finishing.com -- The Home Page of the Finishing Industry
A website for Serious Education, promoting Aloha,
& the most FUN smiley you can have in metal finishing

HomeFAQsBooksHelpWantedAdvertiseForum
(current
topics)
topic 4060

Blistering after 2nd layer of Electroless Nickel


(1999)

HELLO,I AM HAVING PROBLEM WITH BLISTERS IN THE CAVITY OF THE PARTS AFTER PUTTING 100 MICROINCH OF ELECTROLESS NI. I TRIED TO PLATE IT TWICE WITH SINTER IN BETWEEN TO SLOW THE NI DEPOSIT BUT I AM STILL GETTING BLISTER AFTER 2ND PLATE. ANY HELP OR ADVICE WILL BE GREATLY APPRECIATED.

THANX IN ADVANCE.

A LITTLE INFO:

NOLI BERLING
- San Diego, California


(1999)

please help! our customer is not happy with the rough finish on the parts due to sandblasting.

we tried baking soda blast but we are getting blister after 2nd E'less. is there any other process that we can use to eliminate sandblasting without blistering the parts? or is there any sandblasting media that does not leave a rough finish that are easy to clean?

material is copper tungsten

process

1 e'less

2 sinter

3 sandblast

4 e'less

5 electrolytic

6 sinter

spec calls for 100 microinch of ni with electrolytic ni on top.

NOLI BERLING
- San Diego, California


(2000)

Tungsten Carbide is difficult to plate on. You need special pretreatment for that.

Thick EN should also be a special EN. Not all EN processes can plate thick deposits. Consult your supplier.

I am not familiar with the sintering that you mentioned but you cannot plate EN on EN without electrolytic activation in between as it will peel off.

sara michaeli
sara michaeli signature 
Sara Michaeli
chemical process supplier
Tel-Aviv, Israel




This public forum has 60,000 threads. If you have a question in mind which seems off topic to this thread, you might prefer to Search the Site

ADD a Q or A to THIS thread START a NEW THREADView CURRENT TOPICS

Disclaimer: It's not possible to diagnose a finishing problem or the hazards of an operation via these pages. All information presented is for general reference and does not represent a professional opinion nor the policy of an author's employer. The internet is largely anonymous & unvetted; some names may be fictitious and some recommendations may be deliberately harmful.

  If you need a product/service, please check these Directories:

JobshopsCapital Equip. & Install'nChemicals & Consumables Consult'g, Train'g, SoftwareEnvironmental ComplianceTesting Svcs. & Devices


©1995-2017 finishing.com     -    Privacy Policy
How Google uses data when you visit this site.