Injection Molds for Expansion Tank Mounting Plate 

More and more China mold makers are involved in manufacturing plastic injection molds for Engine Coolant Recovery Tank Mount . However, the warp issue caused by plastic PA66+30GF is always a big challenge to overcome. To handle the injection tooling project of  Radiator Expansion Tank Mounting Plate, it requires consolidating force from each team including mold flow/design/machining/QC. And the whole team must own rich experience, otherwise the critical dimensions are difficult to be achieved and mold has been changed again and again. For most companies, core and cavity needs to be replaced at least one time. Dumping away blocks is quite commonly seen.

injection mold for plastic water tank

injection mold for plastic water tank

Mold Flow. Use Mold flow to calculate the warp and gate location with the size normally between4-6mm. Now here is the question, a lot of mold makers complaint about that the result from Mold flow differs greatly with actual result. According to our years of experience, mold flow reading is feasible, but it requires more experience as how to understand the warp/torque/twist.

 

3.Modify part warp. Modify part print of  Auto Transmission Coolant Recovery Tank Mounting Plate based on mold flow result and actual experience. We have built dozens of these plastic molds for Radiator Mounting Plate for Expansion Tank and accumulated rich experience in this aspect.

 

4.Mold Mechanism:①When designing PL, we need to follow one principle,  PL could not be changed when adding or reducing plastic②As much cooling as possible cold down。③Make small inserts for the main area where dimensions are critical so that it is easy to replace if necessary.

injection mold for plastic water tank

injection mold for plastic water tank

Injection Molds for Expansion Tank Mounting Plate 

injection mold for plastic water tank

  • Fitting:①For oil cylinder mold, it is easy to get burnt. The fitting needs to be alittle loose 。②It is easy to create  flash with this plastic, so we have to CNC on the flat surface while leaving enough wall stock. ③Place slides to the cavity to fix the gap.

Well, it is a science to develop injection molds for Custom Molded Mounting plate for Expansion Tank. Let’s hear about your opinion!

 

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