According to the above research and analysis, it is concluded that the best T6 heat treatment process for rheo SQUEEZE CASTING 7075 alloy parts is 475 ℃ solution treatment, holding for 2h, room temperature water quenching, aging temperature for 140 ℃, holding for 16h, air cooling. According to this...
The heat treatment system of 7075 aluminum alloy wheel shaped parts formed by rheo squeeze casting was analyzed and tested. Through DSC analysis of the parts, different solution temperature ranges were determined. Through a large number of samples, a variety of heat treatment schemes with different solution temperature, solution...
The DSC thermal analysis curve of 7075 aluminum alloy was tested in the experiment. According to the thermal analysis curve, different temperatures (460, 475, 490, 505, 520 and 535 ℃) were set for isothermal solution treatment for 2 hours respectively. The effect of solution temperature on Microstructure and hardness...
(1) The experimental scheme and process. The slurry was prepared by lspsf semi-solid pulping process, and the 7075 aluminum alloy wheel parts were formed by rheo squeeze casting with 3000kN vertical semi-solid squeeze casting machine independently developed and manufactured in the laboratory. The overall diameter of the product is...
The main functions and purposes of alloy heat treatment are as follows: one is to improve the process performance of the formed parts and ensure the smooth progress of the subsequent processes; the other is to improve the performance of the parts and give full play to the potential...
Although rheo squeeze casting can improve and improve the mechanical properties of 7075 alloy parts and eliminate some macro segregation, the micro segregation is still widespread, which reduces the grain boundary strength and leads to the low overall properties of rheo squeeze casting parts. 7075 alloy is a kind...
Heat treatment is usually used in strengthening and toughening treatment of ductile iron. The heating temperature of most heat treatment processes is higher than the upper limit of critical eutectoid temperature (AC upper limit) of nodular iron heating, which involves the austenization process of nodular iron matrix structure, which...
Dredger is a common dredger, working in sand and silt. It is generally used to excavate various kinds of silt, soft clay, sand and hard clay underwater. With the improvement of dredging engineering efficiency, dredger is developing towards large and super large scale, and the size of lock ring...