The injection products should not be too thick and when necessary the stiffening rib can be added to reduce wall thickness; the wall thickness must be kept as uniform as possible and the shape and structure should be simple and symmetric; […]
Optimize prescription of plastics and preferably use resins with low shrinkage; […]
Properly improve injection and dwell pressure as well as the injection rate to increase melt’s compression tightness; prolong time of injection and dwell (the freezing of gate should not occur too early) to realize sufficient shrinkage compensation; […]
Properly increase section dimension of gate and runner; the position of gate is set at thick walls of the plastic parts and should be as symmetric as possible; improve mold exhausting condition; […]
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: […]
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. […]
With every weld repair comes challenges with EDM recast layers, platings, coatings, steel types and filler rod choices. we’ll break down these problems and recommend repair procedures that welders should consider for mold and die steels. […]
In most welding shops, there is a certain procedure for handling a mold from when it arrives for repair to when it is ready for a customer. At my company, it is a seven-step process that may require adjustments depending on whether we are using micro-TIG or laser welding. […]
Traditionally, designers have relied on a general “feel” or “rule of thumb” to decide which alignment locks to insert within a mold, considering sizes and mounting preference. That’s adequate, right? Maybe not. Selecting an alignment lock based only on gut feel could result in an undersized selection and, down the line, can result in costly [...]
1 Use plastics with low viscosity and sound fluidity or adjust prescription of plastics and reduce viscosity of melt; 2 Improve barrel temperature, increase injection pressure, raise melt temperature to reduce erection degree, and improve plastication quality; 3 Improve mold temperature and uniformity thereof, raise nozzle temperature and properly set cold-slug well ; 4 Increase [...]