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6 Methods of Sheet Metal Welding

6 Methods of Sheet Metal Welding Now, let’s take a comprehensive look at some methods for melding metal sheets. 1. MIG Welding Metal Inert Gas welding (MIG), also known as Gas Metal Arc Welding. It involves feeding a continuous solid wire electrode into the weld puddle with a welding gun. The melted wire in the pool causes the joining of the metal pieces. The shielding gas in the welding gun prevents atmospheric contamination of the weld puddle. MIG welding creates top-quality welds, and it’s suitable for most sheet metals, such as aluminum, steel, and stainless steel. This welding method is the go-to technique in the automotive and home improvement industry. Also, it is a cost-effective technique, as it requires no sophisticated machines. TIG Welding Tungsten Inert Gas (TIG) is an arc welding that involves using a non-consumable tungsten electrode under DC or AC to produce its weld. Like MIG welding, it uses inert shielding gas – argon or helium to prevent atmospheric contaminants and oxidation of the electrode and puddle. TIG welding is suitable for welding non-ferrous metals like aluminum, titanium, copper, nickel, magnesium, chromium, etc. It is a valuable technique for the aviation and aerospace industries. Also, it is ideal for fabricating frames for motorcycles, doors, and feeders. This welding method provides the welder with better control leading to a neat and strong weld. However, it may be time-consuming and requires expertise on the part of the welder. Stick Welding Stick welding is referred to as shielded metal arc welding. It is a manual arc welding process that uses a stick covered in flux as an electrode. An electric current from the welding power supply forms an arc between the pieces joining metals and the electrode. It is suitable for tough metals like iron and steel. The process does not use any shielding gas. As heat is generated, it disintegrates the flux covering the electrode, forming a slag that protects the weld pool from contamination. This welding technique is perhaps the most convenient, as its equipment is compact and portable – easily carried around. It is a common technique in construction, shipbuilding, and steel fabrication industries. Plasma Arc Welding Plasma arc welding is similar to TIG welding in that it uses a tungsten electrode. However, it uses a small arc and permits placing the electrode on the welding torch body. The pressurized gas forms a hot plasma, which melts the metals together to create solid welds. This welding technique requires low power and works at high speed. Moreover, it produces precise welds making it widely accepted in the aviation and marine industries. Like TIG welding, plasma arc welding does not require filler materials. Also, it produces high-quality welds with less need for finishing. Electron Beam and Laser Welding As the name suggests, laser and electron beam welding uses lasers and electron beams as the heat source to fuse and join pieces of metals. Unlike most other methods, this welding technique requires a sophisticated machine or automated robots. It is a high-precision welding technique, which makes it suitable for operations with intricate details. The laser beams can focus on the tiniest of substances for extreme accuracy welding. Moreover, it is suitable for welding tough metals like carbon steel, titanium, stainless steel and aluminum. The technique is also suitable for thermoplastics. The method yields products of great aesthetic appeal, reducing post-production needs. Gas Welding Gas welding is one of the traditional forms of welding by heat. It involves using heat generated from burning fuel (gasoline), oxygen, or oxyacetylene to join pieces of metals together. The burning of these fuels produced very hot flames that melt metal surfaces during joining. The technique remains one of the most used welding methods in industries. It has a broad scope of application, suitable for both ferrous and non-ferrous metals. Also, it is effective and efficient for welding pipes and tubes, repairs of ventilation and air conditioning systems, etc. Unlike many other welding techniques, it doesn’t require electricity. Also, it is portable, highly economical, and doesn’t require the services of specialists.

2023

02/28

TianHua Yihe Metal Fabrication Finishing Services

Thyh Metal Fabrication Finishing Services: Deburring, Polishing and Painting Deburring and polishing are key finishing processes in metal fabrication, necessary before the final step of painting. Deburring Deburring removes burrs that may occur during metal fabrication. Although burrs are usually minor, they can cause assembly issues or damage the integrity of finished parts if not removed. The deburring process eliminates these potential hazards. Deburring includes a variety of manual and mechanical processes: Cutting: Drills, files, scrapers, brushes, bonded abrasive methods, mechanical edgers or machine deburring. Power brushing: Uses metal filament brushes in a variety of materials, shapes and sizes. Fast and cost-effective. Bonded abrasive finishing: A sanding method that uses belts, sheets, pads, disks or wheels. The most common abrasives are aluminum oxides, silicon carbide, or zirconia compounds. Abrasive blasting: Propelled by air pressure, abrasive blasting can be done wet or dry. Mass finishing allows multiple parts to be deburred and finished simultaneously. This may be the final step in the finishing process for functional parts. Methods include vibratory finishing, barrel tumbling, and centrifugal finishing. Electropolishing is a non-mechanical, non-distorting deburring method that is often used to remove burrs from complex or fragile parts. The appropriate deburring process depends on the size and shape of the burr, and what it will take to remove it without damaging the fabricated metal part. All Metals’ skilled fabricators can determine the best deburring and finishing processes to achieve precision parts.   Polishing This metal finishing process is one of the final steps of fabrication, after laser cutting, forming or bending, deburring and other metal fabrication processes. Polishing removes any remaining miniscule burrs, and then buffs it to a final finish. The end goal of metal polishing is a smooth surface that suits your project. Metal polishing utilizes an abrasive compound adhered to a wheel or belt that provides friction. The condition of the metal at the beginning of the polishing process is what determines the type of abrasive that we will be used to create the desired finish. We have both in house expertise and key vendor relationships to accomplish nearly any desired metal finish, from #3 graining to #8 mirror and everything in between. Thyh Metals Fabrication offers a full range of fabricating and finishing services, including laser cutting, bending, forming, deburring, polishing and painting. Being a one-stop shop means you can rely on quality processes from beginning to end of your metal fabrication project. Ready to discover how our precision processes can provide the finishing touches to your metal fabrication project? Request a quote here and one of our expert sales and estimating staff members will be happy to walk you through your next project.   Painting Choosing a paint finish is an essential step in the metal fabrication process. The right paint finish can prolong the lifespan of metal parts and improve appearance. We have both in house knowledge and key vendor relationships to accomplish painting as simple as primer coats and as extensive as Kynar and enamel paints. We are qualified to offer the best paint quality and protection for any type of metal or project. Applying paint to sheet metal is similar to applying paint to other surfaces. We begin with a clean metal surface to eliminate any debris or rust, then apply a rust-inhibiting primer on ferrous metals. The primer coat is followed by multiple layers of paint, and finish with a protective coating. We can paint ferrous and non-ferrous metals. Painting and top coat services include: Zinc-rich primer Water-based latex primers Epoxy Urethanes Military-compliant CARC finishes Our design team and engineers will work with you to decide which paint finish best suits your metal fabrication project and budget. Talk to a project manager to discover the best metal finishing application for your project.      

2022

12/13

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