SMC is a flat sheet-like compound manufactured by spreading long strands of chopped glass fiber & under-saturated polyester/phenolic/vinyl & acrylic modified resins to produce a high-strength moulding compound. SMC material is used in the compression moulding process. SMCs are generally used to mould parts in complex shapes. This thermoset material is suitable for making automotive parts, high-strength electrical parts, corrosion resistance needs, and various structural components because of its outstanding capabilities, surface appearance, and electrical insulation. SMC is normally supplied in rolls, which are split into smaller pieces called "charges". Compression moulding is a procedure that uses heat and pressure to create anything from basic shapes to complex mould products.
Compression moulding is a manufacturing process in which a pre-determined amount of moulding materials are pre-heated and compressed into the desired form using two heated mould cavities. It is a high-volume, high-pressure moulding technique for complicated, high-strength fibreglass reinforcements. Thermoset composites are the most common type of material used in compression moulding & SMC is a thermoset material. It has the advantage of being able to mould large, fairly complex parts. Furthermore, when compared to other moulding methods such as transfer moulding and injection moulding, it is one of the least expensive; additionally, it wastes relatively less material, giving it an advantage when working with expensive compounds. Manufacturers who are used to working with metal parts will find it very simple to convert a metal object into a compression moulding part.
Step 1. Paste Reservoir releases a measured amount of specified resin paste onto a plastic carrier film.
Step 2. This Film passes under a chopper which cuts the fiber (Glass fiber/carbon fiber) onto the surface.
Step 3. Once these have moved to the depth of the resin paste another sheet is added on top of the fiber like a sandwich.
Step 4. Later these sheets are firmly pressed together and then stored in a form of a roll at a pre-determined thickness.
Step 5. Then these sheets are allowed to mature for 48 hours.
The rising cost of cast metals is pressuring manufacturers to consider alternate materials of metal. As thermoset components have very unique properties-exceptional strength, lightweight, corrosion resistance, exceptional thermal properties, and electrical non-conductance it makes them more desirable over other materials available. The sheet moulding compound (SMC) market report analyses the growth, which is currently growing due to the above-mentioned reasons.
Here are some fields of application:
Only mentioning a few of the properties of SMC demonstrates its unique standing as a high-performance, inexpensive - highly lucrative material class with great future possibilities.