Category: Industrial Knowledge

Multi-stage injection speed is key to reducing short shots and burning. This article teaches you to first find a baseline using a single-stage speed, then set it up in three stages: "slow start, fast run, and final deceleration," and optimize the filling speed using screw position switching and end exhaust.

The draft angle and ejection design determine the ease of demolding and the appearance quality. This article guides you to quickly select the angle, configure ejection and venting to avoid whitening, tearing, and mold jamming; it also compiles recommended angles for common materials and surface treatments.

Holding pressure and switching point are crucial to injection molding quality. Switching too early can lead to short shots, while switching too late increases flash and stress. This article analyzes the principles for setting holding pressure, time, and switching point, and provides switching ratios for different plastics.

Fusion welding is a precision metal joining technique that uses fuel with a melting point above 450°C to flow into the gaps between base materials to complete the joint. Unlike traditional welding, fusing welding does not melt the base material, resulting in minimal heat-affected zone and excellent airtightness. This article explains fusing welding in detail.

Vacuum brazing is a process that uses a filler metal with a lower melting point than the base metal to perform "liquid phase diffusion bonding" in a high vacuum environment. Because the residual oxygen in the furnace is extremely low, oxygen is avoided...

By embedding pressure and temperature sensors directly into the injection mold, the actual PT curve of the melt in the mold cavity can be monitored simultaneously. Through closed-loop fine-tuning of holding pressure and cooling time, warpage and short-shot defects are significantly reduced, and yield can be improved.