Aluminum alloy seating of the steel plate in the process of extrusion faults have?

Aluminum alloy seating or metal seating using steel plate in the extrusion process can have several common faults: 1, products organization uneven performance. Due to the extrusion of metal flow nonuniformity ( No lubrication is particularly acute when forward extrusion) , make the products surface and center, the head and tail organization performance uneven phenomenon, especially 6 how a02, 2 a50, 2 a10, 2 a12 alloy extrusion products, such as the formation of coarse grain ring after heat treatment. 2, extrusion die working conditions, working mould wear big ( According to the statistics in one power plant, account for more than 15% of the total cost) 。 3, the production efficiency is relatively low, the conventional multiple squeezing method cannot realize the continuous production. 4, compared with the other forming method, geometric waste loss is bigger. ( Cutting head and tail, a scrap) Geometric waste could reach 10% by weight of the ingot casting & ndash; 20%.