Hot Runner Nozzle Tips

The hot runner nozzle tip is an important part of the hot runner system. Plastic injection molding is done by transporting the liquid plastic through a hot runner and then injecting it into a mold via hot runner nozzle tips. The heat transfer in the hot runner nozzle is essential so that the plastic won’t be damaged and hardened. With the development of powder metallurgy technology and the diversification of customer needs, the materials of nozzle tips are constantly optimized to meet their requirements.

TZM is an ideal material used for hot runner nozzle tips compared with copper which is not able to withstand the abrasive plastic and the mechanical loads. It has a particularly high thermal conductivity of 140 W/mK and also has excellent advantages of high-temperature resistance and good corrosion resistance.

TZM molybdenum alloy refers to a molybdenum alloy containing 0.4-0.6% (wt) titanium, 0.08-0.12% (wt) zirconium, and 0.02-0.03% (wt) carbon, also known as a molybdenum-titanium-zirconium alloy.

• High thermal conductivity: an important indicator of a good runner nozzle is thermal conductivity. It has nothing to do with temperature and time. It is related to the temperature difference between the two ends. The better the thermal conductivity, the shorter the time to reach thermal equilibrium. The thermal conductivity of TZM hot runner nozzle tips is up to 140 W/mK which performed much better than many other materials.
•  High-temperature resistance: the maximum operating temperature of TZM is up to 450℃ which means TZM hot runner nozzle tips can be applied to most high-temperature environments.

• Good corrosion resistance: The ability of metal materials to resist the corrosive damage of the surrounding medium is called corrosion resistance. The excellent composition, chemical properties, and structure of the TZM make it a good material with corrosion resistance.

• Good mechanical workability: Because of its high thermal conductivity, high temperature and corrosion resistance, high hardness, and good mechanical properties, TZM hot runner nozzle tips perform well in the machinery process and have a long service life.

According to the nozzle form shape, our products can be divided into open gates and valve gates. The open-type nozzle is made of the main body, heating coil, tips, stainless steel tubes, and thermocouples. As a comparison, the valve-type nozzle is made of an air cylinder, cylinder cover, lower cover, piston, main gate, and valve needle.

Our products play an increasingly important role in the modern industry which is applied for injecting the liquid of plastic and metals. As we all know, many productions need to use the technology of plastic injection, such as cell phone battery covers, car bumpers, door panels, TV back shells, air conditioner shells, etc. Those are common to be seen and used in our life.

To ensure safety during transportation, the products will be packed in export wooden boxes, and the wooden boxes are protected by foam boards.

If you have special packaging requirements, we will try our best to meet them.