Factors Affecting the Life of Zinc Alloy Die Casting Dies and the Methods to Improve the Life

Release time: 2022-06-08

Factors Affecting the Life of Zinc Alloy Die Casting Dies and the Methods to Improve the Life
(1) The influence of die material, the material of extrusion die made of carefully selected hot working die alloy steel will affect the service life of the die. The smelting standard of die steel has a strict range for controlling the chemical composition, especially the content of impurity elements. For example, the sulfur and phosphorus contents are not allowed to exceed 0.03%, and other alloy elements also have a fluctuation range. It is precisely because of the existence of this fluctuation range that the performance difference of die steel is more prominent, resulting in different comprehensive performance characteristics of dies in production, which may lead to early failure of dies.
(2) The influence of mold design or manufacturing defects In the process of mold design and manufacturing, defects are left due to negligence, which will also directly lead to the early failure of the mold in use.
(3) The influence of mold heat treatment process The mold heat treatment is an indispensable and important link in mold manufacturing, which includes annealing, quenching, tempering, nitriding and other treatment methods. These methods have different purposes and different treatment processes
(4) The influence of the use and operation of the die As a forming tool for extrusion processing, the die is placed in a very bad working environment. Once the extrusion operation violates the operating procedures, the die may be damaged first. In a word, the factors that affect the life of the die are far more than the above. No matter what causes the early failure of the die, it will bring losses to production, benefits and other aspects.
2. Ways to prolong the service life of the die (1) When selecting the die material, the processing object should be based on different production batches, process methods The type of die, working mode, processing speed, main failure forms and other factors are used to select materials.
(1) High temperature strength and toughness
(2) Excellent high-temperature wear resistance, oxidation resistance and tempering resistance
(3) Good thermal fatigue performance
(4) High resistance to melting damage
(5) Good hardenability, small heat treatment deformation
(6) Good machinability and grindability
(7) The internal structure of the material is uniform without defects

Back

Related News