Forging characteristics of flange blank

The forging of flange blank can be divided into rotary forging, rotary forging, roll forging, cross wedge rolling, ring rolling and cross rolling according to the movement mode of forging die. Rotary forging, rotary forging and ring rolling can also be produced and processed by forging. In order to better improve the utilization rate of raw materials, roll forging and cross rolling can be used as the previous process of long and fine raw materials.

Like the free forging, the rotary forging is also partially formed. The advantage of the flange blank is that compared with the specification of steel castings, it can also be produced when the forging force is small. It is very possible to carry out deep machining of complicated steel castings with one or several technological processes. Because there is no burr, the total bearing area of steel castings will be reduced, and the necessary load will also be reduced.

Flange blank is applicable to carbon steel pipe connection with pound grade not exceeding 2.5cpa The raised surface of flange blank can be made into three types: smooth type, convex concave type and tenon and groove type Bright and clean large and medium vertical welding flanges are widely used It is often used under the condition that the material standard is relatively relieved, such as bottom pressure non clean air compression, bottom pressure cooling circulating water, and the advantage of flange blank is that the price is more cost-effective; General large and medium-sized vertical welding flange rubber pad is applicable to places with temperature less than 120 ℃; The asbestos rubber pad is applicable to places where the water vapor temperature is less than 450 ℃, the feed oil temperature is less than 350 ℃ and the working pressure is less than 5cpa. For general corrosive substances, acid resistant asbestos rubber plate is common.