摘要:
A process for producing long length fluoride glass preforms, by producing a fluoride glass rod of core glass, overcoating the core glass rod with fluoride cladding glass to form a core/clad unit, and overcoating the core/clad unit with an oxide glass overclad.
摘要:
The invention concerns centrifugal casting of articles which solidify either by a chemical reaction or by physical solidification, wherein a cast liquid is brought into contact only with at least one shaping liquid, or, if desired, also with a gas phase, at least one of the shaping liquids being specifically heavier and the other shaping liquid or liquids being specifically lighter than the cast liquid, all the liquids forming a sharp boundary with each other. Thus, any contact of the cast liquid with a solid phase such as with the wall of the rotating container is excluded and the cast article is shaped only by centrifugal force, gravity and surface tension.
摘要:
In the operation of a plunger to form the yoke area of an article centrifugally formed in a mold, a ball and socket assembly is provided between the plunger and its associated spindle which permits the plunger to freely float from the formed glass article upon withdrawal of the plunger, thus obviating the production of crizzles and checks due to lateral pressure of the plunger on the side walls of the formed glass article.
摘要:
Glass for producing articles by centrifugal casting composed essentially of 60% SiO2, 18% B2O3, 7% MgO, 6% Li2O, 4% A12O3, 3% BaO, 1% CaO and 1% K2O, within tolerances of about + OR - 2 percent, all of the percentages being by weight; and article formed by helium-tight, stress-free fusion of the glass with an Fe-Ni-Co alloy.
摘要翻译:用于通过基本上由60%SiO 2,18%B 2 O 3,7%MgO,6%Li 2 O,4%A 12 O 3,3%BaO,1%CaO和1%K 2 O组成的离心铸造制造制品的玻璃,其公差约为+/- 2 百分比,所有百分比均以重量计; 以及玻璃与Fe-Ni-Co合金的氦密,无应力熔合形成的制品。