How does parallel hot air flow in the furnace ensure uniform transformation of nickel sulfide inclusions from α to β phase in heat-soaked glass?

The parallel hot air flow in the furnace plays a crucial role in ensuring the uniform transformation of nickel sulfide inclusions from the α phase to the β phase in heat-soaked railing glass. Here’s how this process works:

Consistent Temperature Distribution:
Uniform Heating:The parallel hot air flow is designed to pass smoothly and evenly across the surface of each glass sheet in the furnace. This ensures that every part of the glass is exposed to the same temperature, which is essential for uniformly heating the entire glass panel.
Avoiding Hot Spots:The even distribution of heat prevents the formation of hot spots or areas with uneven temperatures that could lead to inconsistent transformation of nickel sulfide inclusions. Uniform heating is critical because the transformation from the α phase to the β phase occurs within a specific temperature range.

Effective Phase Transformation:
Controlled Heating:Nickel sulfide inclusions exist in two phases: the high-temperature α phase and the low-temperature β phase. The α phase is unstable at room temperature and can cause delayed glass breakage if not fully transformed into the stable β phase.
Parallel Air Flow Impact:The parallel flow of hot air ensures that the entire glass surface, including any areas containing nickel sulfide inclusions, is heated sufficiently to induce the transformation from the α phase to the β phase. The steady, parallel flow helps maintain the necessary temperature throughout the entire glass sheet for a sufficient period to complete the transformation.

Prevention of Residual Stress:
Even Heat Distribution Reduces Stress:
Uneven heating can introduce residual stress within the glass, which might lead to incomplete phase transformation or even new points of weakness. The parallel hot air flow minimizes this risk by ensuring that heat is distributed evenly, preventing the formation of stress points and ensuring a complete and uniform transformation of all nickel sulfide inclusions.

Enhanced Safety and Durability:
Reduction of Breakage Risk:
By ensuring that all nickel sulfide inclusions are transformed into their stable β phase, the parallel hot air flow greatly reduces the risk of spontaneous breakage in the glass. This is especially

In summary, the parallel hot air flow in the furnace ensures that the entire surface of the glass is uniformly heated, which is essential for the complete transformation of nickel sulfide inclusions from the unstable α phase to the stable β phase. This uniform heating minimizes the risk of residual stress and ensures that all inclusions are fully transformed, thereby significantly reducing the likelihood of spontaneous breakage. This makes heat-soaked glass, particularly in applications like railings, safer and more durable compared to non-heat-soaked glass.