What factors will lead to the mechanical properties of aluminum alloys fail? 1, the ingot is not homogenizing five checkered specifications, so Ingots precipitated Mg2Si phase can not squeeze in a relatively short time to re-solid solution, resulting in a solid solution is not sufficient to affect the performance of aluminum alloy products; 2 , aging process properly, hot air circulation or thermocouple mounting position is incorrect, resulting in inadequate or excessive aging aging; 3, five checkered substandard ingredients ingot manufacturers, ingots of Mg, Si content is not up to standard requirements; 4, at the outlet of the fan less aluminum alloys, air flow is not enough, resulting in the slow cooling rate, can not make the aluminum alloy in the shortest possible time dropped to below 200 ℃, so coarse Mg2Si precipitates prematurely, allowing the solid solution phase to reduce the impact aluminum alloy mechanical properties after heat treatment; 5, aluminum alloy extrusion temperature is too low, too slow squeeze five checkered Which is good, Shandong, profile extruder outlet temperature does not reach the solution temperature, since no the solid solution strengthening effect. According to different aluminum content of alloying elements can be divided into eight series were 1 *** 2 *** 3 *** 4 *** 5 *** 6 *** *** 7 8 *** 1-8 series aluminum uses introduction: 2 ××× series of aluminum plates 2 ××× series aluminum sheet: representative of 2A16 (LY16), 2A06 (LY6). 2 ××× series aluminum is characterized by high hardness, which the copper content, probably in about 3-5%. 2 ××× series aluminum is aviation aluminum in conventional industrial infrequent application. China produced less 2 ××× series aluminum manufacturers. Quality can not be compared with other countries. Aluminum imports mainly from South Korea and German manufacturers. With the development of China's aerospace industry, 2 ××× series aluminum production technology will be further improved. Five checkered manufacturers, rolls aluminum, five checkered provided by Jinan Heshun Aluminum Limited. Jinan Heshun Aluminum Co. (www.jnhsly.com) Shandong Jinan, aluminum products leader, over the years, the company is implementing the scientific management, innovation and development, the principle of honesty and trustworthiness, and satisfy customer needs. Aluminum leadership in cis with the staff warmly welcome all inquiries negotiations to create a better future for aluminum rolls.