JP4517725B2 - Metal resin composite plate - Google Patents
Metal resin composite plate Download PDFInfo
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- JP4517725B2 JP4517725B2 JP2004153497A JP2004153497A JP4517725B2 JP 4517725 B2 JP4517725 B2 JP 4517725B2 JP 2004153497 A JP2004153497 A JP 2004153497A JP 2004153497 A JP2004153497 A JP 2004153497A JP 4517725 B2 JP4517725 B2 JP 4517725B2
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Images
Landscapes
- Panels For Use In Building Construction (AREA)
- Laminated Bodies (AREA)
Description
本発明は、表面側金属板が難削材で構成され、意匠性、強度、耐食性、耐候性、耐久性に優れるものであるにもかかわらず、アルミニウム複合板に一般的に用いられるパネルソー等を用いて工業的に有利に良好な切削加工が行える、優れた切削加工性を有する金属樹脂複合板に関する。 The present invention provides a panel saw or the like generally used for an aluminum composite plate, although the surface side metal plate is composed of a difficult-to-cut material and has excellent design, strength, corrosion resistance, weather resistance, and durability. The present invention relates to a metal-resin composite plate having excellent cutting workability, which can be used for industrially favorable cutting.
樹脂シートを芯材とし、その両面に金属板を接合して構成された金属樹脂複合板はよく知られている。この金属樹脂複合板は、適度な強度と弾性を有する上に、軽量性、意匠性、金属類似の加工性などの数多くの特徴を兼備した材料であり、建築物の外壁・看板などに広く用いられている。 2. Description of the Related Art A metal-resin composite plate configured by using a resin sheet as a core material and joining metal plates to both surfaces thereof is well known. This metal-resin composite plate is a material that has moderate strength and elasticity, and has many features such as lightness, design, and metal-like processability, and is widely used for building exterior walls and signboards. It has been.
このような金属樹脂複合板において、芯材の樹脂シートには、不燃性能を付与させるため、不燃性無機物とポリオレフィン系樹脂の混合物が用いられるが、用途によっては不燃性無機質を含まない樹脂製シートが用いられることもある。 In such a metal-resin composite plate, the resin sheet of the core material is made of a mixture of non-combustible inorganic material and polyolefin resin in order to impart non-combustible performance. May be used.
一方、表裏の金属板の材質としては、アルミニウム、ステンレス鋼、チタンなどが用いられるが、アルミニウムが最も一般的である（以下、表裏の金属板としてアルミニウム板を用いたものを「アルミニウム複合板」と称す場合がある。）。しかし、アルミニウム複合板では十分な耐食性を得ることができないため、表面側を耐食性に優れたチタン板とし、裏面側をステンレス鋼板とした構成の金属樹脂複合板も知られている（特許文献１参照）が、特に、建築物の外壁のように、強度や耐食性において高い性能が要求される場合には、一般に表面及び裏面のいずれにおいても、被削性指数が８０以下の難削材の金属板を用いた金属樹脂複合板が使用される。 On the other hand, aluminum, stainless steel, titanium or the like is used as the material for the front and back metal plates, but aluminum is the most common (hereinafter referred to as “aluminum composite plate” using aluminum plates as the front and back metal plates). Sometimes called). However, since sufficient corrosion resistance cannot be obtained with an aluminum composite plate, a metal resin composite plate having a structure in which the front side is a titanium plate having excellent corrosion resistance and the back side is a stainless steel plate is also known (see Patent Document 1). ) However, when high performance in strength and corrosion resistance is required, especially in the outer wall of a building, generally, a metal plate of a difficult-to-cut material having a machinability index of 80 or less on both the front and back surfaces. A metal resin composite plate using is used.
なお、「被削性指数」とは、金属材料の切削加工性のし易さを示す指数で、本明細書においては、以下の１．の条件で金属材料を切削加工し、工具寿命が６０分となる切削速度を以下の２．によって求め、以下の３．の快削鋼の切削速度を１００としたときの指数を表す。
１．加工条件：
・切削加工の種類：エンドミルによる溝加工
・工具：高速度工具鋼製のスクエアエンドミル
・切削幅：１０〜５０ｍｍ
・切削深さ：０．７５〜１．５ｍｍ
２．切削速度：工具寿命が６０分となる切削速度。
切削速度は以下の式で与えられる。
切削速度（ｍ／ｍｉｎ）
＝π×エンドミルの直径（ｍｍ）×エンドミルの回転数（ｒｐｍ）／１０００
３．基準とする金属材料と被削性指数
ＪＩＳ ＳＵＭ１１の快削鋼（ＪＩＳ Ｇ ４８０４（１９９９）に規定された硫黄快削炭素鋼）又はその同等品を基準とする。各金属材料の被削性指数はこの快削鋼の切削速度を１００とした時の指数で示したものである。
表１に代表的な金属材料の切削速度と被削性指数を示す。
The “machinability index” is an index indicating the ease of cutting workability of a metal material. In the present specification, the following 1. The cutting speed at which the tool life is 60 minutes when the metal material is machined under the following conditions is as follows. The following 3. Represents an index when the cutting speed of the free-cutting steel is 100.
1. Processing conditions:
・ Cutting type: Grooving with end mill ・ Tool: Square end mill made of high-speed tool steel ・ Cutting width: 10 to 50 mm
・ Cutting depth: 0.75 to 1.5 mm
2. Cutting speed: Cutting speed at which the tool life is 60 minutes.
The cutting speed is given by the following formula.
Cutting speed (m / min)
= Π × end mill diameter (mm) × end mill speed (rpm) / 1000
3. Standard metal material and machinability index JIS SUM11 free-cutting steel (sulfur free-cutting carbon steel defined in JIS G 4804 (1999)) or its equivalent is used as a standard. The machinability index of each metal material is indicated by an index when the cutting speed of the free-cutting steel is 100.
Table 1 shows the cutting speed and machinability index of typical metal materials.
しかしながら、金属樹脂複合板を建築物の外壁に使用する外装パネルなどとして使用する場合、通常、金属樹脂複合板の裏面に断面がＶ字状ないしＵ字状の切り込みを設け（以下、このような加工を「Ｖ溝加工」と称す場合がある。）、この切り込みを内側として折り曲げ、トレイ状のパネルに加工することが多い。この場合、裏面側の金属板の被削性が悪いとＶ溝加工に使用できる機械や加工条件に著しい制約が出てくる。 However, when the metal resin composite plate is used as an exterior panel or the like used for an outer wall of a building, a cut having a V-shaped or U-shaped cross section is usually provided on the back surface of the metal resin composite plate (hereinafter referred to as such The processing is sometimes referred to as “V-groove processing”.) In many cases, this notch is bent inside and processed into a tray-like panel. In this case, if the machinability of the metal plate on the back surface side is poor, there are significant restrictions on the machines and machining conditions that can be used for V-groove machining.
例えば、上述のような樹脂シートの表面及び裏面に難削材を積層した金属樹脂複合板の場合、Ｖ溝加工には、加工物に適する回転数や送り速度などの切削条件の精細な設定を要することから、ＣＮＣルーター（Computerized Numerical Control Router）を用いる必要がある。このＣＮＣルーターとは、切削ヘッドが水平な加工テーブル上を動くことによってテーブルの上に置かれた板材にＶ溝加工する機械であり、切削ヘッドはコンピュータープログラムにより、ＸＹＺ軸方向に移動することができるものである。 For example, in the case of a metal resin composite plate in which difficult-to-cut materials are laminated on the front and back surfaces of the resin sheet as described above, in the V-groove processing, fine settings of cutting conditions such as the number of rotations and feed speed suitable for the workpiece are set. Therefore, it is necessary to use a CNC router (Computerized Numerical Control Router). This CNC router is a machine that V-grooves a plate placed on a table by moving the cutting head on a horizontal processing table. The cutting head can be moved in the XYZ axis direction by a computer program. It can be done.
しかしながら、この加工機械は、難削材を用いた金属樹脂複合板のＶ溝加工は可能であるが、装置自体が高価で普及率が低く、特定の加工業者しか加工ができない。また、切削加工速度が遅い上に、特殊なスクエアエンドミルが必要になり、且つ寿命が短いため加工コストが高くつく。 However, this processing machine can perform V-groove processing of a metal resin composite plate using difficult-to-cut materials, but the device itself is expensive and has a low diffusion rate, and can only be processed by a specific processor. In addition, the cutting speed is slow, a special square end mill is required, and the lifetime is short, resulting in high processing costs.
金属樹脂複合板が広く普及するためには、このような高価で特殊な切削加工機械ではなく、一般にアルミニウム複合板に広く用いられているパネルソーのような加工機械を用いて、生産性が良く低コストにＶ溝加工ができる金属樹脂複合材であることが望まれる。 In order for metal-resin composite plates to become widespread, the productivity is low by using processing machines such as panel saws that are generally widely used for aluminum composite plates, rather than such expensive and special cutting machines. A metal-resin composite material capable of V-groove processing at a low cost is desired.
そして、その一方で、金属樹脂複合板には、十分な機械的強度を備える；温度変化に晒されても熱膨張差による変形が生じない；屋外にて長年使用できる耐食性を有する；意匠性に優れる；など、複合材料としての基本的な要求性能を保有していることも要求される。 On the other hand, the metal resin composite plate has sufficient mechanical strength; it does not deform due to a difference in thermal expansion even when exposed to temperature changes; has corrosion resistance that can be used outdoors for many years; It is also required to possess the basic required performance as a composite material.
しかし、表裏面共に難削材を用いた金属樹脂複合板では、これらの基本的な要求性能を満たすことはできても切削加工性が悪く、切削加工性を確保するために表裏で異なる金属板を用いた場合には、上記のような要求性能を満たすことはできず、このような相反する要求を満足し得る金属樹脂複合板は、未だ工業的に確立できていないのが実状である。 However, metal resin composite plates using difficult-to-cut materials on both the front and back surfaces have poor machinability even if they can meet these basic performance requirements, and different metal plates are used on the front and back sides to ensure machinability. In the case where is used, the above-mentioned required performance cannot be satisfied, and a metal resin composite plate that can satisfy such conflicting requirements has not been established industrially.
従って、本発明は、表面側金属板が難削材で構成され、意匠性、強度、耐食性、耐候性、耐久性に優れるものであるにもかかわらず、アルミニウム複合板に一般的に用いられるパネルソー等を用いて工業的に有利に良好な切削加工が行える、優れた切削加工性を有する金属樹脂複合板を提供することを目的とする。 Therefore, the present invention is a panel saw generally used for aluminum composite plates, although the surface side metal plate is made of a difficult-to-cut material and has excellent design, strength, corrosion resistance, weather resistance, and durability. It is an object of the present invention to provide a metal resin composite plate having excellent cutting workability, which can be advantageously cut industrially by using the above.
本発明者等は、強度、耐食性、耐候性、耐久性、意匠性に優れ、しかも切削加工性にも優れた金属樹脂複合板の開発検討を行った結果、上記課題を解決できる特定構造の金属樹脂複合板に関する本発明に到達した。 The inventors of the present invention have developed and studied a metal-resin composite plate that is excellent in strength, corrosion resistance, weather resistance, durability, designability, and excellent in machinability. The present invention relating to a resin composite board has been reached.
本発明の要旨は、樹脂シートと、該樹脂シートの一方の面に接合された、難削材の金属板よりなる表面材と、該樹脂シートの他方の面に接合された、冷間圧延鋼板及び冷間圧延鋼帯並びにこれらの表面処理品（以下、これを「冷延鋼板類」という）からなる群から選ばれる裏面材とを備えてなり、該表面材は、該裏面材に対する熱膨張係数比が０．７〜１．４であり、降伏点又は耐力が１６５ＭＰａ以上で弾性率が１００ＧＰａ以上であり、該表面材の被削性指数が８０以下で、該裏面材の被削性指数が８０より大であり、該樹脂シートの厚さが、該複合板の総板厚の６０〜９０％であることを特徴とする金属樹脂複合板、に存する。 The gist of the present invention is a cold rolled steel sheet joined to a resin sheet, a surface material made of a difficult-to-cut metal plate joined to one surface of the resin sheet, and the other surface of the resin sheet. and cold-rolled steel strip as well as their surface treated products (hereinafter, referred to as "cold-rolled flat products" a) Ri name and a rear material selected from the group consisting of, the surface material is heat to back surface material The expansion coefficient ratio is 0.7 to 1.4, the yield point or proof stress is 165 MPa or more, the elastic modulus is 100 GPa or more, the machinability index of the surface material is 80 or less, and the machinability of the back surface material. index is greater than 80, the thickness of the resin sheet, a metal resin composite plate, wherein 60% to 90% der Rukoto of the total thickness of the plurality plywood consists in.
本発明の金属樹脂複合板は、表面材として難削材の金属板を有するため、強度、耐食性、耐久性に優れ、また、意匠性を高めることも可能である。一方で、このような表面材に対して、冷延鋼板類を裏面材として用いることにより、表裏の金属板の熱膨張係数差による変形の問題もなく、切削加工性にも優れた金属樹脂複合板を提供することができる。 Since the metal-resin composite plate of the present invention has a hard-to-cut metal plate as a surface material, it is excellent in strength, corrosion resistance, and durability, and it is also possible to enhance the design. On the other hand, by using cold-rolled steel sheets as the back material for such a surface material, there is no problem of deformation due to the difference in thermal expansion coefficient between the metal plates on the front and back surfaces, and a metal-resin composite excellent in machinability Board can be provided.
前述の如く、従来においては、表面材と裏面材も共に難削材を選択することで、強度や反りの問題を生じることのない金属樹脂複合板を得ていた。しかしながら、この場合には、切削加工性が悪く、特殊な加工機械や手間が要求され、このために利用範囲が制限されていた。 As described above, conventionally, a metal-resin composite plate that does not cause problems of strength and warpage has been obtained by selecting difficult-to-cut materials for both the front surface material and the back surface material. However, in this case, the machinability is poor, and a special processing machine and labor are required, which limits the range of use.
しかし、本発明においては、裏面材及び表面材として特定の材質及び関係のものを選択することで、従来達成し得なかった、表面材の強度や耐食性、意匠性を損なわず、かつ、反りや変形などの問題を回避し、加工性や施工性を向上させた画期的な金属樹脂複合板を実現した。 However, in the present invention, by selecting specific materials and related materials as the back material and the surface material, the strength, corrosion resistance, and design properties of the surface material, which could not be achieved in the past, are not impaired, and warping and A revolutionary metal-resin composite plate with improved workability and workability has been realized by avoiding problems such as deformation.
即ち、本発明者等は、アルミニウム複合板のＶ溝加工に用いられるようなパネルソー等を用いて、難削材の金属板を表面材とする金属樹脂複合板のＶ溝加工を行う方法を検討した結果、裏面の金属板に冷延鋼板類を用いれば、アルミニウム複合板に使用されているパネルソー等をそのまま用いて、工業的にＶ溝加工が可能であること、更には、表面材と裏面材の金属板の熱膨張係数比、更には表面材の物理的、機械的性質を特定の範囲に維持することによって、熱膨張率の差による反り、機械的性質の差による加重時の性能の悪化などの問題を回避することができることを見出した。 That is, the present inventors examined a method of performing V-groove processing of a metal resin composite plate using a panel saw or the like used for V-groove processing of an aluminum composite plate as a surface material. As a result, if cold-rolled steel sheets are used for the metal plate on the back surface, it is possible to industrially process V-grooves using the panel saw etc. used for the aluminum composite plate as it is, and further, the surface material and the back surface By maintaining the thermal expansion coefficient ratio of the metal plate of the material, and the physical and mechanical properties of the surface material within a specific range, the warpage due to the difference in thermal expansion coefficient and the performance under load due to the difference in mechanical property It was found that problems such as deterioration can be avoided.
金属樹脂複合板の両面の金属板が異なる材質のものであると、芯材の樹脂シートと両面の金属板とを加熱・加圧下で貼り合せ、次いで冷却して金属樹脂複合板を製造する際、熱膨張率の差により金属樹脂複合板に基準以上の反りが生じ、また、製品をユーザーが使用する際、外壁に取りつけた後、直射日光に晒されたときの温度変化による反りの問題も生じる。また、風荷重を受けたときの強度が基準を満たすことが困難となるおそれもある。本発明者らは、特定の比率範囲の熱膨張係数比に表面材と裏面材とを保つことによって、更には表面材の物理的、機械的性質を選択することによって、かかる問題について実用上支障の無い程度にまで抑制できることを見出した。 When the metal plates on both sides of the metal resin composite plate are of different materials, the core resin sheet and the metal plates on both sides are bonded together under heating and pressure, and then cooled to produce the metal resin composite plate Due to the difference in coefficient of thermal expansion, the metal resin composite plate warps above the standard, and when the product is used by the user, after being attached to the outer wall, the problem of warpage due to temperature change when exposed to direct sunlight Arise. Moreover, it may be difficult for the strength when subjected to a wind load to satisfy the standard. The present inventors have impeded practically this problem by keeping the surface material and the back material at a thermal expansion coefficient ratio in a specific ratio range, and further by selecting the physical and mechanical properties of the surface material. It was found that it can be suppressed to the extent that there is no.
本発明の金属樹脂複合板において、表面材は好ましくはステンレス鋼板である。 In the metal-resin composite sheet of the present invention, the table face material is preferably stainless steel.
一方、樹脂シートとしては、不燃性無機物とポリオレフィン系樹脂を主成分とするものが好ましい。 On the other hand, as a resin sheet, what has a nonflammable inorganic substance and polyolefin resin as a main component is preferable.
本発明において、表面材及び裏面材の厚さは各々０．１〜１ｍｍで、裏面材に対する表面材の厚さの比率は０．８〜１．２であることが好ましい。 In the present invention, a thickness of each 0.1~1mm the surface material and backing material, it is good preferable ratio of the thickness of the surface material for the backing material is from 0.8 to 1.2.
本発明によれば、優れた機械的強度、意匠性、耐食性を有し、且つ耐候性にも優れ、温度変化時の熱膨張差による変形が小さいといった複合材としての基本性能を十分に満たした上で、表面側金属板が難削材であるにもかかわらず、金属樹脂複合板としての切削加工性が良好で、アルミニウム複合板に広く用いられているパネルソー等の一般的な加工機械を用いて容易にＶ溝加工をすることができる金属樹脂複合材が提供される。 According to the present invention, it has excellent mechanical strength, design properties, corrosion resistance, excellent weather resistance, and sufficiently satisfies the basic performance as a composite material such as small deformation due to a difference in thermal expansion at the time of temperature change. Above, although the surface side metal plate is a difficult-to-cut material, the machinability as a metal resin composite plate is good, and a general processing machine such as a panel saw widely used for an aluminum composite plate is used. Thus, a metal resin composite material capable of easily performing V-groove processing is provided.
以下に本発明の金属樹脂複合板の実施の形態を詳細に説明する。なお、以下の説明は本発明の実施態様の一例（代表例）であり、本発明はその要旨を超えない限り、以下の内容に特定はされない。 Hereinafter, embodiments of the metal resin composite plate of the present invention will be described in detail. In addition, the following description is an example (representative example) of the embodiment of this invention, and this invention is not specified to the following content, unless the summary is exceeded.
本発明の金属樹脂複合板は、基本的には表面材／樹脂シート／裏面材の積層構造を有する。 The metal resin composite plate of the present invention basically has a laminated structure of a surface material / resin sheet / back material.
金属樹脂複合板の表面、裏面は任意に決められるものではあるが、ここでは、通常、外壁などで美観が求められる側を表面とし、その反対側でＶ溝加工などの折り曲げ加工が施される側を裏面とする。 The front and back surfaces of the metal-resin composite plate can be arbitrarily determined. Here, however, the side of the outer wall or the like that requires aesthetic appearance is usually the front surface, and the other side is subjected to bending processing such as V-groove processing. The side is the back side.
［裏面材］
本発明の金属樹脂複合板の裏面材として使用される冷延鋼板類としては、冷間圧延鋼板、冷間圧延鋼帯、或いは、これらにめっきや塗装等の表面処理を施したものが用いられる。
[Back material]
The cold-rolled steel sheets used as the back material of the metal resin composite plate of the present invention are cold-rolled steel sheets, cold-rolled steel strips, or those subjected to surface treatment such as plating or painting. .
裏面材としては、具体的には次のようなものが挙げられる。
ＪＩＳ Ｇ３１４１ 冷間圧延鋼板及び鋼帯
ＪＩＳ Ｇ３３０２ 溶融亜鉛めっき鋼板及び鋼帯
ＪＩＳ Ｇ３３１２ 塗装溶融亜鉛めっき鋼板及び鋼帯
ＪＩＳ Ｇ３３１２ 溶融アルミニウムめっき鋼板及び鋼帯
ＪＩＳ Ｇ３３１７ 溶融亜鉛−５％アルミニウム合金めっき鋼板及び鋼帯
ＪＩＳ Ｇ３３１８ 塗装溶融亜鉛−５％アルミニウム合金めっき鋼板及び鋼帯
ＪＩＳ Ｇ３３２１ 溶融５５％アルミニウム−亜鉛合金めっき鋼板及び鋼帯
ＪＩＳ Ｇ３１２２ 塗装溶融５５％アルミニウム−亜鉛合金めっき鋼板及び鋼帯
Specific examples of the back material include the following.
JIS G3141 Cold rolled steel plate and steel strip JIS G3302 Hot dip galvanized steel plate and steel strip JIS G3312 Painted hot dip galvanized steel plate and steel strip JIS G3312 Hot dip galvanized steel plate and steel strip JIS G3317 Hot dip -5% aluminum alloy plated steel plate and steel JIS G3318 Painted hot-dip zinc-5% aluminum alloy-plated steel plate and steel strip JIS G3321 Hot-melted 55% aluminum-zinc alloy-plated steel plate and steel strip JIS G3122 Painted hot-dip 55% aluminum-zinc alloy-plated steel plate and steel strip
裏面材に用いる冷延鋼板類は、切削加工が容易なものであって、前記した被削性指数が、８０より大、中でも９０以上で、特に快削鋼の１００に近いものであることが好ましい。 The cold-rolled steel sheets used for the back material are those that are easy to cut and have a machinability index greater than 80, particularly 90 or more, and particularly close to 100 of free-cutting steel. preferable.
また、冷延鋼板類の熱膨張係数は、通常１１×１０−６／℃〜１３×１０−６／℃であればよく、降伏点又は耐力は通常２３０ＭＰａ以上あればよく、上限としては４００ＭＰａ以下程度あればよい。更に、弾性率は、通常２００ＧＰａ以上、２２０ＧＰａ以下程度であればよい。なお、本明細書において、熱膨張係数は２０〜１００℃における線熱膨張率を示す。 Moreover, the thermal expansion coefficient of cold-rolled steel sheets may be usually 11 × 10 −6 / ° C. to 13 × 10 −6 / ° C., and the yield point or proof stress may be usually 230 MPa or more, and the upper limit is 400 MPa or less. It only has to be about. Furthermore, the elastic modulus may be about 200 GPa or more and 220 GPa or less. In addition, in this specification, a thermal expansion coefficient shows the linear thermal expansion coefficient in 20-100 degreeC.
このような物性を満たし、特に好ましい裏面材としては、前述の冷延鋼板類のうち、塗装溶融５５％アルミニウム−亜鉛合金めっき鋼板等が挙げられる。 As a particularly preferable back material satisfying such physical properties, among the above-described cold-rolled steel plates, a coated molten 55% aluminum-zinc alloy plated steel plate and the like can be mentioned.
［表面材］
本発明の金属樹脂複合板の表面材は、難削材の金属板又は金属帯（以下「難削金属板」と称す場合がある。）である。この表面材は、硬質で意匠性且つ耐食性に優れた難削材の金属板で、好ましくは、裏面材に対して一定の熱膨張係数比にあり、降伏点又は耐力が大きく、弾性率が高い金属板である。
[Surface material]
The surface material of the metal resin composite plate of the present invention is a metal plate or a metal strip (hereinafter sometimes referred to as “hard-to-cut metal plate”) of a difficult-to-cut material. This surface material is a hard, hard-to-cut metal plate with excellent design and corrosion resistance, and preferably has a constant coefficient of thermal expansion relative to the back surface material, has a high yield point or yield strength, and a high elastic modulus. It is a metal plate.
以下に表面材の好適な物性について説明する。 Hereinafter, suitable physical properties of the surface material will be described.
(1) 被削性
表面材の難削金属板の被削性は、前述の被削性指数として８０以下、中でも６０以下であることが好ましい。一般に、金属材は、被削性が悪いものほど引張強度等の機械的強度が大きく、表面材の被削性指数が８０以下のものであれば、金属樹脂複合板としての強度、表面硬さ等を十分に確保することができる。表面材の被削性指数が過度に低いと、金属樹脂複合板としての切削加工性が著しく劣るものとなるため、３０以上程度であることが好ましい。表面材がこのような難削材であっても、好ましくは、裏面材の冷延鋼板類との熱膨張係数比を適性範囲に保ち、物理的、機械的性質が適性範囲内にあれば、切削加工性に優れた金属樹脂複合板を実現することができる。
(1) Machinability The machinability of the difficult-to-cut metal plate of the surface material is preferably 80 or less, particularly 60 or less as the machinability index. Generally, a metal material has a higher mechanical strength such as tensile strength as the machinability is worse, and if the machinability index of the surface material is 80 or less, the strength and surface hardness as a metal resin composite plate. Etc. can be secured sufficiently. When the machinability index of the surface material is excessively low, the machinability as the metal resin composite plate is remarkably inferior, and is preferably about 30 or more. Even if the surface material is such a difficult-to-cut material, preferably, the thermal expansion coefficient ratio with the cold-rolled steel sheets of the back surface material is kept in the appropriate range, and the physical and mechanical properties are in the appropriate range, A metal-resin composite plate having excellent cutting workability can be realized.
(2) 熱膨張係数比
表面材の難削金属板の熱膨張係数ＴＥａの裏面材の冷延鋼板類の熱膨張係数ＴＥｂに対する熱膨張係数比（ＴＥａ／ＴＥｂ）は通常０．７以上、特に０．８以上で、通常１．４以下、特に１．２以下であることが好ましい。この熱膨張係数比が上限を上回っても、下限を下回っても、表面材と裏面材との熱膨張差により、金属樹脂複合板において実用範囲を超える反りが発生するおそれがある。
(2) thermal expansion coefficient ratio to the thermal expansion coefficient TE b of cold-rolled steel sheet such a rear material thermal expansion coefficient TE a difficult to cut the metal plate in the thermal expansion coefficient ratio surface material (TE a / TE b) is generally 0. It is preferably 7 or more, particularly 0.8 or more, and usually 1.4 or less, particularly 1.2 or less. Even if this thermal expansion coefficient ratio exceeds the upper limit or falls below the lower limit, the metal resin composite plate may be warped beyond the practical range due to the difference in thermal expansion between the front surface material and the back surface material.
(3) 降伏点又は耐力
表面材の難削金属板の降伏点又は耐力は１６５ＭＰａ以上、特に２３０ＭＰａ以上であることが好ましい。降伏点又は耐力がこの下限を下回ると、金属樹脂複合板としての強度が低下し、補強のための余分なコストがかかることになる。表面材の降伏点又は耐力の上限としては通常４００ＭＰａ以下である。この上限を上回っても、金属樹脂複合板全体としての機械的強度の向上は認められない。
(3) Yield point or yield strength The yield point or yield strength of the difficult-to-cut metal plate of the surface material is preferably 165 MPa or more, particularly preferably 230 MPa or more. When the yield point or the proof stress is below this lower limit, the strength as the metal resin composite plate is lowered, and an extra cost for reinforcement is required. The upper limit of the yield point or yield strength of the surface material is usually 400 MPa or less. Even if it exceeds this upper limit, the improvement of the mechanical strength as the whole metal resin composite board is not recognized.
(4) 弾性率
表面材の難削金属板の弾性率は１００ＧＰａ以上、特に１１０ＧＰａ以上、とりわけ２００ＧＰａ以上で２２０ＧＰａ以下程度であることが好ましい。弾性率がこの下限を下回ると、荷重を受けたときの変形が大きく、補強のための余分なコストがかかり、上限を超えても金属樹脂複合板全体としての機械的強度は向上しない。
(4) Elastic modulus The elastic modulus of the hard-to-cut metal plate of the surface material is preferably 100 GPa or more, particularly 110 GPa or more, particularly 200 GPa or more and 220 GPa or less. If the elastic modulus is less than this lower limit, deformation when subjected to a load is large, extra cost for reinforcement is required, and even if the upper limit is exceeded, the mechanical strength of the metal resin composite plate as a whole is not improved.
本発明において、表面材として用いられる難削金属板は、好ましくは上述のような物性を満たすものであれば良く、特に制限はないが、耐食性が良く、意匠性に優れ、且つ難削材である理由から、ステンレス鋼が好適である。 In the present invention, the hard-to-cut metal plate used as the surface material is not particularly limited as long as it satisfies the physical properties as described above, and has good corrosion resistance, excellent design properties, and difficult-to-cut materials. For some reason, stainless steel is preferred.
ステンレス鋼の合金種としては、ＳＵＳ３１６（被削性指数４５、熱膨張係数１６．０×１０−６／℃、耐力２０５ＭＰａ以上、弾性率１９０ＧＰａ）、ＹＵＳ２２０Ｍ（被削性指数６１、熱膨張係数１０．４×１０−６／℃、耐力２９５ＭＰａ以上、弾性率２００ＧＰａ）などが例示される。 Stainless steel alloy types include SUS316 (Machinability Index 45, Thermal Expansion Coefficient 16.0 × 10 −6 / ° C., Yield 205 MPa and Elastic Modulus 190 GPa), YUS220M (Machinability Index 61, Thermal Expansion Coefficient 10 4 × 10 −6 / ° C., yield strength of 295 MPa or more, and elastic modulus of 200 GPa).
［樹脂シート］
本発明の金属樹脂複合板において、樹脂シートは、通常、不燃性無機物と、熱硬化性樹脂や熱可塑性樹脂、中でも不燃性無機物と熱可塑性樹脂、特に不燃性無機物と、ポリエチレン、ポリプロピレン等のポリオレフィン系樹脂、又はエチレン−酢酸ビニル共重合樹脂との混合物で構成されることが好適であるが、用途によって耐火性が要求されない場所への利用においては、不燃性無機物を含まないポリオレフィン系樹脂、エチレン−酢酸ビニル共重合樹脂、塩化ビニル系樹脂、フェノール系樹脂、ウレタン系樹脂等の各種樹脂よりなるものを用いることができる。
[Resin sheet]
In the metal resin composite plate of the present invention, the resin sheet is usually a non-combustible inorganic material, a thermosetting resin or a thermoplastic resin, especially a non-combustible inorganic material and a thermoplastic resin, particularly a non-combustible inorganic material, and a polyolefin such as polyethylene or polypropylene. It is preferable to be composed of a resin or a mixture with an ethylene-vinyl acetate copolymer resin, but for use in a place where fire resistance is not required depending on the application, a polyolefin resin that does not contain a nonflammable inorganic substance, ethylene -What consists of various resins, such as a vinyl acetate copolymer resin, a vinyl chloride resin, a phenol resin, and a urethane resin, can be used.
また、難燃性を付与するための不燃性無機物としては、マグネシウム、カルシウム、バリウム又はアルミニウム等の、酸化物、水酸化物、ケイ酸塩、炭酸塩又は硫酸塩などの不燃性無機物フィラーの１種又は２種以上を用いることができる。これらの不燃性無機物フィラーの樹脂シート中の含有量は、通常５０重量％以上、特に６０重量％以上で、通常９０重量％以下、特に８０重量％以下であることが好ましい。不燃性無機物フィラーの含有量が上記下限よりも少ないと、不燃性無機物フィラーを配合したことによる十分な難燃性を得ることができず、上記上限よりも多いと結着性が劣り、樹脂シートが脆くなる。 Moreover, as a nonflammable inorganic substance for imparting flame retardancy, 1 of nonflammable inorganic fillers such as oxides, hydroxides, silicates, carbonates or sulfates such as magnesium, calcium, barium or aluminum Species or two or more can be used. The content of these incombustible inorganic fillers in the resin sheet is usually 50% by weight or more, particularly 60% by weight or more, and usually 90% by weight or less, particularly preferably 80% by weight or less. If the content of the nonflammable inorganic filler is less than the above lower limit, sufficient flame retardancy due to the blending of the nonflammable inorganic filler cannot be obtained, and if it exceeds the upper limit, the binding property is inferior, and the resin sheet Becomes brittle.
なお、不燃性無機物フィラーは粒状、繊維状、フレーク状等の各種の形状を採用し得るが、難燃性は建築材料としての認定基準を常に満足することが必要なので、粒径、繊維長、繊維径などは注意深く選定することが大切である。 Incombustible inorganic fillers can adopt various shapes such as granular, fibrous, and flaky, but flame retardancy must always satisfy the certification standards for building materials, so the particle size, fiber length, It is important to carefully select the fiber diameter.
樹脂シートには、不燃性無機物フィラー及び樹脂の他、安定剤、着色剤、架橋剤、発泡剤、酸化防止剤、紫外線吸収剤等の各種の添加剤が含まれていても良い。 The resin sheet may contain various additives such as a stabilizer, a colorant, a crosslinking agent, a foaming agent, an antioxidant, and an ultraviolet absorber, in addition to the nonflammable inorganic filler and the resin.
また、樹脂シートは、その片面又は両面に後述の接着層としての接着性を有する薄い樹脂フィルムが積層されたものであっても良く、この樹脂フィルムにより、樹脂シートに対する表面材及び／又は裏面材の接着性を確保することができる。 In addition, the resin sheet may be one in which a thin resin film having adhesiveness as an adhesive layer to be described later is laminated on one side or both sides of the resin sheet. Can be secured.
この接着用樹脂フイルムとしては、芯材の樹脂シートと表面材の難削金属板及び裏面材の冷延鋼板類に親和性のある熱可塑性樹脂のフイルムが使用される。熱可塑性樹脂の具体例としては、エチレン・アクリル酸共重合体、エチレン・酢酸ビニル共重合体、エチレン・グリシジルアクリレート共重合体、エチレン・無水マレイン酸共重合体、ポリエチレンのアクリル酸グラフト共重合体、ポリエチレンの無水マレイン酸グラフト共重合体等が挙げられ、その厚さは通常３０〜５０μｍ程度である。 As the adhesive resin film, a thermoplastic resin film having an affinity for the core resin sheet, the hard-to-cut metal plate of the surface material, and the cold-rolled steel plates of the back material is used. Specific examples of thermoplastic resins include ethylene / acrylic acid copolymers, ethylene / vinyl acetate copolymers, ethylene / glycidyl acrylate copolymers, ethylene / maleic anhydride copolymers, and polyethylene acrylic acid graft copolymers. And a maleic anhydride graft copolymer of polyethylene, and the thickness thereof is usually about 30 to 50 μm.
なお、この接着用樹脂フィルムは、表面材及び裏面材の樹脂シート接着面側に積層接着して用いても良い。 In addition, you may use this adhesion | attachment resin film by carrying out lamination | stacking adhesion | attachment on the resin sheet adhesion surface side of a surface material and a back surface material.
芯材としての樹脂シートはまた、薄層樹脂シートを２以上、例えば２〜５層積層してなる積層シートであっても良い。 The resin sheet as the core material may also be a laminated sheet formed by laminating two or more thin layer resin sheets, for example, 2 to 5 layers.
［金属樹脂複合板］
（製造方法）
本発明の金属樹脂複合板は、上述のような表面材、樹脂シート及び裏面材の積層構造を有する。このような本発明の金属樹脂複合板は、常法に従って製造される。即ち、例えば、予め押出し成形等により製造された樹脂シートの両面に、必要に応じて脱脂、表面処理等を施した難削金属板の表面材と冷延鋼板類の裏面材とをそれぞれ接着層を介して積層し、この積層体を加熱加圧して一体に接着すれば良い。また、樹脂シートを熔融押出ししながら、その両面に表面材と裏面材とを重ね合わせて三者を一体化することもできる。いずれの場合においても、樹脂シートと表面材及び裏面材との接着方法としては、従来から知られている方法を制約なしに採用することができる。
[Metal resin composite plate]
(Production method)
The metal resin composite plate of the present invention has a laminated structure of the surface material, the resin sheet, and the back material as described above. Such a metal resin composite plate of the present invention is produced according to a conventional method. That is, for example, a surface material of a hard-to-cut metal plate and a back surface material of cold-rolled steel sheets, each of which is degreased and surface-treated as necessary, on both surfaces of a resin sheet that has been manufactured in advance by extrusion molding or the like. The laminated body may be bonded together by heating and pressing. Moreover, while melt-extruding a resin sheet, it is also possible to unify the three by superimposing a surface material and a back material on both sides. In any case, as a method for adhering the resin sheet to the front surface material and the back surface material, a conventionally known method can be employed without restriction.
（厚み）
本発明の金属樹脂複合板の総板厚は、通常０．５ｍｍ以上、特に０．７ｍｍ以上で、通常１０．０ｍｍ以下、特に５．０ｍｍ以下であることが好ましい。金属樹脂複合板の総板厚が薄過ぎると金属樹脂複合板に必要とされる機械的強度等を満足することができず、厚過ぎると薄肉軽量化の面で好ましくなく、商業的建築材料としてはコスト競争力がなくなる。
(Thickness)
The total thickness of the metal resin composite plate of the present invention is usually 0.5 mm or more, particularly 0.7 mm or more, and usually 10.0 mm or less, particularly 5.0 mm or less. If the total thickness of the metal-resin composite plate is too thin, the mechanical strength required for the metal-resin composite plate cannot be satisfied, and if it is too thick, it is not preferable in terms of reducing the thickness and weight, and as a commercial building material Loses its cost competitiveness.
また、金属樹脂複合板の総板厚に対する樹脂シートの厚さの割合は６０〜９０％である。金属樹脂複合板の総板厚に占める樹脂シートの厚さの割合を多くすることにより、その軽量性を犠牲にすることなく、剛性を高めることができるが、この割合が過度に大きいと、相対的に表面材及び裏面材の厚さが薄くなって、必要とされる耐食性、耐候性や機械的強度を満足することができなくなる。 Further, the ratio of the thickness of the resin sheet to the total thickness of the metal-resin composite plate Ru 60% to 90% der. By increasing the proportion of the thickness of the resin sheet in the total thickness of the metal-resin composite plate, the rigidity can be increased without sacrificing its lightness, but if this proportion is excessively large, In particular, the thickness of the front surface material and the back surface material becomes thin, and the required corrosion resistance, weather resistance and mechanical strength cannot be satisfied.
また、表面材の難削金属板と裏面材の冷延鋼板類の厚さはそれぞれ０．１ｍｍ以上、特に０．２ｍｍ以上で、１．０ｍｍ以下、特に０．８ｍｍ以下であることが好ましい。表面材及び裏面材の厚さが厚過ぎると重量が重くなり、軽量化が図れず、また、特に表面材の難削金属板の厚さが厚いと切削加工性が劣るものとなり、逆に薄過ぎると必要とされる強度や耐久性を満足し得なくなる。 The thicknesses of the hard-to-cut metal plate for the front material and the cold-rolled steel plates for the back material are each preferably 0.1 mm or more, particularly 0.2 mm or more, and 1.0 mm or less, particularly 0.8 mm or less. If the thickness of the surface material and the back material is too thick, the weight will be heavy and weight reduction will not be achieved. If it is too much, the required strength and durability cannot be satisfied.
また、表面材の難削金属板と裏面材の冷延鋼板類との厚さの比率は０．８〜１．２の範囲であることが好ましく、これらはほぼ同等の厚さであることが最も好ましい。表面材と冷延鋼板類との厚さが上記範囲外では、生産時に表面材と裏面材の張力バランスを保って平面性を維持するのが難しくなり、また金属樹脂複合板としての強度は、表面材と裏面材のいずれか弱い方で決まるので、他方の材料だけ厚くしても意味がない。 Moreover, it is preferable that the ratio of the thickness of the hard-to-cut metal plate of the front surface material and the cold-rolled steel plates of the back surface material is in the range of 0.8 to 1.2, and these are approximately the same thickness. Most preferred. If the thickness of the surface material and cold-rolled steel sheet is outside the above range, it will be difficult to maintain the flatness by maintaining the tension balance between the surface material and the back material during production, and the strength as a metal resin composite plate is Since the surface material and the back material are determined by the weaker one, it is meaningless to increase the thickness of the other material alone.
（加工性）
本発明の金属樹脂複合板は、被削性が良く、アルミニウム複合材に広く用いられているパネルソー等の加工機械で容易にＶ溝加工を行うことができる。前述の如く、金属樹脂複合板を建築物の外壁を構成するパネル等に加工する場合には、金属樹脂複合板を所定の大きさに切断した後、その裏面をＶ字型に切削して溝を形成し（Ｖ溝加工）、ついでこの溝に沿って折曲げてトレー状のパネルとする。Ｖ溝加工には、パネルソーの他、ランニングソーや昇降盤などの据え置きタイプの丸鋸盤や、溝切りカッター、ミーリングマシン等手動式の加工機械を使用することができる。このような機械は現在アルミニウム複合材のＶ溝加工に広く用いられているが、このように汎用性の高い加工機械を本発明の金属樹脂複合板にもそのまま転用できることは、工業的価値が極めて高い。
(Processability)
The metal-resin composite plate of the present invention has good machinability and can be easily V-grooved with a processing machine such as a panel saw widely used for aluminum composite materials. As described above, when a metal resin composite plate is processed into a panel or the like constituting the outer wall of a building, the metal resin composite plate is cut into a predetermined size, and then the back surface is cut into a V shape to form a groove. (V groove processing), and then bent along this groove to form a tray-like panel. For the V-groove machining, a stationary type circular saw machine such as a running saw or an elevator board, a manual machining machine such as a grooving cutter or a milling machine can be used in addition to a panel saw. Such machines are currently widely used for V-groove machining of aluminum composite materials, but the fact that such highly versatile processing machines can be used as they are for the metal-resin composite plate of the present invention is extremely industrially valuable. high.
なお、パネルソーは、本来木工用の加工機械であった。その機械をベースに、世界のパネルソーメーカー数社がアルミニウム複合板の加工に適応できるように改良し、アルミニウム複合板用の加工機械として販売されている。パネルソーは安価で、生産性が高く、十分な精度を持ち、現在世界を通じてアルミニウム複合板のＶ溝加工の加工機械の主流となっている。パネルソーは、ほぼ垂直の加工テーブルを持つ丸鋸盤で、丸鋸の替わりに、Ｖ溝の刃を持つ円盤状のカッターを取りつけたものである。 The panel saw was originally a woodworking processing machine. Based on this machine, several panel saw manufacturers around the world have improved it so that it can be applied to the machining of aluminum composite plates, and are sold as processing machines for aluminum composite plates. Panel saws are inexpensive, highly productive, have sufficient accuracy, and are currently the mainstream of V-groove processing machines for aluminum composite plates throughout the world. The panel saw is a circular saw machine having a substantially vertical processing table, and a disc-shaped cutter having a V-groove blade is attached in place of the circular saw.
パネルソーのＶ溝の刃には切削用のチップが取りつけられ、このチップの形状設計で適正なＶ溝を切削する。チップの材質は一般に用いられる超硬合金でも良いが、超硬合金にＴｉＮなどのセラミックコーティングをしたものの方が寿命が長く、特に好ましい。即ち、本発明で裏面材に用いる冷延鋼板類の被削性はアルミニウム合金よりも著しく悪いが、このような切削用チップであれば、アルミニウム複合板に使用されている多くのパネルソーをそのまま使用してＶ溝加工を行うことができる。 Cutting tips are attached to the blades of the V-grooves of the panel saw, and appropriate V-grooves are cut by the shape design of these tips. The chip material may be a commonly used cemented carbide, but a cemented carbide with a ceramic coating such as TiN has a longer life and is particularly preferable. That is, the machinability of the cold-rolled steel sheets used for the back material in the present invention is remarkably worse than that of an aluminum alloy. However, with such cutting tips, many panel saws used for aluminum composite plates are used as they are. Thus, V-groove processing can be performed.
なお、本発明の金属樹脂複合板においては、少なくとも一方の金属板表面、特に表面材の難削金属板表面に、意匠性、耐食性の維持、向上の面から、有機系塗料による塗膜を形成しても良い。ここでの有機系塗料としては、フッ素系樹脂、アクリル系樹脂、ポリエステル系樹脂、ポリウレタン系樹脂などが挙げられるが、特にフッ素系樹脂が好ましい。この塗膜の厚みは、塗料種や塗装色によっても異なるが、通常２０μｍ以上、例えば２５〜５０μｍの範囲である。 In addition, in the metal resin composite plate of the present invention, a coating film made of an organic paint is formed on at least one metal plate surface, particularly the hard-to-cut metal plate surface of the surface material, from the standpoint of maintaining and improving design properties and corrosion resistance. You may do it. Examples of the organic paint here include fluorine resins, acrylic resins, polyester resins, polyurethane resins, and the like, and fluorine resins are particularly preferable. The thickness of the coating film is usually 20 μm or more, for example, in the range of 25 to 50 μm, although it varies depending on the coating type and coating color.
以下に実施例及び比較例を挙げて本発明を更に具体的に説明するが、本発明はその要旨を超えない限り、以下の実施例に限定されるものではない。 EXAMPLES The present invention will be described more specifically with reference to the following examples and comparative examples. However, the present invention is not limited to the following examples unless it exceeds the gist.
なお、表面材及び裏面材としては、以下の表２に示す金属板（いずれも厚さ０．３ｍｍで、表面仕上げが、光沢が低く建材に一般に用いられるダル仕上げの、幅１０２０ｍｍのもの）のコイルを用いた。これらの金属板は水洗後、脱脂液浸漬により金属板圧延時に表面に付着した油脂を取り除き、再び湯洗した後乾燥し、次いで、樹脂シートとの接着面側を塗布型のクロム酸クロム溶液により表面処理（クロム換算で約５０ｍｇ／ｍ２）し、この面に接着用樹脂フィルムを、熱ロールを用いて２００℃で熱接着して用いた。この接着用樹脂フィルムとしては、厚さ４０μｍのエチレン・アクリル酸共重合体フィルムを用いた。 In addition, as a surface material and a back surface material, the metal plates shown in the following Table 2 (both having a thickness of 0.3 mm, a surface finish having a low gloss and a dull finish generally used for building materials having a width of 1020 mm) A coil was used. After these metal plates are washed with water, the oil and fat adhering to the surface during rolling of the metal plate is removed by immersion in a degreasing solution, washed again with hot water and dried, and then the adhesive surface side with the resin sheet is coated with a coating type chromium chromate solution. A surface treatment (about 50 mg / m 2 in terms of chromium) was performed, and an adhesive resin film was thermally bonded to this surface at 200 ° C. using a heat roll. As the adhesive resin film, an ethylene / acrylic acid copolymer film having a thickness of 40 μm was used.
また、樹脂シート材料としては、低密度ポリエチレンＬＦ５４２Ｍ（三菱化学社製）と、粒度を調整した水酸化アルミニウム（アルコア社製）とを、樹脂シート中の水酸化アルミニウム含有量が７０重量％となるように用いた。 In addition, as the resin sheet material, low density polyethylene LF542M (manufactured by Mitsubishi Chemical Corporation) and aluminum hydroxide with a particle size adjusted (manufactured by Alcoa), the aluminum hydroxide content in the resin sheet is 70% by weight. Used as follows.
実施例１，２、比較例１〜４
表面材及び裏面材として表３に示す金属板を用いて、以下の方法により金属樹脂複合板を製造した。
Examples 1 and 2 and Comparative Examples 1 to 4
Using the metal plate shown in Table 3 as the front material and the back material, a metal resin composite plate was produced by the following method.
原料供給フィーダーを用いて、低密度ポリエチレンと水酸化アルミニウムを所定の割合で二軸混練機に供給し、押出機で溶融混練して厚さ３．４ｍｍのシート状に押出した。次いで、得られた樹脂シートの両面に、表面材及び裏面材の金属板コイルをそれぞれ配し、表面温度を１８０℃に設定した圧着接合ロールを用いて圧着し、総厚さ４ｍｍの金属樹脂複合板を製造した。 Using a raw material supply feeder, low density polyethylene and aluminum hydroxide were supplied to a biaxial kneader at a predetermined ratio, melted and kneaded by an extruder, and extruded into a sheet having a thickness of 3.4 mm. Next, the metal sheet coils of the surface material and the back surface material are arranged on both surfaces of the obtained resin sheet, and are crimped by using a crimping bonding roll whose surface temperature is set to 180 ° C., and a metal resin composite having a total thickness of 4 mm. A board was produced.
得られた金属樹脂複合板について、以下の評価試験を行い、結果を表３に示した。
１）変形量試験
上記で製造した金属樹脂複合板を１０００×１０００ｍｍの寸法にシャー切断機を用いて切断し、変形量測定用の試料とした。この試料を１０℃に温度制御されている室内に４時間以上保持した後、その変形量（初期変形量）を測定した。次いで、室温を６０℃に昇温させ、この温度で同じく４時間以上保持した後その変形量（温度上昇後の変形量）を測定した。温度上昇後の変形量から初期変形量を差引いた値を表３に「変形量」として示した。
The obtained metal resin composite plate was subjected to the following evaluation tests, and the results are shown in Table 3.
1) Deformation amount test The metal-resin composite plate produced above was cut into a size of 1000 x 1000 mm using a shear cutter to obtain a sample for measuring the deformation amount. After holding this sample in a room whose temperature was controlled at 10 ° C. for 4 hours or more, its deformation amount (initial deformation amount) was measured. Next, the temperature of the room temperature was raised to 60 ° C., and the amount of deformation (the amount of deformation after the temperature increase) was measured after maintaining the same temperature for 4 hours or more. A value obtained by subtracting the initial deformation amount from the deformation amount after the temperature rise is shown as “deformation amount” in Table 3.
一般に建材板としての変形許容量は５ｍｍ／ｍ以下、好ましくは３ｍｍ／ｍ以下とされている。基準を満たし実用可のものを○、変形量が多く実用不可であるものを×とした。 Generally, the allowable deformation amount as a building material plate is 5 mm / m or less, preferably 3 mm / m or less. A sample satisfying the standard and acceptable for practical use was indicated by ○, and a material having a large amount of deformation and impractical for use was indicated by ×.
２）Ｖ溝加工試験
以下の運転条件でパネルソーによるＶ溝加工を行った。
切削チップ：ＷＣにセラミックコーテイングしたもの
回転数 ：４８００ｒｐｍ
送り速度 ：１０ｍ／ｍｉｎ
2) V-groove machining test V-groove machining with a panel saw was performed under the following operating conditions.
Cutting tip: Ceramic coated WC Rotational speed: 4800 rpm
Feeding speed: 10m / min
Ｖ溝形状は図１に示す通りである。図１中、１は金属樹脂複合板、２は表面材、３は樹脂シート、４は裏面材、５はＶ溝である。 The V groove shape is as shown in FIG. In FIG. 1, 1 is a metal resin composite plate, 2 is a surface material, 3 is a resin sheet, 4 is a back material, and 5 is a V-groove.
このようなＶ溝加工で刃が摩耗すると、Ｖ溝のバリが大きくなり始め、正確なＶ溝形状が得られないだけではなく、最終的には異常な音と熱を発し、運転ができなくなる。このような問題がなく、良好な切削加工性を示し、実用可能なものを○、切削開始後１０分間以内の短時間に刃が摩耗し、実用上切削不可のものを×とした。 When the blade is worn in such V-groove processing, the burr of the V-groove begins to increase, and not only an accurate V-groove shape cannot be obtained, but finally an abnormal sound and heat are emitted, and operation becomes impossible. . There was no such problem, and good cutting workability was exhibited, and those that could be practically used were evaluated as ◯, and those that were worn out in a short time within 10 minutes after the start of cutting and that could not be practically cut were evaluated as ×.
表３の結果から、次のことが分かる。
被削性が悪いステンレス鋼板ＳＵＳ４３０を裏面材に用い、難削材であるステンレス鋼板ＹＵＳ２２０Ｍを表面材に用いた金属樹脂複合板（比較例１）は、熱膨張による変形は実用上問題ないが、パネルソーでＶ溝加工はできない。表面材として難削材であるステンレス鋼板ＳＵＳ３１６を用いた場合（比較例２）も同様の結果である。
From the results in Table 3, the following can be understood.
A metal resin composite plate (Comparative Example 1) using a stainless steel plate SUS430 having poor machinability as a back surface material and a stainless steel plate YUS220M which is a difficult-to-cut material as a surface material has no practical problem with deformation due to thermal expansion. V-groove machining is not possible with a panel saw. The same result is obtained when the stainless steel plate SUS316, which is a difficult-to-cut material, is used as the surface material (Comparative Example 2).
一方、被削性が良いアルミニウム合金板１１００を裏面材に、ステンレス鋼板ＹＵＳ２２０Ｍを表面材に用いた金属樹脂複合板（比較例３）では、パネルソーでＶ溝加工はできるが、熱膨張による変形が大きく、建材板としての許容量を超える。表面材としてステンレス鋼板ＳＵＳ３１６を用いた場合（比較例４）も同様の結果である。 On the other hand, in the metal resin composite plate (Comparative Example 3) using the aluminum alloy plate 1100 with good machinability as the back material and the stainless steel plate YUS220M as the surface material, V-groove processing can be performed with a panel saw, but deformation due to thermal expansion is possible. Large, exceeding the allowable amount of building material board. The same result is obtained when stainless steel plate SUS316 is used as the surface material (Comparative Example 4).
これに対して、裏面材として溶融亜鉛めっき鋼板を用い、表面材としてステンレス鋼板ＹＵＳ２２０Ｍ又はステンレス鋼板ＳＵＳ３１６を用いた金属樹脂複合板（実施例１，２）では、パネルソーでＶ溝加工ができ、且つ熱膨張による変形量も実用上問題ない。 On the other hand, in the metal resin composite plate (Examples 1 and 2) using the hot dip galvanized steel plate as the back material and the stainless steel plate YUS220M or the stainless steel plate SUS316 as the surface material, V-groove processing can be performed with a panel saw, and There is no practical problem with the amount of deformation due to thermal expansion.
１ 金属樹脂複合板
２ 表面材
３ 樹脂シート
４ 裏面材
５ Ｖ溝
DESCRIPTION OF SYMBOLS 1 Metal resin composite board 2 Surface material 3 Resin sheet 4 Back surface material 5 V groove
Claims (4)
該表面材は、該裏面材に対する熱膨張係数比が０．７〜１．４であり、降伏点又は耐力が１６５ＭＰａ以上で弾性率が１００ＧＰａ以上であり、該表面材の被削性指数が８０以下で、該裏面材の被削性指数が８０より大であり、
該樹脂シートの厚さが、該複合板の総板厚の６０〜９０％であることを特徴とする金属樹脂複合板。 A resin sheet, a surface material made of a difficult-to-cut metal plate joined to one surface of the resin sheet, and a cold rolled steel sheet and a cold rolled steel strip joined to the other surface of the resin sheet and their surface treated products (hereinafter referred to as "cold-rolled flat products") Ri Na and a rear material selected from the group consisting of,
The surface material has a thermal expansion coefficient ratio of 0.7 to 1.4 with respect to the back surface material, a yield point or a proof stress of 165 MPa or more, an elastic modulus of 100 GPa or more, and a machinability index of the surface material of 80. Below, the machinability index of the back material is greater than 80,
The thickness of the resin sheet, a metal resin composite plate, wherein 60% to 90% der Rukoto of the total thickness of the plurality plywood.
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5027750A (en) * | 1973-07-13 | 1975-03-22 | ||
| JPH0911394A (en) * | 1995-06-29 | 1997-01-14 | Mitsubishi Chem Corp | Metal-resin composite panel |
| JPH09314734A (en) * | 1996-05-29 | 1997-12-09 | Mitsubishi Chem Corp | Flame retardant metal resin composite plate |
| JP2004074606A (en) * | 2002-08-20 | 2004-03-11 | Mitsubishi Kagaku Sanshi Corp | Composite metallic resin sheet with low staining properties and its manufacturing method |
| JP2004255637A (en) * | 2003-02-25 | 2004-09-16 | Jfe Steel Kk | Laminated steel sheet |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5027750A (en) * | 1973-07-13 | 1975-03-22 | ||
| JPH0911394A (en) * | 1995-06-29 | 1997-01-14 | Mitsubishi Chem Corp | Metal-resin composite panel |
| JPH09314734A (en) * | 1996-05-29 | 1997-12-09 | Mitsubishi Chem Corp | Flame retardant metal resin composite plate |
| JP2004074606A (en) * | 2002-08-20 | 2004-03-11 | Mitsubishi Kagaku Sanshi Corp | Composite metallic resin sheet with low staining properties and its manufacturing method |
| JP2004255637A (en) * | 2003-02-25 | 2004-09-16 | Jfe Steel Kk | Laminated steel sheet |
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