Anti-fatigue high pressure resistance ductile iron castings for injection molding machines with 15-year life

In the world of injection molding, the injection molding machine is the "mother machine" that gives life to plastics, and the core structural parts such as the head plate, the second plate and the tail plate are the "steel skeleton" that supports the operation of this mother machine.

Faced with hundreds of tons of ultimate clamping force, high-frequency alternating load and thermal stress caused by long-term operation, any slight structural deformation may lead to flash of products, out-of-tolerance of dimensions and even die damage.

Under such a core demand, high-quality ductile iron (ductile iron) injection molding machine castings are becoming the solid cornerstone of modern precision injection molding equipment towards high-end with their excellent structural rigidity, excellent dimensional stability and long fatigue life.

The core competitiveness of high-quality ductile iron injection molding machine castings first stems from its strong physical properties of "combining rigidity with flexibility".

Through the advanced spheroidizing and inoculation process, the graphite in the casting presents a perfect spherical distribution, which not only gives the template a tensile strength of more than 500MPa, but also makes it have excellent plasticity and toughness.

When the injection molding machine bears huge clamping pressure, the ductile iron template can maintain extremely high structural rigidity and is not prone to plastic deformation;

At the same time, its natural shock absorption and damping characteristics can effectively absorb the violent impact and vibration caused by high-pressure mold locking and mold opening.

This not only greatly reduces the noise when the equipment is running, but also avoids the damage of vibration to the precision mold, thus significantly improving the yield of injection products.

Besides its strong bearing capacity, ductile iron castings are synonymous with "precision and stability". The precision of injection molding machine template directly determines the molding quality of products.

In the process of melting and pouring of high-quality ductile iron castings, the internal residual stress is completely released through scientific composition ratio and strict aging annealing process.

This "zero stress" state endows the template with excellent dimensional stability, which ensures that the equipment can still maintain micron-level machining accuracy in the whole life cycle of more than ten years or even longer, and truly achieves "rejecting deformation and locking more accurately".

Excellent physical properties can not be separated from the blessing of precision casting process.

Aiming at the casting problem of large ductile iron castings with a thickness of 100-ton or even 1000-ton by injection molding machine, the leading enterprises in the industry have realized the smooth filling and extreme purification of molten iron through self-cleaning semi-open bottom pouring system and compound inoculation technology.

This not only completely eliminates the internal hidden dangers such as shrinkage cavity and slag inclusion, but also ensures the high density and uniformity of thick and large section structure.

With the advanced CNC gantry milling machine for precision machining, the installation hole position and positioning surface of the template can meet the extremely high tolerance standard of form and position, which provides a perfect assembly foundation for the smooth operation of the whole machine.

Choosing high-quality ductile iron injection molding machine castings is essentially a safe, efficient and economical manufacturing scheme.

Compared with the traditional welded steel plate structure, the ductile iron formwork not only has better rigidity and better shock absorption, but also can greatly reduce weight under the same strength, which helps the injection molding machine to develop into lightweight and energy-saving.

In this era of pursuing extreme precision and efficient production, the precision-cast ductile iron injection molding machine castings are silently guarding the perfect delivery of every precision molding with the hard core strength of "stability, precision and strength".