Oil cylinder anti-corrosion method

Abstract

The invention belongs to the field of hydraulic oil cylinders, and particularly relates to an oil cylinder anti-corrosion method which comprises a hydraulic oil cylinder base body, and the inner surface of the hydraulic oil cylinder base body is covered with a metal ceramic layer. The metal ceramic layer comprises the following raw materials in percentage by mass: 10-30% of chromium, 6-10% of silicon, 30-40% of iron, 3-13% of carbon and 15-20% of nickel; the wear-resistant hydraulic oil cylinder has the beneficial effects that the manufactured hydraulic oil cylinder is good in wear resistance and good in machining process performance and stability, compared with an existing hydraulic oil cylinder, the service life of the wear-resistant hydraulic oil cylinder is prolonged by more than two times, the use efficiency is improved, and meanwhile the use cost is reduced.

Description

Technical Field

[0001] The invention belongs to the field of hydraulic cylinders, and in particular relates to an anti-corrosion method for cylinders. Background Art

[0002] The hydraulic cylinder consists of 5 basic components: cylinder barrel and cylinder head, piston and piston rod, sealing device, buffer device, and exhaust device.

[0003] The cylinder tube (TUBE) consists of four parts: cylinder body, flange, cylinder bottom, and bushing; the piston rod (ROD) consists of three parts: rod body, earring, and bushing.

[0004] The plunger part of the hydraulic cylinder needs to continuously extend out of the cylinder barrel during operation. After extending out of the cylinder barrel, it is easily corroded by oxides and acidic gases. This will quickly shorten the life of the plunger in the long run, and thus shorten the life of the hydraulic cylinder. Summary of the invention

[0005] The object of the present invention is to provide a method for anti-corrosion of hydraulic cylinders, which can improve the wear resistance of hydraulic cylinders and improve their corrosion resistance, thereby increasing the service life of hydraulic cylinders, reducing use costs and improving work efficiency.

[0006] In an embodiment of the present invention, a method for preventing corrosion of a hydraulic cylinder is provided, comprising a hydraulic cylinder substrate, wherein the inner surface of the hydraulic cylinder substrate is covered with a metal ceramic layer; the metal ceramic layer comprises the following raw materials in terms of mass percentage: Chromium 10-30%, silicon 6-10%, iron 30-40%, carbon 3-13%, nickel 15-20%, molybdenum 1-2%, glass beads 3-5%, silicon dioxide 5-7%.

[0007] Preferably, the mixed powder is clad by a laser cladding process to form a metal ceramic layer fixed on the inner surface of the hydraulic cylinder substrate of the hydraulic cylinder. Because the chromium and carbon in the mixed powder have high melting points, during the laser cladding process, chromium and carbon form a hard phase chromium carbide, which becomes the main wear-resistant component of the metal ceramic layer, thereby improving the wear resistance of the metal ceramic layer.

[0008] Preferably, pre-set laser cladding is used to pre-place metal ceramic powder on the inner surface of the cylinder barrel substrate of the hydraulic cylinder, and then laser beam irradiation scanning is used to melt it so that it is combined with the hydraulic cylinder substrate to form a whole.

[0009] The beneficial effect of the present invention is that the manufactured hydraulic cylinder not only has good wear resistance, but also has good processing performance and stability. Compared with the existing hydraulic cylinder, its service life is increased by more than 2 times, the use efficiency is improved, and the use cost is reduced. DETAILED DESCRIPTION

[0010] The technical solutions in the embodiments of the present invention are described clearly and completely below. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention. Embodiment 1

[0011] A method for preventing corrosion of a hydraulic cylinder includes a hydraulic cylinder substrate, wherein the inner surface of the hydraulic cylinder substrate is covered with a metal ceramic layer; the metal ceramic layer includes the following raw materials in terms of mass percentage: Chromium 10%, silicon 6%, iron 30%, carbon 3%, nickel 20%, molybdenum 1%, glass beads 5%, silicon dioxide 5%.

[0012] Preferably, the mixed powder is clad by a laser cladding process to form a metal ceramic layer fixed on the inner surface of the hydraulic cylinder substrate of the hydraulic cylinder. Because the chromium and carbon in the mixed powder have high melting points, during the laser cladding process, chromium and carbon form a hard phase chromium carbide, which becomes the main wear-resistant component of the metal ceramic layer, thereby improving the wear resistance of the metal ceramic layer.

[0013] Preferably, pre-set laser cladding is used to pre-place metal ceramic powder on the inner surface of the cylinder barrel substrate of the hydraulic cylinder, and then laser beam irradiation scanning is used to melt it so that it is combined with the hydraulic cylinder substrate to form a whole. two

[0014] A method for preventing corrosion of a hydraulic cylinder includes a hydraulic cylinder substrate, wherein the inner surface of the hydraulic cylinder substrate is covered with a metal ceramic layer; the metal ceramic layer includes the following raw materials in terms of mass percentage: Chromium 10%, silicon 10%, iron 40%, carbon 13%, nickel 15%, molybdenum 1%, glass beads 3%, silicon dioxide 7%.

[0015] Preferably, the mixed powder is clad by a laser cladding process to form a metal ceramic layer fixed on the inner surface of the hydraulic cylinder substrate of the hydraulic cylinder. Because the chromium and carbon in the mixed powder have high melting points, during the laser cladding process, chromium and carbon form a hard phase chromium carbide, which becomes the main wear-resistant component of the metal ceramic layer, thereby improving the wear resistance of the metal ceramic layer.

[0016] Preferably, pre-set laser cladding is used to pre-place metal ceramic powder on the inner surface of the cylinder barrel substrate of the hydraulic cylinder, and then laser beam irradiation scanning is used to melt it so that it is combined with the hydraulic cylinder substrate to form a whole. Embodiment 3

[0017] A method for preventing corrosion of a hydraulic cylinder includes a hydraulic cylinder substrate, wherein the inner surface of the hydraulic cylinder substrate is covered with a metal ceramic layer; the metal ceramic layer includes the following raw materials in terms of mass percentage: Chromium 30%, silicon 10%, iron 30%, carbon 3%, nickel 15%, molybdenum 2%, glass beads 3%, silicon dioxide 7%.

[0018] Preferably, the mixed powder is clad by a laser cladding process to form a metal ceramic layer fixed on the inner surface of the hydraulic cylinder substrate of the hydraulic cylinder. Because the chromium and carbon in the mixed powder have high melting points, during the laser cladding process, chromium and carbon form a hard phase chromium carbide, which becomes the main wear-resistant component of the metal ceramic layer, thereby improving the wear resistance of the metal ceramic layer.

[0019] Preferably, pre-set laser cladding is used to pre-place metal ceramic powder on the inner surface of the cylinder barrel substrate of the hydraulic cylinder, and then laser beam irradiation scanning is used to melt it so that it is combined with the hydraulic cylinder substrate to form a whole.

[0020] The above shows and describes the basic principles and main features of the present invention and the advantages of the present invention. It is obvious to those skilled in the art that the present invention is not limited to the details of the above exemplary embodiments, and the present invention can be implemented in other specific forms without departing from the spirit or basic features of the present invention. Therefore, no matter from which point of view, the embodiments should be regarded as exemplary and non-restrictive. The scope of the present invention is defined by the attached claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims are included in the present invention. Any figure mark in the claims should not be regarded as limiting the claims involved.

[0021] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. A method for anti-corrosion of oil cylinders, characterized in that: The invention comprises a hydraulic cylinder base body, the inner surface of which is covered with a metal ceramic layer; the metal ceramic layer comprises the following raw materials in terms of mass percentage: Chromium 10-30%, silicon 6-10%, iron 30-40%, carbon 3-13%, nickel 15-20%, molybdenum 1-2%, glass beads 3-5%, silicon dioxide 5-7%.

2. Through the laser cladding process, the mixed powder is clad to form a metal ceramic layer fixed on the inner surface of the hydraulic cylinder matrix hydraulic cylinder. Because the melting points of chromium and carbon in the mixed powder are relatively high, during the laser cladding process, chromium and carbon form a hard phase chromium carbide, which becomes the main wear-resistant component of the metal ceramic layer, thereby improving the wear resistance of the metal ceramic layer.

3. The oil cylinder anti-corrosion method according to claim 1, characterized in that: By using preset laser cladding, metal ceramic powder is pre-placed on the inner surface of the cylinder barrel matrix of the hydraulic cylinder, and then melted by laser beam irradiation scanning to combine it with the hydraulic cylinder matrix to form a whole.

4. The oil cylinder anti-corrosion method according to claim 1, characterized in that: The invention comprises a hydraulic cylinder base body, the inner surface of which is covered with a metal ceramic layer; the metal ceramic layer comprises the following raw materials in terms of mass percentage: Chromium 10%, silicon 6%, iron 30%, carbon 3%, nickel 20%, molybdenum 1%, glass beads 5%, silicon dioxide 5%.

5. The oil cylinder anti-corrosion method according to claim 1, characterized in that: The invention comprises a hydraulic cylinder base body, the inner surface of which is covered with a metal ceramic layer; the metal ceramic layer comprises the following raw materials in terms of mass percentage: Chromium 10%, Silicon 10%, Iron 40%, Carbon 13%, Nickel 15%; Molybdenum 1%, glass beads 3%, silicon dioxide 7%.

6. The oil cylinder anti-corrosion method according to claim 1, characterized in that: The invention comprises a hydraulic cylinder base body, the inner surface of which is covered with a metal ceramic layer; the metal ceramic layer comprises the following raw materials in terms of mass percentage: Chromium 30%, silicon 10%, iron 30%, carbon 3%, nickel 15%, molybdenum 2%, glass beads 3%, silicon dioxide 7%.