Adopting the development mode of circular economy and establishing a resource-saving and environment-friendly low-pressure casting industry is an important way to reduce energy consumption. Various industrial furnaces in the casting production process consume a lot of resources and are also the source of environmental pollution.

The energy consumption can be reduced by making full use of the kiln waste heat in the production process of low pressure casting. For example, a factory in Shandong introduces the waste heat of the cupola into the drying room to dry the castings after painting, thereby achieving the effect of energy saving. Use cupola waste heat to heat domestic water. Therefore, full attention should be paid to waste reduction, reuse, recycling and remanufacturing in low-pressure casting production. It is reported that the cost of dumping a ton of waste sand is higher than the cost of buying new sand, and the index of recycled sand is not lower than that of new sand. According to the current domestic price of new sand and the cost of recycled sand, the cost of recycling is only the 1/3 of new sand. A large amount of slag granulation can be used as a raw material for cement production, which is a good way to reduce pollutant emissions.

For more than 20 years, the development of China's low-pressure casting industry mainly relies on cheap labor, which wastes a lot of domestic resources and energy, and even produces too much investment. With the rapid development of China's economy and the continuous expansion of the scale, domestic energy, resources and ecological environment are increasingly restricting economic growth. The development of low pressure casting industry is also facing a series of major challenges. If we follow the path of high growth in the past but sacrifice resources and the environment, it will not work.

China has been six consecutive years to become a large low pressure casting casting producer. However, from the increasingly severe energy constraints faced by China's low-pressure casting industry, the increasing pressure on environmental security, the intensification of competition in the international casting industry, and the strengthening of intellectual property protection, China's low-pressure casting industry must be transformed from a big country to a powerful country. InReduce energy consumption within 5 years. Decrease by 10%20Only through innovation and improving the quality of employees, by establishing a harmonious manufacturing concept, and relying on the development of circular economy can bring hope to the low-pressure casting industry.