What are the types of flange blanks

The cast flange has accurate blank shape and size, small processing amount and low cost, but it has casting defects (air hole, crack and inclusion); The streamline of the internal structure of the casting is poor (even worse if it is a cutting part);
A few low-quality flange castings are cast. For small castings with high dimensional accuracy requirements, special castings can be used, such as permanent mold casting, precision casting, pressure casting, investment casting and centrifugal casting. The disadvantage is that such flanges are mostly made of “Shanxi Baked Iron”, which is easy to leak during use.
Flange blank
Forged flange blank
The forging flange blank can obtain continuous and uniform metal fiber structure after forging. Therefore, the mechanical properties of such blanks are good, and they are often used in environments with complex forces. The precision and productivity of free forgings are relatively low, and they are mainly used for small batch production and large flange manufacturing.
Hot coil flange blank
Hot coil flange blank is made by rolling steel blank into flat steel by hot coil machine through heating furnace, which is an advanced flange blank manufacturing form in China. Compared with the traditional flange manufacturing process, the hot coil process invented by Henan Changtong Technology has the following obvious advantages: (1) All raw materials are standard square billet, which is stable and reliable;
(2) The flatness and ovality of the blank can be accurately controlled to minimize the processing amount;
(3) High blank processing precision, and the machining efficiency is increased by 50%;
(4) High yield, material ratio up to 1.25-1.35;
(5) . Compared with the traditional process, the newly developed raised flange blank product saves about 24% of raw materials;
(6) . Energy saving and consumption reduction. Compared with the traditional process, the new process can save 60% of coal consumption and 40% of power consumption per ton of flange;
(7) The size can be adjusted according to customer requirements.