TOPCRAFT Precision Molders is a complete plastics manufacturer.
RLT Industries is a professional sales organization with over 25 years of sales experience headquartered in Dayton, Ohio.
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to Topcraft HomepageClassifications of Injection Molds up to 400 Tons
The following contains a brief synopsis of the various mold classifications and the detailed descriptions of each mold class.
Class 101 Mold - Cycles:
One Million or More: Description: Bulk for extremely high production. This is the highest priced mold and is made with only the highest quality materials.
We guarantee there will be no mold maintenance charges for the life of the program when continuously run by Topcraft
1. Detailed mold design required.
2. Mold base to be minimum hardness of 280 BHN
3. Molding surfaces (cavities and cores) must be hardened to a minimum of 48 R/C range.
4. Ejection should be guided.
5. Slides must have wear plates.
6. Temperature control provisions to be in cavities, cores and slide cores whenever possible.
7. Over the life of a mold, corrosion in the cooling channels decreases cooling efficiency thus degrading part quality and increasing cycle time. It is therefore recommended that plates or inserts containing cooling channels be of a corrosive resistant material or treated to prevent corrosion.
8. Parting line locks are required on all molds.
Class 102 Mold - Cycles:
Not Exceeding One Million: Description: Medium to high production mold good for abrasive material and/or parts requiring close tolerances. This is a high quality, fairly high priced mold.
1. Detailed mold design required.
2. Mold base to be minimum hardness of 280 BHN.
3. Molding surfaces should be hardened to a 48 R/C range. All other functional details should be made and heat treated.
4. Temperature control provisions to be directly in the cavities, cores, and slide cores wherever possible.
The following items may or may not be required depending on the ultimate production quantities anticipated.
a) Guide Ejection
b) Slide Wear Plates
c) Corrosive Resistant Temperature Control Channels
d) Plated Cavities
Class 103 Mold - Cycles:
Under 500,000: Description: Medium production mold. This is a very popular mold for low to medium production needs. Most common price range.
1. Detailed mold design recommended.
2. Mold base must be a minimum hardness of 165 BHN.
3. Cavity and cores must be 280 BHN or higher.
4. All other extras are optional.
Class 104 Mold - Cycles:
Under 100,000: Description: Low production mold. Use only for limited production preferably with non-abrasive materials. Low to moderate price range.
1. Mold design recommended.
2. Mold base can be mild steel or aluminum.
3. Cavities can be of aluminum, mild steel or metal.
4. All other extras are optional.
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