WEL COMETO

COE RAC SECTOR

MODULE 1

BASIC WORKSHOP PRACTICE

LESSON 15

HACKSAW FRAME AND BLADE

OBJECTIVES

• Identify the parts of a hacksaw frame

• Specify hacksaw blade.

• State the different types of hacksaw frame

and their uses.

Parts of hacksaw frameThe hand hacksaw is used along with a blade to cut metals of different sections it is also used to cut slots and counters

Types of Hacksaw Frames

The two diiferenrs types of hacksaw frames are

1.Solid frame2.Adjustable frame

a. Adjustable flat typeb. Adjustable tubular type

1.Solid frame

• Only a particular standard length of blade can be fitted to this frame

2. Adjustable Hacksaw frame

Different standard lengths of blade can be fitted ti this frame

Hacksaw Blades

A hacksaw blade is a thin narrow steel band with teeth and two pin holes at the ends. It is used along with a hacksaw frame. The blade is made either low alloy steel (HS) and is available in standard lengths of 250 mm and 300 mm .

Parts of the blade

Type of hacksaw blades

1. All hard blades

2. Flexible blades

Pitch of the bladeThe distance between adjacent teeth is known as the pitch of the blade

Setting of the sawStaggered setting Wave setting