KR102359488B1 - A method for roughening a metal molded body - Google Patents

Abstract

A method for roughening the surface of a metal molded body that can be used as an intermediate for manufacturing a composite molded body of a metal molded body and a resin, rubber, metal or the like is provided. As a roughening method of a metal molded body, using a laser device, the surface of the metal molded body has an energy density of 1 MW/cm ² or more, and has a step of irradiating a laser beam at an irradiation speed of 2000 mm/sec or more, When irradiating laser light to the surface of the metal molded object to be roughened, when irradiating laser light so as to form a straight line, a curved line, or a combination of a straight line and a curved line, a step of irradiating the irradiated portion of the laser light and the non-irradiated portion alternately Phosphorus, a method for roughening a metal molded body.

Description

A method for roughening a metal molded body

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

When manufacturing the composite molded body which consists of a metal molded object and a resin molded object, the technique of integrating after roughening the surface of a metal molded object is known. Japanese Patent No. 5774246 discloses a method for roughening a metal molded body, in which the surface of the metal molded body is roughened by continuously irradiating the surface of the metal molded body with a laser beam at an irradiation speed of 2000 mm/sec or more using a continuous wave laser ( Claim 1) is described. After carrying out the roughening method of the invention of Japanese Patent No. 5774246, the composite molded body obtained by joining with the resin molded object is joined with the metal molded object and the resin molded body with high bonding strength (Japanese Patent No. 5701414).

(Summary of the invention)

An object of the present invention is to provide a method for roughening a metal molded body for roughening the surface of a metal molded body that can be used as an intermediate for manufacturing 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 molded body,

With respect to the surface of the metal molded body, using a laser device, the energy density is 1 MW / cm ² or more, and has a step of irradiating a laser beam at an irradiation rate of 2000 mm / sec or more,

When irradiating the laser beam so as to form a straight line, a curved line, or a combination of a straight line and a curved line with respect to the surface of the metal molded object to be roughened in the laser beam irradiation step, the laser beam irradiation part and the non-irradiated part are irradiated so as to alternately occur It provides the roughening method of the metal molded object which is a process to do.

According to the roughening method of the metal molded object of this invention, the surface of a metal molded object can be made into a complicated porous structure. For this reason, the roughened metal molded object can be used for manufacture of a composite molded object with the molded object which consists of resin, rubber, or a metal.

BRIEF DESCRIPTION OF THE DRAWINGS It is a figure which shows the irradiation state of the laser beam of 1 Embodiment at the time of implementing the roughening method of the metal molded object of this invention.
It is a figure which shows the irradiation pattern of the laser beam at the time of implementing the roughening method of the metal molding of this invention, (a) is an irradiation pattern of the same direction, (b) is a bidirectional irradiation pattern.
3(a) and 3(b) are diagrams for explaining a laser beam irradiation step in another embodiment of the present invention.
4 is a perspective view of a metal molded body used in Examples.
5 is a SEM photograph of the surface of the aluminum molded body roughened in Example 1.
Fig. 6 (a) is a SEM photograph of the surface when the aluminum molded body is roughened in Example 4, and (b) is a SEM photograph of a cross section.
7 is a SEM photograph of the surface of the aluminum molded body roughened in Example 5;
Fig. 8 (a) is a SEM photograph of the surface when the aluminum molded body is roughened in Example 8, and (b) is a SEM photograph of a cross section.
Fig. 9 is an SEM photograph of the surface of an aluminum molded body roughened in Example 13;
Fig. 10 (a) is a SEM photograph of the surface when the aluminum molded body is roughened in Example 16, and (b) is a SEM photograph of a cross section.
Fig. 11 is a SEM photograph of the surface of a stainless steel molded body roughened in Example 18;
Fig. 12 (a) is a SEM photograph of the surface when the stainless steel molded body is roughened in Example 20, and (b) is a SEM photograph of a cross section.
It is a figure for demonstrating the laser irradiation method in Examples 23-25 and Comparative Examples 1-3.
14A to 14C are diagrams for explaining the method for measuring the amount of deformation in Examples 23 to 25 and Comparative Examples 1 to 3;
Fig. 15 is an SEM photograph of the surface of an aluminum molded body roughened in Example 30;
Fig. 16 is a SEM photograph of the surface of an aluminum molded body roughened in Example 31;
Fig. 17 is a SEM photograph of the surface of an aluminum molded body roughened in Example 32;
Fig. 18 is a SEM photograph of the surface of an aluminum molded body roughened in Example 33;

(Form for implementing the invention)

The method for roughening a metal molded body of the present invention is disclosed in Japanese Patent No. 5774246 by irradiating a laser beam under laser beam irradiation conditions different from those described in the invention of Japanese Patent Nos. 5774246 and 5701414. and roughening the surface of the metal molded body as in the invention of Japanese Patent No. 5701414.

The method for roughening a metal molded body of the present invention includes a step of irradiating a laser beam with an energy density of 1 MW/cm ² or more and an irradiation rate of 2000 mm/sec or more on the surface of the metal molded body using a laser device. .

The metal of the metal molded object used in the present invention is not particularly limited, and may be appropriately selected from known metals according to the application. For example, those selected from cermets such as iron, various stainless steels, aluminum, zinc, titanium, copper, brass, chromium-plated steel, magnesium and alloys containing them, tungsten carbide, chromium carbide, etc. On the other hand, it is applicable also to the thing which surface-treated, such as an anodizing process and plating process.

The shape in particular of the metal molded object used by this invention is not restrict|limited, The thing of a shape according to a use can be used. Although the thickness of a metal molded object is not specifically limited, either, The roughening method of the metal molded object of this invention is excellent in that deformation|transformation, such as curvature, is hard to generate|occur|produce even when the molded object with small thickness is roughened. For this reason, the thickness of the portion irradiated with laser light is suitable for a thin metal molded body of 10 mm or less, preferably with a thickness of 5 mm or less, more preferably 2 mm or less, still more preferably 1 mm or less. do.

The laser device used in the present invention may have an energy density of 1 MW/cm ² or more, and may be irradiated with a laser at an irradiation speed of 2000 mm/sec or more.

The energy density at the time of laser light irradiation is calculated|required from the laser light output (W) and laser light (spot area (cm ² ) (π·[spot diameter/2] ² ). The energy density at the time of laser light irradiation is 2 to 1000 MW/cm ² is preferable, 10-800 MW/cm ² is more preferable, and 10-700 MW/cm ² is still more preferable.If the energy density is too high, the metal will not melt and sublimate, so pores with a complicated structure are formed. not formed

2,000-20,000 mm/sec is preferable, as for the irradiation speed of a laser beam, 2,000-18,000 mm/sec is more preferable, 3,000-15,000 mm/sec is still more preferable.

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

The out-of-focus distance is preferably -5 to +5 mm, more preferably -1 to +1 mm, still more preferably -0.5 to +0.1 mm. The out-of-focus distance may be irradiated with a laser by making a set value constant, or may be irradiated with a laser while changing the out-of-focus distance. For example, at the time of laser irradiation, an out-of-focus distance may be made small, or you may increase or decrease periodically.

In the present invention, when a laser beam is irradiated to a metal molded body so as to satisfy the above-described energy density and irradiation speed, the surface of the metal molded body is partially evaporated while melting, thereby forming a hole having a complex structure. On the other hand, if the above-described energy density and irradiation rate are not satisfied, the surface of the metal molded body is sublimated to form holes (holes formed by normal pulsed laser irradiation) or melt (laser welding), resulting in complicated No holes in the structure are formed.

In the method for roughening a metal molded body of the present invention, after the above-described energy density and irradiation speed are satisfied, the surface of the metal molded body to be roughened is irradiated with a laser beam so as to form a straight line, a curved line, or a combination of a straight line and a curve. When irradiating, irradiate the laser beam so that the irradiated part and the non-irradiated part occur alternately. A laser beam is irradiated so as to draw a straight line, a curve, or a combination of a straight line and a curve on the surface of the metal molded body, and then each of the straight line or the curved line is composed of an irradiated portion and a non-irradiated portion of the laser beam that are continuous in turn.

The irradiating so that the irradiation part of a laser beam and the non-irradiation part may generate|occur|produce alternately includes embodiment to irradiate, as shown in FIG. 1 is a non-irradiation part 2 of a laser beam of length L2 between an irradiated part 1 of a laser beam of length L1 and an irradiated part 1 of a laser beam of a length L1 adjacent to each other, The irradiated state is shown so that the whole is formed in a dotted line shape. The dotted line also includes a chain line such as a chain line and a chain line.

At this time, as shown in FIG. 1 by repeatedly irradiating a laser beam, it can also be set as the dotted line shape extended on one straight line in appearance. The number of repetitions (number of irradiation) can be, for example, 1 to 20 times. In addition, when irradiating multiple times, you may make the irradiation part of a laser beam the same, and by making the irradiation part of a laser beam different (transfer the irradiation part of a laser beam), you may make it roughen the whole irradiated linearly.

When the laser beam is irradiated with the same portion and irradiated multiple times, it is irradiated in a dotted line shape, but if the laser beam is irradiated, that is, the portion that was initially not irradiated with the laser beam is moved so that the portion irradiated with the laser beam overlaps and irradiating is repeated. , even when irradiated in a dotted line pattern, it is ultimately irradiated in a solid line state, so it is preferable. In addition, these dotted line-shaped irradiation part/non-irradiation part, and solid-line irradiation part may be called "line" below in some cases.

When a metal molded body is continuously irradiated with laser light, the temperature of the irradiated surface rises, and since there is a possibility that deformation such as warpage may occur in a molded body having a small thickness, countermeasures such as cooling may be necessary. However, as shown in Fig. 1, when the laser is irradiated in a dotted line, the laser beam irradiated part 1 and the laser beam non-irradiated part 2 are alternately generated, and the laser beam non-irradiated part 2 is cooled. Therefore, when laser beam irradiation is continued, even if it is a molded object with small thickness, since it becomes difficult to produce distortion, such as curvature, it is preferable. At this time, the same effect is obtained even when the irradiated portion of the laser beam is different (the irradiated portion of the laser is moved) as described above.

In addition, when the laser beam is continuously irradiated to the metal molded body, the temperature of the irradiated surface rises and fine metal particles in a molten state scatter, adhere to the metal molded body and its surrounding members and remain as spatters, but as shown in FIG. When laser irradiation is performed in a dotted line as shown, it is preferable because the amount of spatter can be reduced as compared with the case where laser light is continuously irradiated.

The laser beam irradiation method is a method of forming a plurality of lines by irradiating the surface of the metal molded body 10 in one direction as shown in Fig. 2(a), or a dotted line shown in Fig. 2(b) Similarly, a method of forming a plurality of lines by irradiating in two directions can be used. Thereby, the desired area|region of the surface of the metal molded object 10 can be roughened. In addition, the method of irradiating so that the dotted line irradiation part of a laser beam may cross may be sufficient.

The interval b1 between each dotted line after irradiation can be adjusted depending on the area to be irradiated of the metal molded body, etc., but for example, in the range of 0.01 to 5 mm, preferably in the range of 0.02 to 3 mm, more preferably in the range of 0.03 to 1 mm. range can be That is, irradiation can be performed so that a required number of lines may be formed according to the area of the area|region to be roughened. Lines may be formed adjacent to each other in sequence, and every other line (for example, odd-numbered lines among the lines to be formed) is formed by the first scanning of the laser beam, and the remaining lines (even-numbered lines) are formed by the second scanning. It can also be formed in any order, such as forming.

The length L1 of the irradiated portion 1 of the laser beam and the length L2 of the non-irradiated portion 2 of the laser beam shown in Fig. 1 are in the range of L1/L2 = 1/9 to 9/1, preferably 2 It can be adjusted so that it may be in the range of /8 to 8/2. When this ratio is large, although the efficiency of a roughening process will improve, a cooling effect will become low, and when this ratio is small, a cooling effect will improve, but roughening efficiency will worsen. Depending on the material to be used or the desired degree of roughening, the ratio may be determined in consideration of the balance between cooling and roughening. In order to roughen into a complicated porous structure, as for length L1 of the irradiation part 1 of a laser beam, it is preferable that it is 0.05 mm or more, 0.1-10 mm is more preferable, 0.3-7 mm is still more preferable.

In a preferred embodiment of the method for roughening a metal molded body of the present invention, the above-described laser light irradiation step uses a fiber laser device in which a direct modulation type modulation device that directly converts a laser driving current is connected to a laser power supply, etc. , by adjusting the duty ratio and irradiating the laser.

There are two types of laser excitation, pulse excitation and continuous excitation, and a pulse wave laser by pulse excitation is generally called a normal pulse.

It is possible to produce a pulsed laser even with continuous excitation, and by shortening the pulse width (pulse ON time) than a normal pulse and oscillating a laser with a correspondingly high peak power, the Q switch pulse oscillation method, AOM or LN optical intensity modulator An external modulation method that generates a pulsed laser by temporally cutting light, a method of mechanically chopping and pulsed, a method of pulsed by manipulating a galvanometer, and a method of directly modulating the driving current of the laser to generate a pulsed laser A pulse wave laser can be produced by a direct modulation method or the like.

A method of manipulating the galvanometer mirror to make it pulse is a method of irradiating laser light oscillated from a laser oscillator through the galvanometer mirror by a combination of the galvanometer mirror and the galvano controller. In this case, the laser beam irradiation process uses a combination of a galvanometer mirror and a galvano controller to pulse the laser beam continuously oscillated from the laser oscillator by the galvano controller, from the ON time and OFF time of the output of the laser beam. It is a process of irradiating so that the irradiated portion and the non-irradiated portion of the laser beam are alternately generated through the galvanometer by adjusting the duty ratio obtained by the following equation, and specifically, it can be carried out as follows.

By periodically outputting ON/OFF the gate signal from the galvano controller, and turning ON/OFF the laser beam oscillated by the laser oscillator with the ON/OFF signal, it is possible to pulse without changing the energy density of the laser beam. Thereby, as shown in FIG. 1, the non-irradiated part of the laser beam between the irradiated part 1 of a laser beam and the adjacent irradiated part 1 of a laser beam is alternately generated, and a laser beam is irradiated so that it may form in dotted line shape as a whole. can do. In the method of pulsed by manipulating the galvanometer mirror, the operation is simple because the duty ratio can be adjusted without changing the oscillation state of the laser beam itself.

Among these methods, the pulsed (irradiated portion and non-irradiated portion are irradiated alternately) without changing the energy density of the continuous wave laser is a method that can be easily performed. A method of pulsed by manipulating a mirror or a direct modulation method of directly modulating a driving current of a laser to generate a pulsed wave laser is preferable. In addition, this direct modulation method uses a fiber laser device in which a direct modulation type modulation device that directly converts a laser driving current is connected to a laser power supply, thereby continuously excitation of the laser to produce a pulsed wave laser. Japanese Patent No. 5774246 It is different from the continuous wave laser used for roughening the metal molded body in Japanese Patent Application Laid-Open No. 5701414 and Japanese Patent Publication No. 5701414.

Duty ratio is a ratio calculated|required by the following formula from ON time and OFF time of the output of a laser beam.

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

Since the duty ratio corresponds to L1 and L2 (that is, L1/[L1+L2]) shown in Fig. 1, it can be selected in the range of 10 to 90%, preferably in the range of 20 to 80%. Thereby, it can irradiate so that the irradiation part of a laser beam and a non-irradiation part may arise alternately.

By adjusting the duty ratio and irradiating the laser beam, it can be irradiated in a dotted line shape as shown in FIG. 1 . When the duty ratio is large, the efficiency of the roughening process is improved, but the cooling effect is lowered, and when the duty ratio is small, the cooling effect is improved, but the roughening efficiency is bad. Depending on the purpose, it is preferable to adjust the duty ratio.

In another preferred embodiment of the method for roughening a metal molded body of the present invention, in the above-described laser beam irradiation step, a masking material that does not pass laser light is disposed on the surface of the metal molded body to be roughened at intervals. The laser is continuously irradiated in the state. Even if a masking material contacts a metal molded object directly, it does not need to be in contact. When irradiating multiple times with respect to each line, the whole metal molded object can be roughened by changing the position of a masking material.

In this embodiment, a laser is continuously irradiated in the state which arrange|positioned the some masking material 11 with mutual spacing on the metal molded object 10 like FIG.3(a). As the masking material, a metal having low thermal conductivity or the like can be used. Then, when the masking material 11 is removed, similarly to FIG. 1, the dotted line which the irradiation part of a laser beam and the non-irradiation part generate|occur|produced alternately is formed.

Even in the case of the embodiment shown in Fig. 3, since the part of the masking material 11 is cooled, when laser beam irradiation is continued, even a molded object having a small thickness becomes less likely to be deformed such as curvature, which is preferable.

The length L1 of the irradiated portion 1 of the laser light and the length L2 of the non-irradiated portion 2 of the laser light are in the range of L1/L2 = 1/9 to 9/1 (that is, L1/[L1+L2] It can be adjusted so that it may become this 10 to 90% of range). In order to roughen into a complicated porous structure, it is preferable that it is 0.05 mm or more, 0.1-10 mm is preferable, and, as for length L1 of the irradiation part 1 of a laser beam, 0.3-7 mm is more preferable.

A known continuous wave laser can be used, for example, YVO ₄ laser, fiber laser (single-mode fiber laser, multi-mode fiber laser), excimer laser, carbon dioxide laser, ultraviolet laser, YAG laser, semiconductor laser, glass laser. , a ruby laser, a He-Ne laser, a nitrogen laser, a chelate laser, or a dye laser can be used.

By carrying out the roughening method of a metal molded object of this invention, a porous structure can be formed in the surface (including the range from the surface to the depth of about 500 micrometers) of a metal molding, Specifically, Unexamined-Japanese-Patent No. 5774246. 7, 8, 24 to 26, and 29 of Japanese Patent No. 5701414 can have the same complex porous structure as shown in FIGS. 7, 8, 24 to 26, and 29 have.

(Example)

Example 1 to 16

The entire surface (the area of 20 mm ² ) of the surface 51 of the metal molded body 50 (aluminum A5052) having the shape and dimensions shown in FIG. 4 is irradiated with laser light under the conditions shown in Table 1, and the surface ( 51), the laser beam irradiation surface was roughened.

The following laser devices were used.

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

Condenser: fc=80mm/fθ=100mm

Out of focus distance: ±0mm (constant)

Pulse wave converter: Pulse generator FG110 (synthesized function generator), manufactured by Yokogawa Denki Co., Ltd.

The groove depth was measured on the surface 51 after laser light irradiation with a digital microscope VHX-900 (manufactured by Keyence Corporation). The average groove depth measured ten places and made it the average value. The maximum groove depth was made into the value of the deepest part among 10 places measured.

Tensile strength was obtained by a tensile test on a butt test piece based on ISO 19095 (tensile speed 10 mm/min, distance between chucks 50 mm). For the butt test piece, a GF 30% reinforced PA6 resin (Plastron PA6-GF30-01 (L9): manufactured by Daicel Polymer Co., Ltd.) was used as the resin, and the injection molding machine was Panak ROBOSHOT S2000i100B), and the resin temperature : 280 degreeC, mold temperature: Obtained by injection molding at 100 degreeC.

In the Example in which the number of repetitions was multiple times (five times or more), it irradiated so that the irradiation part of a laser beam was moved and each irradiation line might become a solid line (so that a non-irradiated part may disappear). The same applies to the following examples.

SEM photographs showing the surfaces of the metal molded bodies of Examples 1, 4, 5, 8, 13, and 16 shown in Figs. 5 to 10, Examples 4 ( Fig. 6 ), Example 8 ( Fig. 8 ), and Examples As can be seen from the cross-sectional photograph of the metal molded body of Example 16 (FIG. 10), all of FIGS. 7, 8, 24 to 26, and 29 of Japanese Patent No. 5774246, and FIGS. 7, 8, 24 to 26, and was roughened with a complex porous structure as shown in FIG. As can be seen from the numerical values of the tensile strength, it is clear that the roughening was similarly performed in Examples 1, 4, 5, 8, 13, and 16, and in other Examples without SEM photographs.

In addition, when a normal pulsed wave laser was used, the pulsed laser beam was applied in the same manner as in Comparative Examples 1, 4, and 7 of Japanese Patent No. 5774246 and Comparative Examples 1, 4, and 7 of Japanese Patent No. 5701414. When it is irradiated, when it considers from a spot diameter, a pulse width, and laser beam irradiation speed, since adjacent spots will overlap, since a laser beam irradiated part and a non-irradiated part do not generate|occur|produce alternately.

Example 17-22

In the same manner as in Examples 1 to 16, the entire surface (range of 20 mm ² ) of the surface 51 of the metal molded body 50 (stainless steel SUS 304) having the shape and dimensions shown in FIG. 4 is shown in Table 2 The laser beam was irradiated under the conditions, and the laser beam irradiation surface of the surface 51 was roughened. Further, in the same manner as in Examples 1 to 16, the maximum groove depth and tensile strength were measured.

As can be seen from the SEM photograph showing the surface of the metal molded body of Example 18 shown in FIG. 11 and the SEM picture showing the surface and cross section of the metal molded body of Example 20 shown in FIG. 12, both are Japanese Patent No. 5774246 7, 8, 24 to 26, and 29 of Japanese Patent Publication No. 7, 8, 24 to 26, and 29 of Japanese Patent No. 5701414 are roughened into the same complex porous structure. there was. As can be confirmed from the numerical value of the tensile strength, it is clear that, together with Examples 18 and 20, the roughening was similarly performed in the other Examples without an SEM photograph.

In addition, when a normal pulsed wave laser is used, Comparative Examples 1, 4, and 7 of Japanese Patent No. 5774246 and Comparative Examples 1, 4, and 7 of Japanese Patent No. 5701414 are the same. It will not be the same as the example.

Example 23, 24, comparative example 1, 2

A metal plate 55 (30 mm x 30 mm) having the shape shown in Fig. 13 is used, and the thickness (Table 3) is changed, with respect to the region 56 of 20 mm x 6 mm, under the conditions shown in Table 3, Fig. 2 With the irradiation pattern shown to (b), it carried out similarly to Examples 1-16, and irradiated the laser beam.

The amount of deformation of the metal plate 55 after irradiation with a laser beam was measured. The measuring method is demonstrated with reference to FIGS. 14(a)-(c). 14(a) and 14(b) are diagrams showing the state before and after laser light irradiation, and FIG. 14(b) is exaggerated to show the deformation for easy understanding.

The amount of deformation is determined by placing the metal plate 55 after laser light irradiation on the measuring table 60 having the flat surface 61, and the distance (d1) between the surfaces on both opposite sides and the plane 61 of the measuring table 60 d2) was determined by measuring with a scale loupe (3010S: manufactured by Ikeda Lens Kogyo Co., Ltd.). The number of measurements is 5, and the average value calculated|required from (5xd1+5xd2)/10 is shown in Table 3.

As is clear from Table 3, although it deform|transformed slightly in Comparative Examples 1 and 2 which continuously irradiated the laser beam, there was no deformation|transformation (curvature) in Examples 23 and 24. From this result, it was confirmed that the roughening method of this invention is effective with respect to the metal molded object with small thickness. In addition, as a result of visual confirmation, Examples 23 and 24 had little amount of spatter compared with Comparative Examples 1 and 2.

Example 25, comparative example 3

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

As is clear from Table 4, although it deform|transformed slightly in the comparative example 3 which continuously irradiated the laser beam, there was no deformation|transformation (curvature) in Example 25. From this result, it was confirmed that the roughening method of this invention is effective with respect to the metal molded object with small thickness. In addition, as a result of visual confirmation, Example 25 had a small amount of spatter compared with Comparative Example 3.

Example 26-33

The entire surface (the area of 20 mm ² ) of the surface 51 of the metal molded body 50 (aluminum A5052) having the shape and dimensions shown in FIG. 4 is irradiated with laser light under the conditions shown in Table 5, and the surface ( 51), the laser beam irradiation surface was roughened. However, while continuously irradiating the laser beam, the duty ratio was adjusted by operating the galvanometer mirror and pulsed. SEM photographs of the surface of the aluminum molded body after laser beam irradiation of Examples 30 to 33 are shown in Figs. 15 to 18 . It carried out similarly to Examples 1-16, and performed each measurement.

The following laser devices were used.

Oscillator: IPG-Yb Fiber; YLR-300-SM (product made by IPG)

Condenser: fc=80mm/fθ=100mm

Out-of-focus distance: ±0mm (constant)

Galvano Stan Head: Squirrel 16 (manufactured by ARGES)

Galvano Controller: ASC-1

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

As can be seen from Table 5 and Figs. 15 to 18, even if the method of operating the galvanometer mirror and pulsed was applied, it was possible to roughen the duty ratio by adjusting the duty ratio as in the other examples.

In addition, for example, "On time" of Example 26 "100 μsec" has a frequency of 5000 Hz (since it is 5000 vibrations per second, 1 vibration (for example, the interval between one mountain and a neighboring mountain) is 200 μsec ), 100 μsec indicates that the laser light is irradiated, and the remaining 100 μsec indicates that the laser light is not irradiated. At this time, the duty ratio becomes 100/200=50.

(industrial applicability)

The roughened metal molded body obtained by the roughening method of the metal molded body of the present invention can be used as an intermediate for manufacturing a composite molded body described in the invention of Japanese Patent No. 5701414, and the abrasive described in Japanese Patent Application Laid-Open No. 2016-36884; It can be used for the carrier of microparticles|fine-particles described in Unexamined-Japanese-Patent No. 2016-7589, and the use described in Paragraph No. 0037 of Unexamined-Japanese-Patent No. 2016-43413.

Claims (8)

A method for roughening a metal molded body, comprising:
With respect to the surface of the metal molded body, using a laser device, the energy density is 10 to 1000 MW / cm ² It has a step of irradiating continuously excited laser light at an irradiation rate of 2000 mm / sec or more,
When irradiating the laser beam continuously excited so that the said laser beam irradiation process may become a straight line, a curve, or a combination of a straight line and a curve with respect to the surface of the metal molded object used as a roughening object,
By using a fiber laser device in which a direct modulation type modulation device that directly converts the laser driving current is connected to a laser power source, the duty ratio obtained by the following equation from the ON time and OFF time of the laser light output is adjusted, The roughening method of a metal molded object which is a process of irradiating so that the irradiated part and non-irradiated part of light may be produced alternately.
Duty ratio (%) = ON time/(ON time + OFF time) × 100 A method for roughening a metal molded body, comprising:
With respect to the surface of the metal molded body, using a laser device, the energy density is 10 to 1000 MW / cm ² It has a step of irradiating continuously excited laser light at an irradiation rate of 2000 mm / sec or more,
When irradiating the laser beam continuously excited so that the said laser beam irradiation process may become a straight line, a curve, or a combination of a straight line and a curve with respect to the surface of the metal molded object used as a roughening object,
By using a combination of a galvanometer mirror and a galvano controller to pulse laser light continuously oscillated from a laser oscillator by a galvano controller, the duty ratio obtained from the ON time and OFF time of the laser light output by the following equation A method of roughening a metal molded body, which is a process of irradiating a laser beam irradiated portion and a non-irradiated portion alternately through a galvanometer by adjusting the .
Duty ratio (%) = ON time/(ON time + OFF time) × 100 A method for roughening a metal molded body, comprising:
With respect to the surface of the metal molded body, using a laser device, the energy density is 10 to 1000 MW / cm ² It has a step of irradiating continuously excited laser light at an irradiation rate of 2000 mm / sec or more,
When irradiating the laser beam continuously excited so that the said laser beam irradiation process may become a straight line, a curve, or a combination of a straight line and a curve with respect to the surface of the metal molded object used as a roughening object,
A method for roughening a metal molded body, which is a step of irradiating a laser beam irradiated portion and a non-irradiated portion alternately by adjusting the duty ratio obtained by the following formula by a method of mechanically chopping and pulsed.
Duty ratio (%) = ON time/(ON time + OFF time) × 100 A method for roughening a metal molded body, comprising:
With respect to the surface of the metal molded body, using a laser device, the energy density is 10 to 1000 MW / cm ² It has a step of irradiating continuously excited laser light at an irradiation rate of 2000 mm / sec or more,
When irradiating the laser beam continuously excited so that the said laser beam irradiation process may become a straight line, a curve, or a combination of a straight line and a curve with respect to the surface of the metal molded object used as a roughening object,
On the surface of the metal molded body to be roughened, after continuously irradiating a continuously excited laser beam in a state in which a masking material that does not pass the laser beam is disposed at an interval, it is a step of removing the masking material. cotton method. A method for roughening a metal molded body, comprising:
With respect to the surface of the metal molded body, using a laser device, the energy density is 10 to 1000 MW / cm ² It has a step of irradiating continuously excited laser light at an irradiation rate of 2000 mm / sec or more,
When irradiating the laser beam continuously excited so that the said laser beam irradiation process may become a straight line, a curve, or a combination of a straight line and a curve with respect to the surface of the metal molded object used as a roughening object,
Using the Q switch pulse oscillation method, the duty ratio obtained from the ON time and OFF time of the output of the laser light is adjusted by the following equation, and the irradiated portion and the non-irradiated portion are irradiated so that the laser light irradiated portion and the non-irradiated portion are alternately generated. of the roughening method.
Duty ratio (%) = ON time/(ON time + OFF time) × 100 6. The method of claim 5,
The energy density is 10 to 700 MW/cm ² , The method for roughening a metal molded body, characterized in that the irradiation rate is 2000 to 15,000 mm/sec. 6. The method of claim 5,
The length (L1) of the irradiated portion of the laser beam and the length (L2) of the non-irradiated portion are L1/(L1+L2) = 0.1 to 0.9, and the length of L1 is 0.1 to 10 mm. Way. 8. The method according to any one of claims 5 to 7,
A method for roughening a metal molded body, characterized in that the metal molded body is a molded body having a thickness of 5 mm or less at a portion irradiated with a laser beam.

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