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What are the reasons affecting the service life of injection molds?
Release time:2024-02-19
What are the reasons affecting the service life of injection molds?
Regardless of any object has a certain service life, injection mold is no exception, when used to a certain extent after the need to make new molds, the service life of the injection mold is affected by a variety of factors, only a complete understanding of these factors injection mold factory can be the right medicine to produce a longer life of the mold.
The first factor that affects the life of the injection mold is dissolution failure. Injection mold factory commonly used injection alloys are zinc alloy, aluminum alloy, magnesium alloy and copper alloy, there are also pure aluminum injection, Zn, Al, Mg is a more active metal elements, they have a better affinity with the mold material, especially Al easy to bite the mold. When the mold hardness is higher, the corrosion resistance is better, while the molding surface if there is a soft spot, it is not conducive to corrosion resistance.
The second reason affecting the injection mold life thermal fatigue cracking damage and lead to failure. Injection molding production, the mold is repeatedly subjected to the role of radical heat and cold, molding surface and its internal deformation, mutual involvement and repeated cycles of thermal stress, resulting in tissue damage and loss of toughness, triggered by the emergence of micro-cracks, and continue to expand, once the cracks expand, there is a molten metal liquid extrusion, coupled with repeated mechanical stresses are to accelerate the expansion of the cracks. For this reason, on the one hand, the injection mold must be fully preheated before the start. In addition, in the injection production process mold must be maintained in a certain working temperature range, to avoid early cracking failure. At the same time, to ensure that the mold before production and manufacturing in the internal causes do not occur. Because of the actual production, most of the mold failure is thermal fatigue cracking failure.
The third reason that affects the life of the injection mold is the fracture failure. Under the action of the compression injection force, the mold will sprout cracks in the weakest point, especially the mold molding surface scribing marks or electrical machining marks are not polished. Or molding of the clear corner, will be the first to appear fine cracks, when the existence of brittle grain boundaries or coarse grain, that is easy to fracture, and brittle fracture when the expansion of cracks is very fast, which is a very dangerous factor for the mold's fracture failure, for this reason, on the one hand, where the mold face of the scribing marks, electrical processing traces, etc. must be polished bright, even if it is in the casting system parts, it must also be polished bright. In addition, the requirements of the mold material used in the high strength, good plasticity, impact toughness and fracture toughness are good.
Understand the three major factors affecting the service life of the injection mold, Shenzhen Ideal Group mold factory in the process of manufacturing can be the right medicine, in advance to avoid the impact of these factors, to make better quality molds, not only greatly improve the production efficiency, but also better to save the enterprise's production costs.
Ideal Vowin Group is an injection mould & CNC machining factory, support rapid prototyping, 3D printing, mould customization, we have recently helped our customers to complete many big projects, for more details, please visit our official website: www.idmould.com / www.vowin.cn.
If you have relevant needs,please contact us!
Ideal Vowin Group is an injection mould & CNC machining factory, support rapid prototyping, 3D printing, mould customization, we have recently helped our customers to complete many big projects, for more details, please visit our official website: www.idmould.com / www.vowin.cn.
If you have relevant needs,please contact us!
WhatsApp: +8617369230494
Wechat: 17369230494
E-mail: yuki@idmould.com/yuki@vowin.cn
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