Research on the fractured reasons of aluminum piston for air braking system

The test and analysis of sample elements, sample factures, metallographic structures and mechanical characteristics are described in this document. There are many reasons for the facture of aluminum piston, which involves many factors, such as the smelting, pressing, heat treatment of raw materials and the subsequent machining, service conditions of products. Referring to the analysis of the returned products, there is only a piece of fractured product in the serial supplying. Raw material: a sample stick, several samples without fracture from different batches. The bad consistency leads to hard analysis. Considering that there are many factors involved in the analysis of fracture, it is necessary to analyze and study the relevant factors from the raw materials, the fractured samples and the intact samples as far as possible. Therefore, we test and analyze the elements, factures, metallographic structures and mechanical characteristic of relevant samples, referring to relevant domestic and foreign literatures and national standards.