Process
Designing, Preparation, Compression, Casting, Molding, Pressure Die Casting, Machining and Finishing.
Equipment
Die-Casting Machines(800T, 600T, 350T), Chemical Analysis, Mechanical Test Instruments, Heat Treatment Facilities
Material & Standard
Aluminum Alloys, Zinc Alloys, etc.
ASTM, AISI, GB, DIN, JIS, SAE, UNS, EN, JP
Application
Automotive Industry, Construction, Lighting, Machinery, Agricultural, etc.
Capability
Weight
0.02-5 kg(0.044-11 lbs)
Dimensions
300mm(11.75") Max
Secondary Operations
CNC Machining, Milling, Threading, Drilling, High Precision Grinding, Sand Blaster, etc.
Surface: Painting, Plating, Black Electro-Phoresis, Dacro Coating, Polishing, etc.
Die Casting Die Casting,Die Cast Parts,Aluminium Die Casting Parts,Aluminum Die Casting Components J.B MACHINERY (NINGBO) CO., LTD. , https://www.jbcastings.com
1. Valve and piping flange surface should be no damage, scratches, etc., and keep clean. Especially when using metal washers, the notch of the flange should be matched with the washer, and the research should be done with red lead to ensure the sealed condition is good. 2. Piping on the flange surface and the pipe centerline vertical and flange bolt hole error should be within the allowable value range. Valve and piping center line to be consistent, in the installation. 3. When connecting the two flanges, first of all, make the flange sealing surface and the gasket evenly pressed, thus ensuring that the flange is connected by the same bolt stress. 4. When tightening the bolts, use a wrench that matches the nut. When using hydraulic and pneumatic tools for tightening, be careful not to exceed the specified torque. 5 flange fastening to avoid uneven force, should be in accordance with the symmetry, the direction of reciprocal screwed together. 6. After flange installation, make sure all bolts and nuts are tightened evenly. 7. Bolts, nuts, the material must meet the regulations. After tightening, the bolt head should be exposed from the nut two pitch appropriate. 8. Bolt and nut tightening, in order to prevent the vibration caused by the loose, use gaskets. In order to avoid high temperature adhesion between the threads, threaded parts should be coated with anti-adhesive installation. 9. For high-temperature valves above 300 ℃, after the temperature rises, the flange connection bolts, valve cover fastening bolts, pressure seals and packing gland bolts must be tightened again. 10. Low-temperature valve at the time of installation is in the state of atmospheric temperature, due to the formation of temperature, flanges, gaskets, bolts and nuts shrink, and because these parts of the material is not the same, the respective linear expansion coefficient Different, forming a very easy to leak environmental conditions. From this objective situation, when fastening the bolts at atmospheric temperature, the moment that takes into account the shrinkage of the various components at low temperatures must be used. More Keywords Search: Valve