Steel components

Deepening design of special-shaped steel structure

The casting process is one of the important links in the smooth production of cast steel joints. In view of the particularity of the cast steel node structure, in the special-shaped steel structure room, with the help of simulation solidification software, the special-shaped steel structure is designed and the reasonable casting process is developed is the key factor for the success of the casting.

1. Coating: Coating is used to increase the resistance of molding sand to the erosion and erosion of molten metal, prevent sand particles from mechanically or chemically adhering to the surface of the casting, and make the surface of the casting smooth. The casting adopts alcohol-based coating, which has the characteristics of good air permeability, high strength and fast drying speed. The coating needs to be 2 mm. Fabricated steel structure

2. Pouring and riser system: In the production of castings, the pouring and riser system is one of the important factors affecting the quality of castings. According to the characteristics of the cast steel node castings, the basic principle of the pouring riser system was formulated, and the basic principle was verified by the simulation of solidification software: to ensure that the molten steel entering the cavity is stable and free of eddy currents; choose a reasonable pouring riser The position is convenient for the solidification of the pouring sequence; the pouring riser system should not cause thermal stress on the casting; during the pouring process, ensure that the molten metal in the mold has an appropriate rising speed; the structure of the pouring riser system should have the ability to discharge slag.