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• Collecting of valve spindles Cleaning and sandblast
• Visual inspection
• Reception of initial measurements
• Turning of lathe of worn out valves until we reach in
healthy metal,] (cleaning of all surfaces, surface of
contact, diameter)
• Penetrate crack detection with acute liquids for the
localization by any chance crack with method DYE - CHECK
• Warm-up 150O C
• Crack repair if required
• Recondition with stainless wire in diameter and seat
• Turning of lathe
• Warm-up in 300 C
• Deposition stellite 6 mm.
• Final passes of recondition
• Maintenance of temperature (300 C) in the all passes of
final recondition
• Cruelty of metal in 400 C.
• Slow refrigeration in temperature of environment
• Turning of lathe in order that the valve acquires her
standard dimensions base of drawing of constructor
• Rectify of surface of contact of seat of - valve
• Tackling with the elements of our work shop
SPACE OF COMBUSTION OF VALVE SPINDLES
• Cleaning sandblast
• Turning of lathe of space of combustion
• DYE - CHECK and localization crack
• Warm-up in 150 C
• Recondition with stainless steel in the sole in the valve
• Turning of lathe in final dimensions with
base the drawing of constructor
• Opening of holes
• Tackling valve with elements of our work shop
STEM OF VALVES
• Initial measurements
• Initial treatment in rectify, until we have clean diameter
• Hard chromium took place with the method of electrolyze
• Final treatment in rectify in standard dimensions
VALVE RECONDITION NIMONIC
• Turning of lathe and check with acute liquids
• Pre –Warming up 300 - 350 C
• Maintenance of temperature during of all of reconditioning
• Wire of reconditioning THERMANIT 617 1,2 mm or
U 520 Co - G F1.6 mm
• Layers of reconditioning until 10
• Reintroduction: 4-hour in their 650[o] C.
• Flowingly slow refrigeration in temperature of environment,
with precaution from currents
• Turning of lathe of seat and rectify
• Turning of lathe of combustion area.
• Chromium took place in the stem of in the event deterioration
• Tackling with the elements of our workshop