JP5961521B2 - Joining member for bolt joining - Google Patents
Joining member for bolt joining Download PDFInfo
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- JP5961521B2 JP5961521B2 JP2012227276A JP2012227276A JP5961521B2 JP 5961521 B2 JP5961521 B2 JP 5961521B2 JP 2012227276 A JP2012227276 A JP 2012227276A JP 2012227276 A JP2012227276 A JP 2012227276A JP 5961521 B2 JP5961521 B2 JP 5961521B2
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- 238000005304 joining Methods 0.000 title claims description 76
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 claims description 58
- 229910052804 chromium Inorganic materials 0.000 claims description 55
- 239000011651 chromium Substances 0.000 claims description 55
- 238000009792 diffusion process Methods 0.000 claims description 37
- 239000007769 metal material Substances 0.000 claims description 22
- 229910000975 Carbon steel Inorganic materials 0.000 claims description 11
- 239000010962 carbon steel Substances 0.000 claims description 10
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 6
- 229910052799 carbon Inorganic materials 0.000 claims description 5
- 150000001844 chromium Chemical class 0.000 claims description 4
- 229910001018 Cast iron Inorganic materials 0.000 claims description 3
- 229910001208 Crucible steel Inorganic materials 0.000 claims description 3
- 229910000963 austenitic stainless steel Inorganic materials 0.000 claims description 3
- 239000007795 chemical reaction product Substances 0.000 claims description 3
- 229910001105 martensitic stainless steel Inorganic materials 0.000 claims description 3
- 238000003763 carbonization Methods 0.000 claims 1
- 239000010410 layer Substances 0.000 description 42
- 229910000831 Steel Inorganic materials 0.000 description 20
- 239000010959 steel Substances 0.000 description 20
- 239000000843 powder Substances 0.000 description 17
- 239000000463 material Substances 0.000 description 15
- 238000000034 method Methods 0.000 description 12
- 229910001335 Galvanized steel Inorganic materials 0.000 description 11
- 230000000694 effects Effects 0.000 description 11
- 239000008397 galvanized steel Substances 0.000 description 11
- NLXLAEXVIDQMFP-UHFFFAOYSA-N Ammonia chloride Chemical compound [NH4+].[Cl-] NLXLAEXVIDQMFP-UHFFFAOYSA-N 0.000 description 10
- 238000005254 chromizing Methods 0.000 description 10
- 239000000047 product Substances 0.000 description 10
- 229910052751 metal Inorganic materials 0.000 description 9
- 239000002184 metal Substances 0.000 description 9
- GVEHJMMRQRRJPM-UHFFFAOYSA-N chromium(2+);methanidylidynechromium Chemical compound [Cr+2].[Cr]#[C-].[Cr]#[C-] GVEHJMMRQRRJPM-UHFFFAOYSA-N 0.000 description 7
- 229910003470 tongbaite Inorganic materials 0.000 description 7
- 229910000838 Al alloy Inorganic materials 0.000 description 6
- 239000004809 Teflon Substances 0.000 description 6
- 229920006362 Teflon® Polymers 0.000 description 6
- 230000000052 comparative effect Effects 0.000 description 6
- 238000010438 heat treatment Methods 0.000 description 6
- 238000010008 shearing Methods 0.000 description 6
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 5
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 5
- 235000019270 ammonium chloride Nutrition 0.000 description 5
- 239000001257 hydrogen Substances 0.000 description 5
- 229910052739 hydrogen Inorganic materials 0.000 description 5
- 239000000314 lubricant Substances 0.000 description 5
- XKRFYHLGVUSROY-UHFFFAOYSA-N Argon Chemical compound [Ar] XKRFYHLGVUSROY-UHFFFAOYSA-N 0.000 description 4
- 239000011248 coating agent Substances 0.000 description 4
- 230000007797 corrosion Effects 0.000 description 4
- 238000005260 corrosion Methods 0.000 description 4
- 238000006073 displacement reaction Methods 0.000 description 4
- 239000007787 solid Substances 0.000 description 4
- 239000003795 chemical substances by application Substances 0.000 description 3
- ZCDOYSPFYFSLEW-UHFFFAOYSA-N chromate(2-) Chemical compound [O-][Cr]([O-])(=O)=O ZCDOYSPFYFSLEW-UHFFFAOYSA-N 0.000 description 3
- 238000000576 coating method Methods 0.000 description 3
- 238000010276 construction Methods 0.000 description 3
- 230000008602 contraction Effects 0.000 description 3
- 239000007789 gas Substances 0.000 description 3
- CWQXQMHSOZUFJS-UHFFFAOYSA-N molybdenum disulfide Chemical compound S=[Mo]=S CWQXQMHSOZUFJS-UHFFFAOYSA-N 0.000 description 3
- 229910052982 molybdenum disulfide Inorganic materials 0.000 description 3
- 230000002265 prevention Effects 0.000 description 3
- 239000002893 slag Substances 0.000 description 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 229910045601 alloy Inorganic materials 0.000 description 2
- 239000000956 alloy Substances 0.000 description 2
- 229910052786 argon Inorganic materials 0.000 description 2
- 239000011261 inert gas Substances 0.000 description 2
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 description 2
- 238000005259 measurement Methods 0.000 description 2
- 230000003287 optical effect Effects 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
- 150000003839 salts Chemical class 0.000 description 2
- 238000012360 testing method Methods 0.000 description 2
- 208000019901 Anxiety disease Diseases 0.000 description 1
- BWGNESOTFCXPMA-UHFFFAOYSA-N Dihydrogen disulfide Chemical compound SS BWGNESOTFCXPMA-UHFFFAOYSA-N 0.000 description 1
- ZOKXTWBITQBERF-UHFFFAOYSA-N Molybdenum Chemical compound [Mo] ZOKXTWBITQBERF-UHFFFAOYSA-N 0.000 description 1
- 230000002159 abnormal effect Effects 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 230000002411 adverse Effects 0.000 description 1
- 230000036506 anxiety Effects 0.000 description 1
- 238000013459 approach Methods 0.000 description 1
- 238000009435 building construction Methods 0.000 description 1
- 238000005255 carburizing Methods 0.000 description 1
- 239000000919 ceramic Substances 0.000 description 1
- 239000013078 crystal Substances 0.000 description 1
- 238000013016 damping Methods 0.000 description 1
- 230000032798 delamination Effects 0.000 description 1
- 210000005069 ears Anatomy 0.000 description 1
- 229910002804 graphite Inorganic materials 0.000 description 1
- 239000010439 graphite Substances 0.000 description 1
- 150000004820 halides Chemical class 0.000 description 1
- 239000003112 inhibitor Substances 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000000116 mitigating effect Effects 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 229910052750 molybdenum Inorganic materials 0.000 description 1
- 239000011733 molybdenum Substances 0.000 description 1
- 238000007747 plating Methods 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
- 238000001878 scanning electron micrograph Methods 0.000 description 1
- 238000005245 sintering Methods 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
- 239000002344 surface layer Substances 0.000 description 1
- 238000004381 surface treatment Methods 0.000 description 1
- 238000002230 thermal chemical vapour deposition Methods 0.000 description 1
Landscapes
- Joining Of Building Structures In Genera (AREA)
- Connection Of Plates (AREA)
- Bolts, Nuts, And Washers (AREA)
Description
本発明は、ボルト接合用の接合部材に関するものである。 The present invention relates to a joining member for bolt joining.
鉄骨構造の建物や柱梁、橋梁において、接合部をボルト接合構造にする場合、高張力ボルト（以下、高力ボルトと呼称する）を用いて摩擦接合にする場合が多い。これらの構造物は耐震性や耐風圧性を高める為、接合面の摩擦係数を増大させて剛接合に近づけるべく、接合箇所を故意に腐食させたり、例えば特許文献１のように母材と添板の間に介装する接合部材の表面に多数の突起を形成させるなどの手段を講じることや、特許文献２のようにボルト接合部に環状体の部材を介装しボルトの締め付け力によって環状体を構造部材に埋め込ませるようにするなどの手段を講じることが提案されて来た。 In a steel structure building, a column beam, and a bridge, when a joint portion is a bolt joint structure, a high-tension bolt (hereinafter referred to as a high-strength bolt) is often used for friction joint. In order to increase the earthquake resistance and wind pressure resistance of these structures, the joints are intentionally corroded in order to increase the friction coefficient of the joint surfaces and approach the rigid joints. For example, as disclosed in Patent Document 1, between the base material and the accessory plate A means such as forming a large number of protrusions on the surface of the joining member interposed in the structure, or an annular member is interposed in the bolt joint as in Patent Document 2, and the annular body is structured by the tightening force of the bolt It has been proposed to take measures such as embedding in a member.
しかし、近年はこうした鉄骨構造体の耐力確保を目的とした強固な接合が向上した一方で、建造物の外壁取付け部、建物間や橋梁のユニバーサルジョイントや地震による揺れを分散させて地震力を吸収し構造体そのものの損傷を防止する制振構造など、可動接合部を有する部材取付け例が増えている。 However, in recent years, strong joints for the purpose of securing the strength of such steel structures have improved, while seismic force is absorbed by dispersing the outer wall mounting parts of buildings, universal joints between buildings and bridges, and shaking caused by earthquakes. There are an increasing number of examples of attaching a member having a movable joint, such as a vibration damping structure that prevents damage to the structure itself.
例えば、特許文献３のように接合部に滑り板と摩擦板を組み合わせる方法や、特許文献４のように例えばテフロン（登録商標）加工やテフロンシートを張り付けたスライドワッシャーを装入した制振アイソレータ―や、特許文献５のように可動支障部に二硫化モリブデン処理を施した部材を使用する方法なども提案されている。 For example, a method of combining a sliding plate and a friction plate at the joint as in Patent Document 3, or a vibration isolator with a slide washer attached with Teflon (registered trademark) processing or a Teflon sheet as in Patent Document 4, for example. In addition, a method of using a member obtained by performing molybdenum disulfide treatment on the movable obstacle as in Patent Document 5 has been proposed.
また、建築構造物の外壁については、カーテンウォールのパネルや方立など、建造物本体とは熱膨張率の異なる材質が使用されることが多く、その接合部は気温や太陽熱の影響により部材間の変位が日常的に生じるため可動接合とされている例が多いが、部材間変位により接合部の静止摩擦力を超える剪断力が働いた際に突然音を発する現象が有り、問題となっている。 In addition, the outer wall of a building structure is often made of a material that has a coefficient of thermal expansion different from that of the building body, such as curtain wall panels or stanchions. There are many cases where it is assumed that it is a movable joint because of the daily displacement of the joint, but there is a phenomenon that sudden noise is generated when a shearing force exceeding the static frictional force of the joint acts due to the displacement between members, which is a problem Yes.
この発音を防止する為には、部材間に滑りが良い板材を接合部材として挟み込んでボルトで部材同士を緊締する方法が一般的で、接合部材としては、例えば材料コストが安い普通鋼鋼鈑に防錆の為クロメート処理を施し、更にその表面に特許文献６のように固体潤滑材であるテフロンシートを貼りつけたり、特許文献７や特許文献８に記述されているようにテフロンや二硫化モリブデン、グラファイト等の固体潤滑材を主成分とする樹脂系非粘着性コーティング剤を塗布しているものが汎用されている。 In order to prevent this sound generation, a method of sandwiching a plate material with good sliding between the members as a joining member and fastening the members with bolts is generally used. As the joining member, for example, an ordinary steel plate with a low material cost is used. Chromate treatment is applied for rust prevention, and a Teflon sheet, which is a solid lubricant, is applied to the surface as in Patent Document 6, or Teflon or molybdenum disulfide as described in Patent Document 7 or Patent Document 8, The thing which apply | coated the resin type non-adhesive coating agent which has solid lubricants, such as a graphite, as a main component is used widely.
このように建築構造物に用いられる可動接合部には過度の揺れや剪断力を吸収する色々な提案がなされているが、いずれも構造が複雑で費用が掛かることや、或いは、テフロンや二硫化モリブデン等の固体潤滑材を接着或いは塗布する接合部材は、固体潤滑材に掛かる原材料費が非常に高価であるとともに、建築施工業者により１枚１枚手間を掛けて施工される為作業性が悪く、また揺れや熱膨張・収縮による変位を繰り返すことによって生ずる摩耗や、基材そのものの腐食や発錆等によって剥離したり消失することによって数年で効果を失うことから、メンテナンスの際はこれら効力を喪失した接合部材を交換する必要があって、手間と費用がかかると云った経済的観点及び耐久性に改善の余地がある。 Various proposals have been made for movable joints used in building structures to absorb excessive shaking and shearing forces, but all of them are complicated and costly, or Teflon and disulfide are used. A joining member for adhering or applying a solid lubricant such as molybdenum is very expensive in terms of raw material costs for the solid lubricant, and is poor in workability because it is constructed one by one by a construction contractor. In addition, the effect is lost in several years due to wear and tear caused by repeated displacement due to shaking, thermal expansion and contraction, and peeling or disappearing due to corrosion or rusting of the base material itself. There is room for improvement in the economical viewpoint and the durability that it is necessary to replace the joining member that has lost the cost, and that it takes time and money.
こうした建築構造物や柱梁、橋梁の可動接合部は、高力ボルトで締め付けられることを前提とする接合も多く、地震や風圧による過度の揺れや日常的に起こる熱膨張収縮による部材間の変位により接合部が摺動することが必要であり、且つ接合部に用いられるボルトは緩むことがあってはならず、過度の揺れや剪断力を吸収する為に適度の滑り摩擦を有し、尚且つ繰り返される摺動でも壊れたり表面が削がれることの無い接合部材が必要とされる。また、先に説明した外壁部材の可動接合部の場合には滑りが発生した時の発音は、時として建築物の内部にまで伝わり、異音として人々の耳に届き不快感と不安を与えるので甚だ都合が悪い。そしてこのような可動接合部は建造物や橋梁には数多く存在するので、なるべく施工性やメンテナンス性の良いことが求められる。 Many of these movable joints of building structures, columns, and bridges are presupposed to be tightened with high-strength bolts, and displacement between members due to excessive shaking caused by earthquakes and wind pressure and daily thermal expansion and contraction And the bolt used in the joint must not loosen, have moderate sliding friction to absorb excessive shaking and shearing force, and There is a need for a joining member that will not break or be scraped by repeated sliding. Also, in the case of the movable joint of the outer wall member described above, the pronunciation when the slip occurs is sometimes transmitted to the inside of the building, and it reaches the ears of people as an abnormal sound, causing discomfort and anxiety. Inconvenient. And since there are many such movable joints in buildings and bridges, it is required to have good workability and maintainability as much as possible.
本発明は、こうした従来の欠点をことごとく解消した接合部の補助部材であって、高力ボルトで締め付けられる圧力にも耐える表面硬度を持ち、且つ度重なる膨張・収縮にも耐えて摩耗や剥離も起こらない、更に接合部の剪断力が所定の値を超えた時に摺動する適度の滑り性を有するだけでなく、滑り時の発音を防止、軽減し、尚且つ高耐食性や耐久性が高いと云った性能を有し、建築物施工の際に接続部にそのまま介装するだけで良く、現場で潤滑剤の塗布など新たな手間を必要とせず、且つメンテナンスフリーを特徴とするものである。 The present invention is an auxiliary member for a joint that eliminates all of these conventional drawbacks, has a surface hardness that can withstand the pressure tightened with a high-strength bolt, and withstands repeated expansion and contraction, and wear and delamination. It does not occur, and it has not only moderate slipperiness to slide when the shearing force of the joint exceeds a predetermined value, but also prevents and reduces sound generation at the time of slipping, and also has high corrosion resistance and durability It has the above-mentioned performance, and it is only necessary to interpose it in the connection part at the time of building construction. It does not require new labor such as application of a lubricant on the site, and is characterized by maintenance-free.
従って、本発明によるボルト接合用の接合部材は、金属材料の表面に形成されたクロム拡散層を少なくとも接合面に有すること、を特徴とする。 Therefore, the joining member for bolt joining according to the present invention is characterized in that at least the joining surface has a chromium diffusion layer formed on the surface of the metal material.
このような本発明によるボルト接合用の接合部材は、好ましい様態として、前記金属材料が、炭素鋼、マルテンサイト系ステンレス鋼、オーステナイト系ステンレス鋼、鋳鉄及び鋳鋼からなるから成る群から選ばれた少なくとも一種であるもの、を包含する。 In such a joining member for bolt joining according to the present invention, as a preferred embodiment, at least the metal material is selected from the group consisting of carbon steel, martensitic stainless steel, austenitic stainless steel, cast iron and cast steel. Including one type.
このような本発明によるボルト接合用の接合部材は、更に好ましい様態として、前記クロム拡散層が、炭化クロムを含むものであるもの、を包含する。 Such a joining member for joining bolts according to the present invention includes, as a further preferred mode, one in which the chromium diffusion layer contains chromium carbide.
このような本発明によるボルト接合用の接合部材は、より好ましい様態として、前記炭化クロムが、前記金属材料中の炭素と前記金属材料中に拡散したクロムとの反応生成物であるもの、を包含する。 Such a joining member for bolt joining according to the present invention includes, as a more preferred embodiment, one in which the chromium carbide is a reaction product of carbon in the metal material and chromium diffused in the metal material. To do.
このような本発明によるボルト接合用の接合部材は、特に好ましい様態として、前記クロム拡散層が、その表面に多孔質層を有するもの、を包含する。 Such a joining member for bolt joining according to the present invention includes, as a particularly preferred mode, one in which the chromium diffusion layer has a porous layer on the surface thereof.
このような本発明によるボルト接合用の接合部材は、例えば、建築構造物の外装、または柱梁、橋梁のボルト接合部に使用されるもの、を含有する。 Such a joining member for joining bolts according to the present invention includes, for example, an exterior of a building structure, or a member used for a bolt joining portion of a column beam or a bridge.
このような本発明によるボルト接合用の接合部材は、例えば、複数の部材をボルト接合する際に前記部材と部材との間に配置されるもの、を含有する。 Such a joining member for bolt joining according to the present invention contains, for example, one that is arranged between the members when bolting a plurality of members.
このような本発明によるボルト接合用の接合部材は、例えば、複数の部材をボルト接合する際に前記部材とボルト又はナットとの間に配置されるもの、を含有する。 Such a joining member for joining bolts according to the present invention includes, for example, one that is arranged between the member and the bolt or nut when joining a plurality of members by bolts.
本発明によれば、従来の鉄骨構造の建物や柱梁、橋梁の接合部の接合力（ボルトなどに依る緊締力）を低下せしめることなく接合部の摺動が可能であり、摺動時の突発音も防止する事が出来る。 According to the present invention, the joint can be slid without reducing the joining force (tightening force due to bolts, etc.) of the conventional steel structure building, column beam, or bridge joint. Sudden sound can also be prevented.
又、本発明の接合部材は、予めクロム拡散処理（クロマイジング処理）を実施する事によって必要とされる滑り性能と発音防止、軽減機能及び防錆機能を付与出来るので、建築現場での接合作業の際に何ら新しく手間を加える必要が無く、ただ部材間に挟み込むだけで良いので、作業の簡素化が可能である。 In addition, the joining member of the present invention can provide the slip performance and sound generation prevention, mitigation function and rust prevention function required by carrying out chrome diffusion treatment (chromizing treatment) in advance, so that the joining work at the construction site At this time, it is not necessary to add any new labor, and it is only necessary to insert the material between the members, so that the work can be simplified.
又、表面に形成されたクロム硬化層は容易に剥離する事が無く、極めて高い硬度を有しているので繰り返し表面に摺動圧力がかかっても摩耗し難く、従って各種効果が継続して半永久的に接合部材としての性能を維持する事が出来るので、経済的効果は甚だ顕著である。 In addition, the hardened chromium layer formed on the surface is not easily peeled off and has a very high hardness so that it is difficult to wear even if sliding pressure is repeatedly applied to the surface. In particular, since the performance as a joining member can be maintained, the economic effect is very remarkable.
本発明によるボルト接合用の接合部材は、金属材料の表面に形成されたクロム拡散層を少なくとも接合面に有すること、を特徴とする。ここで、「ボルト接合用の接合部材」には、例えば座金、ワッシャー、滑り板、又はこれらに類似したものが包含される。 The joining member for bolt joining according to the present invention is characterized by having a chromium diffusion layer formed on the surface of a metal material at least on the joining surface. Here, the “joining member for bolt joining” includes, for example, a washer, a washer, a sliding plate, or the like.
ボルト接合用の接合部材を形成する金属材料としては、ボルト接合用の接合部材として十分な特性、例えば強度、耐候性、耐摩耗性等を有し、且つクロム拡散処理が可能なものの中から適宜選択して用いる事が出来る。好ましい金属材料としては、例えば、炭素鋼、マルテンサイト系ステンレス鋼、オーステナイト系ステンレス鋼、鋳鉄及び鋳鋼を挙げる事が出来る。この中でも炭素鋼が費用対効果の点で好ましい。 As a metal material for forming a joining member for bolt joining, a metal material having sufficient characteristics as a joining member for bolt joining, for example, strength, weather resistance, wear resistance, etc. and capable of chromium diffusion treatment is appropriately selected. You can select and use. Examples of preferable metal materials include carbon steel, martensitic stainless steel, austenitic stainless steel, cast iron, and cast steel. Among these, carbon steel is preferable in terms of cost effectiveness.
炭素鋼は、一般的に、建築物の骨格や橋梁などの建造物に適用される一般構造用炭素鋼（ＳＳ）と、機械構造用炭素鋼（ＳＣ）に分類されることがあるが、本発明では何れの炭素鋼をも用いることができる。コスト的に一般構造用炭素鋼（ＳＳ）が有利であるので、本発明による接合部材に於ける金属材料としては、特に必要性がある場合を除いては、一般構造用炭素鋼（ＳＳ）を用いるのが普通である。一般構造用炭素鋼（ＳＳ）のうち、炭素を０．１〜０．３重量％含有するものは、以下に述べる通り、クロム拡散処理によって、拡散したクロムと金属材料に含まれる炭素とが反応して、炭化クロムが生成し、炭化クロムを含有する良好なクロム拡散層を容易に形成させ易いので特に望ましい。 Carbon steel is generally classified into general structural carbon steel (SS) and mechanical structural carbon steel (SC), which are applied to buildings such as building frameworks and bridges. Any carbon steel can be used in the invention. Since the general structural carbon steel (SS) is advantageous in terms of cost, the general structural carbon steel (SS) is used as the metal material in the joining member according to the present invention unless otherwise required. Usually used. Among general structural carbon steels (SS), those containing 0.1 to 0.3% by weight of carbon react as a result of the diffusion of chromium and the carbon contained in the metal material by chromium diffusion treatment as described below. Thus, it is particularly desirable because chromium carbide is generated and a good chromium diffusion layer containing chromium carbide can be easily formed.
本発明による接合部材は、上記金属材料にクロム拡散層が形成されて成るものである。このクロム拡散層には、金属材料の内部に滲透したクロムと金属材料を構成する少なくとも一つの成分との反応生成物が含有されることがある。金属材料の表面及び表面から内部に向かって一定の領域内にこのクロム拡散層が存在する事によって、金属材料の表面硬度が向上し、クロム拡散処理をする前の金属表面硬度に比べて約５倍から１０倍高い８００〜２０００ｍＨｖという極めて硬い表面硬度が容易に得られる。尚且つ表面層は強固に密着して剥がれ難く、良好な摺動性、耐摩耗性を併せ持つものである。 The joining member according to the present invention is formed by forming a chromium diffusion layer on the metal material. This chromium diffusion layer may contain a reaction product of chromium that has penetrated into the metal material and at least one component constituting the metal material. The presence of this chromium diffusion layer in a certain region from the surface of the metal material to the inside of the metal material improves the surface hardness of the metal material, which is about 5 compared with the metal surface hardness before the chromium diffusion treatment. A very hard surface hardness of 800 to 2000 mHv which is twice to ten times higher can be easily obtained. Moreover, the surface layer is firmly adhered and hardly peeled off, and has both good slidability and wear resistance.
特に、本発明に於けるクロム拡散層は、金属材料に含まれる炭素と拡散したクロムとが化合して表面に炭化クロムを含有する硬化層を形成する場合には、その硬化層は多孔質化する為に吸音効果が有り、相手金属部材の平滑な表面と強く圧着された状態で滑りが発生しても、発音の防止や軽減にも特に有効である。 In particular, the chromium diffusion layer in the present invention is made porous when the carbon contained in the metal material and the diffused chromium combine to form a hardened layer containing chromium carbide on the surface. Therefore, there is a sound absorbing effect, and even if slippage occurs in a state where it is strongly pressed against the smooth surface of the counterpart metal member, it is particularly effective in preventing or reducing sound generation.
本発明において、炭化クロムを含有する硬化層を形成させる際は、予め浸炭処理を行う、或いはクロム拡散処理中に炭化クロムを形成させるよう雰囲気に調整する等を行うことができる。 In the present invention, when a hardened layer containing chromium carbide is formed, carburizing treatment can be performed in advance, or the atmosphere can be adjusted to form chromium carbide during chromium diffusion treatment.
本発明による接合部材では、このクロム拡散層によって金属材料の耐食性が著しく向上し、気候によって容易には発錆しない。この為に部材交換を必要としない。 In the joining member according to the present invention, the corrosion resistance of the metal material is remarkably improved by the chromium diffusion layer, and it is not easily rusted by the climate. For this reason, no member replacement is required.
しかも、当然の事ながら、この表面処理は予め加工工場で処理しておくことが出来る。このことから、建築現場等に於いて鋼構造体の組み立て作業に用いる際は、そのままの状態で容易に使用することが出来る。従って、接合部材その物の品質が安定し、且つ、鋼構造体の組み立て作業の高能率化、作業品質の安定化等を図る事が出来る。 Moreover, as a matter of course, this surface treatment can be processed in advance in a processing factory. For this reason, when used for assembling work of a steel structure at a construction site or the like, it can be easily used as it is. Therefore, the quality of the joining member itself can be stabilized, the efficiency of assembling work of the steel structure can be improved, and the work quality can be stabilized.
本発明による接合部材に於いて、そのクロム拡散層の表面硬度は３００〜２０００ｍＨｖ、好ましくは８００〜２０００ｍＨｖ、特に好ましくは１０００〜１８００ｍＨｖの範囲内である。表面硬度が３００ｍＨｖ未満である場合は十分な耐摩耗性と滑り性が発揮出来ず、一方、２０００ｍＨｖ超過では最早性能に有意差を生ずる事が無いだけでなく、コスト的にも無駄となる。ここで、クロム拡散層の表面硬度は、マイクロビッカース硬度計による測定によって求められたものである。 In the joining member according to the present invention, the surface hardness of the chromium diffusion layer is 300 to 2000 mHv, preferably 800 to 2000 mHv, particularly preferably 1000 to 1800 mHv. When the surface hardness is less than 300 mHv, sufficient wear resistance and slipperiness cannot be exhibited. On the other hand, when the surface hardness exceeds 2000 mHv, there is no longer a significant difference in performance, and costs are wasted. Here, the surface hardness of the chromium diffusion layer is determined by measurement with a micro Vickers hardness tester.
そして、クロム拡散層の厚さは、５〜１５０μｍ、好ましくは５〜１００μｍ、更に好ましくは１０〜３０μｍである。５μｍ未満では耐用年数が数十年に及ぶ建物や柱梁、橋梁の部材としては耐用年数が不足となり、１５０μｍを超えると性能過多になるだけでなく拡散被覆処理のコストも高くなって不適切であり、１０〜３０μｍであれば性能・効果・コストのいずれの点でも満足できる性能がバランス良く得る事が出来る。ここで、クロム拡散層の厚さは、光学顕微鏡による金属組織断面観察によって求められたものである。 And the thickness of a chromium diffusion layer is 5-150 micrometers, Preferably it is 5-100 micrometers, More preferably, it is 10-30 micrometers. If it is less than 5 μm, the service life of buildings, columns, and bridges that have a service life of several tens of years will be insufficient, and if it exceeds 150 μm, not only will the performance be excessive, but also the cost of diffusion coating treatment will increase, making it inappropriate. If it is 10 to 30 μm, satisfactory performance can be obtained in a well-balanced manner in terms of performance, effect, and cost. Here, the thickness of the chromium diffusion layer is determined by observing the cross section of the metal structure with an optical microscope.
クロム拡散層の表面の多孔質層の厚さは、０．５〜１０μｍ、好ましくは１〜３μｍ、である。多孔質層の有無、その程度、多孔質層の厚さは光学顕微鏡による金属組織断面観察によって確認する事が出来る。 The thickness of the porous layer on the surface of the chromium diffusion layer is 0.5 to 10 μm, preferably 1 to 3 μm. The presence or absence of the porous layer, its degree, and the thickness of the porous layer can be confirmed by observing the cross section of the metal structure with an optical microscope.
本発明による接合部材は、金属表面に形成されたクロム拡散層を少なくとも接合面に有する。接合面以外の部分（即ち、他の部材等と接合に際して接触する事が無い部分）にクロム拡散層が形成されている必要は無いが、そのような接合面以外の部分にもクロム拡散層が形成されていてもよい。また、クロム拡散層は、本発明による接合部材の接合面の全領域に形成されている事が好ましいが、接合面には一部クロム拡散層が存在していない部分があってもよい。 The joining member according to the present invention has a chromium diffusion layer formed on the metal surface at least on the joining surface. It is not necessary that a chromium diffusion layer is formed on a portion other than the bonding surface (that is, a portion that does not come into contact with other members), but a chromium diffusion layer is also formed on a portion other than the bonding surface. It may be formed. Moreover, although it is preferable that the chromium diffusion layer is formed in the whole area | region of the joining surface of the joining member by this invention, there may exist a part in which a chromium diffusion layer does not exist in part on a joining surface.
本発明の接合部材に施工するクロム拡散被覆処理としては、粉末パック法、溶融塩法、熱ＣＶＤ法、又は母材表面にクロムを含む合金粉末を混合した塗料を塗布或いはクロムメッキ処理後に不活性ガス雰囲気又は真空中でクロム成分を加熱拡散させる方法を採用出来る。 As the chromium diffusion coating applied to the joining member of the present invention, the powder pack method, the molten salt method, the thermal CVD method, or the coating material mixed with the alloy powder containing chromium on the surface of the base material is applied or inactive after the chromium plating treatment. A method of heating and diffusing the chromium component in a gas atmosphere or vacuum can be employed.
中でも粉末パック法は大量生産に向いており、最も低コストでクロム硬化層を形成出来るので、本発明に適用するクロム拡散層の形成方法として最適である。粉末パック法とは、金属クロム粉若しくは鉄クロム合金粉と、焼結防止剤としてアルミナ粉に代表されるセラミック粉末、及び塩化アンモニウムに代表されるハロゲン化物粉を混合してクロム滲透剤とし、この滲透剤の中に被処理物である接合部材を埋置し、アルゴンなどの不活性ガスや水素等の還元ガスを流しながら加熱する方法で、クロマイジング処理として知られている。 Among them, the powder pack method is suitable for mass production, and can form a chromium hardened layer at the lowest cost, and is therefore optimal as a method for forming a chromium diffusion layer applied to the present invention. The powder pack method is a mixture of metal chrome powder or iron chrome alloy powder, ceramic powder typified by alumina powder as a sintering inhibitor, and halide powder typified by ammonium chloride. This method is known as chromizing treatment, in which a bonding member, which is an object to be treated, is buried in a penetrant and heated while flowing an inert gas such as argon or a reducing gas such as hydrogen.
下記は、本発明に於いて採用されるクロム拡散処理の好ましい具体例を示すものである。
クロマイジング処理は、通常、被処理物を、金属クロム粉１０〜９０重量％、アルミナ粉１０〜９０重量％、塩化アンモニウム粉０．１〜２重量％を混合して成るクロム滲透剤と共に、半密閉容器内に充填し、アルゴンなどの不活性ガスや水素等の還元ガスを流しながら、８００℃以上で加熱する。本発明に於いては、前述した多孔質化されたクロム拡散層を安定して得るためには、９００〜１１００℃で、５〜３０時間加熱して行う事が好ましい。加熱温度が９００℃未満、又は加熱時間が５時間未満では、多孔質化されたクロム拡散層が安定した厚みとはならない為に十分な吸音効果は得られず、また加熱温度が１１００℃を超えるか、又は加熱時間３０時間を超えると、一旦形成された多孔質層が破壊される場合があり、また被処理物である金属の結晶粒増大による強度低下等の弊害が発生し易くなり、またエネルギーコストが高くなって不適切である。
The following are preferred specific examples of the chromium diffusion treatment employed in the present invention.
In the chromizing treatment, a workpiece is usually mixed with a chromium penetrant prepared by mixing 10 to 90% by weight of metal chromium powder, 10 to 90% by weight of alumina powder, and 0.1 to 2% by weight of ammonium chloride powder. Fill in a sealed container and heat at 800 ° C. or higher while flowing an inert gas such as argon or a reducing gas such as hydrogen. In the present invention, in order to stably obtain the porous chromium diffusion layer described above, it is preferable to carry out heating at 900 to 1100 ° C. for 5 to 30 hours. When the heating temperature is less than 900 ° C. or the heating time is less than 5 hours, the porous chromium diffusion layer does not have a stable thickness, so that a sufficient sound absorption effect cannot be obtained, and the heating temperature exceeds 1100 ° C. Or, if the heating time exceeds 30 hours, the porous layer once formed may be destroyed, and adverse effects such as a decrease in strength due to an increase in crystal grains of the metal to be processed are likely to occur, Energy costs are high and inappropriate.
本発明による接合部材は、好ましくは、例えば、建築構造物の外装、又は柱梁、橋梁のボルト接合部に使用する事が出来る。特に、複数の部材をボルト接合する際に前記複数の部材の間に配置されて各部材間の摺動を助ける滑り板、並びに、複数の部材をボルト接合する際に前記部材とボルト又はナットとの間に配置されるワッシャー、座金等に用いる事が出来る。 The joining member according to the present invention can be preferably used for, for example, an exterior of a building structure or a bolt joint of a column beam or a bridge. In particular, when a plurality of members are bolted together, a sliding plate that is arranged between the plurality of members to help sliding between the members, and when the plurality of members are bolted, the members and bolts or nuts Can be used for washers, washers, etc.
本発明による接合部材の形状、大きさ、厚さは、その具体的な適用対象、目的、要求特性などを考慮して定める事が出来る。例えば、滑り板として特に適した接合部材としては、厚さ０．２〜１２ｍｍの板状のもので、辺の長さが１０〜３００ｍｍの四角形状のものを上げる事が出来る。本発明による接合部材では、従来の滑り板と同様に１個又は複数個のボルト孔を有する事が出来る。ワッシャー、座金に特に適した接合部材としては、厚さ０．２〜１２ｍｍ、外径が３〜１２５ｍｍのものを挙げる事が出来る。 The shape, size, and thickness of the joining member according to the present invention can be determined in consideration of its specific application object, purpose, required characteristics, and the like. For example, as a joining member particularly suitable as a sliding plate, a plate-shaped member having a thickness of 0.2 to 12 mm and a rectangular member having a side length of 10 to 300 mm can be raised. The joining member according to the present invention can have one or a plurality of bolt holes as in the conventional sliding plate. Examples of the joining member particularly suitable for the washer and the washer include those having a thickness of 0.2 to 12 mm and an outer diameter of 3 to 125 mm.
また、接合に際し、ワッシャー及び座金の使用が省略されてボルトやナットの面が直接摺動面となる事が予定される場合には、ボルトやナットの表面にクロム拡散層を形成する事も可能である。 In addition, when the use of washers and washers is omitted and the bolt or nut surface is expected to be a direct sliding surface, a chromium diffusion layer can be formed on the bolt or nut surface. It is.
尚、１箇所の接合箇所には、本発明による接合部材を１個又は２個以上用いる事が出来、１個又は２個以上の本発明による接合部材と本発明以外の他の接合部材等を１箇所の接合箇所に同時に用いる事が出来る。 In addition, one or two or more joining members according to the present invention can be used at one joint location, and one or two or more joining members according to the present invention and other joining members other than the present invention can be used. It can be used at one joint at the same time.
以下、実施例により本発明を更に詳しく説明する。尚、下記は、本発明の実施の形態のうち好ましい例についての例示であり、従って、本発明の範囲は下記の具体的例示の範囲内のみに限定されることはない。 Hereinafter, the present invention will be described in more detail with reference to examples. In addition, the following is the illustration about a preferable example among embodiment of this invention, Therefore, the range of this invention is not limited only in the range of the following specific illustration.
＜実施例１＞
本発明の効果を確認する為に、カーテンウォールで使用される、もっともコストが安く汎用されている普通鋼鋼板（通称ＳＳ４００）の接合部材（比較材１）と、これにクロマイジング処理を行った本発明の接合部材（本発明品１）と比較した。
<Example 1>
In order to confirm the effect of the present invention, a joining member (comparative material 1) of a normal steel plate (commonly known as SS400) that is used at a curtain wall and is widely used at the lowest cost, and a chromizing treatment were performed. It compared with the joining member (this invention product 1) of this invention.
滑り板として使用するこの補助部材は、厚さ１ｍｍ、幅１００ｍｍ、長さ１００ｍｍで中央部に径２２ｍｍのボルト穴が開いた普通鋼鋼鈑（ＳＳ４００）と、ボルトワッシャーとして使用する、厚さ６ｍｍ、外径６０ｍｍで中央部に径２２ｍｍのボルト穴が開いた普通鋼鋼鈑（ＳＳ４００）を組み合わせたものであり（比較材１）、これらにクロマイジング処理を実施したもの（本発明品１）と比較した。 This auxiliary member used as a sliding plate has a thickness of 1 mm, a width of 100 mm, a length of 100 mm and a steel plate (SS400) having a bolt hole with a diameter of 22 mm in the center and a bolt washer, a thickness of 6 mm. , Which is a combination of an ordinary steel plate (SS400) with an outer diameter of 60 mm and a 22 mm diameter bolt hole in the center (Comparative material 1), and a chromizing treatment applied to these (Invention product 1) Compared with.
クロマイジング処理は、クロム粉５０％、アルミナ粉４９．５％、塩化アンモニウム粉０．５％を混合して成るクロム滲透剤中に前述の鋼鈑を埋め込んで、水素を流しながら９５０℃で１０時間加熱して行った。 The chromizing treatment is carried out by embedding the aforementioned steel slag in a chromium permeation agent obtained by mixing 50% chromium powder, 49.5% alumina powder, and 0.5% ammonium chloride powder, and flowing at 950 ° C. while flowing hydrogen. Heated for hours.
その結果、鋼鈑の全表面にクロム硬化層の厚みが１５μｍ、硬度は１４００ｍＨｖが得られ、また、走査型顕微鏡で観察したところ、図１に示すように多孔質化されたクロム硬化層が得られた。 As a result, a chromium hardened layer having a thickness of 15 μm and a hardness of 1400 mHv was obtained on the entire surface of the steel plate. When observed with a scanning microscope, a porous chromium hardened layer was obtained as shown in FIG. It was.
次に、図２Ａおよび図２Ｂに示すように、本発明の滑り板２を普通鋼製の厚さ５ｍｍ×幅１００ｍｍの電気亜鉛メッキ鋼板４とアルミニウム合金（Ａ６０６３Ｓ）製のチャンネル３（厚さ５ｍｍ×５０ｍｍ×１００ｍｍ）の背面部の間に挟み込み、Ｍ２０の高張力ボルト５（引っ張り強さ１０００〜１２００ＭＰａ）およびナット６にて、チャンネル３と滑り板４の接触面圧が２５Ｎ／ｍｍ２になるように緊締した。このとき、前記の電気亜鉛メッキ鋼板４と前記ボルト６との間には、本発明のボルトワッシャー１を挿入した。尚、図２Ａおよび図２Ｂに示すように、チャンネル鋼３の中央には径２２ｍｍのボルト穴を有し、亜鉛メッキ鋼板４のボルト穴は幅２２ｍｍ×長さ４０ｍｍの長穴とし亜鉛メッキ鋼板が可動出来る様にした。 Next, as shown in FIG. 2A and FIG. 2B, the sliding plate 2 of the present invention is made of an ordinary galvanized steel plate 4 having a thickness of 5 mm × width of 100 mm and an aluminum alloy (A6063S) channel 3 (thickness 5 mm). The contact surface pressure between the channel 3 and the sliding plate 4 becomes 25 N / mm 2 with the high tension bolt 5 (tensile strength 1000 to 1200 MPa) and the nut 6 of the M20. So tightened. At this time, the bolt washer 1 of the present invention was inserted between the electrogalvanized steel sheet 4 and the bolt 6. 2A and 2B, the center of the channel steel 3 has a bolt hole with a diameter of 22 mm, and the bolt hole of the galvanized steel sheet 4 is a long hole of 22 mm wide × 40 mm long. I made it movable.
一方、比較の為、上記の比較材１を本発明品１の代わりに用いた以外は上記と同様にして緊締した。 On the other hand, for comparison, tightening was performed in the same manner as described above except that the comparative material 1 was used instead of the product 1 of the present invention.
そして、アムスラー試験機でこれら緊締したチャンネルに剪断力を掛けて、亜鉛メッキ鋼板がずれる時の力と発生する突発音の大きさを計測し、夫々の滑り板とワッシャーの性能を評価した。結果は表１に示される通りで、汎用されている部材（比較材１）の発音時の剪断力が４．２Ｔｏｎ、突発音が１１５ｄｂであるのに対し、本発明品１の場合それぞれ２．２Ｔｏｎ、６３ｄｂとなり、本発明の滑り性改善効果と発音軽減効果が確認された。 And the shear force was applied to these tightened channels with an Amsler tester, the force when the galvanized steel plate was displaced and the magnitude of the sudden sound generated were measured, and the performance of each sliding plate and washer was evaluated. The results are as shown in Table 1. The shear force during sound generation of a widely used member (Comparative Material 1) is 4.2 Ton and the sudden sound is 115 db, whereas in the case of the product 1 of the present invention, 2. It was 2 Ton, 63 db, and it was confirmed that the present invention has the slip improvement effect and the sound reduction effect.
＜実施例２＞
実施例１同様に、汎用されている接合部材（ＳＳ４００）にクロマイジング処理を実施した（本発明品２）。クロマイジング処理は、クロム粉５０％、アルミナ粉４９．５％、塩化アンモニウム粉０．５％を混合して成るクロム滲透剤中に前述の鋼鈑を埋め込んで、水素を流しながら１０００℃で１５時間加熱して行った。その結果、鋼鈑の全表面にクロム硬化層の厚みが２７μｍ、硬度は１４７０ｍＨｖが得られ、また、走査型顕微鏡で観察したところ、実施例１と同様に多孔質化されたクロム硬化層が見られた。
<Example 2>
In the same manner as in Example 1, chromizing treatment was performed on the commonly used joining member (SS400) (Product 2 of the present invention). In the chromizing treatment, the above-mentioned steel slag was embedded in a chromium permeation agent formed by mixing 50% chromium powder, 49.5% alumina powder, and 0.5% ammonium chloride powder, and at 15O 0 C while flowing hydrogen. Heated for hours. As a result, a chromium hardened layer with a thickness of 27 μm and a hardness of 1470 mHv was obtained on the entire surface of the steel sheet. When observed with a scanning microscope, a porous chromium hardened layer was found as in Example 1. It was.
次に、実施例１と同様に亜鉛メッキ鋼板とアルミニウム合金チャンネルの間に挟み込み、同条件になるように緊締した後、剪断力を掛けて亜鉛メッキ鋼板がずれる時の力と発生する突発音の大きさを計測した。
結果は、表１に示される通りで、本発明品１と同様の効果が確認された。
Next, after sandwiching between the galvanized steel plate and the aluminum alloy channel as in Example 1 and tightening to the same condition, the shear force is applied and the galvanized steel plate is displaced and the sudden sound generated. The size was measured.
The results are as shown in Table 1, and the same effects as those of the product 1 of the present invention were confirmed.
＜実施例３＞
ＳＵＳ３０４で作った実施例１と同様の形状の接合部材にクロマイジング処理を実施した（本発明品３）。クロマイジング処理は、クロム粉５０％、アルミナ粉４９．５％、塩化アンモニウム粉０．５％を混合して成るクロム滲透剤中に前述の鋼鈑を埋め込んで、水素を流しながら１０００℃で１５時間加熱して行った。その結果、鋼鈑の全表面にクロム硬化層の厚みが４５μｍ、表面硬度が１０５０ｍＨｖのクロム硬化層が得られた。
<Example 3>
A chromizing treatment was performed on a joining member having the same shape as in Example 1 made of SUS304 (Product 3 of the present invention). In the chromizing treatment, the above-mentioned steel slag was embedded in a chromium permeation agent formed by mixing 50% chromium powder, 49.5% alumina powder, and 0.5% ammonium chloride powder, and at 15O 0 C while flowing hydrogen. Heated for hours. As a result, a chromium hardened layer having a chromium hardened layer thickness of 45 μm and a surface hardness of 1050 mHv was obtained on the entire surface of the steel sheet.
次に、実施例１と同様に亜鉛メッキ鋼板とアルミニウム合金チャンネルの間に挟み込み、同条件になるように緊締した後、剪断力を掛けてチャンネルがずれる時の力と発生する突発音の大きさを計測した。結果は表１に示すが、本発明品１、２と同様の効果が確認された。 Next, after sandwiching between the galvanized steel plate and the aluminum alloy channel as in Example 1 and tightening so as to satisfy the same condition, the force when the channel is shifted by applying a shear force and the magnitude of the sudden sound generated. Was measured. The results are shown in Table 1, and the same effects as those of the inventive products 1 and 2 were confirmed.
＜比較材２＞
ＳＵＳ３０４で作った実施例１と同様の形状の接合部材を、そのまま実施例１と同様に鋼板とチャンネルに挟み込み緊締した後、剪断力を掛けて亜鉛メッキ鋼板がずれる時の力と発生する突発音の大きさを測定した。結果は、表１に示される通りである。
<Comparison material 2>
A joining member having the same shape as that of Example 1 made of SUS304 is sandwiched between a steel plate and a channel as in Example 1 and tightened. Then, a shearing force is applied and a galvanized steel plate is displaced and a sudden sound generated. The size of was measured. The results are as shown in Table 1.
＜比較材３＞
実施例１と同様の形状の部材（ＳＳ４００）にクロメート処理をした後にテフロンシートを張り付けて接合部材として、実施例１と同様に亜鉛メッキ鋼板とアルミニウム合金チャンネルに挟み込み緊締した後、剪断力を掛けて亜鉛メッキ鋼板がずれる時の力と発生する突発音の大きさを測定した。結果は、表１に示される通りである。
<Comparative material 3>
After a chromate treatment was applied to a member (SS400) having the same shape as in Example 1, a Teflon sheet was pasted and bonded as a joining member between the galvanized steel plate and the aluminum alloy channel in the same manner as in Example 1, and then a shearing force was applied. Then, the force when the galvanized steel plate shifted and the magnitude of the sudden sound generated were measured. The results are as shown in Table 1.
＜比較材４＞
実施例１と同様の形状の部材（ＳＳ４００）にクロメート処理をした後に二硫化モリブデンを塗布して接合部材として、実施例１と同様に亜鉛メッキ鋼板とアルミニウム合金チャンネルに挟み込み緊締した後、剪断力を掛けて亜鉛メッキ鋼板がずれる時の力と発生する突発音の大きさを測定した。結果は、表１に示される通りである。
１）※１（摩擦性能）：ＪＩＳ Ｋ ７１２５準拠、電気亜鉛鍍金鋼鈑に対しての摩擦係数
２）※２（滑り性能）：１０トンアムスラー試験機による引張荷重の測定
３）※３（耐食性）：ＪＩＳ Ｋ ２３７１ＳＳＴ試験、塩水噴霧試験
<Comparative material 4>
After the chromate treatment was applied to the member (SS400) having the same shape as in Example 1, molybdenum disulfide was applied to form a joining member, which was sandwiched between the galvanized steel plate and the aluminum alloy channel as in Example 1, and then sheared. Was applied to measure the force generated when the galvanized steel sheet shifted and the size of the sudden sound generated. The results are as shown in Table 1.
1) * 1 (Friction performance): JIS K 7125 compliant, coefficient of friction against electrogalvanized steel sheet 2) * 2 (Sliding performance): Tensile load measurement with 10 ton Amsler tester 3) * 3 (Corrosion resistance) ): JIS K 2371 SST test, salt spray test
１ 本発明品（ワッシャー）
２ 本発明品（滑り板）
３ アルミニウム合金（Ａ６０６３Ｓ）チャンネル
４ 電気亜鉛メッキ鋼板
５ Ｍ２０高張力ボルト
６ Ｍ２０ナット
７ ＪＩＳワッシャー
1 Product of the present invention (washer)
2 Product of the present invention (sliding plate)
3 Aluminum alloy (A6063S) channel 4 Electrogalvanized steel plate 5 M20 high tension bolt 6 M20 nut 7 JIS washer
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| JP2012227276A JP5961521B2 (en) | 2012-10-12 | 2012-10-12 | Joining member for bolt joining |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| JPS5757912A (en) * | 1980-09-22 | 1982-04-07 | Nippon Kokan Kk | Washing primer for bolt, nut and washer |
| JPS5913063A (en) * | 1983-05-09 | 1984-01-23 | Shintou Kogyo Kk | Vapor depositing and permeating method of metal |
| JPS60177176A (en) * | 1984-02-24 | 1985-09-11 | Nisshin Steel Co Ltd | Manufacture of steel sheet diffusion-coated with chromium |
| JPH08177832A (en) * | 1994-12-26 | 1996-07-12 | Nkk Corp | Fastening method for high strength bolt |
| JPH11350108A (en) * | 1998-06-09 | 1999-12-21 | Shinto Kogyo Kk | Parts and jig for gas carburizing furnace excellent in carburizing resistance and high-temperature oxidizing resistance |
| US6435791B1 (en) * | 2000-05-19 | 2002-08-20 | Maclean-Fogg Company | Wheel fastener assemblies |
| JP2002122123A (en) * | 2000-10-13 | 2002-04-26 | Kai Kenchiku Sekkei Jimusho:Kk | Washer |
| US7497653B2 (en) * | 2001-08-20 | 2009-03-03 | Maclean-Fogg Company | Locking fastener assembly |
| JP4063709B2 (en) * | 2003-05-15 | 2008-03-19 | エア・ウォーター株式会社 | Method for surface modification of austenitic metal, refractory metal product and turbo part obtained thereby |
| JP2007162868A (en) * | 2005-12-15 | 2007-06-28 | Martec Kk | Turnable lifting tool unit |
| JP2008019923A (en) * | 2006-07-11 | 2008-01-31 | Tsubakimoto Chain Co | Automobile engine chain |
| JP2010071383A (en) * | 2008-09-18 | 2010-04-02 | Shimizu Corp | High-strength bolt frictional joining structure and high-strength bolt frictional joining method |
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