Die Casting News

"Intro to Causes of Die Casting Porosity" - NADCA Highlight (proper die spray application)

Posted by Hill and Griffith Company on Jul 11, 2018 10:40:09 AM

The material presented in this video are some highlights from NADCA’s online webinar - Porosity Basics: Introduction to the Causes of Porosity.

To successfully manage and reduce porosity, one must first understand what causes porosity. This course will cover the physical causes of porosity. In particular, the sources shrink porosity formation and gas porosity will be explained. The course will conclude with traditional concepts for reducing porosity formation.

For information on purchasing a downloadable copy of this webinar in its entirety, please visit: diecasting.org/store/detail.aspx?id=WEB057

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Tags: Die Casting, diecasting, die casting gas porosity

"Manage Your Die Casting's Porosity" - (proper die spray application)

Posted by Hill and Griffith Company on Jul 3, 2018 8:55:02 PM

Join NADCA's Porosity Management Webinar Series

From the North American Die Casting Association (NADCA) web page.

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Tags: Die Casting, diecasting, die casting gas porosity

Porosity in Die Casting - NADCA Video Highlight

Posted by Hill and Griffith Company on Jun 27, 2018 3:35:17 PM

The material presented in this video are some highlights from NADCA’s online webinar - Porosity in Die Casting.

 

Four types of diecasting gas porosity problem characterizations:

1) Round pores - Precipitation in the liquid melt or in the beginning of solidification, unrestricted bubble growth, high H2 contraction required

2) Long, broad pores - Bubble formation with still high liquid factor, arrangement between growing bubbles and dendrites, high to medium H2 concentration

3) Long, fissured pores - Bubble formation during formation of the dendrite network, bubble expansion limited by still open melt channels, medium to low H2 concentration

4) Small, fissured pores - Precipitation shortly before the end of solidification, shape and size of pores determined by closed interdentritic spaces, low H2 concentration

Learn more about diecasting porosity from this earlier post, "Gas Porosity And Surface Die Casting Defects"

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Tags: Die Casting, diecasting, die casting gas porosity

ASTM Proposes New Standards for Zinc Diecasting

Posted by Hill and Griffith Company on Jun 20, 2018 2:44:58 PM

One proposal would improve high-temp Zn-Al-Cu alloy; another would define composition for high-fluidity alloy

ASTM International’s Committee on Nonferrous Metals and Alloys proposed two new standards: one for a zinc-aluminum-copper alloy with improved strength; another for determining requirements for thin-wall diecastings.

Zinc alloys are used to design diecastings because of their hardness, self-lubricating properties, dimensional stability, and high modulus make them suitable for working mechanical parts, like gears and pinions. Zinc also offers thermal and electrical conductivity and precise casting tolerances, which are useful for heat sinks, electrical components and applications requiring electromagnetic shielding.

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Tags: Die Casting, diecasting, die casting lubricant, Hydraulic Fluid System Troubleshooting, die casting lubricant management, die casting lubricant computer simulation, zinc aluminum copper alloy

Die Casting Lubrication & Die Cooling Computer Modeling

Posted by Hill and Griffith Company on Jun 13, 2018 4:53:03 PM

NADCA will be hosting a Computer Modeling Workshop on July 24, 2018 in Grand Rapids MI.

Computer modeling and simulation has become common place for designing die casting dies. Flow simulation and solidification allow engineers to design gates, runners, overflows and vents to optimize the die casting process for a part. An important, but often overlooked, part of die casting modeling and simulation is thermal control.

Where should water and oil lines be placed?
How does the software account for cooling/heating lines?
How can simulation time be minimized for water/cooling lines?
Is die casting lubrication spray simulated and how does it affect the thermal controls?

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Tags: Die Casting, diecasting, die casting lubricant, Hydraulic Fluid System Troubleshooting, die casting lubricant management, die casting lubricant computer simulation

NADCA Offers Course on Die Casting Machine Maintenance (including die casting lubricant management)

Posted by Hill and Griffith Company on Jun 6, 2018 11:24:26 AM

The material presented in this video are some highlights from NADCA’s online webinar - Mechanical Maintenance & Evaluation of Die Cast Machines: Die Casting Machine Primary Mechanical Structures.

The first in the Mechanical Maintenance & Evaluation of Die Cast Machines series covers topics related to the major mechanical support structures of die casting machines; the machine base, rails, platen supports, wear pads, die carriers, tie bars and bushings.

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Tags: Die Casting, Permanent Mold, diecasting, die casting lubricant, Automotive Die Casting, Hydraulic Fluid System Troubleshooting, die casting lubricant management

SME - Manufacturing Processes - Die Casting (including die casting lubrication and application)

Posted by Hill and Griffith Company on May 30, 2018 4:35:04 PM

Die casting is a high precision, rapid parts-production process involving the high pressure injection of molten metal into a die having a cavity of the desired part shape.

Part of the Fundamental Manufacturing Processes Video Series, this program explores the common die cast metals and their various properties, as well as die casting machines and die cast tooling. The die casting machines segment covers in detail both the hot-chamber and the cold-chamber machine types. Also discussed is the importance of die casting lubrication and application in die casting, clamping systems, the use of accumulators and pressure intensifiers, and machine controls and automation. The die cast tooling segment examines the various die production materials and techniques. In addition, terms such as cover die, ejector die, fixed cores, movable cores core pulls, venting, die cooling, and draft angles are clearly defined. For more information and to purchase, visit http://www.sme.org/fmp service@sme.org | 800.733.4763 | http://www.sme.org/store

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Tags: Die Casting, Metal Casting, diecast, diecasting, Aluminum Die Casting Process, die casting release agent

Thermal Control of Die Casting Molds for Optimal Performance

Posted by Hill and Griffith Company on May 26, 2018 11:00:04 PM

Controlling the temperature of a die casting die through the location of cooling lines is critical to performance and die life.

A properly designed system of water and/or oil lines will process heat energy so the die can be operated productively with the highest part quality possible. NADCA has created a three level approach to addressing thermal control. This series is broken down by beginner, intermediate and advanced courses suitable for people with varying levels of knowledge in this area.

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Tags: Die Casting, Metal Casting, diecast, diecasting, Aluminum Die Casting Process, die casting release agent, Thermal Control of Die Casting

Innovative Die Castings Wanted for Die Casting Design Competition

Posted by Hill and Griffith Company on May 16, 2018 1:25:29 PM

In a competitive global market, customers take notice of the best. NADCA knows that competition improves the competitor. With its annual, International Die Casting Competition, it recognizes and rewards the outstanding casting designs of the year.

Entering and winning is one of the best ways to gain visibility with leading decision-makers. The competition is open to aluminum, magnesium, zinc die castings and other alloy families. Any number of castings may be entered. However, a separate entry form is required for each casting or assembly of castings. In addition, the metal surface cannot be improved or concealed by tumbling, shot blasting, coating or other surface treatments.

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Tags: Die Casting, diecasting, die casting lubricant, Die Casting Process

Lecture Series on Die Casting Process

Posted by Hill and Griffith Company on May 9, 2018 5:50:40 PM


By Dr. D. Benny Karunakar, Department of Mechanical and Industrial Engineering, National Programme on Technology Enhanced Learning, India

For more details on NPTEL.

Good morning friends. In our previous lectures, we have learned about sand casting. We have seen how to make the sand mold and how to get the sand casting. Then, we have learned about casting defects. Then, we have learned about melting and pouring practices. Then, we have learned about important cast metals and alloys. Now, today, we will switch over to another important phase of metal casting that is the die casting process. Now, what is this die casting? Why should we go for die casting? Let us see. First of all, what is the drawback of sand molding process and why we should switch over to die casting?

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Tags: Die Casting, diecasting, die casting lubricant, Die Casting Process

 


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