Introduction of ductile iron casting parts:
During the industrial revolution, ductile iron casting parts were popular as a building material. However, the material was brittle and therefore unsuitable for some construction purposes. In the 1940s, researchers reportedly discovered that adding magnesium as an ingredient before casting could significantly enhance the properties of cast iron alloys. This improvement changed the composition of ductile iron casting parts at the particle level. Ductile iron casting parts have enhanced bending ability and the ability to withstand impact without breaking,
Introduction of grey iron casting railway parts:
Grey iron casting railway parts is a mixture of iron, carbon, and silicon. The grey part of the name, also spelled "grey", describes the color of the alloy and the graphite fracture that occurs due to the graphite flake structure inside the iron. The material used for grey iron casting railway parts, that is, the proportion of elements contained in the mixture, increasing the percentage of silicon tends to help stabilize the graphite in the alloy, while reducing the cooling time May reduce the amount of graphite in the finished product.
Advantages of iron casting railway parts:
1. Our Iron casting railway parts can be produced in two different materials: Ductile iron casting parts and Grey iron casting railway parts.
2. Grey iron casting railway parts are composed of an average of 2.5 – 4% carbon, 1 – 3% silicon and about 95% iron. The graphite in the iron can account for 6 – 10% of the total volume of the final cast iron.
3. Ductile iron casting parts will add a certain amount of magnesium to affect the performance of ductile iron. It has better ductility and tensile strength.
About us:
Dandong Hengrui Machinery Co., Ltd. insists on technological progress and strives to build the company into a modern foundry enterprise with low energy consumption, low emissions, high efficiency and environmental protection. In terms of technology, we have introduced and adopted advanced casting technologies such as high-pressure injection molding, shell core core making, and three-dimensional process design. In terms of casting equipment, we first introduced two FBOⅢ injection molding automatic production lines with detachable boxes from Japan (box size: 605×505×200㎜), which can produce 120 sand molds per hour and 7,000 tons of castings per year. Later, we introduced a static pressure automatic production line with world-leading level (box size: 1000×800×350/300㎜), which can produce 90 sand molds per hour and 30,000 tons of castings per year, and the production scope has been broadened. In order to produce high-quality molten iron, we purchased 12-pulse electronic furnaces in series and parallel (6 3-ton and 6 1.5-ton), which effectively improved the smelting level and can produce high-grade cast iron or materials with special needs. In the aspect of casting control, automatic feeding equipment is adopted, and the casting control software can automatically record the data of the whole casting process, from melting ingredients to smelting, spectrum analysis, temperature measurement, molten iron weight, etc. All the data are displayed on the screen in front of the furnace, so that the operator can see it at a glance. At the same time, these data also provide a reliable basis for analyzing production status, tracking and improving product quality.
