CN116175430A - Diamond millstone with high binding force and good excretion effect - Google Patents

Diamond millstone with high binding force and good excretion effect Download PDF

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Publication number
CN116175430A
CN116175430A CN202211187944.5A CN202211187944A CN116175430A CN 116175430 A CN116175430 A CN 116175430A CN 202211187944 A CN202211187944 A CN 202211187944A CN 116175430 A CN116175430 A CN 116175430A
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China
Prior art keywords
diamond
parts
grinding
diamond grinding
grinding disc
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CN202211187944.5A
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Chinese (zh)
Inventor
邱瑜铭
肖双喜
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Jiangsu Fengtai Tools Co ltd
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Jiangsu Fengtai Tools Co ltd
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Priority to CN202211187944.5A priority Critical patent/CN116175430A/en
Publication of CN116175430A publication Critical patent/CN116175430A/en
Pending legal-status Critical Current

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B24—GRINDING; POLISHING
    • B24D—TOOLS FOR GRINDING, BUFFING OR SHARPENING
    • B24D5/00—Bonded abrasive wheels, or wheels with inserted abrasive blocks, designed for acting only by their periphery; Bushings or mountings therefor
    • B24D5/06—Bonded abrasive wheels, or wheels with inserted abrasive blocks, designed for acting only by their periphery; Bushings or mountings therefor with inserted abrasive blocks, e.g. segmental
    • B24D5/066—Bonded abrasive wheels, or wheels with inserted abrasive blocks, designed for acting only by their periphery; Bushings or mountings therefor with inserted abrasive blocks, e.g. segmental with segments mounted axially one against the other
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B24—GRINDING; POLISHING
    • B24D—TOOLS FOR GRINDING, BUFFING OR SHARPENING
    • B24D5/00—Bonded abrasive wheels, or wheels with inserted abrasive blocks, designed for acting only by their periphery; Bushings or mountings therefor
    • B24D5/10—Bonded abrasive wheels, or wheels with inserted abrasive blocks, designed for acting only by their periphery; Bushings or mountings therefor with cooling provisions, e.g. with radial slots
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B24—GRINDING; POLISHING
    • B24D—TOOLS FOR GRINDING, BUFFING OR SHARPENING
    • B24D5/00—Bonded abrasive wheels, or wheels with inserted abrasive blocks, designed for acting only by their periphery; Bushings or mountings therefor
    • B24D5/16—Bushings; Mountings

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Polishing Bodies And Polishing Tools (AREA)

Abstract

The invention discloses a diamond grinding disc with high binding force and good drainage effect, and belongs to the technical field of grinding tools. The inner ring of the millstone matrix is provided with a water drop-shaped drain hole A, the diamond grinding blocks are divided into a plurality of groups, and each group consists of two L-shaped grinding blocks which are oppositely arranged; and a drain through groove is formed between each group of two L-shaped grinding blocks at intervals, and a base body corresponding to the drain through groove is provided with a drain hole B. The grinding block is made of metal powder such as copper, iron, tin, cobalt, nickel, phosphorus copper alloy and the like, and diamond and liquid paraffin, through the optimal design of the tool bit and the matrix, the contact surface is provided with more chip removing holes when the grinding disc is used for grinding, more sand and stones and dust can be discharged through the chip removing holes when concrete and granite are cut, and more heat generated during grinding is taken away along with the flowing of the sand and the dust, so that the influence on the use caused by the burning of the diamond tool bit due to overheating of the tool bit of the grinding disc is reduced.

Description

Diamond millstone with high binding force and good excretion effect
Technical Field
The invention relates to the technical field of polishing tools, in particular to a diamond grinding disc with high binding force and good drainage effect, which is mainly used for polishing, flattening, renovating and the like of reinforced concrete pavements and expressways, bridges and underground civil air defense engineering pavements.
Background
Under the large background of high-speed economic development at present, energy conservation and environmental protection are more and more concerned, and the foundation construction is not separated from the polishing tool. Most of traditional similar products need to be cooled by adding water, a large amount of dust is generated, the construction site is difficult to treat due to the water adding, and even the problem of personal injury caused by electric leakage in the construction process of using water occurs.
Therefore, it is very important to develop a polishing tool which is more efficient and energy-saving, has more environment-friendly use conditions and does not generate redundant waste water, so that better economic benefit is obtained, and the waste of electric energy and excessive consumption of diamond and metal powder are reduced.
Disclosure of Invention
The invention aims to provide the diamond grinding disc with high binding force and good drainage effect, through the optimal design of the cutter head and the matrix, more chip removal holes are formed in the contact surface of the grinding disc, more sand and dust can be discharged through the chip removal holes when concrete and granite are cut, and more heat generated during grinding is taken away along with the flow of the sand and dust, so that the influence of the burning of the diamond cutter head caused by overheating of the cutter head of the grinding disc is reduced.
In order to achieve the above purpose, the technical scheme adopted by the invention is as follows:
the diamond grinding disc with high binding force and good drainage effect comprises a grinding disc substrate and a diamond grinding block, wherein the grinding disc substrate is 45# steel; the raw materials of the diamond grinding block consist of copper, tin, nickel, cobalt, phosphor-copper alloy, liquid paraffin and diamond, wherein the granularity of the diamond is 40/50 or 50/60, and the compressive strength is 25-40kg.
The phosphorus element content in the phosphorus-copper alloy is 8-15wt.%.
The diamond grinding block comprises the following raw materials in parts by weight:
23-34 parts of copper, 29-40 parts of iron, 4-12 parts of nickel, 11-20 parts of cobalt, 5-10 parts of tin, 5-12 parts of phosphor-copper alloy, 0.9-1.6 parts of liquid paraffin and 1.0-2.4 parts of diamond.
The diamond grinding block is preferably prepared from the following raw materials in parts by weight:
27-29 parts of copper, 30-38 parts of iron, 5-10 parts of nickel, 12-17 parts of cobalt, 6-9 parts of tin, 6-11 parts of phosphor-copper alloy, 1.0-1.5 parts of liquid paraffin and 1.2-2.2 parts of diamond.
The raw materials of the diamond grinding block are more preferably prepared from the following components in parts by weight:
28 parts of copper, 32 parts of iron, 7 parts of nickel, 12 parts of cobalt, 8 parts of tin, 7 parts of phosphorus-copper alloy, 1.3 parts of liquid paraffin and 1.6 parts of diamond.
The millstone matrix comprises a millstone outer ring and a millstone inner ring; the diamond grinding block is welded on the outer ring of the disc body; wherein: the inner ring of the millstone substrate is provided with water drop-shaped drain holes A, and the number of the drain holes A is 3-6; the diamond grinding blocks are in a plurality of groups, and each group consists of two L-shaped grinding blocks which are oppositely arranged; and a drain hole B is formed on a matrix corresponding to the drain through grooves, wherein a 5-10mm interval is reserved between each two L-shaped grinding blocks.
The center of the millstone substrate is provided with a mounting hole for being mounted on a mill; the millstone matrix is provided with a drain notch on the edge of the outer periphery of the millstone body and between two adjacent groups of diamond grinding blocks.
The drain hole A is arranged between two groups of diamond grinding blocks, so that convection is formed between the drain hole A and a drain notch of the outer ring of the disc body.
The manufacturing method of the diamond grinding disc with high binding force and good drainage effect comprises the following steps:
(1) Processing a substrate:
according to the drawing requirements, performing quenching heat treatment, tempering, laser cutting, tempering, plane grinding, inner hole grinding, excircle grinding, deburring and the like on the steel plate;
(2) Preparing a diamond grinding block:
weighing and uniformly mixing the raw materials according to the composition of the raw materials of the diamond grinding block, then placing the raw materials into a mould for cold press molding, and then performing hot press sintering, wherein the diamond grinding block is prepared after the sintering and the grinding by adopting a grinding wheel abrasive belt;
(3) High-frequency welding:
placing the grinding block on the corresponding position of the matrix, placing the copper welding sheet between the grinding block and the matrix, and then heating to the welding temperature;
(4) And carrying out sand blasting treatment on the inner side surface of the grinding block of the diamond grinding disc obtained after welding, and then polishing the working surface of the diamond grinding block by using a grinding wheel, so that the diamond is exposed.
In the step (2), the hot pressing sintering temperature is 630-680 ℃ and the pressure is 240-320 g/cm 2 The heat preservation time is 200-300 seconds;
in the step (3), the high-frequency welding temperature is 700-735 ℃ and the welding time is 10-15 seconds.
The design principle and the beneficial effects of the invention are as follows:
1. according to the invention, the structure of the diamond grinding block is improved, each group of grinding blocks is designed to be double-L-shaped, and during the cutting process, the chippings, sand, stones and dust generated during the grinding of the grinding blocks can be rapidly discharged through the discharge through grooves and the discharge holes B between the double-L-shaped grinding blocks, and the high heat generated during the grinding of the grinding blocks is taken away.
2. According to the grinding disc base body, the drainage through grooves are cut in the middle of each group of two grinding blocks, so that larger wind flow is generated, cooling is accelerated, 3-6 drip type drainage holes A are formed in the center of the base body, dust and sand generated during grinding can be further discharged, and convection is formed between the dust and sand and the drainage hole notch of the outer ring of the grinding disc.
3. The invention adopts high-frequency welding, the welding sheet is a copper sheet, and the welding fastness can be kept unchanged even if the grinding block generates a higher temperature in the grinding process after high-temperature welding due to the higher melting point of copper.
4. According to the invention, the grinding block is L-shaped and has a small contact surface with the substrate, so that the grinding block is easy to fall off in the grinding process. In order to improve the binding force between the grinding block and the matrix, and simultaneously, the copper sheet is adopted as a welding sheet, so that the components of the grinding block are optimally designed. The high-content iron is adopted in the grinding block to improve the wettability with the matrix material, and the high-content copper element is adopted in the grinding block to improve the wettability with the copper brazing sheet, but copper and iron are easy to oxidize during high-temperature sintering and welding, so that one part of the copper element is provided by elemental copper, and the other part of the copper element is provided by copper-phosphorus alloy, so that the tendency that the elemental copper is easy to oxidize during hot press sintering and welding is reduced. The copper-phosphorus alloy is used for providing copper element on one hand, and on the other hand, the copper-phosphorus alloy has the function of high-temperature oxygen absorption, so that the oxygen content of a welding surface can be reduced during sintering and welding, the oxidation tendency of copper and iron is reduced, and the binding force is improved.
5. The grinding block and the matrix are welded at high frequency, and the components of the grinding block (such as proper addition of tin, phosphorus and copper alloy) are designed, so that the sintering and welding temperatures are low, the welding bonding strength is high, the safety performance is better, and the grinding block can ensure that the cutter head can withstand high-speed collision and is not easy to fall off when grinding hard objects such as steel bars, cobbles and the like. While ensuring the strength of the grinding block (e.g., proper addition of cobalt).
6. The diamond grinding disc does not need to be cooled by adding water, so that the construction site is difficult to treat due to the water addition, and the risk of personal injury caused by electric leakage in the construction process using water is reduced. The invention can be matched with dust removing equipment to quickly suck away dust.
Drawings
Fig. 1 is a schematic view (front view) of the diamond grinding disc according to the invention.
Fig. 2 is a schematic view (radial cross-sectional view of a disc body) of the diamond grinding disc.
In the figure: 1-grinding disc matrix; 2-grinding blocks; 3-a drain hole A; 4-a drain hole B; 5-draining through grooves; 6-drainage notch.
Detailed Description
For a further understanding of the present invention, the present invention is described below with reference to the examples, which are only illustrative of the features and advantages of the present invention and are not intended to limit the scope of the claims of the present invention.
The invention provides a diamond grinding disc with high binding force and good drainage effect, which comprises a grinding disc substrate 1 and a diamond grinding block, as shown in figures 1-2. The millstone matrix is 45# steel and comprises a millstone outer ring and a millstone inner ring; the diamond grinding block is welded on the outer ring of the disc body; wherein: the inner ring of the millstone substrate is provided with water drop-shaped drain holes A3, and the number of the drain holes A is 3-6; the diamond grinding blocks are in a plurality of groups, and each group consists of two L-shaped grinding blocks 2 which are oppositely arranged (the free ends of the two L-shaped grinding blocks are oppositely arranged); and a drain through groove 5 is formed between each group of two L-shaped grinding blocks at a 5-10mm interval, and a drain hole B4 is formed on a substrate corresponding to the drain through groove.
The center of the millstone substrate is provided with a mounting hole for being mounted on a mill; the grinding disc substrate is provided with a drain notch 6 on the edge of the outer periphery of the disc body and between two adjacent groups of diamond grinding blocks.
The drain hole A is arranged between two groups of diamond grinding blocks (the drain hole A is arranged on the inner side of the drain notch), so that convection is formed between the drain hole A and the drain notch of the outer ring of the disc body.
In the following examples, the raw materials of the diamond grinding block consist of copper, tin, nickel, cobalt, phosphor copper alloy, liquid paraffin and diamond, wherein the granularity of the diamond is 40/50 or 50/60, and the compressive strength is 25-40kg; the phosphorus element content in the phosphorus-copper alloy is 12wt.%.
Example 1:
the diamond grinding disc of the embodiment is prepared as follows:
1. according to the drawing requirements, the substrate is subjected to quenching heat treatment by a steel plate, tempering, laser cutting, tempering, plane grinding, inner hole grinding, excircle grinding, deburring and other procedures;
2. 2.85kg of copper powder, 3.55kg of iron powder, 0.9kg of nickel powder, 1.2kg of cobalt powder, 0.6kg of tin powder and 1.0kg of phosphor-copper alloy are taken and put into a mixing barrel to be mixed for 40 minutes, 0.11kg of liquid paraffin and 0.21kg of diamond are added, and the mixing is continued for 3 hours; and then pouring the powder into a mould for cold press molding, hot press sintering and grinding the grinding block by a grinding wheel abrasive belt. Wherein the hot press sintering temperature is 665 ℃ and the pressure is 300g/cm 2 The incubation time was 240 seconds.
3. Placing the grinding block and the matrix at the corresponding matrix position according to the drawing requirement, placing a copper welding sheet between the grinding block and the matrix, adjusting the high-frequency welding machine to the proper position of the grinding block and the matrix, starting the high-frequency welding machine for welding, wherein the welding temperature is 725 ℃, and the welding time is 12 seconds; after the grinding block and the matrix were welded together, the welding speed was 600N/mm 2 And (5) detecting the welding strength of each diamond grinding block according to the strength standard, wherein the detection result is qualified.
4. Polishing the surface of the substrate with a polishing machine to obtain a bright surface, polishing the working surface of the diamond block with a grinding wheel to expose the diamond, spraying paint on the surface, and drying to prevent rust on the surface, and finally polishing at 600N/mm 2 And (3) detecting the welding strength of each diamond grinding block according to the strength standard, spraying paint on the surface after the diamond grinding blocks are qualified, drying to prevent the surface from rusting, and finally performing silk screen printing, laser marking, packaging and warehousing.
Example 2:
the diamond grinding disc of the embodiment is prepared as follows:
1. according to the drawing requirements, the substrate is subjected to quenching heat treatment by a steel plate, tempering, laser cutting, tempering, plane grinding, inner hole grinding, excircle grinding, deburring and other procedures;
2. 2.8kg of copper powder, 3.2kg of iron powder, 0.7kg of nickel powder, 1.2kg of cobalt powder, 0.8kg of tin powder and 0.7kg of phosphor-copper alloy are taken and put into a mixing bucket to be mixed for 40 minutes, 0.13kg of liquid paraffin and 0.16kg of diamond are added, and the mixing is continued for 3 hours; and then pouring the powder into a mould for cold press molding, hot press sintering and grinding the grinding block by a grinding wheel abrasive belt. Wherein the hot press sintering temperature is 665 ℃ and the pressure is 300g/cm 2 The incubation time was 240 seconds.
3. Placing the grinding block and the matrix at the corresponding matrix position according to the drawing requirement, placing a copper welding sheet between the grinding block and the matrix, adjusting the high-frequency welding machine to the proper position of the grinding block and the matrix, starting the high-frequency welding machine for welding, wherein the welding temperature is 725 ℃, and the welding time is 12 seconds; after the grinding block and the matrix were welded together, the welding speed was 600N/mm 2 And (5) detecting the welding strength of each diamond grinding block according to the strength standard, wherein the detection result is qualified.
4. Polishing the surface of the substrate with a polishing machine to obtain a bright surface, polishing the working surface of the diamond block with a grinding wheel to expose the diamond, spraying paint on the surface, and drying to prevent rust on the surface, and finally polishing at 600N/mm 2 And (3) detecting the welding strength of each diamond grinding block according to the strength standard, spraying paint on the surface after the diamond grinding blocks are qualified, drying to prevent the surface from rusting, and finally performing silk screen printing, laser marking, packaging and warehousing.
Example 3:
the diamond grinding disc of the embodiment is prepared as follows:
1. according to the drawing requirements, the substrate is subjected to quenching heat treatment by a steel plate, tempering, laser cutting, tempering, plane grinding, inner hole grinding, excircle grinding, deburring and other procedures;
2. 2.85kg of copper powder, 3.75kg of iron powder, 0.6kg of nickel powder, 1.5kg of cobalt powder, 0.85kg of tin powder and 0.9kg of phosphor-copper alloy are taken and put into a mixing barrel to be mixed for 40 minutes, 0.13kg of liquid paraffin and 0.18kg of diamond are added, and the mixing is continued for 3 hours; and then pouring the powder into a mould for cold press molding, hot press sintering and grinding the grinding block by a grinding wheel abrasive belt. Wherein the hot press sintering temperature is 670 ℃ and the pressure is 300g/cm 2 The incubation time was 240 seconds.
3. Placing the grinding block and the matrix at the corresponding matrix position according to the drawing requirement, placing a copper welding sheet between the grinding block and the matrix, adjusting the high-frequency welding machine to the proper position of the grinding block and the matrix, starting the high-frequency welding machine for welding, wherein the welding temperature is 715 ℃, and the welding time is 12 seconds; after the grinding block and the matrix were welded together, the welding speed was 600N/mm 2 And (5) detecting the welding strength of each diamond grinding block according to the strength standard, wherein the detection result is qualified.
4. Polishing the surface of the substrate with a polishing machine to obtain a bright surface, polishing the working surface of the diamond block with a grinding wheel to expose the diamond, spraying paint on the surface, and drying to prevent rust on the surface, and finally polishing at 600N/mm 2 And (3) detecting the welding strength of each diamond grinding block according to the strength standard, spraying paint on the surface after the diamond grinding blocks are qualified, drying to prevent the surface from rusting, and finally performing silk screen printing, laser marking, packaging and warehousing.

Claims (10)

1. The utility model provides a diamond mill that high cohesion, excrete effectual which characterized in that: the diamond grinding disc comprises a grinding disc substrate and a diamond grinding block, wherein the grinding disc substrate is 45# steel; the raw materials of the diamond grinding block consist of copper, tin, nickel, cobalt, phosphor-copper alloy, liquid paraffin and diamond, wherein the granularity of the diamond is 40/50 or 50/60, and the compressive strength is 25-40kg.
2. The diamond grinding disc with high binding force and good drainage effect according to claim 1, wherein the diamond grinding disc is characterized in that: the phosphorus element content in the phosphorus-copper alloy is 8-15wt.%.
3. The diamond grinding disc with high binding force and good drainage effect according to claim 1, wherein the diamond grinding disc is characterized in that: the diamond grinding block comprises the following raw materials in parts by weight:
23-34 parts of copper, 29-40 parts of iron, 4-12 parts of nickel, 11-20 parts of cobalt, 5-10 parts of tin, 5-12 parts of phosphor-copper alloy, 0.9-1.6 parts of liquid paraffin and 1.0-2.4 parts of diamond.
4. The diamond grinding disc with high binding force and good drainage effect according to claim 1, wherein the diamond grinding disc is characterized in that: the diamond grinding block comprises the following raw materials in parts by weight:
27-29 parts of copper, 30-38 parts of iron, 5-10 parts of nickel, 12-17 parts of cobalt, 6-9 parts of tin, 6-11 parts of phosphor-copper alloy, 1.0-1.5 parts of liquid paraffin and 1.2-2.2 parts of diamond.
5. The diamond grinding disc with high binding force and good drainage effect according to claim 1, wherein the diamond grinding disc is characterized in that: the diamond grinding block comprises the following raw materials in parts by weight:
28 parts of copper, 32 parts of iron, 7 parts of nickel, 12 parts of cobalt, 8 parts of tin, 7 parts of phosphorus-copper alloy, 1.3 parts of liquid paraffin and 1.6 parts of diamond.
6. The diamond grinding disc with high binding force and good drainage effect according to claim 1, wherein the diamond grinding disc is characterized in that: the millstone matrix comprises a millstone outer ring and a millstone inner ring; the diamond grinding block is welded on the outer ring of the disc body; wherein: the inner ring of the millstone substrate is provided with water drop-shaped drain holes A, and the number of the drain holes A is 3-6; the diamond grinding blocks are in a plurality of groups, and each group consists of two L-shaped grinding blocks which are oppositely arranged; and a drain hole B is formed on a matrix corresponding to the drain through grooves, wherein a 5-10mm interval is reserved between each two L-shaped grinding blocks.
7. The diamond grinding disc with high binding force and good drainage effect according to claim 6, wherein: the center of the millstone substrate is provided with a mounting hole for being mounted on a mill; the millstone matrix is provided with a drain notch on the edge of the outer periphery of the millstone body and between two adjacent groups of diamond grinding blocks.
8. The diamond grinding disc with high binding force and good drainage effect according to claim 6, wherein: the drain hole A is arranged between two groups of diamond grinding blocks, so that convection is formed between the drain hole A and a drain notch of the outer ring of the disc body.
9. The diamond grinding disc with high binding force and good drainage effect according to claim 1, wherein the diamond grinding disc is characterized in that: the method is characterized in that: the manufacturing method of the diamond grinding disc comprises the following steps:
(1) Processing a substrate:
according to the drawing requirements, performing quenching heat treatment, tempering, laser cutting, tempering, plane grinding, inner hole grinding, excircle grinding, deburring and the like on the steel plate;
(2) Preparing a diamond grinding block:
weighing and uniformly mixing the raw materials according to the composition of the raw materials of the diamond grinding block, then placing the raw materials into a mould for cold press molding, and then performing hot press sintering, and grinding by adopting a grinding wheel abrasive belt to obtain the diamond grinding block after sintering;
(3) High-frequency welding:
placing the grinding block on the corresponding position of the matrix, placing the copper welding sheet between the grinding block and the matrix, and then heating to the welding temperature;
(4) And carrying out sand blasting treatment on the inner side surface of the grinding block of the diamond grinding disc obtained after welding, and then polishing the working surface of the diamond grinding block by using a grinding wheel, so that the diamond is exposed.
10. The diamond grinding disc with high binding force and good drainage effect according to claim 9, wherein: in the step (2), the hot pressing sintering temperature is 630-680 ℃ and the pressure is 240-320 g/cm 2 The heat preservation time is 200-300 seconds; in the step (3), the high-frequency welding temperature is 700-735 ℃ and the welding time is 10-15 seconds.
CN202211187944.5A 2022-09-28 2022-09-28 Diamond millstone with high binding force and good excretion effect Pending CN116175430A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202211187944.5A CN116175430A (en) 2022-09-28 2022-09-28 Diamond millstone with high binding force and good excretion effect

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202211187944.5A CN116175430A (en) 2022-09-28 2022-09-28 Diamond millstone with high binding force and good excretion effect

Publications (1)

Publication Number Publication Date
CN116175430A true CN116175430A (en) 2023-05-30

Family

ID=86442953

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202211187944.5A Pending CN116175430A (en) 2022-09-28 2022-09-28 Diamond millstone with high binding force and good excretion effect

Country Status (1)

Country Link
CN (1) CN116175430A (en)

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