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FAQ
You are probably experiencing the effects of Duty Cycle. Many machines are designed to shut down automatically after a period of continuous operation. This feature is there to protect the machine from over-heating. Click here for a more detailed explanation of duty cycle.
It depends on a couple of things; the size of the balloons and the tank size. Temperature and tank pressures are also factors. The chart below will give you an approximate number of balloons based on these factors. The chart assumes that the tank is full and that you’re not over-inflating the balloons. [You won’t get 125 balloons if the tank is half full and the 9” balloons you’ve bought are inflated to twice that size.]
Helium Cyl Size | Tank Pressure | 9″ | 11″ | 14″ | 16″ |
40 cu.ft. | 2200 psi | 125 | 60 | 35 | 25 |
60 cu.ft. | 2200 psi | 175 | 100 | 50 | 40 |
80 cu.ft. | 2200 psi | 250 | 120 | 70 | 50 |
110 cu.ft. | 2200 psi | 340 | 180 | 90 | 75 |
220 cu.ft. | 2200 psi | 680 | 360 | 180 | 150 |
300 cu.ft. | 2650 psi | 940 | 500 | 250 | 200 |
fig 1
FOURTH DIGIT | TYPE COATING | CURRENT |
0 | ORGANIC | DC+ only |
1 | ORGANIC | AC, DC+, DC- |
2 | RUTILE | AC or DC- |
3 | RUTILE | AC, DC-, DC+ |
4 | RUTILE, IRON POWDER | AC, DC-, DC+ |
5 | LOW HYDROGEN | DC+ only |
6 | LOW HYDROGEN | AC or DC+ |
7 | MINERAL IRON POWDER | AC, DC-, DC+ |
8 | LOW HYDROGEN, IRON POWDER | AC or DC+ |
POWER CABLE
Wire Size | Max Amp @ 100 ft. | Voltage Drop / 100 ft. |
4 | 105 | 2.6 |
6 | 80 | 3.2 |
8 | 55 | 3.42 |
10 | 40 | 4.0 |
12 | 25 | 4.0 |
14 | 20 | 6.4 |
WELD CABLE
Amps | Duty Cycle | Cable Sizes Required per Lengths | ||||
0 – 50 ft. | 100 ft. | 150 ft. | 200 ft. | 250 ft. | ||
100 150 180 180 200 | 20 40 20 30 50 | 8 6 5 4 3 | 4 5 4 4 3 | 3 3 3 3 2 | 2 2 2 2 1 | 1 1 1 1 1/0 |
200 200 225 225 250 | 50 100 20 40 & 30 30 | 2 2 4 or 5 3 3 | 2 2 3 3 3 | 2 2 2 2 2 | 1 1 1 1 1 | 1/0 1/0 1/0 1/0 1/0 |
250 250 300 | 400 100 60 | 2 1 1 | 2 1 1 | 1 1 1 | 1 1 1/0 | 1/0 1/0 2/0 |
325 350 400 400 500 600 600 600 650 650 | 100 60 60 100 60 60 80 100 60 80 | 2/0 1/0 2/0 3/0 2/0 3/0 2-1/0 2-1/0 3/0 2-1/0 | 2/0 1/0 2/0 3/0 2/0 3/0 2-1/0 2-1/0 3/0 2-1/0 | 2/0 2/0 2/0 3/0 3/0 3/0 2-1/0 2-1/0 4/0 2-1/0 | 2/0 2/0 3/0 3/0 3/0 4/0 2-2/0 2-2/0 2-2/0 2-2/0 | 3/0 3/0 4/0 4/0 4/0 2-3/0 2-3/0 2-3/0 2-3/0 2-3/0 |
800 800 1000 | 80 100 80 | 3-1/0 2-3/0 2-4/0 | 3-1/0 2-3/0 2-4/0 | 3-1/0 2-3/0 2-4/0 | 2-3/0 2-3/0 2-4/0 | 2-4/0 2-4/0 4-2/0 |
1000 1200 1200 1500 1500 | 100 80 100 80 100 | 3-3/0 3-4/0 4-4/0 4-4/0 5-4/0 | 3-3/0 3-4/0 4-4/0 4-4/0 5-4/0 | 3-3/0 3-4/0 4-4/0 4-4/0 5-4/0 | 3-3/0 3-4/0 4-4/0 4-4/0 5-4/0 | 3-3/0 3-4/0 4-4/0 4-4/0 5-4/0 |
TIG [Tungsten Inert Gas] and MIG [Metal Inert Gas] refer to two electric welding processes in common use today. They are very different and each has characteristics making them suitable for particular welding applications. In brief;
TIG welding uses a non-consumable electrode that provides the arc and a separate filler material in the form of a rod. In addition, the TIG torch delivers a shielding gas to the weld site to minimize weld oxidation and/or alter the characteristics of the weld metal. In technique it is much like handling a oxy-acetylene torch though it is an electric process rather than flammable gas. It produces high quality welds and is especially suitable for aluminum and stainless steel metals.
MIG welding uses a device to automatically feed welding filler material into the weld site. The material is in the form of wire and the wire itself is the electrode. As it is with the TIG torch, the MIG torch delivers shielding gas to the weld site although welding wire is available that produces its own shielding gas in much the same way flux coated stick electrodes do.
The American Welding Society refers to these two processes as GTAW [gas tungsten arc welding] for TIG and GMAW [gas metal arc welding] for MIG.
The type of torch you are using and the thickness of material being cut determine the proper size cutting-tip for use in oxy-acetylene flame cutting.
Reproduced below are the cutting tip charts for two of the most popular types of torches in use. Call your local Haun Welding Supply branch if you don’t see your particular torch listed here.
Harris Cutting Torches & Tips
Thickness of Metal in Inches | Tip Size | Oxygen Pressure [PSIG] |
Light gauge to 3/16 3/16 – 3/8 3/8 – 5/8 5/8 – 1 1 – 2 2 – 3 3 – 6 | 000 00 0 1 2 3 4 | 15 – 30 20 – 30 30 – 40 35 – 50 40 – 55 45 – 60 50 – 75 |
For acetylene, use one piece tips with 5-6 PSIG acetylene pressure. For MAPP, natural gas, or propane, use two piece tips with 4 oz/sq.in. or higher fuel gas pressure |
Victor Cutting Torches – Tip Series 1-101, 3-101, 5-101
Metal Thickness | Tip Size | Cutting Oxygen[PSIG] | Preheat Oxygen[PSIG] | Acetylene [PSIG] |
1/8′ 1/4′ 3/8′ 1/2′ 3/4′ 1′ 2′ 3′ 4′ | 000 00 0 0 1 2 3 4 5 | 20/25 20/25 25/30 30/35 35/35 35/40 40/45 40/50 45/55 | 3/5 3/5 3/5 3/6 4/7 4/8 5/10 5/10 6/12 | 3/5 3/5 3/5 3/5 3/5 3/6 4/8 5/11 6/16 |
-CAUTION – At no timeshould the withdrawal rate of an individual acetylene cylinder exceed one-seventh of the cylinder contents. If additional flow capacity is required, use an acetylene manifold of sufficient size to supply the necessary volume. |
Tip sizes and gas regulator settings are dependent on the thickness of the material to be welded and the type torch being used.
Reproduced below are the tip charts for two of the most popular types of torches in use. Call your local Haun Welding Supply branch if you don’t see your particular torch listed here.
HARRIS Welding Torches & Tips
Metal Thickness | Tip Size | Rod Size | Oxygen [PSIG] E. P. U. P. | Acetylene [PSIG] E. P. U. P. | ||
3/64′ 1/16′ 3/32′ 1/8′ 3/16′ 1/4 – 3/4′ | 1 3 5 5 7 9 | 1/16′ 1/16′ 3/32′ 1/8′ 5/32′ 3/16 – 3/4′ | 1 3 5 5 7 9 | 15 20 25 25 30 35 | 1 3 5 5 7 9 | .25 [4 oz.] or more |
E. P. = Equal Pressure U. P. = Universal Pressure |
VICTOR Welding Torches & Tips
Metal Thickness | Tip Size | Oxygen [PSIG]Min. Max. | Acetylene [PSIG]Min. Max. | ||
Up to 1/32′ 1/16 – 3/64′ 1/32 – 5/64′ 3/32 – 7/64′ 1/16 – 1/8′ 1/8 – 3/16′ 3/16 – 1/4′ 1/4 – 1/2′ 1/2 – 3/4 3/4 – 1′ | 000 00 0 1 2 3 4 5 6 7 | 3 3 3 3 3 4 5 6 7 8 | 5 5 5 5 5 7 10 12 14 16 | 3 3 3 3 3 3 4 5 6 8 | 5 5 5 5 5 6 7 8 9 10 |
Brazing is a process wherein metal is joined together by heating the base metal to approximately 800°F and then using a non-ferrous filler metal having a melting point below that of the base metal. The filler metal melts and adheres to the base metal. The base metal does not melt and there is no fusion as in welding processes.
Most commercial metals can be brazed. Although brazed joints have a relatively high tensile strength they do not possess the full strength properties of conventional welding techniques. One very useful characteristic of brazing is its ability to join dissimilar metals.
Duty cycle is the amount of time in a ten-minute period that a welding machine may be operated continuously without fear of overheating or damaging its components. Duty cycle is expressed as a percentage [%]. For example, a machine with a 60% duty cycle at 200 amps may be operated continuously for 6 minutes at that amperage [60% of 10 minutes]. The remaining four minutes of the cycle should be used to cool the machine down. Duty cycle percentages will change for a given machine depending on the output selected. It is possible to have several duty cycles listed. In general, the higher the output the, lower the percentage or time allowed.
You should also note that many welders manufactured today are equipped with devices that will automatically shut the machine down if operating temperatures are exceeded. Letting the machine cool down will normally reset the system.
The primary purpose of shielding gas is to displace the air in the weld zone to prevent contamination of the weld zone by oxygen, nitrogen, or water vapor. Shielding gas for TIG welding can be argon, helium, or a mixture of argon and helium. Argon is the most popular. Argon has greater cleaning action and provides a more stable arc than Helium. Argon is heavier than air and provides a blanket over the weld that protects it from contaminants. Helium is lighter than air, requires a higher gas flow than argon and is more expensive to use. Helium allows greater penetration and faster welding speeds because the arc is hotter in the helium atmosphere than in the argon atmosphere. For MIG welding a mixture of argon and helium is sometimes used in welding metals that require greater heat. Argon is used for most TIG welding applications.
Argon [A], helium [He], and carbon dioxide [CO2] are the principal shielding gases used. Oxygen [O2] is used as an additive to stabilize the welding arc. Listed below are some of the more common gas and gas mixture applications.
BASE METAL | SPRAY TRANSFER | DIP TRANSFER | PULSED SPRAY |
Stainless Steel | A + .5% O2 A + 1% O2 A + 2% O2 | 90% HE + 7.5% A + 2.5% CO2 | A + .5% O2 A + 1% O2 A + 2% O2 |
Carbon and Low Alloy Steel | A + 1% O2 A + 2% O2 A + 5% O2 A + 5% CO2 A + 8% CO2 | CO2 A + 25% CO2 A + 8% CO2 A + 5% CO2 | A + 1% O2 A + 2% O2 A + 5% O2 A + 5% CO2 A + 8% CO2 |
Aluminum and Magnesium | Argon Helium A + 25% HE A + 75% HE A + .15% O2 | N/A | Argon A + 25% HE A + 75% HE A + .15% O2 |
You should also note that many welders manufactured today are equipped with devices that will automatically shut the machine down if operating temperatures are exceeded. Letting the machine cool down will normally reset the system.
Recommend MIG wire for:
Optimum weld performance on clean, oil- and rust-free material.
Best arc performance and feedability.
Good weld puddle control, good wetting action and a wider operating range.
Recommend Metal-Cored wire for:
Less prep-time – Performs better on rust or mill scale.
Good wash-in and tie-in and good bead wetting.
Higher deposition rate at the same welding current as MIG.
The choice of DC+ [DCRP]or DC- [DCSP] depends on the weld characteristics required. Straight polarity [DCSP] means the electrons flow from the electrode to the work, concentrating most of the heat on the weld. Reverse polarity [DCRP] means the flow of electrons is from the plate to the electrode causing greater heat at the electrode and the electrode tends to melt off. DCSP produces a narrow, deep weld resulting in a more rapid weld and less distortion of the base metal. DCRP forms a wide and shallow weld.
For Assistance, Please Call (800) 439-4286
Haun Welding Supply Inc.
5921 Court Street Road
Syracuse NY, 13206
Phone: (315)463-5241