Help,parameters to spray Zn/al

[mustangero75]

Hello everybody i am new to the forum,and new to metallizing ,hope can help me,need parameters (flowmeters) to spray zinc/al(85/15).
equipment:
metco 10e( with high speed gears )1/8 wire,oxy/acet,
2GF(???? parameters)
3AF(???? parameters)
Acetylene/Oxygen Regulator( ????? parameters)
Air filter regulator( ????)
10 hp air compressor(500 lts)

thxss

[Gordon]

Hi mustangero75

to the Surface Engineering Forum.

With 1/8" jetted hardware and EC air cap

2GF Oxygen 45
2GF Acetylene 40 (maybe 42 with high spray rate)
2AF Air 51 (maybe 53 with high spray rate) 3AF manual should have conversion tables from 2AF settings

Lighting pressures:
Oxygen 30 psi
Acetylene 15 psi
Air 70 psi

While spraying adjust flow meter needle valves to give above flows

[mustangero75]

thxs Gordon ,very helpful, i dont have the 3AF manual so dont have a conversion table

3AFreads)

NLPM / SCFM
AIR / AIR
4.83 / 70
BAR / PSIG
/
-800 -/-30-
-700 -/-25-(to 0)
--0---/--0--

[Gordon]

Hi mustangero75

Sorry, I don't have 2AF or 3AF manuals to hand. Hopefully, someone else on the forum has one of the AF manuals and can help.

[mustangero75]

hi again, new problem with the gun; hope can help me to fix the problem,,gun throws flame to the front wire guide,? why this happens?
thxs

[Gordon]

Hi mustangero75

The gun should not be lit without first feeding wire into the nozzle. Without wire the flame will blow back down the wire guide channels.

[mustangero75]

Hi again Gordon,,gun was working fine ,, until yestarday the gun doesnt spray,,dont start,,when i put the lighting position its ok,,but when i open the valve all the way the flame stop,,parameters in the flowmeter reads oks, in the lightinig position and when i open the valve,,,what can be the problem,,?
thxs

[Gordon]

Hi mustangero75

Sounds like you need to service the gun gas head. Replace valve core and plunger o-rings. Check also siphon plug and nozzle o-rings.

[mustangero75]

thanks again,,,,i just get a 11E Metco gun,gas cap AH(for 3/16 wire)right?, siphon plug has a number 3 ,, and nozzle has a number 7...
can be use this gun with zinc/al??

[Gordon]

Hi mustangero75

thanks again,,,,i just get a 11E Metco gun,gas cap AH(for 3/16 wire)right?, siphon plug has a number 3 ,, and nozzle has a number 7...
can be use this gun with zinc/al??

AH air cap good for start-stop operation with aluminium and zinc alloys using acetylene or propane and 3/16" wire. Use EA if spraying is on a more continuous basis.

Siphon plug No3? 87-2-3 acetylene 1/8" wire
Nozzle No7? 87-7-7 acetylene 3/16" wire annular?

[mustangero75]

if want to change to 1/8 wire do i only change the nozzle or need to change the siphon plug too??
will fit the 12e nozzle on the 11e?

[Gordon]

Hi mustangero75

Apologies for my last post, the part numbers were totally wrong. I have now corrected that post best I can. Can anyone with 11E manual confirm whether these are right please.

I have been searching for my old 11E manual but it appears I have lost it I was mistaken in thinking there was some commonality between 11E, 12E and 14E parts. Well it has been a long time since messing with the 11E.

Changing between 3/16" and 1/8" will require nozzle, siphon plug, air cap changes.

can be use this gun with zinc/al??

Yes, this should not be a problem with the right hardware.

will fit the 12e nozzle on the 11e?

Not sure.

I would strongly advise getting the gun instruction manuals if you can.

[mustangero75]

hi,want to know whats the direrence or uses betwen nozzles 87-7-3 *(1)(acet 1/8 anular),87-7-13*(2)(acet 1/8 jetted) 87-7-14*(2)(3)(acet 1/8 jetted non loading),wich one is for zinc /al wire?

thxs again

[Gordon]

Hi mustangero75

hi,want to know whats the direrence or uses betwen nozzles 87-7-3 *(1)(acet 1/8 anular),87-7-13*(2)(acet 1/8 jetted) 87-7-14*(2)(3)(acet 1/8 jetted non loading),wich one is for zinc /al wire?

thxs again

87-7-14*(2)(3)(acet 1/8 jetted non loading) is recommended for spraying soft wires such as tin and babbitt. When starting and stopping wire feed while gun flame is on can produce conditions where the wire can to stick in the nozzle. Non-loading nozzles/air caps reduce this by having air cooling channels. The downside is that they are less efficient. So consider using non-loading hardware only if you are troubled by wire sticking in nozzle.

87-7-3 *(1)(acet 1/8 annular), and 87-7-13*(2)(acet 1/8 jetted) both should be suitable. I've only ever used jetted hardware on Metco wire guns, so I can't really comment on pros and cons.

[mustangero75]

Hello, parameters for aluminum wire ?? same as zn/al(85/15)wire?
thxsss

1/8 al wire
2gf flowmeter
11e &10e metco gun

[mustangero75]

?????

[Gordon]

Hi mustangero75

For 1/8" aluminium wire try:

With 1/8" jetted hardware and EC air cap

2GF Oxygen 43
2GF Acetylene 40
2AF Air 52

Lighting pressures:
Oxygen 30 psi
Acetylene 15 psi
Air 70 psi

[mustangero75]

thxs