JP2006057114A - Method of combining surface coating and electroplating for hub - Google Patents
Method of combining surface coating and electroplating for hub Download PDFInfo
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- JP2006057114A JP2006057114A JP2004237039A JP2004237039A JP2006057114A JP 2006057114 A JP2006057114 A JP 2006057114A JP 2004237039 A JP2004237039 A JP 2004237039A JP 2004237039 A JP2004237039 A JP 2004237039A JP 2006057114 A JP2006057114 A JP 2006057114A
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Abstract
Description
本発明は車両用ハブの表面塗装と電気メッキを結合させた方法に係り、特に、樹脂ワニス塗装と電気メッキを結合させた方法に関する。 The present invention relates to a method of combining surface coating of a vehicle hub and electroplating, and more particularly to a method of combining resin varnish coating and electroplating.
機動車両は最良の交通工具であり、更に貨物運輸中でも重要な工具である。タイヤは車両の重要な部品であり、それはハブと結合させて使用する必要がある。一般に高級車にはアルミ合金材質のハブが採用され、良好な走行安全性を具備するほか、全体の外観を良くする。現在市販されているアルミ合金ハブは、その表面が通常全て樹脂塗装されるか或いは全てに金属メッキが施され、塗装後に一部に電気メッキを行なう技術はない。 Mobile vehicles are the best transportation tools, and also important tools during cargo transportation. The tire is an important part of the vehicle and it must be used in conjunction with the hub. In general, high-end cars use aluminum alloy hubs, which not only provide good driving safety but also improve the overall appearance. The aluminum alloy hubs currently on the market are usually all coated with resin, or all are metal-plated, and there is no technique for electroplating a part after painting.
本発明の目的は、ハブの表面塗装と電気メッキを結合させた方法を提供することにあり、それは、アルミ合金ハブ表面全体に先ず樹脂塗装を行ない、さらに電気メッキが必要な部分の外表面の塗装樹脂を削り取り、その後、電気メッキで塗装樹脂が削り取られた部分を補填し、これにより塗装層と電気メッキ層を共に具えたアルミ合金ハブを製造する方法である。 An object of the present invention is to provide a method in which the surface coating of the hub and the electroplating are combined, and the resin coating is first performed on the entire surface of the aluminum alloy hub, and further, the outer surface of the portion where electroplating is necessary is applied. In this method, the coating resin is scraped off, and then the portion where the coating resin is scraped off by electroplating is supplemented, whereby an aluminum alloy hub having both the coating layer and the electroplating layer is manufactured.
請求項１の発明は、ハブの表面塗装と電気メッキを結合させた方法において、
ａ．アルミ合金半製品を標準塗装方法で塗装する工程、
ｂ．電気メッキが必要な部分の塗装樹脂を削り取り、ハブのアルミ合金原材を露出させる工程、
ｃ．ハブ半製品のアルミ合金材質が露出した部分につや出しを行なう工程、
ｄ．底層ニッケルと銅の電気メッキ前の前処理を行ない、ハブ表面のつや出し蝋と油汚れを除去する工程、
ｅ．底層ニッケルと銅を電気メッキし、アルミ合金半製品にニッケル層と銅層を形成する工程、
ｆ．銅層をつや出しする工程、
ｇ．多層ニッケルの電気メッキ前の前処理を行ない、ハブ表面のつや出し蝋と油汚れを除去する工程、
ｈ．多層ニッケルを電気メッキし、銅層の上に多層のイオウ含有量の異なるニッケルを形成する工程、
ｉ．クロムを電気メッキして多層ニッケルの上にクロム層を形成する工程、
以上の工程を具えたことを特徴とする、ハブの表面塗装と電気メッキを結合させた方法としている。
請求項２の発明は、請求項１記載のハブの表面塗装と電気メッキを結合させた方法において、ｃの工程中のつや出しでは、先ずスモールガンで角部及び溝等の研磨しにくい部分を先につや出しし、その後、研磨し、ｄの工程中の前処理では、ハブに化学熱浸つや出し蝋除去を行ない、更に超音波つや出し蝋除去、熱水洗、水洗、つや出し蝋擦洗除去し、更に化学熱浸つや出し蝋除去、水洗の後、化学熱浸でハブ表面の油汚れを除去し更に水洗し、ｅの工程中の底層ニッケルと銅の電気メッキは更にアルミ合金半製品上の金属アルミニウムの酸化層の弱腐蝕除去、水洗、アルミ合金半製品上の三酸化二アルミニウム除去、水洗、純水洗、亜鉛堆積、脱亜鉛、水洗、純水洗、亜鉛堆積、水洗、純水洗、底層ニッケル電気メッキ、水洗、酸活性化、純水洗、銅電気メッキ、水洗、銅層鈍化及び熱水洗の工程を具え、ｆの工程中の銅つや出しは、先ず溝或いは角をエアガンで銅つや出しし、研磨し、更に溝、角を電動ガンで銅つや出しし、ｇの工程中の前処理は、ハブ化学熱浸、銅つや出し蝋除去、ハブ角部の銅つや出し蝋擦拭除去、水洗、化学熱浸、銅つや出し蝋除去、熱水洗、水洗、化学熱浸によるハブ表面の油汚れ除去、水洗、銅層表面酸性物質中和、水洗、亜鉛堆積及び水洗の工程を具え、ｈの工程中の多層ニッケル電気メッキでは、先ず銅層上の油汚れを電解除去し、熱水洗、水洗、銅層表面酸活性化、純水洗を行ない、更に半光沢ニッケルメッキ、高含硫ニッケルメッキ、光沢ニッケルメッキ、ニッケルシールメッキ、及び水洗の工程を行ない、ｉの工程中のクロムメッキでは、先ず電解活性化、水洗、多層ニッケル表面のクロム酸活性化、クロム電気メッキ、水洗、水洗及び熱水洗の工程を行なうことを特徴とする、ハブの表面塗装と電気メッキを結合させた方法としている。
請求項３の発明は、請求項１又は請求項２記載のハブの表面塗装と電気メッキを結合させた方法において、ｉの工程の後に、更に、
ｊ．得られたハブをアクセサリと組み合わせて箱に包装する工程、
を具えたことを特徴とする、ハブの表面塗装と電気メッキを結合させた方法としている。
請求項４の発明は、請求項２又は請求項３記載のハブの表面塗装と電気メッキを結合させた方法において、ｅの工程中、底層ニッケルの電気メッキの後に更に底層ニッケル槽液を回収することを特徴とする、ハブの表面塗装と電気メッキを結合させた方法としている。
請求項５の発明は、請求項２又は請求項３記載のハブの表面塗装と電気メッキを結合させた方法において、ｈの工程中、ニッケルシールメッキの後に、ニッケルシール槽液を回収することを特徴とする、ハブの表面塗装と電気メッキを結合させた方法としている。
請求項６の発明は、請求項２又は請求項３記載のハブの表面塗装と電気メッキを結合させた方法において、ｉの工程中、先に補助陽極を取り付けて更に電解活性化し、クロム電気メッキの後に更に電気メッキクロム槽液を回収し、補助陽極を取り外すことを特徴とする、ハブの表面塗装と電気メッキを結合させた方法としている。
The invention of claim 1 is a method in which surface coating of a hub and electroplating are combined.
a. The process of painting aluminum alloy semi-finished products by the standard painting method,
b. The process of scraping the coating resin where electroplating is necessary and exposing the aluminum alloy raw material of the hub,
c. Polishing the exposed parts of the aluminum alloy material of the hub semi-finished product,
d. A process of pre-treatment before electroplating of nickel and copper on the bottom layer to remove hot wax and oil stains on the hub surface,
e. Electroplating the bottom layer nickel and copper to form nickel layer and copper layer on aluminum alloy semi-finished product,
f. The process of polishing the copper layer,
g. A process of pretreatment before electroplating of multi-layer nickel to remove polished wax and oil stains on the hub surface,
h. Electroplating multilayer nickel to form nickel with different multilayer sulfur content on the copper layer;
i. Forming a chromium layer on the multilayer nickel by electroplating chromium;
It is a method in which the surface coating of the hub and electroplating are combined, characterized by comprising the above steps.
The invention according to claim 2 is the method of combining the surface coating of the hub with electroplating according to claim 1, and in the polishing in the process c, first, the parts such as corners and grooves that are difficult to polish are firstly polished with a small gun. In the pre-treatment in step d), chemical hot dipping and removal of wax are performed on the hub, ultrasonic polishing removal, hot water washing, water washing, polishing wax scrubbing removal, and further chemical heat treatment are performed. After dipping and removing wax, washing with water, removing oil stains on the hub surface by chemical thermal immersion and further washing with water, electroplating of the bottom layer nickel and copper during the process of e is a metal aluminum oxide layer on the aluminum alloy semi-finished product Weak corrosion removal, water washing, aluminum alloy semi-finished aluminum oxide removal, water washing, pure water washing, zinc deposition, dezincing, water washing, pure water washing, zinc deposition, water washing, pure water washing, bottom nickel electroplating, water washing, Acid activation, It includes the steps of water washing, copper electroplating, water washing, copper layer blunting and hot water washing, and the copper polishing in the process of f is first polished and polished with an air gun at the grooves or corners, and further, the grooves and corners with an electric gun. The pre-treatment in the process of copper polishing and g is: hub chemical thermal immersion, copper polishing wax removal, hub corner copper polishing wax scrub removal, water washing, chemical thermal immersion, copper polishing wax removal, hot water washing, water washing, chemical It comprises the steps of removing oil stains on the hub surface by heat immersion, washing with water, neutralizing the copper layer surface acidic substances, washing with water, depositing zinc and washing with water. In multilayer nickel electroplating during step h, the oil stain on the copper layer is first removed. Electrolytic removal, hot water washing, water washing, copper layer surface acid activation, pure water washing, semi-bright nickel plating, high sulfur-containing nickel plating, bright nickel plating, nickel seal plating, and water washing steps, i. In chrome plating during the process First of all, it is a method that combines the surface coating of the hub and electroplating, characterized by performing electrolytic activation, water washing, chromic acid activation of the surface of the multilayer nickel, chromium electroplating, water washing, water washing and hot water washing. .
According to a third aspect of the present invention, in the method of combining the surface coating of the hub with the electroplating according to the first or second aspect, after the step i,
j. The process of packaging the obtained hub in a box in combination with accessories,
In this method, the surface coating of the hub and electroplating are combined.
According to a fourth aspect of the present invention, in the method of combining the surface coating of the hub with the electroplating according to the second or third aspect, the bottom layer nickel bath solution is further recovered after the bottom layer nickel electroplating during the step e. In this method, the surface coating of the hub and electroplating are combined.
According to a fifth aspect of the present invention, in the method of combining the surface coating of the hub with the electroplating according to the second or third aspect, the nickel seal bath liquid is recovered after the nickel seal plating during the step h. The feature is a method that combines surface coating of the hub and electroplating.
According to a sixth aspect of the present invention, in the method of combining the surface coating of the hub with the electroplating according to the second or third aspect, during the step i, an auxiliary anode is first attached and further electrolytically activated, and the chrome electroplating is performed. After that, the electroplating chromium bath liquid is further collected, and the auxiliary anode is removed, and the surface coating of the hub and electroplating are combined.
本発明は、ハブの表面塗装と電気メッキを結合させた方法を提供し、それは、アルミ合金ハブ表面全体に先ず樹脂塗装を行ない、さらに電気メッキが必要な部分の外表面の塗装樹脂を削り取り、その後、電気メッキで塗装樹脂が削り取られた部分を補填し、これにより塗装層と電気メッキ層を共に具えたアルミ合金ハブを製造する方法である。 The present invention provides a method of combining the surface coating of the hub and electroplating, which first performs resin coating on the entire surface of the aluminum alloy hub, and further scrapes the coating resin on the outer surface of the portion requiring electroplating, Thereafter, the portion where the coating resin is scraped off by electroplating is compensated, and thereby an aluminum alloy hub having both the coating layer and the electroplating layer is manufactured.
本発明の目的は以下の技術手段により実現される。即ち本発明のハブの表面塗装と電気メッキを結合させた方法は以下の工程を具えている：
ａ．アルミ合金半製品を標準塗装方法で塗装する
ｂ．電気メッキが必要な部分の塗装樹脂を削り取り、ハブのアルミ合金原材を露出させる
ｃ．ハブ半製品のアルミ合金材質が露出した部分につや出しを行なう
ｄ．底層ニッケルと銅の電気メッキ前の前処理を行ない、ハブ表面のつや出し蝋と油汚れを除去する
ｅ．底層ニッケルと銅を電気メッキし、アルミ合金半製品にニッケル層と銅層を形成する
ｆ．銅層をつや出しする
ｇ．多層ニッケルの電気メッキ前の前処理を行ない、ハブ表面のつや出し蝋と油汚れを除去する
ｈ．多層ニッケルを電気メッキし、銅層の上に多層のイオウ含有量の異なるニッケルを形成する
ｉ．クロムを電気メッキして多層ニッケルの上にクロム層を形成する。
The object of the present invention is realized by the following technical means. That is, the method of combining the surface coating of the hub and electroplating of the present invention comprises the following steps:
a. Paint aluminum alloy semi-finished product by standard painting method b. Scrape off the part of the coating resin that requires electroplating to expose the aluminum alloy raw material of the hub c. Polish the exposed part of the aluminum alloy material of the semifinished hub d. Pre-treatment before electroplating of bottom layer nickel and copper to remove polished wax and oil stains on hub surface e. Electroplating bottom layer nickel and copper to form nickel layer and copper layer on aluminum alloy semi-finished product f. Polish the copper layer g. Pre-treatment before electroplating of multi-layer nickel to remove polished wax and oil stains on the hub surface h. Electroplating multilayer nickel to form multilayer nickel with different sulfur content on the copper layer i. Chromium is electroplated to form a chromium layer on the multilayer nickel.
更に、本発明の方法はモールド技術で製造したアルミ合金ハブ半製品を、以下の工程で加工して良好に塗装したハブを得る。
１．ハブ表面の凹凸及びバリの部分をサンドペーパーで研磨して平らに整える。その後、鋼砂を秒数を設定して噴砂し、ハブ表面の砂孔を減らし、その後、原子灰と硬化剤を一定重量比で調合し、得られた物質でハブ表面、側面の孔を補填し、大きな砂孔及び凹孔を除去する。
２．上述のように補填した物質を乾燥させた後、研磨機とサンドペーパー等の工具で補填痕を除去し、その後、更に前処理洗浄を行なう。この前処理洗浄では、常温下で、ハブを摂氏３０度から４０度の温水で洗浄し、脱脂（油除去、不純物除去）し、清水で洗浄し、皮膜を形成し（ハブ表面を一層の皮膜で被覆し、基材を保護し、塗装ベース付着力を増す）、純水で洗浄する工程を行なう。前処理洗浄の後、水痕を送風乾燥し、更に高温ベークし、表面不純物を除去する。ベーク後に塗装ベースを吹きつけてハブ表面に付着させ、ハブ表面の滑らかさを増し、塗料の付着力を増す。
３．ハブ研磨を行ない、異なる番号のサンドペーパーと研磨機を用いてハブ表面に残留するバリ、顆粒、不純物等を除去して平らに磨き、ハブ表面を滑らかとし、砂痕を無くす。
４．清水、純水を用いてハブ表面に溜まった粉塵をきれいにし、ハブ表面の水痕を擦拭するか送風機で送風して除去し、その後、塗料を必要な色に調製し、塗装条件を調製してハブ上にベースコートをスプレー塗装してから、予熱後に調製した塗料をスプレー塗装し、色彩を均一としてから一定の温度と時間でベークし、塗料をハブに付着させて脱落させず、最後に透明ポリアクリル酸樹脂をスプレー塗装して更に高温ベークして塗料を保護し、その酸化を防止する。
Further, according to the method of the present invention, a semi-finished aluminum alloy hub product manufactured by a molding technique is processed through the following steps to obtain a well-coated hub.
1. Polish the unevenness and burrs on the hub surface with sandpaper to make it flat. After that, steel sand is blown for a set number of seconds to reduce the sand holes on the hub surface, and then the atomic ash and hardener are blended at a constant weight ratio, and the resulting material fills the hub surface and side holes. And remove large sand holes and concave holes.
2. After the material compensated as described above is dried, the compensation marks are removed with a polishing machine and a tool such as sandpaper, and then pretreatment cleaning is further performed. In this pretreatment cleaning, the hub is washed with warm water of 30 to 40 degrees Celsius at room temperature, degreased (oil removal, impurity removal), washed with fresh water, and a film is formed (the hub surface is further coated with a film). Coating, protecting the substrate and increasing the adhesion of the coating base), and washing with pure water. After the pretreatment cleaning, the water marks are blown and dried, and further baked at a high temperature to remove surface impurities. After baking, the paint base is sprayed to adhere to the hub surface, increasing the smoothness of the hub surface and increasing the adhesion of the paint.
3. Polish the hub and polish it flat by removing burrs, granules, impurities, etc. remaining on the hub surface using sand paper and sanding machine of different numbers, smooth the hub surface and eliminate sand marks.
4). Clean the dust accumulated on the hub surface with clean water and pure water, wipe off the water marks on the hub surface or blow off with a blower, and then prepare the paint to the required color and adjust the coating conditions. After spraying the base coat on the hub, spray the paint prepared after preheating, make the color uniform, bake at a certain temperature and time, let the paint adhere to the hub and not fall off, finally clear Spray coating polyacrylic acid resin and baking at higher temperature to protect the paint and prevent its oxidation.
上述の加工工程は塗装の標準工程に属する。ゆえに得られるものは市販の塗装ハブである。以下の工程は、本発明の重点である。即ち、得られたハブの電気メッキが必要な部分を削り、その部分の塗装樹脂を除去してアルミ合金原材を露出させ、その後、電気メッキ方法で金属メッキ層をアルミ合金原材表面に電気メッキし、塗装樹脂と金属メッキ層の色の違いにより、得られるハブに二種類の異なる材質、異なる色の表面を具備させる。 The above processing steps belong to the standard coating process. The result is a commercially available paint hub. The following steps are the focus of the present invention. That is, a portion of the obtained hub that requires electroplating is shaved, the coating resin in that portion is removed to expose the aluminum alloy raw material, and then the metal plating layer is electrically applied to the aluminum alloy raw material surface by an electroplating method. Depending on the color difference between the coating resin and the metal plating layer, the resulting hub is provided with two different materials and different colored surfaces.
電気メッキの方法は以下の工程を包含する：
１．すでに磨いて塗装したハブ半製品のアルミ合金材質を露出させた部分につや出しを行なう：通常つや出しにより、金属を電気メッキする部分（即ちアルミ合金半製品）を細緻緊密とし、空隙率を小さくする。先ず、スモールガンで、角部及び溝等研磨しにくい部分を先につや出しし、その後、研磨し、平らに整え、つやを出すことで、電気メッキ層の光沢を増し、細緻とする。
２．底層ニッケルと銅を電気メッキする前の前処理を行なう：蝋除去、油除去を行ない、底層ニッケルと銅の付着力を増す。好ましくは次の工程で行なう。化学熱浸除蝋→超音波除蝋→熱水洗→水洗→擦洗→化学熱浸除油→水洗。そのうち、化学熱浸除蝋は、化学けん化作用を利用してつや出し蝋を除去する。超音波除蝋は超音波を使用し高周波振動を利用しつや出し蝋を除去する。擦洗は手作業方式でハブの角部のつや出し蝋を除去する。化学熱浸除油は化学乳化作用を利用しハブ表面の油汚れを除去する。
３．底層ニッケルと銅の電気メッキを行なう：アルミ合金半製品に底層ニッケルと銅を電気メッキし、銅つや出し作業を行なえるようにする。好ましくは以下の工程で行なう。弱腐蝕→水洗→除垢→水洗→純水洗→亜鉛堆積→脱亜鉛→水洗→純水洗→亜鉛堆積→水洗→純水洗→底層ニッケル電気メッキ→水洗→酸活性化→純水洗→銅電気メッキ→水洗→鈍化→熱水洗。更に底層ニッケル電気メッキの後に底層ニッケル槽液を回収し更に水洗する工程を有し得る。そのうち、弱腐蝕はアルカリ性溶液を利用してアルミ合金半製品上のアルミニウムの酸化層を除去する。除垢は酸性溶液を利用しアルミ合金半製品上の三酸化二アルミニウムを除去する。純水洗は不純物の沈亜鉛槽、ニッケル電気メッキ槽或いは銅電気メッキ槽への進入を防止する。亜鉛堆積は化学置換反応を利用しハブ上に一槽のアルミニウムを堆積させる。酸性溶液を利用し脱亜鉛し即ち亜鉛槽を除去してハブ表面の三酸化二アルミニウム酸化槽を無くす。第２次亜鉛堆積により電気メッキ層の結合力を高める。底層ニッケル電気メッキによりアルミニウム層を保護し、銅つや出し時にアルミ層が削られるのを防止する。ニッケル槽液回収によりニッケル槽液を節約でき、また汚染を防止できる。底層ニッケルの酸活性化により、底層ニッケルと銅槽の結合力を更に強化する。銅は良好な延伸性を有するため、銅つや出し時の押圧によりピンホールを減らすことができる。銅は空気中の酸素と結合しやすく、酸化して緑青を生成しやすいため、鈍化処理が必要である。熱水洗により銅層を清潔とし、銅つや出し作業に供する。
４．銅つや出しを行なう：銅層のつや出しにより多層ニッケルの電気メッキに供し、光沢のあるニッケル層をメッキできるようにする。好ましくは以下の工程で行なう。即ち、エアガンで銅をつや出し→研磨→電動ガンで銅つや出し。そのうちエアガンは水、角部の銅つや出しに使用する。研磨により平らに整え、光沢を出す。電動ガンは更に溝、角部に対する銅のつや出しを行なう。
５．多層ニッケル電気メッキの前の前処理を行なう：除油、除蝋を行ない、銅層と多層ニッケルの付着力を増す。好ましくは以下の工程で行なう。化学熱浸除蝋→擦洗→水洗→化学熱浸除蝋→熱水洗→水洗→化学熱浸除油→水洗→中和→水洗→亜鉛堆積→水洗。そのうち、化学熱浸除蝋は化学けん化作用を利用して銅つや出し蝋を除去する。擦洗は手作業方式でハブ角部を擦洗し、銅つや出し蝋を除去する。化学熱浸除油は化学乳化作用を利用してハブ表面の油汚れを除去する。中和は銅層表面の酸性物質を中和して亜鉛堆積槽のｐＨが低くなりすぎるのを防止し、亜鉛堆積を行なえるようにする。亜鉛堆積は、銅つや出しにより開いた微小な空隙に亜鉛を堆積させて多層ニッケルの電気メッキに供する。
６．多層ニッケルの電気メッキ： 異なるイオウ含有量の多層のニッケル層を電気メッキし、電位差を形成し、腐蝕時間を延長する。好ましくは以下の工程で行なう。電解除油→熱水洗→水洗→酸活性化→純水洗→半光沢ニッケルをメッキ→高含硫ニッケルをメッキ→光沢ニッケルをメッキ→ニッケルシールメッキ→水洗。更にニッケルシールメッキの後にニッケルシール槽液を回収し更に水洗工程を行ない得る。そのうち、電解除油は陰極に通電して水素ガスを発生させて油汚れと不順物を剥離させ、銅層上の油汚れを除去し、多層ニッケルの電気メッキに供する。酸活性化は銅層表面を活性化して銅層と多層ニッケルの結合力を増す。純水洗は不純物の半光沢ニッケル槽への進入を防止する。半光沢ニッケルメッキ、高含硫ニッケルメッキ、光沢ニッケルメッキ、ニッケルシールメッキはイオウ含有量の異なるニッケルを利用して電位差を形成し、腐蝕時間を延長し、光沢ニッケルを基準位とし、半光沢ニッケルと光沢ニッケルの電位差は１２０−１５０ｍＶとし、高含硫ニッケルと光沢ニッケルの電位差は１３−２５ｍＶとし、ニッケルシールと光沢ニッケルの電位差は１０−２０ｍＶとする。ニッケルシール槽液回収によりその液の節約と汚染防止を行なう。四槽の電気メッキニッケル槽のイオウ含有量の違いを利用し、電位差を形成し、腐蝕防止の効果を達成する。
７．電気クロムメッキ：多層ニッケル表面に防護クロム層をメッキする。好ましくは以下の工程で行なう。電解活性化→水洗→クロム酸活性化→電気クロムメッキ→水洗→還元→水洗→熱水洗、さらに先に補助陽極を取り付けてから電解活性化を行ない得る。また電気クロムメッキの後に電気クロムメッキ槽液を回収し、その後、水洗し、最後に熱水洗した後に更に補助電極を取り外す。そのうち、補助陽極は電気クロムメッキ電流効率が非常に低いため（約８−１３％）、補助陽極を取り付けることでベース電流領域の電流を強化でき、電気クロムメッキに有利とすることができる。クロム酸活性化により多層ニッケルを活性化してニッケル層とクロム層に良好な結合力を具備させる。電気クロムメッキにより良好な光沢、防護及び装飾性を有するメッキ層を得られる。電気クロムメッキ槽溶液を回収することで、電気クロムメッキ槽液を節約し並びに汚染を防止できる。還元により電気メッキ液中の六価クロムを三価クロムに還元し、電気メッキ排水を環境保護要求に符合させることができ、並びに電気メッキクロム層表面に吸着した不安定な六価クロムを還元して三価クロムとして、メッキクロム層を安定させることができる。クロム層は最上金属層とされ、これは、青色を帯びた銀白色金属とされ、電極電位が非常に低いが非常に強力な鈍化性能を具え、大気中で非常に急速に鈍化し、貴金属の性質を表示し、長期にその光沢を保持し、良好な防護と装飾性を有するメッキ金属であるためである。
The electroplating method includes the following steps:
1. Polishing the part of the semifinished hub product that has already been polished and exposed to the aluminum alloy material: Usually, the part that is electroplated with metal (ie, the semifinished aluminum alloy product) is made fine and tight, and the porosity is reduced. First, with a small gun, the hard portions such as corners and grooves are polished first, then polished, flattened, and polished to increase the gloss of the electroplated layer and make it fine.
2. Pre-treatment before electroplating bottom layer nickel and copper: remove wax, remove oil and increase adhesion between bottom layer nickel and copper. Preferably, the following steps are performed. Chemical heat dewaxing wax → ultrasonic dewaxing → hot water washing → water washing → rubbing → chemical heat soaking oil → water washing. Among them, the chemical heat erosion wax uses a chemical saponification action to remove the polished wax. Ultrasonic dewaxing uses ultrasonic waves to remove hot wax using high frequency vibration. Rubbing is a manual method that removes the polished wax from the corners of the hub. Chemical heat soaking oil uses chemical emulsification to remove oil stains on the hub surface.
3. Electroplating the bottom layer nickel and copper: Electroplating the bottom layer nickel and copper on the semi-finished aluminum alloy so that the copper can be polished. Preferably, the following steps are performed. Weak corrosion → Water washing → Decontamination → Water washing → Pure water washing → Zinc deposition → Dezincing → Water washing → Pure water washing → Zinc deposition → Water washing → Pure water washing → Bottom layer nickel electroplating → Water washing → Acid activation → Pure water washing → Copper electroplating → Rinse → blunt → hot water. Further, after the bottom layer nickel electroplating, a step of recovering the bottom layer nickel bath solution and further washing with water may be included. Of these, mild corrosion uses an alkaline solution to remove the aluminum oxide layer on the aluminum alloy semi-finished product. Decontamination uses an acid solution to remove dialuminum trioxide on aluminum alloy semi-finished products. Pure water washing prevents impurities from entering the zinc precipitation tank, nickel electroplating tank or copper electroplating tank. Zinc deposition uses a chemical substitution reaction to deposit a tank of aluminum on the hub. Dezincing using an acidic solution, that is, removing the zinc bath to eliminate the dialuminum trioxide oxidation bath on the hub surface. The bonding strength of the electroplating layer is increased by secondary zinc deposition. The bottom layer nickel electroplating protects the aluminum layer and prevents the aluminum layer from being scraped during copper polishing. Nickel bath solution recovery saves nickel bath solution and prevents contamination. The acid activation of the bottom layer nickel further strengthens the bonding force between the bottom layer nickel and the copper bath. Since copper has good stretchability, pinholes can be reduced by pressing during copper polishing. Since copper easily binds to oxygen in the air and is likely to oxidize to produce patina, a slowing treatment is necessary. The copper layer is cleaned by hot water washing and used for copper polishing work.
4). Perform copper polishing: The copper layer is subjected to electroplating of multilayer nickel by plating so that a shiny nickel layer can be plated. Preferably, the following steps are performed. In other words, copper is polished with an air gun → polished → copper is polished with an electric gun. Of these, the air gun is used for water and copper polishing of corners. Gently flatten by polishing. The electric gun further polishes the copper in the grooves and corners.
5. Pre-treatment prior to multilayer nickel electroplating: oil removal and dewaxing to increase adhesion between copper layer and multilayer nickel. Preferably, the following steps are performed. Chemical heat erosion wax → rubbing → water washing → chemical heat erosion wax → hot water washing → water washing → chemical heat erosion oil → water washing → neutralization → water washing → zinc deposition → water washing. Among them, chemical heat erosion wax uses a chemical saponification action to remove copper polished wax. In the scrubbing, the hub corners are scrubbed by a manual method to remove the copper polishing wax. Chemical heat soaking oil uses chemical emulsification to remove oil stains on the hub surface. Neutralization neutralizes the acidic substance on the surface of the copper layer to prevent the pH of the zinc deposition tank from becoming too low, so that zinc deposition can be performed. In the zinc deposition, zinc is deposited in a minute gap opened by copper polishing and used for electroplating of multilayer nickel.
6). Multi-layer nickel electroplating: Multi-layer nickel layers with different sulfur content are electroplated to form a potential difference and extend the corrosion time. Preferably, the following steps are performed. Electrolytic release oil → Hot water washing → Water washing → Acid activation → Pure water washing → Semi-bright nickel plating → High sulfur nickel plating → Bright nickel plating → Nickel seal plating → Water washing. Further, after the nickel seal plating, the nickel seal bath liquid can be collected and further washed with water. Among them, the electricity release oil is energized to the cathode to generate hydrogen gas to peel off oil stains and irregular materials, remove the oil stains on the copper layer, and use for electroplating of multilayer nickel. Acid activation activates the surface of the copper layer to increase the bond strength between the copper layer and the multilayer nickel. Pure water washing prevents impurities from entering the semi-bright nickel bath. Semi-bright nickel plating, high-sulfur nickel plating, bright nickel plating, nickel seal plating use nickel with different sulfur content to form a potential difference, extend the corrosion time, make bright nickel the standard, semi-bright nickel And the bright nickel have a potential difference of 120-150 mV, the high sulfur-containing nickel and the bright nickel have a potential difference of 13-25 mV, and the nickel seal and the bright nickel have a potential difference of 10-20 mV. The nickel seal tank liquid recovery will save the liquid and prevent contamination. Utilizing the difference in sulfur content of the four electroplated nickel tanks, a potential difference is formed to achieve the effect of preventing corrosion.
7). Electrochrome plating: plating a protective chrome layer on the surface of multilayer nickel. Preferably, the following steps are performed. Electrolytic activation-> water washing-> chromic acid activation-> electrochromic plating-> water washing->reduction-> water washing-> hot water washing. Further, after the electrochromic plating, the electrochromic bath solution is recovered, then washed with water, and finally the hot water is washed, and then the auxiliary electrode is further removed. Among them, since the auxiliary anode has a very low electrochromic current efficiency (about 8-13%), the auxiliary anode can be used to enhance the current in the base current region, which is advantageous for electrochrome plating. Multi-layer nickel is activated by chromic acid activation to provide good bonding strength between the nickel layer and the chromium layer. A plated layer having good gloss, protection and decorativeness can be obtained by electrochrome plating. By collecting the electrochromic bath solution, the electrochromic bath solution can be saved and contamination can be prevented. By reducing the hexavalent chromium in the electroplating solution to trivalent chromium, the electroplating waste water can meet the environmental protection requirements, and the unstable hexavalent chromium adsorbed on the surface of the electroplated chromium layer can be reduced. As a trivalent chromium, the plated chromium layer can be stabilized. The chrome layer is the top metal layer, which is a silvery white metal with a blue color, has a very low electrode potential but a very strong blunting performance, blunts very rapidly in the atmosphere, This is because it is a plated metal that displays properties, retains its luster for a long time, and has good protection and decoration.
上述の全ての工程が完成した後、本発明のハブが得られる。更に該ハブに対して包装を行ない、即ちアクセサリと合わせて包装する。 After all the above steps are completed, the hub of the present invention is obtained. Further, the hub is packaged, that is, packaged together with the accessory.
上述により得られるハブは、その電気メッキ層が良好な防護性能を具え、その主要な表現は以下のとおりである。即ち、電気メッキ層と基体金属の結合が強固で、付着力が強くい。また、メッキ層が完全で、結晶が細緻で緊密であり、空隙率が低い。また、メッキ層が良好な物理、化学及び機械性能を有する。さらに、メッキ層の厚さが標準規定に符合し、且つメッキ層が均一である。 As for the hub obtained by the above, the electroplating layer has a good protective performance, and the main expression is as follows. That is, the bond between the electroplating layer and the base metal is strong and the adhesion is strong. Moreover, the plating layer is perfect, the crystal is fine and close, and the porosity is low. Also, the plating layer has good physical, chemical and mechanical performance. Furthermore, the thickness of the plating layer conforms to the standard specification, and the plating layer is uniform.
本発明により得られるハブは、塗装樹脂と金属メッキ層が組み合わされた外表色を有し、樹脂塗装のカラフルな色彩にメッキ層の金属の光沢が組み合わされ、美観を有する。且つメッキ層金属と塗装樹脂の結合が非常に緊密で、良好な防護効果を有する。 The hub obtained by the present invention has an outer surface color in which a coating resin and a metal plating layer are combined, and the colorful luster of the resin coating is combined with the metallic luster of the plating layer to have an aesthetic appearance. In addition, the bond between the plating layer metal and the coating resin is very close, and has a good protective effect.
特に、ハブの前後表面の平坦な部分を上述の電気メッキ方法により処理し、ハブのその他の部分の塗装処理を保持する時、ハブの外観は非常に美しくなる。 In particular, when the flat portions of the front and rear surfaces of the hub are processed by the above-described electroplating method and the coating processing of the other portions of the hub is maintained, the appearance of the hub becomes very beautiful.
電気メッキの費用は塗装費用より高く、従来の電気メッキ後に塗装して製造することで塗装層とメッキ層を共に具備するようにしたハブと比較すると、本発明の方法を採用すると、大幅なコストダウンが達成される。 The cost of electroplating is higher than the cost of painting, and the cost of using the method of the present invention is significant compared to a conventional hub that has been painted and manufactured after electroplating and has both a coating layer and a plating layer. Down is achieved.
ハブのアルミ合金製半製品の全体を、標準塗装方式で塗装する。即ち、１．先ずハブ表面の凹凸及びバリの部分をサンドペーパーで研磨して平坦となし、その後、鋼砂を用いて９秒間噴砂してハブ表面の砂孔を減らす。その後、原子灰（原子灰は急速硬化する一種の物質である）と硬化剤を１００：２の重量比で調製し、ハブ表面、側面の孔を補填する物質として用い、比較的大きな砂孔及び凹孔を除去する。２．上述の補填物質を乾燥させた後、研磨機とサンペーパー等の工具を用いて補填痕跡を除去し、その後、更に前処理洗浄を行なう。即ち、常温下で、ハブを、摂氏３０度から４０度の温水を用いて洗浄し、その後、脱脂（除油、不純物除）、清水洗浄、皮膜保護、純水等の洗浄を行なう。洗浄後に、水後を送風乾燥し、ベークして表面の不純物を除去する。ベーク後にベースパウダー吹きつけを行ない、摂氏１９８度下でベークし、灰粉（ベースパウダー）をハブ表面に付着させ、ハブ表面の滑らかさを増し、塗装樹脂の付着力を増す。３．ハブを研磨し、異なる番号のサンドペーパーと研磨機を用いてハブ表面に残留するバリ、顆粒、不純物等を磨いて平らとし、ハブ表面を滑らかにし、砂痕を無くす。４．清水、純水を用いてハブ表面に堆積した粉塵を洗浄し、ハブ表面の水痕を擦拭してきれいにするか送風機で送風して乾燥させ、その後、必要な色に応じて塗装樹脂を調製し、吹きつけ条件を調製し、ハブ上にベース樹脂を塗装して予熱した後、更に塗装樹脂を吹きつけ、色彩を均一とした後に摂氏１７０度で４０分間ベークし、塗装樹脂をハブに付着させ脱落防止し、最後にコート樹脂を吹きつけてから摂氏１５０度でベークし、塗装樹脂を保護してその酸化を防止する。５．ハブの電気メッキを必要とする部分（ハブ前後表面の平坦部分）を回転研削し、その部分の塗装樹脂を除去してアルミ合金原材を露出させ、前後表面の凹部分を含むその他の部分の塗装は保持する。その後、電気メッキ方法を用いてメッキ金属をアルミ合金原材表面にメッキするのに供する。６．上述のすでに塗装樹脂を回転研削し、アルミ合金材質を露出させた部分に対してつや出しを行なう。即ち、先ずスモールガンで角及び溝等の研磨しにくい部分を先につや出しし、その後、研磨する。７．底層ニッケルと銅の電気メッキの前処理を行なう。即ち以下の工程で行なう。ハブを安美特薬水社のＢＣＲ試薬を用いて化学熱浸つや出し蝋除去を行なう→超音波つや出し蝋除去→熱水洗→水洗→安美特薬水社の１５２試薬を用いて化学熱浸でハブ表面の油汚れを除去する→水洗。８．底層ニッケルと銅を電気メッキする。即ち以下の工程で行なう。ハブを安美特薬水社のＵ１５２試薬を用いてハブアルミ合金半製品上の金属アルミニウムの酸化層を弱腐蝕し除去する→水洗→硝酸、リン酸、水素フッ素酸と安美特薬水社の除垢剤Ｓを調合してなる試薬を用いてアルミ合金半製品上の三酸化二アルミニウムを除去する→水洗→純水洗→安美特薬水社のＷ−ＢとＷ−Ｅ試薬を利用し亜鉛を置換しハブ上に一層の亜鉛を堆積させる→５０％硝酸を配合してなる溶液を利用して脱亜鉛すると共にハブ表面の三酸化二アルミニウム層を除去する→水洗→純水洗→再亜鉛堆積→水洗→純水洗→底層ニッケル電気メッキ→水洗→ハブ表面酸活性化ハブ→純水洗→銅電気メッキ→水洗→クエン酸を用いて銅層電気メッキ→熱水洗。ニッケル電気メッキ後にニッケル槽液を回収し、そのの考案は、更にハブを水洗する。９．銅つや出し。以下の工程で行なう。溝、角に対してエアガンで銅つや出し→研磨→溝、角に対して電動ガンで銅つや出し。１０．多層ニッケル電気メッキの前処理を行なう。以下の工程で行なう。即ち、三孚薬水社のＳＦ−６０１試薬を利用し化学熱浸してつや出し蝋を除去→水洗→三孚薬水社のＳＦ６０１試薬を用いて化学熱浸しハブ表面の油汚れを除去→水洗→銅層表面の酸性物質を中和→水洗→銅つや出しで開いた微小な空隙に一層の亜鉛を堆積→水洗。１１．多層ニッケル電気メッキ。以下の工程で行なう。ハブの銅層表面の油汚れを電解除去→熱水洗→水洗→銅層表面を酸活性化→純水洗→半光沢ニッケルメッキ→高含硫ニッケルメッキ→光沢ニッケルメッキ→ニッケルシールメッキ→ニッケルシール槽液回収→水洗。そのうち半光沢ニッケルと光沢ニッケルの電位差は１３０ｍＶ、高含硫ニッケルと半光沢ニッケルの電位差は２０ｍＶ、ニッケルシールと光沢ニッケルの電位差は１５ｍＶである。１２．クロム電気メッキ。以下の工程でおこなう。補助陽極取り付け→電解活性化→水洗→多層ニッケル表面のクロム酸活性化→クロム電気メッキ→水洗→亜硫酸水素ナトリウムで電気メッキ液中の六価クロムを還元して三価クロムとなす→水洗→熱水洗→補助電極を取り外し、クロム電気メッキ後に電気メッキクロム槽液を回収し、その後、ハブを更に水洗する。 The entire hub aluminum alloy semi-finished product is painted using the standard painting method. That is: First, the unevenness and burrs on the surface of the hub are polished with sandpaper to make it flat, and then sand is blown for 9 seconds using steel sand to reduce sand holes on the surface of the hub. After that, atomic ash (atomic ash is a kind of fast-curing substance) and hardener are prepared at a weight ratio of 100: 2, and used as a material to fill holes on the hub surface and side surfaces. Remove the recess. 2. After the above-mentioned filling material is dried, the filling trace is removed by using a polishing machine and a tool such as sun paper, and then pretreatment washing is further performed. That is, at normal temperature, the hub is washed with hot water of 30 to 40 degrees Celsius, and then degreasing (degreasing, removing impurities), clean water washing, film protection, pure water washing, and the like are performed. After washing, the water is blown dry and baked to remove impurities on the surface. After baking, the base powder is sprayed and baked at 198 degrees Celsius to attach ash powder (base powder) to the hub surface, increasing the smoothness of the hub surface and increasing the adhesion of the coating resin. 3. Polish the hub and polish the burrs, granules, impurities, etc. remaining on the hub surface using different numbers of sandpaper and polisher to make it flat, smooth the hub surface and eliminate sand marks. 4). Clean the dust accumulated on the hub surface using clean water and pure water, wipe the water marks on the hub surface, clean them or blow them with a blower and dry them, and then prepare the coating resin according to the required color. After preparing the spraying conditions, coating the base resin on the hub and preheating it, spraying the coating resin further to make the color uniform and then baking it at 170 degrees Celsius for 40 minutes to allow the coating resin to adhere to the hub It is prevented from falling off, and finally the coating resin is sprayed and then baked at 150 degrees Celsius to protect the coating resin and prevent its oxidation. 5. Rotate and grind the part of the hub that requires electroplating (the flat part of the front and rear surfaces of the hub), remove the coating resin of the part, expose the aluminum alloy raw material, and remove the other parts including the concave parts on the front and rear surfaces Keep the paint. Thereafter, the surface of the aluminum alloy raw material is subjected to plating using an electroplating method. 6). The above-mentioned coating resin is already rotationally ground, and the exposed part of the aluminum alloy material is polished. That is, first, the hard parts such as corners and grooves are polished with a small gun first, and then polished. 7). Pretreatment of electroplating of bottom layer nickel and copper. That is, the following steps are performed. Hub is removed by chemical hot soaking and dewaxing using BCR reagent of Amami Tokushusui Co., Ltd. → Ultrasonic polishing wax removal → Hot water washing → Washing to water → Surface of hub by chemical hot soaking with 152 reagent of Anmi Tokusuisui Co., Ltd. Remove oil stains → Wash with water. 8). Electroplate the bottom layer nickel and copper. That is, the following steps are performed. The hub is weakly corroded and removed from the aluminum aluminum alloy layer on the hub aluminum alloy semi-finished product using U152 reagent of Amami Tokushusui Co., Ltd. → Washing → Nitric acid, phosphoric acid, hydrofluoric acid and decontamination of Anmi Tokushusuisha Removes dialuminum trioxide from aluminum alloy semi-finished product using reagent prepared by mixing agent S → Washing → Pure water washing → Substitution of zinc using WB and WE reagent Deposit a layer of zinc on the hub → Dezincing using a solution containing 50% nitric acid and removing the dialuminum trioxide layer on the hub surface → Water washing → Pure water washing → Rezinc deposition → Water washing → Pure water washing → Bottom layer nickel electroplating → Water washing → Hub surface acid activated hub → Pure water washing → Copper electroplating → Water washing → Copper layer electroplating using citric acid → Hot water washing. The nickel bath solution is recovered after the nickel electroplating, and the idea is to wash the hub further with water. 9. Copper polished. The following steps are performed. Polished copper with air gun for grooves and corners → Polished → Polished copper with electric gun for grooves and corners. 10. Pretreatment of multilayer nickel electroplating is performed. The following steps are performed. In other words, chemical hot-dip using Sankei Yakusui SF-601 reagent to remove glossy wax → water washing → chemical hot-dip using Sankei Yakusui SF601 reagent to remove oil stains on the hub surface → water washing → Neutralize the acidic substance on the surface of the copper layer → Wash with water → Deposit a layer of zinc in the minute gaps opened by copper polishing → Wash with water. 11. Multi-layer nickel electroplating. The following steps are performed. Electrolytic removal of oil stains on the copper layer surface of the hub → Hot water washing → Water washing → Acid activation of the copper layer surface → Pure water washing → Semi-bright nickel plating → High sulfur content nickel plating → Bright nickel plating → Nickel seal plating → Nickel seal bath Liquid recovery → water washing. Among them, the potential difference between semi-bright nickel and bright nickel is 130 mV, the potential difference between high sulfur-containing nickel and semi-bright nickel is 20 mV, and the potential difference between nickel seal and bright nickel is 15 mV. 12 Chrome electroplating. The following steps are performed. Auxiliary anode installation → Electrolytic activation → Water washing → Multi-layer nickel surface chromic acid activation → Chromium electroplating → Water washing → Sodium bisulfite reduces hexavalent chromium in electroplating solution to trivalent chromium → Water washing → Heat Water washing → Remove the auxiliary electrode, collect the electroplated chrome bath solution after chrome electroplating, and then wash the hub further with water.
こうして前後表面の平坦部分を電気メッキし、その他の部分（ハブ前後表面の凹部分を含む）を樹脂塗装したハブを得る。最後に１３．得られたハブにアクセサリを組合せ、箱に包装する。
In this way, a flat portion on the front and rear surfaces is electroplated, and the other portion (including the concave portions on the front and rear surfaces of the hub) is resin-coated. Finally, 13. Combine the accessory with the resulting hub and wrap it in a box.
Claims (6)
ａ．アルミ合金半製品を標準塗装方法で塗装する工程、
ｂ．電気メッキが必要な部分の塗装樹脂を削り取り、ハブのアルミ合金原材を露出させる工程、
ｃ．ハブ半製品のアルミ合金材質が露出した部分につや出しを行なう工程、
ｄ．底層ニッケルと銅の電気メッキ前の前処理を行ない、ハブ表面のつや出し蝋と油汚れを除去する工程、
ｅ．底層ニッケルと銅を電気メッキし、アルミ合金半製品にニッケル層と銅層を形成する工程、
ｆ．銅層をつや出しする工程、
ｇ．多層ニッケルの電気メッキ前の前処理を行ない、ハブ表面のつや出し蝋と油汚れを除去する工程、
ｈ．多層ニッケルを電気メッキし、銅層の上に多層のイオウ含有量の異なるニッケルを形成する工程、
ｉ．クロムを電気メッキして多層ニッケルの上にクロム層を形成する工程、
以上の工程を具えたことを特徴とする、ハブの表面塗装と電気メッキを結合させた方法。 In a method that combines surface coating of the hub and electroplating,
a. The process of painting aluminum alloy semi-finished products by the standard painting method,
b. The process of scraping the coating resin where electroplating is necessary and exposing the aluminum alloy raw material of the hub,
c. Polishing the exposed parts of the aluminum alloy material of the hub semi-finished product,
d. A process of pre-treatment before electroplating of nickel and copper on the bottom layer to remove hot wax and oil stains on the hub surface,
e. Electroplating the bottom layer nickel and copper to form nickel layer and copper layer on aluminum alloy semi-finished product,
f. The process of polishing the copper layer,
g. A process of pretreatment before electroplating of multi-layer nickel to remove polished wax and oil stains on the hub surface,
h. Electroplating multilayer nickel to form nickel with different multilayer sulfur content on the copper layer;
i. Forming a chromium layer on the multilayer nickel by electroplating chromium;
A method of combining surface coating of a hub and electroplating, characterized by comprising the above steps.
ｊ．得られたハブをアクセサリと組み合わせて箱に包装する工程、
を具えたことを特徴とする、ハブの表面塗装と電気メッキを結合させた方法。 3. The method of combining surface coating of a hub and electroplating according to claim 1 or claim 2, further comprising, after step i.
j. The process of packaging the obtained hub in a box in combination with accessories,
A method of combining surface coating of a hub and electroplating, characterized by comprising:
4. A method of combining surface coating of a hub with electroplating according to claim 2 or claim 3, wherein an auxiliary anode is first attached during the step i for further electrolytic activation, followed by further electroplating chromium bath after chromium electroplating. A method of combining the surface coating of the hub and electroplating, wherein the liquid is collected and the auxiliary anode is removed.
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| CN105177642A (en) * | 2015-10-30 | 2015-12-23 | 姜少群 | Electrochromism combined plating solution for aluminum alloy hub |
| CN105483783A (en) * | 2015-10-30 | 2016-04-13 | 姜少群 | Chromium electroplating method of aluminum alloy hub |
| CN105543917A (en) * | 2016-01-05 | 2016-05-04 | 张颖 | Double-bottoming electroplating method for nickel-plating magnesium alloy hub |
| CN109778269A (en) * | 2019-03-29 | 2019-05-21 | 珠海市玛斯特五金塑胶制品有限公司 | A kind of automobile connecting bar high corrosion-resistant zinc-iron alloy plating process and auxiliary cathode hanger |
| CN113818014A (en) * | 2021-09-09 | 2021-12-21 | 苏州普瑞得电子有限公司 | Surface brightening treatment process for black nickel product |
| CN114369825A (en) * | 2021-12-10 | 2022-04-19 | 上海航天设备制造总厂有限公司 | Multi-layer chemical nickel plating method for ZM6 cast magnesium alloy surface |
| CN114752972A (en) * | 2022-05-10 | 2022-07-15 | 台山鸿艺精密技术有限公司 | Hub electroplating processing technology |
| CN115074793A (en) * | 2022-06-16 | 2022-09-20 | 山东省机械设计研究院 | Novel electroplating process of copper-aluminum composite material |
| CN115094492A (en) * | 2022-06-24 | 2022-09-23 | 一汽解放汽车有限公司 | Flange and flange surface treatment method |
| CN117241478A (en) * | 2023-11-15 | 2023-12-15 | 深圳市宇通瑞特科技有限公司 | Horizontal electroplating process for double-sided and multi-layer PCB (printed circuit board) |
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| CN105483783A (en) * | 2015-10-30 | 2016-04-13 | 姜少群 | Chromium electroplating method of aluminum alloy hub |
| CN105177642A (en) * | 2015-10-30 | 2015-12-23 | 姜少群 | Electrochromism combined plating solution for aluminum alloy hub |
| CN105543917A (en) * | 2016-01-05 | 2016-05-04 | 张颖 | Double-bottoming electroplating method for nickel-plating magnesium alloy hub |
| CN109778269A (en) * | 2019-03-29 | 2019-05-21 | 珠海市玛斯特五金塑胶制品有限公司 | A kind of automobile connecting bar high corrosion-resistant zinc-iron alloy plating process and auxiliary cathode hanger |
| CN113774366B (en) * | 2021-08-23 | 2023-12-22 | 创隆实业(深圳)有限公司 | Aluminum alloy surface plating process |
| CN113818014A (en) * | 2021-09-09 | 2021-12-21 | 苏州普瑞得电子有限公司 | Surface brightening treatment process for black nickel product |
| CN114369825A (en) * | 2021-12-10 | 2022-04-19 | 上海航天设备制造总厂有限公司 | Multi-layer chemical nickel plating method for ZM6 cast magnesium alloy surface |
| CN114752972A (en) * | 2022-05-10 | 2022-07-15 | 台山鸿艺精密技术有限公司 | Hub electroplating processing technology |
| CN115074793A (en) * | 2022-06-16 | 2022-09-20 | 山东省机械设计研究院 | Novel electroplating process of copper-aluminum composite material |
| CN115074793B (en) * | 2022-06-16 | 2024-03-08 | 山东省机械设计研究院 | Novel electroplating process of copper-aluminum composite material |
| CN115094492A (en) * | 2022-06-24 | 2022-09-23 | 一汽解放汽车有限公司 | Flange and flange surface treatment method |
| CN115094492B (en) * | 2022-06-24 | 2024-02-23 | 一汽解放汽车有限公司 | Flange and flange surface treatment method |
| CN117241478A (en) * | 2023-11-15 | 2023-12-15 | 深圳市宇通瑞特科技有限公司 | Horizontal electroplating process for double-sided and multi-layer PCB (printed circuit board) |
| CN117241478B (en) * | 2023-11-15 | 2024-02-23 | 深圳市宇通瑞特科技有限公司 | Horizontal electroplating process for double-sided and multi-layer PCB (printed circuit board) |
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