1. Analysis of development significance of automobile engine cylinder block casting technology
In the specific application process of automobile, the engine is the most critical part. Only by ensuring the design and manufacturing quality of the engine can we effectively ensure the application effect of automobile. In the automobile engine, the cylinder block is a key part. The casting quality and accuracy of the engine cylinder block will have a direct impact on the operation of the whole engine. However, in the traditional automobile engine block casting, due to the limitations of raw materials and technology, the casting accuracy of engine block is difficult to be effectively guaranteed. Based on this, in order to achieve good application effect of automobile engine, relevant enterprises and technicians need to deeply study its engine block casting technology, and reasonably apply advanced materials, technologies and equipment, so as to improve the casting quality through the improvement of engine block casting technology. Only in this way can we fully meet the actual manufacturing and application requirements of automobile engine cylinder block, and significantly improve the manufacturing quality of automobile engine and the overall automobile manufacturing quality. This will have far-reaching significance for the improvement of automobile production and manufacturing technology, the good development of automobile industry in today’s era, and the good guarantee of transportation quality and safety.
2. Analysis on the current situation of automobile engine block casting technology at home and abroad
2.1 Analysis of foreign technology status
At present, gray cast iron and aluminum alloy are common raw materials for foreign automobile engine block casting. With the development of engine block casting technology in recent years, the advantages of gray cast iron are becoming more and more significant, and the application proportion of gray cast iron in automotive engine block casting raw materials also shows an increasing trend year by year. In the specific engine block casting, HT250 gray cast iron began to become the main raw material; In the casting of cylinder head, HT300 gray cast iron is the main raw material; In the selection of casting core, shell core and cold core box are the main raw materials. At the same time, in the specific casting process of engine block, temperature control has also become a key link. Only by ensuring the stability of temperature can the performance of raw materials remain stable, so as to ensure the casting quality of engine block.
2.2 Analysis of domestic technology status
Nowadays, the development of automobile engine block casting in China is very rapid, and has achieved good results, which can meet the current industry demand. As for the raw materials in the casting of automobile engine cylinder block in China, HT250 gray cast iron commonly used abroad is also used as the main material, and high-carbon low alloy is used as its casting principle, so that the cylinder block has good leak proof performance. For the cast core, the main material is the cold core box, so as to ensure its high strength, low expansion and good collapsibility. In the specific casting process of engine cylinder block, due to the influence of cylinder block shape and characteristics, it can not be cleaned in a conventional way, but needs to be cleaned with the help of advanced manipulator to ensure the cleaning effect of cylinder block.