High toughness bimetallic band saw blade

Abstract

The utility model relates to the field of band saw blade, and disclose a kind of high tough bimetallic band saw blade, including saw blade body and sawtooth, the side welding of saw blade body has sawtooth, further include being set in the multiple installation slots of linear equidistance distribution of saw blade body deviating from sawtooth side, liquid cooling heat dissipation structure is arranged in the installation slot, liquid cooling heat dissipation structure includes installation strip and liquid cooling pipe component, installation strip is equipped with multiple groups of linear equidistance distribution of liquid cooling pipe component, two groups of flexible lubricating structure are set to the both sides of installation strip, the flexible lubricating structure includes rubber strip and oil absorbing cotton, rubber strip is filled with oil absorbing cotton, oil absorbing cotton is infiltrated with lubricating oil, by cooling pipe, coolant and heat dissipation hole, cutting heat is quickly exported, avoid sawtooth high temperature softening and body thermal crack, flexible lubricating structure is by rubber strip, oil absorbing cotton and oil outlet hole, oil penetration friction reduction as needed, prevent tooth root deformation and tooth collapse, reduce body fatigue damage.

Description

Technical Field

[0001] This utility model relates to the field of band saw blades, specifically a high-strength and high-toughness bimetallic band saw blade. Background Technology

[0002] During the use of high-strength and high-toughness bimetal band saw blades, heat dissipation and lubrication are directly related to maintaining the core performance of the saw blade. Insufficient heat dissipation leads to tempering and softening of high-strength saw teeth, agglomeration of carbide particles and decrease in hardness, damage to the geometric accuracy of the tooth tip, and an increased risk of tooth breakage. At the same time, thermal stress causes significant temperature differences in the body and generates microcracks. Age hardening reduces toughness, resulting in a decrease in impact and bending capacity. If the heat dissipation cycle is repeated, thermal fatigue cracks will also form in the welding area from the tooth root to the base, reducing the overall strength and potentially leading to tooth breakage and reduced toughness of the saw blade.

[0003] Insufficient lubrication increases frictional resistance and lateral impact, significantly increases stress concentration at the tooth root, and easily leads to plastic deformation, tooth chipping, or tooth breakage. Fluctuations in cutting resistance cause high-frequency vibration, resulting in fatigue damage to the blade body, accompanied by surface scratches and coating damage. This leads to further attenuation of toughness under cyclic stress, ultimately reducing the overall durability and safety of the saw blade. To address this, we propose a high-strength and tough bimetallic band saw blade. Summary of the Invention

[0004] To address the shortcomings of existing technologies, this invention provides a high-strength and high-toughness bimetallic band saw blade, which solves the aforementioned problems.

[0005] To achieve the above-mentioned objectives, this utility model provides the following technical solution: a high-strength and high-toughness bimetallic band saw blade, comprising a saw blade body and saw teeth, wherein saw teeth are welded to one side of the saw blade body, and further comprising: Multiple mounting grooves are equidistantly distributed along a straight line on the side of the saw blade body away from the saw teeth. The width, depth, and distribution position of the mounting grooves do not affect the toughness of the saw blade body and the saw teeth. The liquid cooling heat dissipation structure is set in the mounting slot. The liquid cooling heat dissipation structure includes a mounting strip and a liquid cooling pipe assembly. The mounting strip is provided with multiple sets of liquid cooling pipe assemblies that are equidistantly distributed along a straight line. Each set of liquid cooling pipe assemblies is set in a corresponding mounting slot. Two sets of flexible lubrication structures are disposed on both sides of the mounting strip, and the two sets of flexible lubrication structures are disposed on both sides of the saw blade body; The flexible lubrication structure includes a rubber strip and oil-absorbing cotton. The rubber strip is filled with oil-absorbing cotton, and the oil-absorbing cotton is soaked in lubricating oil.

[0006] Preferably, one side of the mounting strip has a plurality of circular holes that are equidistantly distributed along a straight line, and the number and distribution of the circular holes correspond to the mounting groove.

[0007] Preferably, the liquid cooling pipe assembly includes cooling pipes, coolant, and silicone plugs. The open ends of multiple cooling pipes are fixedly connected to the side of the mounting strip with circular holes. Each cooling pipe corresponds to a circular hole, and the multiple cooling pipes are inserted into the corresponding mounting grooves. The side of the mounting strip connected to the cooling pipes is in contact with the side of the saw blade body away from the saw teeth. Each cooling pipe is filled with coolant, and each circular hole is fitted with a silicone plug.

[0008] Preferably, one side of the saw tooth is inclined to open through a plurality of heat dissipation holes 1 distributed equidistantly along a straight line, and the heat dissipation holes 1 penetrate into the mounting groove. The side of the saw tooth away from the heat dissipation holes 1 is inclined to open through a plurality of heat dissipation holes 2 distributed equidistantly along a straight line, and the heat dissipation holes 2 penetrate into the mounting groove. The heat dissipation holes 2 and the heat dissipation holes 1 are distributed at intervals, and one mounting groove corresponds to one heat dissipation hole 2 or one heat dissipation hole 1.

[0009] Preferably, each of the cooling pipes has a toothed groove on its outer cylindrical surface.

[0010] Preferably, trapezoidal grooves are provided on both sides of the mounting strip, with the long side of the trapezoidal groove inside the mounting strip.

[0011] Preferably, one side of the rubber strip is fixedly connected with a plurality of trapezoidal protrusions that are equidistantly distributed along a straight line. The trapezoidal protrusions correspond to the trapezoidal grooves, and the trapezoidal protrusions of the two rubber strips are slidably engaged with the trapezoidal grooves on both sides of the mounting strip.

[0012] Preferably, the side of the rubber strip opposite to the saw teeth is provided with a plurality of oil outlet holes that are equidistantly distributed along a straight line, and the oil outlet holes are distributed alternately with the heat dissipation hole one or heat dissipation hole two.

[0013] Compared with the prior art, this utility model provides a high-strength and high-toughness bimetal band saw blade, which has the following beneficial effects: This high-strength and tough bimetal band saw blade rapidly dissipates cutting heat through cooling pipes, coolant, and heat dissipation holes, preventing high-temperature softening of the saw teeth and thermal cracking of the blade body, thus ensuring high strength and toughness. The flexible lubrication structure uses rubber strips, oil-absorbing cotton, and oil outlet holes to release oil as needed, reducing friction, preventing tooth root deformation and tooth breakage, and reducing fatigue damage to the blade body. Furthermore, each component is detachable, facilitating fluid replenishment and cotton replacement, resulting in low maintenance costs. The structural layout avoids stress-sensitive areas, without compromising the saw blade's bending and fatigue resistance, ultimately ensuring stable core performance of the saw blade and significantly improving durability and safety in use. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the structure of this utility model.

[0015] Figure 2 This is an exploded view of the structure of this utility model.

[0016] Figure 3This is a cross-sectional schematic diagram of the liquid cooling heat dissipation structure of this utility model.

[0017] Figure 4 for Figure 3 A magnified view of part A in the diagram.

[0018] Figure 5 This is a cross-sectional schematic diagram of the flexible lubrication structure of this utility model.

[0019] In the diagram: 1. Saw blade body; 2. Saw teeth; 3. Mounting strip; 4. Rubber strip; 5. Silicone plug; 6. Heat dissipation hole one; 7. Mounting groove; 8. Coolant; 9. Cooling pipe; 10. Trapezoidal groove; 11. Circular hole; 12. Trapezoidal protrusion; 13. Oil-absorbing cotton; 14. Tooth groove; 15. Heat dissipation hole two; 16. Oil outlet. Detailed Implementation

[0020] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0021] Please see Figure 1-5 A high-strength and high-toughness bimetallic band saw blade includes a saw blade body 1 and saw teeth 2. The saw teeth 2 are welded to one side of the saw blade body 1. The blade also includes: Multiple mounting grooves 7 are equidistantly distributed along a straight line on the side of the saw blade body 1 away from the saw teeth 2. The width, depth and distribution of the mounting grooves 7 do not affect the toughness of the saw blade body 1 and the saw teeth 2. The liquid cooling heat dissipation structure is installed in the mounting slot 7. The liquid cooling heat dissipation structure includes the mounting strip 3 and the liquid cooling pipe assembly. The mounting strip 3 is provided with multiple sets of liquid cooling pipe assemblies that are equidistantly distributed along a straight line. Each set of liquid cooling pipe assemblies is installed in a corresponding mounting slot 7. Two sets of flexible lubrication structures are set on both sides of the mounting strip 3, and the two sets of flexible lubrication structures are on both sides of the saw blade body 1; The flexible lubrication structure includes a rubber strip 4 and an oil-absorbing cotton 13. The rubber strip 4 is filled with oil-absorbing cotton 13, and the oil-absorbing cotton 13 is impregnated with lubricating oil.

[0022] Furthermore, one side of the mounting strip 3 has a plurality of circular holes 11 that are equidistantly distributed along a straight line. The number and distribution of the circular holes 11 correspond to the mounting groove 7. The circular holes 11 are used to install liquid cooling pipe assemblies.

[0023] Furthermore, the liquid cooling pipe assembly includes cooling pipes 9, coolant 8, and silicone plugs 5. The open ends of multiple cooling pipes 9 are fixedly connected to the side of the mounting strip 3 with circular holes 11. Each cooling pipe 9 corresponds to a circular hole 11. Multiple cooling pipes 9 are inserted into corresponding mounting slots 7. The side of the mounting strip 3 connected to the cooling pipes 9 is in contact with the side of the saw blade body 1 away from the saw teeth 2. Each cooling pipe 9 is filled with coolant 8, and each circular hole 11 is inserted with a silicone plug 5. The cooling pipes 9 are used to hold coolant 8, and the coolant 8 is used to cool the saw teeth 2 and the saw blade body 1. The silicone plugs 5 are used to seal the circular holes 11 and facilitate the addition of coolant 8 from the circular holes 11.

[0024] Furthermore, one side of the saw tooth 2 is inclined with multiple heat dissipation holes 6 distributed equidistantly along a straight line, and the heat dissipation holes 6 extend to the mounting groove 7. The side of the saw tooth 2 away from the heat dissipation holes 6 is inclined with multiple heat dissipation holes 15 distributed equidistantly along a straight line, and the heat dissipation holes 15 extend to the mounting groove 7. The heat dissipation holes 15 and the heat dissipation holes 6 are distributed alternately, and one mounting groove 7 corresponds to one heat dissipation hole 15 or one heat dissipation hole 6. The heat dissipation holes 16 and 15 are used for heat dissipation, and they are used to accelerate the heat dissipation of the saw blade body 1 and the saw tooth 2. At the same time, they provide a flow channel for the hot air and coolant vapor formed after the heat exchange of the coolant 8 in the cooling pipe 9. The diameter and distribution position of the heat dissipation holes 15 and 16 do not affect the toughness of the saw blade body 1 and the saw tooth 2.

[0025] Furthermore, each cooling pipe 9 has a toothed groove 14 on its outer cylindrical surface, which is used to increase the heat exchange area of ​​the cooling pipe 9.

[0026] Furthermore, trapezoidal grooves 10 are provided on both sides of the mounting strip 3. The long side of the trapezoidal groove 10 is inside the mounting strip 3. The trapezoidal groove 10 is used to connect the mounting strip 3 and the rubber strip 4.

[0027] Furthermore, a plurality of trapezoidal protrusions 12 are fixedly connected to one side of the rubber strip 4, which are distributed at equal intervals along a straight line. The trapezoidal protrusions 12 correspond to the trapezoidal grooves 10. The trapezoidal protrusions 12 of the two rubber strips 4 are slidably engaged with the trapezoidal grooves 10 on both sides of the mounting strip 3. The trapezoidal protrusions 12 are used to slidably connect the mounting strip 3 and the rubber strip 4, and the mounting strip 3 and the rubber strip 4 are easy to disassemble.

[0028] Furthermore, multiple oil outlet holes 16 are provided on the side of the rubber strip 4 opposite to the serration 2, which are distributed equidistantly along a straight line. The oil outlet holes 16 are distributed alternately with the heat dissipation hole 1 6 or the heat dissipation hole 2 15. The oil outlet holes 16 are used to leak lubricating oil into the oil-absorbing cotton 13. When lubrication is required, press the rubber strip 4 or bend the serration 2 to make the rubber strip 4 bend and squeeze the oil-absorbing cotton 13.

[0029] Structural Description: Saw blade body 1: a long strip of thin steel plate with a flat surface. One side is the connecting surface for welding saw teeth 2, and the other side is the functional surface for opening the mounting groove 7. As the core load-bearing base of the saw blade, it provides bending toughness and fatigue strength, supports the saw teeth 2 for cutting and transmits tension, and at the same time provides the mounting base for the mounting groove 7, heat dissipation hole 1 6 and heat dissipation hole 2 15. Saw teeth 2: They are sharp teeth arranged at equal intervals. One side is welded to the saw blade body 1, and inclined heat dissipation holes 1-6 and 2-15 are opened on both sides respectively. They directly contact the workpiece to complete the cutting action. They rely on the high hardness of high-speed steel to ensure the cutting strength. At the same time, the heat dissipation holes 1-6 and 2-15 help to dissipate heat and avoid tempering and softening. Mounting strip 3: A long strip of plate that is adapted to the width of the saw blade body 1. One side is fixed with the cooling pipe 9, and the other side is attached to the side of the saw blade body 1 that is away from the saw teeth 2. Trapezoidal grooves 10 are opened on both sides to serve as the carrier of the liquid cooling heat dissipation structure. The cooling pipe 9 is fixed and the rubber strip 4 of the flexible lubrication structure is connected through the trapezoidal grooves 10 to realize the integrated installation of heat dissipation and lubrication components, and facilitate overall disassembly and maintenance. Rubber strip 4: A long strip of flexible rubber with a hollow interior. A trapezoidal protrusion 12 is fixed on one side, and an oil outlet hole 16 is opened on the side facing the sawtooth 2. It is wrapped with oil-absorbing cotton 13 and provides compression deformation capability. When pressed, the oil-absorbing cotton 13 can be squeezed to seep out lubricating oil. At the same time, it is detachably connected to the trapezoidal groove 10 of the mounting strip 3 through the trapezoidal protrusion 12, which makes it convenient to replenish lubricating material. Silicone plug 5: A cylindrical elastic silicone part with a smooth surface, which can be tightly inserted into the circular hole 11 to seal the circular hole 11 to prevent the coolant 8 in the cooling pipe 9 from leaking. At the same time, it can be easily pulled out to provide a channel for the cooling pipe 9 to replenish the coolant 8. Heat dissipation hole 6: A small circular hole that is inclined through the saw tooth 2 and is equidistantly distributed along the length of the saw tooth 2. One end leads to the cutting surface of the saw tooth 2 and the other end leads to the mounting groove 7. This accelerates the heat dissipation of the saw tooth 2 and provides an exhaust channel for the hot air and steam generated by the heat exchange of the cooling pipe 9, thus preventing heat from accumulating at the connection between the saw tooth 2 and the saw blade body 1. Mounting groove 7: A rectangular groove is formed on the side of the saw blade body 1 away from the saw teeth 2. It is evenly distributed along the length of the saw blade body 1 to accommodate the cooling pipes 9 and make the cooling pipes 9 fit tightly against the saw blade body 1 to ensure heat conduction efficiency. The groove width and depth are designed to avoid stress-sensitive areas and not affect the toughness of the saw blade body 1. Coolant 8: A liquid fluid that fills the cooling pipe 9. It absorbs the heat transferred between the saw blade body 1 and the saw teeth 2 through heat conduction, reduces the temperature of the saw teeth 2, prevents the saw teeth 2 from tempering and softening, and maintains its high strength. Cooling pipe 9: A cylindrical metal pipe with a toothed groove 14 on the outer cylindrical surface. One end is closed, and the other end is fixed to the mounting strip 3 and connected to the circular hole 11 to store coolant 8. The heat of the saw blade body 1 and the saw teeth 2 is transferred to the coolant 8 through the pipe wall. The toothed groove 14 on the outer cylindrical surface can increase the heat exchange area and improve the heat dissipation efficiency. Trapezoidal groove 10: Trapezoidal grooves are formed on both sides of the mounting strip 3 and are evenly distributed along the length of the mounting strip 3. They are adapted to the shape of the trapezoidal protrusion 12 and serve as a connection structure between the mounting strip 3 and the rubber strip 4. By sliding and engaging with the trapezoidal protrusion 12, the two can be detachably connected, which facilitates the maintenance of the lubrication components. Circular hole 11: A circular hole that passes through the mounting strip 3 and is equidistantly distributed along the length of the mounting strip 3. It corresponds one-to-one with the mounting groove 7 and the cooling pipe 9, providing a channel for replenishing the cooling pipe 9 with coolant 8, and providing an installation position for the silicone plug 5, thus realizing the dual functions of sealing and replenishing the cooling pipe 9. Trapezoidal protrusion 12: A trapezoidal protrusion fixed to one side of the rubber strip 4, equidistantly distributed along the length of the rubber strip 4, and slidably engaged with the trapezoidal groove 10 of the mounting strip 3, so as to realize the detachable connection between the rubber strip 4 and the mounting strip 3, which facilitates the disassembly and reinstallation of the rubber strip 4 and reduces the difficulty of maintenance. Oil-absorbing cotton 13: Porous sponge-like fiber cotton with high oil absorption and retention properties. It is filled inside the rubber strip 4 to store lubricating oil. It absorbs and retains lubricating oil through its own porous structure. When under pressure, it can seep out the lubricating oil to provide continuous lubrication for the saw teeth 2. Tooth groove 14: A strip-shaped groove opened on the outer cylindrical surface of the cooling pipe 9, evenly distributed along the length of the cooling pipe 9, increasing the contact area between the cooling pipe 9 and the inner wall of the mounting groove 7 and the coolant 8, improving the heat exchange efficiency, and accelerating the absorption of heat from the saw blade by the coolant 8. Heat dissipation hole 2 15: A small circular hole with the same structure as heat dissipation hole 1 6, opened on the side of the sawtooth 2 away from heat dissipation hole 1 6, evenly distributed along the length of the sawtooth 2, and arranged at intervals with heat dissipation hole 1 6. One end leads to the side of the sawtooth 2, and the other end passes through to the mounting groove 7, forming a two-way heat dissipation channel with heat dissipation hole 1 6, further accelerating the heat dissipation of the sawtooth 2, while balancing the air pressure in the mounting groove 7, and assisting the discharge of hot air and steam; Oil outlet hole 16: A small circular hole that runs through the rubber strip 4 towards the saw tooth 2. It is equidistantly distributed along the length of the rubber strip 4 and is arranged alternately with heat dissipation hole 16 or heat dissipation hole 25. It serves as a channel for lubricating oil to seep out, so that the lubricating oil that seeps out of the oil-absorbing cotton 13 under pressure can be accurately dripped onto the root of the saw tooth 2 and the cutting area to form a lubricating film and reduce cutting friction.

[0030] Working principle: During the initial cutting phase, the saw blade body 1 drives the welded and fixed saw teeth 2 to rotate at high speed. The saw teeth 2 contact the workpiece to generate cutting action. At this time, the friction and cutting stress between the saw teeth 2 and the workpiece will quickly generate a large amount of heat. If heat is not dissipated in time, the saw teeth 2 will easily soften due to tempering. The liquid cooling structure pre-installed in the mounting groove 7 activates the heat dissipation function. The cooling pipe 9 is attached to the inner wall of the mounting groove 7. The coolant 8 filled in the pipe absorbs the heat transferred between the saw blade body 1 and the mounting groove 7 through heat conduction. At the same time, the heat dissipation holes 1-6 and 2-15 on the saw teeth 2 form a heat dissipation mechanism. The two-way flow channel allows outside cold air to enter the mounting groove 7 through the heat dissipation holes, contacting the outer wall of the cooling pipe 9 to accelerate heat exchange and prevent heat accumulation at the connection between the saw teeth 2 and the saw blade body 1. Furthermore, the tooth grooves 14 on the outer cylindrical surface of the cooling pipe 9 increase the contact area with the coolant 8 and the inner wall of the mounting groove 7. During lubrication, the frictional resistance between the saw teeth 2 and the workpiece during cutting needs to be alleviated in real time through a flexible lubrication structure. If additional lubrication is required while the saw blade is running, the rubber strips 4 on both sides of the saw blade body 1 can be manually pressed. The rubber strips 4 are flexible and bend towards the saw blade body 1 after being pressed, compressing... The oil-absorbing cotton 13 inside the saw teeth 2 is filled with lubricating oil. When the lubricating oil inside the cotton 13 is squeezed, it seeps out through the oil outlet 16 on one side of the rubber strip 4 and drips precisely onto the root of the saw teeth 2 and the cutting area, forming a lubricating film. At the same time, the oil outlet 16 is distributed alternately with the heat dissipation hole 6 and the heat dissipation hole 15 to avoid the lubricating oil blocking the heat dissipation channel and to ensure that the heat dissipation and lubrication functions do not interfere with each other. When the coolant 8 decreases due to long-term use, the silicone plug 5 in the circular hole 11 can be pulled out and the coolant can be added to the cooling pipe 9 through the circular hole 11. After adding coolant, the silicone plug 5 can be tightened again. The seal is designed so that if the lubricating oil in the absorbent cotton 13 runs out, the rubber strip 4 can be slid along the trapezoidal groove 10 to separate the trapezoidal protrusion 12 from the trapezoidal groove 10. After removing the rubber strip 4, the absorbent cotton can be replaced or the lubricating oil can be replenished. There is no need to replace the entire saw blade, which reduces maintenance costs. Throughout the process, the width, depth and distribution of the mounting groove 7, as well as the hole diameter design of the first heat dissipation hole 6 and the second heat dissipation hole 15, all avoid the stress-sensitive areas of the saw blade body 1 and the saw teeth 2, ensuring that the functional structure does not affect the bending toughness and fatigue strength of the saw blade, and ultimately achieving long-term stable operation of the saw blade in high-intensity cutting scenarios.

[0031] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A high-strength and high-toughness bimetallic band saw blade, comprising a saw blade body (1) and saw teeth (2), wherein the saw teeth (2) are welded to one side of the saw blade body (1), characterized in that, Also includes: Multiple mounting grooves (7) are equidistantly distributed along a straight line on the side of the saw blade body (1) away from the saw teeth (2). The width, depth and distribution position of the mounting grooves (7) do not affect the toughness of the saw blade body (1) and the saw teeth (2). The liquid cooling heat dissipation structure is set in the mounting slot (7). The liquid cooling heat dissipation structure includes a mounting strip (3) and a liquid cooling pipe assembly. The mounting strip (3) is provided with multiple sets of liquid cooling pipe assemblies that are equidistantly distributed along a straight line. Each set of liquid cooling pipe assemblies is set in a corresponding mounting slot (7). Two sets of flexible lubrication structures are provided on both sides of the mounting strip (3), and the two sets of flexible lubrication structures are on both sides of the saw blade body (1); The flexible lubrication structure includes a rubber strip (4) and an oil-absorbing cotton (13). The rubber strip (4) is filled with oil-absorbing cotton (13), and the oil-absorbing cotton (13) is soaked in lubricating oil.

2. The high-strength and high-toughness bimetallic band saw blade according to claim 1, characterized in that, One side of the mounting strip (3) has a plurality of circular holes (11) that are equidistantly distributed along a straight line. The number and distribution of the circular holes (11) correspond to the mounting groove (7).

3. The high-strength and high-toughness bimetallic band saw blade according to claim 2, characterized in that, The liquid cooling pipe assembly includes cooling pipes (9), coolant (8) and silicone plugs (5). The open ends of multiple cooling pipes (9) are fixedly connected to the side of the mounting strip (3) with a circular hole (11). Each cooling pipe (9) corresponds to a circular hole (11). Multiple cooling pipes (9) are inserted into the corresponding mounting grooves (7). The side of the mounting strip (3) connected to the cooling pipes (9) is in contact with the side of the saw blade body (1) away from the saw teeth (2). Coolant (8) is filled in each cooling pipe (9), and silicone plugs (5) are inserted into each circular hole (11).

4. The high-strength and high-toughness bimetallic band saw blade according to claim 1, characterized in that, The sawtooth (2) has multiple heat dissipation holes (6) that are equidistantly distributed along a straight line on one side. The heat dissipation holes (6) extend into the mounting groove (7). The sawtooth (2) has multiple heat dissipation holes (15) that are equidistantly distributed along a straight line on the side away from the heat dissipation holes (6). The heat dissipation holes (15) extend into the mounting groove (7). The heat dissipation holes (15) are spaced apart from the heat dissipation holes (6), and one mounting groove (7) corresponds to one heat dissipation hole (15) or one heat dissipation hole (6).

5. A high-strength and high-toughness bimetallic band saw blade according to claim 3, characterized in that, Each of the cooling pipes (9) has a toothed groove (14) on its outer cylindrical surface.

6. A high-strength and high-toughness bimetallic band saw blade according to claim 1, characterized in that, The mounting strip (3) has trapezoidal grooves (10) on both sides, with the long side of the trapezoidal groove (10) inside the mounting strip (3).

7. A high-strength and high-toughness bimetallic band saw blade according to claim 6, characterized in that, A plurality of trapezoidal protrusions (12) are fixedly connected to one side of the rubber strip (4) and are distributed at equal intervals along a straight line. The trapezoidal protrusions (12) correspond to the trapezoidal grooves (10). The trapezoidal protrusions (12) of the two rubber strips (4) are slidably engaged with the trapezoidal grooves (10) on both sides of the mounting strip (3).

8. A high-strength and high-toughness bimetallic band saw blade according to claim 4, characterized in that, The rubber strip (4) and the serration (2) are provided with multiple oil outlet holes (16) that are equidistantly distributed along a straight line on the side opposite to each other. The oil outlet holes (16) are distributed at intervals with the heat dissipation hole one (6) or the heat dissipation hole two (15).

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