valve

The shape of disc springs is conical disc, which is suitable for small installation space and heavy machinery or mould with large load. At present, engineers in Europe, America, Japan and other advanced countries have widely used Belleville springs in mechanical components. In addition to the consideration of safety performance, it also replaces the disadvantages of the traditional coil spring, such as limited use space, limited load and excessive compression stroke, and improves the mechanical performance.
Features: 1. Short selection distance and heavy load; 2. Small space; convenient combination; 3. Easy maintenance; 4. High economy and safety; 5. Long service life.
Main applications: rolling mill, high pressure switch control mechanism, valve, construction machinery, disc brake, machine tool spindle.
1. Temperature resistance range: - 180 ~ 600 ℃ mubea disc spring;
2. Features
◇ the pre tightening force relaxation caused by thermal expansion and cold shrinkage changes repeatedly due to the different speed of thermal expansion and cold shrinkage of the connecting parts such as bolts and flanges. The high-temperature disc spring keeps the pre tightening force stable to prevent bolt fatigue and gasket failure.
◇ the disc spring can compensate for the change of preload caused by the change of medium pressure, so as to prevent the failure of bolt and gasket.
◇ the recovery force of the spring can effectively balance the bolt looseness caused by the mechanical vibration, so as to ensure the long-term reliability of the equipment.
3. Material: alloy steel imported from Germany
4. Application equipment
◇ electric furnace, rolling mill, flying shear, swing shear, double-sided shear, etc.
High pressure switch, high temperature heater, etc.
◇ petrochemical heat exchanger, pressure vessel, reactor, etc.
◇ pipeline flange, high pressure valve, etc.
◇ pre tighten the flange and anchor bolt of pump, fan and centrifuge.
Standard: the disc spring shall comply with din2092 design standard and din2093 manufacturing standard.
Material: Inconel718 51CrV4 x22crmov121 17-7ph.
Mubea Belleville spring installation guide
1. Model of Belleville spring: P n 1801 57, size: 200X 102x5.5, t '= 5.3, Lo = 7.
2. The whole length direction of the inner guide element and all elements contacting with the spring shall be hardened and polished. The polished surface roughness Ra is less than 3.2um, and the hardness is greater than 55HRC.
3. A certain clearance is required between the spring and the guide to ensure that the lubricant has sufficient flow space and the guide is correct. The inner guide is adopted, and the total guide clearance is 1.0mm according to the disc inner diameter of 102mm, that is, the clearance between the single side and the guide piece is 0.5mm. As shown in Figure A: T = 1.0 mm.
4. Make sure that the spring surface is free of any scratches during installation. The scratch of spring surface will affect its fatigue life.
5. Springs must be used with oil or lubricant.