History of manufacturing parts by casting method

**What is Casting (Polyester)?**
Casting is a manufacturing process that involves pouring a liquid material into a mold with a hollow cavity of the desired shape. The material then undergoes solidification, creating a solid object that matches the mold’s shape. Numerous industries use this technique to create complex and adaptable parts, from sculptures to automotive components.

**How Does Casting (Polyester) Work?**
Several steps are involved in casting. First, a mold closely resembling the desired product is made, typically from metal, sand, or ceramic. Then, a liquid material, such as molten metal, is poured into the mold cavity. This material takes the shape of the mold as it cools and solidifies. When the cast object is completely solid, the mold is removed to reveal it.

**How is Casting (Polyester) Used in Production?**
Casting is a common manufacturing technique used to produce a wide range of complex parts and goods. Manufacturers can produce intricate geometries and precise designs using molds to shape liquid materials like molten metal. This process is essential for creating items of varying dimensions, shapes, and complexity for different markets, including jewelry, automotive, and aerospace industries.

**Which Industries Use Casting?**
Numerous industries, including automotive, aerospace, construction, jewelry, and consumer goods, widely use casting. For engine components, casting is crucial in the automotive industry. Casting is a key aerospace component for complex aircraft parts. It is used in the construction sector for building decoration. Jewelry designers use casting to create intricate ornaments, and consumer goods include various cast items like tools and home appliances.

In the previous section, we explained the polyester casting system and how it works. In this section, we intend to introduce several practical and suitable products made with unsaturated polyester resin Kimiya 714 and 721, which are used in home decor and interior design, and provide you with information about their functional properties. The active team of Alborz Organic Materials Engineering Company is always available to answer questions and consult on the production and manufacturing of cast products with unsaturated polyester resin in industry and for various applications.

Products made with unsaturated polyester resin Kimiya 714 and 721 (various kitchen tables and countertops) using the casting method possess the timeless elegance of granite and marble, as well as the hardness and strength of concrete and steel. Kitchen and modern countertops offer a wide range of products in this industry to match your style and budget, allowing you to personalize your space. Optimized marble, Corian, onyx, and special solid surfaces (countertops) are products related to kitchen countertops that offer many advantages to users. Solid surface countertops and artificial stones can have an incredible impact on home décor design, adding wonderful factors to them. Contrary to their name, countertops and artificial stones are not artificial; they are made from natural stone chips found in mines combined with polyester resin products.

**Several advantages and disadvantages of kitchen countertops and artificial stones made with Kimiya polyester resin:**

**Advantages:**
✓ More affordable than natural stone and wood (significantly lower cost compared to natural stones).
✓ Easy maintenance and cleaning (can be cleaned effortlessly and used well for up to a century without repair or chemical impact on the surface).
✓ High durability (these products are completely robust and show high resistance to chemicals, high humidity, and fire).
✓ Diverse designs (in addition to being very beautiful, shiny, and impressive, they are available in various spectrums and colors according to your taste).
✓ Light weight and easy installation (due to their light weight, they are easy to install, playing an important role in reducing decoration costs).

**Disadvantages:**
Because they are mostly made of stone powder, they have poor shrinkage performance. If there are frequent cold and hot temperature differences, they break and are damaged easily.

Other polyester casting products made with Kimiya 714 and 721 that have interesting applications in your home include quartz sinks, shower trays, and advanced bathtubs.

**Several advantages and disadvantages of artificial sinks and shower trays:**
✓ Very high strength and durability; they can be used for many years without repair or quality reduction.
✓ Very beautiful appearance, available in various models and colors.
✓ Hygiene and safety: due to the special production technology, the surface of sinks made from natural stone and Kimiya 714 and 721 polyester resin prevents the proliferation of harmful microorganisms and acts completely antibacterial.
✓ Easily installed and placed; they have very high resistance to chemicals and temperature changes.

Alborz Organic Materials Engineering Company, employing skilled engineers and specialists, has successfully produced Kimiya 714 and 721 polyester resin with the best quality and utilizing the newest global formulations, which have suitable properties for manufacturing casting parts. We provide you with two examples of formulations (for artificial marble) and (solid surface, Corian) using Kimiya 714 and 721 unsaturated polyester resin.

**Example Formulation for Artificial Marble (Kimiya Resin):**

| Component | Amount |
| :— | :— |
| Kimiya 714/721 Polyester Resin | 29.30 |
| Carbonate/Dolomite/Clay | 68.37 |
| Cobalt 6% | 0.03 |
| MEKP | 0.3 |
| Pigment Paste | 100/2 |

**Example Formulation for Artificial Solid Surface:**
Kimiya 714/721 Polyester Resin…