A kind of cylinder liner and preparation technology thereof
A preparation process and technology of cylinder liner, applied in the field of manufacturing of cylinder liner, can solve problems such as poor bonding tightness between cylinder liner and aluminum alloy
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Embodiment 1
[0057] This embodiment provides a cylinder liner, such as figure 1 As shown, the outer circular surface of the cylinder liner randomly distributes depressions 1 and raised edges 2 that divide the adjacent depressions 1, and the raised edges 2 enclose the depressions 1, the depressions 1 include mesh, and the outer surface of the cylinder liner There are closed meshes 1-1 accounting for at least 10% of the total number of meshes on the circular surface, and the remaining meshes are intermittent meshes 1-2. Preferably, there are closed meshes 1-1 on the outer circular surface of the cylinder liner, accounting for 20-50% of the total number of meshes, and the remaining meshes are intermittent meshes.
[0058] Further, the diameter of the mesh of the depression 1 is 0.5-4.0mm, and the depth of the mesh is 0.1-0.6mm. Preferably, as Figure 2-7 Shown, the mesh depth is 0.2-0.4mm, more specifically, as image 3 As shown, the mesh depth is 428μm; Figure 5 As shown, the mesh depth...
Embodiment 2
[0064] This embodiment provides a cylinder liner and its preparation process. The preparation process of the low-circle-cast honeycomb-like or hill-like cylinder liner adopts a centrifugal casting process, which specifically includes the following steps:
[0065] (1) Smelting raw materials: adjust the chemical composition of molten iron, specifically: weigh the specified raw materials in proportion, use an intermediate frequency induction furnace to melt at 1550°C, and season according to the following weight raw material requirements: carbon: 3.3%; sulfur: <0.1% ; Silicon: 2.4%; Phosphorus: ≤0.4%; Manganese: 0.8%; Chromium: 0.25%; Copper: 1%, and the balance is iron to obtain molten iron;
[0066] (2) Tapping inoculation: the above-mentioned molten iron is tapped for inoculation, the tapping temperature is 1500° C., the inoculation adopts downstream inoculation, the inoculation amount is 0.5 wt%, and the inoculant is silicon strontium zirconium;
[0067] (3) Coating preparati...
Embodiment 3
[0073] This embodiment provides a cylinder liner and its preparation process. The preparation process of the low-circle-cast honeycomb-like or hill-like cylinder liner adopts a centrifugal casting process, which specifically includes the following steps:
[0074] (1) Smelting raw materials: adjust the chemical composition of molten iron, specifically: weigh the specified raw materials in proportion, use an intermediate frequency induction furnace to melt at 1480°C, and season according to the following weight raw material requirements: carbon: 3.5%; sulfur: <0.1% ; Silicon: 2.0%; Phosphorus: ≤0.4%; Manganese: 1.0%; Chromium: 0.1%; Copper: 1.5%, and the balance is iron to obtain molten iron;
[0075] (2) Tapping inoculation: the above-mentioned molten iron is tapped for inoculation, the tapping temperature is 1480°C, the inoculation adopts downstream inoculation, the inoculation amount is 0.7wt%, and the inoculant is silicon strontium zirconium;
[0076] (3) Paint preparation: ...
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Abstract
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Application Information
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