Acid Free Solid Vegetable Box Cover Toughened Tempered Glass

Acid Free Toughened Tempered Glass For Fridge Vegetable Box Cover

Description of toughened tempered glass:

Toughened tempered glass is a type of safety glass which is prepared to increase the strength of normal glass. The glass undergoes compression and tension through which, the glass breaks down into pieces. This can cause injuries and damage and thus, the toughened glass is used for making door panels, control panel, glass shelves and such things used on regular basis. Toughened glass eliminated the possibility of injury and is constructed under strict supervision to ensure durability and strength.

Process of toughened tempered glass​:

Step 1 Float glass is cut to the desired size.
Step 2 Prior to the tempering process, the cut glass is checked for flaws such as cracks, bubbles, and inclusions. The presence of these imperfections can cause breakage during the tempering process.
Step 3 The glass is washed to remove dust, dirt, and debris that could interfere with the thermal tempering process.
Step 4 After it has been cut, checked for flaws, and washed, the glass travels either in batches or in a continuous feed through a furnace, where it is heated at temperatures over 600 degrees Celsius.
Step 5 After the heating process, the scorching piece of glass undergoes a cooling process. During this process, the glass receives high-pressure blasts of cold air from varying angles for about three to 10 seconds. The process, called “quenching,” cools down the surface of the glass much faster than it does the center. Because of this, the interior zone of the glass stays in tension while the surface goes into compression. This combination of competitive stresses is what makes tempered glass so strong.

Advantages of toughened tempered glass:

1) Impact resistance: the impact strength of tempered glass with the same thickness is 3-5 times of that of ordinary glass, and the bending strength is 3-5 times of that of ordinary glass. We often use, store and clean dishes in the kitchen. It's hard to avoid rubbing kitchen appliances. The use of toughened glass with high impact resistance can enhance the durability of kitchen appliances.
2) Good safety: the raw materials of tempered glass generally contain less impurities, and the fine control in the melting process of raw materials makes the ultra white glass have more uniform composition than ordinary glass, and its internal impurities are less, thus greatly reducing the possibility of self explosion after tempering. When the toughened glass is damaged by external force, the fragments will become small particles with obtuse angle similar to honeycomb, which is not easy to cause serious injury to human body. Even if the environment in the kitchen is bad, the toughened glass with stable properties will not cause accidents.

Quality Inspection Item

1, Printing appearance: the glass printing area (ink covered area) of the control panel is judged under the condition that the back has opaque cover (black background), and under the black background, it is acceptable that the front is invisible.
2, Evenness: bow shape ≤ 0.5%; there is one place (one peak and one trough) allowed for every 610mm of waveform;
3, Granularity test: two pieces of tempered glass are selected for each batch of glass to be tested, and the place where the center of the long side of the glass plate is 13mm higher than the bottom edge is taken as the breaking point (see figure). After the glass is broken, the two areas with the largest granularity are selected in a 50mm*50mm box for counting. The number of crack-free particles completely contained in the 50mm*50mm box must be ≥50, and the largest particle size must be ≤ 15 mm * 8 mm.

FAQ

Q: What's the cut hole effect?
A: It depends on different thickness and for thick glass; we usually use water jet + CNC.

For thin glass, we use CNC for cut hole to make sure no breakage chips exist from hole edge.

Q: Is irregular shape glass available?
A: No problem because we will use shape cutting machine + CNC to make sure about the quality.

Q: How's the silk print effect?
A: Feihong received lots of praise in silk print quality base on import paints + auto silk print machine + dust free room.
Available in high temperature silk print(The paint melt into glass) and low temperature paint(Pass adhesion test).

Q: What's the edge treatment could meet?
A: We could make direct cut(cut chips, cheapest), fine grinded(CNC) and polish edges base on your need.
The chamfer / radius could be set.