Industrial Heating Experts Speak Blog

Fastener Heat-Treating Tips (part 6)

June 6, 2012
/ Print / Reprints /
/ Text Size+

We continue with our discussion on the heat treatment of fasteners by offering additional tips for the heat treater.  

Tip #7: Avoid Mixed Parts/Contaminated Lots

Mixing of fasteners during heat treatment is commonplace. Avoidance and understanding of where fasteners tend to “hang up” in the system is perhaps the best strategy to combat this problem.

Separation Tips:

1. Leave adequate gaps (10-20 minutes) between different-sized fasteners and different part/lot numbers.
2. Clean out quench tanks after each lot has exited the furnace. Often operators use magnets mounted on poles to retrieve fasteners from quench or rinse tanks.
3. During maintenance shutdowns, drain all tanks (pre- and post-washers, quench and dip tanks) and inspect where parts are accumulating. Not only remove these parts from all areas but implement solutions to keep parts from gathering in these areas.
4. Use separator screens after the quench and after the temper to segregate fasteners by size.
5. Remove stragglers from the system by off-line visual or size-sort means.  
You must login or register in order to post a comment.



Image Galleries

2013 Product Roundup

The Product Roundup is a showcase of some of the best products and technologies the thermal-processing industry has to offer.  Industrial Heating has rounded up these advanced, energy-efficient and cost-effective items in one special section  for easy reference.


The Heat Treat Doctor, Dan Herring, and IH Editor Reed Miller talk about heat-treat grids, fixtures and baskets in this month’s podcast. Sponsored by:                              

More Podcasts


Industrial Heating

Cover issue image

2014 April

Check out the latest publication of Industrial Heating. This month's edition features a special look at new insulating materials and installation techniques and how they reduce maintenance, as well as save energy.

Table Of Contents Subscribe

Furnaces North America Poll

Will you be attending Furnaces North America in October?
View Results Poll Archive


Everyday Metallurgy

If you have ever wished there was something people could read to help them better understand what you do, this is the book for you.

More Products

Clear Seas Research

CS-OflRGB1.gifWith access to over one million professionals and more than 60 industry-specific publications,Clear Seas Research offers relevant insights from those who know your industry best. Let us customize a market research solution that exceeds your marketing goals.

Employment Marketplace

Employment Marketplace


Updated FacebookTwitter imageYoutube IconLinkedin Icon