JP5642520B2 - Sealing agent, fastener, bolt and method for producing the same - Google Patents
Sealing agent, fastener, bolt and method for producing the same Download PDFInfo
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- JP5642520B2 JP5642520B2 JP2010268557A JP2010268557A JP5642520B2 JP 5642520 B2 JP5642520 B2 JP 5642520B2 JP 2010268557 A JP2010268557 A JP 2010268557A JP 2010268557 A JP2010268557 A JP 2010268557A JP 5642520 B2 JP5642520 B2 JP 5642520B2
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- bolt
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- sealing agent
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- 238000007789 sealing Methods 0.000 title claims description 51
- 238000004519 manufacturing process Methods 0.000 title claims description 3
- 238000005507 spraying Methods 0.000 claims description 92
- 239000003795 chemical substances by application Substances 0.000 claims description 45
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 claims description 38
- 239000001993 wax Substances 0.000 claims description 34
- 230000002265 prevention Effects 0.000 claims description 33
- 239000012188 paraffin wax Substances 0.000 claims description 21
- 238000000034 method Methods 0.000 claims description 14
- 229920005989 resin Polymers 0.000 claims description 13
- 239000011347 resin Substances 0.000 claims description 13
- 239000007921 spray Substances 0.000 claims description 6
- 238000000576 coating method Methods 0.000 description 31
- 239000011248 coating agent Substances 0.000 description 27
- 229910000831 Steel Inorganic materials 0.000 description 17
- 239000010959 steel Substances 0.000 description 17
- 229910045601 alloy Inorganic materials 0.000 description 13
- 239000000956 alloy Substances 0.000 description 13
- 238000005260 corrosion Methods 0.000 description 12
- 230000007797 corrosion Effects 0.000 description 9
- 229920002050 silicone resin Polymers 0.000 description 9
- 229910018134 Al-Mg Inorganic materials 0.000 description 7
- 229910018467 Al—Mg Inorganic materials 0.000 description 7
- NIXOWILDQLNWCW-UHFFFAOYSA-N acrylic acid group Chemical group C(C=C)(=O)O NIXOWILDQLNWCW-UHFFFAOYSA-N 0.000 description 7
- 238000005259 measurement Methods 0.000 description 7
- 238000012360 testing method Methods 0.000 description 7
- 238000007750 plasma spraying Methods 0.000 description 6
- 238000002156 mixing Methods 0.000 description 5
- 239000004593 Epoxy Substances 0.000 description 4
- 239000005011 phenolic resin Substances 0.000 description 4
- 229920005749 polyurethane resin Polymers 0.000 description 4
- 230000003449 preventive effect Effects 0.000 description 4
- 239000000565 sealant Substances 0.000 description 4
- 230000003746 surface roughness Effects 0.000 description 4
- 229910052782 aluminium Inorganic materials 0.000 description 3
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 3
- 229920001296 polysiloxane Polymers 0.000 description 3
- 239000002966 varnish Substances 0.000 description 3
- 239000004640 Melamine resin Substances 0.000 description 2
- 229920000877 Melamine resin Polymers 0.000 description 2
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 description 2
- 229910000611 Zinc aluminium Inorganic materials 0.000 description 2
- 238000012790 confirmation Methods 0.000 description 2
- 238000010276 construction Methods 0.000 description 2
- 239000003822 epoxy resin Substances 0.000 description 2
- 239000003973 paint Substances 0.000 description 2
- 239000002245 particle Substances 0.000 description 2
- 229920006122 polyamide resin Polymers 0.000 description 2
- 229920000647 polyepoxide Polymers 0.000 description 2
- 239000004645 polyester resin Substances 0.000 description 2
- 229920001225 polyester resin Polymers 0.000 description 2
- 230000001603 reducing effect Effects 0.000 description 2
- 125000000391 vinyl group Chemical group [H]C([*])=C([H])[H] 0.000 description 2
- 229920002554 vinyl polymer Polymers 0.000 description 2
- 229910052725 zinc Inorganic materials 0.000 description 2
- 239000011701 zinc Substances 0.000 description 2
- DSEKYWAQQVUQTP-XEWMWGOFSA-N (2r,4r,4as,6as,6as,6br,8ar,12ar,14as,14bs)-2-hydroxy-4,4a,6a,6b,8a,11,11,14a-octamethyl-2,4,5,6,6a,7,8,9,10,12,12a,13,14,14b-tetradecahydro-1h-picen-3-one Chemical compound C([C@H]1[C@]2(C)CC[C@@]34C)C(C)(C)CC[C@]1(C)CC[C@]2(C)[C@H]4CC[C@@]1(C)[C@H]3C[C@@H](O)C(=O)[C@@H]1C DSEKYWAQQVUQTP-XEWMWGOFSA-N 0.000 description 1
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 description 1
- 229910000861 Mg alloy Inorganic materials 0.000 description 1
- ZOKXTWBITQBERF-UHFFFAOYSA-N Molybdenum Chemical compound [Mo] ZOKXTWBITQBERF-UHFFFAOYSA-N 0.000 description 1
- 239000004698 Polyethylene Substances 0.000 description 1
- 239000002390 adhesive tape Substances 0.000 description 1
- HXFVOUUOTHJFPX-UHFFFAOYSA-N alumane;zinc Chemical compound [AlH3].[Zn] HXFVOUUOTHJFPX-UHFFFAOYSA-N 0.000 description 1
- SNAAJJQQZSMGQD-UHFFFAOYSA-N aluminum magnesium Chemical compound [Mg].[Al] SNAAJJQQZSMGQD-UHFFFAOYSA-N 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000009835 boiling Methods 0.000 description 1
- 229910052804 chromium Inorganic materials 0.000 description 1
- 239000011651 chromium Substances 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000007865 diluting Methods 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 238000010285 flame spraying Methods 0.000 description 1
- 238000012812 general test Methods 0.000 description 1
- 229910052500 inorganic mineral Inorganic materials 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 239000004200 microcrystalline wax Substances 0.000 description 1
- 235000019808 microcrystalline wax Nutrition 0.000 description 1
- 239000011707 mineral Substances 0.000 description 1
- 229910052750 molybdenum Inorganic materials 0.000 description 1
- 239000011733 molybdenum Substances 0.000 description 1
- 239000012170 montan wax Substances 0.000 description 1
- 239000003208 petroleum Substances 0.000 description 1
- -1 polyethylene Polymers 0.000 description 1
- 229920000573 polyethylene Polymers 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
- 238000009864 tensile test Methods 0.000 description 1
- 238000007751 thermal spraying Methods 0.000 description 1
- WFKWXMTUELFFGS-UHFFFAOYSA-N tungsten Chemical compound [W] WFKWXMTUELFFGS-UHFFFAOYSA-N 0.000 description 1
- 229910052721 tungsten Inorganic materials 0.000 description 1
- 239000010937 tungsten Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16B—DEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS OR MACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS, CLIPS OR WEDGES; JOINTS OR JOINTING
- F16B33/00—Features common to bolt and nut
- F16B33/06—Surface treatment of parts furnished with screw-thread, e.g. for preventing seizure or fretting
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16B—DEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS OR MACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS, CLIPS OR WEDGES; JOINTS OR JOINTING
- F16B33/00—Features common to bolt and nut
- F16B33/008—Corrosion preventing means
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16B—DEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS OR MACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS, CLIPS OR WEDGES; JOINTS OR JOINTING
- F16B5/00—Joining sheets or plates, e.g. panels, to one another or to strips or bars parallel to them
- F16B5/02—Joining sheets or plates, e.g. panels, to one another or to strips or bars parallel to them by means of fastening members using screw-thread
Description
本発明は、防錆用溶射皮膜が形成されたボルト用の封孔処理剤、並びに例えば日本工業規格であるＪＩＳ Ｈ ８３００：２００５「亜鉛・アルミニウム及びそれらの合金の溶射」にて規定されている鉄鋼の防食目的で施される亜鉛・アルミニウム及びそれらの合金の溶射被膜に準ずるアルミニウム、亜鉛アルミニウム合金やアルミニウムマグネシウム合金などの防錆用溶射皮膜が形成された被締結体の締結に使用される締結具、ボルトおよびその製造方法に関する。 The present invention is specified in a sealing agent for bolts on which a rust-proof spray coating is formed, and for example, JIS H 8300: 2005 “Zinc-aluminum and their alloys sprayed” which is a Japanese industrial standard. Fastening used for fastening fastened objects with anti-corrosion coatings such as aluminum, zinc-aluminum alloys, and aluminum magnesium alloys in accordance with the spray coatings of zinc and aluminum and their alloys for the purpose of corrosion protection of steel The present invention relates to a tool, a bolt, and a manufacturing method thereof.
道路橋の鋼桁などの鋼構造物の腐食対策として、工場において鋼構造物の表面に高耐食性合金を溶射することにより高耐食性皮膜を形成することが行われている。そして、この種の鋼構造物はその構造上、現場接続が必要であり、現場において添接板を用いて高力ボルト（ＨＴＢ）およびナットにより接続されることが多い。ところが、この高力ボルトおよびナット自体には鋼構造物本体のような高耐食性皮膜が形成されていないので、鋼構造物本体よりも高力ボルトおよびナットの耐用年数の方が短く、高力ボルトおよびナットの耐用年数に合わせてメンテナンスを行う必要がある。 As a countermeasure against corrosion of a steel structure such as a steel girder of a road bridge, a high corrosion resistance film is formed by spraying a high corrosion resistance alloy on the surface of the steel structure in a factory. And, this type of steel structure requires on-site connection because of its structure, and is often connected on the site using high strength bolts (HTB) and nuts using an attachment plate. However, the high-strength bolts and nuts themselves are not formed with a high corrosion-resistant coating like the steel structure body, so the life of the high-strength bolts and nuts is shorter than that of the steel structure body. It is necessary to perform maintenance according to the service life of the nut.
そこで、鋼構造物の表面と同様に、高力ボルトおよびナットにも高耐食性皮膜を形成することが望まれている。例えば、特許文献１には、ボルト本体のねじ部あるいは全体にモリブデン、クロム、タングステン等の金属または合金からなる１０〜１５０μｍの厚さの溶射層を設けたボルトが開示されている。また、特許文献２には、受圧ねじ面に粒径が１０μｍ以下の硬質粒子を高速火炎溶射方法で付着させたボルトが開示されている。 Therefore, it is desired to form a high corrosion resistance film on the high-strength bolts and nuts as well as the surface of the steel structure. For example, Patent Literature 1 discloses a bolt in which a thermal spray layer having a thickness of 10 to 150 μm made of a metal or an alloy such as molybdenum, chromium, tungsten, or the like is provided on a screw portion of the bolt main body or on the whole. Patent Document 2 discloses a bolt in which hard particles having a particle size of 10 μm or less are attached to a pressure-receiving screw surface by a high-speed flame spraying method.
そして、高耐食性皮膜が形成された鋼構造物本体と同じ耐用年数で高力ボルトおよびナットを使用するためには、特許文献１，２に記載のように高力ボルトのねじ部だけでなく、高力ボルトおよびナットの全体に高耐食性溶射皮膜を形成する必要があると考えられる。ところが、実際に高耐食性皮膜を溶射により全体に形成した高力ボルトおよびナットを用いて鋼構造物を締め付けてみると、所定の締め付けトルクで締め付けても要求される軸力が得られないことが分かった。 And in order to use high strength bolts and nuts with the same service life as the steel structure body on which the high corrosion resistance film is formed, not only the threaded portion of the high strength bolt as described in Patent Documents 1 and 2, It is considered necessary to form a high corrosion resistance sprayed coating on the entire high strength bolt and nut. However, when a steel structure is tightened using high-strength bolts and nuts that have been formed by spraying a high corrosion-resistant coating, the required axial force may not be obtained even when tightening with a predetermined tightening torque. I understood.
本発明が解決しようとする課題は、防錆用溶射皮膜が形成されたボルトを所定の締め付けトルクで締め付けた際に、要求される軸力を得ることを可能にすることである。 The problem to be solved by the present invention is to make it possible to obtain the required axial force when a bolt on which a rust-proof spray coating is formed is tightened with a predetermined tightening torque.
本発明の封孔処理剤は、少なくともねじ部に防錆用溶射皮膜が形成されたボルト用の封孔処理剤であって、１〜１０質量％のワックスを含むものである。本発明の封孔処理剤により、少なくともねじ部に防錆用溶射皮膜が形成されたボルトに封孔処理すると、ボルトのねじ部に封孔処理剤とともにワックスが定着する。このボルトによれば、ねじ部に定着したワックスがナットとの間の摩擦を軽減するので、所定の締め付けトルクで締め付けた際に要求された軸力を得ることが可能となる。 The sealing treatment agent of the present invention is a sealing treatment agent for bolts in which a rust-proof spray coating is formed at least on the threaded portion, and contains 1 to 10% by mass of wax. When the sealing treatment agent of the present invention is used to seal a bolt having a rust-proof spray coating formed on at least the screw portion, wax is fixed to the screw portion of the bolt together with the sealing treatment agent. According to this bolt, the wax fixed on the thread portion reduces the friction with the nut, so that it is possible to obtain the required axial force when tightened with a predetermined tightening torque.
なお、封孔処理剤に含まれるワックスが１質量％未満の場合には、ナットとの摩擦軽減作用が不足して、所定の締め付けトルクで締め付けた際に要求された軸力を得ることができなくなる。また、ボルトを含む施工物に美観等の目的で塗装を施す際には、１〜５質量％のワックスを含む封孔処理剤とすることが望ましい。塗装を施す場合、封孔処理剤に含まれるワックスが５質量％を超えると、封孔処理剤と塗装との密着性能が低下する。一方、塗装を施さない場合でも１０質量％以下とすることが望ましく、１０質量％を超えると、ワックスの含有量が多すぎるため、ボルトのねじ部への定着力が弱くなり、締め付け時にワックスが剥がれ落ちることになる。 When the wax contained in the sealing agent is less than 1% by mass, the friction reducing action with the nut is insufficient, and the required axial force can be obtained when tightening with a predetermined tightening torque. Disappear. Moreover, when applying to the construction containing a bolt for the purpose of aesthetics etc., it is desirable to set it as the sealing agent containing 1-5 mass% wax. When coating is performed, if the wax contained in the sealing agent exceeds 5% by mass, the adhesion performance between the sealing agent and the coating deteriorates. On the other hand, it is desirable that the content be 10% by mass or less even when the coating is not applied. If the content exceeds 10% by mass, the content of the wax is too large, so that the fixing force to the screw portion of the bolt becomes weak, and the wax is not tightened. It will peel off.
ここで、本発明の封孔処理剤の主成分は、樹脂系封孔剤であることが望ましい。樹脂系封孔剤としては、エポキシ系樹脂、フェノール系樹脂、シリコーン系樹脂、ビニル樹脂、ポリエステル樹脂、ポリウレタン樹脂、エポキシフェノール樹脂、ポリアミド樹脂やエポキシメラミン樹脂などを使用することができる。 Here, the main component of the sealing agent of the present invention is preferably a resin-based sealing agent. As the resin sealant, epoxy resin, phenol resin, silicone resin, vinyl resin, polyester resin, polyurethane resin, epoxy phenol resin, polyamide resin, epoxy melamine resin, and the like can be used.
本発明者らは、防錆用溶射皮膜が形成された被締結体を、防錆用溶射皮膜が形成されたボルトおよびナットにより締め付けることについて鋭意研究を重ねた結果、被締結体の防錆用溶射皮膜面とボルトおよびナットの防錆用溶射皮膜面同士を合わせて締め付けた際に、その摺動面において焼き付きにより、柔らかい防錆用溶射皮膜同士が一体化してしまい、それ以上締め付けることができなくなってしまうことを見いだし、本発明をなすに至った。 As a result of intensive research on tightening the object to be fastened with the rust-preventing thermal spray coating with the bolts and nuts with the rust-preventive thermal spraying film formed, When the thermal spray coating surface and the bolt and nut anti-corrosion coating surfaces are tightened together, soft sliding coatings for anti-corrosion are integrated with each other due to seizure on the sliding surface, allowing further tightening. It was found that it was lost, and the present invention was made.
また、本発明の締結具は、防錆用溶射皮膜が形成された被締結体の締結に使用される締結具であって、頭部およびねじ部を含む全面に防錆用溶射皮膜が形成され、少なくともねじ部が１〜１０質量％のワックスを含む封孔処理剤により封孔処理されたボルトと、被締結体を挟んでボルトのねじ部に締め付けられるナットであり、内ねじ部と被締結体側の接触面とを除く全面に防錆用溶射皮膜が形成されたナットとを含む締結具である。 Further, the fastener of the present invention is a fastener used for fastening an object to be fastened having a rust-proof spray coating formed thereon, and the rust-proof spray coating is formed on the entire surface including the head and the screw portion. A bolt that is sealed with a sealing agent containing at least 1 to 10% by weight of a wax, and a nut that is fastened to the threaded portion of the bolt across the body to be fastened. A fastener including a nut having a thermal spray coating for rust prevention formed on the entire surface excluding the contact surface on the body side.
従来の全体に防錆用溶射皮膜が形成された締結具では、被締結体の防錆用溶射皮膜面とボルトおよびナットの防錆用溶射皮膜面同士を合わせて締め付けた際に、その摺動面において焼き付きにより、柔らかい防錆用溶射皮膜同士が一体化してしまい、それ以上締め付けることができなくなってしまうが、本発明の締結具では、ナットの内ねじ部および被締結体側の接触面には防錆用溶射皮膜が形成されていないので、ナットの締め付けの際のナットと被締結体との摺動面およびナットの内ねじ部とボルトのねじ部との摺動面では、一方の面にしか防錆用溶射皮膜が存在しない。そのため、ナットの締め付けの際に前述のように摺動面で防錆用溶射皮膜が一体化することがない。そして、このボルトのねじ部には封孔処理剤とともにワックスが定着しており、ナットとの間の摩擦を軽減するので、所定の締め付けトルクで最後まで締め付けることができる。 In conventional fasteners with a rust-proof spray coating formed on the entire surface, when the rust-prevention spray coating surface of the object to be fastened and the rust-prevention spray coating surfaces of the bolts and nuts are tightened together, the sliding Although the thermal spray coatings for soft rust prevention are integrated with each other due to seizure on the surface, it becomes impossible to tighten any more, but in the fastener of the present invention, the inner threaded portion of the nut and the contact surface on the fastened body side Since the thermal spray coating for rust prevention is not formed, the sliding surface between the nut and the body to be fastened and the sliding surface between the inner threaded portion of the nut and the threaded portion of the bolt when tightening the nut are on one side. However, there is no spray coating for rust prevention. Therefore, when the nut is tightened, the spray coating for rust prevention is not integrated on the sliding surface as described above. Then, wax is fixed to the screw portion of the bolt together with the sealing agent, and the friction with the nut is reduced, so that the bolt can be tightened to the end with a predetermined tightening torque.
また、本発明の締結具による締め付け後、ナットの防錆用溶射皮膜が形成されていない内ネジ部と被締結体側の接触面には、それぞれの対面側の防錆用溶射皮膜が密着して一体化するので、この防錆用溶射皮膜により保護される。 In addition, after tightening with the fastener of the present invention, the rust-preventing thermal spray coating on the opposite side is in close contact with the inner screw portion of the nut on which the rust-preventing thermal spray coating is not formed and the contact surface on the fastened body side. Since it is integrated, it is protected by this thermal spray coating for rust prevention.
ここで、ナットの防錆用溶射皮膜は、アーク溶射法により形成されたものであり、ボルトの防錆用溶射皮膜は、ガス溶射法またはプラズマ溶射法により形成されたものであることが望ましい。アーク溶射法により形成される防錆用溶射皮膜は、ガス溶射法またはプラズマ溶射法により形成される防錆用溶射皮膜と比較して、表面粗さが粗く、密着力が高いので、インパクトレンチなどにより回転させるナットに適用することで防錆用溶射皮膜の剥離を防止することができる。一方、ガス溶射法またはプラズマ溶射法により形成される防錆用溶射皮膜は、表面粗さが細かいので、ボルトに適用することでボルトのねじ部に形成される防錆用溶射皮膜の表面が滑らかとなり、ナットを締め付けやすくなる。 Here, it is preferable that the rust-preventing spray coating of the nut is formed by an arc spraying method, and the rust-preventing spraying coating of the bolt is formed by a gas spraying method or a plasma spraying method. The rust-proof spray coating formed by arc spraying has a rougher surface roughness and higher adhesion than rust-proof spray coatings formed by gas spraying or plasma spraying. By applying to a nut that is rotated by the above, it is possible to prevent the thermal spray coating for rust prevention from peeling off. On the other hand, since the surface roughness of the rust-preventing spray coating formed by gas spraying or plasma spraying is fine, the surface of the rust-preventing spraying coating formed on the screw thread of the bolt when applied to the bolt is smooth. It becomes easy to tighten the nut.
（１）１〜１０質量％のワックスを含む封孔処理剤により、少なくともねじ部に防錆用溶射皮膜が形成されたボルトに封孔処理すると、ボルトのねじ部に封孔処理剤とともにワックスが定着して、ねじ部に定着したワックスがナットとの間の摩擦を軽減するので、所定の締め付けトルクで締め付けた際に要求された軸力を得ることが可能となる。 (1) When a sealing treatment agent containing 1 to 10% by mass of wax is subjected to a sealing treatment on a bolt having a rust-proof spray coating formed on at least a screw portion, the wax is contained in the screw portion of the bolt together with the sealing treatment agent. The wax that is fixed and fixed on the screw portion reduces friction with the nut, so that it is possible to obtain the required axial force when tightened with a predetermined tightening torque.
（２）被締結体を挟んでボルトのねじ部に締め付けられるナットであり、内ねじ部と被締結体側の接触面とを除く全面に防錆用溶射皮膜が形成され、少なくともねじ部が１〜１０質量％のワックスを含む封孔処理剤により封孔処理されたナットを含む締結具によれば、ナットの締め付けの際に摺動面で防錆用溶射皮膜が一体化することがない。また、このボルトのねじ部には封孔処理剤とともにワックスが定着しており、ナットとの間の摩擦を軽減し、所定の締め付けトルクで最後まで締め付けることができるので、所定の締め付けトルクで締め付けた際に要求される軸力を得ることが可能となる。 (2) A nut that is fastened to a threaded portion of a bolt across a body to be fastened, and a rust-preventing thermal spray coating is formed on the entire surface except the inner threaded portion and the contact surface on the body to be fastened, and at least the threaded portion is 1 to 1. According to the fastener including the nut sealed with the sealing agent containing 10% by mass of wax, the spray coating for rust prevention is not integrated on the sliding surface when the nut is tightened. In addition, wax is fixed on the screw part of this bolt together with the sealing agent, reducing friction with the nut and tightening to the end with the specified tightening torque. It is possible to obtain the axial force required at the time.
（３）ナットの防錆用溶射皮膜がアーク溶射法により形成されたものであり、ボルトの防錆用溶射皮膜がガス溶射法またはプラズマ溶射法により形成されたものであることにより、インパクトレンチなどによりナットを回転させた際の防錆用溶射皮膜の剥離を防止することができるとともに、ボルトのねじ部に形成される防錆用溶射皮膜の表面が滑らかとなり、ナットを締め付けやすくなる。 (3) The antirust spray coating of the nut is formed by the arc spraying method, and the antirust spray coating of the bolt is formed by the gas spraying method or the plasma spraying method. As a result, it is possible to prevent peeling of the rust-preventing sprayed coating when the nut is rotated, and the surface of the rust-preventing sprayed coating formed on the threaded portion of the bolt becomes smooth and the nut can be easily tightened.
図１は本発明の実施の形態における締結具を示す側面図、図２は図１の締結具を分解した状態を示す側面図、図３は図１の結合具を分解して防錆用溶射皮膜形成面を示す説明図である。 1 is a side view showing a fastener according to an embodiment of the present invention, FIG. 2 is a side view showing a state where the fastener of FIG. 1 is disassembled, and FIG. 3 is a thermal spray for rust prevention by disassembling the joint of FIG. It is explanatory drawing which shows a film formation surface.
図１および図２に示すように、本発明の実施の形態における締結具は、被締結体１００としての鋼構造物１０１を添接板１０２，１０３により接続するためのものであって、鋼構造物１０１，添接板１０２，１０３を共締めするためのボルト１と、ナット２と、ワッシャ３，４とから構成される。鋼構造物１０１および添接板１０２，１０３の表面、および、ボルト１を挿入するためのそれぞれのボルト孔１０１ａ，１０２ａ，１０３ａには、図３に示すように、Ａｌ−Ｍｇ合金の防錆用溶射皮膜１０１ｂ，１０２ｂ，１０３ｂが全面に形成されている。 As shown in FIGS. 1 and 2, a fastener in an embodiment of the present invention is for connecting a steel structure 101 as a body to be fastened 100 by means of attachment plates 102 and 103, and has a steel structure. The bolt 101, the nut 2, and the washers 3 and 4 are used to fasten the object 101 and the attachment plates 102 and 103 together. As shown in FIG. 3, the surface of the steel structure 101 and the attachment plates 102 and 103 and the bolt holes 101a, 102a and 103a for inserting the bolts 1 are used for rust prevention of an Al-Mg alloy. Thermal spray coatings 101b, 102b, and 103b are formed on the entire surface.
ボルト１は、鋼構造物１０１および添接板１０２，１０３のボルト孔１０１ａ，１０２ａ，１０３ａに挿入される六角ボルトである。ボルト１は、図３に示すように、頭部１ａ、胴部１ｂおよびねじ部１ｃを含む全面にＡｌ−Ｍｇ合金の防錆用溶射皮膜１０が形成されている。このボルト１の防錆用溶射皮膜１０は、ガス溶射法またはプラズマ溶射法により形成される。 The bolt 1 is a hexagon bolt inserted into the bolt holes 101a, 102a, 103a of the steel structure 101 and the attachment plates 102, 103. As shown in FIG. 3, the bolt 1 has an Al—Mg alloy rust-preventing sprayed coating 10 formed on the entire surface including the head portion 1a, the body portion 1b and the screw portion 1c. The rust-proof spray coating 10 of the bolt 1 is formed by a gas spray method or a plasma spray method.
また、ボルト１は、防錆用溶射皮膜１０の形成後、樹脂系封孔剤を主成分として１〜１０質量％のワックスを含む封孔処理剤により封孔処理される。ワックスの添加量は、樹脂系封孔剤の種類や製品等に応じて１〜１０質量％の範囲内で設定する。本実施形態においては、ワックスとしてパラフィンを使用している。なお、ワックスとしては、動物系や植物系のほか、石油系のパラフィンワックス、マイクロクリスタリンワックス、鉱物系のモンタンワックス、オゾケライト、合成ワックス系のフィッシャートロプシュワックス、ポリエチレンワックス、油脂系合成ワックス、水素化ワックスを使用することも可能である。 Moreover, the bolt 1 is sealed with a sealing agent containing 1 to 10% by weight of a wax having a resin-based sealing agent as a main component after the rust-preventing thermal spray coating 10 is formed. The addition amount of the wax is set within a range of 1 to 10% by mass according to the type of resin-based sealing agent, the product, and the like. In this embodiment, paraffin is used as the wax. In addition to animal and plant-based waxes, petroleum-based paraffin wax, microcrystalline wax, mineral-based montan wax, ozokerite, synthetic wax-based Fischer-Tropsch wax, polyethylene wax, oil-based synthetic wax, hydrogenated It is also possible to use wax.
なお、封孔処理剤は、ボルトを含む施工物に美観等の目的で塗装を施す場合には、１〜５質量％のワックスを含むものを使用する。例えば、樹脂系封孔剤としてのアクリルシリコーン樹脂に対し、１〜５質量％のパラフィンを添加した封孔処理剤を塗布し、乾燥後、ポリウレタン樹脂塗料により塗装を施す。パラフィンの添加は、例えば樹脂系封孔剤をシンナーにて希釈後、パラフィンを添加し、湯煎してゆっくり攪拌混合することにより行う。 In addition, a sealing agent uses 1-5 mass% wax in the case of coating a construction including bolts for the purpose of aesthetics or the like. For example, a sealing agent added with 1 to 5% by mass of paraffin is applied to an acrylic silicone resin as a resin-based sealing agent, dried, and then coated with a polyurethane resin paint. The paraffin is added by, for example, diluting the resin-based sealing agent with thinner, adding paraffin, boiling water, and slowly stirring and mixing.
一方、塗装を施さない場合には、樹脂系封孔剤としてのシリコーンワニスに対し、８〜１０質量％のパラフィンを添加した封孔処理剤を塗布する。なお、樹脂系封孔剤として、エポキシ系樹脂、フェノール系樹脂、シリコーン系樹脂、ビニル樹脂、ポリエステル樹脂、ポリウレタン樹脂、エポキシフェノール樹脂、ポリアミド樹脂やエポキシメラミン樹脂などを使用することも可能である。 On the other hand, when the coating is not performed, a sealing agent to which 8 to 10% by mass of paraffin is added is applied to the silicone varnish as the resin-based sealing agent. In addition, it is also possible to use an epoxy resin, a phenol resin, a silicone resin, a vinyl resin, a polyester resin, a polyurethane resin, an epoxy phenol resin, a polyamide resin, an epoxy melamine resin, or the like as the resin sealant.
ナット２は、鋼構造物１０１および添接板１０２，１０３を挟んでボルト１のねじ部１ｃに締め付けられる座付き六角ナットである。ナット２は、六角二面幅より小径の座面２ｂを有する。ナット２は、図３に示すように、内ねじ部２ａと鋼構造物１０１側の接触面である座面２ｂとを除く全面にＡｌ−Ｍｇ合金の防錆用溶射皮膜２０が形成されている。このナット２の防錆用溶射皮膜２０は、アーク溶射法により形成される。 The nut 2 is a seated hexagon nut that is fastened to the threaded portion 1c of the bolt 1 with the steel structure 101 and the attachment plates 102 and 103 interposed therebetween. The nut 2 has a seat surface 2b having a smaller diameter than the hexagonal two-surface width. As shown in FIG. 3, the nut 2 has a rust-preventing thermal spray coating 20 made of an Al-Mg alloy formed on the entire surface excluding the inner screw portion 2a and the seating surface 2b which is a contact surface on the steel structure 101 side. . The rust-proof spray coating 20 of the nut 2 is formed by an arc spraying method.
ワッシャ３は、ボルト１の頭部１ａと被締結体１００との間に配置されるものであり、ワッシャ４は、ナット２と被締結体１００との間に配置されるものである。ワッシャ３は、図３に示すように、被締結体１００側の接触面３ａおよびボルト孔３ｂの内面を含む全面にＡｌ−Ｍｇ合金の防錆用溶射皮膜３０が形成されている。ワッシャ４は、ボルト孔４ｂの内面を含み、被締結体１００側の接触面４ａを除く全面にＡｌ−Ｍｇ合金の防錆用溶射皮膜４０が形成されている。ワッシャ３，４の防錆用溶射皮膜３０，４０は、アーク溶射法により形成される。 The washer 3 is disposed between the head 1 a of the bolt 1 and the fastened body 100, and the washer 4 is disposed between the nut 2 and the fastened body 100. As shown in FIG. 3, the washer 3 has a rust-proof thermal spray coating 30 of an Al—Mg alloy formed on the entire surface including the contact surface 3 a on the fastened body 100 side and the inner surface of the bolt hole 3 b. The washer 4 includes an inner surface of the bolt hole 4b, and a rust-preventing sprayed coating 40 made of an Al—Mg alloy is formed on the entire surface excluding the contact surface 4a on the fastened body 100 side. The anti-rust spray coatings 30 and 40 of the washers 3 and 4 are formed by arc spraying.
上記構成の締結具では、ナット２の内ねじ部２ａおよび被締結体１００側の接触面である座面２ｂには防錆用溶射皮膜２０が形成されていないので、ナット２の締め付けの際のナット２とワッシャ４との摺動面およびナット２の内ねじ部２ａとボルト１のねじ部１ｃとの摺動面では、防錆用溶射皮膜１０，４０が一方の面にしか存在しない。そのため、ナット２の締め付けの際に、この摺動面でナット２の防錆用溶射皮膜２０とボルト１およびワッシャ４の防錆用溶射皮膜１０，４０とが一体化することがない。 In the fastener having the above configuration, the thermal spray coating 20 for rust prevention is not formed on the inner threaded portion 2a of the nut 2 and the seat surface 2b which is the contact surface on the fastened body 100 side. On the sliding surface between the nut 2 and the washer 4 and the sliding surface between the inner threaded portion 2a of the nut 2 and the threaded portion 1c of the bolt 1, the rust-preventing sprayed coatings 10, 40 are present only on one surface. Therefore, when the nut 2 is tightened, the rust-proof spray coating 20 of the nut 2 and the rust-proof spray coatings 10 and 40 of the bolt 1 and the washer 4 are not integrated with each other on the sliding surface.
また、本実施形態における締結具では、ナット２と被締結体１００との間に配置されるワッシャ４は、ナット２の締め付けの際のワッシャ４と被締結体１００との摺動面となる被締結体１００側の接触面４ａに防錆用溶射皮膜４０が形成されておらず、この摺動面には一方の面にしか防錆用溶射皮膜１０３ｂが存在しない。そのため、ナット２の締め付けの際に、この摺動面でワッシャ４の防錆用溶射皮膜４０と被締結体１００の防錆用溶射皮膜１０３ｂが一体化することがない。 Further, in the fastener in the present embodiment, the washer 4 disposed between the nut 2 and the body to be fastened 100 is a covered surface that serves as a sliding surface between the washer 4 and the body to be fastened 100 when the nut 2 is tightened. The rust preventive spray coating 40 is not formed on the contact surface 4a on the fastening body 100 side, and the rust preventive spray coating 103b exists only on one surface of the sliding surface. For this reason, when the nut 2 is tightened, the rust-proof sprayed coating 40 of the washer 4 and the rust-proof sprayed coating 103 b of the fastened body 100 are not integrated with each other on the sliding surface.
すなわち、この締結具では、ナット２の締め付けの際の摺動面で、ナット２の防錆用溶射皮膜２０とボルト１およびワッシャ４の防錆用溶射皮膜１０，４０とが一体化することがなく、ワッシャ４の防錆用溶射皮膜４０と被締結体１００の防錆用溶射皮膜１０３ｂが一体化することがないため、所定の締め付けトルクで最後まで締め付けることができる。したがって、この締結具では、所定の締め付けトルクで締め付けた際に要求される軸力を得ることが可能である。 That is, in this fastener, the rust-proof spray coating 20 on the nut 2 and the rust-proof spray coatings 10 and 40 on the bolt 1 and the washer 4 are integrated on the sliding surface when the nut 2 is tightened. In addition, since the spray coating 40 for rust prevention of the washer 4 and the spray coating 103b for rust prevention of the fastened body 100 are not integrated, it can be tightened to the end with a predetermined tightening torque. Therefore, with this fastener, it is possible to obtain the axial force required when tightening with a predetermined tightening torque.
また、この締結具では、ボルト１のねじ部１ｃが１〜１０質量％のパラフィンを含む封孔処理剤により封孔処理されており、ボルト１のねじ部１ｃの防錆用溶射皮膜１０の表面には封孔処理剤の主成分である樹脂系封孔剤とともに１〜１０質量％のパラフィンが定着している。そのため、このボルト１のねじ部１ｃに対してナット２を締め付ける際に、ボルト１とナット２との摩擦が低減され、所定の締め付けトルクで締め付けた際に要求された軸力を得ることが可能である。 Moreover, in this fastener, the screw part 1c of the bolt 1 is sealed with a sealing agent containing 1 to 10% by mass of paraffin, and the surface of the thermal spray coating 10 for rust prevention of the screw part 1c of the bolt 1 1 to 10% by mass of paraffin is fixed together with the resin-based sealant which is the main component of the sealant. Therefore, when the nut 2 is tightened against the threaded portion 1c of the bolt 1, the friction between the bolt 1 and the nut 2 is reduced, and the required axial force can be obtained when tightening with a predetermined tightening torque. It is.
なお、本実施形態における締結具では、ボルト１の頭部１ａと被締結体１００との間に配置されるワッシャ３は、被締結体１００側の接触面３ａにも防錆用溶射皮膜３０が形成されているが、通常の被締結体１００の締め付けの際にはボルト１の頭部１ａを固定して、ナット２側を回転させて締め付けるため、この接触面３ａは摺動面とならないため、問題はない。なお、ワッシャ３は、ワッシャ４と同様、接触面３ａを除いて防錆用溶射皮膜３０を形成する構成とすることも可能である。 In addition, in the fastener in this embodiment, the washer 3 arrange | positioned between the head 1a of the volt | bolt 1 and the to-be-fastened body 100 has the thermal spray coating 30 for rust prevention also on the contact surface 3a by the to-be-fastened body 100 side. Although it is formed, since the head 1a of the bolt 1 is fixed and the nut 2 side is rotated and tightened when the normal fastened body 100 is tightened, the contact surface 3a does not become a sliding surface. ,No problem. In addition, the washer 3 can also be set as the structure which forms the thermal spray coating 30 for rust prevention except the contact surface 3a similarly to the washer 4. FIG.
なお、この締結具による締め付け後、表に露出している面はすべて防錆用溶射皮膜１０，２０，３０，４０，１０１ｂ，１０２ｂ，１０３ｂにより保護されている。また、ナット２の防錆用溶射皮膜２０が形成されていない内ねじ部２ａと座面２ｂには、それぞれの対面側の防錆用溶射皮膜４０が密着して一体化するので、この防錆用溶射皮膜４０により保護される。さらに、ワッシャ４の防錆用溶射皮膜４０が形成されていない被締結体１００側の接触面４ａには、対面側の防錆用溶射皮膜１０３ｂが密着して一体化するので、これらの防錆用溶射皮膜１０３ｂにより保護される。 In addition, after the fastening with this fastener, all the surfaces exposed on the surface are protected by the rust-proof sprayed coatings 10, 20, 30, 40, 101b, 102b, 103b. Moreover, since the thermal spray coating 40 for rust prevention of each facing surface is closely_contact | adhered and integrated with the internal thread part 2a and the seat surface 2b in which the rust preventive spray coating 20 of the nut 2 is not formed, this rust prevention The thermal spray coating 40 is protected. Further, since the spray coating 103b for rust prevention on the facing side is in close contact with and integrated with the contact surface 4a on the fastened body 100 side where the spray coating 40 for rust prevention of the washer 4 is not formed, these rust prevention It is protected by the thermal spray coating 103b.
また、本実施形態における締結具では、ナット２に対しては、表面粗さが粗く、密着力が高い皮膜が形成されるアーク溶射法により防錆用溶射皮膜２０が形成され、ボルト１に対しては、表面粗さが細かい皮膜が形成されるガス溶射法またはプラズマ溶射法により防錆用溶射皮膜１０が形成されているため、インパクトレンチなどによりナット２を回転させても、ナット２の六角の角部の防錆用溶射皮膜２０の剥離が防止される。一方、ボルト１のねじ部１ｃにガス溶射法またはプラズマ溶射法により形成された防錆用溶射皮膜１０は表面が滑らかとなるので、ナット２が締め付けやすくなっている。 Moreover, in the fastener in this embodiment, the rust preventive spray coating 20 is formed by arc spraying method in which a coating having a high surface roughness and high adhesion is formed on the nut 2. In this case, since the rust-preventing sprayed coating 10 is formed by a gas spraying method or a plasma spraying method in which a coating with a fine surface roughness is formed, even if the nut 2 is rotated by an impact wrench or the like, the hexagon of the nut 2 Peeling of the rust-preventing thermal spray coating 20 at the corners is prevented. On the other hand, since the surface of the rust-proof spray coating 10 formed on the screw portion 1c of the bolt 1 by gas spraying or plasma spraying is smooth, the nut 2 can be easily tightened.
なお、本実施形態における締結具は、ボルト１、ナット２およびワッシャ３，４により構成されたものであるが、ワッシャ３，４のいずれか一方または両方を省略することも可能である。この場合も同様に、ナット２の締め付けの際のナット２と被締結体１００との摺動面およびナット２の内ねじ部２ａとボルト１のねじ部１ｃとの摺動面では、防錆用溶射皮膜１０，４０が一方の面にしか存在しない。したがって、ナット２の締め付けの際に、この摺動面でナット２の防錆用溶射皮膜２０とボルト１の防錆用溶射皮膜１０とが一体化することがなく、前述と同様に所定の締め付けトルクで最後まで締め付けることができ、所定の締め付けトルクで締め付けた際に要求される軸力を得ることが可能である。なお、ワッシャ４の接触面４ａは防錆用溶射皮膜１０３ｂと一体化しても、ナット２とワッシャ４とが一体化しなければ良いため、ワッシャ４の接触面４ａに防錆用溶射皮膜４０が形成されていても問題はない。 In addition, although the fastener in this embodiment is comprised with the volt | bolt 1, the nut 2, and the washers 3 and 4, it is also possible to abbreviate | omit any one or both of the washers 3 and 4. Similarly in this case, the sliding surface between the nut 2 and the body to be fastened 100 and the sliding surface between the inner threaded portion 2a of the nut 2 and the threaded portion 1c of the bolt 1 when tightening the nut 2 are used for rust prevention. The thermal spray coatings 10, 40 are present only on one side. Therefore, when the nut 2 is tightened, the rust-proof sprayed coating 20 of the nut 2 and the rust-proof sprayed coating 10 of the bolt 1 are not integrated with each other on the sliding surface. It can be tightened to the end with torque, and the axial force required when tightening with a predetermined tightening torque can be obtained. Even if the contact surface 4a of the washer 4 is integrated with the spray coating 103b for rust prevention, the nut 2 and the washer 4 do not have to be integrated, so the spray coating 40 for rust prevention is formed on the contact surface 4a of the washer 4. There is no problem even if it is done.
また、本実施形態における締結具は、被締結体１００と同じＡｌ−Ｍｇ合金により防錆用溶射皮膜１０，２０，３０，４０を形成しているが、被締結体１００の防錆用溶射皮膜材料に応じて亜鉛、アルミニウムまたはこれらの合金により形成することも可能である。 Moreover, although the fastener in this embodiment forms the thermal spray coating 10, 20, 30, 40 for rust prevention with the same Al-Mg alloy as the body 100 to be fastened, the spray coating for rust prevention of the body 100 to be fastened. Depending on the material, it may be formed of zinc, aluminum or an alloy thereof.
〔軸力確認試験〕
上記実施形態における締結具による軸力確認試験を行った。試験は、樹脂系封孔剤に対するパラフィンの混入率を変えた封孔処理剤により封孔処理したボルトを用いて、締め付けトルク値および軸力を測定することにより行った。図４〜図７は、それぞれパラフィンを１．０質量％、２．０質量％、３．０質量％、５．０質量％混入したアクリルシリコーン樹脂（ハイポンＡＺシーラー：日本ペイント株式会社製）により封孔処理したボルトの締め付けトルク値と得られた軸力の測定結果を示している。図８はパラフィンを１０．０質量％混入したシリコーンワニスにより封孔処理したボルトの締め付けトルク値と得られた軸力の測定結果を示している。
[Axial force confirmation test]
An axial force confirmation test using the fastener in the above embodiment was performed. The test was performed by measuring a tightening torque value and an axial force using a bolt sealed with a sealing treatment agent in which the mixing ratio of paraffin to the resin-based sealing agent was changed. 4 to 7 are respectively made of acrylic silicone resin (Hypon AZ sealer: manufactured by Nippon Paint Co., Ltd.) mixed with 1.0% by mass, 2.0% by mass, 3.0% by mass, and 5.0% by mass of paraffin. The tightening torque value of the bolt subjected to the sealing treatment and the measurement result of the obtained axial force are shown. FIG. 8 shows the measurement results of the tightening torque value of the bolt sealed with the silicone varnish mixed with 10.0% by mass of paraffin and the obtained axial force.
図４〜図８に示すように、パラフィンを混入した封孔処理剤により処理したボルトを用いた場合、所定のトルク値による２次締め付けにより目標軸力を達成することができた。また、図９は図４〜図８の結果（平均値）からパラフィンの混合率と封孔剤の違いによるボルトの締め付けトルク値と得られた軸力を比較した図である。図９に示すように、異なる封孔剤を用いた場合でもパラフィンの混合率を変えることで、所定の２次締め付けトルクにより目標軸力を達成できている。 As shown in FIGS. 4 to 8, when a bolt treated with a sealing agent mixed with paraffin was used, the target axial force could be achieved by secondary tightening with a predetermined torque value. FIG. 9 is a diagram comparing bolt tightening torque values according to differences in paraffin mixing ratio and sealing agent and the obtained axial force from the results (average values) of FIGS. As shown in FIG. 9, even when different sealing agents are used, the target axial force can be achieved by a predetermined secondary tightening torque by changing the mixing ratio of paraffin.
〔塗膜と封孔処理剤の密着性試験〕
ワックスの含有率をそれぞれ変えた封孔処理剤と塗膜との密着性試験を行った。試験にはＪＩＳ Ｋ５６００−５−６（塗料一般試験方法 第５部：塗膜の機械的性質、第６節付着性（クロスカット法）で行った。
[Adhesion test between coating film and sealing agent]
An adhesion test between the sealing agent and the coating film with different wax contents was performed. The test was conducted in accordance with JIS K5600-5-6 (coating general test method, part 5: mechanical properties of the coating film, and adhesion at the sixth section (cross cut method)
試験体に溶射厚さ１００μｍのＡｌ−Ｍｇ合金溶射を施し、それぞれ１．０質量％、２．０質量％、５．０質量％、１０．０質量％、１５．０質量％のワックスを添加したアクリルシリコーン樹脂（ハイポンＡＺシーラー：日本ペイント株式会社製）１６０ｇ／ｍ２で塗布し、乾燥後、ポリウレタン樹脂塗料（ハイポンＡＺシーラー仕上げ剤：日本ペイント株式会社製）１４０ｇ／ｍ２塗り重ね、完全乾燥後、クロスカット法の試験を行った。クロスカット法試験では、カッターにより１ｍｍ平行間隔で縦横各６本の切れ込みを入れ、粘着テープによる引き張り試験を行った。 The specimen was sprayed with an Al-Mg alloy having a spraying thickness of 100 μm, and 1.0%, 2.0%, 5.0%, 10.0% and 15.0% wax were added respectively. Acrylic silicone resin (Hypon AZ sealer: manufactured by Nippon Paint Co., Ltd.) 160 g / m 2 , dried, and polyurethane resin paint (Hypon AZ sealer finisher: manufactured by Nippon Paint Co., Ltd.) 140 g / m 2 applied, completely After drying, the cross-cut method was tested. In the cross-cut method test, 6 incisions were made in each length and width with a cutter at a parallel interval of 1 mm, and a tensile test with an adhesive tape was performed.
結果は、１．０質量％、２．０質量％および５．０質量％のワックスを添加した封孔処理剤では、どの格子の目にも剥がれがなく分類０であった。１０．０質量％のワックスを添加した封孔処理剤では、カットの交差部に小さな剥がれが生じ、分類１であった。１５．０質量％のワックスを添加した封孔処理剤では、交差点の剥がれが増え、分類２であった。したがって、塗装を施す場合には、ワックスの添加量は、１．０質量％〜５．０質量％とすることが好ましいことが確認できた。 As a result, in the sealing agent to which 1.0% by mass, 2.0% by mass and 5.0% by mass of wax were added, it was classified as 0 with no peeling of the eyes of any lattice. In the sealing agent to which 10.0% by mass of wax was added, small peeling occurred at the intersection of the cuts, which was classified as Class 1. In the sealing agent to which 15.0% by mass of wax was added, the peeling at the intersection increased, and it was classified as category 2. Therefore, when applying, it has confirmed that it was preferable that the addition amount of a wax shall be 1.0 mass%-5.0 mass%.
本発明の締結具は、防錆用溶射皮膜が形成された被締結体の締結に使用される締結具として有用である。 The fastener of the present invention is useful as a fastener used for fastening a fastened body on which a thermal spray coating for rust prevention is formed.
１ ボルト
１ａ 頭部
１ｂ 胴部
１ｃ ねじ部
２ ナット
２ａ 内ねじ部
２ｂ 座面
３，４ ワッシャ
３ａ，４ａ 接触面
３ｂ，４ｂ ボルト孔
１０，２０，３０，４０ 防錆用溶射皮膜
１００ 被締結体
１０１ 鋼構造物
１０２，１０３ 添接板
１０１ａ，１０２ａ，１０３ａ ボルト孔
１０１ｂ，１０２ｂ，１０３ｂ 防錆用溶射皮膜
DESCRIPTION OF SYMBOLS 1 Bolt 1a Head 1b Body 1c Thread part 2 Nut 2a Inner thread part 2b Seat surface 3, 4 Washer 3a, 4a Contact surface 3b, 4b Bolt hole 10, 20, 30, 40 Anticorrosion sprayed coating 100 Fastened body 101 Steel structure 102, 103 Joint plate 101a, 102a, 103a Bolt hole 101b, 102b, 103b Thermal spray coating for rust prevention
Claims (6)
１〜１０質量％のパラフィンを含む封孔処理剤。 It is a sealing agent for bolts in which a thermal spray coating for rust prevention is formed at least on the screw part,
A sealing agent containing 1 to 10% by mass of paraffin .
頭部およびねじ部を含む全面に防錆用溶射皮膜が形成され、少なくとも前記ねじ部が１〜１０質量％のワックスを含む封孔処理剤により封孔処理されたボルトと、
前記被締結体を挟んで前記ボルトのねじ部に締め付けられるナットであり、内ねじ部と前記被締結体側の接触面とを除く全面に防錆用溶射皮膜が形成されたナットと
を含む締結具。 A fastener used for fastening a fastened body on which a thermal spray coating for rust prevention is formed,
A rust-preventing thermal spray coating is formed on the entire surface including the head portion and the screw portion, and at least the screw portion is sealed with a sealing agent containing 1 to 10% by weight of wax; and
A nut that is fastened to a screw portion of the bolt with the clamped body interposed therebetween, and includes a nut having a rust-proof spray coating formed on the entire surface except the inner screw portion and the contact surface on the clamped body side. .
前記ボルトの防錆用溶射皮膜は、ガス溶射法またはプラズマ溶射法により形成されたものである
ことを特徴とする請求項３記載の締結具。 The rust-preventing thermal spray coating of the nut is formed by arc spraying,
4. The fastener according to claim 3, wherein the rust-proof spray coating of the bolt is formed by a gas spray method or a plasma spray method.
１〜１０質量％のワックスを含む封孔処理剤により封孔処理すること
を含むボルトの製造方法。 Forming a spray coating for rust prevention at least on the threaded part;
A bolt manufacturing method comprising sealing with a sealing agent containing 1 to 10% by weight of wax.
Priority Applications (5)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2010268557A JP5642520B2 (en) | 2010-12-01 | 2010-12-01 | Sealing agent, fastener, bolt and method for producing the same |
| KR1020110126570A KR101970260B1 (en) | 2010-12-01 | 2011-11-30 | Sealing agent, fastener, bolt and manufacturing method therefor |
| TW100144214A TWI531730B (en) | 2010-12-01 | 2011-12-01 | Sealing agent, fastening device, bolt and manufacturing method thereof |
| CN201110393707.XA CN102559140B (en) | 2010-12-01 | 2011-12-01 | Hole sealing processing agent, fastening piece, bolt and manufacture method thereof |
| HK13100410.7A HK1173173A1 (en) | 2010-12-01 | 2013-01-10 | Hole sealing processing agent, fastener, bolt and production method thereof |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2010268557A JP5642520B2 (en) | 2010-12-01 | 2010-12-01 | Sealing agent, fastener, bolt and method for producing the same |
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| JP2012117118A JP2012117118A (en) | 2012-06-21 |
| JP5642520B2 true JP5642520B2 (en) | 2014-12-17 |
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| JP (1) | JP5642520B2 (en) |
| KR (1) | KR101970260B1 (en) |
| CN (1) | CN102559140B (en) |
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| JP6707628B2 (en) * | 2016-04-08 | 2020-06-10 | ウルトラメモリ株式会社 | Semiconductor memory device |
| CN111074263B (en) * | 2019-12-23 | 2022-02-01 | 三达奥克化学股份有限公司 | Environment-friendly sealant used after phosphorization of wear-resistant rail transit parts and preparation method thereof |
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| JPH0341207A (en) * | 1989-07-06 | 1991-02-21 | Nippon Sharyo Seizo Kaisha Ltd | Bolt |
| JP2000120183A (en) * | 1998-10-09 | 2000-04-25 | Miyoshi Nakagawa | Splice part structure such as shape steel and splice plate |
| JP2001170823A (en) * | 1999-12-17 | 2001-06-26 | Nkk Corp | Repairing method for cracked part of metallic structure |
| JP2001304219A (en) * | 2000-04-24 | 2001-10-31 | Yoshio Nakakoshi | Anticorrosive metallic bolt for locking |
| JP2004176901A (en) | 2002-11-26 | 2004-06-24 | Aisan Ind Co Ltd | Bolt |
| JP2004300509A (en) * | 2003-03-31 | 2004-10-28 | Nippon Paint Co Ltd | Sealing treatment method for thermal spray coating |
| CN1706980A (en) * | 2004-06-11 | 2005-12-14 | 洛阳轴承集团有限公司 | Surface insulating layer treating process for roller bearing |
| CN101109403A (en) * | 2006-07-17 | 2008-01-23 | 通用电气公司 | Fasteners coated with boron nitride and means for securing fasteners |
| JP5404183B2 (en) * | 2009-05-28 | 2014-01-29 | 西日本高速道路株式会社 | Fastener and manufacturing method thereof |
| JP5753744B2 (en) * | 2011-07-21 | 2015-07-22 | 株式会社Ｉｈｉインフラシステム | Thermal spray fastener, thermal spray nut and manufacturing method thereof |
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| KR101970260B1 (en) | 2019-04-18 |
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| TWI531730B (en) | 2016-05-01 |
| JP2012117118A (en) | 2012-06-21 |
| TW201231832A (en) | 2012-08-01 |
| HK1173173A1 (en) | 2013-05-10 |
| KR20120060159A (en) | 2012-06-11 |
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