General Concepts 3 min read
Steps Involved In Making A Sand Mold
1. Initially a suitable size of molding box for creating suitable wall thickness is selected for a two piece pattern. Sufficient…
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Properties Of Moulding Sand
The basic properties required in molding sand and core sand are described as under. Refractoriness Refractoriness is defined as the…
General Concepts 3 min read
Kinds Of Moulding Sand
Molding sands can also be classified according to their use into number of varieties which are described below. Green sand…
General Concepts 8 min read
MOLDING SAND
The general sources of receiving molding sands are the beds of sea, rivers, lakes, granulular elements of rocks, and deserts.…
General Concepts 4 min read
FLASKS
The common flasks are also called as containers which are used in foundry shop as mold boxes, crucibles and ladles.…
General Concepts 7 min read
Hand Tools Used In Foundry Shop
The common hand tools used in foundry shop are fairly numerous. A brief description of the following foundry tools (Fig.…
General Concepts 3 min read
Design Considerations In Pattern Making
The following considerations should always be kept in mind while designing a pattern. 1. All Abrupt changes in section of the…
General Concepts 3 min read
Core Box
Any kind of hollowness in form of holes and recesses in castings is obtained by the use of cores. Cores…
General Concepts 2 min read
Core And Core Box
Cores are compact mass of core sand that when placed in mould cavity at required location with proper alignment does…
General Concepts 4 min read
Pattern Allowances
Pattern may be made from wood or metal and its color may not be same as that of the casting.…
General Concepts 4 min read
Types Of Pattern
The types of the pattern and the description of each are given as under. 1. One piece or solid pattern…
General Concepts 1 min read
Factors Effecting Selection Of Pattern Material
The following factors must be taken into consideration while selecting pattern materials. 1. Number of castings to be produced. Metal…