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221 Bright Alkaline Cyanide-Free Zinc Plating Process

2017-12-05
Product model

Code:221

Name:221 Bright Alkaline Cyanide-Free Zinc Plating Process

Product features

221 process is the newest cyanide-free zinc plating technology, It overcomes the problem of embrittlement even in mirror bright and thicker deposits. The metal distribution and the temperature tolerance of the electrolyte are more perfect . 

①Mirror Bright Coating

221 Brightness is higher than the Cyanide Zinc Plating Process and Conventional Alkaline Zinc Plating Process, and comparable to Acid Zinc. Passivating without fogging haziness.
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②Avoids Yellowing Problem Of Blue Chromate

221 Alkaline Zinc after blue chromate, the coating is deep blue, comparable to Acid Zinc.
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③Not Hazy Of Yellow Trivalent Chromating

221 Alkaline Zinc coating is clear and transparent; the Cyanide Zinc Plating coating is tend to fogging be hazy.
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④High Bright Deposit Without Embrittlement
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⑤High Throwing Power and Even Metal Distribution

High throwing power, and even thickness of coating, greatly saves the consumption of Zinc ingot, saving 25-40% than Acid Zinc, 15-30% than Cyanide Zinc Plating.
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Left fig: the thickness of outer coating is 25μm, inner is no less than 17μm 221工艺

221 Process

⑥ Tolerance to High Temperature 

When the bath temperature is 50℃, the coating is still mirror brightness bright.
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⑦ Excellent Covering Power 

The covering power is superior to Cyanide Zinc Plating and Acid Zinc.
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⑧Super Adhesion to Passivation Film 

The adhesive force of 221 Alkaline Zinc coating is greater than Acid Zinc, and is comparable to Cyanide Zinc Plating.
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⑨Wide Current Operating Range

When the current is 6A in the Hull Cell, the whole specimen  panel only has 0.5 cm burnt, when 0.2A, the specimen panel can be bright.
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⑩Strong Impurity Tolerance

□The bath can be prepared with ordinary and tap water ,no need for 99% high purity alkaline hydroxide and pure water.

□Strong tolerance of impurity from pretreatment, the test is as follows:
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Comments: It is better to carry out the pretreatment completely, and use high purity alkaline and pure water to prepare the cell bath.

⑪Stable bath
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⑫Key Points Of Maintenance
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Usage method

Make-up: 

221 A brightener 5-25ml/L, 

221B Carrier 0.5-1.5ml/L, 

221C purifier 0.5-1.5ml/L.

Consumption:

221A brightener 100-200ml/KAH, 

221B Carrier 20-70ml/KAH, 

221C purifier 10-20ml/KAH.

Product display

221碱性无氰镀锌光亮剂.jpg

Online consulting

Ekem(Fujian) Chemicals Co. ,Ltd

ADD: Xingtai Economic Development     Zone, Zhangzhou, Fujian, China

PC: 363900

Ekem Chemical Industry Co. ,Ltd. of Xiamen

ADD:20 /F, Post &Telecom Guangtong Bldg,No.11,    Hubin East Road, Xiamen, Fujian, China

PC:361004

TEL:+86-592-5881933   400-600-9110

FAX:+86-596-8369769


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Ekem Chemical Industry Co,.Ltd.Of Xiamen   ©2017 All Right Reserve   ICP No.4582162 Fujian