Guidelines for optimal mold temperature control
In general, the cooling system will be roughly drilled or milled. Rough inner surfaces enhance turbulent flow of coolant, thus providing better heat exchange. […]
In general, the cooling system will be roughly drilled or milled. Rough inner surfaces enhance turbulent flow of coolant, thus providing better heat exchange. […]
Cast to the net shape mold blanks–Another effective measure used to extend mold life is the use of cast to net shape tools with their as-cast gating system and cast to net shape mold cavity. […]
Repair by welding–Permanent molds made of steel exhibit longer life because deteriorated areas may be repaired by conventional welding. […]
Replaceable in serts–One possible solution may be the use of replaceable inserts that can be put in the sprue well area. […]
Grind the mold area and create a new sprue well by enlarging the old one- This practice is only a temporary cure yielding mixed results. Though the mold is repaired, […]
All water-cooling systems require proper maintenance to ensure the passages do not become clogged with scale from minerals in the water. To combat this issue, […]
Spray or Vaporization Cooling of Permanent Molds-In this cooling system design,vertical passages in the mold are sprayed with water from nozzles located in the top manifold. […]
The cooling technique also presents problems during the drilling of the passages.This method allows drilled cooling passages to be placed precisely in the mold; […]
Air-cooling represents one of the simplest methods of permanent mold cooling. However, this method has limited cooling capabilities because the heat transfer from the mold to the air often isn’t fast enough for the production levels required by most foundries. […]
A variety of different designs for water-cooled permanent molds exist each with its own advantages and disadvantages. […]