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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 . 

???Mirror 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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???Avoids Yellowing Problem Of Blue Chromate

221 Alkaline Zinc after blue chromate, the coating is deep blue, comparable to Acid Zinc.
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???Not 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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???High Bright Deposit Without Embrittlement
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???High 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 25??m, inner is no less than 17??m 221??????

221 Process

??? Tolerance to High Temperature 

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

The covering power is superior to Cyanide Zinc Plating and Acid Zinc.
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???Super 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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???Wide 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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???Strong 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.

???Stable bath
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???Key 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

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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


Learn More

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

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