8 - Cooling – part design – mold construction – mold maintenance - Smartplast

Contact

+420 725 764 813 olga@smartplast.cz

Company address

SMARTPLAST s.r.o.
B. Němcové 351
760 01 Zlín

Company ID: 28290330
VAT ID: CZ28290330

We are members of professional clusters

Plastikářšký klastr

AUTOKLASTR

Contact

+420 725 764 813 olga@smartplast.cz

Company address

SMARTPLAST s.r.o.
B. Němcové 351
760 01 Zlín

Company ID: 28290330
VAT ID: CZ28290330

We are members of professional clusters

Plastikářšký klastr

AUTOKLASTR

8 – Cooling – part design – mold construction – mold maintenance

8 – Cooling – part design – mold construction – mold maintenance

Domů / 8 – Cooling – part design – mold construction – mold maintenance

Presenter

Ing. Petr Halaška
Smartplast s.r.o.

The cost of plastic and cooling time can account for more than 70% of the part production costs.
Cooling time represents the longest part of the injection cycle. It mainly depends on part design, set injection parameters, and cooling efficiency.
In this webinar, we will show some steps to shorten the cooling time. We will complete the last part of the previous webinar about the actual behavior of injection-molded plastic parts in relation to the tolerance range.
We will demonstrate shrinkage calculation in Moldflow using CRIMS data.

Webinar recording

Program

How does the plastic affect cooling time (type, filler)?

What is the actual wall thickness of the part and how does it affect cooling time?

Effect of mold material on cooling in areas with difficult heat dissipation (hardened steel, tool steel, Ampco)

Determination of tolerance zone

CRIMS data in Moldflow – optimization of injection-molded part shrinkage

Webinar

8 – Cooling – part design – mold construction – mold maintenance

Presenter

Ing. Petr Halaška

Other webinars

1 – Injection instability – Rheology, plasticization, homogeneity, degradation, streaks

In this webinar, we will discuss how plasticization affects the quality of the injection-molded part and what visible defects may occur as a result.

2 – Injection instability during cavity filling: orientation, cold welds, trapped air

In this section, we will focus on injection instabilities that arise during the cavity filling phase, which stem from the nature of the plastic melt.

3 – Cavity filling instability, rheology, shear stress, accuracy of Moldflow results, uneven cavity filling

How accurate are Moldflow analysis results? The results are only as accurate as the input data provided.

4 – Cavity filling instability – unbalanced cavity filling – gating system balancing – Melt Flipper

Very often, injection-molded parts have thin walls that are difficult to fill. We will demonstrate the influence of cavity pressure on their filling.

5 – Injection inhomogeneities during packing – shrinkage, anisotropy, tolerance

Sink marks are visible defects on the surfaces of injection-molded parts. A more severe stage are voids, unwanted cavities within the walls of injection-molded parts.

6 – Injection inhomogeneities during packing, sink marks, voids, air bubbles

Sink marks are visible surface defects on injection-molded parts. A more advanced issue are voids—undesirable cavities within the walls of injection-molded parts.

7 – Requirements for accuracy level and tolerances of injection-molded parts, DIN 16742:2013 and ISO 20457:2018

This webinar follows webinar No. 6 Injection inhomogeneities during packing – shrinkage, anisotropy, tolerance.

9 – Design conflicts between part and mold, how to further optimize cooling

The cost of plastic and cooling time can make up more than 70% of the production costs of a part.

10 – What is residual stress, causes of its formation

Residual stresses are mechanical stresses that develop in the injection-molded part during the individual phases of the injection molding cycle.

11 – Effect of residual stress on deformation and part quality

Residual stresses are mechanical, residual stresses generated in the injection-molded part during manufacturing.

12 – Reduction of residual stress effects – part design, mold construction, machine settings

Residual stresses are mechanical, residual stresses generated by internal forces in the injection-molded part during the injection molding cycle.

13 – What influences the formation of voids, analysis of the formation of voids and their removal

Shrinkage cavities are unwanted voids in the walls of injection-molded parts. They affect the appearance of the part as well as its mechanical properties.

14 – Uneven filling of injection mold cavities and how to adjust the filling

Uneven filling of a cavity or cavities in injection molds is a phenomenon that everyone involved in injection molding technology has certainly encountered.

15 – Influence of part design and mold construction on cooling time

The cost of plastic and cooling time often make up more than 70% of the cost of manufacturing a part.

16 – Formation of residual stresses during injection molding and their effects

Residual stresses are mechanical stresses that develop in an injection-molded part due to internal forces. They are generated mainly during the injection molding cycle. These stresses remain embedded in the molded part even after ejection from the mold cavity.

17 – How to reduce residual stresses in an injection-molded part

Residual stresses are mechanical stresses that develop in an injection-molded part due to internal forces.