Electric saw guide plate based on inorganic non-metallic material and preparation method

Abstract

The invention discloses an electric saw guide plate based on an inorganic non-metallic material and a preparation method, the electric saw guide plate comprises a guide plate base body made of a nodular cast iron material, the outer surface of the guide plate base body is provided with a solid lubricating layer, and the solid lubricating layer comprises the following materials in percentage by weight: 6-12% of graphite powder; 15%-20% of MoS2; 1%-4% of Al < 2 > O < 3 >; 30% to 60% of Fe2O3; and the balance of inorganic non-metallic material impurities. The non-metal guide plate is researched, so that the guide plate is light, the original forest lumbering operation is facilitated, meanwhile, the non-metal guide plate has a lubricating effect, and the friction coefficient generated by a saw chain and the guide plate can be reduced without continuously adding lubricating oil instead of continuously adding the lubricating oil to the original metal guide plate; the heat is reduced, the service life of the electric saw guide plate is prolonged, the use amount of lubricating oil is reduced, the use cost of an electric saw is reduced, forest pollution caused by splashing of a large amount of lubricating oil to an original forest is avoided, and the use requirements of people when the electric saw guide plate is used are met.

Description

Technical Field

[0001] The invention relates to the technical field of electric saw guide plates, and in particular to an electric saw guide plate based on inorganic non-metallic materials and a preparation method thereof. Background Art

[0002] An electric chain saw refers to an electric woodworking tool that uses a rotating chain saw blade for sawing, in which the guide plate is an important component that supports the chain and enables the chain to operate smoothly. After the electric chain saw is powered on, the motor rotates, and the output shaft of the motor drives the sprocket to rotate, thereby driving the chain saw blade to slide at high speed in the guide groove on the guide plate. When the electric chain saw is in operation, its linear speed is generally around 14 meters per second. Due to friction, a large amount of heat will be generated. If the chain saw blade is not lubricated in time, the chain saw blade will easily overheat, causing damage to the chain and guide plate. Therefore, oiling and lubrication are very important measures. Originally, the metal guide plate needs to be lubricated to reduce the friction coefficient generated by the saw chain and the guide plate, and the guide plate made of metal materials is prone to cause a large amount of lubricating oil to splash when the electric saw is working, which not only affects the heat dissipation performance of the metal guide plate, but also causes certain environmental pollution. Therefore, a non-metallic electric saw guide plate is needed to solve the problem. Summary of the invention

[0003] In order to achieve the above-mentioned purpose, the present invention specifically adopts the following technical solutions:

[0004] An electric saw guide plate based on inorganic non-metallic materials includes a guide plate substrate made of ductile cast iron material, the outer surface of the guide plate substrate is provided with a solid lubricating layer, and the weight percentage of the solid lubricating layer material is: graphite powder 6%-12%; MoS2 15%-20%; Al2o3 1%-4%; Fe2O3 30%-60%; the rest are inorganic non-metallic material impurities.

[0005] Furthermore, the weight percentages of the solid lubricating layer materials are as follows: graphite powder 10.1%; MoS2 18.5%; Al2O3 2.6%; Fe2O3 55.8%; and the rest are inorganic non-metallic material impurities.

[0006] Furthermore, the inorganic non-metallic material impurities include Si in an amount of 1% to 1.8% by weight.

[0007] Furthermore, a method for preparing a chainsaw guide plate based on an inorganic non-metallic material comprises the following steps:

[0008] S1: Matrix quenching, degreasing, heating the ductile iron workpiece to the upper limit of Ac1 + 30℃-50℃, keeping it warm for 1-4h, then quickly cooling and degreasing to obtain the heat treatment process of martensite and spheroidal graphite structure;

[0009] S2: Mixed powder layer is used as the base, copper and copper oxide powder are laid on the outer surface of the guide plate substrate (1), and the guide plate substrate is sent into a sintering furnace for sintering for 2 hours at a sintering temperature of 800° C. The thickness of the mixed powder layer is 0.2 mm;

[0010] S3: Powder layer sintering, laying graphite powder, MoS 2、 The powder layer of Al2O3 and Fe2O3 is sent into a sintering furnace for sintering for 2.5-4 hours. The sintering temperature is 900℃ and the thickness of the mixed powder layer is 5mm.

[0011] S4: Tempering and oil soaking: the product obtained in S3 is sent into a sintering furnace for tempering for 2 hours at a tempering temperature of 910°C. The product is taken out and then immersed in oil for cooling;

[0012] S5: Polishing and coating. The surface of the product obtained in S4 is polished with a polishing machine, and a layer of waterproof penetration film is coated on the surface of the product.

[0013] Furthermore, in S4, after the product is cooled, pressure is used to compact the product so that the solid lubricating layer and the guide plate substrate are more closely attached, and the compacting force is 350 MPa.

[0014] Furthermore, in S1, after the substrate is cooled, the cooling oil remaining on the surface of the substrate is completely absorbed using oil-absorbing paper with a cleaning agent.

[0015] Furthermore, in S3, the sintering time is equally divided into five time periods, and the temperatures in the five time periods are 650°C, 700°C, 800°C, 850°C and 900°C respectively.

[0016] Furthermore, in S3, when laying graphite powder, MoS 2、 Before Al2o3 and Fe2O3, graphite powder, MoS 2、 Al2o3 and Fe2O3 are mixed evenly.

[0017] Furthermore, in S5, the waterproof permeable membrane is a polyethylene geomembrane.

[0018] The beneficial effects of the present invention are as follows:

[0019] The present invention studies non-metallic guide plates so that the guide plates are lightweight and convenient for logging operations in virgin forests. At the same time, the non-metallic guide plates have their own lubricating effect, so that the original metal guide plates, which need to continuously add lubricating oil to reduce the friction coefficient between the saw chain and the guide plates, no longer need to continuously add lubricating oil to reduce the friction coefficient, thereby reducing heat and increasing the service life of the electric saw guide plates, reducing the amount of lubricating oil used, and reducing the cost of using the electric saw. It will not cause a large amount of lubricating oil to splash into the virgin forest and cause forest pollution. The electric saw guide plate and the non-metallic lubricating material have their own complementary advantages, and not only have a high load-bearing capacity, but also break through the limit of general metals relying on oil film grease lubrication, and realize oil-free or low-oil lubrication. The lubricating oil is easy to form a lubricating film, which greatly improves its friction and wear performance. It is stable, reliable, cost-effective, and has a strong load-bearing capacity. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a front view structural schematic diagram of the present invention;

[0021] Figure 2 It is a schematic diagram of the process flow of the method for preparing a guide plate of an electric saw of the present invention;

[0022] Figure numerals: 1. Guide plate base. DETAILED DESCRIPTION

[0023] To make the purpose, technical solution and advantages of the embodiments of the present invention more clear, the technical solution in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention.

[0024] Embodiment 1

[0025] like Figure 1-2 As shown, an electric saw guide plate based on inorganic non-metallic materials and a preparation method thereof include a guide plate substrate 1 made of spheroidal cast iron material, and a solid lubricating layer is provided on the outer surface of the guide plate substrate 1, and the weight percentage of the solid lubricating layer material is: 6%-12% of graphite powder;

[0026] MoS215%-20%; Al2o31%-4%; Fe2O330%-60%; the rest are inorganic non-metallic material impurities. By studying the non-metallic guide plate, the guide plate is made lightweight and convenient for logging operations in the primeval forest. At the same time, the non-metallic guide plate has its own lubricating effect, which can make the original metal guide plate need to continuously add lubricating oil to reduce the friction coefficient between the saw chain and the guide plate. Now there is no need to continuously add lubricating oil to reduce the friction coefficient, reduce heat and increase the service life of the electric saw guide plate, reduce the amount of lubricating oil, and reduce the cost of using the electric saw. It will not cause a large amount of lubricating oil to splash into the primeval forest and cause forest pollution. The electric saw guide plate and non-metallic lubricating material have their own complementary advantages. They not only have a high load-bearing capacity, but also break through the limit of general metal relying on oil film grease lubrication, and realize oil-free or low-oil lubrication. The lubricating oil is easy to form a lubricating film, which greatly improves its friction and wear performance. It is stable, reliable, cost-effective, and has a strong load-bearing capacity.

[0027] Embodiment 2

[0028] In this embodiment, the method for preparing a chainsaw guide plate based on inorganic non-metallic materials is characterized by comprising the following steps:

[0029] S1: Matrix quenching, degreasing, ductile iron workpiece is heated to Ac1 upper limit + 30℃-50℃, kept warm for 1-4h, then quickly cooled and degreased to obtain martensite and spheroidal graphite structure heat treatment process. After the matrix is ​​cooled, use oil-absorbing paper with detergent to absorb the cooling oil remaining on its surface. The quenching heating temperature of ductile iron should not be too high, generally 860℃-900℃, so as not to obtain coarse martensite and excessive residual austenite after quenching and deteriorate the performance of the workpiece. When there are more free cementite in the structure, high-temperature graphitization can be carried out first, and then the temperature can be lowered to the quenching temperature and kept warm before quenching. The holding time should not be too long. In addition, the holding time is also related to the microstructure of ductile iron: when the ductile iron is fine and the amount of pearlite is large, the holding time should be shorter; on the contrary, when the ductile iron is coarse and the amount of pearlite in the matrix is ​​small (even ferrite matrix), the holding time should be appropriately extended;

[0030] S2: Mixed powder layer is used as the base, copper tire and copper oxide powder are laid on the outer surface of the guide plate substrate 1, and it is sent into a sintering furnace for sintering for 2 hours. The sintering temperature is 800°C, and the thickness of the mixed powder layer is 0.2mm;

[0031] S3: Powder layer sintering, laying graphite powder, MoS 2、The powder layer of Al2O3 and Fe2O3 is sent into the sintering furnace for 2.5-4 hours. The sintering temperature is 900℃, and the thickness of the mixed powder layer is 5mm. The sintering time is divided into 5 time periods. The temperatures of the 5 time periods are 650℃, 700℃, 800℃, 850℃ and 900℃ respectively. 2、 Before Al2o3 and Fe2O3, graphite powder, MoS 2、 Al2O3 and Fe2O3 are mixed evenly to ensure the uniformity of the powder layer, thereby ensuring the effect of the lubricating layer. The gradual temperature increase in time periods prevents the powder layer from being suddenly exposed to excessively high temperatures and cracking.

[0032] S4: Tempering and oil immersion. The product obtained in S3 is sent into a sintering furnace for tempering for 2 hours at a tempering temperature of 910°C. The product is taken out and immersed in oil for cooling. After the product is cooled, it is pressed by pressure so that the solid lubricating layer and the guide plate substrate 1 are more closely attached. The pressing force is 350 MPa to eliminate stress and obtain the required structure and performance.

[0033] S5: grinding and coating. The surface of the product obtained in S4 is polished with a polishing machine, and a layer of waterproof permeable membrane is coated on the surface of the product. The waterproof permeable membrane is a polyethylene geomembrane to prevent water from penetrating into the guide plate substrate 1 to damage the guide plate substrate 1, thereby extending the service life of the electric saw guide plate.

[0034] Embodiment 3

[0035] In this embodiment, the weight percentage of the solid lubricating layer material is: graphite powder 10.1%; MoS2 18.5%; Al2o3 2.6%; Fe2O3 55.8%; the rest are inorganic non-metallic material impurities. After the graphite material is treated with oil immersion, the graphite itself can absorb the lubricating oil. After overheating due to friction movement, due to the expansion of the graphite material, the graphite will leak oil outward, thereby improving the lubrication effect of the electric saw guide plate. MoS2 also has self-lubricating properties, and is combined with graphite powder to further improve the lubrication performance of the electric saw guide plate, reduce the use of lubricating oil, and reduce the cost of using the electric saw.

[0036] Embodiment 4

[0037] In this embodiment, the inorganic non-metallic material impurities include Si in an amount of 1%-1.8% by weight. Si can enhance the tensile and compressive strengths of the solid powder layer, improve the wear resistance, increase the thermal conductivity of the solid powder layer, increase the flame retardancy, and Si also has strong corrosion resistance.

[0038] The above description of the disclosed embodiments enables one skilled in the art to implement or use the present invention. Various modifications to these embodiments will be apparent to one skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will not be limited to the embodiments shown herein, but rather to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. An electric saw guide plate based on inorganic non-metallic materials, comprising a guide plate substrate (1) made of ductile cast iron material, characterized in that: The outer surface of the guide plate substrate (1) is provided with a solid lubricating layer, and the weight percentage of the material of the solid lubricating layer is: 6%-12% of graphite powder; MoS2 15%-20%; Al2o3 1%-4%; Fe2O3 30%-60%; the rest are inorganic non-metallic material impurities.

2. The electric saw guide plate based on inorganic non-metallic materials according to claim 1, characterized in that: The weight percentages of the solid lubricating layer materials are as follows: graphite powder 10.1%; MoS2 18.5%; Al2O3 2.6%; Fe2O3 55.8%; and the rest are inorganic non-metallic material impurities.

3. The electric saw guide plate based on inorganic non-metallic material according to claim 1 or 2, characterized in that: The inorganic non-metallic material impurities include Si in an amount of 1% to 1.8% by weight.

4. A method for preparing a saw guide plate based on inorganic non-metallic materials, characterized in that: The following steps are involved: S1: Matrix quenching, degreasing, heating the ductile iron workpiece to the upper limit of Ac1 + 30℃-50℃, keeping it warm for 1-4h, then quickly cooling and degreasing to obtain the heat treatment process of martensite and spheroidal graphite structure; S2: Mixed powder layer is used as the base, copper and copper oxide powder are laid on the outer surface of the guide plate substrate (1), and the guide plate substrate is sent into a sintering furnace for sintering for 2 hours at a sintering temperature of 800° C. The thickness of the mixed powder layer is 0.2 mm; S3: Powder layer sintering, laying graphite powder, MoS 2、 The powder layer of Al2O3 and Fe2O3 is sent into a sintering furnace for sintering for 2.5-4 hours. The sintering temperature is 900℃ and the thickness of the mixed powder layer is 5mm. S4: Tempering and oil soaking: the product obtained in S3 is sent into a sintering furnace for tempering for 2 hours at a tempering temperature of 910°C. The product is taken out and then immersed in oil for cooling; S5: Polishing and coating. The surface of the product obtained in S4 is polished with a polishing machine, and a layer of waterproof penetration film is coated on the surface of the product.

5. The method for preparing an electric saw guide plate based on inorganic non-metallic materials according to claim 4, characterized in that: In S4, after the product is cooled, pressure is used to compact the product so that the solid lubricating layer and the guide plate substrate (1) are more closely attached, and the compacting force is 350 MPa.

6. The method for preparing an electric saw guide plate based on inorganic non-metallic materials according to claim 4, characterized in that: In S1, after the substrate is cooled, the cooling oil remaining on the surface is completely absorbed using oil-absorbing paper with a cleaning agent.

7. The method for preparing an electric saw guide plate based on inorganic non-metallic materials according to claim 4, characterized in that: In S3, the sintering time is equally divided into five time periods, and the temperatures in the five time periods are 650°C, 700°C, 800°C, 850°C and 900°C respectively.

8. The method for preparing an electric saw guide plate based on inorganic non-metallic materials according to claim 4, characterized in that: In S3, graphite powder, MoS 2、 Before Al2o3 and Fe2O3, graphite powder, MoS 2、 Al2o3 and Fe2O3 are mixed evenly.

9. The method for preparing an electric saw guide plate based on inorganic non-metallic materials according to claim 4, characterized in that: In the above S5, the waterproof and permeable membrane is a polyethylene geomembrane.

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