How many types of cutting nozzles are there?
The 3 main types of gas cutting nozzles are A, B & PNM. The 3 types are produced in different sizes varying in inches. Type A and B have two-seat nozzles whereas PNM’s three-seat nozzle prevents backfire and flashbacks ensuring a safer working environment. All 3 types use liquefied petroleum gas fuels (LPG).
How do I choose a gas cut nozzle?
Four Steps to Proper Nozzle Selection
- Choose One-Piece or Two-Piece Nozzle: Acetylene – one-piece nozzle always.
- Choose Series: ANM, ANM-E, PNM, PNM-E, AFN nozzles.
- Choose Preheat Capacity: Choice of nozzle depends on preheat capacity.
- Choose Size: Select size recommended for thickness of steel to be cut.
How is the size of the oxy cutting tip determined?
Select the tip size rated to cut that thickness or beyond. The tip size is based on the cutting oxygen gas orifice (using drill index sizes) – not always the pre-heat orifices. Cutting oxygen gas orifice sizing is important so you may compare different manufactures tip sizes, as there is not an industry standard.
What is cutting nozzle?
» Cutting nozzles for Acetylene are known as ANM nozzles while cutting nozzles for LPG are known as PNM nozzles. » Different sizes of cutting nozzles are used for cutting metal of different thickness. ANME LONG PATTERN. PNME /IC – PM LONG PATTERN.
How many gas cutter nozzles are there?
Types of gas cutting nozzles. Gas cutting nozzles are supplied in various types. There are three main globally recognized and frequently used nozzles. They are supplied in different sizes, material, bore diameters, and pressure tolerance ability.
How thick can oxy propane cut?
The pre-heat orifice is also sized to handle the proper amounts of mixed gas to heat a given thickness of metal adequately. Oxy-fuel equipment is capable of cutting mild steel from 3 mm (1/8”) to 300 mm (12”).
What is a rosebud torch used for?
Used for general heating of metals, brazing, hard facing, etc.
What pressure do you cut oxygen acetylene?
In case the recommended working pressure settings are not indicated, safe numbers are 40 psi for oxygen and 10 psi for acetylene, regardless of tip size. Simply adjust them until you get a neutral flame, but pay close attention to the pressure to prevent it from exceeding the limit.
What is the nozzle size?
The orifice size of the nozzle determines the operating pressure of your machine. As a rule of thumb, the smaller the orifice, the greater the restriction of water flowing through the machine. This causes the pressure to increase. Choosing a nozzle with too large of an orifice will reduce operating pressure.
Can I use an oversized nozzle to cut thin material?
While one can use an “oversized” nozzle to cut “thin” material, this will usually result in a reduction in quality as well as an increase in cutting Oxygen consumption. As the bore diameter increases the quantity of Cutting Oxygen also increases.
What kind of nozzle is used for acetylene cutting?
Oxy-Fuel Cutting Nozzle Oxy-fuel Cutting Torch can be used for Acetylene and Propane cutting but with different cutting nozzle, for Propane cutting is used G03 nozzle and for Acetylene is used G02 nozzle.
What is the working principle of cutting nozzles?
The cutting-nozzle has a number of small jets and a space around the central large jet for oxygen pressure. Oxygen and acetylene in approximately equal proportions are burnt at the small jets; this flame is used to preheat the work to about 900°C.
What is oxy-acetylene cutting machine?
In this process, oxygen gas and electrodes are used to cut roughly mild steel, low-alloy steel, stainless steel, copper, bronze, brass, monel, metal etc. The electric arc takes the place of the heating flame of the oxy-acetylene cutter.