86 IRON AND STEEL SLAG

Data are unavailable on actual U.S. ferrous slag production, but domestic slag sales1 in 2019 were estimated to be 17 million tons valued at about $470 million. Blast furnace …

Gas torch cutting slag problem

I cut mostly 1/4" to 3/4" plate and sometimes I need to cut 1/8" plate. On the thinner plates the cut looks good and is nice and clean, but the bottom of the kerf fills …

Flux-Cored Welding: The Basics for Mild Steel | MillerWelds

For general purpose mild steel welding applications, a flux-cored wire with the designation E71T-11 can be used in any position, is available in a wide range of sizes and provides excellent welding characteristics for both thin and thicker material. Hobart® Filler Metals offers such a wire under the name Fabshield® 21B (E71T-11).

Gas Cutting: A Comprehensive Guide | MachineMFG

The resulting oxide slag is blown away by the gas flow, creating a cut. ... Applications of Gas Cutting. 1. Widely used for steel plate cutting and preparing weld bevels. 2. Suitable for cutting the gating systems of castings, with cutting thicknesses of up to 300mm or more. 3. Mainly used for cutting various types of carbon steel and low …

The effects of gas composition on the CO2 laser cutting of mild steel …

The gas mixtures used in this study are composed of oxygen, argon, nitrogen, helium. From the experimental results, it has been found that a high purity of oxygen is required for the high-performance CO 2 laser cutting of mild steel. Only a tiny oxygen impurity (1.25%) will reduce the maximum cutting speed by 50%.

What is Oxy-Fuel Cutting?

Oxy-fuel cutting is a process that uses oxygen and fuel gas to cut through metal. Find out more about what oxy-fuel cutting is and how it works from ESAB experts.

How to solve the problem of laser cutting slag?

Conclusion. The problem of laser cutting slag can be solved by proper maintenance of the laser cutting machine, proper selection of cutting parameters, and regular monitoring of the cutting process. By following these steps, the amount of slag produced can be significantly reduced, thus increasing the process.

Experiments on the kerf quality characteristic of mild steel …

The oxygen-assisted laser cutting process window for thick mild steel plates is relatively small. (4) A regression model is established to predict the kerf taper of thick mild steel plate, with R 2 of 82.46% and p-value of 2.5456 × 10-7 for the kerf taper. This model will aid in improving the high-power laser cutting process. (5)

The Cost of Slag

For example, when cutting aluminum with oxygen as the assist gas, the slag will form as aluminum oxide. This is a remarkably hard compound which can be extremely difficult for fabricators to remove from the support slats. If oxygen is used to cut steel, the slag will appear as iron oxide (rust) and a different set of challenges arise.

cutting with oxy acetylene torch

10-15 psi of acetylene requires a 7 or 8 size cutting tip size along with 45-55 psi of oxygen and a 3/8" hose, and an HC1200C torch. Pressure settings for cutting 3/8 - 1/2" material are based on 25' of 1/4" hose. Let's give our fellow members information based on fact, not fiction. Dave. "Bonne journe'e mes amis".

Plasma Cutting Stainless Steel: 10 FAQ Answered By Experts

Nitrogen is useful as a shield gas because as well as flushing the slag from the kerf, it also prevents oxygen from entering the cutting zone and causing the polyethylene to melt or burn. ... As an example, the Hypertherm XPR300 will cut 12mm mild steel at nearly 3 meters per minute (quality = 1), whereas it would cut stainless steel at 1.7m ...

8 Types of Flame Cutting Processes

Oxy-fuel Cutting. Oxy-fuel cutting is the most widely used flame-cutting process suitable for mild steel materials. This process uses a combination of oxygen and fuel gas (usually acetylene) to produce a high-temperature flame that melts the steel, which is then cut by a jet of pure oxygen. It relies heavily on the properties of the metal ...

mild steel gas cutting slag

Mild steel is the most commonly used plate for thermal cutting machines. Mild steel can be cut with plasma up to 3 inches thick. Saving production time and money using automated . Read More Gas Cutting: Process, Gas Types and Advantages. Oxyfuel gas cutting (also referred to as oxyfuel cutting or gas cutting) is a rather popular variation …

Gas selection guide

For mild steel, use an oxygen plasma gas and air shield gas for the best, clean cut quality, lowest dross levels, minimal rework, excellent weldability and highest cutting speed/productivity. For best cut quality on stainless and aluminum under 1/2″ use nitrogen plasma and air secondary for a good balance of cut quality and affordability.

Fundamentals of Gas Cutting and Welding

on metals that are easily oxidized at this temperature. Such metals are mild steel and low allow steels. Oxy-fuel cutting can be used to cut thicknesses from 2/8″ to up to 12″. Traditionally oxy-fuel processes are used for brazing, fusion welding, flame hardening, metalizing, soldering, stress relieving, cutting and bending.

Granulation and Heat Recovery from Metallurgical …

1711 Accesses. 29 Citations. Explore all metrics. Abstract. Metallurgical slags are produced at a massive rate of over 750 Mt/year, and carry a thermal energy …

What Is Flame Cutting Process and How Does It Work?

The process is a Thermo-Chemical Process requiring a source of intense heat, referred to as "Preheat", and pure oxygen. The pure oxygen requirement is of a 99.5% minimum purity, which is the minimum purity typically provided in cylinders and bulk systems. A reduction in purity of .1% will reduce cutting speed by about 10%, so one can see ...

Gas Cut – What Is Gas Cutting

Gas cutting refers to the use of gas flame to preheat the cut metal to the ignition point, so that it burns violently in a pure oxygen stream to form molten slag and release a lot of heat. Under the blowing force of high pressure oxygen, the oxidized molten slag is blown off. : The heat released further preheats the next layer of metal to reach ...

How To Reduce Dross and Slag During Plasma Cutting

Grinding and Sanding Techniques. One of the most effective ways to remove medium-thickness slag is the angle grinder with a flap disc. It's fast, effective, and won't gouge out much of the parent material. But, if the slag is thick and hard, the angle grinder with a grinding disc will get the job done.

What gas should welders use for manual plasma cutting?

The 95% nitrogen/5% hydrogen gas blend gives cuts a silver-color edge, good angle, and a sharp edge. The blend is recommended for stainless steel only. Nitrogen is an inexpensive, readily available inert gas compared to other fuel gases. Usually, manual plasma systems are designed with nitrogen in mind as a potential plasma gas option.

What Is Oxy-fuel Cutting?- Process, Pros, and Cons

Only mild steel and some low alloys meet the above conditions and can be cut effectively with the oxy-fuel process. How Does the Oxyfuel Cutting Process Work? Oxy-fuel …

(PDF) Analysis of ST-37 metal cutting with machine-cut

Display identifies cutting tip numbers, gas pressures, and hand-cutting speeds used for cutting mild steel up to 12 in. (304.8 mm) thick. Oxy pressure and LPG pressure.

Oxy-Acetylene Gas Cutting Process, Procedure and …

This gas cutting process is also known as oxyacetylene cutting or oxy-fuel cutting. This process of gas cutting is exactly the opposite of welding. Types of flames in oxy-acetylene gas cutting. There are usually three main types of flames in the gas cutting process. We will explain them briefly below. 1. Carburizing

Oxy-fuel cut quality

Oxy-fuel torch cutting, or flame cutting, is by far the oldest cutting process for mild steel. It is generally viewed as a simple process, and the equipment and consumables are relatively inexpensive. An oxy-fuel torch can cut through very thick plate, limited primarily by the amount of oxygen that can be delivered.

Plasma cutting stainless steel

If you have a dual-gas or multi-gas plasma, there are several combinations that can be used when plasma cutting stainless steel. Plasma gas options are air, nitrogen, F5, H-35. In addition, if you have an X-Definition plasma system with the correct gas console, you can use H2Mix. Your shield gas options are air, nitrogen or water.

Oxy-fuel cut quality

Oxy-fuel torch cutting, or flame cutting, is by far the oldest cutting process for mild steel. It is generally viewed as a simple process, and the equipment and …

A Guide to Gas Welding and Cutting Techniques

Gain a comprehensive understanding of gas welding and cutting and select the right method for your project needs. ... in the air. After welding, the slag must be cleaned thoroughly. Used for gas welding of aluminum and aluminum alloys: ... mild steel: 1500: 1300~1500: high carbon steel: 1300~1400: 1300-1500: aluminum: 1200: …

How To Reduce Dross and Slag During Plasma Cutting

3. Low-Speed Dross and Slag. When your cutting speed is too slow, the plasma arc becomes like an hungry animal, looking for more metal to keep itself alive. The arc becomes wider, which in turn widens the cut to a point where the gas velocity from the torch can no longer blast the molten metal away.

Improved plasma cutting of stainless steel

Recent technology advancements are dramatically improving the cut quality achieved with plasma on stainless steel. These advances span a range of thicknesses, from thin gauges up to 6.25 inches. Early plasma systems used very high amperages and delivered slow cut speeds. One of these older systems used nitrogen as the plasma gas …

Mild Steel Gas Cutting Slag

The Cost of Slag Fabricating and MetalworkingHow to Use a Cutting Torch with Pictures wikiHow. For example when cutting aluminum with oxygen as the assist gas the slag will form as aluminum oxide This is a remarkably hard compound which can be extremely difficult for fabricators to remove from the support slats If oxygen is used to cut steel the …