Air quenching steel for fine pearlite
Air quenching steel for fine pearlite
(OP)
Seeking high ductility, fatigue and hardness in a spring element. Air quenching is obviously the most efficient and least expensive method.
I'm looking for fine pearlite (ferrite+cementite).
Wondering what size 'fine' really is. i've seen 3microns called fine, 50 microns called 'impossibly fine' etc.
Help needed! thanks.
I'm looking for fine pearlite (ferrite+cementite).
Wondering what size 'fine' really is. i've seen 3microns called fine, 50 microns called 'impossibly fine' etc.
Help needed! thanks.





RE: Air quenching steel for fine pearlite
RE: Air quenching steel for fine pearlite
I'm considering both micro alloy (1541v) becuase i know that can air harden in still air pretty good (350BHN) but that is a penny more per pound than somehting 1090M or 1090H. Not sure why they would modify 1090 for air quench, but its what i've got so far.
Also, I'm considering 1065. Goal is fine pearlite, good hardness - above 300BHN min, and low loading fatigue performance (100k cycle type).
Thanks for responding!
RE: Air quenching steel for fine pearlite
RE: Air quenching steel for fine pearlite
Hot wind from an open air gas oven, air quench.
Isn't that pearlitic wire the patenting wire? we don't have a chance to deform the long grains with cold working or hot working after
RE: Air quenching steel for fine pearlite
RE: Air quenching steel for fine pearlite
RE: Air quenching steel for fine pearlite
Also, what are the main concerns with air quench? thanks. TW
RE: Air quenching steel for fine pearlite
Open quesion, what size and structure is 'fine' pearlite?
Seem lamelar spacing of 3microns in some studes.
RE: Air quenching steel for fine pearlite
RE: Air quenching steel for fine pearlite
Basically the modification is to enhance hardenability to maintain the noted hardness range. Many of the components using the 1090 MA were replacements for standard 1070 quench-and tempered.
The biggest concern is that the part should enter the cooling area above the critical temp, fans (or other heat removal system) are working properly, part cooled at the same general rate throughout.
I've seen the lower carbon work on tubular materials, such as 10- or 15B21.