How many processes are required to make a glass?

How many processes are required to make a glass? How to grasp each process to make the final shape of the cup more perfect? ​​The delegation walked into the glass factory to experience and watch the glass making process.

Manual blown wine glass production process

Heat processing stage

First, take a small amount of glass melt (the temperature of the glass melt is 1250 ℃-1450 ℃) from the glass melting furnace with a blow pipe, and then blow small bubbles with the blow pipe. Small glass bubbles are the basis of the glass cup. The diameter of the small bubbles is usually 3-10 cm. Careful inspection should be performed during the blowing of the small bubbles. If there are bubbles, streaks, impurities, etc. on the small bubbles, they must be abandoned. These conditions will cause defects in the glass. The small bubble to be blown round, the wall thickness should be uniform, the quality of the small bubble directly determines the quality of the glass product.

Use a blowpipe with small bubbles to take the glass melt from the glass melting furnace. This step is very important. The amount of material taken directly determines the weight of the product, the thickness of the bottom, and the thickness of the wall. At the same time, the method of taking the material is also to a certain extent. The above influences the quality of the glass material. A good technique can avoid taking out the material liquid with bubbles, streaks and impurities, and it can also avoid the formation of new bubbles during the reclaiming process.

After taking out the material, it is shaped in a shaping mold. After shaping a similar shape according to the product shape, the shaped blank is placed in the mold and blown. Blowing is the most critical link in the glass forming process. The level of blowing skills directly determines the brightness of the glass and the uniformity of the wall thickness. Generally, experienced veterans are engaged in this process.

After    is blown in the mold, the wine glasses without a stiffer go directly into the annealing kiln for annealing, and the wine glasses with tall feet need to be stretched and bottomed before annealing.

annealing stage

The annealing process is the process of removing the internal stress of the glass. The product undergoes a process of high temperature and then cooling in the annealing kiln. During annealing, the highest point temperature reaches about 540°C. This process usually takes 120-180 minutes and runs for 30 meters in the annealing kiln.

Cold working stage

After annealing is completed, it enters the cold working stage, which is the mouth treatment stage. At this stage, the cutting, grinding, and drying treatments are carried out separately, and the thick products must be polished. After this stage, the mouth of the glass becomes smooth and has the conditions for use.

While watching the glass making process, the workers in every link meticulously hold the utensils in their hands. In the strict production process, some products that cannot meet the standards will be eliminated. Engineer Ji Shisong held a glass cup in his hand. The reporter observed a protruding part on the wall of the cup. He explained that this may be due to the dripping of water during the production process, and such a cup will no longer enter the ranks of the final product.

Deep processing stage

After the cold working stage, the ones that need deep processing enter the deep processing stage. The main processes for deep processing include engraving, sandblasting, decals, gold ornaments, and colorful ornaments.

Quality control stage

After all kinds of processing are completed, enter the quality inspection stage. All products must undergo visual and hand inspection by inspectors one by one before they can be packaged. Common defects of glass cups mainly include bubbles, streaks, impurities, scratches, uneven mouth, uneven bottom, and non-conforming size.

The difference between mechanism and manual blowing

Appearance difference:

Machine-made products-basically completely plain products on the market, with single shape, fewer styles, bulkier products, poor flow linearity, transitional rigidity at the junction between the cup stand and the bottom, but the product size is consistent better.

Artificially blown products-bright material products are supplemented by various decorations, with many style changes, rich styles, lighter products, good product flow linearity, and obvious beauty. The product design can closely follow the fashion trend of market consumption and can give Consumers have more choices, which can satisfy individualized consumption propositions to the maximum.

Production process difference:

Machine-made products-machine production lines have high output. Usually, a medium production line can produce tens of thousands or even hundreds of thousands per day, but it does not have any artificial skills.

Manual blown products-each production link of each product is completed manually, and the output is low. Usually the daily output of each production team is several hundred, but each product contains the unique skills and precision of the craftsman. The work of fine carving.


Value difference:

Mechanism products-lower value, more functions to satisfy consumers, lack of appreciation.

Artificial blown products-high value, in addition to basic functions, in the process of use, it adds a lot of pride, elegance, and special life interest.

Post time: Feb-07-2021