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24th Feb 2020, 12:37 AM #1Diamond Member
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OT - Reshaping spring steel clips
Zero machining content here but I guess someone on here has played with spring steel.
I have some of these spring steel clips (hub cap clips) that I need to reshape, they are made from 12.7 x 1.2 flat.
I'm thinking the procedure is to anneal the clips by heating to red heat and allowing to air cool, reshape the springs while they are soft, heat and quench, temper in the oven at 200°C.
Does that sound about right?
IMG_3317.jpg
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24th Feb 2020, 05:31 PM #2Senior Member
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- Apr 2014
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- Perth
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quenching
[QUOTE=bob ward;1963566]Zero machining content here but I guess someone on here has played with spring steel.
I have some of these spring steel clips (hub cap clips) that I need to reshape, they are made from 12.7 x 1.2 flat.
I'm thinking the procedure is to anneal the clips by heating to red heat and allowing to air cool, reshape the springs while they are soft, heat and quench, temper in the oven at 200°C.
Does that sound about right?
IMG_3317.jpg
bob
do you use oil or water to quench it
steve
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24th Feb 2020, 05:42 PM #3Most Valued Member
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How much do you have to reshape them? Springs can generally take a bit of permanent shape change without having to go through the whole heat treatment scenario.
Those ones have a lot of surface area so I'd say they are going to cool down pretty quickly from red hot. Test annealing one just cooling in air and see how it goes but you might need to cool it slower.
Steve
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24th Feb 2020, 06:47 PM #4Golden Member
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- Oct 2001
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- ACT
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as steve has said they will cool quickly from red hot.
oil quench would be safest, temper for springs generally is a blue ~ 290C + a few degrees depending on the alloy. if you know the alloy steel charateristics which is unlikely you may get it more spot on but you should be close enough at those general temps.
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24th Feb 2020, 09:30 PM #5Most Valued Member
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- Mar 2011
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- Southern Flinders Ranges
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Is it actually a spring, or just a piece of bent steel that relies on not reaching plastic deformation to keep tension
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