What material should blasting and jetting nozzles be made from?
A discussion started in 1999 & continuing through 2017(1999)
I am looking for a special ceramic blasting nozzle/tube that would be used to blast casting slag in internal cavities that are hard to access. Preferably the OD diameter would be 3/8" and the tube would be bent at one end to access the cavities. Any leads would be appreciated.Jeff Thompson
- Mayfield, Kentucky
Jeff: I manufacture a number of parts from silicon carbide, by reaction joining. Custom components are reaction bonded together. I have a number of carborundum nozzles that have ~3/8 choke point.David Carnahan
- Natick, Massachusetts
Ed. note: Sorry, we discuss technical issues here, but this is a no-registration-required website, and we do not help with commercial sourcing for a bunch of reasons -- including the fact that we're drowning under spam, and in a number of cases suppliers have posted responses pretending to be satisfied customers :-)
Perfect nozzle for metal etching machine(2002)
I need a nozzle for my spray type etching machine for copper. I made this etching machine using pvc, motor pump, plastic container and a aquarium like box. What I can't perfect is the nozzle: that needs fine tuning.
Thanks,Danny G. Reyes
Let me introduce myself. My name is Joe and I am a process engineer in a company named UNISEM in Malaysia, and I work in metal finishing department (or you can call it plating). My line had a copper etching machine, or normally we call it "back etching machine" and the designation is same as you say about it.
Can I know what chemical you use to etch the copper?Keng Joe Lew
UNISEM - Ipoh, Malaysia
A. Hello Danny,
I'm now student at British Malaysian Institute. I'm kind of interested about your etching machine project. Can you help me on how to design the machine because I'm planning to build it for my final year project. What material to use?
BMI - Seremban, N Sembilan, Malaysia
Designing a waterjet steel descaling system(2007)
Q. My company is trying to design a machine to descale steel billets that have been heated to 2300 degrees Fahrenheit. We are trying to find information on how to do this using water jets. I have found some information that says to use water at 120 to 250 bar, but we don't know how far from the part to put the jets, what kind of a shroud we will need to contain the steam, etc. Any information would help. Thank you.Randy Hemingway
Machine Design Engineer - Wright City, Missouri, USA
February 1, 2012
A. I CAN'T GIVE YOU SPECIFIC DETAILS, BUT IT HAS BEEN MY EXPERIENCE THAT THE BEST SOURCE OF INFORMATION FOR YOUR PROBLEM IS TO START WITH THE NOZZLES. THE BEST INFORMATION I GOT WAS CONSULTING PEOPLE WHO DESIGN AND MANUFACTURE STAINLESS STEEL NOZZLES FOR THIS PURPOSE.
SINCE YOU KNOW THE PRESSURE YOU WANT TO USE AND BILLET SIZE YOU ARE DEALING WITH THEY CAN TELL YOU ABOUT THE NUMBER AND SPACING OF NOZZLES NEEDED TO ACCOMPLISH THIS. THIS ALSO GIVES YOU THE BASIS FOR THE FLOW RATE OF WATER REQUIRED. YOU WILL ALSO BE ABLE TO SIZE YOUR WATER PUMPS AND WATER SOURCE. IF YOU ARE PUMPING HIGH PRESSURE WATER LONG DISTANCES BETWEEN THE PUMP AND DESCALING RING YOU WILL NEED TO LAYOUT YOUR PIPING RUNS TO MINIMIZE SHARP BENDS WHICH CAUSE YOUR PIPING TO VIBRATE SEVERELY. THERE ARE ANTI-HAMMERING DEVICES YOU CAN PUT IN LINE TO MINIMIZE THIS.JIM VENABLE
- WAXAHACHIE, TEXAS, USA
August 26, 2017
Q. Sir which material should I select for jetting nozzle inserts? (SS316 / SS202 or any other)
Input parameters 150 bar water pressure & 25 LPM flow
Aryan Pumps and enviro solutions - Pune, Maharashtra,India
A. Hi Vishal. No metal will offer the abrasion resistance of ceramic nozzles or inserts, but nozzles can and are made of all metals including stainless steel. I don't think there is a best answer based on water pressure and flow; rather, I think you need to look at what kind of application you are speaking of and what track record various materials have in that application.
For example, do the nozzles periodically clog in this application and, if so, what is the cleaning method and chemistry? A first guess based on general experience in other applications is no match for years of specific experience in the actual application -- what material do your competitors make their nozzles from? Good luck.
Ted Mooney, P.E. RET
Pine Beach, New Jersey
Striving to live "Aloha"
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