JP2016113676A - Method for manufacturing housing having chemical conversion coating, housing having chemical conversion coating and tool for holding housing - Google Patents
Method for manufacturing housing having chemical conversion coating, housing having chemical conversion coating and tool for holding housing Download PDFInfo
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Abstract
Description
本発明は、化成皮膜を有する筐体の製造方法、化成皮膜を有する筐体、筐体保持治具に関する。 The present invention relates to a method for manufacturing a casing having a chemical conversion film, a casing having a chemical conversion film, and a casing holding jig.
マグネシウム合金は、比強度が高く比重が軽いため、例えば携帯端末やＰＣの筐体の材料として使用すると、従来の樹脂やアルミニウムと比べ、軽量・高強度な筐体となる。
なお、アルミ部品の表面に化成処理を施す技術、あるいは、マグネシウム合金の表面に硫酸又は硝酸で化成処理した後、フッ素系化合物を有機溶剤に溶解した塗料に浸し、加熱して熱硬化させて、含フッ素撥水皮膜を塗装する技術などがある。
Since the magnesium alloy has a high specific strength and a low specific gravity, for example, when it is used as a material for a portable terminal or a PC case, it becomes a lighter and higher strength case than conventional resins and aluminum.
In addition, after the chemical conversion treatment on the surface of the aluminum part, or the chemical conversion treatment with sulfuric acid or nitric acid on the surface of the magnesium alloy, the fluorine-based compound is immersed in a paint dissolved in an organic solvent, heated and thermally cured, There is a technique to paint a fluorine-containing water repellent film.
ところで、マグネシウム合金を筐体の材料として用いる場合、マグネシウム合金は、他の金属材料や樹脂材料と比べると耐蝕性が低いため、化成処理や陽極酸化によって耐蝕性の高い皮膜を筐体の表面に形成することになる。
また、例えば携帯端末やＰＣなどでは、筐体にアース性を持たせるため、筐体の表面側を、耐蝕性及び塗装性に優れたものとする一方、筐体の裏面側を、導通性を有するものとする必要がある。
By the way, when a magnesium alloy is used as a housing material, the magnesium alloy has a low corrosion resistance compared to other metal materials and resin materials. Therefore, a highly corrosion-resistant film is formed on the surface of the housing by chemical conversion treatment or anodization. Will form.
For example, in a portable terminal or a PC, the front side of the casing is excellent in corrosion resistance and paintability so that the casing is grounded, while the back side of the casing is made conductive. It is necessary to have.
ここで、耐蝕性及び塗装性に優れたものとするには、厚膜の化成皮膜を形成すれば良い。しかしながら、厚膜の化成皮膜は、絶縁体となるため、導通性を有するものとすることができない。
このため、筐体の表面及び裏面の両面に厚膜の化成皮膜を形成すると、筐体の表面側を、耐蝕性及び塗装性に優れたものとすることはできるが、筐体の裏面側を、導通性を有するものとすることはできない。
Here, in order to achieve excellent corrosion resistance and paintability, a thick chemical film may be formed. However, since the thick chemical conversion film becomes an insulator, it cannot have electrical conductivity.
For this reason, if a thick chemical conversion film is formed on both the front and back surfaces of the housing, the front surface side of the housing can be made excellent in corrosion resistance and paintability. It cannot be made conductive.
また、化成皮膜は膜厚によって抵抗値が変化し、薄膜にすることで導通性を有するものとすることが可能である。但し、薄膜の化成皮膜は、耐蝕性及び塗装性が乏しい。
このため、筐体の表面及び裏面の両面に薄膜の化成皮膜を形成すると、筐体の裏面側を、導通性を有するものとすることができるが、筐体の表面側を、耐蝕性及び塗装性に優れたものとすることはできない。
In addition, the chemical conversion film has a resistance value that varies depending on the film thickness, and can be made conductive by forming a thin film. However, a thin chemical film has poor corrosion resistance and paintability.
For this reason, when a thin film of chemical conversion film is formed on both the front and back surfaces of the housing, the back surface side of the housing can be made conductive, but the front surface side of the housing is coated with corrosion resistance and paint. It cannot be made excellent.
そこで、耐蝕性及び塗装性を優先し、筐体の表面及び裏面の両面に厚膜の化成皮膜を形成した後、筐体の裏面に対して導通性を確保するための加工を施すことが考えられる。ここで、筐体の裏面に導通性を確保するための加工としては、例えば、裏面のアースをとる部分の化成皮膜をレーザ剥離し、導電性テープを貼り付けて導通をとったり、あるいは、ネジで締め込んで接点部分の導通をとったりすることなどが考えられる。 Therefore, giving priority to corrosion resistance and paintability, after forming a thick chemical film on both the front and back surfaces of the housing, it may be possible to process the back surface of the housing to ensure electrical conductivity. It is done. Here, as a process for ensuring conductivity on the back surface of the housing, for example, the chemical film on the back surface of the grounding part is laser-separated, and a conductive tape is applied to make the conductivity, or a screw is used. It is conceivable that the contact portion is made conductive by tightening.
しかしながら、この方法では、化成皮膜を形成した後に、筐体の裏面に対して導通性を確保するための加工を施すことが必要になるため、コストや手間がかかり、また、加工した部分から腐食が発生するおそれもある。例えば、レーザ剥離はコストがかかり、導電性テープの貼り付けは手間がかかる上に将来的に剥がれてアース不良になるおそれもある。また、筐体の裏面に対して導通性を確保するための加工では、化成皮膜の一部を剥がすことになるため、将来的にその部分から腐食が発生するおそれがある。 However, in this method, after forming the chemical conversion film, it is necessary to perform processing to ensure conductivity on the back surface of the housing, which is costly and troublesome, and the processed portion is corroded. May occur. For example, laser peeling is costly, and attaching a conductive tape is troublesome and may peel off in the future, resulting in poor grounding. Further, in the processing for ensuring conductivity with respect to the back surface of the housing, a part of the chemical conversion film is peeled off, and there is a possibility that corrosion will occur from that part in the future.
そこで、化成皮膜を形成した後に、筐体の裏面に対して導通性を確保するための加工を施さなくても、筐体の表面側を、耐蝕性及び塗装性に優れたものとし、筐体の裏面側を、導通性を有するものとすることができるようにしたい。 Therefore, after forming the chemical conversion film, the surface side of the housing is made excellent in corrosion resistance and paintability without performing processing for ensuring conductivity on the back surface of the housing. I want to make it possible to have conductivity on the back side.
本化成皮膜を有する筐体の製造方法は、マグネシウム合金製の筐体の表面を少なくとも活性化処理用フッ化物系薬液で活性化処理し、筐体の裏面を活性化処理用酸系薬液で活性化処理し、筐体の表面及び裏面の両面を化成皮膜処理用フッ化物系薬液で化成皮膜処理し、筐体の表面及び裏面に少なくとも厚さの異なる化成皮膜を有する筐体を製造する。
本化成皮膜を有する筐体は、マグネシウム合金製の筐体であって、筐体の表面及び裏面に少なくとも厚さの異なる化成皮膜を有する。
The manufacturing method of the housing having the chemical conversion film is such that the surface of the housing made of magnesium alloy is activated with at least a fluoride chemical solution for activation treatment, and the back surface of the housing is activated with an acid chemical solution for activation treatment. Then, the front and back surfaces of the casing are both subjected to a chemical conversion coating treatment with a fluoride chemical solution for chemical conversion coating to manufacture a casing having a chemical conversion coating having at least different thicknesses on the front and rear surfaces of the casing.
The housing | casing which has this chemical conversion film is a housing | casing made from a magnesium alloy, Comprising: It has a chemical conversion film from which thickness differs at least on the surface and the back surface of a housing | casing.
本筐体保持治具は、枠状部材と、枠状部材に取り付けられた布状部材と、筐体の表面が布状部材で覆われた状態で筐体を保持する保持部材とを備える。 The case holding jig includes a frame-like member, a cloth-like member attached to the frame-like member, and a holding member that holds the case in a state where the surface of the case is covered with the cloth-like member.
したがって、本化成皮膜を有する筐体の製造方法によれば、化成皮膜を形成した後に、筐体の裏面に対して導通性を確保するための加工を施さなくても、筐体の表面側を、耐蝕性及び塗装性に優れたものとし、筐体の裏面側を、導通性を有するものとすることができるという利点がある。また、筐体の裏面に対して導通性を確保するための加工を施さなくても良いため、導通性を確保するための加工を施した部分から腐食が発生するおそれがない、化成皮膜を有する筐体を実現することができるという利点がある。また、本筐体保持治具を用いることで、確実に、筐体の表面側を、耐蝕性及び塗装性に優れたものとし、筐体の裏面側を、導通性を有するものとすることができるという利点がある。 Therefore, according to the manufacturing method of the housing having the chemical conversion film, the surface side of the housing is not subjected to processing for ensuring conductivity on the back surface of the housing after the chemical film is formed. There is an advantage that it is excellent in corrosion resistance and paintability, and the back side of the housing can be conductive. Moreover, since it is not necessary to perform the process for ensuring the electrical conductivity on the back surface of the housing, it has a chemical conversion film that does not cause corrosion from the part subjected to the process for ensuring the electrical conductivity. There is an advantage that a housing can be realized. In addition, by using the case holding jig, the front side of the case is surely excellent in corrosion resistance and paintability, and the back side of the case is made conductive. There is an advantage that you can.
以下、図面により、本発明の実施の形態にかかる化成皮膜を有する筐体の製造方法、化成皮膜を有する筐体、筐体保持治具について、図１〜図７を参照しながら説明する。
本実施形態の化成皮膜を有する筐体の製造方法は、マグネシウム合金製の筐体の表面に、化成処理を施して、化成皮膜を形成して、化成皮膜を有する筐体を製造する方法である。このため、本実施形態の化成皮膜を有する筐体の製造方法は、マグネシウム合金製の筐体の表面に化成処理を施す化成処理プロセスを含む。なお、この化成処理プロセスは、マグネシウム合金に対する化成処理プロセスであるため、マグネシウム合金向け化成処理プロセスともいう。また、ここでは、筐体は、例えば携帯端末やＰＣ向けの筐体である。
Hereinafter, a manufacturing method of a case having a chemical conversion film, a case having a chemical conversion film, and a case holding jig according to an embodiment of the present invention will be described with reference to FIGS.
The manufacturing method of the housing | casing which has a chemical conversion film of this embodiment is a method of manufacturing the housing | casing which has a chemical conversion film by performing chemical conversion treatment on the surface of the housing | casing made from a magnesium alloy, and forming a chemical conversion film. . For this reason, the manufacturing method of the housing | casing which has a chemical conversion film of this embodiment includes the chemical conversion treatment process which performs a chemical conversion treatment on the surface of the housing | casing made from a magnesium alloy. In addition, since this chemical conversion treatment process is a chemical conversion treatment process with respect to a magnesium alloy, it is also called a chemical conversion treatment process for a magnesium alloy. Here, the case is a case for a mobile terminal or a PC, for example.
本実施形態にかかる化成処理プロセスは、図１に示すように、脱脂処理、活性化処理、デスマット処理、化成皮膜処理を含む。つまり、化成処理工程は、脱脂処理工程、活性化処理工程、デスマット処理工程、化成皮膜処理工程を含む。
特に、本実施形態では、マグネシウム合金製の筐体の表面は、耐蝕性（耐食性）及び塗装性（塗装密着性）を優先した化成皮膜を形成する必要がある筐体の外面であり、筐体の裏面は導通性を優先した化成皮膜を形成する必要がある筐体の内面である。
As shown in FIG. 1, the chemical conversion treatment process according to the present embodiment includes a degreasing treatment, an activation treatment, a desmut treatment, and a chemical conversion film treatment. That is, the chemical conversion treatment step includes a degreasing treatment step, an activation treatment step, a desmut treatment step, and a chemical conversion film treatment step.
In particular, in the present embodiment, the surface of the magnesium alloy casing is the outer surface of the casing where it is necessary to form a chemical conversion film that prioritizes corrosion resistance (corrosion resistance) and paintability (paint adhesion). The back surface is the inner surface of the casing where it is necessary to form a chemical conversion film giving priority to electrical conductivity.
このため、マグネシウム合金製の筐体の表面（外面）に、耐蝕性及び塗装性に優れた厚膜の化成皮膜を形成し、筐体の裏面（内面）に、導通性に優れた薄膜の化成皮膜を形成すべく、活性化処理及び化成皮膜処理を、以下のように行なうようにしている。
つまり、本実施形態では、活性化処理において、マグネシウム合金製の筐体の表面を少なくとも活性化処理用フッ化物系薬液で活性化処理し、筐体の裏面を活性化処理用酸系薬液（例えば活性化処理用硝酸系薬液）で活性化処理する。なお、薬液を薬剤ともいう。
For this reason, a thick-film chemical film with excellent corrosion resistance and paintability is formed on the surface (outer surface) of the magnesium alloy housing, and a thin film with excellent electrical conductivity is formed on the back surface (inner surface) of the housing. In order to form a film, the activation process and the chemical conversion film process are performed as follows.
That is, in the present embodiment, in the activation treatment, at least the surface of the magnesium alloy casing is activated with the fluoride chemical solution for activation treatment, and the acid chemical solution for activation treatment (for example, Activation treatment with nitric acid chemical solution for activation treatment). A chemical solution is also called a drug.
そして、化成皮膜処理において、筐体の表面及び裏面の両面を化成皮膜処理用フッ化物系薬液で化成皮膜処理し、筐体の表面及び裏面に少なくとも厚さの異なる化成皮膜を有する筐体を製造する。このようにして製造された化成皮膜を有する筐体は、マグネシウム合金製の筐体であって、筐体の表面及び裏面に少なくとも厚さの異なる化成皮膜を有するものとなる。 Then, in the chemical film treatment, both the front surface and the back surface of the housing are chemically coated with a fluoride chemical solution for chemical film treatment, and a housing having a chemical film of at least different thickness on the front and back surfaces of the housing is manufactured. To do. The casing having the chemical conversion film thus manufactured is a magnesium alloy casing, and has a chemical conversion film having at least different thicknesses on the front and back surfaces of the casing.
この場合、化成皮膜処理において用いられる化成皮膜処理用フッ化物系薬液として、マグネシウム合金（Ｍｇ合金）の表面上にフッ化物を含む皮膜がある場合とない場合とで異なる厚さ及び性質を有する化成皮膜を形成できる薬液（例えばミリオン化学製のＭｇ−Ｌｉ合金用の化成皮膜処理用薬液）を用いれば良い。
そして、化成皮膜処理の前に行なわれる活性化処理において、活性化処理用フッ化物系薬液を用いて、筐体を構成するマグネシウム合金の表面上にフッ化物を含む皮膜を形成しておけば良い。ここで、活性化処理用フッ化物系薬液としては、例えば、フッ化物として酸性フッ化ナトリウムやフッ酸を含有する薬液（フッ化物を含有する薬液）を用いれば良い。
In this case, as the chemical film for fluoride film treatment used in the chemical film treatment, a chemical film having different thicknesses and properties depending on whether or not there is a film containing fluoride on the surface of the magnesium alloy (Mg alloy). What is necessary is just to use the chemical | medical solution which can form a membrane | film | coat (For example, the chemical solution for chemical film treatment for Mg-Li alloys by Million Chemical).
And in the activation process performed before a chemical conversion film process, the film | membrane containing a fluoride should just be formed on the surface of the magnesium alloy which comprises a housing | casing using the fluoride type chemical | medical solution for activation processes. . Here, as the fluoride-type chemical solution for activation treatment, for example, a chemical solution containing sodium acid fluoride or hydrofluoric acid as the fluoride (chemical solution containing fluoride) may be used.
本実施形態では、筐体の表面に対して活性化処理用フッ化物系薬液を用いて活性化処理を行なって筐体の表面にフッ化物を含む皮膜（下地膜）を形成しておき、これに、上述の化成皮膜処理用フッ化物系薬液を用いて化成皮膜処理を行なうことで、活性化処理で形成されたフッ化物を核に厚膜の化成皮膜が形成されることになる。
一方、筐体の裏面に対しては活性化処理用酸系薬液（例えば活性化処理用硝酸系薬液）を用いて活性化処理を行なって、筐体の裏面に正常なマグネシウム合金を露出させることで、即ち、筐体の裏面を構成するマグネシウム合金上の酸化膜を取り除き、スマットができないようにする。このように、フッ化物を含まない活性化処理用薬液を用いて活性化処理を行なった筐体の裏面に、上述の化成皮膜処理用フッ化物系薬液を用いて化成皮膜処理を行なうと、薄膜の化成皮膜（ここでは透明皮膜）が形成されることになる。
In the present embodiment, the surface of the housing is activated using a fluoride chemical solution for activation treatment to form a film (underlayer film) containing fluoride on the surface of the housing. In addition, by performing the chemical conversion film treatment using the above-described fluoride chemical solution for chemical conversion film treatment, a thick chemical conversion film is formed using the fluoride formed by the activation treatment as a nucleus.
On the other hand, activation treatment is performed on the rear surface of the housing using an acid chemical solution for activation treatment (for example, nitric acid chemical solution for activation treatment) to expose a normal magnesium alloy on the rear surface of the housing. That is, the oxide film on the magnesium alloy constituting the back surface of the casing is removed to prevent smut. In this way, when the chemical film treatment is performed on the back surface of the casing that has been activated using the chemical liquid for activation treatment that does not contain fluoride, using the fluoride chemical liquid for chemical film treatment described above, a thin film is obtained. The chemical conversion film (here, a transparent film) is formed.
この場合、化成皮膜処理では、筐体の表面及び裏面の両面に対して、同じ薬液を用いて処理を行なえば良い。なお、化成処理プロセスのその他の処理、即ち、脱脂処理、デスマット処理でも、筐体の表面及び裏面の両面に対して、同じ薬液（例えばアルカリ系薬液）を用いて処理を行なえば良い。
このようにして、筐体の表面及び裏面に少なくとも厚さの異なる化成皮膜（異なる種類の化成皮膜）を同時に形成することができる。つまり、マグネシウム合金製の筐体の表面に、耐蝕性及び塗装性に優れた厚膜の化成皮膜を形成し、筐体の裏面に、導通性に優れた薄膜の化成皮膜を形成することができる。
In this case, in the chemical conversion film treatment, the same chemical solution may be used for both the front and back surfaces of the housing. In the other processes of the chemical conversion treatment process, that is, degreasing treatment and desmutting treatment, the same chemical solution (for example, alkaline chemical solution) may be used for both the front and back surfaces of the housing.
In this manner, chemical conversion films (different types of chemical conversion films) having at least different thicknesses can be simultaneously formed on the front and back surfaces of the housing. That is, a thick chemical conversion film excellent in corrosion resistance and paintability can be formed on the surface of the magnesium alloy casing, and a thin chemical conversion film excellent in conductivity can be formed on the rear surface of the casing. .
具体的には、本実施形態にかかる化成処理プロセスは、以下のように行なわれる。
まず、マグネシウム合金製の筐体の表面及び裏面の両面を、脱脂処理用アルカリ系薬液で脱脂処理する。
次に、マグネシウム合金製の筐体の表面を、活性化処理用フッ化物系薬液で活性化処理し、マグネシウム合金製の筐体の裏面を、活性化処理用硝酸系薬液で活性化処理する。
Specifically, the chemical conversion treatment process according to the present embodiment is performed as follows.
First, both the front and back surfaces of a magnesium alloy casing are degreased with an alkaline chemical solution for degreasing treatment.
Next, the surface of the magnesium alloy case is activated with a fluoride chemical solution for activation treatment, and the back surface of the magnesium alloy case is activated with a nitric acid solution for activation treatment.
次に、マグネシウム合金製の筐体の表面及び裏面の両面を、デスマット処理用アルカリ系薬液でデスマット処理する。
次に、マグネシウム合金製の筐体の表面及び裏面の両面を、化成皮膜処理用フッ化物系薬液で化成皮膜処理し、筐体の表面及び裏面に少なくとも厚さの異なる化成皮膜を有する筐体を製造する。
Next, both the front and back surfaces of the magnesium alloy casing are desmut-treated with an alkaline chemical solution for desmut treatment.
Next, both the front and back surfaces of the magnesium alloy casing are subjected to a chemical conversion coating treatment with a fluoride chemical solution for chemical conversion coating treatment, and the casing has a chemical conversion coating having at least different thicknesses on the front and rear surfaces of the casing. To manufacture.
このようにして、マグネシウム合金製の筐体の表面に、耐蝕性及び塗装性に優れた厚膜の化成皮膜を形成し、筐体の裏面に、導通性に優れた薄膜の化成皮膜を形成することができる。
特に、活性化処理において、筐体１の表面１Ｘを布状部材３で覆った状態で筐体１の表面１Ｘを活性化処理用フッ化物系薬液１０で活性化処理するのが好ましい（図５（Ａ），（Ｂ）参照）。ここでは、筐体１の表面１Ｘは、筐体１の表面１Ｘ及び裏面１Ｙの一方、即ち、筐体１の片面である。このため、ここでは、筐体１の片面のみを布状部材３で覆った状態とする。
In this manner, a thick chemical conversion film having excellent corrosion resistance and paintability is formed on the surface of the magnesium alloy casing, and a thin chemical conversion film having excellent conductivity is formed on the rear face of the casing. be able to.
In particular, in the activation process, it is preferable to activate the surface 1X of the casing 1 with the fluoride chemical solution 10 for the activation process with the surface 1X of the casing 1 covered with the cloth-like member 3 (FIG. 5). (See (A) and (B)). Here, the front surface 1X of the housing 1 is one of the front surface 1X and the back surface 1Y of the housing 1, that is, one surface of the housing 1. For this reason, it is set as the state which covered only the single side | surface of the housing | casing 1 with the cloth-like member 3 here.
この場合、布状部材３として伸縮性のある布状部材を用い、筐体１の表面１Ｘを伸縮性のある布状部材に押し付けて筐体１の表面１Ｘ及び側面１Ｚ（端面）を布状部材３で覆った状態とするのが好ましい（図５（Ａ），（Ｂ）参照）。
また、筐体１の表面１Ｘを布状部材３で覆った状態で、脱脂処理、活性化処理、デスマット処理、化成皮膜処理を行なうのが好ましい（図７参照）。
In this case, an elastic cloth-like member is used as the cloth-like member 3, and the surface 1X of the housing 1 is pressed against the elastic cloth-like member so that the surface 1X and the side surface 1Z (end surface) of the housing 1 are cloth-like. It is preferable to cover the member 3 (see FIGS. 5A and 5B).
Moreover, it is preferable to perform a degreasing process, an activation process, a desmut process, and a chemical conversion film process in the state which covered the surface 1X of the housing | casing 1 with the cloth-like member 3 (refer FIG. 7).
なお、ここでは、マグネシウム合金製の筐体の表面を活性化処理用フッ化物系薬液で活性化処理し、筐体の裏面を活性化処理用硝酸系薬液で活性化処理するようにしているが（図１参照）、これに限られるものではなく、マグネシウム合金製の筐体の表面を少なくとも活性化処理用フッ化物系薬液で活性化処理し、筐体の裏面を活性化処理用酸系薬液で活性化処理すれば良い。 Here, the surface of the magnesium alloy casing is activated with an activation treatment fluoride chemical solution, and the rear surface of the casing is activated with an activation treatment nitric acid chemical solution. However, the present invention is not limited to this, and at least the surface of the magnesium alloy casing is activated with a fluoride chemical solution for activation treatment, and the back surface of the casing is an acid chemical solution for activation treatment. The activation process may be performed with
例えば図２に示すように、活性化処理において、筐体の表面及び裏面の両面を活性化処理用酸系薬液（例えば活性化処理用硝酸系薬液）で活性化処理（先の活性化処理；第１活性化処理）した後、筐体の表面を活性化処理用フッ化物系薬液で活性化処理（後の活性化処理；第２活性化処理）するようにしても良い。このように活性化処理を繰り返す場合、後に行なった活性化処理が有効となるため、最初にフッ化物を含まない活性化処理用薬剤で筐体の表面及び裏面の両面を活性化処理し、その後、フッ化物を含む活性化処理用薬剤で厚膜の化成皮膜を形成したい筐体の表面を活性化処理すれば良い。 For example, as shown in FIG. 2, in the activation process, both the front surface and the back surface of the housing are activated with an acid chemical solution for activation treatment (for example, nitric acid chemical solution for activation treatment) (previous activation treatment; After the first activation treatment, the surface of the housing may be activated with a fluoride chemical solution for activation treatment (subsequent activation treatment; second activation treatment). When the activation process is repeated in this manner, the activation process performed later is effective, so first activate both the front and back surfaces of the housing with an activation treatment agent that does not contain fluoride, and then The surface of the casing on which a thick chemical film is to be formed may be activated with an activation treatment agent containing fluoride.
この場合、図７に示すように、活性化処理において、筐体１の表面１Ｘを布状部材で覆った状態で筐体１の表面１Ｘ及び裏面１Ｙの両面を活性化処理用酸系薬液（例えば活性化処理用硝酸系薬液）１１で活性化処理した後、筐体１の表面１Ｘを布状部材３で覆った状態で筐体１の表面１Ｘを活性化処理用フッ化物系薬液１０で活性化処理するのが好ましい。 In this case, as shown in FIG. 7, in the activation process, both the front surface 1X and the back surface 1Y of the housing 1 are covered with an acid chemical solution for activation treatment (with the cloth-like member covering the front surface 1X of the housing 1). For example, after the activation treatment with the activation treatment nitric acid-based chemical solution 11, the surface 1 X of the housing 1 is covered with the fluoride treatment chemical solution 10 for the activation treatment in a state where the surface 1 X of the housing 1 is covered with the cloth-like member 3. An activation treatment is preferred.
ところで、上述のように、筐体１の表面１Ｘを布状部材３で覆った状態で筐体１の表面１Ｘを活性化処理する場合、筐体１の表面１Ｘを布状部材３で覆った状態とするために、図３（Ａ），（Ｂ）に示すように、枠状部材２と、枠状部材２に取り付けられた布状部材３と、筐体１の表面１Ｘ（厚膜の化成皮膜を形成する側；塗装面側）が布状部材３で覆われた状態で筐体１を保持する保持部材４とを備える筐体保持治具５を用いるのが好ましい。なお、筐体保持治具を化成処理用治具ともいう。 By the way, as described above, when the surface 1X of the housing 1 is activated while the surface 1X of the housing 1 is covered with the cloth-like member 3, the surface 1X of the housing 1 is covered with the cloth-like member 3. 3A and 3B, the frame-like member 2, the cloth-like member 3 attached to the frame-like member 2, and the surface 1X of the casing 1 (thick film) It is preferable to use a case holding jig 5 including a holding member 4 that holds the case 1 in a state where the conversion film forming side (the coated surface side) is covered with the cloth-like member 3. The housing holding jig is also referred to as a chemical conversion treatment jig.
この場合、布状部材３として伸縮性のある布状部材を用い、筐体１の表面１Ｘ（厚膜の化成皮膜を形成する側；塗装面側）を伸縮性のある布状部材３に押し付けて筐体１の表面１Ｘ及び側面１Ｚを布状部材で覆った状態とするのが好ましい。つまり、布状部材として伸縮性のある布状部材３を用い、これを筐体１の表面１Ｘに押し付けることで、筐体１の表面１Ｘだけでなく、筐体の側面１Ｚ（サイドエッジ部）も布状部材３で覆われた状態とするのが好ましい。これにより、筐体１の表面１Ｘに対する活性化処理用フッ化物系薬液１０を用いた活性化処理において、筐体１の側面１Ｚにも布状部材３を介して活性化処理用フッ化物系薬液１０を接触させることが可能となる（図６（Ｂ）参照）。この場合、保持部材４は、筐体１の表面１Ｘが押し付けられて伸縮性のある布状部材３にテンションがかかった状態で筐体１を保持することになる。 In this case, a stretchable cloth-like member is used as the cloth-like member 3, and the surface 1X of the housing 1 (the side on which the thick film is formed; the painted surface side) is pressed against the stretchable cloth-like member 3. It is preferable that the surface 1X and the side surface 1Z of the housing 1 are covered with a cloth-like member. That is, by using the cloth-like member 3 having elasticity as the cloth-like member and pressing it against the surface 1X of the housing 1, not only the surface 1X of the housing 1, but also the side surface 1Z (side edge portion) of the housing 1 Is preferably covered with the cloth-like member 3. Thereby, in the activation process using the fluoride chemical solution 10 for activation treatment on the surface 1X of the housing 1, the fluoride chemical solution for activation treatment is also applied to the side surface 1Z of the housing 1 via the cloth member 3. 10 can be brought into contact with each other (see FIG. 6B). In this case, the holding member 4 holds the housing 1 in a state where the surface 1X of the housing 1 is pressed and tension is applied to the stretchable cloth-like member 3.
ここで、枠状部材２には、薬液に浸食されない金属（例えばステンレス）や樹脂（プラスチック）を用いれば良い。
また、布状部材３は、少なくとも薬液浸透性や薬液透過性があれば良い。また、伸縮性のある布状部材３としては、例えば、ポリウレタン（例えばスパンデックス等）やポリエステル（例えばライクラ等）などを用いれば良い。
Here, a metal (for example, stainless steel) or a resin (plastic) that is not eroded by the chemical solution may be used for the frame-like member 2.
Moreover, the cloth-like member 3 should just have a chemical | medical solution permeability and a chemical | medical solution permeability at least. Moreover, as the cloth-like member 3 having elasticity, for example, polyurethane (for example, spandex) or polyester (for example, lycra) may be used.
また、保持部材４は、例えば、枠状部材２と同様の枠状部材４Ａと、その全周にわたって設けられた撥水性部材（例えばテフロン（登録商標）等の撥水性を有する部材）４Ｂとを備えるものとすれば良い。このように、保持部材４は、筐体１の周縁部に対応する位置に沿って撥水性部材４Ｂを備えるものとするのが好ましい。この場合、筐体１の表面１Ｘが布状部材３に押し付けられるように枠状部材２に筐体１をはめ込み、撥水性部材４Ｂが筐体１の裏面１Ｙに押し付けられるように保持部材４を構成する枠状部材４Ａで筐体１を押さえて固定するようにすれば良い。このように、筐体１の周縁部に撥水性部材４Ｂが接するようにすることで、筐体１の表面１Ｘに対して活性化処理用フッ化物系薬液１０を塗布する際に（図５（Ａ），（Ｂ）参照）、筐体１の裏面１Ｙ側へ活性化処理用フッ化物系薬液１０が漏れないようにすることが可能となる。 The holding member 4 includes, for example, a frame-like member 4A similar to the frame-like member 2 and a water-repellent member (for example, a member having water repellency such as Teflon (registered trademark)) 4B provided over the entire circumference thereof. It should be provided. Thus, it is preferable that the holding member 4 includes the water repellent member 4B along a position corresponding to the peripheral edge of the housing 1. In this case, the housing 1 is fitted into the frame-like member 2 so that the front surface 1X of the housing 1 is pressed against the cloth-like member 3, and the holding member 4 is attached so that the water-repellent member 4B is pressed against the back surface 1Y of the housing 1. What is necessary is just to make it hold | suppress and fix the housing | casing 1 with the frame-shaped member 4A to comprise. As described above, when the water-repellent member 4B is in contact with the peripheral portion of the casing 1, the activation treatment fluoride chemical solution 10 is applied to the surface 1X of the casing 1 (FIG. 5 ( A) and (B)), it is possible to prevent the fluoride chemical solution 10 for activation treatment from leaking to the back surface 1Y side of the housing 1.
なお、保持部材４は、これに限られるものではなく、例えば図４に示すように、枠状部材２に取り付けられたストッパ部材４Ｃとしても良い。
このような筐体保持治具５を用いる場合、筐体１の表面１Ｘに対する活性化処理用フッ化物系薬液１０を用いた活性化処理は、以下のようにして行なえば良い。
例えば図５（Ａ）に示すように、筐体１を保持した筐体保持治具５を縦置きにし、筐体保持治具５に備えられる布状部材３を介して筐体１の表面１Ｘ（片面のみ）に活性化処理用フッ化物系薬液１０を噴霧（シャワー噴霧）することによって行なえば良い（噴霧式）。また、例えば図５（Ｂ）に示すように、筐体１を保持した筐体保持治具５を横置きにし、筐体保持治具５に備えられる布状部材３を介して筐体１の表面１Ｘ（片面のみ）を活性化処理用フッ化物系薬液１０に浸漬することによって行なっても良い（浸漬式）。
The holding member 4 is not limited to this, and may be a stopper member 4C attached to the frame-shaped member 2 as shown in FIG.
When such a case holding jig 5 is used, the activation process using the fluoride chemical solution 10 for the activation process on the surface 1X of the casing 1 may be performed as follows.
For example, as shown in FIG. 5A, a case holding jig 5 holding the case 1 is placed vertically, and a surface 1X of the case 1 is inserted through a cloth-like member 3 provided in the case holding jig 5. What is necessary is just to carry out by spraying (shower spraying) the fluoride type chemical | medical solution 10 for an activation process to (one side only) (spray type). Further, for example, as shown in FIG. 5B, the case holding jig 5 holding the case 1 is placed sideways, and the case 1 of the case 1 is interposed via the cloth-like member 3 provided in the case holding jig 5. You may carry out by immersing the surface 1X (only one side) in the fluoride chemical solution 10 for an activation process (immersion type).
この場合、上述のように、布状部材３で筐体１の表面１Ｘ及び側面１Ｚが覆われていると、図６（Ｂ）に示すように、薬液１０がかかりづらい筐体１の側面１Ｚ（エッジ部）にも布状部材３（布状物質）の繊維の毛細管現象で布状部材３を伝わって薬液１０が浸透し（図中、点線の矢印で示す）、筐体１の表面１Ｘだけでなく側面１Ｚ（縦置きの場合は特に上方の側面；横置きの場合は側面の上方側）にも薬液１０を接触させることが可能となる。つまり、布状部材で覆われていないと（図６（Ａ）参照）、筐体１の側面１Ｚ（縦置きの場合は特に上方の側面；横置きの場合は側面の上方側）に薬液１０を接触させることが難しいのに対し、布状部材３で筐体１の表面１Ｘ及び側面１Ｚが覆われていると、図６（Ｂ）に示すように、筐体１の側面１Ｚ（縦置きの場合は特に上方の側面；横置きの場合は側面の上方側）にも薬液１０を接触させることが可能となる。また、噴霧式の場合、布状部材３によって、薬剤１０が筐体１の表面１Ｘや側面１Ｚにとどまり、一時保持されるため、薬液１０が筐体１の裏面１Ｚ側へ飛散しないようにすることができ、また、布状部材３がない場合よりも、薬液１０の噴霧量を削減できることになる。 In this case, as described above, when the surface 1X and the side surface 1Z of the housing 1 are covered with the cloth-like member 3, as shown in FIG. 6B, the side surface 1Z of the housing 1 where the chemical solution 10 is difficult to be applied. The chemical solution 10 permeates through the cloth-like member 3 due to the capillary action of the fibers of the cloth-like member 3 (cloth-like substance) also into the (edge portion) (shown by dotted arrows in the figure), and the surface 1X of the housing 1 Not only the side surface 1Z (particularly the upper side surface in the case of vertical installation; the upper side of the side surface in the case of horizontal installation) can be brought into contact with the side surface 1Z. That is, when not covered with a cloth-like member (see FIG. 6A), the chemical solution 10 is placed on the side surface 1Z of the housing 1 (particularly the upper side surface in the case of vertical installation; the upper side of the side surface in the case of horizontal installation). However, when the surface 1X and the side surface 1Z of the housing 1 are covered with the cloth-like member 3, the side surface 1Z (vertically placed) of the housing 1 as shown in FIG. In the case of (2), the chemical solution 10 can be brought into contact particularly with the upper side surface; In the case of the spray type, since the medicine 10 stays on the surface 1X and the side surface 1Z of the housing 1 and is temporarily held by the cloth-like member 3, the chemical solution 10 is prevented from scattering to the back surface 1Z side of the housing 1. Moreover, the spray amount of the chemical | medical solution 10 can be reduced rather than the case where the cloth-like member 3 is not provided.
また、図７に示すように、筐体保持治具５で筐体１を保持した状態、即ち、筐体１の表面１Ｘを布状部材３で覆った状態で、脱脂処理、活性化処理、デスマット処理、化成皮膜処理を行なうのが好ましい。この場合、筐体保持治具５を各処理で用いる薬液に対して耐性（耐薬品性）があるものとすれば良い。これにより、筐体保持治具５で筐体１を保持した状態で、化成処理プロセスの全ての処理を行なうことが可能となる。つまり、筐体保持治具５を付けたり、取り外したりすることなく、筐体１の表面１Ｘ及び裏面１Ｙの両面を処理する工程も含む化成処理プロセスの全ての工程を行なうことが可能となる。 Further, as shown in FIG. 7, in a state where the housing 1 is held by the housing holding jig 5, that is, in a state where the surface 1X of the housing 1 is covered with the cloth-like member 3, degreasing treatment, activation treatment, It is preferable to perform a desmut treatment or a chemical conversion film treatment. In this case, the housing holding jig 5 may be resistant (chemical resistance) to the chemical used in each process. As a result, it is possible to perform all of the chemical conversion treatment process with the housing 1 held by the housing holding jig 5. That is, all the steps of the chemical conversion treatment process including the step of treating both the front surface 1X and the back surface 1Y of the housing 1 can be performed without attaching or removing the housing holding jig 5.
例えば、筐体保持治具５で筐体１を保持し、まず、脱脂処理用アルカリ系薬液１２を用いた脱脂処理、活性化処理用酸系薬液１１（例えば活性化処理用硝酸系薬液）を用いた第１活性化処理を、それぞれ、薬液１２、１１に治具ごと浸漬することで、筐体１の表面１Ｘ及び裏面１Ｙの両面に対して脱脂処理、第１活性化処理を行なう。
次に、活性化処理用フッ化物系薬液１０を用いた第２活性化処理を、筐体保持治具５に備えられる布状部材３を介して筐体１の表面１Ｘに活性化処理用フッ化物系薬液１０を接触させることで、筐体１の表面１Ｘに対して活性化処理用フッ化物系薬液１０を用いた活性化処理を行なう。
For example, the housing 1 is held by the housing holding jig 5, and first, a degreasing treatment using an alkaline chemical solution 12 for degreasing treatment, an acid chemical solution 11 for activation treatment (for example, nitric acid chemical solution for activation treatment) is used. The first activation treatment used is immersed in the chemicals 12 and 11 together with the jig, whereby the degreasing treatment and the first activation treatment are performed on both the front surface 1X and the back surface 1Y of the housing 1.
Next, the second activation process using the fluoride chemical solution 10 for the activation process is performed on the surface 1X of the casing 1 via the cloth-like member 3 provided in the casing holding jig 5. Activation treatment using the fluoride chemical solution 10 for activation treatment is performed on the surface 1X of the casing 1 by bringing the chemical chemical solution 10 into contact therewith.
次に、デスマット処理用アルカリ系薬液１３を用いたデスマット処理、化成皮膜処理用フッ化物系薬液１４を用いた化成皮膜処理を、それぞれ、薬液１３、１４に治具ごと浸漬することで、筐体１の表面１Ｘ及び裏面１Ｙの両面に対してデスマット処理、化成皮膜処理を行なう。
このように、活性化処理用フッ化物系薬液１０を用いた活性化処理以外の処理では、筐体１の表面１Ｘ及び裏面１Ｙに対して同じ処理を行なうため、処理槽の中の薬液に治具ごと浸漬することで、筐体１の表面１Ｘ及び裏面１Ｙに対して一括処理することが可能である。
Next, the desmut treatment using the alkaline chemical solution 13 for desmut treatment and the chemical film treatment using the fluoride chemical solution 14 for chemical coating treatment are immersed in the chemical solutions 13 and 14 together with the jig, respectively. Desmut treatment and chemical conversion film treatment are performed on both the front surface 1X and the back surface 1Y.
In this way, in the processes other than the activation process using the fluoride-based chemical solution 10 for the activation process, the same process is performed on the front surface 1X and the back surface 1Y of the housing 1, so that the chemical solution in the processing tank is cured. It is possible to perform batch processing on the front surface 1X and the back surface 1Y of the housing 1 by immersing the tools together.
ところで、上述のようにしているのは、以下の理由による。
まず、耐蝕性及び塗装性を優先し、筐体の表面及び裏面の両面に厚膜の化成皮膜を形成した後、筐体の裏面に対して導通性を確保するための加工を施すことが考えられる。ここで、筐体の裏面に導通性を確保するための加工としては、例えば、裏面のアースをとる部分の化成皮膜をレーザ剥離し、導電性テープを貼り付けて導通をとったり、あるいは、ネジで締め込んで接点部分の導通をとったりすることなどが考えられる。
By the way, the reason described above is as follows.
First, giving priority to corrosion resistance and paintability, after forming a thick chemical film on both the front and back sides of the housing, it may be possible to process the back surface of the housing to ensure electrical conductivity. It is done. Here, as a process for ensuring conductivity on the back surface of the housing, for example, the chemical film on the back surface of the grounding part is laser-separated, and a conductive tape is applied to make the conductivity, or a screw is used. It is conceivable that the contact portion is made conductive by tightening.
しかしながら、この方法では、化成皮膜を形成した後に、筐体の裏面に対して導通性を確保するための加工を施すことが必要になるため、コストや手間がかかり、また、加工した部分から腐食が発生するおそれもある。例えば、レーザ剥離はコストがかかり、導電性テープの貼り付けは手間がかかる上に将来的に剥がれてアース不良になるおそれもある。また、筐体の裏面に対して導通性を確保するための加工では、化成皮膜の一部を剥がすことになるため、将来的にその部分から腐食が発生するおそれがある。 However, in this method, after forming the chemical conversion film, it is necessary to perform processing to ensure conductivity on the back surface of the housing, which is costly and troublesome, and the processed portion is corroded. May occur. For example, laser peeling is costly, and attaching a conductive tape is troublesome and may peel off in the future, resulting in poor grounding. Further, in the processing for ensuring conductivity with respect to the back surface of the housing, a part of the chemical conversion film is peeled off, and there is a possibility that corrosion will occur from that part in the future.
そこで、上述のようにすることで、化成皮膜を形成した後に、筐体の裏面に対して導通性を確保するための加工を施さなくても、筐体の表面に耐蝕性及び塗装性に優れた厚膜の化成皮膜を形成し、筐体の裏面に導通性を有する薄膜の化成皮膜を同時に形成できるようにしている。
また、耐蝕性及び塗装性が要求される筐体の表面側と、アースをとるために導通性が要求される筐体の裏面側とで、化成皮膜の膜厚を変えることが考えられる。
Therefore, by forming as above, the surface of the casing is excellent in corrosion resistance and paintability even after the chemical conversion film is formed, without performing processing for ensuring the conductivity on the back surface of the casing. A thick chemical conversion film is formed so that a conductive thin film can be simultaneously formed on the back surface of the casing.
Further, it is conceivable to change the film thickness of the chemical conversion film between the front surface side of the housing that requires corrosion resistance and paintability and the back surface side of the housing that requires electrical conductivity for grounding.
例えば、筐体の表面及び裏面の両面に薄膜の化成皮膜を形成した後、筐体の表面側のみ化成処理を継続して化成皮膜を厚膜化することが考えられる。
しかしながら、この方法では、厚膜化しない筐体の裏面側を、例えばテープや塗料のようなマスキング材で覆うことが必要となる。また、マスキングする際には、一旦、筐体の表面及び裏面の両面に形成された化成皮膜を乾燥させる必要があり、コスト、時間、工数がかかる上に、一度乾燥させた化成皮膜に続けて化成処理を行なった場合に化成皮膜が連続して形成される保障がない。
For example, it is conceivable that after forming a thin chemical conversion film on both the front and back surfaces of the housing, the chemical conversion treatment is continued only on the front surface side of the housing to increase the thickness of the chemical coating.
However, in this method, it is necessary to cover the back surface side of the casing that is not thickened with a masking material such as tape or paint. In addition, when masking, it is necessary to dry the chemical conversion film formed on both the front and back surfaces of the housing once, and it takes cost, time and man-hours. When the chemical conversion treatment is performed, there is no guarantee that the chemical conversion film is continuously formed.
そこで、上述のようにすることで、筐体の裏面側のマスキングを行なうことなく、コスト、時間、工数をかけずに、筐体の表面に耐蝕性及び塗装性に優れた厚膜の化成皮膜を形成し、筐体の裏面に導通性を有する薄膜の化成皮膜を同時に形成できるようにしている。
したがって、本実施形態にかかる化成皮膜を有する筐体の製造方法によれば、化成皮膜を形成した後に、筐体の裏面に対して導通性を確保するための加工を施さなくても、筐体の表面側を、耐蝕性及び塗装性に優れたものとし、筐体の裏面側を、導通性を有するものとすることができるという利点がある。また、筐体の裏面に対して導通性を確保するための加工を施さなくても良いため、導通性を確保するための加工を施した部分から腐食が発生するおそれがない、化成皮膜を有する筐体を実現することができるという利点がある。また、本筐体保持治具を用いることで、確実に、筐体の表面側を、耐蝕性及び塗装性に優れたものとし、筐体の裏面側を、導通性を有するものとすることができるという利点がある。
Therefore, by doing as described above, a thick chemical conversion film having excellent corrosion resistance and paintability on the surface of the housing without masking the back side of the housing and without cost, time, and man-hours. The thin film chemical film having conductivity is simultaneously formed on the back surface of the housing.
Therefore, according to the method for manufacturing a casing having a chemical conversion film according to the present embodiment, the casing can be formed without forming a chemical conversion film and then performing processing for ensuring conductivity on the back surface of the casing. There is an advantage that the front surface side can be made excellent in corrosion resistance and paintability, and the back side of the housing can be made conductive. Moreover, since it is not necessary to perform the process for ensuring the electrical conductivity on the back surface of the housing, it has a chemical conversion film that does not cause corrosion from the part subjected to the process for ensuring the electrical conductivity. There is an advantage that a housing can be realized. In addition, by using the case holding jig, the front side of the case is surely excellent in corrosion resistance and paintability, and the back side of the case is made conductive. There is an advantage that you can.
実際に、実施例として、ポリウレタン素材の布状部材を貼ったステンレスの枠状部材に、マグネシウム合金ＬＺ９１（リチウム９％、亜鉛１％）製の筐体を押し付けて固定し、ミリオン化学製のＭｇ−Ｌｉ合金用の化成処理用薬液を使用して化成皮膜の形成を行なった。
ここでは、脱脂処理において脱脂処理用アルカリ系薬液としてGF MG-15SX+GF添加剤F21を用い、先の活性化処理において活性化処理用硝酸系薬液としてGF MG-1091を用い、後の活性化処理において活性化処理用フッ化物系薬液としてGF MG-109を用い、デスマット処理においてデスマット処理用アルカリ系薬液としてGF MG-15SXを用い、化成皮膜処理において化成皮膜処理用フッ化物系薬液としてGR MC-1600を用いた。
Actually, as an example, a magnesium alloy LZ91 (9% lithium, 1% zinc) casing was pressed and fixed to a stainless steel frame-like member with a polyurethane-like cloth-like member pasted, and Million Chemical's Mg A chemical conversion film was formed using a chemical solution for chemical conversion treatment for a Li alloy.
Here, GF MG-15SX + GF additive F21 is used as an alkaline chemical solution for degreasing treatment in degreasing treatment, and GF MG-1091 is used as a nitric acid chemical solution for activation treatment in the previous activation treatment. GF MG-109 is used as the fluoride chemical solution for activation treatment in the treatment, GF MG-15SX is used as the alkaline chemical solution for desmut treatment in the desmut treatment, and GR MC is used as the fluoride chemical solution for chemical coating treatment in the desmut treatment. -1600 was used.
この結果、筐体の表面（塗装面）に白色で厚膜の化成皮膜が形成され、裏面（導通面）に橙色透明で薄膜の化成皮膜が形成された。
そして、低抵抗計ロレスタ（４探針）を使用して抵抗を測定したところ、筐体の表面（塗装面）は導通が得られなかったのに対し、裏面（導通面）では導通が得られた。
なお、本発明は、上述した実施形態に記載した構成に限定されるものではなく、本発明の趣旨を逸脱しない範囲で種々変形することが可能である。
As a result, a white and thick chemical conversion film was formed on the surface (painted surface) of the housing, and an orange transparent and thin chemical conversion film was formed on the back surface (conductive surface).
And when resistance was measured using a low resistance meter Loresta (4 probe), conduction was obtained on the back surface (conduction surface) while conduction was not obtained on the surface (painted surface) of the housing. It was.
In addition, this invention is not limited to the structure described in embodiment mentioned above, A various deformation | transformation is possible in the range which does not deviate from the meaning of this invention.
以下、上述の実施形態に関し、更に、付記を開示する。
（付記１）
マグネシウム合金製の筐体の表面を少なくとも活性化処理用フッ化物系薬液で活性化処理し、前記筐体の裏面を活性化処理用酸系薬液で活性化処理し、
前記筐体の表面及び裏面の両面を化成皮膜処理用フッ化物系薬液で化成皮膜処理し、前記筐体の表面及び裏面に少なくとも厚さの異なる化成皮膜を有する筐体を製造することを特徴とする化成皮膜を有する筐体の製造方法。
Hereinafter, additional notes will be disclosed regarding the above-described embodiment.
(Appendix 1)
The surface of the magnesium alloy casing is activated with at least a fluoride chemical solution for activation treatment, and the back surface of the casing is activated with an acid chemical solution for activation treatment,
The both surfaces of the front surface and the back surface of the housing are subjected to a chemical film treatment with a fluoride chemical solution for chemical conversion film treatment, and a housing having a chemical film having at least different thicknesses on the front surface and the back surface of the housing is manufactured. A method for manufacturing a casing having a chemical conversion film.
（付記２）
前記活性化処理において、前記筐体の表面及び裏面の両面を前記活性化処理用酸系薬液で活性化処理した後、前記筐体の表面を前記活性化処理用フッ化物系薬液で活性化処理することを特徴とする、付記１に記載の化成皮膜を有する筐体の製造方法。
（付記３）
前記活性化処理において、前記筐体の表面を布状部材で覆った状態で前記筐体の表面を前記活性化処理用フッ化物系薬液で活性化処理することを特徴とする、付記１に記載の化成皮膜を有する筐体の製造方法。
(Appendix 2)
In the activation treatment, after activation treatment is performed on the front surface and the back surface of the housing with the acid chemical solution for activation treatment, the surface of the housing is activated with the fluoride chemical solution for activation treatment. The manufacturing method of the housing | casing which has a chemical conversion film of Additional remark 1 characterized by performing.
(Appendix 3)
The supplementary note 1, wherein in the activation treatment, the surface of the housing is activated with the fluoride chemical for activation treatment in a state where the surface of the housing is covered with a cloth-like member. A method for manufacturing a casing having a chemical conversion film.
（付記４）
前記活性化処理において、前記筐体の表面を布状部材で覆った状態で前記筐体の表面及び裏面の両面を前記活性化処理用酸系薬液で活性化処理した後、前記筐体の表面を布状部材で覆った状態で前記筐体の表面を前記活性化処理用フッ化物系薬液で活性化処理することを特徴とする、付記２に記載の化成皮膜を有する筐体の製造方法。
(Appendix 4)
In the activation treatment, after the surface of the housing is covered with a cloth-like member, both the front surface and the back surface of the housing are activated with the acid chemical for activation treatment, and then the surface of the housing The method for producing a casing having a chemical conversion film according to appendix 2, wherein the surface of the casing is activated with the fluoride chemical for activation treatment in a state where the casing is covered with a cloth-like member.
（付記５）
前記筐体の表面を前記布状部材で覆った状態で前記活性化処理及び前記化成皮膜処理を行なうことを特徴とする、付記１に記載の化成皮膜を有する筐体の製造方法。
（付記６）
前記活性化処理において、前記布状部材として伸縮性のある布状部材を用い、前記筐体の表面を前記伸縮性のある布状部材に押し付けて前記筐体の表面及び側面を前記布状部材で覆った状態とすることを特徴とする、付記３〜５のいずれか１項に記載の化成皮膜を有する筐体の製造方法。
(Appendix 5)
The method for manufacturing a casing having a chemical conversion film according to appendix 1, wherein the activation treatment and the chemical conversion film treatment are performed in a state where the surface of the casing is covered with the cloth-like member.
(Appendix 6)
In the activation process, a stretchable cloth-like member is used as the cloth-like member, the surface of the housing is pressed against the stretchable cloth-like member, and the surface and side surfaces of the housing are placed on the cloth-like member. The manufacturing method of the housing | casing which has a chemical conversion film of any one of Additional remarks 3-5 characterized by the above-mentioned.
（付記７）
マグネシウム合金製の筐体であって、前記筐体の表面及び裏面に少なくとも厚さの異なる化成皮膜を有することを特徴とする化成皮膜を有する筐体。
（付記８）
枠状部材と、
前記枠状部材に取り付けられた布状部材と、
筐体の表面が前記布状部材で覆われた状態で前記筐体を保持する保持部材とを備えることを特徴とする筐体保持治具。
(Appendix 7)
A casing made of a magnesium alloy, comprising a conversion coating having at least different thicknesses on the front and back surfaces of the casing.
(Appendix 8)
A frame-shaped member;
A cloth-like member attached to the frame-like member;
A housing holding jig, comprising: a holding member that holds the housing in a state where a surface of the housing is covered with the cloth-like member.
（付記９）
前記保持部材は、前記筐体の周縁部に対応する位置に沿って撥水性部材を備えることを特徴とする、付記８に記載の筐体保持治具。
(Appendix 9)
The housing holding jig according to appendix 8, wherein the holding member includes a water-repellent member along a position corresponding to a peripheral edge of the housing.
１ 筐体
１Ｘ 表面
１Ｙ 裏面
１Ｚ 側面
２ 枠状部材
３ 布状部材
４ 保持部材
４Ａ 枠状部材
４Ｂ 撥水性部材
４Ｃ ストッパ部材
５ 筐体保持治具
１０ 活性化処理用フッ化物系薬液
１１ 活性化処理用酸系薬液（活性化処理用硝酸系薬液）
１２ 脱脂処理用アルカリ系薬液
１３ デスマット処理用アルカリ系薬液
１４ 化成皮膜処理用フッ化物系薬液
DESCRIPTION OF SYMBOLS 1 Housing | casing 1X Front surface 1Y Back surface 1Z Side surface 2 Frame-like member 3 Cloth-like member 4 Holding member 4A Frame-like member 4B Water-repellent member 4C Stopper member 5 Housing-holding jig 10 Fluoride chemical solution for activation treatment 11 Activation treatment Acid chemicals (nitric acid chemicals for activation treatment)
12 Alkaline chemical solution for degreasing treatment 13 Alkaline chemical solution for desmut treatment 14 Fluoride chemical solution for chemical conversion film treatment
Claims (8)
前記筐体の表面及び裏面の両面を化成皮膜処理用フッ化物系薬液で化成皮膜処理し、前記筐体の表面及び裏面に少なくとも厚さの異なる化成皮膜を有する筐体を製造することを特徴とする化成皮膜を有する筐体の製造方法。 The surface of the magnesium alloy casing is activated with at least a fluoride chemical solution for activation treatment, and the back surface of the casing is activated with an acid chemical solution for activation treatment,
The both surfaces of the front surface and the back surface of the housing are subjected to a chemical film treatment with a fluoride chemical solution for chemical conversion film treatment, and a housing having a chemical film having at least different thicknesses on the front surface and the back surface of the housing is manufactured. A method for manufacturing a casing having a chemical conversion film.
前記枠状部材に取り付けられた布状部材と、
筐体の表面が前記布状部材で覆われた状態で前記筐体を保持する保持部材とを備えることを特徴とする筐体保持治具。 A frame-shaped member;
A cloth-like member attached to the frame-like member;
A housing holding jig, comprising: a holding member that holds the housing in a state where a surface of the housing is covered with the cloth-like member.
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Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH02111008A (en) * | 1988-10-20 | 1990-04-24 | Mitsubishi Plastics Ind Ltd | Outer container for electronic component |
| JPH02226711A (en) * | 1989-02-28 | 1990-09-10 | Mitsubishi Plastics Ind Ltd | Outer container for electronic component |
| JP2009172559A (en) * | 2008-01-28 | 2009-08-06 | Basf Coatings Japan Ltd | Multilayer coat forming method and coated article |
| WO2011030869A1 (en) * | 2009-09-11 | 2011-03-17 | 株式会社三徳 | Magnesium-lithium alloy, rolled material, molded article, and process for producing same |
| WO2011030870A1 (en) * | 2009-09-11 | 2011-03-17 | ミリオン化学株式会社 | Magnesium-lithium alloy and surface treatment method therefor |
| JP2012097340A (en) * | 2010-11-04 | 2012-05-24 | Mitsui Mining & Smelting Co Ltd | Magnesium alloy surface treatment method |
| JP2014175132A (en) * | 2013-03-08 | 2014-09-22 | Hitachi Automotive Systems Ltd | Electronic controller and manufacturing method therefor |
-
2014
- 2014-12-16 JP JP2014254240A patent/JP2016113676A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH02111008A (en) * | 1988-10-20 | 1990-04-24 | Mitsubishi Plastics Ind Ltd | Outer container for electronic component |
| JPH02226711A (en) * | 1989-02-28 | 1990-09-10 | Mitsubishi Plastics Ind Ltd | Outer container for electronic component |
| JP2009172559A (en) * | 2008-01-28 | 2009-08-06 | Basf Coatings Japan Ltd | Multilayer coat forming method and coated article |
| WO2011030869A1 (en) * | 2009-09-11 | 2011-03-17 | 株式会社三徳 | Magnesium-lithium alloy, rolled material, molded article, and process for producing same |
| WO2011030870A1 (en) * | 2009-09-11 | 2011-03-17 | ミリオン化学株式会社 | Magnesium-lithium alloy and surface treatment method therefor |
| JP2012097340A (en) * | 2010-11-04 | 2012-05-24 | Mitsui Mining & Smelting Co Ltd | Magnesium alloy surface treatment method |
| JP2014175132A (en) * | 2013-03-08 | 2014-09-22 | Hitachi Automotive Systems Ltd | Electronic controller and manufacturing method therefor |
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