Short process production technique for preparing casting of wind power generation equipment

Abstract

The invention discloses a short process production technique for preparing a casting of wind power generation equipment, relates to the manufacturing of cast iron alloy and is a short process production technique for preparing a thick and large section casting of the wind power generation equipment; the short process production technique includes that: molten iron obtained through the sintering of iron ore and the reduction of blast furnace smelting receives dephosphorization and desulfurization treatment and is injected into a medium-frequency induction furnace for smelting continuously with steel scrap and scrap returns, meanwhile the composition of the molten iron is regulated, and then spheroidization and inoculation are carried out to obtain the thick and large section casting for the wind power generation equipment after the final step of cast molding. The invention adopts the short process technique and accordingly improves the production efficiency; a cupola furnace is replaced by the medium-frequency induction furnace to accurately control the impurities and temperature of the molten iron and also have the effects of environmental protection and energy-saving and consumption reduction; core-spun yarns are adopted for the processes of dephosphorization, desulfurization, spheroidization and inoculation so that the treatments are quick and efficient, the number of graphite balls is effectively increased, and the thick and large section casting of high quality for the wind power generation equipment is obtained.

Description

technical field [0001] The technical scheme of the invention relates to the manufacture of cast iron alloys, in particular to a short-flow production process for preparing castings for wind power generation equipment. Background technique [0002] Most of the important components of wind power generation equipment are castings. For example, the hub of the blades in the wind power generation device, the gear box and the mechanical stand are all castings. Because wind power generation equipment is often installed on high-altitude inland or ocean, the temperature is low, the working environment is relatively harsh, and the wind power generation equipment is huge, especially the components such as the gear box and the hub are installed at a high position, so hoisting and Maintenance is not easy to carry out, which requires these castings to be able to run stably and reliably for more than 20 years. In addition, most of the castings of wind turbines are the main bearing parts, s...

AI Technical Summary

Problems solved by technology

[0006] The technical problem to be solved by the present invention is to provide a short-flow production process for preparing castings for wind power generation equipment. Due to the short-flow process, the molten iron from the blast furnace is poured into pig iron ingots without cooling, and is processed in dephosphorization and desulfurization. After that, it is directly injected into the medium-frequency induction furnace, and the composition is adjusted in the medium-frequency induction furnace, and then it is spheroidized and cast into shape, thus overcoming the instability of metallurgical quality in the production of thick and large-section castings for wind power generation equipment in the prior art. The spheroidization effect is not good, the spheroidization incubation process is complicated and difficult to control, the spheroidization recession phenomenon is prone to occur during the incubation process, the number of graphite spheroids cannot be effectively increased, and many shortcomings that cause environmental pollution

Images