What is the process of slitting a coil?

Maria Smith / February 4, 2023



The process of slitting is a metal manufacturing process where a coil of the said material is cut into different lengths and widths as required by the application it is being used for. The material can be aluminum or steel of any idea. The process is known as stainless steel coil slitting when the master coil is cut into narrower-width coils with the help of cutting knives.

The material that is to be slit is made to go through the machine after which the steel rolls are moved through extremely sharp circular blades, making the cuts. This forms the process by which a stainless steel slitting coil is manufactured. Compressive forces are applied to the material after which when the forces exceed the tensile strength of the material, it slices. A steel slitting machine consists of three major parts: the uncoiler, the slitter, and the recoiler. Similarly, the process of steel coil slitting involves three necessary steps. These include uncoiling that flattens the metal, the slitter or blades ( knives) for cutting and a recoiler for winding the metal back into a coil.

What is the difference between cutting and slitting?

The process of cutting in the case of metals refers to the manufacturing process in which a larger piece of material is separated into smaller pieces or parts. A cut-to-length machine which is similar to a cutter is used in undergoing this process of cutting. A large roll of material can be cut to the size you want in this process. It is done through the system control, which outputs a dc voltage and controls the magnetic powder clutch produced by the resistance.

Slitting, on the other hand, as discussed above, is a metal manufacturing process where a coil of the said material is cut into different lengths and widths as required by the application it is being used for. The slitting machine only cuts once from the middle of the knife and the material slits into strips. The strips of these are stainless steel, copper, and so on. It is mainly used in steel processing plants.

How many types of slitting are there?

The process of Slitting that is used in industries can be categorized into three basic types. These are razor slitting, shear slitting, and score slitting (also known as crush slitting). The types are distinguished on the basis of the type of blade, knife, or device used to make the slit. We’ll discuss all three briefly one by one.

Razor slitting, as the name suggests, involves the usage of a razor blade or a series of razor blades. The blades are put onto a slitting machine that slices the material/ metal into desired widths. It can be made to work either slowly or quickly depending on its placement. Razor slitting is considered the best method of slitting out of the other three.

Shear slitting forms another of the types on which a two-part knife is used to make the cut. This type of slitting is considered ideal for fast conversion and is perfect for converting various types of thin materials with precision.

Last but not the least, score slitting, also known as crush slitting, involves the presence of a moving substrate that passes between a solid rotating anvil and a circular rotating knife or the crush slitter which consists of a series of knives. It is ideal for converting a wide range of substances of varying thickness and rigidity. This method is the most common out of the other three due to its easy execution.

What is a stainless steel coil used for?

The stainless steel coil slitting when done precisely is used in a variety of applications. Some of the common uses for stainless steel coils include usage in the manufacturing of surgical instruments, springs, heat, exchangers, and cutlery. There is extensive use of polished coil used in construction for handrails, decorative touches, and many more. The slit coils produced are used extensively in the largest growing industry of automobiles and for products such as automotive trim, electronics, medical devices, HVAC ducts, household appliances, springs, and more as such.

The slitting of a coil undergoes various processes and when these steps are taken cautiously, it results in pros such as reduced time-to-delivery, reduced scrap, reduced costs, and streamlined material flow. Additional industries that make use of the slit coils include aerospace, automotive, construction, consumer products, electronics, medical, truck, and trailer panels/doors as well as the oil and gas industry.

What is the SS coil minimum import price in Oman?

As per Volza’s Oman Import data, Oman imports most of its steel from India as well as other countries like the United States and Turkey. It is counted among the largest importers of Steel in the World. More than 1k shipments are done to Oman from more than 100 suppliers including stainless steel coil suppliers from all around the world.

Different types of steel products are imported at different prices from different countries. After imposing taxes, the prices that are getting exported from a certain country do get increased and the importing country also imposes some tax on the products. The imported goods and services are taxable at 5% VAT in Oman.

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