Flange Silica Sol Investment Casting

Product Introduction

Flange

Flange is also called flange or flange. The part that connects the pipe to the pipe, is connected to the pipe end. There are holes in the flange, and the bolts tightly connect the two flanges. The flanges are sealed with gaskets. Flange is a disc-shaped part, the most common in pipeline engineering, flanges are used in pairs. In pipeline manufacturing, Flanges are mainly used for the link of pipelines. At the ends that need to connect the two pipelines, install a flange. deficient-pressure pipelines can use wire flanges and welding flanges with pressures greater than 4 kg. Add sealing points within the two flanges, immediately after tightening with bolts.

Flanges with different pressures have different thicknesses and use different bolts.

When the water pump and valve are connected to the pipeline, some parts of the equipment are also made into corresponding flange shapes, also called flange connections.

All connecting parts that are bolted and closed at the periphery of the two planes are generally called "flanges". For example, the connection of ventilation pipe, such parts can be called "flange parts".

The threaded flange is a kind of flange. The threaded flange connection structure is an assembly, which is composed of a pair of flanges, several bolts, nuts, and a gasket.

1/2"--30" threaded flange adopts the implementation standard: domestic standard

HG5051～5028-58, HG20592～20605-97, 20615～20326-97

HGJ44～68-91, SH3406-92, SH3406-96

SHJ406-89, SHT501-97, SYJS3-1-1～5

JB81～86-59, JB/T81～86-94, JB577-64

JB577-79, JB585-64, JB585-79

JB1157～1164-82, JB2208-80, JB4700～4707-92

JB4721-92, DG0500～0528, 0612～0616

GD0500～0528, GB9112～9125-88, GB/T13402-92

Application

Flange is also called flange or flange.

The part that connects the pipe to the pipe, is connected to the pipe end. There are holes in the flange, and the bolts tightly connect the two flanges. The flanges are sealed with gaskets. Flanged pipe fittings refer to pipe fittings with flanges (flanges or lands). It can be cast (unavailable in the figure), or it can be screwed or welded. Flange connection (flange, joint) consists of a pair of flanges, a gasket, and several bolts and nuts. The gasket is placed between the sealing surfaces of the two flanges. After the nut is tightened, the specific pressure on the surface of the gasket reaches a certain value and then deforms, and fills the unevenness on the sealing surface to make the connection tight. A flange connection is a detachable connection. According to the connected parts, it can be divided into a container flange and a pipe flange. According to the structure type, there are integral flange, loop flange, and threaded flange. Common integral flanges include flat welding flanges and butt welding flanges. Flat welding flanges have poor rigidity and are suitable for occasions where the pressure p≤4MPa; butt welding flanges, also known as high neck flanges, have higher rigidity and are suitable for occasions with higher pressure and temperature. There are three types of flange sealing surfaces: flat sealing surface, suitable for occasions with low pressure and non-toxic medium; concave-convex sealing surface, suitable for occasions with slightly higher pressure; toxic media and high-pressure occasions. The gasket is a ring made of a material that can produce plastic deformation and has a certain strength. Most of the gaskets are cut from non-metallic plates, or made by professional factories according to the specified size. The materials are asbestos rubber plates, asbestos plates, polyethylene plates, etc.; There is also a metal-clad gasket made of wrapped non-metallic materials; there is also a wound gasket made of thin steel strips and asbestos strips. Ordinary rubber gaskets are suitable for occasions where the temperature is lower than 120°C; asbestos rubber gaskets are suitable for occasions where the temperature of water vapor is lower than 450°C, the temperature of the oil is lower than 350°C, and the pressure is lower than 5MPa. Medium, the most commonly used is acid-resistant asbestos board. In high-pressure equipment and pipelines, Flange silica sol investment casting uses lens-shaped or other-shaped metal gaskets made of copper, aluminum, 10-gauge steel, and stainless steel. The contact width between the high-pressure gasket and the sealing surface is very narrow (line contact), and the processing finish of the sealing surface and the gasket is relatively high.

Flanges are divided into threaded (wire) flanges, welding flanges, and ferrule flanges. There are wire flanges and ferrule flanges for low-pressure small diameters, and welding flanges for high-pressure and low-pressure large diameters. The thickness of the flanges of different pressures and the diameter and number of connecting bolts are different.

Flange Gasket Standard

According to the different grades of pressure, flange pads also have different materials, ranging from low-pressure asbestos pads, and high-pressure asbestos pads to metal pads.

1. Divided by material into carbon steel, cast steel, alloy steel, stainless steel, copper, aluminum alloy, plastic, argon, ppr, etc.

2. According to the production method, it can be divided into forged flanges, cast flanges, spliced flanges, cut flanges, and rolled flanges (oversized models)

3. According to manufacturing standards, can be divided into national standards (standards of the Ministry of Chemical Industry, petroleum standards, electric power standards, standards of the Ministry of Machinery, marine standards), American Standards, German Standards, Japanese Standards, Russian Standards, etc.

Detection Systems

Copper Silica Sol Investment Casting