At present, the number of enterprises providing castings for construction machinery is large, and the scale and level are uneven. There are not many enterprises with annual output of more than 10,000 tons, most of which are small enterprises. The equipment and technology adopted by small enterprises are relatively backward and the overall level is low. In recent years, some large and medium-sized enterprises have gradually adopted advanced equipment and advanced technology to expand the scale of production. For example, the lost foam casting process is used to produce the box body, and the V method casting process is used to produce the bridge housing, which makes the casting quality go up a great step.
1. Summary of construction machinery casting products
Construction machinery castings include both cast iron and cast steel. Taking loader as an example, a loader needs about 1.8 tons of cast steel (mainly including driving axles such as axle housing, wheel hub, wheel frame, brake disc and wear-resistant parts such as bucket, cutter plate and bucket teeth), and needs about 2.5 tons of cast iron (mainly including engine block, gearbox body and change). The housing of the torque box and other balancing parts of the body box and counterweight.
2. Market demand status and development prediction of construction machinery castings
In recent years, due to increased investment in railway, highway, steel, petrochemical and urban construction, the demand for construction machinery has increased rapidly, and the rapid growth of construction machinery castings has also been driven. Over the next 5 to 10 years, key state investment projects will continue to drive the construction machinery market, and the market demand for construction machinery castings will continue to grow steadily.
