We were cold shearing carbon and alloy rounds up to 3 3/4" and squares up to 4" at room temp. to 300 D.F. Although Shelldie or H-13 are hot work tool steels they worked very well in our application. The blades were pre-heated before use.
We did use the S series tool steels for cold...
I was in the forging industry for some time and we cold sheared round and square alloy steel bars daily. A good material for this application is made by Finkle. It's name is Shell die.
Heat treat with double temper to 48 to 52 HRC and freeze to below -125 D.F. between the tempers. Use a...
What hold time did you use?
You will need to hold at 1125 D.F. for at least 13.5 hours then set the temp. up to 115 D.F. for 4 hours at heat. Repeat for Double 115O NACE condition.
A properely engineered stress relieve will not reduce hardness. The temp. of the stress relieve must be 50 to 100 degrees F. below the tempering temprature used during the quench and temper. If a higher temprature is used the hardness will be reudced. Soak time should be 1 hour per inch of...
