1. Introduction to Flanges

A flange is a disc-shaped component used to connect pipelines, valves, pumps, pressure vessels, and other equipment. Its main function is to connect two pipes or devices together with bolts, ensuring sealing and stability. Flanges are an important part of piping systems and are widely used in industries such as petroleum, natural gas, chemical engineering, electric power, and food processing.

2. Flange Manufacturing Process

2.1 Casting Flange Manufacturing Process

Casting flanges are mainly manufactured through casting processes and are suitable for complex shapes and larger sizes.

Process:

Raw material preparation → Mold making → Metal pouring → Cooling and mold removal → Post-processing → Heat treatment (optional) → Inspection and quality control → Surface treatment

2.2 Forged Flange Manufacturing Process

Forged flanges are made by applying external force (such as a hammer or hydraulic press) to plastically deform the metal into the desired shape. Forged flanges offer higher strength and toughness, making them suitable for high-pressure and high-temperature environments.

Process:

Raw material preparation → Free forging or die forging → Precision machining → Heat treatment (optional) → Inspection and quality control → Surface treatment