Metal Casting Zone Info Blog

Posts Tagged ‘Foundry’

Aluminum Pour in a Home Built Foundry

This will be a multi part video on foundry pattern making. A wooden pattern is used to make an impression in the sand mold. A silica sand core is inserted to produce the cylinder bore in the casting. A wooden pattern of the cylinder is turned on the Clausing lathe.

Large Gray Iron Plates for Workholding Made in China

We made these large plates for our client in USA. Their material is Gray Iron Class 35, with Brinell hardness BH 160-220. Their weights are from 60kg to 300kg per piece. Two front and back surfaces need to be grinded to Rz3.2. This is very smooth as mirror. There is no any sand holes or air holes on any surfaces or inside. This requirement is very high. These plates must be stress released by electric oven/furnace. Otherwise, the inside stress will cause the tiny deformation in the future. During machining, you have to machine them step by step. If you machine too much allowance in one time, the machining will cause the deformation, and this plate will be failed. Moreover, you have to find a large surface-grinding machine / flat grinder to grind it by one time.

As for the casting process, the resin sand moulding process will be necessary since the resin sand moulding can effectively prevent the deformation during cooling period.

Our iron foundry has produced these plates for over two years. Actually, we have not made them very well yet. We have not reduced the defective rates to low yet. This is also because of the typical shortcoming for sand castings. You never can prevent the air holes, sand holes and small shrinkage. We have bought a portable X-ray detector to check the inside shrinkage and sand holes, but we can not completely prevent the inside flaws. 

For more information about gray iron plates, please check Dandong Foundry’s Blog.

For more information about our company, please check Dandong Foundry.

More Cast Iron Plate Articles

Making quality casting since 1960!!

Product Description
HELL’S FOUNDRY INC. SOFTDASH FLH 96-07 BK HFSD-58497-96MB

HELL’S FOUNDRY INC. SOFTDASH FLH 96-07 BK HFSD-58497-96MB

The venerable firm of Mackenzie & Harris, established in 1915, is the oldest and largest type foundry for letterpress printers in the United States. Also known as M & H Type, it offers traditional lead typecasting and Monotype composition as well as hot metal fonts. This tour, part of an A&E Open Book show, takes viewers through the foundry and into the pressroom of Arion Press where the type is impressed into paper. The tour features an interview with Lewis Mitchell, who has been casting type at M & H for over 50 years. This is part two of the show; the first part can be viewed at: www.youtube.com For more information about M & H Type see: www.arionpress.com

Product Description
This is an EXACT reproduction of a book published before 1923. This IS NOT an OCR’d book with strange characters, introduced typographical errors, and jumbled words. This book may have occasional imperfections such as missing or blurred pages, poor pictures, errant marks, etc. that were either part of the original artifact, or were introduced by the scanning process. We believe this work is culturally important, and despite the imperfections, have elected to bring it back into print as part of our continuing commitment to the preservation of printed works worldwide. We appreciate your understanding of the imperfections in the preservation process, and hope you enjoy this valuable book.

Shop and Foundry Practice: Patternmaking. Foundry Work. Blacksmithing and Forging

Making quality casting since 1960!!

www.GTEgaming.com A cool glitch that is like a “portal” tutorial will be released soon.

The venerable firm of Mackenzie & Harris, established in 1915, is the oldest and largest type foundry for letterpress printers in the United States. Also known as M & H Type, it offers traditional lead typecasting and Monotype composition as well as hot metal fonts. This tour, part of an A&E Open Book show, takes viewers through the foundry and into the pressroom of Arion Press where the type is impressed into paper. The tour features an interview with Lewis Mitchell, who has been casting type at M & H for over 50 years. This is part two of the show; the first part can be viewed at: www.youtube.com For more information about M & H Type see: www.arionpress.com