-
-
Blogs
-
Equipment
-
Contact
Upholding the corporate spirit of “Integrity, Harmony, Pragmatism, and Innovation,” we remain committed to a business philosophy that puts people first, embraces technological innovation, and emphasizes integrity and pragmatism.
Method for manufacturing eccentric reducers
Release time:
Sep 15,2021
A reducer, also known as a pipe reducer or eccentric reducer, is a type of pipeline fitting used to connect two pipes with different diameters. Reducers are classified into concentric reducers and eccentric reducers. Materials used for reducers include stainless steel reducers, alloy steel reducers, carbon steel reducers, and 20-grade steel reducers such as Q234 and Q345. A reducer (pipe reducer) is a type of pipe fitting used at locations where the pipe diameter changes. The common forming processes employed for reducers include reducing-diameter pressing, expanding-diameter pressing, or a combination of reducing and expanding diameters. For certain specifications of reducers, stamping can also be used for forming.
A reducer, also known as a pipe reducer or eccentric reducer, is a type of chemical piping fitting used to connect two pipes with different diameters. Reducers are classified into concentric reducers and eccentric reducers. Materials used for reducers include stainless steel reducers, alloy steel reducers, carbon steel reducers, and 20-grade steel reducers such as Q234 and Q345.
A reducer (also known as a reducing tee or size reducer) is a pipe fitting used at locations where the pipe diameter changes. The commonly employed forming processes include reduced-diameter compression, expanded-diameter compression, or a combination of reduced-diameter and expanded-diameter compression. For certain specifications of reducers, stamping can also be used for forming.
1. Diameter Reduction/Diameter Expansion Forming
The reducing-diameter forming process for reducer pipes involves placing a pipe blank with a diameter equal to that of the larger end of the reducer pipe into a forming die. By applying axial compression along the axis of the pipe blank, the metal is forced to flow within the die cavity and undergoes contraction and shaping. Depending on the magnitude of the diameter reduction in the reducer pipe, the process can be carried out in a single pressing step or in multiple pressing steps.
Bore-expanding forming involves using a tube blank whose diameter is smaller than the larger end diameter of the variable-diameter pipe, and then using an internal punch to expand the bore along the inner diameter of the tube blank. This bore-expanding process primarily addresses the difficulty of forming variable-diameter pipes with excessively large diameter variations through conventional reducing-diameter forming. In some cases, depending on the material and the specific requirements of product shaping, bore-expanding and reducing-diameter methods are combined for use.
During the process of diameter reduction or expansion deformation, cold pressing or hot pressing should be selected based on the specific material and the nature of the diameter change. As a general rule, cold pressing is preferred whenever possible; however, hot pressing is recommended for situations involving multiple diameter changes that result in severe work hardening, cases with relatively thick wall thicknesses, or materials made of alloy steel.
2. Stamping and forming
In addition to manufacturing reducer pipes using steel tubes as raw materials, some specifications of reducer pipes can also be produced by stamping and forming steel plates. The shape of the die used for stretching is designed based on the dimensions of the inner surface of the reducer pipe; the steel plate, after being cut to size, is then stamped and stretched into shape using this die.
Product standard
The standard for reducing tees, as specified in GB/T13401-2005, covering national standards, U.S. standards, British standards, and various non-standard high-pressure stamped steel plate butt-welded pipe fittings.
The quality of reducing pipe fittings shall comply with the current national standard "Steel Butt-Welded Seamless Pipe Fittings" GB/T 12459-2005.
Ministry of Electricity Standards GD0506~0507
National Standard (GB/T9112-2000)
Mechanical Industry Standards (JB81-59, JB/T74-94)
Petroleum and Chemical Industry Department Standard (SH3406-96)
Chemical Industry Department Standards (HG5010-58, HG20592-97)
You can also learn more about industry trends.
Phone -8615226756063
Phone -8616631731810
Email -czlsg@163.com
Add: Industrial Zone, Yanta Road, Yanshan County, Hebei Province
