How to select a good rubber pneumatic butterfly valve?
Do you know how to select rubber pneumatic butterfly valve? Now let's learn how to select rubber pneumatic butterfly valve:
First of all, we should fully understand its own characteristics, and then leave the environment of demand application to stop the selection. Its advantage is that the rubber itself is very flexible and light. In some places where the weight needs to be paid attention to, for example, it is best to use rubber damping products for high-speed rotor damping to avoid new imbalance caused by its overweight.
The damping spring pneumatic butterfly valve itself has incomparable sealing performance, and no matter how tight it is, it is only elastic deformation, and its own volume has almost no change. Assuming that in the hydraulic environment, it is necessary to not only play a role in vibration reduction, but also seal to prevent the liquid from overflowing, such a place must be the only one, and there is no better choice. Rubber is also corrosion resistant. Assuming that in some severe corrosive environments, such as the consumer workshops of many chemical plants, it is better to use rubber shock absorbers if the central demand for shock absorbers.
At the same time, due to the characteristics of the product itself, there are many places where the rubber products industry is very unsuitable. First of all, rubber will become brittle at minus 30 degrees, and lose its own elastic deformation. At this time, it will not play a role in vibration reduction. Therefore, in a too cold environment, do not use rubber shock absorption products to avoid the expected effect. Rubber also cannot withstand high temperatures. Just exceed 75 degrees Celsius, its internal structure will change, its elasticity will disappear intact, and of course, it will no longer have any function of vibration reduction. If the temperature continues to rise, it may be extinguished. Therefore, it is assumed that it should not be used in a very high temperature environment, otherwise, it will not play the expected role in reducing vibration and may cause accidents.
Our company mainly consumes rubber metal pneumatic butterfly valves, which are widely used in automobiles, ships, machinery, aviation, bridges, ground rails, energy, chemicals, military industry, etc. The main supporting customers of military products are China North Vehicle Research Institute. The company has the ability to produce 100000 pieces of rubber metal pneumatic butterfly valves annually. The company has domestic advanced consumption and testing equipment, accounting for 1000 square meters of air space. We are committed to low cost manufacturing and professional customer service. "Careful manufacturing, continuous improvement, high-quality service, customer satisfaction" is our constant pursuit!

The technological performance of titanium material is far inferior to that of stainless steel, so the corrugated parameters should be selected appropriately. The high yield ratio of titanium indicates that titanium has poor plastic deformation during forming, and the control requirements for forming pressure during forming are very high. In order to avoid damage to the bellows compensator during forming, the mold should be strictly cleared before forming, and there should be no rust, granular residue and other defects, The inner surface of tube embryo shall be cleared and cleaned with film for maintenance, and coated with high temperature anti oxidation paint. When it is dried, the heat carrier oil system shall be used to stop heating the cylinder to 320 ° C, then stop pressing and mold loading, and slowly pressurize. When a certain pressure is reached, the thin shell of tube embryo between the molds will bulge, stop the pump to maintain the pressure after the drum wave, and remove the cushion block between the molds, Replace it with a cushion block of one-time forming height, start the press, axially tighten the tube blank, and at the same time start the pump to pressurize, adhere to the shaking of the forming pressure within the control range of the process request, continue to move the end mold and middle mold of the tube blank under the axial pushing of the hydraulic press, and the waveform slowly expands until all the molds are close to each other, which is the opening of the mold. During this time, check the sliding condition of the mold, To ensure the average clearance between them and prevent the offset compensator from happening, hydraulic forming, rolling forming, mechanical bulging and other methods can be used

As the temperature rises, the processing performance of titanium plate is better and the forming rate is higher, so we temporarily set the temperature of heat carrier oil heating cylinder as 320 ℃. According to the assessment, the maximum operating temperature of QB heat transfer fluid is 300 ℃, the maximum operating temperature of QC heat transfer fluid is 320 ℃, and the maximum operating temperature of QD heat transfer fluid is 350 ℃, Therefore, we finally choose QD heat conduction fluid bellows compensator to be formed by hydraulic forming, rolling forming and mechanical bulging. However, due to the large cold deformation resistance of titanium, serious rebound, poor plastic deformation ability, and cold work hardening during processing, the method of using heat carrier oil system to stop heating the cylinder for hydraulic forming has the following characteristics:, During the forming process, the TA10 cylinder is gradually heated up under the influence of the heat carrier oil. With the increase of temperature, its plastic deformation is better. Use an infrared thermometer to measure and heat it to 320 ℃, and then stop pressing. The bellows compensator manufactured by hydraulic forming is of good quality. The most common forming method of bellows is the inspection of the heat carrier oil system of the compensator