When machining aluminum profile housings, the ambient temperature will affect the aluminum profile
housings. With the change of extrusion conditions, the extrusion temperature and extrusion speed during the extrusion process are also constantly changing. When extruding the aluminum profile shell, the extrusion temperature is low, the extrusion speed is slow, and the aluminum shell has high thermal conductivity.
Generally speaking, when the aluminum profile shell cools, the material structure changes, which makes the material qualitative and exhibits performance anisotropy. It may lose its original character or change. At this time, it can only reduce the probability of mutation and guide it to develop in a direction that is beneficial to itself.
Sause processing embrittlement
The change of the aluminum profile shell will lead to the damage of the crystal, the change of the lattice, and the sharp drop of its own plasticity index, and the aluminum profile shell will become brittle, brittle in use and easy to deform.
Affect physical and chemical properties
1. Low temperature will destroy the chemical structure of the aluminum shell, resulting in a chemical reaction, destroying the original covalent bond and corroding the aluminum shell.
2. The destruction of the intergranular material leads to the disorder of the grain order.
3. Destroy the physical structure of the aluminum casing. Density changes and small damage occurs when they are processed at low temperatures for extended periods of time. Temperature has a great influence on the surface quality of extruded profiles, so the temperature of each process should be strictly controlled. The places that need to be controlled include the temperature during extrusion and the temperature rise caused by friction during extrusion, the temperature of the ingot container, the temperature of the die, the temperature of the aluminum rod and the temperature of the heat treatment.