There are many factors that affect the cost of sand casting. Here, we have listed some of the main factors, and hope that this information can help our casting customers.
1. Cost of pig iron and scrap steel
2. Alloy cost
If your casting parts need to add alloys such as chromium, nickel, copper and molybdenum, then their prices will be more expensive than ordinary metal grades.
3. Casting process
Different casting processes will greatly affect the cost of castings. The cheapest is the molding sand casting process, then resin sand casting is more expensive, and the pre-coated resin sand casting process (eg hot shell and core molding process) will be the most expensive process.
4. Resin cost
As for the casting process with resin sand and pre-coated resin sand, the price of resin will affect the cost of the casting, but it will not affect the sand casting process.
5. The size and weight of the casting
As for small castings weighing less than 1 kg, the price per kg will be much more expensive than large castings because they will lead to more production time and grinding works.
6. Sand core
If your casting parts need to use sand cores in the production, then its cost will be higher than that without sand cores. This is because the sand cores need to be produced separately.
7. other factors
In addition, there are many other factors. The annual demand is greater, then their prices will decrease. Simpler sand castings will be cheaper. Material grades will affect difficult production and heat treatment, so materials with higher grades are more expensive. Higher requirements summing up surface quality and casting defects will lead to higher production costs because of the scrap rate. In addition, there are other factors such as processing costs, painting and packaging costs.
Therefore, they are many factors that affect the cost of sand casting. Therefore, it is inaccurate to estimate its cost only through a calculation formula. This foundry needs to consider these factors based on production experience and current prices of materials and labor.