Q:A Kelon old air conditioning, fluorine mouth, there is no needle, how to measure the pressure and fluorine ah? No thimble tube screw, no response, how should I test? Thank you

Inside the six angle valve clockwise turn to the point, plus good, and then shut to death, OK

Q:How can I see a needle valve in plastic products?

Do good needle type mold, the glue inlet port is generally lower than the product surface, in front with no obvious signs of the case can be used to identify the surface color, into the plastic needle valve mouth is used with cooling gel, ambient temperature will be higher than the nearby, slightly shiny.The needle tip of the valve will also have obvious marks, because the high temperature and the entrance of the glue hole will always be more or less bright or rough than that of the die steel.

Q:Mold glue is how the air valve needle

The hot plate of the needle valve has operation instructions on it. If it is not clear for a long time, see if the hot runner leads out the interface. Is there any mark gas IN/OUT?If not, (usually two groups, only one group and one group)

Q:Does the needle valve hot runner have adhesive problems? What are the possible causes?

ExistingWe asked coreter hotrunner maintenance customer servicePossible reason: the valve needle does not emit too much heat.Handling: reduce hot nozzles and gatesThe temperature increases with cooling time.

Q:Why can hot runner needle valve be blocked?

May be a small needle valve, or is not standard and not with the nozzle aperture valve needle understanding.

Q:Napping needle valve type hot runner gate part of what is the reason? Do you have any expert answers?

If the material selection is not appropriate, long time production, will cause wear of the valve needle, some suppliers use inferior needle valve, or valve needle without cutting, non professional technology, can easily lead to the valve needle top is not smooth, resulting in gate galling phenomenon, the effect is not good, the final effect the quality of products. I hope I can help you

Q:Hot runner valve needle in the molding, why will retreat?

The following reasons may cause the needle to recedeThe plastic pressure is greater than the cylinder pressure, causing the needle to recede

Q:Injection mould hot runner system needle taking needle tool

The needle system of each hot runner company are different, the heating needs of general, pull out, because the structure is not the same, the use of tools are not the same, some companies do their own fixtures. Is the best request to the hot runner company. Let the staff training

Q:Is the injection pressure tight after the valve pin closes?

In the process of injection molding, solution and shrinkage because of cooling, but because the screw to move slowly forward, so that the material in the tube to melt into the cavity, to supplement the needs of shrinkage, called pressure. It means to prevent product shrinkage, with pressure if production is stable. The pressure can also adjust the product size, without weld line

Q:How many times can the hot runner valve needle be used?

Needle valve has good or bad, generally have quality requirements of the needle valve, the basic use of the industry standard disk needle valve, the international standard moldThe valve needle surface hardness of HRC60-62, titanium, with non stick material, high abrasion resistance, continuous use up to 1 million times,