HOME  |  NEWS  |  BLOGS  |  MESSAGES  |  FEATURES  |  VIDEOS  |  WEBINARS  |  INDUSTRIES  |  FOCUS ON FUNDAMENTALS
  |  REGISTER  |  LOGIN  |  HELP
William K.
User Rank
Platinum
The inexplicable corrosion adventure.
William K.   12/17/2011 8:35:39 AM
NO RATINGS
This is an interesting tale. What is missing is how the problem was solved. I have seen corrosion pop up on machined parts and not had an explanation of how to prevent it from anybody in the shop. Of course, these parts were steel, not stainless, and they were black conversion coating treated. The eventual solution, which met with a lot of complaints, was to boil the parts for a few hours in clean water, with a new batch of water every hour. It seemes that some of the blackening solution had remained in some of the small tapped holes in the fixture, and was responsible for the corrosion.

For the problem with the stainless parts in the story, one fix would be to change to a non-free-machining grade and grind the parts to size. Not a cheap or easy fix, but probably quite effective.



Partner Zone
Latest Analysis
Six big automakers will carry the electric vehicle (EV) battery market to a five-fold sales increase by 2020, a new study says.
Take advantage of the properties of plastic to integrate clever features that benefit everyone. Abiding by these guidelines will prepare you for a smooth design cycle.
Determining the quantities and location of sensors in an Internet of Things application requires a thorough problem statement and a clear vision of success, an expert will tell engineers at the upcoming Design & Manufacturing Show in Minneapolis.
2016 engineering grads can expect to earn an average salary of $65,000 right out of the gate. Petroleum engineers' wallets are much fatter, though -- they are expected to earn about $20K more.
3D printing is now adding value to manufacturers at all steps along the business value chain. Come find out how at a talk by John Jaddou at next month's Embedded Systems Conference in Minneapolis.
More:Blogs|News
Quick Poll
The Continuing Education Center offers engineers an entirely new way to get the education they need to formulate next-generation solutions.
Aug 8 - 12, Getting Hands On with Arduino Mechatronics
SEMESTERS: 1  |  2  |  3  |  4  |  5  |  6 |  7 | 8 | 9 | 10


Focus on Fundamentals consists of 45-minute on-line classes that cover a host of technologies. You learn without leaving the comfort of your desk. All classes are taught by subject-matter experts and all are archived. So if you can't attend live, attend at your convenience.
Learn More   |   Login   |   Archived Classes
Twitter Feed
Design News Twitter Feed
Like Us on Facebook

Technology Marketplace

Copyright © 2016 UBM Canon, A UBM company, All rights reserved. Privacy Policy | Terms of Service