In the mold insert processing
, the material should be carefully selected, if you choose the wrong material, then the back of the process is all for naught, so the choice of material is also a very important process, then, the mold insert processing
on the material performance requirements what?
Mold insert processing on the material performance requirements
Hardness is one of the main ability indicators of mold steel, mold in the role of high stress can maintain its shape and ultra-precise parts of the dimensional accuracy, must have a high enough hardness. Different parts, and different uses of precision parts, the material requirements hardness is also different. In the general FA equipment precision parts, and ultra-precision mold parts, the inspection tool used to check whether the corresponding hardness required is also different.
In a relatively high temperature state of the work of hot metal parts, the organization and performance of the requirements to maintain the stability of the hardness, so as to maintain a high enough, this performance is called red hardness. Carbon tool steel, low-alloy tool steel can usually maintain this performance in the temperature range of 180 ~ 250 ℃, chromium-molybdenum hot work tool steel generally in the temperature range of 550 ~ 600 ℃ to maintain this performance. Steel red hardness mainly depends on the chemical composition of the steel and heat treatment process.
3, compressive yield strength and compressive bending strength
in the process of use will often be subject to strong and high pressure and bending, so we require the material should have a certain compressive strength and flexural strength. In general, if we want to conduct compressive and flexural tests under conditions close to the actual working conditions of the die, the measured compressive yield strength of the die steel is more compatible with the deformation resistance exhibited by the punch at work. Another advantage of the flexural test is the absolute value of the strain variable, can be more active to reflect the difference between different steel grades and in different heat treatment and arrangement of the state of deformation resistance.
In the production process, hardware parts are subjected to impact loads, in order to reduce the use of the process of fracture, chipping and other forms of damage, but also to adhere to the original ultra-fine precision requirements mold steel has a certain toughness.
Resolution mold life is often the most important element of the mold material wear resistance. Mold in the work of accepting a considerable amount of compressive stress and friction, requiring the mold can be in strong friction can still adhere to the mold parts scale accuracy. The wear of mold is mainly mechanical parts wear, oxidation wear and melt wear three types
The above "mold insert processing on the material performance requirements" is the introduction of HXTech
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