SterlingShield WS-Ⅱ

Introduction

SterlingShield WS-II, an improved version of SterlingShield WS, is a water base solution which provides exceptional protection for silver / silver alloy and gold / gold alloy surfaces. Tarnish resistance, anti-sulfide ability, and wear resistance are all improved significantly after coating with SterlingShield WS-II.

Properties

● A protective ultra-thin film is formed after the workpiece parts are immersed in the SterlingShield WS-II solution at 55ºC for 0.5 to 5 minutes.
● The protective film dramatically improves tarnish and wear resistance, while having no negative effects on contact resistance and solderability
● Short-term heat treatment of 200ºC will not affect the protective properties of the ultra-thin film.
● Workpieces will not have water stains after SterlingShield WS-II treatment.
● SterlingShield WS-II has a long bath life.

Composition of Plating Solution

To use SterlingShield WS-II, simply dissolved it in heated water (55ºC). The solution is then ready to be used.

Operating Conditions

Note: Keep the bath temperature of the first water rinse at slightly above 50^oC in order to maintain good cosmetic appearances. Otherwise some haze residue can be observed.

Solution Preparation

Note: Before using SterlingShield WS-II, shake its container for 1 minute after SterlingShield WS-II is immersed at a temperature of 50ºC.
1. Thoroughly clean the work tank.
2. Add 75% volume DI water and elevate the temperature to 50 to 55ºC.
3. Add SterlingShield WS, and stir to form a homogeneous solution.
4. Add water to the desired level, and stir the working solution for at least 1 minute.
5. Adjust the working temperature to 50 to 55ºC

Equipment

Container: Stainless steel or PP
Ventilation: Required
Heat: PTFE class

Disclaimer

All proposals or suggestions regarding our company's products in this manual are based on experiments and data that our company trusts. Due to the inability to control the actual operations of other practitioners, our company cannot guarantee or be responsible for any adverse consequences.