The Difference Between Cast Flange And Forged Flange

Flanges are an important connecting component in industrial production and are widely used in various pipes, valves, pumps, and other equipment. There are two main manufacturing processes for flanges: casting and forging, each with unique characteristics and advantages.

This article will analyze the differences between cast flanges and forged flanges from the perspectives of process flow, performance characteristics, and application fields and help you appreciate the charm of industrial manufacturing.

Process Flow

Cast Flange

It is to pour molten metal liquid into a pre-made mold, cool it, and solidify it to form a flange of the required shape. The process flow of casting flange mainly includes the following steps:

(1) Making molds: Make corresponding molds according to the shape and size of the flange.

(2) Melting metal: Melt the metal raw materials to reach the required temperature and composition.

(3) Pouring: Pour the molten metal liquid into the mold.

(4) Cooling: Let the metal liquid cool naturally in the mold until it solidifies.

(5) Demolding: Remove the solidified flange from the mold.

(6) Cleaning: Remove burrs, sand and other impurities on the flange surface.

(7) Inspection: Check the size, appearance, internal quality and other aspects of the cast flange.

Forged Flange

This flange is to heat the metal material to a plastic state at a high temperature and plastically deform the metal through a press and other equipment to obtain a flange of the desired shape. The process flow of forged flange mainly includes the following steps:

(1) Cutting: Cut the metal material into suitable blanks according to the size and shape of the flange.

(2) Heating: Heat the blank to the forging temperature.

(3) Forging: Plastically deform the blank through a press to obtain a flange blank.

(4) Trimming: Remove excess metal around the flange blank.

(5) Heat treatment: Temper the forged flange to improve its mechanical properties.

(6) Machining: Turn and mill the flange to achieve the specified size and accuracy.

(7) Inspection: Check the size, appearance, internal quality, etc. of the forged flange.

Performance Characteristics

Casting Flange

(1) Advantages:

① Suitable for the manufacture of flanges with complex shapes and large sizes.

② One-time molding, high production efficiency.

③ Relatively low cost.

(2) Disadvantages:

① Poor internal quality, prone to defects such as pores and sand holes.

② Mechanical properties are not as good as forged flanges.

Forged Flange

(1) Advantages:

① Excellent mechanical properties, high tensile strength, elongation and other indicators.

② Good internal quality, no defects such as pores and sand holes.

③ Good pressure resistance, can withstand high pressure.

(2) Disadvantages:

① High production cost.

② Long production cycle.

③ High requirements for molds and equipment.

Application Fields

Casting Flange

They are widely used in low-pressure, room-temperature, and highly corrosive media transportation fields, such as chemical, petroleum, and light industry. Due to its low cost, it is also suitable for some occasions where the requirements are not very high.

Forged Flange

They are widely used in high-pressure, high-temperature, and high-strength media transportation fields, such as aerospace, shipbuilding, and electric power. They are also widely used in construction, automobiles, rail transportation, and other fields.

Summary

Casting flanges and forged flanges have significant differences in process flow, performance characteristics, and application fields. They each play an important role in industrial manufacturing. When selecting flanges, the appropriate flange type should be selected based on actual needs, considering factors such as cost and performance.

With the development of science and technology, flange manufacturing technology is also constantly improving. The application of new materials, advanced equipment, intelligent production and other technologies has made the manufacturing level of flanges higher and higher. In future industrial production, cast flanges and forged flanges will continue to contribute to the development of my country’s industry and show the beauty of industrial manufacturing.

In short, a deep understanding of the difference between cast flanges and forged flanges can help us better understand industrial manufacturing and provide strong support for practical engineering applications. I hope this article inspires and helps readers explore the charm of industrial manufacturing together.