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Die Casting News

NADCA - Online Education System - Free access to six courses

Posted by Hill and Griffith Company on May 22, 2019 3:24:44 PM

The North American Die Casting Association Offers a self-paced education through their online education system.

Online education and training offer students the convenience of taking courses anywhere and the ability to complete courses at their own pace. In addition, companies and individuals can save money on travel expenses and reduce time away from the office. The online education system is populated by taking weekly recordings of our webinars and converting them into online classes.
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Tags: Die Casting, Die Casting Lubricant, Die Casting Process, Die Casting Process Control Theory, Die Casting Surface Defects, NADCA, die casting soldering defects

GRIFLUBE® Bio-Syn Biodegradable Hydraulic Fluid

Posted by Dr. Morris Murphy on May 15, 2019 2:44:21 PM

GRIFLUBE® Bio-Syn will readily biodegrade as defined by OECD 301 C; and will easily exceed the 60% minimum biodegradability standard, converting CH3-CH2 molecular groups to CO2 within a maximum of 7 days, which exceeds the biodegradability rate of any polyether or polyol ester type fluid.


Hill and Griffith is pleased to submit the following technical information on our Factory Mutual approved fire resistant GRIFLUBE® Bio-Syn hydraulic fluid, as the proactive chemistry of choice for high production foundries, steel mills, casting operations, refineries, and any application which might be predisposed to elevated temperature extremes and have the potential for fire. GRIFLUBE® Bio-Syn was researched and designed as a superior biodegradable fire resistant hydraulic fluid, in comparison to conventional polyol esters, PAG/polyethers, and especially phosphate esters; to offer greater latitude relative to toxicological and environmental compliance, enhanced fire resistance, and maximum lubrication value, for extended wear characteristics in vane and axial piston pumps.

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Tags: Die Casting, Die Casting Lubricant, Die Casting Process, Die Casting Process Control Theory, GRIFLUBE® Bio-Syn Biodegradable Hydraulic Fluid

NADCA - Thermal Control Webinar Series - Diecasting

Posted by Dr. Morris Murphy on May 8, 2019 9:29:10 AM

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, Die Casting Lubricant, Die Casting Process, Die Casting Process Control Theory, NADCA, Dr. Morris Murphy

Die Casting Award at CastExpo 2019

Posted by Hill and Griffith Company on May 2, 2019 3:46:57 PM

An Outstanding Achievement award was on display at CastExpo 2019 for this T1XX side door mirror, reinforcement bracket.

It was made by Magna Cosma Casting Michigan, Battle Creek, Michigan. The material is aluminum alloy, 5S-F temper. The process is high-pressure, vacuum die casting. The weight is 1.31 pounds. The dimensions are 14.5 inches by 6.4 inches by 15.4 inches. The application is for attachment points and load carrying for truck side door mirror. The customer is General Motors.

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Tags: Die Casting, CASTEXPO, Die Casting Lubricant, Die Casting Process, Die Casting Process Control Theory

"The Basics of Permanent Mold," Metal Casting Design & Purchasing magazine article review

Posted by Hill and Griffith Company on Apr 24, 2019 4:37:02 PM

Known for its ability to achieve tight tolerances, superior surface finishes and high mechanical properties, permanent mold is a quality option for many applications.


Fig. 1. This aluminum transmission main housing was cast via semi-permanent mold using 27 sand cores.

Unlike sand and plaster molding processes, where the mold is recycled after every part, the molds used in permanent mold casting can be used to produce thousands of components before they have to be repaired. The permanent mold casting process is known for its ability to achieve tight tolerances, superior surface finishes and high mechanical properties. Its ability to achieve these details is based on the fundamental principle of this process—the pouring of molten metal into reusable metal molds.

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Tags: Die Casting, Die Casting Lubricant, Die Casting Process, Die Casting Process Control Theory, Metal Casting Design & Purchasing Magazine

NADCA, "Take a Detailed Dive into the Various Methods of Diecasting Process Control"

Posted by Dr. Morris Murphy on Apr 17, 2019 12:10:10 PM

It is important to know what type of control method is applicable to each of the die casting machine/die/process systems.

North American Diecasting Association (NADCA) has created a three level approach to addressing process control. This series is broken down by beginner, intermediate and advanced courses suitable for people with varying levels of knowledge in this area. Learn more at this NADCA page.

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Tags: Die Casting, Die Casting Lubricant, Die Casting Process, Die Casting Process Control Theory, NADCA Education

NADCA Video Highlight - Why Diecasting Plunger Shot Monitors are Important

Posted by Hill and Griffith Company on Apr 10, 2019 4:40:58 PM

The material presented in this video are some highlights from NADCA’s online webinar - Basic Diecasting Machine Operator Training: Why Shot Monitors are Important

Many die casting process variables affect the final porosity level in a casting. This course will discuss the effect of these different parameters on porosity. It will connect these processing parameters back to the underlying porosity formation mechanisms covered in the first porosity course. Start solving porosity by optimizing your process parameters for reduced porosity. For information on purchasing a downloadable copy of this webinar in its entirety, please visit: http://www.diecasting.org/store/detai...

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Tags: Die Casting, Die Casting Lubricant, Tim Cowell, Die Casting Porosity, Die Casting Gas Porosity, NADCA Video Highlight

NADCA Video Highlight - Control Diecasting Porosity with Processing Parameters

Posted by Hill and Griffith Company on Apr 3, 2019 5:07:54 PM

The material presented in this video are some highlights from NADCA’s online webinar - Porosity Basics: Control Porosity with Processing Parameters

Many die casting process variables affect the final porosity level in a casting. This course will discuss the effect of these different parameters on porosity. It will connect these processing parameters back to the underlying porosity formation mechanisms covered in the first porosity course. Start solving porosity by optimizing your process parameters for reduced porosity. For information on purchasing a downloadable copy of this webinar in its entirety, please visit: http://www.diecasting.org/store/detai...

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Tags: Die Casting, Die Casting Lubricant, Tim Cowell, Die Casting Porosity, Die Casting Gas Porosity, NADCA Video Highlight

NADCA Video Highlight - Basic Diecasting Operator Training

Posted by Hill and Griffith Company on Mar 27, 2019 9:52:04 PM

The material presented in this video are some highlights from NADCA’s online webinar - Basic Operator Training: Recognizing and Controlling Flow Defects.

The operator will learn how to recognize flow (surface) defects and what causes these types of defects. This course will address various operating parameters that impact flow defects, such as die temperature, die spray, cooling line flow rate, fill time and metal temperature. The operator will also learn corrective measures that can be taken to reduce and control flow defects, including preferred operating ranges for the various parameters.

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Tags: Die Casting, Die Casting Lubricant, Tim Cowell, Die Casting Porosity, Die Casting Gas Porosity, NADCA Video Highlight

Part 4/4 - Die Casting Porosity Causes and Solutions

Posted by Hill and Griffith Company on Mar 20, 2019 6:00:52 PM

By Tim Cowell, Hill and Griffith Company, Technical Director

Shrink Porosity (Temperature)

Note that the temperatures that effect the location of shrink die casting porosity are inside the casting itself. The die temperatures will influence the internal casting temperature, but they are not always effective in controlling it completely. Shrink porosity in a heavy section will be harder to move, shrink porosity in a thin section will be relatively easy to move. Complex shapes may respond different than you think.

Since the location of shrink porosity is also the hottest spot in that section of the casting, it is usually in the center of a heavy section. This hot spot location can be controlled to some extent by die temperature. The hot spot can often be moved by changing the die temperature - but this doesn’t reduce the porosity much - it just moves it.

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Tags: Die Casting, Die Casting Lubricant, Tim Cowell, Die Casting Porosity, Die Casting Gas Porosity

 


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