Laizhou Dingtai Machinery Co., Ltd.

For gray iron casting manufacturers, the inherent properties of the product are not to be overlooked. The basic properties of gray iron are introduced below.

This product has a relatively high clay content and a relatively low water content. During sand mixing, attention should be paid to the clay content and moisture content. If the clay content is higher than the sand, the pull-out strength will be improved.

Normally, we should control the effective bentonite content between 7% and 10%. The total amount of clay and usable clay in the molding sand should be maintained at the same level as the clay content.

Secondly, those who want to buy gray iron castings, whether in production or processing, should pay attention to the moisture content of the product. Moisture is one of the important factors determining the product's adhesion and plasticity. If the moisture content is relatively high, it will also cause changes in the clay binding force, leading to a decrease in the flowability of the molding sand. Moreover, too low moisture content will lead to brittleness and defects in the product.

The processing technology of gray iron castings is relatively simple. Laser strengthening treatment and surface alloying technology of gray iron castings can form a metallurgically bonded alloy layer on the surface of ordinary castings, making the castings have composite properties. Significant results have been achieved. Strengthening and refinement are the development direction of gray iron in China. Thin-walled, lightweight, and tough gray iron is designed to meet the engineering community's requirements for energy saving and reusable engineering materials, and to meet people's needs for green environmental protection. All gray iron treated with special production processes have the significant characteristics of graphite refinement, uniform structure, and high strength. Suitable for the needs of various constructions.