Manufacturing method of wear-resistant cylinder liner based on surface treatment
A technology of surface treatment and manufacturing method, which is applied in the direction of coating, fusion spraying, metal material coating process, etc., can solve the problems such as difficult to ensure the width of the hardened zone, uneven laser hardening, etc., to improve the spraying process and improve wear resistance performance and emission reduction
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specific Embodiment 1
[0031] SS01: Pretreatment: Grind the cylinder liner base on 500# water sandpaper until the surface is smooth without scratches, and degrease and activate the piston ring base; the weight percentage of each component of the cylinder liner base is as follows: C: 1.25% , Si: 0.25%, Mn: 0.6%, S: 0.003%, P: 0.004%, Nb: 0.15%, Ni: 0.19%, Mo: 0.84%, Cr: 8.2%, V: 0.07%, W: 0.02% , the rest is Fe;
[0032] SS02: Spray adhesive layer: use plasma spraying equipment to spray a layer of TiN layer on the surface of the cylinder liner substrate, the thickness of the TiN layer is 0.03mm, and the spraying distance is 145mm; when spraying, the current of the arc is set to 440A, and the voltage It is set to 68V; the powder used for spraying the TiN layer is Ti alloy powder, and the weight percentages of the components of Ti alloy powder are as follows: Ti: 82%, Fe: 0.03%, Cr: 3%, Si: 0.015%, C: 0.004% , Al: 0.008%, N: 0.03%;
[0033] SS03: Preheating: heating the workpiece to 110°C;
[0034] ...
specific Embodiment 2
[0038]SS01: Pretreatment: Grind the base of the cylinder liner on 400-800# water sandpaper until the surface is smooth without scratches, and degrease and activate the base of the piston ring; the weight percentage of each component of the base of the cylinder liner is as follows: C: 1.25~2.78%, Si: 0.25~0.6%, Mn: 0.6~0.9%, S: 0.003~0.005%, P: 0.004~0.007%, Nb: 0.15~0.22%, Ni: 0.19~0.38%, Mo: 0.84 ~1.57%, Cr: 8.2~10.5%, V: 0.07~0.13%, W: 0.02~0.05%, the rest is Fe;
[0039] SS02: Spraying adhesive layer: Spray a layer of TiN layer on the surface of the cylinder liner substrate with plasma spraying equipment, the thickness of the TiN layer is 0.03-0.045mm, and the spraying distance is 145-150mm; when spraying, the arc current is set The voltage is 440-455A, and the voltage is set at 68-70V; the powder used for spraying the TiN layer is Ti alloy powder, and the weight percentage of each component of the Ti alloy powder is as follows: Ti: 82-87.5%, Fe: 0.03-0.065%, Cr: 3-3.5%, S...
specific Embodiment 3
[0046] SS01: Pretreatment: Grind the base of the cylinder liner on 400-800# water sandpaper until the surface is smooth without scratches, and degrease and activate the base of the piston ring; the weight percentage of each component of the base of the cylinder liner is as follows: C: 1.25~2.78%, Si: 0.25~0.6%, Mn: 0.6~0.9%, S: 0.003~0.005%, P: 0.004~0.007%, Nb: 0.15~0.22%, Ni: 0.19~0.38%, Mo: 0.84 ~1.57%, Cr: 8.2~10.5%, V: 0.07~0.13%, W: 0.02~0.05%, the rest is Fe;
[0047] SS02: Spraying adhesive layer: Spray a layer of TiN layer on the surface of the cylinder liner substrate with plasma spraying equipment, the thickness of the TiN layer is 0.03-0.045mm, and the spraying distance is 145-150mm; when spraying, the arc current is set The voltage is 440-455A, and the voltage is set at 68-70V; the powder used for spraying the TiN layer is Ti alloy powder, and the weight percentage of each component of the Ti alloy powder is as follows: Ti: 82-87.5%, Fe: 0.03-0.065%, Cr: 3-3.5%, ...
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