The absence of undesirable chemicals means high bonding strength and good electrical conductivity
The third phase is formed in the process of aluminum - steel composite.The component has high brittleness and low conductivity.
The third phase is also formed in the aluminum - titanium - steel composite’s titanium -steel surface and aluminum - titanium surface, but the formation temperature is much higher than aluminum steel, and the formation time required is longer.
There are two main disadvantages of the "aluminum-steel"composite welding block:
1. Use for too long in the environment above 300℃ will lead to the formation of the third phase, which will greatly reduce the bonding rate and electrical conductivity, and eventually lead to welding block cracking.
1. It is necessary to control the explosive composite technical parameters and the welding temperature of aluminum rod and steel melon more precisely, because these two factors will greatly affect the bonding strength of aluminum -steel composite.
The service life of aluminum-titanium-steel composite is 2-3 times longer than that of aluminum-steel composite.In addition, under the condition of high temperature, the voltage drop of aluminum-titanium steel is obviously lower than that of aluminum-steel composite welding block.Based on the tested resistance value after 300℃ treatment, it is estimated that the huge energy consumption advantage brought by aluminum-titanium-steel composite replacing aluminum -steel composite under the above conditions.
Aluminum-titanium-steel composite welding block has excellent mechanical properties at high temperature and high temperature conductivity, and has obvious energy saving advantages.More in response to the call of the country, the realization of energy conservation and emission reduction, ficant.