Honing the Cylinder Liner
When we are going to insert a new liner it is mirror finished,if oil is added it will slip and effective lubrication will not be there . So wear of liner will take so to prevent it honing is done to make a honing groove so that the the oil can retain in liner.
When we are going to insert a new liner it is mirror finished,if oil is added it will slip and effective lubrication will not be there . So wear of liner will take so to prevent it honing is done to make a honing groove so that the the oil can retain in liner.
In order to obtain a round cylindrical cylinder liner a factory honing is required. A honing as described below can only be regarded as a second best solution and might have an impact on the time between
overhaul as well as on the lub. oil consumption.Renovation is made in the workshop.Prior to honing, deposits of coke and possible wear edges at the top of the liner must be removed by scraping.
A used flame ring must be used during the honing process.
The used flame ring must be cleaned in water. Subsequently, the flame ring is remounted in the cylinder before carrying out the honing process.
Note: Upon completion of the honing process the used flame ring is discarded. A new flame ring is always mounted in the cylinder when replacing the piston rings.
The honing is made by means of a flex-honer with grain fineness 80-120. A revolution speed between 80 and 160 rpm is chosen.In order to achieve a required angle between honing grooves, see fig 3, the vertical speed is adjusted to about 1 m/sec. which corresponds to about 2 sec.
for one double movement (the flex- honer is led from below up and down in 2 sec.)
The procedure must be continued until the cylinder wall is covered by honing grooves and the surface has a slightly matt appearance without any signs
of glaze.During the honing it is important to lubricate freely with honing oil or cutting oil.After the honing, the liner is carefully cleaned with gas oil. Make sure that all abrasive particles are removed.
overhaul as well as on the lub. oil consumption.Renovation is made in the workshop.Prior to honing, deposits of coke and possible wear edges at the top of the liner must be removed by scraping.
A used flame ring must be used during the honing process.
The used flame ring must be cleaned in water. Subsequently, the flame ring is remounted in the cylinder before carrying out the honing process.
Note: Upon completion of the honing process the used flame ring is discarded. A new flame ring is always mounted in the cylinder when replacing the piston rings.
The honing is made by means of a flex-honer with grain fineness 80-120. A revolution speed between 80 and 160 rpm is chosen.In order to achieve a required angle between honing grooves, see fig 3, the vertical speed is adjusted to about 1 m/sec. which corresponds to about 2 sec.
for one double movement (the flex- honer is led from below up and down in 2 sec.)
The procedure must be continued until the cylinder wall is covered by honing grooves and the surface has a slightly matt appearance without any signs
of glaze.During the honing it is important to lubricate freely with honing oil or cutting oil.After the honing, the liner is carefully cleaned with gas oil. Make sure that all abrasive particles are removed.
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