An ultrathin precision section

Abstract

The application discloses an ultrathin precision cutting piece, wherein a KZ alloy powder is used as a body powder, and a certain proportion of Cu, Sn and Ni is used to form the body powder; a certain fine-grit diamond is combined; a specially designed cutter head tooth shape structure and a base body shape structure are used; the self-sharpening property of the cutter head is better; the cutter head is easier to be sharpened; the cutting edge quality, sharpness and hand feeling of the precision cutting piece produced by the cutter head are better than those of existing precision cutting products; the whole manufacturing waste rate and the rework rate are lower than those of the existing precision cutting products; the cutting efficiency is improved; and the service life is long.

Description

[0001] The present patent application is a divisional application of Chinese Patent Application No. 202410437023.2, the original application number of which is 202410437023.2, the filing date of which is April 12, 2024, and the invention name of which is a kind of ultra-thin precision section of tire body powder, ultra-thin precision section material and ultra-thin precision section. TECHNICAL FIELD

[0002] The present application relates to the field of diamond tool preparation, in particular to an ultra-thin precision section. BACKGROUND

[0003] At present, diamond sections have been widely used in the cutting and processing of hard and brittle non-metallic materials such as marble, concrete, granite, ceramic, glass, etc. in the market; the precision section is a kind of diamond saw blade, mainly composed of diamond tool bit and matrix; in the use process, the diamond tool bit is mainly used for cutting materials, and the matrix is mainly used for supporting the diamond tool bit for cutting work; the diamond saw blade can process many objects, and the precision section is mainly used for processing some materials with high requirements for cutting edge quality, such as artificial stone, marble, ceramic tile, etc. However, the existing precision section has the following shortcomings:

[0004] 1. The existing ordinary formula tire body powder has weak holding force on diamond, poor self-sharpening of precision section, and the precision section is not easy to sharpen, the sharpness of the precision section is not enough, which leads to poor cutting edge quality and low cutting efficiency; and during cutting, cracks and edge collapse are prone to occur, and the service life is short;

[0005] 2. The existing precision section tire body powder has too large internal stress when sintering the tool bit, which is prone to crack, has low cold pressure forming property, and has high scrap rate; and the tool bit is prone to fire, burn and crack during dry cutting, and the cutting effect is not good;

[0006] 3. The existing precision section has internal stress release when sintering the tool bit, and the matrix is prone to deformation; and the strength of the fine teeth on the existing precision section is not high, the tool bit is not well formed by cold pressure, and cracks are prone to occur, resulting in poor product quality;

[0007] 4. In order to ensure the quality and cutting efficiency of the section, the tool bit needs to be made into an ultra-thin structure; when using diamond particles with a relatively coarse particle size on the tool bit, not only the tool bit cannot be made into an ultra-thin structure, but also the diamond particles have weak holding force, which is prone to edge collapse when cutting ceramic tiles, and the sharpness is not good; however, if the particle size of the diamond particles is too fine, the tool bit is not easy to sharpen, and the sharpness is not good;

[0008] 5. Since the base of existing precision saws is generally an ultra-thin structure, it is relatively weak and easily deformed, resulting in a short service life of the precision saw. Once the precision saw is damaged, the entire saw blade will be discarded, resulting in a waste of materials and an increase in the cost of use. Therefore, flanges are welded on both sides of the base on the existing precision saw to enhance the structural strength of the base so that the base will not deform or shake when the precision saw is cut quickly. However, during the flange welding process, the base is easily deformed, the welding work is difficult, and the structural strength of the base is reduced, resulting in a poor feel when using the precision saw.

[0009] In view of this, the present inventors have made in-depth research and actively conducted improvements and trials to develop and design the present invention in order to address the numerous deficiencies and inconveniences caused by the imperfect design of the above-mentioned fine-slice structure. Summary of the Invention

[0010] The object of the present invention is to provide an ultra-thin fine slice, wherein the fine slice cutter head made of the matrix powder and diamond has better self-sharpening property, is easier to cut, can take into account both cutting edge quality and high sharpness, improves cutting efficiency and service life; and improves the cold pressing formability of the fine slice, with a high yield.

[0011] In order to achieve the above object, the solution of the present invention is:

[0012] A matrix powder for ultra-thin fine slices, wherein the components and weight percentages of the matrix powder are as follows: KZ alloy powder 20%-40%, Cu 25%-35%, Sn 7%-12%, Ni 6%-15%, and Fe as the balance;

[0013] The components and weight percentages of the KZ alloy powder are as follows: Fe 60%-65%, Cu 15-18%, Co 10-15%, Sn 5-7%, P 1-2%, and a trace amount of Si.

[0014] The KZ alloy powder has a bending strength of 1100-1300 MPa, a powder particle size of 300 mesh or finer, an oxygen content of ≤3000 ppm, and is spherical.

[0015] The components and weight percentages of the matrix powder are as follows: KZ alloy powder 40%, Cu35%, Sn12%, Ni6%, and Fe balance; or, the components and weight percentages of the matrix powder are as follows: KZ alloy powder 30%, Cu35%, Sn12%, Ni6%, and Fe balance; or, the components and weight percentages of the matrix powder are as follows: KZ alloy powder 20%, Cu35%, Sn12%, Ni6%, and Fe balance.

[0016] An ultra-thin fine section material, wherein the components and volume concentration percentages of the fine section material are as follows: diamond concentration is 8-15%; the balance is matrix powder; and the diamond particle size is 60-80 meshes.

[0017] An ultra-thin fine slice comprises a base body and a fine slice cutter head which is sintered and fixed on the outer circumference of the base body and is in an annular shape. The fine slice cutter head is made of the fine slice material.

[0018] The upper and lower side surfaces of the fine slicing cutter head are respectively provided with a plurality of turbine-distributed fine teeth, and the fine teeth on the upper and lower side surfaces of the fine slicing cutter head are staggered and connected to form an integral structure; the interval between two adjacent fine teeth on the same side forms a groove, and two reinforcing ribs connecting the two adjacent fine teeth are provided in the groove; the reinforcing ribs in two adjacent grooves on the fine slicing cutter head are staggered.

[0019] The reinforcing ribs in two adjacent grooves on the same side are staggered.

[0020] The six reinforcing ribs in three connected grooves on the same side are grouped together. The six reinforcing ribs in the same group are staggered and arranged from the inside to the outside. The multiple groups of reinforcing ribs on the same side are distributed in a turbine pattern.

[0021] The fine slicing cutter head forms an annular groove wrapped around the outer circumference of the base on the inner ring close to the outer circumference of the base, and reinforcement parts formed on both sides of the annular groove are respectively provided in the grooves on the upper and lower sides.

[0022] The fine teeth and reinforcing ribs on the same side are respectively distributed in a clockwise direction.

[0023] The fine teeth and the reinforcing ribs are an integrally formed structure.

[0024] The fine teeth are arranged to gradually expand from an end close to the base body to an end away from the base body.

[0025] Flanges are welded to the two side surfaces of the base respectively, and four long strip holes are provided on the circumference of the base penetrating the upper and lower side surfaces, and the length direction of the long strip holes is in the diameter direction of the base; the outer circumference of the flange has a welding portion welded to the side surface of the base and four vacant portions spanning the long strip holes and not welded to the base.

[0026] The base body is provided with a plurality of circular holes on its circumference near the fine slicing cutter head.

[0027] There are eight circular holes, and each of the long strip holes is symmetrically provided with a circular hole on both sides.

[0028] The diameter of the circular ring where the outer end of the elongated hole is located is smaller than the diameter of the circular ring where the inner end of the circular hole is located.

[0029] After adopting the above structure, the tire body powder of the ultra-thin precision section, the ultra-thin precision section material and the ultra-thin precision section have the following advantages:

[0030] 1. The tire body powder of the present application is made of KZ alloy powder matched with a certain proportion of Cu, Sn and Ni, combined with a certain fine particle size of diamond, and cooperated with a specially designed cutter head tooth shape structure and a base shape structure, so that the edge quality, sharpness and hand feeling of the precision section produced are better than those of the existing precision cutting products, and the whole manufacturing scrap rate and rework rate are lower than those of the existing precision cutting products.

[0031] 2. The KZ alloy powder of the present application is a water atomized pre-alloy powder, and its main components are Fe 60%-65%, Cu 15-18%, Co 10-15%, Sn 5-7%, P 1-2%, Si trace, the powder bending strength is 1100-1300 MPa, the particle size is 300 mesh or finer, the oxygen content is lower ≦3000 ppm, and the powder is spherical; the addition of P in the KZ alloy powder enhances the holding force of the tire body powder on the diamond, which is beneficial to the cutting edge height of the diamond and improves the sharpness of the precision section; in addition, P enriches in the grain boundary, which makes the metal brittle and reduces the wear resistance, improves the self-sharpening property of the diamond precision section, and is beneficial to improve the cutting efficiency.

[0032] 3. The KZ alloy powder of the present application adds P and Si to improve the brittleness of the tire body powder, so that the precision section has better self-sharpening property when cutting hard ceramic tiles and artificial stone, and the cutter head is easier to cut, and the present application uses 20%-40% KZ alloy powder to ensure the self-sharpening property of the tire body powder and the cold pressure forming property of the precision section.

[0033] 4. The matrix powder of the present invention also includes Cu25%-35%, Sn7%-12%, and Ni6%-15%. Among them, the Cu powder is dendritic, which is conducive to the mutual bite between the powder particles and improves the cold pressing formability of the matrix powder; in addition, Cu and Ni are infinitely soluble in each other, and Ni can play a role in solid solution strengthening; as an effective surfactant, adding a small amount of Ni can improve the wettability of Cu to diamond, promote the densification process of the sintered matrix powder, and strengthen the mechanical encapsulation strength of the matrix to the diamond, thereby improving the sharpness and service life of the fine slice; in addition, Ni has high temperature impact resistance, which makes the fine cut The blade has high impact resistance during dry cutting, reducing the occurrence of burnt blades and cracks during cutting. Moreover, the addition of a certain amount of Sn powder reduces the sintering temperature of the matrix powder. Sn has a low surface tension and a certain solubility in many metals, thus making the entire matrix powder have a relatively uniform structure. In addition, Sn forms a liquid at low temperatures of 280-500℃, shuttles through the entire matrix powder, and induces the entire matrix powder to partially dissolve to form a uniform molten plastic body, so that it can firmly clamp the diamond under high temperature and high pressure, enhancing the holding force of the diamond. In addition, Sn powder is relatively brittle, which is conducive to the cutting of the matrix.

[0034] 5. The diamond particle size used in the ultra-thin fine slices of the present invention is 60-80 mesh, and the volume concentration percentage is 8%-15%. The cutting edge quality, sharpness and feel of the fine slices produced by the present invention are superior to those of existing fine-cut products. However, if the diamond is too coarse, it is easy to break the edge, and if it is too fine, it is not easy to cut the blade. Finally, the particle size of 60-80 mesh is more suitable.

[0035] 6. The ultra-thin fine slicing cutter head of the present invention is provided with two reinforcing ribs between two adjacent fine teeth. The reinforcing ribs located in two adjacent grooves on the fine slicing cutter head are staggered. The reinforcing ribs at different positions cause the fine teeth distributed in the turbine to be squeezed and pulled against each other, thereby enhancing the strength between the fine teeth and improving the cold press formability, avoiding the occurrence of sintering cracks, and reducing the risk of cracks occurring in the fine slicing cutter head during the cutting process.

[0036] 7. The base of the present invention is provided with four elongated holes penetrating the upper and lower side surfaces on its circumference. The outer circumference of the flange has a welding portion welded to the side surface of the base and four vacant portions spanning the elongated holes and not welded to the base. During the flange welding process, the vacant portions of the flange spanning the elongated holes are not welded to the base. The elongated holes and the vacant portions provide deformation clearance space, which can release internal stress, thereby solving the problem of easy deformation of the flange when welded to the base, increasing the structural strength of the base, extending the service life of the precision cut piece, and improving the feel of the precision cut piece.

[0037] 8. The substrate of the present invention also has multiple circular holes evenly distributed near the fine slicing cutter head. These long strip holes and circular holes of different shapes solve the problem of deformation of the substrate after sintering due to the inability to release internal stress. BRIEF DESCRIPTION OF THE DRAWINGS

[0038] Figure 1 It is a front view schematic diagram of the refined section of the present invention;

[0039] Figure 2 for Figure 1 A partial enlarged view of the

[0040] Figure 3 This is an enlarged view of the local structure of the ultra-thin fine section of the present invention;

[0041] Figure 4 for Figure 3 The enlarged cross-sectional view at AA in the middle;

[0042] Figure 5 for Figure 3 Enlarged cross-sectional view of the middle BB.

[0043] Explanation of symbols

[0044] Base 1; fine slicing blade 2; fine teeth 21; groove 22; reinforcing rib 23; annular groove 24; reinforcement portion 25; flange 11; elongated hole 12; welding portion 111; vacant portion 112; circular hole 13. DETAILED DESCRIPTION

[0045] In order to further explain the technical solution of the present invention, the present invention is described in detail below through basic embodiments.

[0046] The present invention discloses a matrix powder for ultra-thin fine slices, wherein the components and weight percentages of the matrix powder are as follows: KZ alloy powder 20%-40%, Cu 25%-35%, Sn 7%-12%, Ni 6%-15%, and Fe as the balance;

[0047] The components and weight percentages of the KZ alloy powder are as follows: Fe 60%-65%, Cu 15-18%, Co 10-15%, Sn 5-7%, P 1-2%, and a trace amount of Si.

[0048] The KZ alloy powder has a bending strength of 1100-1300 MPa, a powder particle size of 300 mesh or finer, an oxygen content of ≤3000 ppm, and is spherical.

[0049] The components and weight percentage of the matrix powder are as follows: KZ alloy powder 40%, Cu 35%, Sn 12%, Ni 6%, and Fe balance; or, the components and weight percentage of the matrix powder are as follows: KZ alloy powder 30%, Cu 35%, Sn 12%, Ni 6%, and Fe balance; or, the components and weight percentage of the matrix powder are as follows: KZ alloy powder 20%, Cu 35%, Sn 12%, Ni 6%, and Fe balance.

[0050] The matrix powder for ultra-thin precision cutting slice has the following advantages:

[0051] 1. The KZ alloy powder in the matrix powder is a water-atomized pre-alloy powder, and the main components are Fe 60%-65%, Cu 15-18%, Co 10-15%, Sn 5-7%, P 1-2%, Si trace amount, the powder bending strength is 1100-1300 MPa, the particle size is 300 mesh or finer, the oxygen content is lower ≦3000 ppm, and the powder is spherical; the addition of P in the KZ alloy powder enhances the holding force of the matrix powder on the diamond, is beneficial to the cutting height of the diamond, and improves the sharpness of the precision cutting slice; in addition, P is enriched at the grain boundary, which makes the metal brittle, reduces the wear resistance, improves the self-sharpening of the diamond precision cutting slice, and is beneficial to improving the cutting efficiency;

[0052] 2. The KZ alloy powder of the present application improves the brittleness of the matrix powder by adding P and Si, so that the precision cutting slice has better self-sharpening when cutting hard ceramic tiles and artificial stone, and the cutter head is easier to cut; the present application uses 20%-40% KZ alloy powder, which ensures the self-sharpening of the matrix powder and the cold pressure formability of the precision cutting slice; if the proportion of KZ alloy powder is too high, the precision cutting slice is difficult to form by cold pressure, and the internal stress of the matrix powder is too large during sintering, which is easy to crack, so 20%-40% KZ alloy powder is selected;

[0053] 3、The tire body powder of the present application also comprises Cu 25%-35%, Sn 7%-12%, and Ni 6%-15%, wherein the Cu powder is dendritic, which is beneficial to the mutual engagement between powder particles, and improves the cold-pressing formability of the tire body powder; in addition, Cu and Ni can be infinitely soluble, and Ni can play a solid solution strengthening role; as an effective surface active substance, the addition of a small amount of Ni can improve the wettability of Cu to diamond, promote the densification process of sintered tire body powder, and strengthen the mechanical embedding strength of the matrix to diamond, thereby being beneficial to improving the sharpness and service life of the precision cutting piece; in addition, Ni has high-temperature impact resistance, so that the precision cutting piece can have high impact resistance during dry cutting, reducing the phenomenon of burning the cutting head and cracks during cutting; moreover, the addition of a certain amount of Sn powder reduces the sintering temperature of the tire body powder, and Sn has a small surface tension and a certain solubility to many metals, so that the entire tire body powder has a relatively uniform organizational structure; in addition, Sn forms a liquid state at a low temperature of 280-500 DEG C, shuttles in the entire tire body powder, induces partial dissolution of the entire tire body powder to form a uniform molten plastic body, so that it forms a firm clamping to diamond at high temperature and high pressure, and enhances the holding force to diamond, and Sn powder is relatively brittle, which is beneficial to the blade of the tire body; however, excessive Sn will affect the service life of the precision cutting piece, and such products belong to the ultra-thin type, and too brittle tire body has safety hazards, so through various tests and repeated comparisons, the present application finally selects this tire body formula, which achieves good results.

[0054] The present application also discloses an ultra-thin precision cutting piece material, and the components and volume concentration percentages of the precision cutting piece material are as follows: diamond concentration 8-15%; the balance is the tire body powder; and the particle size of the diamond is 60-80 mesh.

[0055] The tire body powder of the present application is made of KZ alloy powder in combination with Cu, Sn and Ni in a certain proportion, in combination with diamond of a certain fine particle size, and in combination with a special designed tool bit tooth structure and matrix shape structure, so that the precision cutting piece produced has better cutting edge quality, sharpness and hand feeling than existing precision cutting products, and has lower manufacturing waste rate and rework rate than existing precision cutting products; the diamond of the ultra-thin precision cutting piece has a particle size of 60-80 mesh and a volume concentration percentage of 8%-15%; too coarse diamond is easy to collapse, and too fine diamond is not easy to cut, so the particle size of 60-80 mesh is finally selected; less than 8%, the service life of the precision cutting piece is too short, and more than 15%, the sharpness of the precision cutting piece is difficult to improve, so this combination is finally selected through repeated comparison tests.

[0056] Example 1

[0057] The diamond concentration is 8%, and the balance is the tire body powder;

[0058] The components and weight percentage of the matrix powder are as follows: KZ alloy powder 40%, Cu 35%, Sn 12%, Ni 6%, and Fe balance;

[0059] In this embodiment, the KZ content is relatively high, the powder flowability is good, the bulk specific density is relatively large, and most of the powder is in spherical shape.

[0060] Example Two

[0061] The diamond concentration is 8%, and the balance is the matrix powder;

[0062] The components and weight percentage of the matrix powder are as follows: KZ alloy powder 40%, Cu 35%, Sn 12%, Ni 6%, and Fe balance;

[0063] In this embodiment, the diamond and the matrix powder are well matched as a whole, the cold-press forming effect is good, the cutting is smooth, the hand feeling is relatively light, and the sharpness is very good.

[0064] Example Three

[0065] The diamond concentration is 8%, and the balance is the matrix powder;

[0066] The components and weight percentage of the matrix powder are as follows: KZ alloy powder 40%, Cu 35%, Sn 12%, Ni 6%, and Fe balance.

[0067] In this embodiment, the matrix powder and the diamond have very good cold-press forming property.

[0068] Please refer to Figures 1 to 5 The present application also discloses an ultrathin precision cutting piece, which comprises a base 1 and a precision cutting piece cutter head 2 sintered and fixed on the outer circumferential circle of the base 1 and in a circular ring shape, wherein the precision cutting piece cutter head 2 is made of the precision cutting piece material.

[0069] The matrix powder of the ultrathin precision cutting piece is made of KZ alloy powder matched with a certain proportion of Cu, Sn and Ni, combined with a certain fine-grained diamond, and cooperated with a specially designed cutter head tooth structure and base shape structure, so that the cutting edge quality, sharpness and hand feeling of the precision cutting piece produced are better than those of the existing precision cutting piece products, and the whole manufacturing waste rate and rework rate are lower than those of the existing precision cutting piece products.

[0070] The upper and lower sides of the fine slicing cutter head 2 are respectively provided with a plurality of turbine-distributed fine teeth 21, the fine teeth 21 on the upper and lower sides of the fine slicing cutter head 2 are connected in an integral structure by being staggered with each other, the interval between the adjacent two fine teeth 21 on the same side forms a groove 22, and two reinforcing ribs 23 connecting the adjacent two fine teeth 21 are arranged in the groove 22, the reinforcing ribs 23 in the adjacent two grooves 22 on the fine slicing cutter head 2 are arranged in a staggered manner, the turbine-distributed fine teeth 21 and the fine teeth 21 are formed in mutual extrusion and traction through the reinforcing ribs 23 at different positions, the strength between the fine teeth 21 and the fine teeth 21 is enhanced, and therefore the cold pressure formability is improved, the sintering crack phenomenon is avoided, and the risk of cracks of the fine slicing cutter head 2 in the cutting process is reduced.

[0071] The reinforcing ribs 23 in the adjacent two grooves 22 on the same side are arranged in a staggered manner, one fine tooth 21 is connected with two grooves 22 on the same side and one groove 22 on different sides, six reinforcing ribs 23 in different directions are connected to the same fine tooth 21, the structural strength of the fine slicing cutter head 2 is stronger, and the service life is longer.

[0072] The six reinforcing ribs 23 in the three grooves 22 on the same side are arranged in a staggered manner, the six reinforcing ribs 23 in the same group are arranged in a staggered manner from inside to outside, and the groups of reinforcing ribs 23 on the same side are arranged in a turbine distribution, that is, the three reinforcing ribs 23 in the three grooves 22 close to the center of the base 1 are connected to form an arc line extending from inside to outside, the three reinforcing ribs 23 in the three grooves 22 away from the center of the base 1 are connected to form an arc line extending from inside to outside, and the groups of reinforcing ribs 23 on the same side are arranged in two turbine line distributions, the fine teeth 21 and the fine teeth 21 are formed in mutual extrusion and traction by regularly adding the reinforcing ribs 23 in the middle on the basis of the conventional turbine fine teeth 21, the strength between the fine teeth 21 and the fine teeth 21 is enhanced, the cold pressure formability is improved, and the service life of the fine slicing is prolonged.

[0073] The fine slicing cutter head 2 is arranged on the inner ring close to the outer circumferential circle of the base 1 to form an annular groove 24 wrapped in the outer circumferential circle of the base 1, and the reinforcing positions 25 formed on both sides of the annular groove 24 are arranged in the grooves 22 on the upper and lower sides, so that the fine slicing cutter head 2 can be firmly sintered on the base 1.

[0074] The fine teeth 21 and the reinforcing ribs 23 on the same side are arranged in a turbine distribution in a clockwise direction, or the fine teeth 21 and the reinforcing ribs 23 on the same side are arranged in a turbine distribution in a counterclockwise direction.

[0075] The fine teeth 21 and the reinforcing ribs 23 are integrally formed, the structural strength of the fine slicing cutter head is stronger, and the cutting efficiency is better.

[0076] The fine teeth 21 of the present application are arranged gradually expanding from the end close to the base 1 to the end away from the base 1; the cutting performance is better.

[0077] The flange sheet 11 is welded on both sides of the base 1, four long strip-shaped holes 12 are arranged on the circumference of the base 1 and penetrate the upper and lower sides, and the length direction of the long strip-shaped hole 12 is in the diameter direction of the base 1; the outer circumference of the flange sheet 11 has a welding part 111 welded on the side of the base 1 and four vacant parts 112 which span the long strip-shaped hole 12 and are not welded with the base 1.

[0078] The base 1 of the present application is provided with four long strip-shaped holes 12 which penetrate the upper and lower sides, and the outer circumference of the flange sheet 11 has a welding part 111 welded on the side of the base 1 and four vacant parts 112 which span the long strip-shaped hole 12 and are not welded with the base 1; during the welding of the flange sheet 11, the vacant part 112 of the flange sheet 11 which spans the long strip-shaped hole 12 is not welded together with the base 1, the long strip-shaped hole 12 and the vacant part 112 can provide deformation accommodation space, the deformation accommodation space can release internal stress, solve the problem that the base 1 is easy to deform after welding the flange sheet 11, increase the structural strength of the base 1, prolong the service life of the fine cutting piece, and through the use of the fine cutting piece.

[0079] The base 1 of the present application is provided with a plurality of round holes 13 on the circumference close to the fine cutting piece cutter head 2, and the different shapes of the long strip-shaped hole 12 and the round hole 13 solve the problem that the base 1 is deformed after sintering due to the release of internal stress.

[0080] The number of the round holes 13 is eight, and one round hole 13 is symmetrically arranged on both sides of each long strip-shaped hole 12, the internal stress is released more uniformly, and the base 1 is not easy to deform.

[0081] The diameter of the circular ring where the outer end of the long strip-shaped hole 12 is located is greater than the diameter of the circular ring where the inner end of the round hole 13 is located, the outer end of the long strip-shaped hole 12 is the farthest point of the long strip-shaped hole 12 from the center of the base 1, and the inner end of the round hole 13 is the nearest point of the round hole 13 from the center of the base 1; the space of the long strip-shaped hole 12 and the round hole 13 releasing internal stress overlaps, the internal stress is released more uniformly, and the base 1 is not easy to deform.

[0082] The above embodiments and drawings are not limited to the product shape and style of the present application, and any appropriate changes or modifications made by ordinary skilled persons in the art shall be considered as not departing from the patent scope of the present application.

Claims

1. An ultra-thin fine section, characterized by: The invention comprises a base body and a circular ring-shaped fine slicing cutter head sintered and fixed on the outer circumference of the base body, wherein the upper and lower side surfaces of the fine slicing cutter head are respectively provided with a plurality of turbine-distributed fine teeth, and the fine teeth on the upper and lower side surfaces of the fine slicing cutter head are staggered and connected to form an integral structure; the interval between two adjacent fine teeth on the same side surface forms a groove, and two reinforcing ribs connecting the two adjacent fine teeth are provided in the groove; the reinforcing ribs in the two adjacent grooves on the fine slicing cutter head are staggered.

2. The ultra-thin fine section according to claim 1, characterized in that: The reinforcing ribs in two adjacent grooves on the same side are staggered.

3. The ultra-thin fine section according to claim 1, characterized in that: The six reinforcing ribs in three connected grooves on the same side are grouped together. The six reinforcing ribs in the same group are staggered and arranged from the inside to the outside. The multiple groups of reinforcing ribs on the same side are distributed in a turbine pattern.

4. The ultra-thin fine section according to claim 1, characterized in that: The fine slicing cutter head forms an annular groove wrapped around the outer circumference of the base on the inner ring close to the outer circumference of the base, and reinforcement parts formed on both sides of the annular groove are respectively provided in the grooves on the upper and lower sides.

5. The ultra-thin fine section according to claim 1, characterized in that: Flanges are welded to the two side surfaces of the base respectively, and four long strip holes are provided on the circumference of the base penetrating the upper and lower side surfaces. The outer circumference of the flange has a welding portion welded to the side surface of the base and four vacant portions spanning the long strip holes and not welded to the base; and the base is provided with a plurality of circular holes on the circumference near the fine slicing cutter head.

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