Carbon steel elbow forming technology

Carbon steel elbow forming technology

 

The less rigid carbon steel elbow, suitable for pressure P is less than or equal to 4MPa occasions; GB carbon steel elbow rigidity, suitable for high temperature pressure. The basic process of carbon steel elbow forming technical process is: first, the welding of a cross section is a polygon multi edge ring shell or both ends closed multi Leng fan-shaped shells, the internal washed over the pressure medium, subjected to internal pressure, under internal pressure by polygonal cross section gradually became round, and eventually become a circular ring shells. Flange sealing surface of the three types: plane sealing surface, suitable for pressure is not high, medium non-toxic occasions; uneven sealing surface, suitable for the occasions of high pressure slightly.

Carbon steel elbow technology is suitable for manufacturing the working pressure is less than 10MPa, carbon steel elbow diameter D? 125mm, carbon steel elbow diameter of D and carbon steel elbow diameter ratio of D D/d? Any carbon steel elbow 1.5, while carbon steel elbow is not limited in size. For example, can be processed carbon steel elbow inside diameter is 12M, diameter of more than 60m large GB carbon steel elbow carbon steel bend. Pipeline system industry GB carbon steel elbow petroleum, natural gas, chemical industry, hydropower, building and boiler etc.. Tongue and groove sealing surface, suitable for the inflammable, explosive, toxic medium and high pressure situations. The gasket is a kind of can produce plastic deformation, and has a certain strength of the material of the ring.

 

Carbon steel elbow forming process

 

Carbon steel elbow forming process using special Elbow push processing machine, core and heating device, so that the set of blank on the mold movement forward in the push for machine, process in motion is heated, expanding and bending. The deformation characteristics of hot pushing elbow is according to the law of metal material plastic volume deformation before determining the tube diameter, the tube blank diameter less than the diameter of the elbow, the deformation process of the core mold control blank, the metal flow in arc compressed, compensation for expanding and reducing to other parts of thin, thereby gets the thickness uniformity.

Has the advantages of beautiful appearance, uniform wall thickness and continuous operation of hot pushing elbow forming technology, is suitable for mass production, and thus become the main forming method of carbon steel, alloy steel elbow, forming and is used in some specifications of stainless steel elbow.

Heating forming process with induction or high-frequency heating (heating ring for multi ring or a single ring), flame heating and reverberatory furnace heating, using what kind of heating way as forming product requirements and energy decision.