plastic mold

 Common Steel Grades Used for Injection Molds There are several steel grades commonly used for injection molds including: P20 Mold Steel P20 is a versatile, pre-hardened mold steel that can be heat treated to higher hardness levels. It has good…

During the injection molding,the cooling time of injection part would decide the whole cycle time of production for somewhat.When the melt plastic get cooled down inside the plastic molds,if the cooling time is not enough,after mold open,the ejection force would…

maintenance of manifold of hot runner system   When properly installed ,manifolds will operate trouble free. If a problem occurs it is usually due to heater or thermocouple failure or melt contamination.       HEATER/THERMOCOUPLE FAILURE Let the tool…

Procedure for colour change of hot runner 1. Increase mold temperature by 15 C 2. Increase manifold and nozzle temperature by 50 C 3. Retract molding machine nozzle 4. Auto purge molding machine as per you standard practice 5. Hand…

Heater and Thermocouple Replacement 1. Remove hot half from mold 2. Remove Locating ring that clamps hot nozzle in place 3. Remove back plate of mold, if required, to give access to nozzle head 4. Using a small jimmy bar…

// In order to maintain quality parts for most of plastic injection molding company in China  , plastic parts must be produced in quality molds. The best quality parts are produced from precision molds. Molds, quite like cars, begin to…

Fastern screws on the core and cavity plates before transport to avoid mold open. Properly secure connection Wrong connection                   3/4 part of eyebolt screw enter into holes of mold 2 eyebolts…

Injection molding machine nozzle , runner —why get stuck ? According to our experience, the stuck problem is made ​​by copper , aluminum , stainless steel, Magnetic Filter Bar can not attract all of metal impurities . Especially 1-2 mm diameter…

Ths video is for a very simple mold assembly,but I think it could represent something basic for mold making