Technology and equipment for ICE crankshaft pneumodynamic strengthening
It's used for pneumodynamic strengthening of crankshaft fillets in diesel engines D-240 and D-260, restored by thermal spraying coatings.
Competitive advantages:
- increase in the depth of the cold working layer by 30...38%
- increase in the tensile strength of the crankshafts of diesel engines when bending by 1.7...2.0 times
- reduction of the crankshaft shift factor by 2.0 times
- increased durability of restored and strengthened crankshafts by 2.0 times
Features of the development:
The equipment allows to use a steel ball as a working material for increasing the maximum unit pressure of the rolling by 26...32%, which leads to the increase in the depth of the cold working layer by 30...38%.
A set of equipment for pneumodynamic strengthening of ICE crankshafts:
- pneumodynamic installation
- pneumodynamic rolling machine
Application
Instrument and mechanical engineering In the Republic of Belarus - gear welding, in Russian Federation - electron beam welding installations, coatings, liquid, and solid-state hardening, composite material sintering.
Performance:
- rolling machine working medium - steel ball ?3
- the pressure of the pneumatic circuit, MPa - 0.6
- rolling speed, m/s-26.5
- the depth of the cold working layer, mm-0.55...0.65
- maximum unit pressure of the rolling, MPa - 500...650
- the cost of strengthening one crankshaft D-240 when reaching the design capacity, thousand BYN/ USD-201.7/ 93.8
- development costs payback period - 1.8 years
Application:
Manufacturing and introduction into the repair production of JSC "Vitebsk Motor Repair Plant".
Suggestions:
- development of design and technological documentation for the implementation of the pneumodynamic crankshaft fillets strengthening in diesel ICE
- participation in co-production with the transfer of technology (knowledge)
- research and production co-operation in the implementation of pneumodynamic strengthening of diesel ICE crankshaft fillets