V-Shaped Molten Metal Flow Dividing Block for Uniform Casting
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Conventional casting technologies face issues with non-uniform molten metal flows after division, thermal shock resistance of ceramic feed tips, and high costs due to vacuum systems, leading to casting defects and increased manufacturing costs.
Innovation Solution
A casting method and device utilizing a V-shaped molten metal flow dividing block made of ceramics, an electromagnetic pump driven by AC power, and a control unit to maintain the molten metal sustain position above the V-shaped portion, ensuring uniform flow and reducing thermal shock.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Speed
If a sudden change in molten metal flow direction is caused by collision with the cutter, then the molten metal flow direction changes by 90 degrees, but this causes a difference between left and right flows resulting in casting defects
Solution Approach 1:
The molten metal is sustained above the V-shaped portion before the actual casting process begins. This preliminary positioning ensures that when the metal flows into the sprue runners, it does so uniformly without sudden directional changes that would cause casting defects. The V-shaped portion acts as a pre-positioning structure that guides the metal flow in advance.
2Temperature
If ceramics with excellent heat insulation performance are used for the feed tip, then heat insulation is improved, but the ceramics are weak against thermal shock resulting in relatively short lifetime
Solution Approach 1:
The feed tip is preheated to a temperature close to that of the molten metal before the casting process begins. This preliminary heating prevents sudden thermal shock when the hot metal contacts the ceramic feed tip, thereby extending its service life while maintaining excellent heat insulation performance.
3Reliability
If a vacuum chamber and vacuum pumps are used for depressurization, then molten metal circulating performance is enhanced and cavity formation is suppressed, but the casting device becomes expensive
Solution Approach 1:
The expensive vacuum chamber and vacuum pump system is removed from the casting device. Instead, the patent uses a simple depressurized container that achieves the same effect of enhancing molten metal circulation and suppressing cavity formation without the need for complex vacuum equipment.
4Manufacturing precision
If the V-shaped portion is filled with molten metal during repeated casting, then uniform flows after division are achieved, but the sustain position must be maintained above the V-shaped portion
Solution Approach 1:
The molten metal itself serves to fill and maintain the V-shaped portion during repeated casting operations. The sustained molten metal automatically fills the V-shaped portion, creating a self-regulating system that ensures uniform flow division without requiring additional control mechanisms.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The solution achieves uniform molten metal flows, extends the lifespan of ceramic components by minimizing thermal shock, and reduces manufacturing costs by eliminating the need for expensive vacuum systems.
Implementation Method 1
a pouring mechanism that includes an electromagnetic pump which uses an electromagnetic force to pump the molten metal
Implementation Method 2
When the electromagnetic pump is driven by an AC power supply, a fine pressure change occurs in the molten metal. This pressure change disrupts the solidification of the molten metal
Data Source
AI summary
According to a casting method, a molten metal is sustained at a sustain position between a casting and the next casting, and the molten metal flow is divided from one pouring gate (44) to a plurality of sprue runners (46 and 47) in the casting. The sprue runners (46 and 47) are branched by a V-shaped portion (45) in a V-shape, and the sustain position of the molten metal is set above (any one of P1, P2 and P4) the V-shaped portion (45). The V-shaped portion (45) is filled with the molten metal while a repeated casting is carried out.