Lightweight cylinder sleeve and preparation process thereof

[0036] Example 1

[0037] see Figure 1-2 As shown, a lightweight cylinder liner includes a cylinder block 1, and several pits 2 are arranged on one side of the annular outer surface of the cylinder block 1, and the top of the pits 2 is an arc surface, and the annular outer surface of the cylinder block 1 has a There is a transmission shaft fixing hole 3 on the side;

[0038] The preparation process of the cylinder liner comprises the following steps:

[0039] Step S1, smelting casting fluid: Melting the following components in the melting furnace in weight percentage: C3.0, SI2.0, Mn0.4, P0.15, S0.06, Cr0.2, Mo0.3, Ni0 .4, bainite 1.19, ferrite 0.05, and the rest are pearlite;

[0040] Step S2, preparation of coating liquid: in parts by weight, take 3 parts of bentonite, 5 parts of diatomite, 25 parts of water, and 1 part of titanium alloy powder, add bentonite to water and stir in advance, control the speed and duration of the stirring device, and then Add diatomaceous eart

[0051] Example 2

[0052] see Figure 1-2 As shown, a lightweight cylinder liner includes a cylinder block 1, and several pits 2 are arranged on one side of the annular outer surface of the cylinder block 1, and the top of the pits 2 is an arc surface, and the annular outer surface of the cylinder block 1 has a There is a transmission shaft fixing hole 3 on the side;

[0053] The preparation process of the cylinder liner comprises the following steps:

[0054] Step S1, smelting casting fluid: Melting the following components in the melting furnace in weight percentage: C3.4, SI2.7, Mn0.7, P0.1, S0.02, Cr0.4, Mo0.6, Ni0 .8, 3.54 bainite, 0.02 ferrite, and the rest are pearlite;

[0055] Step S2, preparation of coating liquid: in parts by weight, take 11 parts of bentonite, 50 parts of diatomite, 90 parts of water, and 3 parts of titanium alloy powder, add bentonite to water and stir in advance, control the speed and duration of the stirring device, and then Add diatomaceous ea

[0073] Example 3

[0074] see Figure 3-5 As shown, the centrifuge 4 for centrifugation includes a bottom plate 41, the upper end of the bottom plate 41 is fixedly equipped with a working drum 42, the inner output end of the working drum 42 is fixedly installed with a connecting cylinder 421, and a hollow cylinder 421 is provided inside the connecting cylinder 421. Circular groove 422, a plurality of clamping grooves 423 are provided at the positions around the inner wall of the hollow circular groove 422, and a rotating screw 424 is connected to the surrounding positions of the circular outer surface of the connecting cylinder 421 for rotation;

[0075] An embedded block 44 is clamped inside the card slot 423, and a built-in through slot 441 is opened inside the embedded block 44, and a movable flip cover 43 is movably connected to the upper end of the connecting cylinder 421;

[0076] Before placing the external mold inside the hollow circular groove 422, insert the embedded b