SMC Compression mould usually use hydraulic press machine and the cavity and core is fixed to top and bottom platens of machine. Once the SMC material is placed into the open mould, the machine closes, mould get heated, then the press pressure force material to flow all over the SMC mould.
Variable pressure can be used during the mould close phase. A shear edge zone in the perimeter of the cavity enables air to pass through, the small amount of material that escapes through the sheer edge results in “flash”. Flash is necessary by-product of compression moulding due to the needs to expel air during the moulding process by overfilling the mould cavity. Compression parts need to be de-flashed to have good finish.
SMC mould design follows similar rules as for any other production process with the plastic industry. But before you build a SMC mould, there are certain things need to be considered.The first and most important is shear edge.
SMC(sheet molding compounds) is a fiber reinforced thermoset material often used for large parts where highr strength is needed.
| Mold type | smc compression moud of reinforcing plate for automotive door |
| Cavity and core steel | P20 |
| Slider/lifter/cams | 1.2344 (H13) |
| Cavity/imprint | 1 |
| Ejection system | Ejector pins, ejector plates driven by hydralic cylinders |
| Heating system | Oil heating system /steam and electrical are optional |
| Mold finish | Technical polishing grain 400 + chrome plating |
| Vacuum system | Included |
| IMC system | |
| Cycle time | 6 minutes |
| Mold life | 200,000 shots |
| Mold type | Serial mold |
| Our Serive | MDF report / mold flow analysis |
| Weekly process report with photos | |
| Quality control team following project | |
| Trial report with video and free samples | |
| Sample and mould dimension report | |
| Optional service | bulk production |
| primer, top coating | |
| assembling & packing |
To obtain high quality products, it is important to optimize the mould design and processing conditions, and Toolex is your best choice. In 2010, Toolex were approached by a large Australian caravan conglomerate who was seeking solution for the supply of complete SMC assembled product. In involves mould design and manufacturing, moulding component, de-flashing, drilling, surface coating, assembly, stock and quality control. We have successfully produced over half million products that have become one of their key supplier with an unblemished record of quality and service. The various compression parts have become an industry standard in Australia.
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