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Types of Hacksaw Blades, Classification and Uses

Types of Hacksaw Blades, Classification and Uses

Types of Hacksaw Blades, Classification & Uses

A hacksaw is a handy and user-friendly cutter that cuts objects quickly and precisely. Choosing an accurate hacksaw blade with the proper tooth per inch (TPI) and durable build is vital to supply easy, straight, and precise cutting. Although every hacksaw works in the same way, there are differences between these tools' blades. Pipe or metal are the intended surfaces for a hacksaw. Knowing which of the three types of hacksaw blades is best for the job is crucial because they are designed to be used on various kinds of cut metal.

How to Use a Hacksaw?

There are two sorts of hacksaw frames: The primary features a fixed length while the opposite can take blades of various sizes. With a hacksaw, you can cut any type of metal. Where you've got the thin metal to chop, you'll only need a blade with fine teeth.

Parts of a Hacksaw

The following are the two most important parts of a hacksaw:

  • Hacksaw frame
  • Hacksaw blade
  • Adjustable screw
  • Adjustable wingnut
  • Stud
  • Handle

Hacksaw Frame

In shape, it's just like the English letter "C." On one end of those arms, a handle is fixed, and on the opposite end, a pin is set. A hacksaw blade is fitted on the pins then it's tightened consistently with the help of a wing nut. Basically, there are two types of hacksaw frames:

  • Fixed Hacksaw Frame: For making this sort of hacksaw frame, a one-piece flat iron strip or pipe is bent at a right angle. In these sorts of hacksaw frames, only hacksaw blades of a selected size are often fixed, not of the short size or extended size. Two types of handles are used: Straight handle and pistol type handle.

  • Adjustable Hacksaw: Its structure may differ from a hard and fast frame in these sorts of hacksaw frames. The frame is formed in two parts. These parts are often adjusted at different distances. Therefore during this adjustable hacksaw, big and little hacksaw blades of various standards are often used.

The setting of Blade Teeth

The teeth of hacksaw blades are also bent to the left or right side, as the ordinary saw is used to cut wood. The bending of teeth is understood because of the setting of teeth. With these teeth setting, the hacksaw blade cuts and squeezes the metal of slightly more thickness than that of the blade.

Therefore, due to this slot, the blade doesn't grind to a halt while operating it. If the setting isn't done, there's an excellent risk that the blade will grind to a halt within the metal and become broken.

Types of Hack Saw Blades

Types of Hack Saw Blades

On the idea of metal of the work, differing types of hacksaw blades are utilized in a hacksaw. These are made from wolfram steel and hot-work steel, and they are hardened and tempered. The classification of hacksaw blades depends on three main factors:

  • Size of the blade.
  • How many dents are made on the blade in one inch?
  • Nature of the blade.

Following are the six main types of hacksaw blades:

  1. Course Grade Hacksaw Blade

Hacksaw blades of this grade are employed to cut the thickness of low-carbon steel, copper, aluminum, and brass. There are 14–18 teeth per inch.

  1. Medium Grade Hacksaw Blade

This type of hacksaw blade is employed for cutting all types of metals like forged iron, alloy steel, aluminum, brass, high steel, etc. From 20 to 24 teeth per inch are cut during this hacksaw blade.

  1. Fine Grade Hacksaw Blade

The Fine Grade Hacksaw Blade has 24 to 30 dents per inch and is perfect for cutting thin pipes, sheets, tubes, etc.

  1. Superfine Grade Hacksaw Blade

This hacksaw blade is used for cutting extraordinary solid metals and thin metal sheets. There are 30 to 32 dents per inch during this sort of hacksaw blade.

In all the hacksaw blades of varied grades mentioned above, teeth are cut on one or both sides.

  1. All Hard Blades

Such blades are hardened and tempered only, except for the ends having holes. These are used for cutting articles, forged iron, mold iron, etc.

  1. Flexible Blade

Flexible blades are elastic, and there's less risk of their being broken. Thin sheets, pipelines, curves, etc., are all cut with these blades.

Choosing The Right Blades

The following criteria determine which blade is best:

  • Type of material: The type of material to cut is the crucial factor to consider while selecting the right blades for your projects. Cutting hard materials like metal requires more TPI blades for an efficient finish. Whereas safe materials like aluminum, require few TPI blades for cutting actions. Additionally thicker materials can be cut using fewer TPI. Thinner materials, on the other hand, can be cut using more TPI blades.

  • Coarseness of blades: Coarseness of blades can also be a consideration while selecting the right blade. Coarse blades are able to cut thick materials like solid bar stock, pipe, etc, which require blades with fewer TPI. These blades remove stock quickly.

  • Medium coarse blades: They are able to cut a wide range of materials like sheet metal. They produce clean and precise cuts. Fine blades are suitable for thin materials like sheet metals and non-ferrous metals. Fine blades have more teeth and generate smooth and fine cuts.

Previous article Alex Parker (@parkers_speed_and_fab)

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