| 摘要 |
<p>A repair paste agent containing components that become an alloy is directly applied to a surface of a metal mold having a crack so as to cover the crack part, then the surface of the repair paste agent is coated with a solution which is made by adding silicone oxide (SiO2), alumina (AI2O3) and graphite (C) tp alcohol, and dry the solution to form a fireproof film which does not transmit gas on the surface of the repair paste agent, then a powder of Magnesium chloride (Mgcl2) or Sodium chloride (Nacl) is deposited on the surface of the film, and the surface of Magnesium chloride (Mgcl2) or Sodium chloride (Nacl) is baked, and the base metal surface where os outside penumbra of the crack avoiding the part which the paste impregnated by a burner, after the temperature of the penumbra become high, then heat the powder of the Magensium chloride or Sodium chloride until the powder liquefies, and remove the Magnesium chloride or Sodium chloride liquefied by a flame spouting out from the burner.</p> |
