Heat treatment process to achieved 7075-T6
Heat treatment process to achieved 7075-T6
(OP)
Hi, maybe someone can help me in the next issue:
I tried to achieved 7075-T6 from 7075-T0 ,it is my first time.
The pieces are 0.071" thick.(about 30).Based on technical data I did the following process with the pieces.
1.- (Solution treatment) with the parts (7075-T0) inside the kiln, at maximum rate took 25 minutes to reach the target temperature of 925F, and then I kept that temperature for 1 hour, then stopped the kiln and cool the parts at room temperature.
2.- (Aging) One hour later when the pieces still inside the kiln and with less than 160F , I reached the target temperature 250F and left them for 24 hours,then cooling at room temperature.
After finishing the process and verifing the results by measuring the hardness of the parts it was less than HRB=60, when it should be more than 84 to 99 aprox.
two question:
1.-Is there any wrong in my procedure?
2.-As I need to achieve the 7075-T6, and I have to do the correct process again , do I have to do an extra heat treatment because of the previous failed treatment?
I tried to achieved 7075-T6 from 7075-T0 ,it is my first time.
The pieces are 0.071" thick.(about 30).Based on technical data I did the following process with the pieces.
1.- (Solution treatment) with the parts (7075-T0) inside the kiln, at maximum rate took 25 minutes to reach the target temperature of 925F, and then I kept that temperature for 1 hour, then stopped the kiln and cool the parts at room temperature.
2.- (Aging) One hour later when the pieces still inside the kiln and with less than 160F , I reached the target temperature 250F and left them for 24 hours,then cooling at room temperature.
After finishing the process and verifing the results by measuring the hardness of the parts it was less than HRB=60, when it should be more than 84 to 99 aprox.
two question:
1.-Is there any wrong in my procedure?
2.-As I need to achieve the 7075-T6, and I have to do the correct process again , do I have to do an extra heat treatment because of the previous failed treatment?





RE: Heat treatment process to achieved 7075-T6
RE: Heat treatment process to achieved 7075-T6
RE: Heat treatment process to achieved 7075-T6
I followed your instructions and it worked
thanks for all
RE: Heat treatment process to achieved 7075-T6
one last question
quenching in hot water, means to keep a temperature of the water no more than the room temperature, or there is some value of temperature to keep during quenching?
Thanks
RE: Heat treatment process to achieved 7075-T6
RE: Heat treatment process to achieved 7075-T6
thanks again Swall
RE: Heat treatment process to achieved 7075-T6
I am going to work with sheet metal Aluminum alloys from .030" to .125" thickness (7075T6,2024T3,6061T6)
What is the more accurate hardness meter ?
a portable one or a big one traditional
what brand in recomemdable?
RE: Heat treatment process to achieved 7075-T6
RE: Heat treatment process to achieved 7075-T6
HRB is an abbreviation for Rockwell B hardness. This test is unsuitable for testing aluminium alloy sheet.
Regarding testers, don't use portable ones exclusively. You need to develop a correlation between them and a standard unit. I recommend Wilson hardness testers:
http://www.wilsoninstruments.com/