What preparations need to be done before the induction melting furnace melts?

① Induction melting furnace must be inspected before melting, including furnace body, electrical appliances, machinery, water cooling, temperature measurement, pouring, etc.;

② The furnace must have the proper vacuum and air leakage rate during smelting;

③ The raw materials meet the requirements of technical regulations, and the ingredients are accurate;

④ The crucible has good knotting and sintering quality;

⑤ Develop a suitable process.