Preparation process of high-strength pump truck elbow

Abstract

The invention discloses a preparation process of a high-strength pump truck elbow, and belongs to the technical field of metal material casting. The preparation process comprises the following steps:the components of iron, carbon, silicon, manganese, phosphorus, sulfur, niobium, nickel, chromium and copper are prepared completely in parts by weight and placed into a casting furnace, then a moltenmetal material is poured into a casting mold to be solidified and cooled, a casting is taken out and cleared to remove a casting head and burrs, heat treatment is conducted, and inspection for storage is conducted. The preparation process is wide in application range, large-wall-thickness castings of most of carbon-manganese steel can be covered, large heat treatment furnaces are facilitated, theutilization rate of equipment can be increased, and the production efficiency of the equipment can be improved.

Description

technical field [0001] The invention relates to the technical field of metal material casting, in particular to a preparation process of a high-strength pump truck elbow. Background technique [0002] The concrete pump truck is a machine that uses pressure to continuously transport concrete along the pipeline. Composed of a pump body and a conveying pipeline, it is an important mechanical device to improve project quality, speed up construction, and improve work efficiency in engineering construction; during the process of conveying concrete by a cement pump truck, due to the characteristics of the concrete itself, the conveying pipeline is relatively easy Abrasion, especially at the pipe elbow, is subject to greater impact force from concrete and is more prone to wear and tear. Frequent replacement of worn pipe elbows will not only reduce the transmission efficiency, but also lead to increased costs and waste of resources. [0003] With the rapid development of modern indu...

AI Technical Summary

Problems solved by technology

Composed of a pump body and a conveying pipeline, it is an important mechanical device to improve project quality, speed up construction, and improve work efficiency in engineering construction; during the process of conveying concrete by a cement pump truck, due to the characteristics of the concrete itself, the conveying pipeline is relatively easy Abrasion, especially at the pipe elbow, is subject to greater impact force from concrete and is more prone to wear and tear. Frequent replacement of worn pipe elbows will not only reduce the transmission efficiency, but also lead to increased costs and waste of resources

[0003] With the rapid development of modern industry, people have higher and higher requirements for the reliability of pipe fittings. However, the existing domestic pipe elbows are all made by traditional production methods, which often lead to uneven carbonization, low densification, and poor sintering performance. Therefore, the tensile strength and wear resistance of the products produced are extremely low, resulting in a high replacement rate and seriously affecting the conveying efficiency of concrete

At present, although some imported pipe fittings and elbows have good wear resistance, they are expensive, and the high cost affects the benefit