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piston rod hardchrome Question
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Posted by: snapper

05/23/2005, 00:46:16

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Dear all

I would like to have some information on hardchrome surface finishing.
I'm going to make a new piston rod, please advise me :
1. What material do I have to use ( ems-45 DIN 1.1730 or vcn-150 DIN 1.6582 )
2. Do I have to do heat treatment first before hardchroming proses
3 Is there other alternative to make this piston rod and increase its lifetime.
Thank you very much

Best regards,
David







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Re: piston rod hardchrome
Re: piston rod hardchrome -- snapper Post Reply Top of thread Forum
Posted by: maytag

05/23/2005, 23:15:28

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What kind of failures are you experiencing? A lot of factors are to be considered to get max life for your cylinders besides just the rod material i.e. alingment,mounting,rod size too small for the load,fluid contamination. Maytag






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Re: piston rod hardchrome
Re: piston rod hardchrome -- snapper Post Reply Top of thread Forum
Posted by: randykimball
Barney
05/23/2005, 21:03:10

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I understand why you want to increase the life of a piston rod. I am guessing you mean the kind that goes through a seal in a hydraulic or pneumatic cylinder.
Hard chrome is done after HT. What material have you been using for the rods? Hard chrome stays on better if applied to a satin or fresh machine surface. I would have it done. Specify the thickness and polish or grind it to size. Only plan to remove a few tenths... (.0005") IT will last about as good as anything you can currently obtain. 4140 HT is a good material in many cases. ... and it is already heat treated when you get it to around 38RC.

-randy-




The worst suggestion of your lifetime may be the catalyst to the grandest idea of the century, never let suggestions go unsaid nor fail to listen to them.


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Re: piston rod hardchrome Idea
Re: Re: piston rod hardchrome -- randykimball Post Reply Top of thread Forum
Posted by: snapper

05/25/2005, 02:11:50

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thanks for the information






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