METHOD OF APPLYING RUBBER LINING TO THE INTERNAL SURFACE OF PIPING AND FITTINGS
A method of lining a piping assembly with rubber to form a rubber liner. An inner surface of the piping assembly is selected for lining. One or more containment devices are attached/inserted in the piping based on the selected surfaces. The inflatable bladder is introduced to an inner bore of the piping. The inflatable bladder is inflated to a predetermined pressure. An oven or autoclave is heated to a predetermined temperature. The piping assembly is introduced to the oven and heated until a predetermined curing temperature. The piping assembly is cooled for a predetermined cooling time and a rubber inner liner is formed on the selected surface.
1 . A method of lining a piping assembly with rubber, the method comprising:
selecting an inner surface of the piping assembly for lining;
inserting one or more containment devices in the piping based on the selected surfaces;
introducing the inflatable bladder to an inner bore of the piping;
inflating the inflatable bladder to a predetermined pressure;
pre-heating an oven to a predetermined temperature;
introducing the piping assembly to the oven and heating until a predetermined curing temperature; and
cooling the piping assembly for a predetermined cooling time and a rubber inner liner is formed on the selected surface.
2 . The method of claim 1 , further comprising:
roughening the selected surface;
removing impurities from the selected surface;
applying a primer bonding agent to the selected surface; and
applying a secondary bonding agent to the selected surface;
3 . The method of claim 1 , further comprising:
degreasing an outer surface of an inflatable bladder assembly;
applying a release agent to the outer surface of the inflatable bladder assembly;
selecting an amount by weight of rubber material based on the selected surface, the piping assembly and a geometry of the piping; and
wrapping the selected rubber material over the inflatable bladder.
4 . The method of claim 1 , further comprising securing the inflatable bladder to the piping prior to inflating the inflatable bladder.
5 . The method of claim 1 , further comprising closing supply valves of the piping prior to inflating the inflatable bladder.
6 . The method of claim 1 , comprising selecting one or more additional inner surfaces for applying a rubber liner and applying the rubber liner to the selected one or more additional inner surfaces.
7 . The method of claim 1 , further comprising inspecting the rubber liner for bonding and/or delamination.
8 . The method of claim 1 , further comprising removing the one or more containment devices.
9 . A method of lining a piping assembly, the method comprising:
roughening internal surfaces of piping;
removing impurities from the internal surfaces;
applying a primer bonding agent to the internal surfaces;
applying a secondary bonding agent to the internal surfaces;
inserting one or more containment devices in the piping;
degreasing an outer surface of an inflatable bladder assembly;
applying a release agent to the outer surface of the inflatable bladder assembly;
selecting an amount by weight of rubber material based on the piping and a geometry of the piping;
wrapping the selected rubber material over the inflatable bladder;
introducing the inflatable bladder to an inner bore of the piping;
securing the inflatable bladder to the piping;
inflating the inflatable bladder to a predetermined pressure;
closing supply valves of the piping;
pre-heating an oven to a predetermined temperature;
introducing the piping to the oven and heating until a predetermined curing temperature; and
the piping is removed from the oven and cooled for a predetermined cooling time and an inner liner is formed on the inner surfaces.
10 . The method of claim 9 , further comprising removing the one or more containment devices.
11 . The method of claim 9 , further comprising inspecting a bonding of the rubber lining with the inner surfaces.
12 . A piping assembly comprising:
piping;
an inflatable bladder coupled to the piping;
a valve coupled to the inflatable bladder;
a lid containment device connected to a top of the piping;
one or more containment coupled to the piping;
control circuitry connected to the inflatable bladder and having one or more processors configured to:
select an inner surface of the piping assembly for lining;
introduce rubber material into the inflatable bladder;
inflate the inflatable bladder to a predetermined pressure;
heat the piping assembly until a predetermined curing temperature and form a rubber liner on the inner surface.
13 . The assembly of claim 12 , the one or more processors configured to cool the piping assembly for a predetermined cooling time.
14 . The assembly of claim 12 , the one or more processers configured to inspect the rubber liner.
15 . The assembly of claim 12 , further comprising an oven for heating the piping 101 .