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What is the effect of Oxalic Acid used for finishing Flapper steel valves?

2007

Dear Sir,

Flapper steel valves are manufactured from 20C & 7C grades of steel used in compressors. To achieve desired finish, these valves after punching are introduced to centrifugal finishing machines.

I want to use Oxalic Acid (as such) in the finishing process. May I know the effect of this chemical on flapper valve's performance such as compressive stress, fatigue life etc.?

Regards,

Sunil Surve
Employee - Mumbai, Maharashtra, India

Q. What is the correct method to finish the flapper valves. Is it through Vibro bowls, centrifugal or anything else. What is the most common media used?

Venkat Surya
- Mumbai, India
April 11, 2012

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Ed. note: Please tell us why you ask, Venkat, as it always makes for more interesting and useful discussions :-)

A. Need to ask you some questions? What is the desired surface finish end result. Are you going to treat the surface finish after you achieve that result? Do you have any mass finishing equip.? Media will depend on these answers.

AF Kenton
retired business owner - Hatboro, Pennsylvania
April 12, 2012

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