Artificial glass and blown glass machine different processes

   Artificial shape. Also known as blowing, with a nickel-chromium alloy blowpipe, pick a group of glass in the mold side turn while blowing. Primarily for shaping the glass bulb,BottlesGlass ball (designated with glasses) and so on. (2) drawn in blown vesicles later, another worker stuck with the top plate, two side edges pull blowing mainly used to manufacture glass tube or rod. (3) pressed to pick a group of glass, cut with scissors to make it fall into the die, and then a punch press. Mainly used for forming cups, plates and so on. (4) free-form, after material pick with pliers, scissors, tweezers and other tools directly into crafts. 

B. Mechanical forming. Because artificial shaping labor intensity, high temperature, conditions are poor, so, in addition to free-form, most have been replaced by mechanical forming. In addition to suppression of mechanical forming, blowing, drawing, there are (1) rolling method for the production of thick plate glass, carved glass, wire glass. (2) a casting method, the production of optical glass. (3) centrifugal casting method, used in the manufacture of large diameter glass tube, utensils and large capacity Fanyingguo. This is injected into the molten glass in the high-speed rotation of the mold, due to centrifugal force so close to the glass walls of the mold, the rotation continues until the glass is hardened. (4) sintering method for the production of foam glass. It is added in the glass powder foaming agent, is heated in a covered mold, the glass is formed in the heating process, many Closed bubbles which is a good thermal insulation, sound insulation material. In addition, there is a vertical flat glass forming the law cited, flat Rafah and float. Float glass is to float on the molten metal flow (tin) method of forming a flat glass surface, its main advantage is the high quality of the glass (flat, smooth), pulling speed, large output.

4. Annealed glass in forming over subjected to intense temperature change and shape change, this change in the glass leaving a thermal stress. Such thermal stresses can reduce the strength and thermal stability of the glass article. If direct cooling, is likely break itself (commonly known as a cold glass burst) during cooling or subsequent storage, transport and use. In order to eliminate the phenomenon of cold blast, glass products must be annealed after molding. Annealing is a period of incubation or slow cooling in order to eliminate or reduce the thermal stress in the glass to allow a value within a certain temperature range. In addition, some glass articles in order to increase its strength, can be just process. Including: physical stiffening (quenching), for thicker glass, tabletop glass, automotive windshields; and chemical stiffening (ion exchange), a cover glass for watches, aviation glass. Stiffening principle is in the glass surface layer compressive stress, in order to increase its strength.