The Hill and Griffith Company
1085 Summer Street - Cincinnati, OH 45204
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Green Sand Metalcasting Foundry News

Metal Casting Foundry Supplies

Posted by Hill and Griffith Company on Dec 12, 2017 3:33:07 PM

New Brochure: Casting Solutions - Hill and Griffith's Green Sand Foundry Supplies help achieve the E.P.A.'s M.A.C.T. standards and reduce Benzene Emissions.

In 1896 when John Hill founded the Hill and Griffith Company, the concept of quality was adopted. He stated, "Hill and Griffith feels that the integrity of the company must be represented in the metal casting foundry supplies, products and services bearing our names and labels."

Today, this tradition still lives on.

Since it was founded, The Hill and Griffith Company has been recognized for many firsts. We have contributed form mold release agents, and metal and concrete casting lubricants to the industry. With ongoing investment in research and development, Hill and Griffith has achieved unparalleled leadership with the introduction of new technologies, as well as quality supplies.

Mission Statement
Our mission is to continually improve the company’s products and services in a manner that will meet or exceed our customers’ needs and expectations.

CORPORATE OFFICE
1085 Summer Street, Cincinnati, OH 45204
800-543-0425 • P: 513-921-1075 • 
F: 513-921-9180

INDIANAPOLIS MANUFACTURING & FACILITY
3637 Farnsworth Avenue, Indianapolis, IN 46241
800-428-3102 • P: 317-241-9233 • 
F: 317-248-7725

Warehouse Locations:
Cincinnati, OH
Indianapolis, IN
Hueytown, AL
Charlotte, NC
Delafield, WI
Milwaukee, WI

 

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Tags: Metal Casting, Green Sand Casting Products, Green Sand Foundry Supply, foundry supply, metal casting supplies, foundry supplies, green sand casting, Green Sand Metal Casting, Green Sand System, green sand metalcasting, Green Sand Foundry Premix, Foundry Additives Glossary, aluminum-metalcasting-guide

"B" - Glossary of Foundry Additives

Posted by Hill and Griffith Company on Dec 5, 2017 3:07:16 PM

B - Foundry Additives Glossary

BAGASSE (See: CELLULOSE-WOOD FLOUR)
Is the residue left after grinding sugar cane and extracting the juice. The shredded fibers are largely used as a fuel, but it has found various uses as a cellulose material in the foundry sand mixtures. Bagasse has been substituted for wood flour and other cellulose addi­tives, but it is hygroscopic, and many foundries have frowned upon its use, It is most difficult to produce bagasse in a commercial form so as to economically prepare it for the foundry market. Unless a foundry is near a ready source of bagasse, the economics make it practically prohibitive to compete against commercially accepted cellulose additives.

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Tags: Metal Casting, Green Sand Casting Products, Green Sand Foundry Supply, foundry supply, metal casting supplies, foundry supplies, green sand casting, Green Sand Metal Casting, Green Sand System, green sand metalcasting, Green Sand Foundry Premix, Foundry Additives Glossary

Gift idea for your favorite metalcaster - Aluminum Metalcasting Guide

Posted by Hill and Griffith Company on Nov 28, 2017 11:34:41 AM

This holiday season, get the metalcaster on your list the ultimate aluminum resource. Aluminum Casting Technology, 3rd Edition, is available for purchase in the AFS Store.

Loaded with 554 pages of colorful charts, graphics, and text, this book is a favorite among metalcasters. The updated edition builds on previous versions with five brand new chapters and seven upgraded ones. New chapters include:
 
• Casting Process Simulation
• Solidification
• Semi-Solid Mold Processes
• Metal Matrix Composites
• Additive Manufacturing & Rapid Prototyping

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Tags: Metal Casting, Green Sand Casting Products, Green Sand Foundry Supply, foundry supply, metal casting supplies, foundry supplies, green sand casting, Green Sand Metal Casting, Green Sand System, green sand metalcasting, Green Sand Foundry Premix, Foundry Additives Glossary, aluminum-metalcasting-guide

"A" - Foundry Additives Glossary

Posted by Hill and Griffith Company on Nov 21, 2017 3:54:41 PM

A - Foundry Additives Glossary

ABSOLUTE ALCOHOL (See: ALCOHOL-ETHYL ALCOHOL)

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Tags: Metal Casting, Green Sand Casting Products, Green Sand Foundry Supply, foundry supply, metal casting supplies, foundry supplies, green sand casting, Green Sand Metal Casting, Green Sand System, green sand metalcasting, Green Sand Foundry Premix, Foundry Additives Glossary

Green Sand Foundry Premix - Minor Ingredients

Posted by Hill and Griffith Company on Nov 14, 2017 11:00:27 PM

The term "Minor Ingredient" does not adequately represent the performance of the materials that are added to a Premix!

Consider the application of Soda Ash (Sodium Carbonite) in Green Sand Foundry Premix Technology. The addition of 0.5% Soda Ash into a Premix will reduce agglomerated sand grains, balance the pH and improve the Bentonites' ability to mull into a Green Sand system. However, the addition of 5.0% Soda Ash will destroy a Green Sand System. Since the addition of 0 to 5.0% of a material into a Premix Formula is considered a "Minor Ingredient", the addition of too much Soda Ash will be catastrophic. Therefore, the term "Minor Ingredient" is truly a mis-representation of the value of the material.

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Tags: Metal Casting, Green Sand Casting Products, Green Sand Foundry Supply, foundry supply, metal casting supplies, foundry supplies, green sand casting, Green Sand Metal Casting, Green Sand System, green sand metalcasting, Green Sand Foundry Premix

Environmentally Friendly Sodium Silicate Binders

Posted by Hill and Griffith Company on Nov 7, 2017 9:33:12 PM

Corosil (Silicate Products) - Application to Aluminum Castings Sodium Silicate based products are one of the most environmentally friendly products that can be used in a core room.

The Indianapolis Manufacturing Facility has an excellent product line of Sodium Silicate Binders (Corosil and COBond). There have always been problems associated with the application of sodium silicate binders. The principal problem is in their inability to "shakeout" of a casting. The term "shakeout" applies to the ability or inability to remove the bonded sand from the solidified casting. As everyone would appreciate, if a foundry cannot remove the sand from the casting easily their costs of producing the casting would increase. In comparison, the less environmentally friendly processes do not have the severe difficulty of "shakeout".

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Tags: Metal Casting, Green Sand Casting Products, Green Sand Foundry Supply, foundry supply, Green Sand Release Agents, metal casting supplies, foundry supplies, green sand casting, Green Sand Metal Casting, Green Sand System, green sand metalcasting, core binders, Foundry Core Coating, core adhesive

Selecting A Core Adhesive For A Shell Core

Posted by Hill and Griffith Company on Nov 1, 2017 1:26:40 PM

It is extremely important to select the correct adhesive to receive the maximum efficiency out of the selected product.

There are a number of adhesive applications that must be considered. A shell core may employ an adhesive immediately after the core is removed from the box (the core will be extremely hot and this is not the preferred time to apply an adhesive), the core may be "warm to the touch" and when the core is sufficiently cool. It is important to realize that there is not a single adhesive for all of these applications.

When a shell core is extremely hot it is very difficult to apply an adhesive that will create a sufficient bond to maintain the strength at the joint of the core. The only adhesive that will meet this application is a water based core adhesive that is designed for "thermal curing" (oven curing). The product that we recommend for this application is Red Chief. However, it very important to realize that this is not the best application time for any core adhesive.

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Tags: Metal Casting, Green Sand Casting Products, Green Sand Foundry Supply, foundry supply, Green Sand Release Agents, metal casting supplies, foundry supplies, green sand casting, Green Sand Metal Casting, Green Sand System, green sand metalcasting, core binders, Foundry Core Coating, core adhesive

Green Sand Foundry Sand Control

Posted by Hill and Griffith Company on Oct 24, 2017 4:03:13 PM

Effects of Chemical Surfactants on Clay-Bonded, Green Sand Foundry Sand Control Systems

A 1-1/2 year research project by several companies lends help to understanding the role of chemical surfactants to the industry

AFS Foundry Sand Additives Committee (4-H) 

Searching for the most direct method to determine the effect of chemical surfactants (wetting agents) on clay-bonded systems, member companies of AFS Committee 4-H decided a series of L-8 orthogonal arrays would be the ideal technique.

Once the orthogonal array was se­lected, the variables and levels were determined (Table 1).

During the laboratory experimental evaluations, a series of chemical surfactants was evaluated. These surfactants were selected from products used in the foundry industry.

Prepared sand mixtures were com­pleted in a research environment A testing laboratory muller with a 20-lb capacity was employed. The sand mix­ture was consistently prepared by mulling a four-screen silica sand for 10 min­utes with 7% bentonite. A total of 60 L-8 designed experiments were completed during the evaluation phase.

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Tags: Metal Casting, Green Sand Casting Products, Green Sand Foundry Supply, foundry supply, Green Sand Release Agents, metal casting supplies, foundry supplies, green sand casting, Green Sand Metal Casting, Green Sand System, green sand metalcasting, Foundry Core Coating, Vein reduction

Green Sand Foundry Vein Reduction

Posted by Hill and Griffith Company on Oct 17, 2017 5:18:52 PM

Reducing Surface Defects With Proper Vein Reduction

While green sand foundry vein reduction compounds can lead to improvements in iron castings — such as reduction in metal penetration and core erosion — they can result in varying degrees of tensile property reduction.

As casting surface quality becomes increasingly important to end-users, foundries have to find new and effective methods of eliminating surface defects in iron castings.

One method — vein reduction compounds — is used primarily to reduce or eliminate expansion defects, which show up as “veins” on the surface of the casting. Foundries have achieved reductions in expansion defects and imprints in casting quality with mixtures of 90% prepared sand and 10% vein compounds.

However, the key to vein reduction compound use is to be careful when adding the compounds into core sand mixtures, as they can result in varying degrees of reduction in mold tensile properties. This reduction is due primarily to the composition of the materials and the sizing.

This article will take a look at the process of vein reduction and what casting surface quality improvements can result.

Fig. 1. The middle location on this test casting was made with a phenolic urethane binder without the addition of a vein reduction compound. The locations at the left and right both used vein reduction compounds.

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Tags: Metal Casting, Green Sand Casting Products, Green Sand Foundry Supply, foundry supply, Green Sand Release Agents, metal casting supplies, foundry supplies, green sand casting, Green Sand Metalcasting Foundry, Green Sand Metal Casting, Green Sand System, green sand metalcasting, Foundry Core Coating, Vein reduction, metalcasting

Feeling Out Green Sand Conditioning

Posted by Hill and Griffith Company on Oct 11, 2017 12:31:30 PM

• This article looks at the characteristics metalcasters should be looking for in their sand systems.

• Explained within is the role additives play in creating ideal molding sand characteristics.

For many metalcasters, there is no substitute for the smooth and silky feel of perfect green sand conditioning. While there have been many improvements in sand conditioning practices to achieve this feel, tests designed to determine ideal sand characteristics remain sub-jective, causing foundries to rely somewhat on guesswork.

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Tags: Metal Casting, Green Sand Casting Products, Green Sand Foundry Supply, foundry supply, Green Sand Release Agents, metal casting supplies, foundry supplies, green sand casting, Green Sand Metal Casting, Green Sand System, green sand metalcasting, Foundry Core Coating

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