A coating liquid for preparing a needle-shaped cylinder liner, comprising the following components: 0.05-0.4 parts of an anionic surfactant; 0.05-0.5 parts of tannic acid; 0.15-0.7 parts of caustic soda; 22-38 parts of diatomite; 3-10 parts of montmorillonite; and 62-75 parts of water. A method for preparing a needle-shaped cylinder liner comprises spraying a coating liquid for preparing the needle-shaped cylinder liner onto the inner wall of a hollow cylindrical mould, and drying the coating liquid to obtain a mould with a coating attached to the surface of the inner wall; adding an inoculated iron liquid into the rotary mould, and cooling and demoulding to obtain a cylinder liner blank; and subjecting the blank to outer surface cleaning and forming machining to obtain the needle-shaped cylinder liner.
B22C 3/00 - Selection of compositions for coating the surfaces of moulds, cores, or patterns
B22D 13/02 - Centrifugal castingCasting by using centrifugal force of elongated solid or hollow bodies, e.g. pipes, in moulds rotating around their longitudinal axis
C04B 35/14 - Shaped ceramic products characterised by their compositionCeramic compositionsProcessing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on oxides based on silica
C04B 35/622 - Forming processesProcessing powders of inorganic compounds preparatory to the manufacturing of ceramic products
C04B 35/626 - Preparing or treating the powders individually or as batches
Provided are a cylinder liner having an inner coating and a preparation method thereof. The cylinder liner comprises a cylinder liner base body and the coating composited on an inner surface of the cylinder liner base body, and the surface roughness Rz of the coating ranges from 50 μm to 200 μm. A coating material is coated on the inner surface of the cylinder liner to form the coating. Engine cylinders equipped with the cylinder liner have the effects of low friction, high wear resistance and low fuel consumption.
A coating liquid for preparing a needle-shaped cylinder liner, comprising the following components: 0.05-0.4 parts of an anionic surfactant; 0.05-0.5 parts of tannic acid; 0.15-0.7 parts of caustic soda; 22-38 parts of diatomite; 3-10 parts of montmorillonite; and 62-75 parts of water. A method for preparing a needle-shaped cylinder liner comprises spraying a coating liquid for preparing the needle-shaped cylinder liner onto the inner wall of a hollow cylindrical mould, and drying the coating liquid to obtain a mould with a coating attached to the surface of the inner wall; adding an inoculated iron liquid into the rotary mould, and cooling and demoulding to obtain a cylinder liner blank; and subjecting the blank to outer surface cleaning and forming machining to obtain the needle-shaped cylinder liner.
A thermal spraying apparatus and thermal spraying system, and a thermal spraying technique thereof. The thermal spraying apparatus comprises: an electric arc spraying device (06), a rotating work platform (01), a spraying fixture (02), a wire rack (07), and a main controller (08). The electric arc spraying device (06) is provided at an external periphery of the rotating work platform (01). The spraying fixture (02) is circumferentially disposed on the rotating work platform (01). Every spraying fixture (02) rotates by means of a driving force provided by a motor. The wire rack (07) is disposed at the periphery of the rotating work platform (01). Each of the wire rack (07) corresponds to an electric arc spraying device (06). The main controller (08) is controllably connected to a rotating work platform (01). The thermal spraying system further comprises a sand blasting and surface roughening equipment. The thermal spraying technique performs electric arc spraying on a silicon aluminum wire. By rotating the rotating work platform and moving the spraying fixture to different work positions, the thermal spraying apparatus can perform, by means of the electric arc spraying device, a thermal spraying operation in a sequence to realize a production line for a spraying process. The invention improves spraying efficiency and spraying quality when compared to a manual hand-held electric arc sprayer.
C23C 4/12 - Coating by spraying the coating material in the molten state, e.g. by flame, plasma or electric discharge characterised by the method of spraying
B05B 17/04 - Apparatus for spraying or atomising liquids or other fluent materials, not covered by any other group of this subclass operating with special methods
A high strength cast iron material for application in heavy duty diesel engines with Pa peak cylinder pressure greater than 240 bar is disclosed, the material a ductile material austempered to get a ausferrite matrix structure with higher mechanical properties than conventional cast iron materials available by using a designed low cost alloying cast material with heat treatment. Furthermore, the cylinder liner may be formed using novel heat treatment and/or fine honing processes to improve the properties thereof.
C21D 9/08 - Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articlesFurnaces therefor for tubular bodies or pipes
C21D 1/19 - HardeningQuenching with or without subsequent tempering by interrupted quenching
C22C 38/16 - Ferrous alloys, e.g. steel alloys containing copper
C22C 38/08 - Ferrous alloys, e.g. steel alloys containing nickel
C22C 38/04 - Ferrous alloys, e.g. steel alloys containing manganese
C22C 38/02 - Ferrous alloys, e.g. steel alloys containing silicon
A high strength cast iron material for application in heavy duty diesel engines with Pa peak cylinder pressure greater than 240 bar is disclosed, the material a ductile material austempered to get a ausferrite matrix structure with higher mechanical properties than conventional cast iron materials available by using a designed low cost alloying cast material with heat treatment. Furthermore, the cylinder liner may be formed using novel heat treatment and/or fine honing processes to improve the properties thereof.
A cylinder liner is disclosed, the cylinder liner having a smoother internal surface of an internal side than known cylinder liners. The internal surface having at least one of a reduced peak height of (Rpk) of ≤0.25 μm, a core roughness (Rk) of about 0.2 μm to about 0.6 μm, a reduced valley depth (Rvk) of about 1.2 μm to about 2.5 μm, a material ratio (Mr1) of ≤10%, and a material ratio (Mr2) of about 70% to about 90%.
C21D 1/19 - HardeningQuenching with or without subsequent tempering by interrupted quenching
C21D 9/08 - Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articlesFurnaces therefor for tubular bodies or pipes
C22C 38/02 - Ferrous alloys, e.g. steel alloys containing silicon
C22C 38/04 - Ferrous alloys, e.g. steel alloys containing manganese
C22C 38/08 - Ferrous alloys, e.g. steel alloys containing nickel
C22C 38/12 - Ferrous alloys, e.g. steel alloys containing tungsten, tantalum, molybdenum, vanadium or niobium
C22C 38/16 - Ferrous alloys, e.g. steel alloys containing copper
B24B 33/02 - Honing machines or devicesAccessories therefor designed for working internal surfaces of revolution, e.g. of cylindrical or conical shapes
Cylinder liners, methods of forming the same, and outer surface designs of a cylinder liner having as-cast projections with certain functional shapes are provided. The as-cast projections increase the clamping performance of the cylinder liner and do not result in any air gaps between a cast aluminum block and the cylinder liner.
B22D 13/00 - Centrifugal castingCasting by using centrifugal force
B22D 21/00 - Casting non-ferrous metals or metallic compounds so far as their metallurgical properties are of importance for the casting procedureSelection of compositions therefor
B22D 25/02 - Special casting characterised by the nature of the product by its peculiarity of shapeSpecial casting characterised by the nature of the product of works of art
A cylinder liner is disclosed, the cylinder liner having a smoother internal surface of an internal side than known cylinder liners. The internal surface having at least one of a reduced peak height of (Rpk) of ≦0.25 μm, a core roughness (Rk) of about 0.2 μm to about 0.6 μm, a reduced valley depth (Rvk) of about 1.2 μm to about 2.5 μm, a material ratio (Mr1) of ≦ 10%, and a material ratio (Mr2) of about 70% to about 90%.
engine components, namely, piston rings, cylinder liners, pistons and piston pins for use in gasoline and diesel engines of vehicles and in industrial machines
engine components, namely, piston rings, cylinder liners, pistons and piston pins for use in gasoline and diesel engines of vehicles and in industrial machines
Engine components, namely, cylinder blocks, cylinder liners, pistons, and piston pins, all for use in gasoline and diesel engines of vehicles and in industrial machines
