news

Is it correct that the forging die requires high hardness?

Update:21-05-2021
Summary:

Among users who use hot forging dies, many people like […]

Among users who use hot forging dies, many people like to ask for high hardness, even 52-55HRC. This concept is wrong.
The reason for this phenomenon should be that some non-standard heat treatment companies or a certain "master" did not really quench according to the service conditions of forging dies when doing external heat treatment of forging dies, but lowered the quenching temperature, Shorten the holding time and only meet the user's hardness requirements. This kind of hardness value seems to meet the standard (or specification) forging die hardness range. Because the red hardness is not considered, the forging die has poor tempering resistance during use, and the hardness is very high. It will decrease soon. When the user inspects the used forging die again, it is found that the heat treatment hardness of the forging die is not high. The "boss" of the forging die used his brain: the next heat treatment will increase the hardness requirements, and it turns out that the forging die with increased hardness has a longer life than the last forging die with the hardness value selected in accordance with the standards and specifications. Increasing the hardness can solve this problem. How could he know the secret that the incompetent heat treatment level of the heat treatment manufacturer or "master" caused the hardness beyond the standard and the long life? As a result, this problem was misrepresented, causing the hardness value of the hot forging die to be higher and higher every day!plastic die steel Suppliers
The hot forging die with red hardness within the standard hardness range has a good life! It is incorrect for forging dies to require high hardness!

Views: 156