In today’s society, with the continuous advancement of industrialization, die-casting technology, as an important metal forming process, has been widely used in automotive, electronics, aerospace and other fields. However, the environmental problems generated in the process of die casting are also increasingly prominent, which has become an important factor restricting the development of the industry. We will discuss the impact of die casting process on the environment and corresponding environmental protection measures from a scientific and rigorous perspective, combined with facts and data references.

1、 The main impact of die casting process on the environment

1.1、Energy consumption and carbon emissions

The die casting process needs to consume a lot of energy, such as electricity, natural gas, etc. The consumption of these energy sources not only increases the cost of production, but also generates a large number of greenhouse gas emissions, which aggravate global climate change. According to statistics, the annual carbon emissions of the die casting industry account for a considerable part of the total carbon emissions of the entire manufacturing industry.

1.2、Exhaust emission

The molten metal used in the die casting process produces a large amount of exhaust gas, which contains harmful substances such as sulfur dioxide, nitrogen oxides, and particles. The emission of these waste gases not only pollutes the atmosphere, but also poses a threat to human health. Long-term exposure to high concentrations of exhaust gas in the environment, people are prone to respiratory diseases, cardiovascular diseases and other health problems.

1.3、Waste water discharge

The cooling water and release agent in the process of die casting produce a lot of wastewater. These wastewater often contains heavy metal ions, organic pollutants and other pollutants, if untreated direct discharge, will cause serious pollution to the water environment. Water pollution not only destroys aquatic ecosystems, but may also affect human health through the food chain.

1.4、Solid waste generation

Die casting process will produce a lot of solid waste, such as waste slag, scraps, unqualified products, etc. If these solid wastes are not properly treated, they will occupy a lot of land resources and may pollute the soil environment. At the same time, the stacking of solid waste may also cause fire, explosion and other safety accidents.

2、The environmental protection measures of the die casting industry

2.1、Application of energy saving and emission reduction technology

In order to reduce energy consumption and reduce carbon emissions, the die casting industry can adopt advanced energy-saving technologies and equipment. For example, the use of energy-efficient furnaces and insulation equipment to improve energy efficiency; Waste heat recovery technology is adopted to recover and utilize the waste heat generated in the production process. Promote the use of clean energy, such as solar energy, wind energy, etc., instead of traditional fossil energy.

2.2、Application of waste gas treatment technology

To solve the problem of exhaust gas produced in the process of die casting, a variety of exhaust gas treatment technologies can be adopted. For example, the use of cloth bag dust collector, electric dust removal equipment to remove particles in the exhaust gas; The harmful gases in waste gas are removed by adsorption and absorption methods. Reduce the concentration and harmfulness of exhaust gas by means of high-altitude emission or dilution diffusion. In addition, waste gas generation can be reduced at the source by optimizing the production process and reducing the amount of molten metal used.

2.3、Application of wastewater treatment technology

In order to solve the problem of wastewater generated during the die casting process, a variety of wastewater treatment technologies such as physical, chemical and biological can be used. For example, the use of precipitation, filtration, adsorption and other methods to remove heavy metal ions and suspended solids in wastewater; The organic matter and acid-base substances in wastewater were removed by REDOX and neutralization. Biodegradation converts organic matter in wastewater into harmless substances. The treated wastewater shall meet the national discharge standards before being discharged or reused.

2.4、Solid waste treatment and resource utilization

To solve the problem of solid waste generated during the die casting process, measures such as classified collection, storage, transportation and disposal can be taken. For recyclable solid waste, such as waste slag, scraps, etc., can be broken, screened, melted and other treatment after reuse; For non-recyclable solid waste, such as unqualified products, waste molds, etc., can be landfill or incineration. At the same time, the amount of solid waste produced can be reduced by improving the production process and improving the product quality.

3、 Spread hope and strength

In the face of environmental problems brought about by the die casting industry, we cannot sit idly by. As practitioners and managers of the industry, we should actively take actions to promote the research and development and application of environmental protection technologies, strengthen environmental supervision and law enforcement, and jointly create a green and sustainable die casting industry environment. At the same time, we should also pass on the concept and knowledge of environmental protection to the public, raise people’s awareness and responsibility for environmental protection, and jointly contribute to the protection of the earth home.

4、In short

He environmental impact of the die casting process cannot be ignored. However, as long as we take effective environmental protection measures and technical means, we will be able to achieve green development and sustainable development of the die casting industry. Let us work together to create a better future!