Sieve shaker of Molding Sand.
Description
Timer and switch are provided on the panel. The instrument consists of 10 sieves, lid, and pan. The sidebar on the shaking mechanism are made specially to accommodate 10 number of sieves
Presetting
Fix the instrument on a strong and sturdy base which can withstand the vibration of the instrument during shaking label the instrument by leveling knobs.
Remove the clamping device by pulling the knobs of side flexible bar. Take out the set of sieves. Check the timer and switch for the OFF position. Connect the single-phase A.C supply.
Operating Instruction
Use a soft brush for cleaning sieves and pan. Arrange a set of sieves having the pan at the bottom and the coarsest sieve on top.
Take 100 gms of dried and washed. Put the lid.
Keep entire sieves set on shaking mechanism. Slide the clamping device on two side flexible bars and clamp the set of sieves with the help of knurled screws provided. Set the timer for desired sieving time (Average time of the cycles is recommended as 10 min.).
Put “ON” the switch. After completing preset timing the sieving will stop automatically.
Disconnect the supply. Remove the clamping device. Weight the grains remaining on the indusial sieves.
It is recommended to weight each empty sieve before the test and again after the test along with sand the sand, the difference between two will give an accurate weight of grains
Learn also: Foundry meaning in Hindi
Is sieve operation number in Micron? | Weight in gms. On Sieves | % Retained =b | Multiplying factor | Product |
A | B | C | D | E =C X D |
1700 | 5 | |||
850 | 10 | |||
600 | 20 | |||
425 | 30 | |||
300 | 40 | |||
212 | 50 | |||
150 | 70 | |||
106 | 100 | |||
75 | 140 | |||
53 | 200 | |||
Sieve Pan | 300 |
Methods for fineness number:-
Formula
E Total of E
Fineness number = _________ = ___________
C Total of C
Precaution:-
· Keep the instrument clean and tidy.
· Remove sand grains from each sieves using a soft brush.
· Before tighten the knob ensure the sieves are fitted exactly into each other.
· Do not rotate the timer knob in an anti-clockwise direction.