Welding saw blade produced by hot pressing sintering furnace

Abstract

The utility model provides a welding saw blade produced by a hot pressing sintering furnace, which relates to the technical field of welding saw blades and comprises a saw blade body, a positioning hole is arranged in the saw blade body, a heat conduction drainage channel is arranged in the saw blade body, a welding tool bit is arranged on the outer side of the saw blade body, a groove is arranged on one side of the welding tool bit, and a positioning groove is arranged at the bottom of the groove. A micro-convex pressure guide point is arranged in the positioning groove, and an alloy tool bit is arranged at the top of the micro-convex pressure guide point, so that when the equipment is used, the micro-convex pressure guide point provides initial point contact, the flatness and the central position of the bottom surface of the tool bit can be automatically calibrated, and the micro-convex pressure guide point can form point pressure into surface pressure during heating and pressurizing, so that the welding pressure is uniformly diffused; the contact compactness of the tool bit and the body is improved, displacement of the tool bit is limited by the positioning groove, thermal stress concentration during sintering is reduced, local loosening or pseudo soldering is prevented, and therefore the strength and impact resistance of a welding seam can be improved through structural close fit.

Description

Technical Field

[0001] This utility model relates to the field of welding saw blade technology, and in particular to a hot pressing sintering furnace for producing welding saw blades. Background Technology

[0002] A precision cutting saw disclosed in Chinese Patent No. CN217144233U includes a saw blade base with mounting holes and a tungsten carbide cutter head. The outer circumferential edge of the saw blade base is provided with saw teeth, and chip grooves are provided between adjacent saw teeth. A tungsten carbide cutter head is welded to the saw blade base tooth seat facing the cutting direction. The cutting surface of the tungsten carbide cutter head faces the cutting direction, and the cutting edge of the tungsten carbide cutter head is obliquely shaped with one end higher than the other. Three adjacent tungsten carbide cutters are grouped together. The interval angle between two adjacent tungsten carbide cutters in the circumferential direction of the saw blade base is α and β respectively in a clockwise direction. The interval angle between two adjacent groups in the circumferential direction of the saw blade base is γ. A heat dissipation groove is provided on the saw blade base. This invention achieves a cutting effect by using a saw blade base with sufficient strength and a long-life tungsten carbide cutter head, wherein the oblique shape of the tungsten carbide cutter head facilitates cutting; and the heat dissipation groove facilitates heat dissipation from the cutting edge, making the saw blade cut more easily. It not only ensures precision and smoothness, but also increases the cutting life of the saw blade and improves production efficiency.

[0003] The aforementioned prior art and related documents have the following technical problems:

[0004] 1. Traditional welding of the cutting head is prone to center offset and insufficient flatness of the bottom surface due to inaccurate positioning, resulting in poor contact between the cutting head and the body after welding, which affects the cutting accuracy and stability. Utility Model Content

[0005] The purpose of this utility model is to address the shortcomings of existing technologies by proposing a hot-press sintering furnace for producing welded saw blades.

[0006] To achieve the above objectives, the present invention adopts the following technical solution: a hot-press sintering furnace for producing welded saw blades, comprising a saw blade body, wherein the saw blade body has a positioning hole inside, a heat conduction channel inside, and a welding head on the outside of the saw blade body.

[0007] Preferably, the saw blade body has eight annular holes inside, and the annular holes are arranged in a circumferential array.

[0008] Preferably, the welding cutter head has a groove on one side, and the groove is arranged in a circular pattern and is cut.

[0009] Preferably, the bottom of the groove is provided with a positioning groove, and the inside of the positioning groove is rounded.

[0010] Preferably, the top of the positioning groove is provided with a micro-convex pressure guide point, and the bottom of the micro-convex pressure guide point is positioned to connect with the top of the positioning groove.

[0011] Preferably, the top of the micro-convex pressure point is provided with an alloy cutting head, and the bottom of the alloy cutting head is positioned and connected to the bottom of the alloy cutting head.

[0012] Preferably, heat dissipation grooves are provided on both outer sides of the saw blade body, and the heat dissipation grooves are removed by scanning.

[0013] Beneficial effects

[0014] In this invention, a groove is provided on one side of the welding cutter head, and a positioning groove is provided at the bottom of the groove. The positioning groove has micro-convex pressure points inside, and an alloy cutter head is provided on the top of the micro-convex pressure points. In this way, when using the equipment, the micro-convex pressure points provide initial point contact, which can automatically calibrate the flatness and center position of the bottom surface of the cutter head. The micro-convex pressure points can form point pressure into surface pressure during heating and pressurization, so that the welding pressure is evenly diffused and the contact density between the cutter head and the body is improved. The positioning groove restricts the displacement of the cutter head, which helps to reduce the concentration of thermal stress during sintering and prevent local loosening or incomplete welding. In this way, the strength and impact resistance of the weld can be improved through a tight fit of the structure. At the same time, when the blank is initially heated, the micro-convex pressure points first transfer heat to the bottom of the cutter head, which helps to quickly heat up and form a fusion interface. Furthermore, the micro-convex pressure points facilitate the discharge of sintering gases and the uniform distribution of heat flow, thereby improving the density and stability of the sintered product.

[0015] In this invention, an annular hole is provided on one side of the saw blade body. This helps to quickly discharge welding gases, evaporation products, or excess flux volatiles, preventing gas retention that could lead to incomplete welding. This improves the density of the welding interface, enhances welding strength and overall quality. The through hole can accelerate the conduction speed of heat energy between the central area and the edge during sintering, reducing heat concentration and preventing local overheating or ablation in the center of the saw blade. This also helps maintain the overall balanced stress distribution of the saw blade and reduces thermal deformation. Attached Figure Description

[0016] Figure 1 This is an isometric view of the present invention;

[0017] Figure 2 This is a top view of the present invention;

[0018] Figure 3 For the present utility model Figure 2 Sectional view of AA;

[0019] Figure 4 This is a front view of the present invention.

[0020] Legend:

[0021] 1. Saw blade body; 2. Annular hole; 3. Positioning hole; 4. Heat dissipation groove; 5. Alloy blade tip; 6. Micro-convex pressure guide point; 7. Welded blade tip; 8. Heat conduction channel; 9. Positioning groove; 10. Groove. Detailed Implementation

[0022] To make the technical means, creative features, and achieved objectives and effects of this utility model easier to understand, the present utility model is further described below with reference to specific embodiments and accompanying drawings. However, the following embodiments are merely preferred embodiments of this utility model and not all of them. Other embodiments obtained by those skilled in the art based on the embodiments described in the implementation plan without creative effort are all within the protection scope of this utility model.

[0023] The specific embodiments of this utility model are described below with reference to the accompanying drawings. Specific Implementation Example 1:

[0025] Reference Figure 1-4 A hot-press sintering furnace is used to produce welded saw blades, including a saw blade body 1. The saw blade body 1 has a positioning hole 3 inside, a heat conduction channel 8 inside, and eight annular holes 2 inside, arranged in a circumferential array. A groove 10 is provided on one side of the welding cutter head 7, arranged in a circumferential array. The groove 10 is cut. A positioning groove 9 is provided at the bottom of the groove 10, with rounded corners inside. A micro-convex pressure point 6 is provided at the top of the positioning groove 9, with the bottom of the micro-convex pressure point 6 connected to the top of the positioning groove 9. An alloy cutter head 5 is provided at the top of the micro-convex pressure point 6, with the bottom of the alloy cutter head 5 connected to the bottom of the alloy cutter head 5. Heat dissipation grooves 4 are provided on both sides of the outside of the saw blade body 1, and the heat dissipation grooves 4 are cut by scanning. The welding cutter head 7 is provided on the outside of the saw blade body 1.

[0026] A groove 10 is provided on one side of the welding cutter head 7, and a positioning groove 9 is provided at the bottom of the groove 10. A micro-convex pressure guide point 6 is provided inside the positioning groove 9, and an alloy cutter head 5 is provided on top of the micro-convex pressure guide point 6. This design allows the micro-convex pressure guide point 6 to provide initial point contact during use, automatically calibrating the flatness and center position of the cutter head's bottom surface. The micro-convex pressure guide point 6 can form point pressure into surface pressure during heating and pressurization, ensuring uniform diffusion of welding pressure and improving the contact density between the cutter head and the body. The positioning groove 9 restricts cutter head displacement, helping to reduce thermal stress concentration during sintering and preventing localized loosening or incomplete welding. This tight structural fit enhances the strength and impact resistance of the weld. Simultaneously, the micro-convex pressure guide point 6... During the initial heating of the compact, heat is first transferred to the bottom of the blade head, which helps to quickly raise the temperature and form a fusion interface. The micro-convex pressure point 6 facilitates the discharge of sintering gases and the uniform distribution of heat flow, thereby improving the density and stability of the sintered product. An annular hole 2 is provided on one side of the saw blade body 1, which helps to quickly discharge welding gases, evaporates or excess flux volatiles, and prevents gas retention that could lead to incomplete welding. This can improve the density of the welding interface, enhance the welding strength and overall quality. The through hole can accelerate the conduction speed of heat energy between the central area and the edge during sintering, reduce heat concentration, prevent local overheating or ablation in the center of the saw blade, and help maintain the overall balanced stress distribution of the saw blade, reducing thermal deformation. Specific Implementation Example 2:

[0028] Reference Figure 1-4 The existing annular hole 2 is not limited to a circle. Based on the basic structure in Specific Embodiment 1, a further technical solution is adopted to enhance local air disturbance, form micro eddies to improve heat dissipation efficiency, and also help reduce the temperature rise of the welding part of the cutter head, preventing problems such as bluing and hardness reduction.

[0029] A "micro-vortex" is formed between the surface and interior of the saw blade, which greatly improves heat dissipation efficiency.

[0030] In summary:

[0031] 1. A groove 10 is provided on one side of the welding cutter head 7, and a positioning groove 9 is provided at the bottom of the groove 10. The positioning groove 9 has micro-convex pressure points 6 inside, and an alloy cutter head 5 is provided on the top of the micro-convex pressure points 6. This means that when using the equipment, the micro-convex pressure points 6 provide initial point contact, which can automatically calibrate the flatness and center position of the bottom surface of the cutter head. The micro-convex pressure points 6 can form point pressure to surface pressure during heating and pressurization, so that the welding pressure is evenly diffused and the contact density between the cutter head and the body is improved. The positioning groove 9 restricts the displacement of the cutter head, which helps to reduce the concentration of thermal stress during sintering and prevent local loosening or incomplete welding. In this way, the strength and impact resistance of the weld can be improved through a tight fit of the structure. At the same time, when the blank is initially heated, the micro-convex pressure points 6 first transfer heat to the bottom of the cutter head, which helps to quickly heat up and form a fusion interface. The micro-convex pressure points 6 also facilitate the discharge of sintering gas and the uniform distribution of heat flow, thereby improving the density and stability of the sintered product.

[0032] 2. An annular hole 2 is provided on one side of the saw blade body 1. This helps to quickly discharge welding gases, evaporation products or excess flux volatiles, and prevent gas retention that could lead to incomplete welding. This can improve the density of the welding interface, enhance welding strength and overall quality. The through hole can accelerate the conduction speed of heat energy between the central area and the edge during sintering, reduce heat concentration, prevent local overheating or ablation in the center of the saw blade, and help maintain the overall balanced stress distribution of the saw blade and reduce thermal deformation.

[0033] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0034] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely preferred examples and are not intended to limit the utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A hot-pressing sintering furnace for producing welded saw blades, comprising a saw blade body (1), characterized in that: The saw blade body (1) has a positioning hole (3) inside, a heat conduction channel (8) inside, and a welding head (7) on the outside.

2. The hot-pressing sintering furnace for producing welded saw blades according to claim 1, characterized in that: The saw blade body (1) has eight annular holes (2) inside, and the annular holes (2) are arranged in a circumferential array.

3. The hot-pressing sintering furnace for producing welded saw blades according to claim 1, characterized in that: The welding cutter head (7) has a groove (10) on one side, and the groove (10) is arranged in a circular pattern and is cut.

4. The hot-pressing sintering furnace for producing welded saw blades according to claim 3, characterized in that: The bottom of the groove (10) is provided with a positioning groove (9), and the inside of the positioning groove (9) is rounded.

5. The hot-pressing sintering furnace for producing welded saw blades according to claim 4, characterized in that: The top of the positioning groove (9) is provided with a micro-convex pressure guide point (6), and the bottom of the micro-convex pressure guide point (6) is connected to the top of the positioning groove (9) by positioning.

6. The hot-pressing sintering furnace for producing welded saw blades according to claim 5, characterized in that: The top of the micro-convex pressure point (6) is provided with an alloy cutter head (5), and the bottom of the alloy cutter head (5) is positioned and connected to the bottom of the alloy cutter head (5).

7. The hot-pressing sintering furnace for producing welded saw blades according to claim 1, characterized in that: The saw blade body (1) has heat dissipation grooves (4) on both sides of its exterior, and the heat dissipation grooves (4) are cut off by scanning.

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