sata 3000 hvlp
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Anybody know if this normal for the 3000 to use so much material fast. on bumpers I usually use 2 parts of clear completely and on my second pass the cup is empty had a other painter in shop and he said that ain’t normal to use that much clear that fast he was amazed.
Clear I use is u tech 4.0 ,fluid tip 1.3 ,pressure at 25 for clear
actually that gun is supposed to save on material being a HVLP, it has a transfer efficiency rate of 65%, your problem is your running too high of air pressure should be around 10psi, also Check to see if the CFM(cubic feet per minute) is correct. Its critical to have the right amount of CFM for the gun to atomize properly.
10 psi is at the air cap not at the gun inlet. 29 psi is the base line for that gun. how much clear are you using? 2 PPS cups worth? HVLP’s do not atomize the clear as good as RP’s do. you could be piling too much on to get it to flow out properly. try bumping the pressure up some more
Not 2 cups worth mix ratio is 4 to 1 for the clear so I put in 2 parts of clear 2 parts of hardner in it I mean, I personally think it needs a rebuild sometimes my boss leaves the guns submerged in lacquer thinner all night long
So you mix a 4:1 clear as a 1:1 , i think that will give you a problem.
common misconception due to bullshit from the industry many years ago when HVLP was forced onto everyone ,HVLP has lower transfer rates with higher viscosity materials as it lacks the air velocity to keep the droplets in flight ,reduced pressure AKA compliant guns achieve higher transfer rates with high voscosity materials ie clearcoat ,even old conventional equipment is good with high viscosity materials ,its just not that good with bases and thin paints ,thats where we where all conned 😉
basicly your using the wrong gun for the aplication of clearcoat ,if you want it to put out less paint then simply turn in your fluid control nob an reduce the fan down to compensate ,readjust your inlet pressure to optimise atomisation and away you go
oh and about 2 BAR triggered is a good starting point for a HVLP gun
As indicated in Table 1, a negligible difference was found between the TE’s obtained for HVLP and conventional air spray. Information in Table 1 suggests conventional air spray equipment is capable of achieving a TE comparable to HVLP while operating at a slightly higher fluid delivery rate. The volume of material used by each spray gun to finish the panels was also relatively consistent, ranging from approximately 6.3 to 6.9 ounces.
Another significant finding of the comparison was the finish quality achieved with each spray gun at different fluid delivery rates. As shown in Table 2, the HD panels (sprayed with the HVLP spray gun at a fluid delivery rate of approximately 3.6 oz/min) consistently ranked last for smoothness. A noticeably higher degree of orange peel was present on the HD panels. The panels identified as HC, CD and CF were comparable in appearance with respect to smoothness. This is reflected in the inconsistent ranking order assigned by each staff person and from staff comments on how difficult it was to rank these three panel sets.
In regard to gloss, the HC panels consistently ranked lowest. Again, based on the inconsistent ranking order and staff comments, the remaining panel sets (HD, CD and CF) were comparable in appearance.
Implications
The comparison study findings suggest the following in regard to TE, finish quality, production speed and fluid viscosity:For higher viscosity coatings, conventional air spray guns may be used just as efficiently as HVLP spray guns if they are properly set up and operated. As Table 1 indicates, conventional air spray guns are capable of achieving TE’s comparable to HVLP air spray.
From a finish quality perspective, conventional air spray equipment may be the best choice for high solids/viscosity coatings and production rates. As illustrated by study findings, the higher atomization energy levels available to conventional air spray equipment make it better suited for atomizing high viscosity coatings at higher fluid delivery rates. Consequently, conventional air spray guns may produce the desired finish when spraying high performance high viscosity coatings in a production environment while the finish produced by an HVLP air spray gun may fall short of expectations. As indicated above, this may be achieved without sacrificing TE.
Findings suggest that HVLP’s reputation for TE may simply reside in the fact that its design lowers the ceiling for excessive setup parameters, a particularly beneficial attribute when spraying easily atomized coatings. That is, when compared to conventional air spray, HVLP design restricts the degree to which operating parameters (i.e., fluid and atomizing air pressures) can be set to excessive levels. While advantageous for low viscosity or easily atomized coatings, this attribute puts HVLP at a disadvantage with more difficult-to-atomize high performance coatings.My old sata 3000 was like a garden hose with a 1.3. Try chokin’ down the fluid.
Utech 4.0 works better with a 1.4,its not really a HS clear.Your 1.3 is overatomizing the material.Secondly Mix it 4parts clear and 1 part hardener just like your supposed to.For a good sized bumper you will use a potful or just a touch over,it doesn’t go as far as other HS clears.
[quote=”Rob1962″ post=31434]So you mix a 4:1 clear as a 1:1 , i think that will give you a problem.[/quote]
Yeah. Don’t stray from the recommended mix ratio. Especially with your hardener. A little extra reducer (up to 5-10% more max) may not be so bad, but when your reducer is also your hardener (like in 4:1 mix products) you are asking for a lot of trouble.
As the others mentioned as well, an RP is much better for clear.
Just to compare, with my clear, I use about a pint/500ml of clear for an average bumper.
i often use my sata minijet 1.2 for clearing bumpers ,halves material usage but i would highly recomend the Iwata W101 or the centre post version the W300 1.3 if you want to put in on faster and wetter ,your material usage on panel work is vastly reduced using mini and midi guns however often the finish is a little too good ,another great gun is the ANI R1 HPS 1.2 also available as a Draper expert ,you can pick them up for about £100 and they will blow the Sata mini into fits for clearing
I use a Sata NR2000HVLP with a 1.3nozzle set a bumper usually takes 12oz of DC5100 clear. I was thinking of changing to a 3000 but my foreman said if it aint broke don’t fix it.
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