Aluminum alloy plastic deformation processing can be done by almost any heating method, such as gas furnace, oil furnace (as long as the flame is not in direct contact with the aluminum alloy billet), box type resistance furnace, induction heating furnace, etc.
Induction heating of aluminum alloy billet has developed rapidly in these years, mainly because induction heating can not only simulate the effect of resistance furnace heating, but also has the advantages that box type resistance furnace does not have, such as no need to warm up in advance like box type resistance furnace, it can be heated when it is turned on, non-contact heating is in line with the needs of aluminum alloy billet heating, heating time and holding time are greatly shortened, and heating defects such as coarse crystal of billet can be avoided.
There are many refractory materials in the resistance furnace, which absorb a lot of heat energy when the furnace is on, i.e. the device has large heat loss, and it needs to maintain a certain temperature when it is not working; in addition, induction heating has repeatability, i.e. the power required for a given aluminum alloy billet specification, starting forging temperature, beat, and induction heating is basically constant, thus the precise heating temperature can be determined by beat, with good process repeatability and stable product quality, the benefits brought by this feature to aluminum alloy heating are
①Because the power of the equipment is adjustable, the induction furnace can form a production line with forging equipment to achieve synchronous production.
②Under the set power and beat conditions can effectively prevent the billet temperature from under-temperature or over-heating and over-burning.
③Using computer, temperature measuring device (non-contact infrared thermometer) PID control device and semiconductor inverter to form a temperature control system to achieve accurate temperature control and automation.
④Easy to realize modern management system in forging factory.
It can be seen that induction heating for aluminum alloy heating is an advanced and ideal method compared with resistance furnace.
|alloy a380||a356 alloy|
|Heat resistant||heat treatment|
|alloy in astronee||induction heating|
|vs zinc alloy||zinc alloy coated steel|