Apparatus for supporting a glass body and manufacturing method for making same
The apparatus for supporting a glass body is made by a method including the following steps: putting carbon-containing fibers in an axially parallel arrangement and tightly packing them; twisting the resulting tightly packed carbon-containing fiber bundle to form a carbon-containing fiber rope piece and fixing it in a twisted state; then pyrolyzing the resulting carbon-containing fiber rope piece, soaking the pyrolyzed carbon-containing fiber rope piece in a silicon-containing fluid and ceramicizing the carbon-containing fiber rope piece. The supporting apparatus formed by this method includes a gas-permeable body, which has channels or passages through which a gas, such as air, can pass. The channels are inclined at their outlet ends on a gas outlet surface of the gas-permeable body.
1 . A method of manufacturing an apparatus for supporting a glass body, said method comprising the steps of:
a) putting a plurality of carbon-containing fibers in an axially parallel arrangement and tightly packing said carbon-containing fibers to form a tightly packed carbon-containing fiber bundle;
b) twisting the tightly packed carbon-containing fiber bundle to form a twisted carbon-containing fiber rope piece in a twisted state;
c) fixing the twisted carbon-containing fiber rope piece in the twisted state;
d) pyrolyzing the twisted carbon-containing fiber rope piece to form a pyrolyzed carbon-containing fiber rope piece;
e) putting the pyrolyzed carbon-containing fiber rope piece into a silicon-containing fluid; and
f) ceramicizing the carbon-containing fiber rope piece.
2 . The method as claimed in claim 1 , wherein the carbon-containing fibers have different diameters.
3 . The method as claimed in claim 1 , wherein the carbon-containing fibers are natural fibers.
4 . The method as claimed in claim 3 , wherein said natural fibers are selected from the group consisting of hemp fibers, sisal fibers, wool fibers and silk fibers.
5 . The method as claimed in claim 1 , wherein the carbon-containing fibers are synthetic fibers.
6 . The method as claimed in claim 1 , wherein the carbon-containing fibers have a fiber diameter of from 20 μm to 200 μm.
7 . An apparatus for supporting a glass body, said apparatus comprising a supporting body having a plurality of channels or passages for conducting a gas and for forming a gas cushion adjacent to a gas outlet surface of the supporting body, wherein said apparatus is made by a method comprising the steps of:
a) putting a plurality of carbon-containing fibers in an axially parallel arrangement and tightly packing them to form a tightly packed carbon-containing fiber bundle;
b) twisting the tightly packed carbon-containing fiber bundle to form a twisted carbon-containing fiber rope piece in a twisted state;
c) fixing the twisted carbon-containing fiber rope piece in the twisted state;
d) pyrolysing the twisted carbon-containing fiber rope piece to form a pyrolyzed carbon-containing fiber rope piece;
e) putting the pyrolyzed carbon-containing fiber rope piece into a silicon-containing fluid; and
f) ceramicizing the carbon-containing fiber rope piece.
8 . The apparatus as defined in claim 7 , wherein said channels have an inside diameter of 0.1 to 100 μm.
9 . The apparatus as defined in claim 8 , wherein said inside diameter is from 1 to 20 μm.
10 . The apparatus as defined in claim 8 or 9 , further comprising means for keeping said supporting body fixed during operation to prevent rotation.
11 . The method as claimed in claim 8 , wherein the carbon-containing fibers have different diameters.
12 . The method as claimed in claim 8 , wherein the carbon-containing fibers are natural fibers.
13 . The method as claimed in claim 12 , wherein said natural fibers are selected from the group consisting of hemp fibers, sisal fibers, wool fibers and silk fibers.
14 . The method as claimed in claim 8 , wherein the carbon-containing fibers are synthetic fibers.