directional solidification of a biella in foundry

[matteodr03]

in designing a baking tray with my colleagues we are questioning whether it is better to use coolers or add material to achieve directional solidification. to analyze the thermal modules we have thought to divide the biella into 8 parts, as seen in the image attached, our problem arises on the biella foot, in the light of this we thought to insert two internal coolers in 2 and 3 (as for this choice we have not found clear images of the abaco necessary for the sizing) rather than add material in 1 (the problem of this last choice is that then the solidification is no longer verified.photo of the biella

 

[meccanicamg]

You're young... and read the rules....presented... the common sense also says.

advice. Since it is very specific stuff you can contact a foundry and explain who you are and what you are doing and if they can give you some charts and some straight.

Then bring back here.

2-3 are eye of biella.
the biella foot or crank eye is near the big hole.

if you use magmasoft you can do the simulation and start seeing how the jet really behaves.
much depends also on casting alloys and initial temperatures.

casting coolers are devices or systems used in foundry processes to control the speed and distribution of molten metal cooling inside the mold.
imagine pouring molten metal into a mold: to get a good quality final product, it is essential that the metal solidifies in a controlled manner. too fast cooling can cause internal tensions and defects, while too slow cooling can lead to porosity formation.
What are the casting coolers for?* Cooling speed adjustment: allow to accelerate or slow cooling in specific areas of the mold, according to the needs of the piece to be produced.
* control of the direction of solidification: they direct the solidification of metal in a precise direction, favouring the formation of a more uniform crystalline structure and reducing the risk of defects.
* reduction of thermal tensions: contribute to reduce temperature differences within the piece during solidification, thus decreasing thermal tensions that can cause deformations or cracks.
* improvement of the quality of the final product: Thanks to precise cooling control, you get melted parts with better mechanical characteristics, lower defects and greater homogeneity.
Types of casting coolers:
* Water coolers: they are the most common. use water jets to specifically cool some areas of the mold.
* Air coolers: they are used for more gradual and uniform cooling.
* Cooling elements embedded in the mold: are channels or cavities inside the mold that are filled with a refrigerant.
* induction cooling systems: use electric currents to generate heat inside the mold, thus controlling the cooling speed.
factors affecting the choice of the cooler:
* Cast material type: metal thermal properties affect the choice of cooling system.
* piece geometry: the shape and size of the piece determine the distribution of the coolers.
* Product quality requirements: the desired mechanical and superficial characteristics influence the choice of the cooling system.

In conclusion, casting coolers are fundamental tools to ensure the quality of the products obtained through foundry processes. Thanks to precise cooling control, it is possible to obtain melted parts with optimum mechanical characteristics and a lower incidence of defects.

the arrangement of the coolers varies considerably according to the type of biella, the material, the casting process and the specific requirements of the manufacturer.
cooling types and related images:
1. external cooling of the mould:
* Cooling nozzles: these nozzles spray water or air directly on the mold, accelerating cooling in the desired areas.
* Cooling channels: they are cavities inside the mold filled with refrigerant.
2. indoor cooling:
* Cooled inserts: liquid-cooled metal elements, inserted in the mold, which absorb heat from the critical areas of the biella.
3. Indirect cooling:
* thermal plates: metal plates that lead heat from the hot areas of the biella to an external cooling system.

 

[meccanicamg]

but is this biella not divided into two parts in the foot? if the whole fund then throws it.