The stamping reducer is a reducer produced by a stamping process. The reducer has the advantages of stable structure, fast forming, high hardness, high pressure resistance, corrosion resistance, abrasion resistance and high temperature resistance.
The size of the reducer is classified into: stainless steel reducer, alloy steel reducer, carbon steel reducer. Reducer, 10# reducer, 20G carbon steel reducer,
- Control caliber: DIN standard (DN10-DN150), 3A/IDF standard (1/2″-6″), ISO standard (Ф12.7-Ф152.4).
- International industry standards: DIN, ISO, SMS, 3A, IDF and so on.
- Product materials: stainless steel 304, 316, 316L.
- Quality and use: the inside and outside of the reducer with a polishing equipment to achieve surface precision requirements, this product is suitable for dairy, food, beer, beverage, pharmaceutical, cosmetics and other industrial fields.
- External processing: can be based on user requirements to map, sample processing non-standard products.
- Connection: clamp (quick) type, welded, thread (live) type.
Stamping reducer classification
Stamping eccentric reducer:
Refers to the size of the reducer produced by the stamping process that is not on the same straight line. The function of the stamping eccentric reducer is to connect two pipes with different nominal diameters and allow the pipe to be docked at different angles.
Because the stamping eccentric reducer is formed by stamping process, it has the advantages of high production efficiency, stable product structure, high product quality, low production cost, and mass production. This process can be used to produce various pipe fittings, such as Elbows, tees, flanges, etc.
Materials that can be used to produce stamping eccentric reducers include carbon steel, stainless steel, alloy steel, cast iron, aluminum alloy, pure aluminum, etc. Different materials have different characteristics and can be used in different piping systems.
Stamping eccentric reducers can be divided into national standard, electric standard, ship standard, chemical standard, water standard, American standard, German standard, Japanese standard, Russian standard and so on.
Stamping eccentric reducers are widely used in oil, natural gas, tap water, machinery manufacturing, shipbuilding, chemical, paper and other industries.
Stamping concentric reducers:
The reducer of the center on the same line is called the concentric reducer.
Basic process of stamping size forming technology
The reducer is a type of pipe used for pipe diameter reduction. The forming process usually adopted is a reduction press, a diameter expansion press, or a reduction and diameter expansion press. For some sizes of the reducer, press forming can also be used. The size of the reducer is characterized by a carbon steel having a strength significantly higher than that of the same carbon, which has good toughness and plasticity as well as good weldability and corrosion resistance. The reduction forming process of the large and small reducers is to put a tube blank having the same diameter as the large end of the large and small reducers into a forming mold, and to move the metal along the cavity and shrink and form by pressing in the axial direction of the tube blank. According to the size of the size reduction reducer, it is divided into one press forming or multiple press forming.
The expanded diameter forming adopts a tube blank smaller than the diameter of the large end of the different diameter tube, and is formed by expanding the inner diameter of the tube blank by the inner die. The diameter expansion process mainly solves the problem that the large and small diameter reducers are not easily formed by the diameter reduction, and sometimes the method of expanding the diameter and reducing the diameter is combined according to the material and product forming requirements. In the process of reducing or expanding the deformation and deformation, it is determined that cold pressing or hot pressing is adopted according to different materials and the diameter reduction conditions. Cold pressing is used as much as possible, but in the case of severe work hardening caused by multiple reductions, thick wall thickness or alloy steel material, hot pressing is recommended. In addition to the use of steel pipes as raw materials for the production of different diameter pipes, the partial diameter of the different diameter pipes can also be produced by the stamping forming process.
Need to pay attention when stamping the size of the reducer
There are many places to pay attention to when stamping the reducer, because some places can directly affect the quality of the welding. If the welding is not good, not only the size of the reducer but also the damage to the pipeline, so the scientific and reasonable welding is the top. The choice.
After the stamping reducer is welded, the hardening property is large, and cracks are easily generated. If the same type of stamping reducer welding is used, it is necessary to perform preheating at 300 °C or more and slow cooling at around 700 °C after welding. If the weldment cannot be post-weld heat treated. A stamping reducer electrode should be used.
In order to prevent the stamping reducer from being attacked by the eye due to heating, the welding current should not be too large, about 20% less than the carbon steel electrode, the arc should not be too long, and the layer is fast cold, and the narrow bead is suitable.
Source: China Stamping Reducer Manufacturer – Yaang Pipe Industry Co., Limited (www.yaang.com)