Best of blasing - information and resources on abrasive blasting applicationsLasts responses from forumRE: Building a blasting booth for industrial appl- August 22, 2008 Dear Mike, do you really want to blast with expensive pressure blasting Wheel blasting is much mor ...http://www.bestofblasting.com/bestofblasting/ForumBestOfBl.nsf/($all)/364DE94DE1AC626FC125... RE: Surface cleanness of steel structures- August 22, 2008 In an air blast system, it depends upon pressure, surface being cleaned, angle of nozzle towards surface, etc. In a wheel machine it depends upon whether it is a direct- drive or indirect-drive wheel, I'd say more than likey it will be powered by 460 Volt, 3 Phase power but the velcity of which the wheel is slinging the abrasive is variable. So no good, exact answer other than...It depends. ...http://www.bestofblasting.com/bestofblasting/ForumBestOfBl.nsf/($all)/B15DB0A5CB78BE59C125... RE: media for plastic shot blasting- August 22, 2008 Tell me the reason, why you want to shot blast a aluminium surface with plastic Wha't kind of surf ...http://www.bestofblasting.com/bestofblasting/ForumBestOfBl.nsf/($all)/E1374D505E3632F8C125... RE: Pressure on the surface- August 18, 2008 Well, with cylinders of that size, there are a couple of options you can try to improve your production rate. The first is to employ a device known as an angle nozzle, in concert with a centering carriage and a lance. You can get angle nozzles with 1 or 3 holes, and angled to either 45 deg forward, 90 deg, or 45 deg reverse. In this application I would guess a 90 deg would be what you are look at. The alternative would be a device like a Clemco Hollo-Blast or Spin-Blast. However, be forewarned,.http://www.bestofblasting.com/bestofblasting/ForumBestOfBl.nsf/($all)/C3246A10695925C5C125... RE: Pressure on the surface- August 13, 2008 Well, the smallest inner zylinders are 5.35" wide in diameter. I will probably try to persuade them to buy venturi nozzles, because the cleaning process will be quicker like this, right Do you know a supplier for hypodermic needle gauges or long nozzles Thanks ...http://www.bestofblasting.com/bestofblasting/ForumBestOfBl.nsf/($all)/455A83B16EC5476FC125... RE: Pressure on the surface- August 13, 2008 I forgot to include this question in the previous one response (6), sorry: If I cannot know how high the surface pressure, I mean the impact caused by the particles, is. How can I know that the pressure is not too high and that I accidently harm the parts or that I am shotpeening them This is my last question, I think. Thanks ...http://www.bestofblasting.com/bestofblasting/ForumBestOfBl.nsf/($all)/AE8CABBAF9551DF3C125... RE: Pressure on the surface- August 12, 2008 Well, you hit the nail right on the head. There really isn't any reason to calculate the pressure, other than to cover any concerns that might be raised by someone who does not fully understand the process and might be involved with your contract. Since these are straight bore nozzle, you will not get the acceleration you would with a con-di or venturi nozzle, so your pressure loss through the nozzle can be ignored. Funny side note, con-di nozzle were developed by more accident than purpose. As.http://www.bestofblasting.com/bestofblasting/ForumBestOfBl.nsf/($all)/9767392357FE6B0AC125... RE: Pressure on the surface- August 12, 2008 Well, the smallest inner zylinders are 5.35" wide in diameter. I will probably try to persuade them to buy venturi nozzles, because the cleaning process will be quicker like this, right Do you know a supplier for hypodermic needle gauges or long nozzles Thanks ...http://www.bestofblasting.com/bestofblasting/ForumBestOfBl.nsf/($all)/7B8B77766EF3853CC125... RE: Pressure on the surface- August 11, 2008 Okay, now I'm a littler more up to speed. I have a tendancy of using U.S.A.industry terms, so forgive me if you were expecting metric or lab standard. Let's address your problem one step at a time. 1) Using a hypo-needle gauge. The hypo-needle gauge is used to indicate pressure at nozzle base. You insert the needle through the blast hose at a slight angle (gauge upstream, needle toward the nozzle holder). When you activate the blast machine, the guage will show the pressure in the blast hose...http://www.bestofblasting.com/bestofblasting/ForumBestOfBl.nsf/($all)/0F1C780FF01B98B9C125... RE: Pressure on the surface- August 11, 2008 Hi, thank you very much for your help again. It helps a lot. But I still have one question: If I measure the pressure before the air flow enters the nozzle, I does not have too much influence on the effect I will have on the surface. I mean if I use different nozzles, this results in different flow velocities and pressures at the end of the nozzles. Like you said, the media particles will have different kinetic energy, depending on the nozzle I use. In addition, if I use big media particles,...http://www.bestofblasting.com/bestofblasting/ForumBestOfBl.nsf/($all)/245C4A125B58A8DDC125... |