Mold Classification Information for SPI Class 101-103 molds from the Society of Plastics Industry Inc "Customs and Practices of the Mold Making Industry".


Mold Classification Information for SPI Class 101-103 molds from the Society of Plastics Industry Inc "Customs and Practices of the Mold Making Industry".
Crescent Industries, Inc provides SPI class 101, 102 and 103 molds and Injection molding. We all pledge our best effort to satisfy our customer's needs regarding their expectations of quality, customer service, value, delivery and innovation.

The following classifications are guidelines to be used in obtaining quotations and placing order for uniform types of molds. It is our desire through these classifications to placing order for uniform types of molds. It is our desire though these classifications to help eliminate confusion in the mold quote system and increase customer satisfaction.

The following contains a brief synopsis of the various mold classifications and the detailed descriptions of each mold class up to 400 Tons.

Class 101 Injection Mold

o Cycles: 1 Million or more

o Built for extremely high production, this is the highest priced mold and is made with only the highest quality materials.

o Detailed mold design required.

o Mold base to be minimum hardness of 280BHN.

o Molding surfaces (cavities and cores) must be hardened to a minimum of 48 R/C range. All other details should also be hardened tool steels.

o Steels moving against one another should be dissimilar and have hardness differential of at least 4 Rockwell "C".

o Ejection should be guided.

o Slides must have wear plates.

o Temperature control provisions to be in cavities, cores and slides wherever possible.

o It is recommended that plates and inserts containing cooling channels be of a corrosive resistant material or treated to prevent corrosion. Corrosion in the cooling channels decreases cooling efficiency thus degrading part quality and increasing cycle times.

Class 102 Injection Mold
o Cycles: Not exceeding one million

o Built for medium to high production, good for abrasive materials and/or parts requiring cost tolerances. This is a fairly high quality, fairly high priced mold.

o Detailed mold design required.

o Mold base to be minimum hardness of 280BHN.

o Molding surfaces (cavities and cores) must be hardened to a minimum of 48 R/C range. All other details should be made and heat treated.
o Temperature control provisions to be directly in the cavities, cores and slides wherever possible.

o Parting line blocks are recommended for all molds

o The following (guided ejection, slide wear plastics, corrosive resistant temperature, control channels, plated cavities) may or may not be required depending on the production quantities anticipated. It is recommended that the production quantities be made a firm requirement for quoting purposes.

Class 103 Injection Mold
o Cycles: Under 500,000

o Built for medium production. This is a very popular mold for low to medium production needs. Most common price range.

o Detailed mold design recommended.

o Mold base to be minimum hardness of 165BHN.

o Cavity and cores must be 280BHN or higher.

o All other extras are optional.

Crescent Industries Inc follows the above SPI guidelines when quoting and manufacturing injection molds. We utilize our expertise as injection molders and the most advanced technologies and equipment to produce injection molds in sizes from 3.5" x 5" up to 24" x 30" in a variety of materials and configurations. For more information on Crescent Industries' mold making capabilities please click here.

How important to you consider these guidelines when receiving tooling quotes? Crescent Industries, Inc is a full service Mold manufaturer and meets all Class 101, Class 102 & Class 103 guidelines. For more information, please call 1-800-411-3844, email sales@crescentind.com or visit our website www.crescentind.com,

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