How to treat Welding Mark of Injection Molding
The most influential factor for welding intensity is the temperature during the confluence of melt. In actual engineering practice, commonly-used methods for treating welding mark include: […]
Welding Mark of Injection Molding
The thread mark formed at the front confluence of two or more melt flows in the cavity is called welding mark or welding line. Usually, apart from low mechanical intensity, such defect as depression and aberration may also occur at places where welding mark appears. […]
How to treating welding mark in injection molding, mold design and product design
In actual engineering practice, commonly-used methods for treating welding mark include: […]
cooling at the gate part should be intensified in a mold
cooling at the gate part should be intensified, for cooling only, avoid setting the medium channel at the welding mark of the plastic parts, whereas the heating of medium channel should be preferably near the welding mark. […]
some dielectric should be applied to the molds
on the other hand, in order to remove such defect as the welding mark and to produce plastic parts with high lucency, dielectric such as high temperature and high pressure steam, high pressure hot water or thermal conducting oil should be applied to the molds to raise surface temperature molds. […]
the thickness of plastic part can help mold designer
sometimes, the thickness can help us to probably locate the welding mark, for example, in order to avoid leaving welding marks in the top areas. We should increase the thickness of the top areas to a reasonable value.
how to determine a plastic part’s quality
how to determine a plastic part’s quality, aside from dimensional accuracy, the surface quality of plastic parts will be examined, it depends on whether there exist defects, such as spots, wrinkles, porosity, dents, welding marks, and their surface luster and finish and so on.