Flange Facing is a machine service on flange surface performed during the repair and maintenance period. Flange facing ensure flanges machines work smoothly with any issues with their joint integrity. To avoid any issues like leakages and corrosion maintenance and repair of Flange machine is required time to time.
Flange Facing is very useful tool to mechanically cut or polish disks, rings, collars or flanges. It is a very important activity in refinery, gas, petrochemicals, pipelines, and food processing and chemical industries. Flanges are pressurized during operation and continuously face damage, they experience impacts with other components while installation and construction or cuts from gasket leaks. This process cuts the flanges to be less exposed to leakages as fluids are forced to travel in a spiral path. Cutting or polishing operation is done to ensure regularity and face flatness. By this process Flange facing achieved proper sealing capability. These machines are very flexible and they can be mounted at any angle.
The main industries which require Flange Facing Machines are-
Petrochemicals, Oil Industry, Pharmaceutical, Pipelines industry, Power generation plant, Nuclear industry , Tube processing, Shipyards, High purity industry
The flange facing work is required for the following activities:-
* Re-surfacing large pump base housings.
*Repairing flat face raised face and phonographic finish flanges.
* Re-facing of pipe or pipeline flanges.
*Repairing of a heat exchanger and other equipment nozzle flanges.
*Re-machining the gasket seal on tube sheets.
* Cutting new grooves or repairing ring grooves.
Flange machining tool work with the cutting tool traveling in a spiral path across the face of the flange. These machines are powered with Pneumatic or hydraulic methods. Depending on the mounting mechanism, two types of Flange facing machines are available in market. The one is Internal Diameter (ID) mounted flange facer and the other is outer Diameter (OD) mounted flange facer. Flanges are mass-produced with machined surfaces, damage to the flange surface during transit and installation can occur. These results in scratches and dents to the sealing surface. Damage like this puts the integrity, even after pipelines have become operational; a joint’s integrity can be compromised by corrosion inside the joint. When this happens, the flange often needs to be replaced and can be removed using a split flame cutter.
There is various flange facing machine price which are available in market. The first thing which should be considered is priority and uses. The flange faces machines should be property stable. If a machine is not stable it can move during the machining process, causing damage to the flange and producing an inconsistent surface finish. Another issue is that some machines don’t have pre-set gears. The most important thing is that flange facing machines should be robust and easy to use.