5μm~7μm Diamond Composite Plating‑ Diamond Coating‑ Product Center‑ DAOLER Diamond Friction Shims
Diamond plating mainly refers to electroless nickel plating and electro‑nickel plating on diamond surfaces to modify electrical conductivity, so that diamond wires can be manufactured. Currently, 5 μm~7 μm diamond‑plated products are mainly used in the photovoltaic industry.
Page 1
There are five failure modes for bolted connections: shear fracture of bolt shank; bearing failure of hole wall; tensile fracture of steel plate; shear fracture of steel plate; bending of bolt shank.
Failure of threaded connections is mainly manifested as torque decay, crushing of connected components, thread stripping, bolt loosening and fracture, etc. Let us analyze the force condition of shear bolts. For shear bolts under low external load, external force is transmitted by friction between components. When the external load exceeds the ultimate frictional force, relative slip occurs between components. The bolt shank comes into contact with the hole wall and bears shear force, while the hole wall bears bearing pressure.
Shear tests on bolt‑connected specimens record the full process from zero load up to connection failure, which goes through four stages.
Elastic stage of friction force transfer: At the initial stage of loading with low applied load, load is transmitted by frictional force on the contact surface between components. The clearance between bolt shank and hole wall remains unchanged, and the connection operates in elastic state. The magnitude of friction between plates depends on the initial tensile force in bolt shank generated by nut tightening and the static friction coefficient between mating plates.
Slip stage: As load rises, the shear force within the connection reaches the maximum frictional force between components. Relative slip takes place between plates. The maximum slip distance equals the clearance between bolt shank and hole wall, until the bolt contacts the hole wall.
Elastic stage of force transfer by bolt shank: With further load increase, external load borne by the connection is mainly transferred through contact between bolt shank and hole wall. Apart from dominant shear force, the bolt shank also bears bending moment and axial tensile force; meanwhile the hole wall is under bearing pressure. Elongation of the bolt shank is constrained by the nut, which increases compressive force between plates and further raises inter‑plate friction. Eventually the bolt or connecting plate reaches its elastic limit.
Ultimate bearing capacity of shear bolted connection: Connection fails and the whole system loses function.
It can be concluded that installing friction shims to raise the static friction coefficient and frictional force between plates can greatly improve the bearing capacity of bolted connection systems and prevent system failure.
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A wind‑power generator converts wind energy into mechanical energy, and further converts mechanical energy into electric energy. Wind drives the rotation of fan blades; a gearbox increases rotational speed to drive the generator for power generation.
Blades capture wind energy and convert it into electric power via the nacelle. The tail vane keeps blades facing incoming wind for maximum wind‑energy capture. The yaw assembly enables flexible rotation of the nacelle for directional adjustment by the tail vane. The rotor inside the nacelle is a permanent magnet; the stator winding cuts magnetic‑field lines to generate electricity. Power transmission is realized through mechanical connections: For horizontal‑axis wind turbines, rotor blades are connected via main shaft, gearbox low‑speed shaft, high‑speed shaft and flexible coupling, transmitting torque to the generator drive shaft. While ensuring stable power transmission for each subsystem of the wind turbine, the position and fixation of all components inside the nacelle must not shift under any circumstances.
The adoption of friction shims can significantly boost power‑transmission performance and operational safety factor of wind‑turbine systems. They are widely applied to flange joints and bolt‑mounting positions of key nacelle equipment, such as hub flange connections of blades, main‑shaft‑gearbox connecting flanges / planet carriers, main‑shaft bearing housings, gearbox mounting bases, brake fixtures and pitch‑control assemblies.
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Diamond friction shims are special gaskets designed to deliver extra frictional force and wear resistance on frictional contact interfaces. Diamond is an extremely hard material with outstanding wear resistance and high‑temperature resistance. Therefore, diamond friction shims are used for sealing and friction‑related applications under high‑friction, high‑temperature and high‑pressure working conditions. They serve multiple industrial sectors including automobile manufacturing, aerospace and general machinery. Diamond friction shims help improve sealing performance, reduce frictional loss and extend service life of equipment.
Page 4
Diamond friction shims cover a wide range of application fields, including but not limited to the items listed below:
1. Automobile Manufacturing: Diamond friction shims can be used for friction pairs between brake discs and brake pads in automotive braking systems for enhanced wear resistance and thermal stability.
2. Aerospace: Diamond friction shims apply to friction systems of aircraft engines, such as pneumatic sealing rings for turbojet engines.
3. Mechanical Manufacturing: Diamond friction shims are adopted for bearings, gears and sliding pairs of high‑speed mechanical equipment to deliver superior frictional performance and wear resistance.
4. Petrochemical Industry: Diamond friction shims are used in sealing systems for petrochemical equipment such as pumps, valves and pipelines to improve sealing performance and corrosion resistance.
5. Electronics Industry: Diamond friction shims are applied to friction‑transmission parts of semiconductor manufacturing equipment such as cutting blades and polishing heads for improved wear resistance and operational stability.
In summary, diamond friction shims are extensively adopted across various industrial sectors requiring high frictional performance, wear resistance and high‑temperature resistance.
Page 1
There are five failure modes for bolted connections: shear fracture of bolt shank; bearing failure of hole wall; tensile fracture of steel plate; shear fracture of steel plate; bending of bolt shank.
Failure of threaded connections is mainly manifested as torque decay, crushing of connected components, thread stripping, bolt loosening and fracture, etc. Let us analyze the force condition of shear bolts. For shear bolts under low external load, external force is transmitted by friction between components. When the external load exceeds the ultimate frictional force, relative slip occurs between components. The bolt shank comes into contact with the hole wall and bears shear force, while the hole wall bears bearing pressure.
Shear tests on bolt‑connected specimens record the full process from zero load up to connection failure, which goes through four stages.
Elastic stage of friction force transfer: At the initial stage of loading with low applied load, load is transmitted by frictional force on the contact surface between components. The clearance between bolt shank and hole wall remains unchanged, and the connection operates in elastic state. The magnitude of friction between plates depends on the initial tensile force in bolt shank generated by nut tightening and the static friction coefficient between mating plates.
Slip stage: As load rises, the shear force within the connection reaches the maximum frictional force between components. Relative slip takes place between plates. The maximum slip distance equals the clearance between bolt shank and hole wall, until the bolt contacts the hole wall.
Elastic stage of force transfer by bolt shank: With further load increase, external load borne by the connection is mainly transferred through contact between bolt shank and hole wall. Apart from dominant shear force, the bolt shank also bears bending moment and axial tensile force; meanwhile the hole wall is under bearing pressure. Elongation of the bolt shank is constrained by the nut, which increases compressive force between plates and further raises inter‑plate friction. Eventually the bolt or connecting plate reaches its elastic limit.
Ultimate bearing capacity of shear bolted connection: Connection fails and the whole system loses function.
It can be concluded that installing friction shims to raise the static friction coefficient and frictional force between plates can greatly improve the bearing capacity of bolted connection systems and prevent system failure.
Page 2
A wind‑power generator converts wind energy into mechanical energy, and further converts mechanical energy into electric energy. Wind drives the rotation of fan blades; a gearbox increases rotational speed to drive the generator for power generation.
Blades capture wind energy and convert it into electric power via the nacelle. The tail vane keeps blades facing incoming wind for maximum wind‑energy capture. The yaw assembly enables flexible rotation of the nacelle for directional adjustment by the tail vane. The rotor inside the nacelle is a permanent magnet; the stator winding cuts magnetic‑field lines to generate electricity. Power transmission is realized through mechanical connections: For horizontal‑axis wind turbines, rotor blades are connected via main shaft, gearbox low‑speed shaft, high‑speed shaft and flexible coupling, transmitting torque to the generator drive shaft. While ensuring stable power transmission for each subsystem of the wind turbine, the position and fixation of all components inside the nacelle must not shift under any circumstances.
The adoption of friction shims can significantly boost power‑transmission performance and operational safety factor of wind‑turbine systems. They are widely applied to flange joints and bolt‑mounting positions of key nacelle equipment, such as hub flange connections of blades, main‑shaft‑gearbox connecting flanges / planet carriers, main‑shaft bearing housings, gearbox mounting bases, brake fixtures and pitch‑control assemblies.
Page 3
Diamond friction shims are special gaskets designed to deliver extra frictional force and wear resistance on frictional contact interfaces. Diamond is an extremely hard material with outstanding wear resistance and high‑temperature resistance. Therefore, diamond friction shims are used for sealing and friction‑related applications under high‑friction, high‑temperature and high‑pressure working conditions. They serve multiple industrial sectors including automobile manufacturing, aerospace and general machinery. Diamond friction shims help improve sealing performance, reduce frictional loss and extend service life of equipment.
Page 4
Diamond friction shims cover a wide range of application fields, including but not limited to the items listed below:
1. Automobile Manufacturing: Diamond friction shims can be used for friction pairs between brake discs and brake pads in automotive braking systems for enhanced wear resistance and thermal stability.
2. Aerospace: Diamond friction shims apply to friction systems of aircraft engines, such as pneumatic sealing rings for turbojet engines.
3. Mechanical Manufacturing: Diamond friction shims are adopted for bearings, gears and sliding pairs of high‑speed mechanical equipment to deliver superior frictional performance and wear resistance.
4. Petrochemical Industry: Diamond friction shims are used in sealing systems for petrochemical equipment such as pumps, valves and pipelines to improve sealing performance and corrosion resistance.
5. Electronics Industry: Diamond friction shims are applied to friction‑transmission parts of semiconductor manufacturing equipment such as cutting blades and polishing heads for improved wear resistance and operational stability.
In summary, diamond friction shims are extensively adopted across various industrial sectors requiring high frictional performance, wear resistance and high‑temperature resistance.
