JP2010242208A - Correction method of bonding surface of hot-dip galvanized product - Google Patents

Correction method of bonding surface of hot-dip galvanized product Download PDF

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JP2010242208A
JP2010242208A JP2009112310A JP2009112310A JP2010242208A JP 2010242208 A JP2010242208 A JP 2010242208A JP 2009112310 A JP2009112310 A JP 2009112310A JP 2009112310 A JP2009112310 A JP 2009112310A JP 2010242208 A JP2010242208 A JP 2010242208A
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manhole
dip galvanized
plating
hot
bonding surface
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JP5452071B2 (en
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Atsuo Suehiro
篤夫 末廣
Mitsuo Iwata
光郎 岩田
Yoshifumi Niide
喜文 新出
Yoshitomo Urakawa
善友 浦川
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Koyo Seiko Co Ltd
Kowa Kogyo Co Ltd
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Koyo Seiko Co Ltd
Kowa Kogyo Co Ltd
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  • Coating With Molten Metal (AREA)

Abstract

<P>PROBLEM TO BE SOLVED: To provide a correction method for removing excess plating of the bonding surface of a hot-dip galvanized manhole product fitting the bonding surface exactly, and a manhole to which the method is applied. <P>SOLUTION: Only the surface of the plated layer of the bonding surface of the lid and body of the hot-dip galvanized manhole product is melted by using a heating device such as a gas burner or an electric heater, an excess plating layer is removed using a polishing tool deformable along the shape of the manhole product such as a wire brush while the surface of the plating layer is in a melted state, and the thickness of the plating layer is adjusted. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

本発明は、表面処理では溶融亜鉛めっき又は溶融亜鉛合金めっきに属す。製品ではマンホールに属す。また、要素技術では接合面の修正方法に属す。The present invention belongs to hot dip galvanizing or hot dip zinc alloy plating in the surface treatment. It belongs to the manhole in the product. In elemental technology, it belongs to the method of correcting the joint surface.

溶融亜鉛めっき又は溶融亜鉛−アルミニウム系合金めっき(以下、溶融亜鉛めっきと言う)をしたマンホールの本体とふたは、耐食性に優れているが、本体とふたの接合面のめっき厚さが均一でないために、本体とふたがピッタリ接合しないという問題があった。めっきの厚さは100μm以上あってほぼ一定の厚さであるが、部分的に特に厚い所があるために、ふたに人が乗る度にガタついて音がする、車が踏むとふたが跳ね上がる、水や砂が浸入する、など好ましくない現象が発生する。Manhole body and lid that have been hot dip galvanized or hot dip zinc-aluminum alloy plated (hereinafter referred to as hot dip galvanized) have excellent corrosion resistance, but the plating thickness of the joint surface between the main body and the lid is not uniform. In addition, there is a problem that the main body and the lid are not perfectly joined. The thickness of the plating is 100μm or more and it is almost constant thickness, but because there is a part that is particularly thick, it makes a rattling sound every time someone rides on the lid, the lid jumps up when the car steps on it, Undesirable phenomena such as intrusion of water and sand occur.

従来この対策として、接合面をピッタリ合わせるために次の方法が採用されている。その一つは、接合面を機械加工する方法である。この方法は、めっき皮膜をできる限り残すようにするが、大半は削られて地の鉄が表面に出て来るので、耐食性が損なわれてしまう。もう一つの方法は、本体とふたを組み合わせて強大な荷重をかけてめっき面をなじませる方法である。この方法は、めっきがほぼ均一についている場合には有効であるが、部分的に厚い場合は、ピッタリ合わない。また、本体とふたの組合せが決まってしまい、自由な組合せができないばかりでなく、大きなマンホールには大きな荷重が必要で適用できない場合が生じる。Conventionally, as a countermeasure against this, the following method has been adopted in order to perfectly match the joint surfaces. One of them is a method of machining the joint surface. This method leaves as much of the plating film as possible, but most of it is shaved and the ground iron comes out on the surface, so the corrosion resistance is impaired. The other method is a method in which the plating surface is blended by applying a strong load by combining the main body and the lid. This method is effective when the plating is substantially uniform, but does not fit perfectly when partially thick. In addition, the combination of the main body and the lid is determined, and not only a free combination cannot be made, but also a large manhole requires a large load and cannot be applied.

溶融亜鉛めっきした製品の接合面の余分なめっきを取除き、接合面がピッタリ合う修正方法を得ること、及び、その方法を適用したマンホールを得ること。To remove the excess plating on the joint surface of the hot dip galvanized product, to obtain a correction method that fits the joint surface, and to obtain a manhole to which the method is applied.

溶融亜鉛めっきをした製品の、接合面のめっき層の表面のみを熔かし、製品形状に沿って変形可能な研磨具を用いて余分なめっきを取除く。Only the surface of the plating layer on the joint surface of the hot dip galvanized product is melted, and the excess plating is removed using a polishing tool that can be deformed along the product shape.

接合面のめっき厚さが、下地の加工面に沿って一定の厚さになるので、接合面がピッタリ合う。その結果次のような利点がある。マンホールの大小や接合面の幅に関係なく接合面の修正ができる。また、本体とふたの組合せが自由でよいため、それぞれ単独で修正できるので仕事の流れが良い。社会には、耐食性に優れ接合面がピッタリ合うマンホールを提供できる。Since the plating thickness of the joint surface is a constant thickness along the underlying processed surface, the joint surface is perfect. As a result, there are the following advantages. The joint surface can be corrected regardless of the size of the manhole or the width of the joint surface. In addition, since the combination of the main body and the lid may be free, the work flow is good because each can be corrected independently. For society, it is possible to provide a manhole with excellent corrosion resistance and a perfect joint surface.

実際には、めっき層の表面のみを加熱するためにガスバーナー、電熱器などを用い、めっき層の表面が熔けて光沢が変わったのを確認したら素早くワイヤーブラシ等をかける。めっき層の表面が熔けている時間とワイヤーブラシをかける時間が長いほどめっき厚さは薄くなる。この工程を安定して行ない、めっき厚さのバラツキを小さくするために、必要あれば製品を一定温度に予熱しておく。Actually, a gas burner, an electric heater or the like is used to heat only the surface of the plating layer, and when it is confirmed that the surface of the plating layer has melted and the luster has changed, a wire brush or the like is applied quickly. The longer the time during which the surface of the plating layer is melted and the time during which the wire brush is applied, the thinner the plating thickness. In order to perform this process stably and reduce the variation in plating thickness, if necessary, the product is preheated to a certain temperature.

溶融亜鉛−アルミニウム系合金めっきした呼び径600のマンホールの本体とふたの接合面を次の方法で修正した。マンホールの接合面をガスバーナーで加熱し、めっき層の表面が熔けたのを確認して、素早く回転ワイヤーブラシをかける。この方法で接合面全面を修正した。修正後のめっき厚さは50μm〜80μmで、接合面の全面がこのめっき厚さの範囲で斑状になっていた。本体とふたはピッタリ合った。The joint surface between the main body of the manhole having a nominal diameter of 600 plated with hot dip zinc-aluminum alloy and the lid was corrected by the following method. Heat the joint surface of the manhole with a gas burner, confirm that the surface of the plating layer has melted, and apply a rotating wire brush quickly. The entire joint surface was corrected by this method. The corrected plating thickness was 50 μm to 80 μm, and the entire joining surface was patchy within this plating thickness range. The body and lid fit perfectly.

溶融亜鉛−アルミニウム系合金めっきした呼び径150のマンホールの本体は実施例1と同じ方法で、ふたは炉中加熱し150度に予熱した後で実施例1と同じ方法で修正した。修正後のめっき厚さは本体50μm〜80μm、ふたは40μm〜60μmになり、ふたは予熱した効果でめっき厚さは薄くなったが、接合面のめっき厚さの変化は小さくなった。接合面の全面がこのめっき厚さの範囲で斑状になっていた。本体とふたはピッタリ合った。The main body of the manhole having a nominal diameter of 150, which was plated with hot dip zinc-aluminum alloy, was modified in the same manner as in Example 1, and the lid was heated in a furnace and preheated to 150 degrees and then modified in the same manner as in Example 1. The corrected plating thickness was 50 μm to 80 μm for the main body and 40 μm to 60 μm for the lid, and the plating was thinned by the effect of preheating the lid, but the change in the plating thickness on the joint surface was small. The entire joining surface was patchy within this plating thickness range. The body and lid fit perfectly.

溶融亜鉛めっきしたマンホールの接合面に利用して、耐食性の優れた安全なマンホールを提供できる。A safe manhole with excellent corrosion resistance can be provided by using it for the joint surface of a hot dip galvanized manhole.

Claims (2)

溶融亜鉛めっきした製品の、接合面のめっき層の表面のみを熔かし、製品形状に沿って変形可能な研磨具を用いて余分なめっきを取除くことを特徴とするめっき厚さの修正方法。  A method for correcting the plating thickness, characterized by melting only the surface of the plating layer of the hot-dip galvanized product and removing the excess plating using a polishing tool that can be deformed along the product shape. . 請求項1に記載した方法で製造したことを特徴とするマンホール。  A manhole manufactured by the method according to claim 1.
JP2009112310A 2009-04-09 2009-04-09 Method for correcting joint surface of hot dip galvanized product Active JP5452071B2 (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2013036250A (en) * 2011-08-09 2013-02-21 Nippon Chutetsukan Kk Open-close structure for manhole with anticorrosion film formed, and anticorrosion film formation method

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS52734A (en) * 1975-06-24 1977-01-06 Shirou Nishiuchi Method of producing interior and exterior trim material
JPS62120546U (en) * 1986-01-22 1987-07-31
JP2003001554A (en) * 2001-06-26 2003-01-08 Mitsubishi Heavy Ind Ltd Painted film removing device

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS52734A (en) * 1975-06-24 1977-01-06 Shirou Nishiuchi Method of producing interior and exterior trim material
JPS62120546U (en) * 1986-01-22 1987-07-31
JP2003001554A (en) * 2001-06-26 2003-01-08 Mitsubishi Heavy Ind Ltd Painted film removing device

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2013036250A (en) * 2011-08-09 2013-02-21 Nippon Chutetsukan Kk Open-close structure for manhole with anticorrosion film formed, and anticorrosion film formation method

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