WO2013077277A1 - Procédé de fabrication d'un moulage composite - Google Patents

Procédé de fabrication d'un moulage composite Download PDF

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Publication number
WO2013077277A1
WO2013077277A1 PCT/JP2012/079883 JP2012079883W WO2013077277A1 WO 2013077277 A1 WO2013077277 A1 WO 2013077277A1 JP 2012079883 W JP2012079883 W JP 2012079883W WO 2013077277 A1 WO2013077277 A1 WO 2013077277A1
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WIPO (PCT)
Prior art keywords
molded body
laser
metal
producing
resin
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PCT/JP2012/079883
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English (en)
Japanese (ja)
Inventor
奥村有道
朝見芳弘
北川友紀
Original Assignee
株式会社ダイセル
ダイセルポリマー株式会社
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Application filed by 株式会社ダイセル, ダイセルポリマー株式会社 filed Critical 株式会社ダイセル
Priority to KR1020147014049A priority Critical patent/KR20140095514A/ko
Priority to CN201280057291.7A priority patent/CN103946005A/zh
Publication of WO2013077277A1 publication Critical patent/WO2013077277A1/fr

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C37/00—Component parts, details, accessories or auxiliary operations, not covered by group B29C33/00 or B29C35/00
    • B29C37/0078—Measures or configurations for obtaining anchoring effects in the contact areas between layers
    • B29C37/0082—Mechanical anchoring
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
    • B29C45/14—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor incorporating preformed parts or layers, e.g. injection moulding around inserts or for coating articles
    • B29C45/14311—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor incorporating preformed parts or layers, e.g. injection moulding around inserts or for coating articles using means for bonding the coating to the articles
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C39/00—Shaping by casting, i.e. introducing the moulding material into a mould or between confining surfaces without significant moulding pressure; Apparatus therefor
    • B29C39/02—Shaping by casting, i.e. introducing the moulding material into a mould or between confining surfaces without significant moulding pressure; Apparatus therefor for making articles of definite length, i.e. discrete articles
    • B29C39/10—Shaping by casting, i.e. introducing the moulding material into a mould or between confining surfaces without significant moulding pressure; Apparatus therefor for making articles of definite length, i.e. discrete articles incorporating preformed parts or layers, e.g. casting around inserts or for coating articles
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
    • B29C45/14—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor incorporating preformed parts or layers, e.g. injection moulding around inserts or for coating articles
    • B29C45/14311—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor incorporating preformed parts or layers, e.g. injection moulding around inserts or for coating articles using means for bonding the coating to the articles
    • B29C2045/14327—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor incorporating preformed parts or layers, e.g. injection moulding around inserts or for coating articles using means for bonding the coating to the articles anchoring by forcing the material to pass through a hole in the article
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
    • B29C45/14—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor incorporating preformed parts or layers, e.g. injection moulding around inserts or for coating articles
    • B29C2045/1486—Details, accessories and auxiliary operations
    • B29C2045/14868—Pretreatment of the insert, e.g. etching, cleaning
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
    • B29K2705/00—Use of metals, their alloys or their compounds, for preformed parts, e.g. for inserts

Definitions

  • the present invention relates to a method for producing a composite molded body comprising a metal molded body and a resin molded body.
  • Japanese Patent No. 4020957 discloses a metal surface for bonding with a dissimilar material (resin) including a step of laser scanning in one scanning direction and a step of laser scanning in a scanning direction crossing the metal surface. The invention of the laser processing method is described.
  • Japanese Patent Application Laid-Open No. 2010-167475 discloses an invention of a laser processing method in which laser scanning is performed in a superposed manner a plurality of times in the invention of Japanese Patent No. 4020957.
  • Japanese Patent No. 4020957 and Japanese Patent Application Laid-Open No. 2010-167475 need to be laser-scanned in two crossing directions, so there is room for improvement in that the processing time is too long. . Furthermore, since sufficient surface roughening treatment can be performed by laser scanning in the cross direction, it is considered that the bonding strength can be increased, but the surface roughness state is not uniform, and the directionality of the strength of the bonded portion between the metal and the resin There is a problem that may not be stable.
  • the joint surface has a complicated shape or a shape including a narrow portion (for example, a star shape, a triangle, or a dumbbell type)
  • the surface is partially roughened by the laser scanning method in the cross direction. As a result of non-uniformity, it may be considered that sufficient bonding strength cannot be obtained.
  • Japanese Patent Application Laid-Open No. 10-294024 describes a method of manufacturing an electrical / electronic component in which a metal surface is irradiated with a laser beam to form irregularities, and a resin, rubber, or the like is injection-molded on the irregularity formation site.
  • a metal surface is irradiated with a laser beam to form irregularities
  • a resin, rubber, or the like is injection-molded on the irregularity formation site.
  • the surface of a long metal coil is irradiated with a laser to form irregularities.
  • the surface of the long metal coil is roughened in a striped or satin shape.
  • paragraph No. 19 the surface of the long metal coil is roughened in a stripe, dotted, wavy, knurled, or satin. It is described.
  • the purpose of laser irradiation is to form fine irregular irregularities on the metal surface, thereby enhancing the anchor effect.
  • the object to be processed is a long metal coil, it is considered that any irregularities are inevitably formed into fine irregular irregularities. Therefore, the invention of Japanese Patent Laid-Open No. 10-294024 is the same technology as the invention of forming fine irregularities on the surface by laser irradiation in the cross direction as in the inventions of Japanese Patent Nos. 4020957 and 2010-167475. Disclosing the ideal idea. Summary of the Invention
  • the present invention provides a composite molded body that can increase the bonding strength between a metal molded body and a resin molded body while reducing the laser irradiation area on the bonding surface of the metal molded body and suppressing the degree of surface roughening. It is an object to provide a manufacturing method.
  • the present invention A step of irradiating a laser so as to form a plurality of independent dots in the shape of a joint on the metal molded body,
  • a method for producing a composite molded body comprising a step of placing a portion including a joining surface of a metal molded body in which a plurality of independent dots are formed in a mold, and insert molding a resin to be the resin molded body.
  • the ratio (dep / D) of the opening diameter (D) of the hole to the depth (dep) of the hole is in the range of 1.0 to 10.
  • a method for producing a composite molded body is provided.
  • the present invention provides other means for solving the problems, A step of irradiating a laser so that a groove composed of a plurality of holes is formed on the joint surface of the metal molded body, A method for producing a composite molded body comprising a step of placing a portion including a joining surface of a metal molded body in which the groove is formed in a mold, and insert molding a resin to be the resin molded body, When forming the groove in the laser irradiation process, a ratio (dep / W) of the groove width (W) to the groove depth (dep) is in the range of 1.0 to 10. A method for producing a molded body is provided.
  • the present invention provides a further solution to the problem, A step of irradiating a laser so as to form a plurality of independent protrusions on the joint surface of the metal molded body, A method for producing a composite molded body comprising a step of placing a portion including a joint surface of a metal molded body in which the plurality of convex portions are formed in a mold, and insert molding a resin to be the resin molded body, When forming independent protrusions in the laser irradiation process, the ratio (h / Dis) between the distance (Dis) between adjacent protrusions and the height (h) of the protrusions is in the range of 1.0 to 10. Provided is a method for producing a composite molded body.
  • FIG. 1 is a plan view for explaining a method of forming independent dots in the laser irradiation step of the present invention.
  • FIG. 2 is a cross-sectional view in the thickness direction of a metal molded body including dot-like independent holes in the laser irradiation step of the present invention.
  • FIG. 3A is a plan view for explaining the groove forming method in the laser irradiation step of the present invention, and FIG. 3B is a groove forming method having a laser irradiation pitch different from that in FIG. It is a top view for demonstrating.
  • FIG. 4A is a plan view of a groove in the laser irradiation step of the present invention, and FIG.
  • FIG. 4B is a cross-sectional view in the thickness direction of a metal molded body including the groove of FIG. 5 is a plan view for explaining a method of forming a convex portion in the laser irradiation step of the present invention.
  • 6A is a cross-sectional view in the width direction of the convex portion formed in FIG. 5, and FIG. 6B is a cross-sectional view in the width direction of another embodiment.
  • FIG. 7 is an explanatory diagram of a method of irradiating a metal molded body with a laser in the example.
  • FIG. 8 is an explanatory diagram of a laser irradiation method for the metal molded body shown in FIG. FIG.
  • FIG. 10 is a view showing a micrograph (450 ⁇ ) of the surface of the metal molded body after laser scanning in Example 4.
  • FIG. 11 is a view showing a scanning electron micrograph (50 ⁇ ) of a cross section of a metal molded body after laser scanning in Example 4.
  • 10 is a metal molded body
  • 11 is a hole
  • 21-28 is a hole
  • 30 is a groove
  • 41 is a convex part.
  • the method for producing the composite molded body of the present invention is based on the difference in the laser irradiation process on the surface of the metal molded body,
  • the laser irradiation step in the first manufacturing method is a step of performing laser irradiation so as to form a large number of dot-like independent holes on the surface of the metal molded body 10 to be a joint surface with the resin molded body.
  • a large number of independent holes 11 (11a, 11b, 11c, etc.) are formed as shown in FIG.
  • a large number of dot-like independent holes 11 are formed at a predetermined interval (pitch) as shown in FIG.
  • the pitches P1, P2,... Between the numerous dot-like independent holes 11 (11a, 11b, 11c...) are preferably 30 to 300 ⁇ m in order to increase the bonding strength with the resin molding, It is preferable that it is 150 micrometers.
  • the distance between the pitches P1 and P2 is the distance between the center points of the adjacent holes 11a and 11b and the holes 11b and 11c.
  • the distances between the pitches P1 and P2 are preferably set to be the same, but can be partially different. For example, when laser scanning is performed on a square surface, a uniform pitch is used when forming dot-shaped holes along each side, and a narrow pitch is used when laser irradiation is performed along corners. be able to.
  • a large number of dot-like independent holes 11 have a cross-sectional shape as shown in FIGS. 2 (a) to 2 (d), for example.
  • One hole 11 has a ratio (dep / D) of a hole opening diameter (D) to a hole depth (dep) in the range of 1.0 to 10, preferably 1.2 to 8. 0.0, more preferably in the range of 1.5 to 5.0.
  • the opening diameter (D) of the hole 11 is preferably 30 to 200 ⁇ m, more preferably 50 to 150 ⁇ m.
  • the depth (dep) of the hole 11 is preferably adjusted to be within 50% of the thickness of the metal molded body 10 in order to maintain the strength of the metal molded body 10.
  • one hole 11 (11a to 11c) as shown in FIGS. 1 and 2 is formed in the laser irradiation step
  • 1 to 400 shots of pulsed laser may be irradiated to form one independent hole 11. It is preferable to irradiate 1 to 200 shots of a pulse laser.
  • the opening part diameter (D) of the hole 11 can also be expanded by irradiating, shifting a laser irradiation position.
  • the beam diameter of the laser to be irradiated may be the same, or for each shot or multiple times It may be different for each shot.
  • irradiation is performed with the same laser beam diameter.
  • the laser beam diameter is gradually reduced for irradiation.
  • it can be obtained by changing the irradiation angle of the laser beam.
  • irradiation is first performed with a beam having the same diameter, and then irradiation with a beam having a smaller diameter.
  • laser irradiation is performed so as to form a large number of dot-shaped independent holes on the joint surface of the metal molded body.
  • a straight line dotted line
  • a curved line curved line
  • Marking can be performed by forming a figure or the like consisting of a curve.
  • laser irradiation is applied to the end face of a round bar with a circular cross section (joint surface of a metal molded body)
  • laser irradiation is performed to form a plurality of concentric circles having different diameters, or laser irradiation is performed to form a spiral. It is possible to irradiate a laser beam in the shape of many polka dots.
  • laser irradiation can be performed in the same manner as in the circular shape described above, depending on the shape (triangle, square, hexagon, ellipse, indeterminate shape, etc.) of the joint surface of the metal molded body.
  • the metal molded body to which the laser irradiation step is applied is not particularly limited, and a molded body made of a known metal can be appropriately selected according to the application.
  • the molded object chosen from iron, various stainless steel, aluminum or its alloy, copper, magnesium, and an alloy containing them can be mentioned.
  • a known laser can be used in the laser irradiation step of the first production method, for example, YAG laser, semiconductor laser, glass laser, ruby laser, He—Ne laser, nitrogen laser, chelate laser, and dye laser are used. be able to.
  • the insert molding method is not particularly limited, and a method of injecting a molten thermoplastic resin, thermoplastic elastomer or thermosetting resin (prepolymer) into a mold, and heating and pressing a metal molded body and a resin molded body. It is possible to apply a method or the like. When a thermosetting resin (prepolymer) is used, post-curing treatment is performed.
  • the thermoplastic resin can be appropriately selected from known thermoplastic resins depending on the application.
  • polyamide-based resins aliphatic polyamides such as PA6 and PA66, aromatic polyamides
  • copolymers containing styrene units such as polystyrene, ABS resin, AS resin, polyethylene, copolymers containing ethylene units, polypropylene, propylene
  • thermosetting resin can be appropriately selected from known thermosetting resins depending on the application.
  • urea resin, melamine resin, phenol resin, resorcinol resin, epoxy resin, polyurethane, and vinyl urethane can be mentioned.
  • thermoplastic elastomer can be appropriately selected from known thermoplastic elastomers according to the application. Examples thereof include styrene elastomers, vinyl chloride elastomers, olefin elastomers, urethane elastomers, polyester elastomers, nitrile elastomers, and polyamide elastomers.
  • thermoplastic resins, thermosetting resins, and thermoplastic elastomers can be blended with known fibrous fillers.
  • known fibrous fillers include carbon fibers, inorganic fibers, metal fibers, and organic fibers. Carbon fibers are well known, and PAN-based, pitch-based, rayon-based, etc. can be used, but PAN-based and pitch-based ones are preferred.
  • the inorganic fiber include glass fiber, basalt fiber, silica fiber, silica / alumina fiber, zirconia fiber, boron nitride fiber, and silicon nitride fiber, and glass fiber is preferable.
  • the metal fiber include fibers made of stainless steel, aluminum, copper, and the like, and stainless steel fibers are preferable.
  • Organic fibers include polyamide fibers (fully aromatic polyamide fibers, semi-aromatic polyamide fibers in which either diamine or dicarboxylic acid is an aromatic compound, aliphatic polyamide fibers), polyvinyl alcohol fibers, acrylic fibers, polyolefin fibers, Polyoxymethylene fiber, polytetrafluoroethylene fiber, polyester fiber (including wholly aromatic polyester fiber), polyimide fiber, liquid crystal polyester fiber, polyphenylene sulfide fiber, cellulose fiber, and regenerated cellulose fiber can be used. More preferred are wholly aromatic polyamide fibers (aramid fibers), cellulose fibers, and regenerated cellulose fibers.
  • these fibrous fillers those having a fiber diameter in the range of 3 to 60 ⁇ m can be used.
  • the holes of the marking pattern 5 formed on the joint surface 1a of the metal molded body 1 are used. It is preferable to use a fiber having a smaller fiber diameter than the opening diameter (D).
  • a fibrous filler having a fiber diameter smaller than the opening diameter (D) of the hole of the marking pattern 5 is used, a part of the fibrous filler has entered the hole of the marking pattern 5 of the metal molded body. This is preferable because a composite molded body in a state is obtained and the bonding strength between the metal molded body and the resin molded body is increased.
  • the blending amount of the fibrous filler with respect to 100 parts by mass of the thermoplastic resin, thermosetting resin, and thermoplastic elastomer is preferably 5 to 250 parts by mass.
  • the laser irradiation step in the second manufacturing method is a step of performing laser irradiation (laser scanning) so that a groove composed of a plurality of holes is formed on the surface of the metal molded body 10 which is a bonding surface with the resin molded body. It is.
  • laser scanning process as shown in FIGS. 3A and 3B, a large number of holes 21 to 28 and the like are formed so as to overlap each other, so that the groove 30 as a whole is formed as shown in FIG. Is a step of forming.
  • 3 (a) and 3 (b) are examples in which the interval (pitch) between the holes is different, and the pitch in FIG. 3 (b) is larger.
  • the pitch is the same as P1 and P2 shown in FIG. 1, and is the distance between the centers of adjacent holes.
  • the groove 30 has a cross-sectional shape as shown in FIG.
  • the groove 30 has a ratio (dep / W) of the groove width (W) to the groove depth (dep) in the range of 1.0 to 10, preferably 1.2 to 8.0.
  • the range of 1.5 to 5.0 is preferable.
  • the width of the groove 30 is preferably 30 to 200 ⁇ m, more preferably 50 to 150 ⁇ m.
  • the depth of the holes 11 is preferably adjusted to be within 50% of the thickness of the metal molded body 10.
  • the laser scanning speed can be selected according to the laser output, and can generally be selected within the range of 0.1 to 20000 mm / sec, preferably 1 to 12000 mm / sec, more preferably 5 to 2000 mm / sec, 10 More preferably, it is ⁇ 1000 mm / sec.
  • the distance between adjacent grooves is preferably 30 to 300 ⁇ m, and more preferably 40 to 150 ⁇ m.
  • laser irradiation is performed so as to form a groove on the joint surface of the metal molded body.
  • marking may be performed so as to form a straight line, a curved line, a straight line and / or a figure composed of a curved line as a whole. it can.
  • laser irradiation is applied to the end face of a round bar with a circular cross section (joint surface of a metal molded body)
  • laser irradiation is performed to form a plurality of concentric circles having different diameters, or laser irradiation is performed to form a spiral. It is possible to irradiate a laser beam in the shape of many polka dots.
  • laser irradiation can be performed in the same manner as in the circular shape described above, depending on the shape (triangle, square, hexagon, ellipse, indeterminate shape, etc.) of the joint surface of the metal molded body.
  • the metal molded body to which the laser scanning process in the second production method is applied is not particularly limited, and a molded body made of a known metal can be appropriately selected according to the application.
  • a molded body made of a known metal can be appropriately selected according to the application.
  • the molded object chosen from iron, various stainless steel, aluminum or its alloy, copper, magnesium, and an alloy containing them can be mentioned.
  • a known laser can be used in the laser scanning step of the second production method, for example, a YAG laser, a semiconductor laser, a glass laser, a ruby laser, a He—Ne laser, a nitrogen laser, a chelate laser, or a dye laser is used. be able to.
  • the same method as the first manufacturing method can be applied to the insert molding step of the second manufacturing method.
  • a fibrous filler is used as the molding material for the resin molding, one having a fiber diameter in the range of 3 to 60 ⁇ m can be used.
  • a fibrous filler having a fiber diameter smaller than the width (W) of the groove of the marking pattern 5 is used, a part of the fibrous filler enters the groove of the marking pattern 5 of the metal molded body.
  • a composite molded body is obtained, which is preferable because the bonding strength between the metal molded body and the resin molded body can be increased.
  • the laser irradiation step in the third manufacturing method is a step of performing laser irradiation (laser scanning) so as to form a plurality of independent convex portions on the joint surface of the metal molded body.
  • laser scanning step laser irradiation is performed so that a plurality of independent convex portions 41 as shown in FIG. 5 are formed on the surface of the metal molded body 10 which is a joint surface with the resin molded body.
  • the metal removal surface 42 including the concave portions (grooves) is formed by laser scanning the surface of the metal molded body 10 on which the convex portions 41 are not formed.
  • the convex portion 41 (and the metal removal surface 42) having such a predetermined height
  • a method of performing laser scanning a plurality of times on the joint surface of the metal molded body 10 can be applied.
  • the height (h) of the convex portion is relatively high, and when the number of scans is decreased, the height of the convex portion (h) is relatively low.
  • the plurality of independent convex portions 41 are formed with a predetermined interval between adjacent convex portions 41 as shown in FIG.
  • the distance (Dis) between the adjacent convex portions 41 is preferably 40 to 250 ⁇ m, more preferably 80 to 200 ⁇ m.
  • the distance (Dis) between the adjacent convex portions 41 is preferably set to be the same, but can be partially different. For example, when laser scanning is performed on a square surface, a uniform pitch is used when forming dot-shaped holes along each side, and a narrow pitch is used when laser irradiation is performed along corners. be able to.
  • the interval (W) between adjacent convex portions 41 is preferably 30 to 200 ⁇ m, and more preferably 50 to 150 ⁇ m.
  • the width (length of one side) is preferably 30 to 200 ⁇ m, and more preferably 50 to 150 ⁇ m.
  • the independent convex part 41 has a cross-sectional shape as shown in FIGS. 6 (a) and 6 (b), for example.
  • the height (h) of the convex portion 41 is preferably adjusted to be within 50% of the thickness of the metal molded body 10 in order to maintain the strength of the metal molded body 10.
  • the plurality of independent convex portions 41 have a ratio (h / Dis) between the distance (Dis) between the adjacent convex portions 41 and the height (h) of the convex portions 41 in the range of 1.0 to 10. And preferably in the range of 1.2 to 8, more preferably 1.5 to 5.
  • laser irradiation is performed so as to form a large number of independent protrusions on the joint surface of the metal molded body 10, but the entire protrusion is a straight line (dotted line), a curve (curved line), a straight line. And / or marking can be performed so as to form a figure made of a curve.
  • laser irradiation is applied to the end face of a round bar having a circular cross section (joint surface of a metal molded body)
  • laser irradiation is performed so as to form a plurality of concentric circles having different diameters as the entire convex portion, or spirals are formed as the entire convex portion.
  • Laser irradiation can be performed so as to form, or laser irradiation can be performed in the form of a number of polka dots as the entire convex portion.
  • laser irradiation can be performed in the same manner as in the circular shape described above, depending on the shape (triangle, square, hexagon, ellipse, indeterminate shape, etc.) of the joint surface of the metal molded body.
  • the metal molded body to which the laser scanning step in the third production method is applied is not particularly limited, and a molded body made of a known metal can be appropriately selected according to the application.
  • a molded body made of a known metal can be appropriately selected according to the application.
  • the molded object chosen from iron, various stainless steel, aluminum or its alloy, copper, magnesium, and an alloy containing them can be mentioned.
  • a known laser can be used in the laser scanning step of the third manufacturing method, for example, a YAG laser, a semiconductor laser, a glass laser, a ruby laser, a He—Ne laser, a nitrogen laser, a chelate laser, or a dye laser is used. be able to.
  • the same method as the first manufacturing method can be applied to the insert molding step of the third manufacturing method.
  • a fibrous filler is used as the molding material for the resin molding, one having a fiber diameter in the range of 3 to 60 ⁇ m can be used. Among these, for example, it is preferable to use a fiber having a smaller fiber diameter than the interval (W) between the protrusions formed on the joint surface of the metal molded body 10.
  • a fibrous filler having a fiber diameter smaller than the interval (W) between the convex portions of the marking pattern 5 is used, a part of the fibrous filler is present between the convex portions of the marking pattern 5 of the metal molded body. A composite molded body in an intruded state is obtained, which is preferable because the bonding strength between the metal molded body and the resin molded body is increased.
  • ⁇ Measurement method> Hole diameter (D), groove width (W), and distance between protrusions (Dis) An image was taken from above the metal joint surface processed by laser irradiation using a CCD (Keyence's digital microscope VHX, lens VH-Z450) in a state where the top surface of the uneven surface is in focus at a lens magnification of 450 times. . With respect to the hole diameter (D), the dimension of D in the portion in focus on the image was measured at 15 points, and the average value was obtained. For the groove width (W), the W dimension was similarly measured at 15 points, and the average value was obtained. Similarly, for the distance (Dis) between the convex portions, 15 points of the Dis interval were measured, and the average value was obtained. An example of a photomicrograph used for the measurement is shown in FIG.
  • a line 1 passing through two or more points on the bottom surface (concave part) of the convex part is drawn with a visual field of 2 mm or more, and the vertex of the convex part passes through two or more points and is parallel to line 1 2 was subtracted.
  • the distance between the lines 1 and 2 was measured, and the one with the largest distance was defined as the hole depth (Dep), the groove depth (Dep), and the height of the convex part (h).
  • An example (Example 4) of the micrograph used for the measurement is shown in FIG.
  • Examples 1 and 2 (first manufacturing method) A composite molded body made of a metal plate (SUS304) or aluminum plate (AL A5052) and polyamide 66 was produced.
  • YAG laser for laser irradiation area (bonding surface) 15 (40 mm 2 [4 mm ⁇ 10 mm]) indicated by metal plate (SUS304 or AL (A5052)) (width 15 mm, length 60 mm, thickness 1 mm) shown in FIG. was used, and laser irradiation was performed at an angle of 90 degrees with respect to the bonding surface 15 of the metal plate 10 (from directly above).
  • the laser irradiation conditions are as shown in Table 1.
  • a marking pattern made up of a large number of holes is shown in FIG.
  • FIG. 9 shows a state in which the spacer 40 for the tensile test (the spacer 40 is not included in the composite molded body obtained by the method of the present invention) is attached.
  • Example 3 (second manufacturing method), Comparative Examples 1 and 2
  • laser scanning was performed under the laser irradiation conditions shown in Table 2.
  • insert molding was performed in the same manner as in Example 1 to form a composite molded body 30 (with a tensile test spacer 40) shown in FIG. 9, and a tensile test was further performed in the same manner as in Example 1.
  • the results are shown in Table 2.
  • Comparative Examples 1 and 2 could not be measured because they were easily peeled off. From the comparison of the tensile strength between Example 3 and Comparative Examples 1 and 2, it was confirmed that the bonding strength between the metal molded body and the resin molded body can be increased by controlling the dep / W ratio. This fact indicates that if the scanning range is the same, the bonding strength can be increased by performing the manufacturing method (laser scanning step) of the present invention.
  • Examples 4 to 7 (third manufacturing method)
  • the YVO4 laser (vanadium) is applied to the laser irradiation area (bonding surface) 15 (40 mm 2 [4 mm ⁇ 10 mm]) indicated by the metal plate (AL (A5052)) (width 15 mm, length 60 mm, thickness 1 mm) shown in FIG.
  • the laser was scanned at an angle of 90 degrees with respect to the bonding surface 15 of the metal plate 10 (from directly above).
  • the laser scanning conditions are as shown in Table 3.
  • a marking pattern composed of a large number of convex portions is shown in FIG.
  • the convex portion was a quadrangular prism whose lower surface was a square with a side of 70 ⁇ m, and conditions were set so that W was 70 ⁇ m.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Laser Beam Processing (AREA)
  • Injection Moulding Of Plastics Or The Like (AREA)
  • Casting Or Compression Moulding Of Plastics Or The Like (AREA)

Abstract

L'invention porte sur un procédé de fabrication avec lequel on obtient des moulages composites présentant une résistance de joint augmentée entre le moulage métallique et le moulage en résine. Un procédé de fabrication de moulage composite comprenant un procédé d'exposition à un rayonnement laser consistant à former de multiples trous indépendants dans une matrice de points sur la surface de jonction du moulage métallique et un procédé pour disposer la partie, qui comprend la surface de jonction de moulage métallique dans laquelle les multiples trous indépendants ont été formés dans une matrice de points, dans un moule métallique, et pour mouler en insert la résine qui doit devenir le moulage en résine. Le procédé de fabrication de moulage composite règle le rapport (dep/D) du diamètre (D) de l'ouverture du trou à la profondeur (dep) du trou lorsqu'un seul trou est formé dans le procédé d'exposition à un rayonnement laser, dans la plage comprise entre 1,0 et 10.
PCT/JP2012/079883 2011-11-21 2012-11-19 Procédé de fabrication d'un moulage composite WO2013077277A1 (fr)

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US10588225B2 (en) 2017-01-23 2020-03-10 Hewlett-Packard Development Compnay, L.P. Casings of electronic devices
DE102021132222A1 (de) 2020-12-18 2022-06-23 Yasa Limited Statorgehäuse für eine Axialflussmaschine

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DE102021132222A1 (de) 2020-12-18 2022-06-23 Yasa Limited Statorgehäuse für eine Axialflussmaschine

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