Features of the processing process of valve stems

During the opening and closing of the valves, the valve stems bear the force of pulling, pressing and twisting, and directly contacting the medium. At the same time, there is a relative friction exercise with the filler. Therefore At the temperature, there is sufficient strength, good impact toughness, resistance to wounding, and corrosion resistance.

There should be an anti -static mechanism at the contact of the valve stem and the sphere and the contact between the valve stem and the valve body to prevent static electricity from gathering on the sphere. The safety design of the valve stem should be prevented from being "blown out" under the pressure of the work.

Features of traditional valve processing process

1. Traditional valve stem threads use spiral flying knives, and threaded accuracy is inaccurate; and traditional dandruff wire is easy to damage the mold, which is easy to deform and distorted.

2. The grinder is not high, and it takes a long time.

3. The inverted parts use twice to pull the head and pull the winding seal.

4. The end site is used to make the composition of the milling machine, the processing is slow, the process is large, and the time is long.

The characteristics of the new valve stem manufacturing process

1. The new valve stem thread is made of self -made, the thread is high, and the accuracy is accurate.

2. The same concept of the thread and the light rod parts overcomes the problem of twisting and damaging the filamentous mold in the long -term troublesomeness of the domestic rolling technology.

3. The accuracy of the light rod is effective, easy to open and closed, and the seal is good.

4. The inverted parts use a CNC technology for one time, high accuracy, and good sealing performance.

5. The T -shaped groove of the end site adopts a forging molding process with high efficiency and low cost.

6. The entire set of valve stem production technology has reached the international advanced level under the condition of strong corrosion, volatile, and toxic and harmful. Once the valve stem seal is destroyed, strong corrosion, volatile, and toxic and harmful process medium leaks from the control valve valve stem. Come out will bring serious consequences to the surrounding environment and personal safety. The use of ripple tube valve stem sealing is a way to solve the above problems. The ripple tube is generally made of stainless steel. This special valve cover structure protection control valve fillers avoid contact with fluids. Once the wavelet tube is ruptured, the filler structure on the ripple tube can prevent the serious consequences produced when the wavelet tube is broken. In the actual situation of the project, the selection of ripples and sealing forms should fully consider the rated value of the pressure of the sealing of the ripple tube. Essence When stainless steel is not resistant to certain processing media corrosion places, such as the process medium is wet chlorine, the trace hydrochloric acid contained in wet chlorine gas will cause stainless steel ripples to be corroded quickly. Ound