- Test 003: 11022023_ iron melting

Operation steps:

Sand operation steps:

1. Sand purification
2. Put the sand in an iron pot
3. Pour a little water on the sand (helps create the sand shape)
4. Create the sand shape
5. Heating the sand in three stages to dry it and conserving shape

Iron preparation steps:

1. Cutting iron (30*60)
2. The weight of the iron
3. Heating iron (low degree)

Iron melting operation steps

1. Starting: 1: 32 pm
2. Heating stage 1: 1600 wat for 3 min
3. 
4. Heating stage 2: 3000 wat for 5 min
5. 
6. Heating stage 3: 5000 wat for 2 min
7. 
8. Putting the pieces 650 g of iron within 10 min
9. 
10. Melting iron within 10 min
11. 
12. Cooling of system within 10 min
13. Switch of the system

Result:

Obtain a piece of iron has the same shape as the sand and pure

A piece has some holes and voids

Corrosion of graphite crucible

Analysis of the test results:

• The reason of piece holes and voids is for let the melting iron in the shape without pressure
• we get a graphite crucible corrosion because of this crucible is not intended for melting iron

What we have to do:

• Use a crucible for melting iron
• Manufacturing of piston to press the melting iron in the sand shape