion 1 of the laser light is preferably 0.05 mm or more, preferably 0.1 mm to 10 mm, and more preferably 0.3 mm to 7 mm.

The continuous wave laser system can use well-known technology, such as YVO4 laser, fiber laser (single-mode fiber laser, multi-mode fiber laser), excimer laser Laser, carbon dioxide laser, ultraviolet laser, YAG laser, semiconductor laser, glass laser, ruby laser, He-Ne laser, nitrogen laser, chelate laser , Or dye laser.

By implementing the roughening method of the metal molded body of the present invention, a porous structure can be formed on the surface of the metal molded body (including the range from the surface to a depth of about 500 μm). As shown in Figure 7, Figure 8, Figure 24 to Figure 26 and Figure 29 of the National Patent No. 5774246, and Figure 7, Figure 8, Figure 24 to Figure 26, and Figure 29 of the Japanese Patent No. 5701414, the same complex Porous structure.

Example Examples 1 to 16

^{The entire surface (20 mm 2} area) of the surface 51 of the metal molded body 50 (aluminum A5052) of the shape and size shown in FIG. 4 was irradiated with laser light under the conditions shown in Table 1, and the laser light irradiation surface of the surface 51 was coarse Faceted.

The laser device uses the following specifications.

Oscillator: IPG-Yb fiber; YLR-300-SM

Condenser system: fc=80mm/fθ=100mm

Defocus distance: ±0mm (fixed)

Pulse wave conversion device: pulse generator FG110 (synthesized function generator), manufactured by Yokogawa Electric Corporation

Regarding the groove depth, a digital microscope VHX-900 (manufactured by KEYENCE) was used to measure the surface 51 irradiated with laser light. The average groove depth is measured at ten locations and then the average value is made. The maximum groove depth is the value of the deepest part of the ten measured points.

Regarding the tensile strength, it was obtained by the tensile test of the butt joint test specimen conforming to ISO19095 (tensile speed 10mm/min, distance between chuck 50mm). Regarding the butt test specimens, the resin system uses GF30% reinforced PA6 resin (PLASTRON PA6-GF30-01 (L9): Daicel Polymer Co., Ltd.), and the injection molding machine uses FANUC ROBOSHOT S2000i100B). The resin temperature is 280°C, and the mold It is produced by injection molding at a temperature of 100°C.

In an embodiment where the number of repetitions is plural times (5 times or more), the irradiation part of the laser light is shifted so that each irradiation line becomes a solid line (in a way that there is no non-irradiation part). The same is true in the following embodiments.

As shown in FIGS. 5 to 10, SEM images of the surface of the metal formed bodies of Examples 1, 4, 5, 8, 13, and 16, as well as Example 4 (FIG. 6), Example 8 (FIG. 8) And the cross-sectional image of the metal forming body of Example 16 (FIG. 10) can be confirmed that it is roughed and formed in accordance with FIGS. 7, 8, and 24 to 26 and 29 of Japanese Patent No. 5774246, and Japan Figure 7, Figure 8, Figure 24 to Figure 26 and Figure 29 of the National Patent No. 5701414 have the same complex porous structure. As can be confirmed from the numerical value of tensile strength, it can be seen that Examples 1, 4, 5, 8, 13, and 16, and other examples without SEM images are similarly roughened.

In addition, when a normal pulse wave laser is used, it is irradiated in the same manner as Comparative Examples 1, 4, and 7 of Japanese Patent No. 5774246 and Comparative Examples 1, 4, and 7 of Japanese Patent No. 5701414 In the case of pulse wave laser light, when the spot diameter, pulse width, and laser light irradiation speed are considered, the adjacent light spots all overlap each other, so there will be no irradiated part and non-irradiated part of the laser light alternately generated.

Examples 17 to 22

^{As in Examples 1 to 16, the entire surface (20 mm 2} area) of the surface 51 of the metal molded body 50 (stainless steel SUS304) of the shape and size shown in FIG. 4 was irradiated with laser light under the conditions shown in Table 2, and the surface The laser light irradiation surface of 51 is roughened. In addition, the maximum groove depth and tensile strength were measured in the same manner as in Examples 1 to 16.

As can be confirmed from the SEM image showing the surface of the metal forming body of Example 18 shown in FIG. 11 and the SEM image showing the surface and cross section of the metal forming body of Example 20 shown in FIG. 12, they are all rough surfaces. Chemicals is the same as Figure 7, Figure 8, Figure 24 to Figure 26, and Figure 29 of Japanese Patent No. 5774246, and Figure 7, Figure 8, Figure 24 to Figure 26, and Figure 29 of Japanese Patent No. 5701414 Porous structure. As can be confirmed from the numerical value of the tensile strength, it can be seen that Examples 18 and 20 and other examples without SEM images are similarly roughened.

In addition, when a normal pulse wave laser is used, the results are the same as Comparative Examples 1, 4, and 7 of Japanese Patent No. 5774246, and Comparative Examples 1, 4, and 7 of Japanese Patent No. 5701414. Therefore, It will not be the same as the above-mentioned embodiment.

Examples 23, 24, Comparative Examples 1, 2

The metal plate 55 (30mm×30mm) of the shape shown in Fig. 13 was used and the thickness (Table 3) was changed. For the area 56 of 20mm×6mm, the conditions shown in Table 3 were used in Fig. 2(b) The irradiation mode shown is the same as that of Examples 1-16 to irradiate laser light.

The deformation amount of the metal plate 55 after being irradiated by the laser light is measured. Figure 14 (a) to (c) illustrate the measurement method. Fig. 14(a) and (b) are diagrams showing the state before and after the laser light is irradiated, and Fig. 14(b) is an exaggerated representation of the deformation to make it easier to understand.

The amount of deformation is obtained by placing the metal plate 55 irradiated with laser light on a measuring table 60 with a flat surface 61, and measuring it with a scale loupe (3010S: manufactured by Ikeda Lens Industry Co., Ltd.) It is obtained by measuring the distances d1 and d2 between the surfaces facing both sides and the flat surface 61 of the measuring table 60. Table 3 shows that the number of measurements is 5, and the average value obtained from (5×d1+5×d2)/10.

As can be seen from Table 3, although Comparative Examples 1 and 2 in which laser light was continuously irradiated were only slightly deformed, Examples 23 and 24 showed no deformation (warping). From this result, it was confirmed that the roughening method of the present invention has an effect on a metal molded body with a small thickness. In addition, as a result of visual confirmation, compared with Comparative Examples 1 and 2, the amount of sputtering in Examples 23 and 24 was smaller.

Example 25, Comparative Example 3

Example 25 was irradiated with laser light under the conditions shown in Table 4 as in Examples 23 and 24; Comparative Example 3 was irradiated with laser light under the conditions shown in Table 4 as in Comparative Examples 1 and 2. The deformation was measured in the same manner as in Examples 23 and 24.

As can be seen from Table 4, although Comparative Example 3 in which the laser light is continuously irradiated is only slightly deformed, Example 25 is not deformed (warped). From this result, it was confirmed that the roughening method of the present invention has an effect on a metal molded body with a small thickness. In addition, as a result of visual confirmation, the amount of sputtering material in Example 25 was smaller than that in Comparative Example 3.

Examples 26 to 33

^{The entire surface (20 mm 2} area) of the surface 51 of the metal molded body 50 (aluminum A5052) of the shape and size shown in FIG. 4 was irradiated with laser light under the conditions shown in Table 5, and the laser light irradiation surface of the surface 51 was coarse Faceted. Among them, the laser light system irradiates continuously while adjusting the duty ratio by operating the electron microscope to pulse. 15 to 18 show SEM images of the surface of the aluminum formed body after the laser light of Examples 30 to 33 are irradiated. The measurements were carried out in the same way as in Examples 1-16.

The laser device uses the following specifications.

Oscillator: IPG-Yb fiber; YLR-300-SM (manufactured by IPG)

Condenser system: fc=80mm/fθ=100mm

Defocus distance: ±0mm (fixed)

Galvano scan head: Squirrel 16 (manufactured by ARGES)

Electron microscope controller: ASC-1

Collimator for Squirrel 16 (f80mm): OPTICEL D30L-CL

As can be confirmed from Table 5 and Figs. 15 to 18, the method of pulsed using an operating electron microscope is also the same as in other embodiments to adjust the work ratio and roughen the surface.

In addition, for example, the "ON time" of Example 26 is "100μsec", which means that at a frequency of 5000 Hz (5,000 vibrations per second, one vibration (for example, the interval between a peak and adjacent peaks) is 200μsec), 100μsec The laser light is irradiated, and the laser light is not irradiated for the remaining 100μsec. At this time, the working ratio is 100/200=50.

Industrial availability

The roughened metal forming system obtained by the roughening method of the metal forming body of the present invention can be used in addition to the production intermediate of the composite forming body described in the invention of Japanese Patent No. 5701414 The abrasive material described in JP 2016-36884 A, the fine particle carrier described in JP 2016-7589, and the use described in paragraph number [0037] of JP 2016-43413.

Claims (8)

A method for roughening a metal formed body, which has the step of using a laser device to irradiate the surface of the aforementioned metal formed body with continuously excited laser light at an energy density of ^{10 to 1000 MW/cm 2 and an irradiation speed of 2000 mm/sec or more;} The aforementioned laser light irradiation step is to irradiate the continuously excited laser light in the form of a straight line, a curve, or a combination of a straight line and a curve on the surface of the metal molded body that is the object of roughening. An optical fiber laser device formed by a direct-modulation modulating device that directly converts the current is connected to a laser power source. It adjusts the working ratio obtained by the following formula based on the ON time and OFF time of the laser light output to alternately generate lightning The step of irradiating the irradiated part and the non-irradiated part of the light, the working ratio (%)=ON time/(ON time+OFF time)×100. A method for roughening a metal formed body, which has the step of using a laser device to irradiate the surface of the aforementioned metal formed body with continuously excited laser light at an energy density of ^{10 to 1000 MW/cm 2 and an irradiation speed of 2000 mm/sec or more;} The aforementioned laser light irradiation step is to use the electron microscope and the electron microscope controller to irradiate the continuously excited laser light in a manner of forming a straight line, a curve, or a combination of a straight line and a curve on the surface of the metal molded body that is the object of roughening. In combination, the electron microscope controller pulses the laser light continuously oscillated from the laser oscillator, thereby adjusting the duty ratio obtained by the following formula based on the ON time and OFF time of the laser light output. The electron microscope performs the irradiation step by alternately generating the irradiated part and the non-irradiated part of the laser light, and the working ratio (%)=ON time/(ON time+OFF time)×100. A method for roughening a metal formed body, which has a step of using a laser device to irradiate the surface of the aforementioned metal formed body with continuously excited laser light at an energy density of ^{10 to 1000 MW/cm 2 and an irradiation speed of 2000 mm/sec or more;} The aforementioned laser light irradiation step is to irradiate the continuously excited laser light in the form of a straight line, a curve, or a combination of a straight line and a curve on the surface of the metal molded body that is the object of roughening, and the adjustment is performed by mechanically cutting off ( chopping) The method of pulsing The working ratio obtained by the following formula, the step of irradiating the irradiated part and the non-irradiated part alternately to generate the laser light, the working ratio (%)=ON time/(ON time+OFF time) ×100. A method for roughening a metal formed body, which has a step of using a laser device to irradiate the surface of the aforementioned metal formed body with continuously excited laser light at an energy density of ^{10 to 1000 MW/cm 2 and an irradiation speed of 2000 mm/sec or more;} The aforementioned laser light irradiation step is to irradiate the surface of the metal molded body that is the object of roughening with continuously excited laser light in a manner that forms a straight line, a curve, or a combination of a straight line and a curve. A step of continuously irradiating the continuously excited laser light in a state where a mask material that does not allow the laser light to pass through is arranged on the surface of the metal molded body at intervals, and then removing the mask material. A method for roughening a metal formed body, which has the step of using a laser device to irradiate the surface of the aforementioned metal formed body with continuously excited laser light at an energy density of ^{10 to 1000 MW/cm 2 and an irradiation speed of 2000 mm/sec or more;} The aforementioned laser light irradiation step is to use the Q-switch pulse wave oscillation method when the laser light is irradiated to the surface of the metal molded body to be roughened to form a straight line, a curve, or a combination of a straight line and a curve, and adjust the basis The working ratio of the ON time and OFF time of the laser light output is calculated by the following formula, the step of irradiating the irradiated part and the non-irradiated part of the laser light alternately, the working ratio (%)=ON time/(ON time+ OFF time)×100. Such as the roughening method of the metal formed body of claim 5, wherein the aforementioned energy density is 10~700MW/cm ² , and the aforementioned irradiation speed is 2000~15000mm/sec. Such as the roughening method of the metal formed body of claim 5, wherein the length of the irradiated part (L1) and the length of the non-irradiated part (L2) of the aforementioned laser light are L1/(L1+L2)=0.1~0.9, L1 The length is 0.1~10mm. The method for roughening a metal molded body according to any one of claims 1 to 7, wherein the metal molded body is a molded body whose thickness of a portion irradiated with laser light is 5 mm or less.

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