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    ZCCCT Tools Application in Auto Cylinder Liner

    Date:2020/04/10

    Concept of cylinder liner:

    Auto cylinder liner is abbreviation of automobile engine cylinder liner. It is a cylindrical part installed in the cylinder hole of the engine block, with the top pressed and sealed by cylinder head, containing reciprocating motional piston components.

    Cylinder liner is divided into two types: dry cylinder liner and wet cylinder liner. If the rear does not contact cooling water, it is called dry cylinder liner. If the rear contacts cooling water, it is called wet cylinder liner.


    Requirements for cylinder liner

    Cylinder liner should have sufficient strength and rigidity to bear the heat load and mechanical load

    Working surface of cylinder liner should has high precision and smooth finish, good wear resistance and corrosion resistance, good lubrication condition and reliable cooling conditions, ensuring reliable airtight and watertight for working volume and cooling water space, with proper port shape and cross section size.


    Main materials of cylinder liner

    At present, most of the diesel engine cylinder liner is made with cast iron and steel + quenching processing techniques. Cast iron materials have properties such as low cost, good manufacturability, wear resistance and good oil storage.

    Commonly used cast iron materials include: nodular cast iron, alloy cast iron, high phosphorus cast iron and boron cast iron, etc.

    Mainly applied steel materials include: 45、2Cr13、17-4PH, etc.

    Technological processes:

    Technological processes:

     Facing

    Parting and grooving

    Rough boring internal hole

    Rough external turning

    Semi-finishing external turning

    Internal hole chamfering

    Finish turning internal hole


    Facing ——95 degree D-type turning tools

     

    Tool:DCLNR2525M12  

    Insert:YBD152C/CNMA120416

    Cutting data:V=260m/min  f=0.2mm/r  ap=23mm


    Parting and grooving—Little Squirrel series parting and grooving tools


    Tool:QEGD2525R17

    Insert:YBG302/ZPGD0402-MG

    Cutting data:V=150m/min  f=0.2mm/r


    Rough boring internal hole—non-standard boring tools

    Tool:XMZ01-139-B50-SD14-05

    Insert:YBD152C/SDEX140606

    Cutting data:Vc=200m/min  f=0.5mm/r  ap=1.5mm


    Rough external turning—95 degree D-type turning tools

    Tool:DCLNR2525M12

    Insert:YBD152C/CNMA120416

    Cutting data:V=260m/min  f=0.2mm/r  ap=23mm

     

    Semi-finishing external turning

    Tool:DCLNR2525M12

    Insert:YBD152C/CNMA120412

    Cutting data:V=260m/min  f=0.15mm/r  ap=12mm

     


    Finish turning internal hole



    Tool:S40V-SCLCR12

    Insert:YBD152C/CCMW120404

    Cutting data:V=260m/min  f=0.1mm/r  ap=0.5mm



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