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Flanges Connection Mode
Jun 30, 2017

Flanges Connection mode 

Connection mode editing

Flange connection is the two pipes, fittings or equipment, first fixed on a flange, between the two flanges, plus a flange pad, bolted together to complete the connection The Some pipe fittings and equipment have their own flanges, but also belong to the flange connection. Flange connection is an important way to connect pipe construction. Flange connection easy to use, able to withstand greater pressure. In industrial pipelines, flange connections are used extensively. In the family, the pipe diameter is small, and is low, can not see the flange connection. If in a boiler room or production site, full of flanged pipes and equipment.

1, according to the connection type flange connection types can be divided into: plate flat welding flange, with neck flat welding flange, with neck welded flange, socket welding flange, threaded flange, flange cover, with neck Welding ring loose flange, flat welding ring loose flange, ring groove flange and flange cover, large diameter flat flange, large diameter high neck flange, character blind plate, butt welding ring loose flange The

Welding quality editing

As an iron plate welding flange, many customers are questioned is the quality of iron plate welding flange is better than forging welding flange. In fact, the quality of iron plate welding flange and forging the quality of the welding flange is the same, but the iron plate flange in the end what can not be guaranteed it, that is, iron plate welding flange material is not guaranteed, because In the general process, the density of the iron plate welding flange is no problem, but in the process of production, the iron plate welding flange rough detection, so that after the production, not through Inspection of iron plate welding flange material can not be guaranteed.

Required equipment

Manual welding equipment, a handle angle grinder, a electric air hammer, a flat ruler.

Prepare before welding

1. Check the debugging equipment to ensure the normal operation of equipment; 2. Preparation φ4.0J402 electrode is best in the 300 ℃ -350 ℃ drying for one hour.

Welding process

1, the assembly of the vertebral body and large flange according to the requirements of the drawings assembled together, and then the average of the big flange is divided into 8 equal parts. 2, the welding flange due to thicker, larger groove, so the use of sub-symmetry, multi-layer welding.

Weld quality

Require the weld strength to at least the base metal strength. Weld surface smooth, no burn wear, pores, welding leakage, slag, undercut, not welded and other defects. I am less than 2mm.


1, the base must use J506 electrode welding, and the use of small current welding. Strictly in accordance with the welding process welding. 2, after each welding in a position, have to use the level of the flange card deformation of the flange plane. 3, while welding side with a gas hammer hammer weld, in order to achieve the role of stress relief.