Vacuum Die-Casting Venting Filter to Block Melt Carryover

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Solution Overview

Problem

Existing vacuum-assisted pressure die casting systems face issues with air inclusions in the casting chamber leading to defects in the workpiece due to trapped air bubbles, which can cause material damage and shape defects, and the solidification of melt in the suction hole blocks the underpressure device, necessitating extensive maintenance.

Innovation Solution

A venting device with a detachable design and a filter unit that allows air to be evacuated while retaining melt, connected to the casting chamber and evacuation device, preventing contamination and facilitating easy replacement.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If an underpressure system is used to evacuate air from the casting chamber, then air inclusions are prevented, but melt solidifies in the suction hole blocking the device

Engineering Contradiction:

Improveprevention of air inclusionsVSAvoidmaintenance of underpressure device

Core Design Contradiction:

ReliabilityVSEase of repair

Solution Approach 1:

A filter unit is introduced as an intermediary component between the casting chamber and the underpressure device. This filter unit captures and retains the melt that is suctioned along with air, preventing the melt from solidifying in the suction hole and blocking the underpressure device. The filter unit serves as a mediator that protects the underpressure device while maintaining its functionality.

Inventive Principle:

Principle #24Intermediary (Mediator)

Solution Approach 2:

The filter unit is designed as a disposable or easily replaceable component. When the filter unit becomes saturated with melt, it can be quickly removed and replaced with a fresh one, avoiding extensive maintenance and repair work on the underpressure device itself. This approach prioritizes ease of maintenance over long-term durability of the filter unit.

Inventive Principle:

Principle #27Cheap short-living objects (Disposable)

2Reliability

If a venting device with filter unit is introduced, then melt is retained and evacuation device is protected, but device complexity increases

Engineering Contradiction:

Improveprotection of evacuation deviceVSAvoidstructure of venting device

Core Design Contradiction:

ReliabilityVSDevice complexity

Solution Approach 1:

The venting device is segmented into distinct functional components: a filter unit for retaining melt, an outflow channel for air evacuation, and connection portions for integration with the casting chamber and underpressure device. This segmentation allows each component to perform its specific function efficiently while keeping the overall structure modular and manageable.

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

The venting device is designed with multi-functionality, serving both as a protective barrier for the evacuation device and as an integrated part of the casting chamber system. The filter unit protects the evacuation device, while the outflow channel enables air removal, making the single component perform multiple essential functions.

Inventive Principle:

Principle #6Universality (Multi-functionality)

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 venting device effectively prevents air inclusions and protects the evacuation device from contamination, ensuring high-quality workpieces and reducing maintenance efforts, with a durable and economical solution.

Implementation Method 1

the gas contained within the pressure die casting tool being evacuated from the pressure die casting tool by means of an underpressure system

Methodology Applied

Scientific EffectPressure difference: Pressure Gradient

Implementation Method 2

a filter unit (06) disposed in the outflow channel (03) for retaining the melt in the outflow channel (03)

Methodology Applied

Scientific EffectFiltration: Filter (physical)

Data Source

PatentUS20260027615A1Venting device, casting device with venting device, vacuum die-casting system and method for operating the vacuum die-vcasting system

Publication Date: 2026.01.29 INTERGUSS GIESSEREIPROD

AI summary

The invention relates to a venting device (01) for venting a casting chamber (11) by means of an evacuation device (12), wherein the venting device (01) has a base body (02) having an outflow channel (03) which is formed within the base body (02) and having an insertion portion (04) for being connected to the casting chamber (11) in a detachable and fluid-conducting manner and having a connection portion (05) for being connected to the evacuation device (12) in a detachable and fluid-conducting manner, wherein air can flow out through the outflow channel (03) when evacuating the casting chamber (11) and a filter unit (06) is disposed in the outflow channel (03). Furthermore, the invention relates to a casting device (10) comprising at least one casting chamber (11) having a casting chamber wall (13). Furthermore, the invention relates to a casting device (10) comprising at least one casting chamber (11) having a casting chamber wall (13), and to a vacuum-assisted pressure die casting system (100) having a casting device (10) and to a method for operating a vacuum-assisted pressure die casting system (100).