socket fittings processing method and standard

The socket tube comprises a straight section of a plastic wound structural wall pipe having an inner diameter slightly larger than an outer diameter of the connected plastic wound structural wall pipe, and a ring for sealing the expansion rubber ring is respectively arranged on the inner wall of the two ends of the straight pipe section In the groove, an expansion rubber ring is embedded in the sealing groove. The socket is connected to the pipe connected to the pipe. Commonly used in cast iron pipes and acid-resistant ceramic pipes. Insert a tube into the insert of the other tube end, fill the hemp or asbestos rope in the annulus, and then insert the glue (such as cement, acid-resistant mortar, etc.) to achieve the purpose of sealing.

First, the performance of the socket pipe fittings

The material of the socket pipe is mainly made of stainless steel, which is produced by using stainless steel. The stainless steel is inspected before the production of the pipe fittings to ensure the quality of the pipe fittings produced.

1. Path: The diameter of the socket pipe fitting is DN15-DN1200. The pipe diameter is produced according to this diameter. Otherwise, the pipe fittings produced do not meet the production scale and cannot be qualified.

2. Wall thickness: The wall thickness of the socket fitting is SCH5-SCH160. The wall thickness error of the pipe fittings produced should not exceed 5 mm. Do not have important differences in thickness. Ensure that the pipe fittings produced have the same wall thickness. It is not conducive to damage and affects the function of use.

3, the characteristics of the socket fittings

Anti-corrosion. Acid and alkali resistant. Long service life, reasonable price calculation, smooth surface, acid and alkali resistance, high temperature, reasonable price calculation, beautiful appearance and strong texture performance.

4. Use of socket fittings: The socket fittings are mainly used in the applications of water, beverage, beer, food, petrochemical, nuclear power, machinery, medical equipment, fertilizer, shipbuilding, waterproof treatment, pipeline, etc. Shows good use value.

Second, the processing method of socket pipe fittings

The socket tube parts processed by different processing methods of the socket tube have different processing properties and functions, and can exhibit different functions and values in use.

1. Forging method: The end or part of the pipe is punched out by a swaging machine to reduce the outer diameter. The common forging machine has a rotary type, a link type and a roller type. Stamping: The tube ends are expanded to the required size and shape with a tapered core on the press.

2, bending forming method: There are three methods are more commonly used, one method is called stretching method, the other method is called stamping method, the third is the familiar roller method, there are 3-4 rollers, two fixed rollers, one Adjust the roller, adjust the fixed roller distance, and the product pipe is bent. This method is widely used, and if the spiral tube is produced, the curvature can be increased.

3. Roller method: The core is placed in the tube, and the outer circumference is pressed by the roller for the round edge processing.

4, bulging method: one is to place rubber in the tube, the upper is compressed with a punch to make the tube convex shape; the other method is hydraulic bulging, filling the middle of the tube with liquid, * liquid pressure to drum the tube as needed The shape, like most of our commonly used bellows, is produced using this method.

5, rolling method: generally do not use the mandrel, suitable for the inner edge of the thick-walled tube.

Third, the socket pipe fitting leakage magnetic flux detection method

The basic principle of the leakage flux detection method is based on the high magnetic permeability of the ferromagnetic material. The magnetic permeability of the elbow corrosion defect is much smaller than the magnetic permeability of the elbow. The elbow is under the action of an external magnetic field. When magnetized, when there is no defect in the elbow, most of the magnetic lines pass through the steel pipe, and the magnetic lines are evenly distributed; when there is a defect inside the elbow, the magnetic lines of force are bent, and a part of the magnetic lines leak out of the surface of the steel pipe. By detecting the leakage flux that escapes from the surface of the magnetized elbow, it is possible to determine whether or not the defect exists.