31/12/2018
Glassware
Glassware has a long history. It is generally believed that ancient Egyptians have made glassware in 3500 BC. In the 20th century.with the development of industrial technology, various kinds of metals, composite materials, and ceramic materials have a wide variety of materials, but these materials is still not substitute for glassware .
Glassware has high transparency, whiteness and vivid color; its surface is clean, it has good luster and clear pattern; it also has the resistance to quenching and heat, chemical stability and mechanical strength to meet the requirements of use.
There are many types of glassware, which can be classified according to their use, function and manufacturing method.
According to the use, it can be divided into wine, water, tableware, cooking utensils, etc.
According to the function, it can be divided into ordinary glassware, crystal glassware, heat-resistant glassware, glass-ceramicware, tempered glassware, laminated high-strength glassware, colored photosensitive glassware, washing and corrosion-resistant glassware, etc.
the molding methods for glassware
1.1 blow molding
There are two ways of manual and mechanical blow molding.
In the case of manual molding, the hand-held blow pipe is picked up from the inside of the crucible or the kiln take-up port, and blown into a shape in a metal mold or a wood mold.
Mechanical forming is used to blow large quantities of products. After the blowing machine receives the material, the automatic iron mold is blown into a shape, and after the mold is removed, the cap is removed to form a vessel. Press-blow molding can also be used to first punch the material into small bubbles and continue to blow into a shape.
1.2 Press forming
When artificially forming, the artificial picking material is cut into the iron mold, the punch is driven, the shape is pressed into a shape, and the mold is fixed after being fixed.
1.3 Centrifugal molding
The material is received in a rotating mold, and the glass is unfolded and pressed against the mold due to the centrifugal force generated by the rotation, and is taken out after being fixed. Suitable for the molding of large glassware with uniform walls.
1.4 Freeform
Also known as moldless molding. Repeated baking or thermal bonding in front of the kiln by manual picking. Since the glass is not in contact with the mold, the surface of the glass is bright and the shape of the product is smooth..
