Nested Die Casting Pipe Connection Prevents Molten Metal Clogging
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Solution Overview
Problem
Die casting apparatuses experience clogging due to misalignment of electromagnetic pump and molten metal supply pipes, leading to solidified molten metal accumulation and reduced maintainability.
Innovation Solution
The die casting apparatus design includes an electromagnetic pump pipe and a molten metal supply pipe with a sealed connection, where the electromagnetic pump pipe extends into the molten metal supply pipe, preventing molten metal from remaining and solidifying by allowing it to flow without steps, and features a heater to prevent solidification, along with a sealing material to prevent leakage and oxidation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If a flange joint with sealing material is used to connect the electromagnetic pump pipe and molten metal supply pipe, then the pipes can be assembled together, but misalignment occurs causing steps inside the pipe where molten metal remains and solidifies, leading to clogging
Solution Approach 1:
The electromagnetic pump pipe is inserted into the molten metal supply pipe, with the upper end side of the electromagnetic pump pipe extending inside the molten metal supply pipe. This nested configuration eliminates steps and misalignment issues that cause clogging, while maintaining sealed connection through the insertion structure.
2Ease of operation
If the pipes are connected with a flange joint, then assembly is simplified, but the connection creates steps inside the pipe leading to molten metal accumulation and solidification
Solution Approach 1:
The electromagnetic pump pipe is nested within the molten metal supply pipe, eliminating the step formation that causes molten metal to remain and solidify. The insertion structure ensures smooth flow path without accumulation points.
Solution Approach 2:
The heater is provided on the upper end sides of the pipes before molten metal flow to prevent solidification. This preliminary heating action prevents the harmful effect of molten metal solidification at the connection point.
3Ease of manufacture
If the upper end sides of the pipes are connected with a flange joint, then the connection is straightforward, but oxidation can occur and maintainability is reduced
Solution Approach 1:
The nested insertion structure provides a more reliable connection that prevents oxidation and improves maintainability. The electromagnetic pump pipe extending inside the molten metal supply pipe creates a seamless flow path that is easier to maintain and repair.
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
This design prevents clogging, improves maintainability by reducing the need for frequent cleaning, and ensures efficient molten metal flow, while maintaining a sealed environment to prevent oxidation.
Implementation Method 1
an electromagnetic pump pipe provided with an electromagnetic pump pumps up molten metal from a molten metal holding furnace to an uppermost part
Implementation Method 2
a heater may be provided on the upper end sides of the electromagnetic pump pipe and the molten metal supply pipe
Data Source
AI summary
The invention provides a die casting apparatus which pumps up molten metal from a molten metal holding furnace through an electromagnetic pump pipe provided with an electromagnetic pump, supplies the pumped-up molten metal to an injection sleeve through the molten metal supply pipe connected with the electromagnetic pump pipe, and a cavity of a die is charged with the molten metal by injecting the molten metal by using an injection tip. An upper end side of the electromagnetic pump pipe and an upper end side of the molten metal supply pipe are connected with each other. The upper end side of the electromagnetic pump pipe is inserted into the upper end side of the molten metal supply pipe, and extends inside the molten metal supply pipe.