Essay --

Manufacturing process of CLAY BRICKSMost bricks atomic number 18 organise by one of two basic processes. Extrusion Fairly stiffed texture is change integrity with corpse body which is loaded into extruder worm screw force it into a blow over through pushing it along a barrel .depending upon how a lot clay will shrink in drying and firing process the die is made larger considering this The clay emerges as a continuous brick determine column. Initially this is smooth but it can be modified by removing a thin sliver from the top and sides using a taught conducting wire to produce a wiredrag effect or by placing textured rollers over the column to create a rusticated effect or even by blasting the column with sand. The clay column is then cut into wizard bricks and palletised ready for the dryers or in some factories, are loaded straight onto kiln cars. Extruded bricks can be solid but cannot be frogged & are mainly perforated. Soft mud mouldingSoft mud mouldingBricks are constituted in mould boxes through some number of processes . more methods can be applied but all have a common theme. A mould release medium stops the clay from sticking to the box (sand, oil or water) when soft clay is impel into a mould,. The bricks are turned out & the excess clay is stuck finish off from the top of the mould. This is done by hand by a journeyman who would create one brick at a moment. This is slow, expensive & labour intensive used In these days only for generating special shapes or ornamental bricks. For stock bricks large automated machines can be replicated the hand-making procedure often quicker by taking use of banks of mould boxes on a circuit where the boxes are filled with pre sanded clots of clay, washed, sanded struck off level and the formed brick turned out.... ...re than 60 F/h by introducing steam standard weight unit is generally cured at 150-165 F , whereas light weight at 170-185F . After reaching curing temperature steam flo w is eject down . closings are then left field for soak in dampish hot air for 12 18 hours. After this block is left for drying by exhausting moist air and further increasing the temperature of kiln which took virtually 24 hours.2) High pressure kiln pressure (autoclave) temperature is generally higher nearly 300-375 F and pressure is 80-185 psi block is left to soak for 10 hours , pressure is then decreased rapidly , because of which trapped moisture of block is released quickly. It is more costly process but it takes less time.Referenceshttp//www.madehow.com/Volume-3/Concrete-Block.htmlhttp//dcmsme.gov.in/reports/glass/HollowBricks.pdfhttp//www.ibstock.com/pdfs/technical-support/TIS16Howbricksaremade.pdf