Using forging machinery to apply pressure on metal billets, The
plastic deformation is made to obtain the machining method of
forgings with certain mechanical properties, certain shape and
size. Through the constant beating of the fittings, Compaction and
welding the original segregation, porosity, porosity and slag
inclusion in the ingot, It's getting closer, improves the plastic
and mechanical properties of the metal. Forging pipe fittings
mainly include forging flange, Forged diameters, Forging three
links, etc. q235, are the main materials for forging fittings q345,
16 mn, 20#, 35#, 45#, 40Cr, 12Cr1MoV, 30CrMo, 15CrMo, 20G, etc.
Corresponding to the forged fittings are cast fittings, The
mechanical properties of castings are lower than those of forgings
of the same material, The casting fittings melt the metal into a
liquid that meets certain requirements and pour it into the mold,
The process of obtaining castings (parts or blanks) with
predetermined shape, size and properties after cooling
solidification and cleaning.
Neck butt welding flange is a flange with conical neck and butt
welding with cylinder or pipe. It belongs to integral flange. [1]
Because of the transition structure of cone neck and butt welding
connection, the strength and stiffness of flange are strengthened,
and the sealing property is better than that of flat welding
flange. The disadvantage is to use forgings to manufacture, cost
more materials, manufacturing costs. Suitable for high pressure,
temperature or sealing requirements.
Flange is a part of the connection between the pipe and the pipe
for the connection between the ends of the pipe; it is also useful
for the flange on the inlet and outlet of the equipment for the
connection between the two equipment, such as the reducer flange.
Flange connection or flange joint refers to the detachable
connection of flange, gasket and bolt as a combined sealing
structure. Pipe flange refers to the flange with pipe in the pipe
device, and the inlet and outlet flange of the equipment is used on
the equipment. There are holes in the flange, and the bolts fasten
the two flanges. The flanges are sealed with gaskets. Flange split
thread connection (wire buckle connection) flange, welding flange
and clip flange. Flanges are used in pairs, low-pressure pipes can
use wire flange, more than 4 kg of pressure using welding flange.
Add a gasket between the two flanges and fasten it with bolts.
Different pressure flange thickness, they use different bolts.
Water pumps and valves, when connected to pipes, are locally made
into corresponding flange shapes, also known as flange connections.
All connecting parts that are bolted around two planes are
generally called "flanges ", such as ventilation ducts, which can
be called" flange parts ". But this connection is only a part of
the equipment, such as flange and pump connection, it is difficult
to call the pump "flange parts ". Smaller, such as valves, can be
called "flange parts ".
Reducer flange for connection between motor and reducer, and
connection between reducer and other equipment.
Connection mode
Flange (flange) connection is the connection of two pipes, fittings
or equipment, each fixed on a flange, between the two flanges, plus
flange pads, fastened together with bolts, completed. Some pipe
fittings and equipment have their own flange, is also a flange
connection. Flange connection is an important connection mode in
pipeline construction. The flange connection is easy to use and can
withstand greater pressure. In industrial pipelines, flange
connections are widely used. In the home, the pipe diameter is
small, and is low pressure, can not see flange connection. If in a
boiler room or production site, there are flanged pipes and
equipment everywhere.
According to the type of connection flange can be divided into:
plate flat welding flange, with neck flat welding flange, with neck
butt welding flange, socket welding flange, thread flange, flange
cover, with neck butt welding ring loose sleeve flange, flat
welding ring loose sleeve flange, ring groove surface flange and
flange cover, large diameter flat flange, large diameter high neck
flange, eight-character blind plate, butt welding ring loose sleeve
flange, etc.
Welding quality
As iron plate welding flange, many customers question whether the
quality of iron plate welding flange is better than forged welding
flange. In fact, the quality of iron plate welding flange is the
same as that of forged welding flange, but where the iron plate
welding flange can not be guaranteed, that is, the material of iron
plate welding flange is the least guaranteed, because there is no
problem in the general process.
Chinese name | 法兰 | material quality | Stainless steel, carbon steel, nickel steel, etc |
Foreign Language | Flange | scope of application | Construction, light and heavy industries, plumbing, electricity,
etc |
classification | machine part | | |