JPS6313248Y2 - - Google Patents
Info
- Publication number
- JPS6313248Y2 JPS6313248Y2 JP6148182U JP6148182U JPS6313248Y2 JP S6313248 Y2 JPS6313248 Y2 JP S6313248Y2 JP 6148182 U JP6148182 U JP 6148182U JP 6148182 U JP6148182 U JP 6148182U JP S6313248 Y2 JPS6313248 Y2 JP S6313248Y2
- Authority
- JP
- Japan
- Prior art keywords
- magnesium alloy
- corrosion
- alloy member
- bolt
- insert
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired
Links
- 229910000861 Mg alloy Inorganic materials 0.000 claims description 36
- 229910000838 Al alloy Inorganic materials 0.000 claims description 8
- 238000005260 corrosion Methods 0.000 description 13
- 230000007797 corrosion Effects 0.000 description 9
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 4
- 229910000831 Steel Inorganic materials 0.000 description 4
- 239000008151 electrolyte solution Substances 0.000 description 4
- 239000010959 steel Substances 0.000 description 4
- 238000003780 insertion Methods 0.000 description 3
- 230000037431 insertion Effects 0.000 description 3
- 230000007774 longterm Effects 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 230000013011 mating Effects 0.000 description 3
- 238000005266 casting Methods 0.000 description 2
- 230000007423 decrease Effects 0.000 description 2
- 229910052742 iron Inorganic materials 0.000 description 2
- 229910052751 metal Inorganic materials 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 description 1
- CSDREXVUYHZDNP-UHFFFAOYSA-N alumanylidynesilicon Chemical compound [Al].[Si] CSDREXVUYHZDNP-UHFFFAOYSA-N 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 238000004134 energy conservation Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- -1 ferrous metals Chemical class 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 238000005246 galvanizing Methods 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 238000007747 plating Methods 0.000 description 1
- 150000003839 salts Chemical class 0.000 description 1
- 238000007711 solidification Methods 0.000 description 1
- 230000008023 solidification Effects 0.000 description 1
- 238000004381 surface treatment Methods 0.000 description 1
- 229910052725 zinc Inorganic materials 0.000 description 1
- 239000011701 zinc Substances 0.000 description 1
Landscapes
- Prevention Of Electric Corrosion (AREA)
Description
【考案の詳細な説明】
本考案は、マグネシウム合金部材の防食構造に
係り、特に、マグネシウム合金部材を組付ける際
に異種材料からなる締付け部材と接する部位及び
その周辺を電気腐食から防ぐことができるマグネ
シウム合金部材の防食構造に関するものである。[Detailed description of the invention] The present invention relates to a corrosion protection structure for magnesium alloy members, and in particular, it is possible to prevent electrolytic corrosion at and around the parts that come into contact with fastening members made of different materials when assembling magnesium alloy members. This invention relates to an anticorrosion structure for magnesium alloy members.
近年、省エネルギーに対する社会的要請の増大
にともない、自動車産業においても車両の軽量
化、燃費の向上等の要請が高まつている。その対
策の一つに、アルミニウム系金属材料の代替物と
してマグネシウム合金の利用が期待されている。
マグネシウム合金は比重が1.83であり、構造部材
として使用することができる最も軽量な金属であ
る。 In recent years, as social demands for energy conservation have increased, demands for lighter vehicles, improved fuel efficiency, etc. have also increased in the automobile industry. As one of the countermeasures, it is expected that magnesium alloys will be used as a substitute for aluminum-based metal materials.
Magnesium alloy has a specific gravity of 1.83, making it the lightest metal that can be used as a structural member.
一方、マグネシウム合金は鉄は言うに及ばず、
同じ非鉄金属であるアルミニウム合金を比較して
も硬さが低く、耐食性に劣るという欠点を有して
いる。従つて、マグネシウム合金部材の用い方に
よつては、上記欠点に起因する問題を生ずる場合
がある。 On the other hand, magnesium alloys, not to mention iron,
Even when compared with aluminum alloys, which are also non-ferrous metals, they have the drawbacks of low hardness and poor corrosion resistance. Therefore, depending on how the magnesium alloy member is used, problems may arise due to the above-mentioned drawbacks.
以下、従来のマグネシウム合金部材の防食構造
の問題点を第１図を参照して説明する。 Hereinafter, problems with the conventional anti-corrosion structure for magnesium alloy members will be explained with reference to FIG.
マグネシウム合金部材１は亜鉛めつき等の表面
処理の施されたワツシヤー２を介して、ボルト３
によつて相手部材４に固定されている。このワツ
シヤー２及びボルト３が鋼等の鉄系材料で製造さ
れている場合には、前記マグネシウム合金部材１
とワツシヤー２又はボルト３の接触部位及びその
周辺に水、塩水等の電解質溶液が存在するとイオ
ン化傾向の違いから当該接触部位及びその周辺に
局部電池ができてマグネシウム合金部材１が優先
的に電解質溶液に溶出し電食といわれる腐食現象
を起こす。かかるマグネシウム合金部材１の腐食
は、外観を損なうばかりでなく、マグネシウム合
金部材１自体の強度低下、ボルト３のゆるみ等の
不具合を生ずるという問題がある。 The magnesium alloy member 1 is attached to a bolt 3 via a washer 2 which has been surface-treated such as galvanizing.
It is fixed to the mating member 4 by. When the washers 2 and bolts 3 are made of iron-based materials such as steel, the magnesium alloy member 1
If an electrolyte solution such as water or salt water is present in and around the contact area between the washer 2 or bolt 3, a local battery will be formed in the contact area and the surrounding area due to the difference in ionization tendency, and the magnesium alloy member 1 will preferentially absorb the electrolyte solution. It is leached out and causes a corrosion phenomenon called electrolytic corrosion. Such corrosion of the magnesium alloy member 1 not only impairs its appearance, but also causes problems such as a decrease in the strength of the magnesium alloy member 1 itself and loosening of the bolts 3.
また、マグネシウム合金は硬さが鋼等に比べて
低いため、ボルト３の締付け具合、更には使用に
よりマグネシウム合金部材１のワツシヤー２又は
ボルト３と当接している部位がへたり、そのため
ボルト３の軸力が低下するという不具合が発生す
る。 In addition, since magnesium alloy has a lower hardness than steel, etc., the part of the magnesium alloy member 1 that is in contact with the washer 2 or the bolt 3 may wear out due to the tightening condition of the bolt 3 and further due to use. A problem occurs in which the axial force decreases.
本考案は、かかる従来技術の不具合を解決する
ためになされたもので、その目的は電気腐食を防
止するだけでなく、長期の使用によつてもマグネ
シウム合金部材と締付け部材の締結部がへたるこ
とのないマグネシウム合金部材の防食構造を提供
することにある。 The present invention was devised to solve the problems of the conventional technology, and its purpose is not only to prevent electrical corrosion, but also to prevent the fastening part between the magnesium alloy member and the fastening member from becoming weak even after long-term use. The object of the present invention is to provide a corrosion-proof structure for magnesium alloy members.
かかる上記目的は、本考案によればマグネシウ
ム合金部材を締付け部材を用いて締結する構造に
おいて、マグネシウム合金部材の締付け部材と当
接する部位及びその周辺に高ケイ素アルミニウム
合金製インサートを取付けることにより達成する
ことができる。 According to the present invention, in a structure in which magnesium alloy members are fastened using a fastening member, the above object is achieved by attaching a high-silicon aluminum alloy insert to the portion of the magnesium alloy member that comes into contact with the fastening member and its surroundings. be able to.
以下、本考案の一実施例を添付図面に従つて詳
細に説明する。 Hereinafter, one embodiment of the present invention will be described in detail with reference to the accompanying drawings.
第２図は本考案にかかるマグネシウム合金部材
の防食構造の断面図を示す。第２図において、１
はマグネシウム合金から作られている部材であ
る。このマグネシウム合金部材１は亜鉛めつき等
の表面処理が施されたワツシヤー２を介してボル
ト３によつて相手部材４に固定されている。そし
てマグネシウム合金部材１のボルト挿入口５に
は、ワツシヤー２及びボルト３が直接触れないよ
うにインサート６が取付けられている。このボル
ト挿入用インサート６の材料としては高ケイ素ア
ルミニウム合金が用いられる。高ケイ素アルミニ
ウム合金はマグネシウム合金に比較して硬く、長
期間使用してもへたりがほとんど生じないこと、
またイオン化傾向の関係で鋼製ワツシヤー２又は
ボルト３との当接部に電解質溶液が付着しても電
気腐食がほとんど生じないこと、更にはマグネシ
ウム合金程ではないが軽量なことによる。かかる
高ケイ素アルミニウム合金としてはAA規格の
390，A390等を用いることができる。 FIG. 2 shows a cross-sectional view of the anticorrosion structure of the magnesium alloy member according to the present invention. In Figure 2, 1
is a member made from magnesium alloy. This magnesium alloy member 1 is fixed to a mating member 4 by a bolt 3 via a washer 2 which has been subjected to surface treatment such as zinc plating. An insert 6 is attached to the bolt insertion opening 5 of the magnesium alloy member 1 so that the washer 2 and bolt 3 do not come into direct contact with each other. A high-silicon aluminum alloy is used as the material for this bolt insertion insert 6. High-silicon aluminum alloys are harder than magnesium alloys and will hardly wear out even after long-term use.
Further, due to its ionization tendency, even if an electrolyte solution adheres to the contact portion with the steel washer 2 or bolt 3, electrical corrosion hardly occurs, and furthermore, it is lightweight although not as strong as magnesium alloy. Among such high silicon aluminum alloys, AA standard
390, A390, etc. can be used.
また、マグネシウム合金部材１へのインサート
６の取付け方法としては、塑性加工又は鋳造法に
より第２図に示す如き形状のインサート６を成形
又は製造し、第２図に示すような状態に圧入する
ことができる。また第２図に示す形状のインサー
ト６を成形後、金型の所定位置に設置し、高圧凝
固法等によりマグネシウム合金部材を鋳造する際
に一体的に鋳ぐるむこともできる。 Further, as a method for attaching the insert 6 to the magnesium alloy member 1, the insert 6 having the shape shown in FIG. 2 is formed or manufactured by plastic working or casting, and then press-fitted into the state shown in FIG. 2. I can do it. Further, after molding, the insert 6 having the shape shown in FIG. 2 can be placed at a predetermined position in a mold and integrally cast when casting a magnesium alloy member by high-pressure solidification or the like.
以上述べた如く、本考案にかかるマグネシウム
合金部材の防食構造は、ワツシヤー及びボルトが
当接する部位及びその周辺に高ケイ素アルミニウ
ム合金からなるインサートが取付けられているた
め、鋼製ワツシヤー及びボルトはインサートに当
接しマグネシウム合金部材と接触せず、そのため
締結部に電解質溶液が付着しても電気腐食が起こ
ることはない。 As mentioned above, the anti-corrosion structure of the magnesium alloy member according to the present invention has inserts made of high-silicon aluminum alloy attached to and around the areas where the washers and bolts come into contact, so that the steel washers and bolts do not attach to the inserts. It abuts and does not come into contact with the magnesium alloy member, so even if electrolyte solution adheres to the fastening part, electrical corrosion will not occur.
また、インサートを形成している高ケイ素アル
ミニウム合金は硬いため、マグネシウム合金のよ
うにへたりを発生することはない。従つて、本考
案によれば長期間の使用に耐えるマグネシウム合
金部材を得ることができる。 Additionally, the high-silicon aluminum alloy that makes up the insert is hard, so it does not sag like magnesium alloy does. Therefore, according to the present invention, a magnesium alloy member that can withstand long-term use can be obtained.
第１図は従来のマグネシウム合金部材の防食構
造を示す断面図、第２図は本考案のマグネシウム
合金部材の防食構造を示す断面図である。
１……マグネシウム合金部材、２……ワツシヤ
ー、３……ボルト、４……相手部材、５……ボル
ト挿入口、６……インサート。
FIG. 1 is a cross-sectional view showing a conventional anti-corrosion structure of a magnesium alloy member, and FIG. 2 is a cross-sectional view showing an anti-corrosion structure of a magnesium alloy member according to the present invention. 1... Magnesium alloy member, 2... Washer, 3... Bolt, 4... Mating member, 5... Bolt insertion opening, 6... Insert.
Claims (1)
結する構造において、マグネシウム合金部材の締
付け部材と当接する部位及びその周辺に高ケイ素
アルミニウム合金製インサートを取付けたことを
特徴とするマグネシウム合金部材の防食構造。 A structure for fastening magnesium alloy members using a fastening member, characterized in that a high-silicon aluminum alloy insert is attached to a portion of the magnesium alloy member that comes into contact with the fastening member and its surroundings.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6148182U JPS58163562U (en) | 1982-04-27 | 1982-04-27 | Anti-corrosion structure of magnesium alloy parts |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6148182U JPS58163562U (en) | 1982-04-27 | 1982-04-27 | Anti-corrosion structure of magnesium alloy parts |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS58163562U JPS58163562U (en) | 1983-10-31 |
| JPS6313248Y2 true JPS6313248Y2 (en) | 1988-04-14 |
Family
ID=30071676
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP6148182U Granted JPS58163562U (en) | 1982-04-27 | 1982-04-27 | Anti-corrosion structure of magnesium alloy parts |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS58163562U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002218871A (en) * | 2001-01-24 | 2002-08-06 | Shimano Inc | Structure for fastening component for fishing tackle |
| JP2011509204A (en) * | 2007-12-06 | 2011-03-24 | ダイムラー・アクチェンゲゼルシャフト | Corrosion protection for fixed elements of high alloy steel components |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2715758B2 (en) * | 1991-11-06 | 1998-02-18 | 日本軽金属株式会社 | Joint structure with excellent corrosion resistance |
| JP2011137415A (en) * | 2009-12-28 | 2011-07-14 | Kawasaki Heavy Ind Ltd | Drain bolt mounting structure |
-
1982
- 1982-04-27 JP JP6148182U patent/JPS58163562U/en active Granted
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002218871A (en) * | 2001-01-24 | 2002-08-06 | Shimano Inc | Structure for fastening component for fishing tackle |
| JP4553495B2 (en) * | 2001-01-24 | 2010-09-29 | 株式会社シマノ | Fastening structure for fishing parts |
| JP2011509204A (en) * | 2007-12-06 | 2011-03-24 | ダイムラー・アクチェンゲゼルシャフト | Corrosion protection for fixed elements of high alloy steel components |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS58163562U (en) | 1983-10-31 |
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