LandGlass offers these core operational techniques to help operators maximize the performance of their glass tempering furnaces. Precision in these areas ensures the production of high-quality tempered glass with exceptional flatness and optical clarity.
Thorough Pre-Processing: Eliminating Risks at the Source

Comprehensive preparation is the cornerstone of achieving superior flatness and optical quality. This begins with rigorous raw glass management and equipment status verification. For raw glass, it is essential to allow for thermal equilibration; glass should be stored in the workshop for at least 24 hours to match the processing environment, which ensures temperature uniformity and dissipates internal stresses from transport. Before loading, the glass must be meticulously cleaned and dried to remove dust, oil, and moisture—preventing contaminants turning into permanent spots or disrupting heating uniformity. Additionally, a visual inspection is vital to identify inherent defects like stones, or poor edge grinding, as these will only be magnified during the tempering process.

Simultaneously, equipment status must be verified. Regularly clean the furnace chamber and heating elements to maintain a pristine heating environment. Ensure that ceramic rollers rotate synchronously and smoothly; any surface debris or scaling should be carefully removed with specialized sandpaper. Finally, use compressed air to clear all quench nozzles, confirming that the upper and lower chillers are aligned and parallel. Routine checks on fan impellers, couplings, and bearings are also necessary to guarantee stable, reliable air pressure.

Real-Time Monitoring: Controlling Quality in Motion

Continuous monitoring during production is the key to maintaining consistent standards. A strict "First-Piece Inspection" protocol must be enforced at the start of every shift and whenever the glass thickness or type is changed. This first unit should undergo a comprehensive evaluation on a flat detection table using straightedges and feeler gauges to measure flatness. Furthermore, operators should use polarizing filters to assess the severity of stress patterns (iridescence) and perform impact or fragmentation tests to confirm the glass meets all structural strength requirements.

Continuous Optimization: Driving Process Excellence

To achieve long-term quality advancement, a robust data recording and analysis system is indispensable. Every batch should be documented with its specific raw material data, furnace temperature, heating duration, quench pressure, fen height, and oscillation settings. This database enables rapid troubleshooting and allows for the precise fine-tuning of parameters based on historical performance. Finally, maintaining a stable workshop environment is vital. Specifically, operators must prevent cross-drafts from blowing directly onto hot glass or interfering with quench airflow; such measures are critical to providing the stable environmental safeguards necessary for the tempering process.