Metal Fabrication Service

Industrial Metal Fabrication
Industrial metal fabrication is the process of integrating parts or assemblies into industrial products. Often this involves sheets or plates of metal. Fabrication is used in a wide variety of industries including aerospace, energy, material handling, automotive, and much more. As you may have already guessed, the products created for industrial purposes are typically created in larger quantities and size-e.g. large tanks, silos, and heavy machine parts.

Structural Metal Fabrication
As the name implies, structural metal fabrication involves creating structural metal parts that are used in construction and other commercial, industrial, and residential projects. I-beams are a great example of a common structural part. Steel is the most popular type of metal used in structural projects because of its remarkable strength-to-weight ratio. Other metal parts that are often fabricated for structural purposes include stairs, walkways, towers, platforms, trusses, girders, and beams.

Commercial Metal Fabrication
Take a look around any commercial facility-restaurant, retail store, public space-and you will likely see a part that has been fabricated for commercial purposes. The two most popular categories of commercial metal fabrication are decorative and ornamental. Awnings, shelves, guardrails, sinks, appliances, and conveyors are all examples of commercial metal products. Compared to industrial and structural, commercial fabricated products tend to be smaller and more precise in their purpose.

Custom Metal Fabrication
As you can see, the possibilities of metal fabrication are endless, and oftentimes projects need to be custom made to meet the unique needs of the user. These are the instances when you need a metal fabrication shop that specializes in custom work. These type of fab shops will often offer custom design services, which use CAD tools to conceptualize and specify design plans. After the product has been completely designed, the manufacturing process begins. The fabrication methods used will depend upon the individual project, specific function, materials, and other factors.

Shearing

Although shearing is a type of cutting, it is classified differently because of how it is done. Shearing is accomplished by using two tools-one below and one above the raw metal piece-to make a single, lengthy cut. First, the cut is initiated by pressing down on a metal piece with the upper portion of a machine (formed like a blade), which causes a fracture. Next, a cut is made by continuously applying pressure to the broken metal, and the sheared edges can then be burred as this process helps in both the forming, and cleaning up, of the edges of the material pieces after shearing.

Cutting

Cutting a workpiece to divide it into smaller portions is a relatively typical method of metal production. While sawing is still the most common way to cut, more recent techniques include laser, waterjet, power scissors, and plasma arc cutting, which uses hot plasma to cut through electrically- conductive material. Cutting can be done using a variety of instruments, including hand and power tools, as well as computer numerical control (CNC) cutters. Cutting might be the first step of a more involved fabrication process or the sole one.

Another method of cutting metal that employs a die is known as die cutting. Two traditional methods include rotary die cutting and flatbed die cutting. A rotary die uses a cylindrical die that rotates in one location to cut some particular pieces of material. In rotary die cutting, the material is cut using a rotating cylindrical die fed via a press. On other metal materials, flatbed die cutting is often employed where the die is stamped down on the metal to cut out shapes. A flatbed die, which employs far more force and a flat surface than the other methods, is intended exclusively for stronger and thicker materials.

Drawing

Drawing is a technique for stretching materials into narrower shapes and involves pushing metal through a tapered die. The source material can be heated to lessen the force required to draw it through the process although drawing can often still be done at room temperature. Deep drawing is a different sort of drawing used to shape sheet metal into cylindrical or box-shaped vessels when the depth of the finished product is equal to or greater than its radius.

Welding

Welding is the method by which several pieces of metal can be joined into one by simply applying heat and pressure. It is a well-known technique due to its adaptability and can be used to join almost any metal element with another. The common types of welding are FCAW, MIG/GMAW, SMAW, and TIG.

Flux Cored Arc Welding, or FCAW, eliminates the requirement for a secondary gas source by using a wire electrode with a core that produces shielding gas. This welding is generally identical to MIG welding (inert metal gas). However, this welding procedure prevents a metal piece from interacting with most immediate conditions by using an external gas supply with a solid wire electrode, which speeds up and improves the consistency of the process.

The most basic type of welding instrument is called SMAW, or shielded metal arc welding; it consists of an electrode stick that creates an electric arc when it comes into contact with metal. The high temperature of the arc's impact is what joins the metal pieces together.

MIG, metal inert gas welding, uses a mechanism featuring a solid wire electrode that forms an arc between this electrode and the material being worked, and the parts are then fused together.

TIG, or tungsten inert gas welding, is a type of welding that is more suited to heavy metals such as carbon steels. It uses a tungsten electrode rod to produce brief arcs. Even though it is one of the trickier types of welding and needs a highly skilled professional to use it properly, it is effective for most metal-based items.

Folding

Another metal fabrication procedure is folding, which correctly leads the raw metal material in the die. There are three primary folding techniques in manufacturing metal, the most popular of which uses a brake press (or press brake).

With a brake press, the raw metal is held between the punch and the die. Pressure is applied to the raw material and into the die, where the material takes on its desired shape. This kind of procedure is frequently used for shaping sheet metal.

A material can also be folded manually, with the use of a special machine called a folder. This machine itself is relatively simple; it consists of a flat surface with a clamping bar that secures a piece of raw material (sheet metal) and a front panel that is raised higher which causes the extended part of sheet metal to bend.

Forging

Another well-known metal fabrication method is forging, which involves striking the raw metal with a hammer or a die to give it the required shape. This process is known as "applying compressive force." Just like other metal fabrication procedures, the forging process has some variants.

• Cold forging is the original forging method and is carried out at room temperature.
• Warm forging is performed at a temperature between room temperature and one slightly below a material’s recrystallization temperature.
• Hot forging refers to forging performed at a metal’s recrystallization temperature.
• Crystallization temperature is basically the temperature at which a molten material begins to turn into a solid.
• Recrystallization is a process used to remove impurities created during crystallization and recrystallization temperatures are lower than the original crystallization temperature where the impurities were created.

Casting

Casting is pouring molten metal into a die or a mould and allowing it to cool to produce an item. It's a procedure that works almost perfectly for producing identical goods by using the same mould, making it especially helpful for mass production. There are, of course, several casting variations. For instance, in die casting, a die is used to hold molten metal rather than a mould (or mold, depending on the spelling in your region). The die is what determines the shape of the finished product under this process.

Another method is permanent mould casting, which involves "storing" the molten metal in a mould. Although the finished product is stronger than other casting techniques, removing the mould once the product has finished cooling and taking shape may be difficult, and time-consuming if it is required for additional use.

The issues of continually removing a mould could be resolved, theoretically, by a semi-permanent mould or, perhaps, a different casting. A semi-permanent mould uses a disposable core in the mould to simplify the removal process associated with permanent molds.

Sand casting will be the final metal fabrication technique discussed. In this process, sand serves as the mould material with the desired form created within it. When complex designs are required, this particular procedure takes longer than the others but is also a little more cost-effective since the mould material is so plentiful.

Extrusion

Extrusion is a slightly more challenging metal fabrication process and is used to create cylindrical components, typically used for wiring or plumbing. In this method an object is formed by pushing material through a die. This process's most typical raw material is in the form of a metal slug or cylinder. The diameter of a piece of raw material is reduced to match the size of the die's cross-section. As a result, the cavity required to form objects like wiring is created inside the material piece by being pressed around a die.

Additionally, this procedure has two variants: hot extrusion and cold extrusion.

Hot extrusion is frequently employed when working with materials like copper or aluminum since it raises the temperature of the material, increasing its likelihood of being moulded into a certain shape. In contrast, room-temperature cold extrusion is used to fabricate steel metal to increase product durability.

Machining

Machining is a procedure that removes extra material from bits of raw metal. In theory, machining is a rather straightforward procedure. However, there are variations to be found. Turning, milling, and drilling are three of the more commonly used machining techniques.

Milling removes extra material from a raw metal component using specialized multi-point cutting tools. This procedure can be carried out manually or with the aid of a CNC milling machine. Milling, in general, is more frequently employed as a secondary metal fabrication procedure.

Another type of machining is turning, which employs a specialized machine called a lathe to produce cylindrical-shaped pieces by using a cutting tool to remove portions of raw metal pieces as they rotate in one direction. This complete procedure can also be carried out manually or with a CNC turning machine; the latter is employed when the utmost precision is required.

Stamping

Stamping makes an indentation into the raw material piece rather than a hole in it. Stamping is frequently used to produce different symbols, such as letters, numbers, or images, on the surface of a material object.

Currently, mechanical stamping presses, using electricity, and hydraulic stamping presses, using pressurized liquids, are the two major types available. Most of the time, stamping is done on metal sheets with a thickness of 14 inches or less, and it produces a wide variety of goods, such as coins (coining is a process), smaller metal parts for electronics (four-slide shaping), and so on.