HMFL uses various methods like Moulding, Mould Inspection, Core Setting Inspection, Box Closing Inspection. Firstly, the moulding is done in the reinforced boxes using pneumatic hammers, the mould formed is checked for any kind of defect like sharp corners, Loose sand, cracks etc. the mould is also checked for proper hardness using a mould-hardness tester, then

Heat Treatment. The cores are properly set in the core prints or the chaplets so that there’s no movement in the lifting of the cores and boxes are using heavy overhead cranes and alignment is done by skilful workers using dowel pins. The tested scrap is melted under the strict control of chemical composition. After the final chemical analysis, the required quantities of pre-heated ferroalloys are added, after some core process designed by HMFL, the material is covered with ladle cover and APC. Casting is removed from the box after the desired temperature.

The risers and gating systems are removed using pneumatic hammers, torch cuttings surface etc cleaning is done.