Skip to main content

Foundry Tools and Equipments

Some important foundry tools and equipments are shovel, riddle, rammer, slick, lifter, swab, bellow, trowel, gate cutter, gaggers, moulding boxes and moulding machines.

1. Hand tools

The following hand tools are commonly employed in preparing the mould in foundry:

(a) Shovel

A shovel consists of a square pan fitted with a wooden handle. It is used for mixing and for moving the sand from one place to another in the foundry.

(b) Riddle

A riddle has a standard wire mesh fixed into a circular or square wooden frame. It is used for cleaning the moulding sand.

(c) Rammer

A hand rammer is made of wood or metal. It is a short rammer and is used for packing and ramming the sand for bench moulding. The floor rammer is similar in construction, but have long handles. It is used for floor moulding or for ramming large moulds. The peen rammer has a wedge-shaped end and is used for setting into corners and pockets of the mould. The pneumatic rammer is an automatic rammer operated by compressed air. It is used in large moulds saving considerable labour and time.

(d) Slick

A slick is a double ended tool having a flat on one end and a spoon on the other. It is used for repairing and finishing the mould surfaces after the pattern is withdrawn.

(e) Lifter

A lifter is made of thin sections of steel of various width and lengths with one end bent at right angles. It is used for smoothing and cleaning out depressions in the mould.

(f) Swab

A simple swab has a small brush having long hemp fibres. A bulb swab has a rubber bulb to hold the water and a soft hair brush at the open end. It is used for moistening the sand around the edge before the pattern is removed.

(g) Bellow

A hand operated bellow is used to blow loose particles of sand from the cavities and surface of the mould.

(h) Trowel

It consists of a metal blade with a wooden handle. The small trowels of various shapes are used for finishing and repairing mould cavities as well as for smoothing over the parting surface of the mould.

(i) Gate cutter

It is a U-shaped piece of thin sheet. It is used for cutting a shallow trough in the mould to act as a passage for the hot metal.

(j) Gaggers

These are iron rods bent at one end or both ends. These are used for reinforcement of sand in the top of the moulding box and to support hanging bodies of sand.

2. Moulding boxes (Flasks)

The sand moulds are prepared ·in a specially constructed boxes called flasks, which are open at the top and bottom. They are made in two parts, held in alignment by dowel pins. The top part is called the cope and the lower part as drag. If the flask is made in three parts, the intermediate part is called a cheek. These flasks can be mad of either wood or metal.

3. Moulding machines

The various types of moulding machines are as follows:

(a) Jolt machine

It is used for ramming of sand in the mould . This machine rams the sand harder at the pattern face with decreasing hardness towards the back of the mould.

(b) Squeezing machine

This machine rams the sand harder at the back of the mould and softer on the pattern face. It is very useful for shallow patterns.

(c) Jolt-squeeze machine

This machine produces uniform hardness of sand in the mould.

(d) Sand slinger

It is used for uniform packing of sand in the mould.

(e) Diaphragm moulding machine

It is used for uniform ramming and hardness of the sand in the flask.

(f) Stripping plate machine

It is used to draw the pattern from the mould.

Comments

Popular posts from this blog

Are Engineers Favourite Among Girls?

What do girls think about men who are engineers and what type of engineers are most favourite among girls? A survey was conducted by a team of aboutmech with members chosen from different countries. Each team member carried out a neutral survey in his/ her country to evaluate what females think about most of the engineers from different engineering branches. An overview of different questions asked in survey is given below: Question: Which male engineers do you find more attractive as a husband? Almost 50% women voted for mechanical engineers to be the most attractive husbands among other engineers. So mechanical engineers are most favourite among girls as a husband. They find them more trustworthy, intelligent, and creative. A married women from California said, “If your husband is a mechanical engineer, he will help you in everyday tasks. Because mechanical engineers are good team players and they have creative ideas about everything.” Which male engineers do you find mo

Best CV Format for Mechanical Engineers

Fifty percent engineers fail to grab a dream job because of basic faults in their CVs/ Resume. This article tells you about best CV format for mechanical engineers and how you are supposed to design your CV when applying for jobs. You CV is your first impression on future employer. He/ she does not know you. Your CV is the only representation of your personality. He/ she may select or reject you after first glance on your resume.  I have experienced shortlisting and interviewing candidates for different jobs. I was astonished to learn that most of the candidates simply copy paste each others CVs without any changes at all. These types of CVs are rejected immediately. I am not trying to tell you that you should avoid copying, rather i ma telling you to refrain from giving your CV to your friends. An ideal CV consists of following portions: Name/ Address of the applicant Objective Education Record Employment History Professional Skills Awards & Achievements Co

Engineering Mechanics - Introduction

The Engineering Mechanics is that branch of Engineering-science which deals with the principles of mechanics along with their applications to engineering problems. It is sub-divided into the following two main groups: (a) Statics, and (b) Dynamics The Statics is that branch of Engineering Mechanics which deals with the forces and their effects, while acting upon the bodies at rest. The Dynamics is that branch of Engineering Mechanics which deals with the forces and their effects, while acting upon the bodies in motion. It is further sub-divided into the following two branches: (i) Kinetics, and (ii) Kinematics The Kinetics is that branch of Dynamics, which deals with the bodies in motion due to the application of forces. The Kinematics is that branch of Dynamics which deals with the bodies in motion without taking into account the forces which are responsible for the motion.