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Questions and Answers
Vices are the most suitable and widely used tools for ______ different jobs in position during various operations carried out in a fitting shop.
Vices are the most suitable and widely used tools for ______ different jobs in position during various operations carried out in a fitting shop.
gripping
Bench Vice is the most commonly used vice sometimes also known as ______ jaw vice.
Bench Vice is the most commonly used vice sometimes also known as ______ jaw vice.
parallel
The ______ of the hand in filing should also be applied only during the forward stroke and relieved during the return stroke.
The ______ of the hand in filing should also be applied only during the forward stroke and relieved during the return stroke.
pressure
Pipe vises are used in ______ to hold pipes or tubing secure while they're cut or threaded.
Pipe vises are used in ______ to hold pipes or tubing secure while they're cut or threaded.
Pipe vises can hold pipes as small as 3 mm in diameter, or as large as ______ mm.
Pipe vises can hold pipes as small as 3 mm in diameter, or as large as ______ mm.
As far as possible, try to use ______ length of the file during the operation.
As far as possible, try to use ______ length of the file during the operation.
Forging is a cost effective way to produce ______ or near-net-shape components.
Forging is a cost effective way to produce ______ or near-net-shape components.
The ______ is used for heating purpose during the smithy operation.
The ______ is used for heating purpose during the smithy operation.
The ______ block is used for squaring, sizing, heading, bending, punching and forming operations.
The ______ block is used for squaring, sizing, heading, bending, punching and forming operations.
The ______ is an important smith's tool used for supporting the work while hot metal hammering.
The ______ is an important smith's tool used for supporting the work while hot metal hammering.
______ are used for holding square shanks of swages, fullers etc. while working on the anvil.
______ are used for holding square shanks of swages, fullers etc. while working on the anvil.
Virtually all ______ can be forged.
Virtually all ______ can be forged.
The ______ refers to the tool's primary use of measuring the accuracy of a right angle (90 degrees).
The ______ refers to the tool's primary use of measuring the accuracy of a right angle (90 degrees).
The Universal surface guage is a most ______ instrument used in markings.
The Universal surface guage is a most ______ instrument used in markings.
Forging refers to the production of those jobs which must be heated in a ______ furnace.
Forging refers to the production of those jobs which must be heated in a ______ furnace.
Smithy is defined to handle relatively ______ jobs only.
Smithy is defined to handle relatively ______ jobs only.
The work is normally performed by means of heavy ______, forging machines, presses etc.
The work is normally performed by means of heavy ______, forging machines, presses etc.
The normal plastic range for steels and high-strength alloys is from about 1038°C to about ______°C.
The normal plastic range for steels and high-strength alloys is from about 1038°C to about ______°C.
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Study Notes
Forging and Smithy
- Forging is a cost-effective way to produce net-shape or near-net-shape components and can be used for virtually all metals.
Tools and Equipment Used in Smithy and Forging
- Smith's forge or hearth:
- Used for heating purposes during smithy operation
- Made of cast iron or cast steel with a four-legged support, hearth, chimney, and hood
- Has an opening for air supply and a water tank for quenching
- Anvil:
- Important tool for supporting work during hot metal hammering
- Has a hardie hole (square shape) for holding swages, fullers, etc.
- Has a pritchel hole (circular shape) for bending rods and hot punching
- Swage block:
- Made of cast steel with different shaped slots and through holes
- Used for squaring, sizing, heading, bending, punching, and forming operations
- Hammers, tongs, hardie, fullers, and swage punch and drift are other tools used in smithy and forging.
Fitting Work Tools
- Classified into four categories:
- Job holding devices (e.g., vices)
- Striking tools
- Cutting tools
- Measuring, marking, and testing tools
Job Holding Devices
- Vices:
- Most suitable and widely used tools for gripping different jobs
- Types: parallel jaw vice/bench vice, leg vice, pipe vice, and hand vice
- Bench vice is the most commonly used in general fitting work
- Pipe vise:
- Used in plumbing to hold pipes or tubing secure while cutting or threading
- Can hold pipes from 3 mm to 200 mm in diameter
Measuring, Marking, and Testing Tools
- Universal surface gauge:
- Used for layout work and inspection
- Consists of a rigid base, a spindle carrying a scriber in a universal clamp, and a surface plate
- Used for marking and checking the accuracy of a right angle (90 degrees)
Forging and Smithy Shop (Primary Shaping Processes)
- Smithy:
- Defined as handling relatively small jobs only
- Work is carried out using hand hammers or small power hammers
- Forging:
- Production of jobs that require heating in a closed furnace
- Work is normally performed using heavy hammers, forging machines, and presses
- Implies the use of powerful pressure on metal heated to its plastic range
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