Semi

Basic Info.

Model NO.	RC-M92
Transport Package	Plastic Drum
Specification	25 kg/Drum
Trademark	Number One
Origin	China

Product Description

The price is to be adjusted by negotiation for large orders.
INTRODUCTION

RC-M92 semi-bright nickel plating process is designed for the workpiece with high requirements for corrosion resistance performance, which is the bottom layer of semi-bright nickel in electroplating of double-layer nickel or multi-layer nickel system.
The sulfur content of the coating is less than 0.003%, the potential difference between the semi-bright nickel layer and the bright nickel layer could reach 120-145mv, a good corrosion resistance.
The coating has good softness, strong covering power, well levelled.
High concentration of brightener, low consumption.
Do not contain coumarin, less decomposition products, the bath is stable and easy to maintain. As well as reduce the cost of wastewater and activated treatment.

OPERATING CONDITIONS

	Standard	Range
Nickel sulfate	270 g/l	240-300 g/l
Nickel chloride	50 g/l	45-55 g/l
Boric acid	45g/l	40-50 g/l
Softener RC-M91	5 ml/l	4-6 ml/l
Leveller RC-M92	0.6 ml/l	0.4-0.8 ml/l
Stabilizer RC-M93	0.6 ml/l	0.4-0.8 ml/l
Semi-bright wetting agent	1.5 ml/l	1-2 ml/l
Temperature	50-55ºC	45-55ºC
pH value	4.3	4.0-4.8
Dk (A·dm-2)	4	2-6
Agitation	Air or mechanical agitation	Air or mechanical agitation
Filtration	Continuous	Continuous

MAKE-UP PROCEDURE

Add 2/3 pure water into the tank and heated to 60-70ºC.
Add nickel sulfate and nickel chloride then stirred to completely dissolve.
In other container, heat boric acid with water until dissolved then pumped into above solution.
Add 2 ml/l 30% aqueous hydrogen peroxide (add after dilution), stir for 1 hour then heat it to 65-70ºC, stir for 2 hours to remove hydrogen peroxide.
Add 2-3 g/l activated carbon when the temperature at 55-60ºC and stir for 1 hour. Let the bath stand for 4-8 hours then filtrate it, add water to make-up level. Adjust the pH to 4.0 with dilute sulfuric acid or CP grade sodium hydroxide (4%).
Electrolyze solution by 'dummy plating' for 12 hours at 0.2-0.5 A/dm2 or until the low potential color gets light gray from dark black.
Add the required amount of additives then start plating.

EQUIPMENT
Tank: plastic lined steel or plastic.
Filtration: the filter pump is able to filter the solution at least four times every hour. Add 0.6 g/l active carbon every 40 hours to gain a better effect.
ROLE OF ADDITIVES AND REPLENISHMENT
Softener RC-M91: it is for improving the softness of coating, decreasing the internal stress of coating, and promoting covering power of the bath.
Leveller RC-M92: it increases the brightness and levelling of the coating. The brightness and levelling degree of the coating decrease when lack of RC-M92, and serious excess will lead to high stress and poor covering power.
Stabilizer RC-M93: it stabilizes the potential difference between semi-bright nickel and bright nickel coating, and improves the corrosion resistance of the coating.
Notice: Do not add wetting agent or liquid de-contaminant into semi-bright nickel solution to avoid the decrease of corrosion resistance due to the increase of sulfur content in the coating. The bath should be electrolyzed at low current regularly to remove copper and zinc impurities.
CONSUMPTION OF ADDITIVES

Softener RC-M91: 40-60 ml/KAH
Leveller RC-M92: 100-150 ml/KAH
Stabilizer RC-M93: 30-50 ml/KAH
SAFETY AND ENVIRONMENTAL
A Material Safety Data Sheet (MSDS) includes product safety instructions and environmental protection instructions. Read and review the MSDS for appropriate health and safety warning before use.
WARRANTY

We provide guarantee for product quality under the valid law.
The quality of the product after reprocessing or repackaging by customer is not included in the guarantee.
Please feel free to contact us if you have any questions or issues about the products, we are ready to answer at any time.

COLOR & PACKAGING
Softener RC-M91 is a colorless or light yellow liquid with plastic barrel packaging. The longer time is, the deeper the color will be. The packaging specification is 25 kg/pcs.
Leveller RC-M92 is a colorless or light yellow liquid with plastic barrel packaging. The longer time is, the deeper the color will be. The packaging specification is 25 kg/pcs.
Stabilizer RC-M93 is a colorless liquid with plastic barrel packaging. The packaging specification is 25 kg/pcs.

IMPORTANT NOTICE REGARDING THIS INSTRUCTION BOOK
The product information and recommendations contained in this document are based on our experimental theory and data. Due to the particularity of the surface processing, further as the actual use of our products by others is beyond our control, NO GUARANTEE of any kind is made as to the effects of such use, and NO RESPONSIBLE for any consequences. Also, all the information in this document cannot be used as evidence of copyright infringement.
COMPANY PROFILE
Foshan Nanbowang Environmental Protection Technology Co., Ltd is a subsidiary of Foshan Renchang Technology Co., Ltd., with more than 10 years experience of environmental metal finishing, R & D and sales, and has won a national high-tech enterprise. Our company is mainly engaged in the research and development of environmentally friendly electroplating additives and is committed to the development of cyanide-free, phosphorus-free and ammonia-free metal finishing technologies.The mission of is 'Innovation, Environmental, and Development'. The company's technical team has participated in a number of high-tech research and development, and has independently developed and obtained 3 nationally authorized invention patents and 3 copyrights.At No.1, we offer high-caliber electroplating additives to improve the appearance and performance characteristics of your components, and have continually refined and evolved our electroplating additives to meet 21st century quality standards. We are agile, efficient, and committed to providing 100% customer satisfaction.

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