CN112238220B - Interlayer matrix material and preparation method of diamond tool bit - Google Patents
Interlayer matrix material and preparation method of diamond tool bit Download PDFInfo
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- 239000011159 matrix material Substances 0.000 title claims abstract description 123
- 239000011229 interlayer Substances 0.000 title claims abstract description 118
- 229910003460 diamond Inorganic materials 0.000 title claims abstract description 43
- 239000010432 diamond Substances 0.000 title claims abstract description 43
- 238000002360 preparation method Methods 0.000 title claims abstract description 7
- 239000010410 layer Substances 0.000 claims abstract description 76
- 239000000203 mixture Substances 0.000 claims abstract description 60
- 239000000843 powder Substances 0.000 claims abstract description 39
- 238000003825 pressing Methods 0.000 claims abstract description 35
- 238000011068 loading method Methods 0.000 claims abstract description 28
- 238000005245 sintering Methods 0.000 claims abstract description 27
- 239000000463 material Substances 0.000 claims abstract description 8
- 238000011049 filling Methods 0.000 claims description 28
- 238000000034 method Methods 0.000 claims description 16
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims description 11
- 229910052742 iron Inorganic materials 0.000 claims description 11
- 229910052760 oxygen Inorganic materials 0.000 claims description 11
- 239000001301 oxygen Substances 0.000 claims description 11
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 10
- 229910002804 graphite Inorganic materials 0.000 claims description 10
- 239000010439 graphite Substances 0.000 claims description 10
- 238000004519 manufacturing process Methods 0.000 claims description 10
- 238000003756 stirring Methods 0.000 claims description 9
- 238000005303 weighing Methods 0.000 claims description 9
- 229910000789 Aluminium-silicon alloy Inorganic materials 0.000 claims description 6
- 229910052725 zinc Inorganic materials 0.000 claims description 5
- 229910052802 copper Inorganic materials 0.000 claims description 4
- 239000002245 particle Substances 0.000 claims description 4
- 239000000126 substance Substances 0.000 abstract description 5
- 230000009286 beneficial effect Effects 0.000 abstract description 3
- 238000005520 cutting process Methods 0.000 abstract description 2
- 230000003647 oxidation Effects 0.000 abstract description 2
- 238000007254 oxidation reaction Methods 0.000 abstract description 2
- 239000004575 stone Substances 0.000 abstract description 2
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 31
- 230000000052 comparative effect Effects 0.000 description 11
- 238000005299 abrasion Methods 0.000 description 3
- 239000000956 alloy Substances 0.000 description 2
- 229910045601 alloy Inorganic materials 0.000 description 2
- 238000005275 alloying Methods 0.000 description 2
- 239000007791 liquid phase Substances 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 229910001369 Brass Inorganic materials 0.000 description 1
- 239000010951 brass Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000008020 evaporation Effects 0.000 description 1
- 238000001704 evaporation Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000001737 promoting effect Effects 0.000 description 1
Classifications
-
- B22F1/0003—
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
- B22F5/00—Manufacture of workpieces or articles from metallic powder characterised by the special shape of the product
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
- B22F7/00—Manufacture of composite layers, workpieces, or articles, comprising metallic powder, by sintering the powder, with or without compacting wherein at least one part is obtained by sintering or compression
- B22F7/02—Manufacture of composite layers, workpieces, or articles, comprising metallic powder, by sintering the powder, with or without compacting wherein at least one part is obtained by sintering or compression of composite layers
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/002—Ferrous alloys, e.g. steel alloys containing In, Mg, or other elements not provided for in one single group C22C38/001 - C22C38/60
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/02—Ferrous alloys, e.g. steel alloys containing silicon
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/06—Ferrous alloys, e.g. steel alloys containing aluminium
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/16—Ferrous alloys, e.g. steel alloys containing copper
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
- B22F5/00—Manufacture of workpieces or articles from metallic powder characterised by the special shape of the product
- B22F2005/001—Cutting tools, earth boring or grinding tool other than table ware
Abstract
The invention discloses a preparation method of an interlayer matrix material and a diamond tool bit, belonging to the field of stone cutting, wherein the interlayer matrix material comprises the following components in percentage by mass: 85-65% of Fe, 8-15% of Zn, 5-20% of Cu and 2-5% of ALSi, and respectively loading the interlayer matrix material, the first working layer mixture and the second working layer mixture into corresponding hoppers; feeding the first working layer mixture into the mold cavity, and repeatedly feeding the interlayer matrix material and the second working layer mixture into the mold cavity, wherein the pre-pressing pressure is 50-100KG/cm higher than the previous one each time2And demolding and sintering to obtain the required diamond tool bit. The invention has the beneficial effects that: the simple substance Fe powder with coarse granularity is adopted, the specific surface area of the powder is smaller, the oxidation resistance is stronger, the powder is applied to a multi-layer full-automatic cold press, the labor and material cost can be greatly reduced while the efficiency is improved, the better sintering performance is kept, the better sintering density is achieved, the strength is good, and the wear speed of a working layer of a tool bit can be effectively matched.
Description
Technical Field
The invention relates to the field of stone cutting tools, in particular to a manufacturing method of an interlayer matrix material and a diamond tool bit.
Background
The traditional diamond cutter head is composed of a working layer and an iron sheet interlayer, the working layer and the iron sheet are mutually overlapped and arranged in a graphite mold in the production process, and then sintering is carried out, although the cutter head produced by the process has great progress in sharpness, a large amount of labor cost needs to be invested, along with the fierce competition of products and the increase of the labor cost, the automation and the intelligent development of equipment are promoted, a multi-layer full-automatic cold press is produced, the multi-layer cold pressing can be automatically realized, the cold pressing cost and the later blank installation and sintering cost are reduced, but the traditional iron sheet interlayer has incompressibility and cannot be used for multi-layer automatic cold pressing equipment, and therefore the interlayer powder using the diamond cutter head replaces the iron sheet interlayer to be in urgent need.
Disclosure of Invention
The invention aims to provide an interlayer matrix material and a preparation method of a diamond cutter head, which are suitable for a multilayer full-automatic cold press, can greatly reduce the cost of labor, materials and the like while improving the efficiency, keep better sintering performance, achieve better sintering density, have good strength and can effectively match the abrasion speed of a cutter head working layer. The specific technical scheme is as follows:
the interlayer matrix material comprises the following components in percentage by mass: 85-65% of Fe, 8-15% of Zn, 5-20% of Cu and 2-5% of ALSi.
Further, the interlayer matrix material comprises the following components in percentage by mass: 85% Fe, 8% Zn, 5% Cu and 2% ALSi.
Further, the interlayer matrix material comprises the following components in percentage by mass: 70% Fe, 15% Zn, 10% Cu and 5% ALSi.
Further, the powder particle size of the interlayer matrix material is 100-500 meshes.
Further, the powder particle size of the interlayer matrix material is 200-400 meshes.
Further, the oxygen content of the interlayer matrix material is 1500-.
Further, the oxygen content of the interlayer matrix material is 2000-3000 PPM.
The invention also relates to a method for preparing the diamond tool bit, which is prepared by adopting the interlayer matrix material of any one of claims 1 to 7 and comprises the following steps:
step one, preparing an interlayer matrix material, weighing 85-65% of Fe, 8-15% of Zn, 5-20% of Cu and 2-5% of ALSi powder according to mass percentage, and uniformly stirring for 45-90 minutes to obtain the uniformly mixed interlayer matrix material;
step two, respectively loading the interlayer matrix material, the first working layer mixture and the second working layer mixture into corresponding hoppers in a multi-layer full-automatic cold press;
step three, the mixture of the first working layer is sent into a mold cavity, and 200-400KG/cm is adopted2The first pressure prepressing is carried out, the prepressed first blank body is left in a die cavity and stays at a proper position, and a cavity filled with interlayer matrix materials is reserved above the first blank body;
step four, feeding the interlayer matrix material into a mold cavity, filling the cavity reserved above the previous blank, and adopting the height of 50-100KG/cm on the basis of the previous pre-pressing pressure2The interlayer matrix material and the last blank are pressed together, the pre-pressed blank is left in a die cavity and stays at a proper position, and a space for filling the mixture of the second working layer is reserved above the blank;
step five, feeding the mixture of the second working layer into the mold cavity, filling the reserved cavity, and adopting the height of 50-100KG/cm on the basis of the previous prepressing pressure2The second working layer mixture and the last blank are pressed together, the pre-pressed blank is left in a die cavity and stays at a proper position, and a space for filling the next interlayer matrix material is reserved above the blank;
step six, repeating the step four and the step five in sequence, wherein the repetition frequency is 0-N times, N is a natural number, and the prepressing pressure adopted in each step is 50-100KG/cm higher than the prepressing pressure used last time2；
Step seven, the cold pressing of the whole cutter head blank body is completed after demoulding;
and step eight, loading the diamond tool bit into a tray for standby, loading the tray into a die, and sintering to obtain the required diamond tool bit.
Further, the interlayer matrix mixed material is uniformly stirred by a three-dimensional mixer for 45-90 minutes in the step one.
Further, the mold is a graphite mold.
Has the advantages that:
the technical scheme of the invention has the following beneficial effects:
firstly, the interlayer matrix material adopts coarse-grained elementary substance Fe powder, the specific surface area of the powder is smaller, the contact area of the material with the same mass and air is much smaller than that of fine-grained powder, the oxidation resistance is stronger, the powder is more stable than that of the fine-grained powder, and meanwhile, the elementary substance Fe powder is lower in price compared with the traditional iron-based pre-alloy powder, and the interlayer matrix material elementary substance Fe powder accounts for more than 65% of the whole interlayer matrix material, so that the price cost is greatly reduced.
Zn powder is added into the interlayer matrix material, is in a liquid phase state in the sintering process, belongs to pure liquid phase sintering, can flow, creep and fill in a thicker iron powder gap, promotes uniform alloying of components, and is beneficial to matrix sintering; cu powder is also added into the interlayer matrix material, and the Cu powder and the Zn powder can easily generate brass alloy, so that the evaporation loss of Zn can be prevented, the alloying sintering of Zn and Fe in the interlayer matrix material is further promoted, and the matrix has enough strength.
And thirdly, adding AlSi into the interlayer matrix material, so that the interlayer matrix material is a novel material and mainly has the main functions of promoting the sintering of the Fe-based matrix, improving the brittleness of the matrix material and enabling the matrix to have better wear resistance. The composition of AlSi is AL73Si27, which is a material that is directly available.
The matrix material obtained by adopting the formula and the granularity has the following advantages: (1) the economy, the main component of the interlayer is elementary substance Fe, and the cost is reduced by 35% compared with the traditional iron-based pre-alloyed powder; (2) the cold pressing performance, the cold pressing forming performance and the cold pressing compatibility of the matrix powder are good, and the matrix powder can not crack after cold pressing; (3) the sintering performance, the sintering range is wide, the universality is strong, and the sintering density can be matched with the mainstream formula of a company to achieve better sintering density; (4) the mechanical property, the matrix has good intensity after sintering, can effectively cooperate the abrasion speed of the working layer of the cutter head.
Detailed Description
To make the objects, technical solutions and advantages of the embodiments of the present invention more apparent, the embodiments of the present invention will be described in detail and completely below with reference to specific embodiments of the present invention. All other embodiments, which can be obtained by a person skilled in the art without any inventive step based on the embodiments of the present invention, are within the scope of the present invention. Thus, the detailed description of the embodiments of the present invention provided below is not intended to limit the scope of the invention as claimed, but is merely representative of selected embodiments of the invention. All other embodiments, which can be obtained by a person skilled in the art without any inventive step based on the embodiments of the present invention, are within the scope of the present invention.
The interlayer matrix material comprises the following components in percentage by mass: 85-65% of Fe, 8-15% of Zn, 5-20% of Cu and 2-5% of ALSi. The powder granularity of the interlayer matrix material is 100-500 meshes; the oxygen content of the interlayer matrix material is 1500-.
The invention also relates to a preparation method of the diamond tool bit, which comprises the following steps:
step one, preparing an interlayer matrix material, weighing 85-65% of Fe, 8-15% of Zn, 5-20% of Cu and 2-5% of ALSi powder according to the mass percentage, and uniformly stirring for 45-90 minutes to obtain the uniformly mixed interlayer matrix material;
step two, respectively loading the interlayer matrix material, the first working layer mixture and the second working layer mixture into corresponding hoppers in a multi-layer full-automatic cold press;
step three, sending the mixture of the first working layer into a mold cavity by adopting 200-400KG/cm2The first pressure prepressing is carried out, the prepressed first blank body is left in a die cavity and stays at a proper position, and a cavity filled with interlayer matrix materials is reserved above the first blank body;
step four, feeding the interlayer matrix material into a mold cavity, filling the cavity reserved above the previous blank, and adopting the height of 50-100KG/cm on the basis of the previous pre-pressing pressure2Pressing the interlayer matrix material and the last blank together, and prepressingThe blank body is left in the die cavity and stays at a proper position, and a space for filling the mixture of the second working layer is reserved above the blank body;
step five, the mixture of the second working layer is sent into the mold cavity to fill the reserved cavity, and the height is 50-100KG/cm on the basis of the previous pre-pressing pressure2The second working layer mixture and the last blank are pressed together, the pre-pressed blank is left in a die cavity and stays at a proper position, and a space for filling the next interlayer matrix material is reserved above the blank;
step six, repeating the step four and the step five in sequence, wherein the repetition frequency is 0-N times, N is a natural number, and the prepressing pressure adopted in each step is 50-100KG/cm higher than the prepressing pressure used last time2；
Step seven, the cold pressing of the whole cutter head blank body is completed after demoulding;
and step eight, loading the diamond tool bit into a tray for standby, loading the tray into a die, and sintering to obtain the required diamond tool bit.
As a preferred embodiment, the interlayer matrix mixed material is uniformly stirred by a three-dimensional mixer for 45-90 minutes in the step one.
In a preferred embodiment, the mold is a graphite mold.
The following provides a further description of the advantageous effects of the technical solution of the present embodiment through several sets of examples and comparative examples.
The first embodiment is as follows:
the method for manufacturing the diamond tool bit in the embodiment comprises the following steps:
step one, preparing an interlayer matrix material, weighing 85% of Fe, 8% of Zn, 5% of Cu and 2% of ALSi powder according to the mass percentage, wherein the powder granularity of the interlayer matrix material is 100-500 meshes, the oxygen content of the interlayer matrix material is 1500-3500PPM, and uniformly stirring for 45-90 minutes by adopting a three-dimensional mixer to obtain the uniformly mixed interlayer matrix material;
step two, respectively loading the interlayer matrix material, the first working layer mixture and the second working layer mixture into corresponding hoppers in a multi-layer full-automatic cold press;
step three, the mixture of the first working layer is sent into a mold cavity, and 200-400KG/cm is adopted2The first pressure prepressing is carried out, the prepressed first blank body is left in a die cavity and stays at a proper position, and a cavity filled with interlayer matrix materials is reserved above the first blank body;
step four, feeding the interlayer matrix material into the mold cavity, filling the cavity reserved above the previous blank, and adopting the height of 50-100KG/cm on the basis of the previous pre-pressing pressure2The interlayer matrix material and the last blank are pressed together, the pre-pressed blank is left in a die cavity and stays at a proper position, and a space for filling the mixture of the second working layer is reserved above the blank;
step five, the mixture of the second working layer is sent into the mold cavity to fill the reserved cavity, and the height is 50-100KG/cm on the basis of the previous pre-pressing pressure2The second working layer mixture and the last blank are pressed together, the pre-pressed blank is left in a die cavity and stays at a proper position, and a space for filling the next interlayer matrix material is reserved above the blank;
step six, repeating the step four and the step five in sequence, wherein the repetition frequency is 0-N times, N is a natural number, and the prepressing pressure adopted in each step is 50-100KG/cm higher than the prepressing pressure used last time2；
Step seven, the cold pressing of the whole cutter head blank is completed after demoulding;
and step eight, loading the diamond tool bit into a tray for standby, loading the tray into a graphite die, and sintering to obtain the required diamond tool bit.
Example two:
the method for manufacturing the diamond cutter head in the embodiment comprises the following steps:
step one, preparing an interlayer matrix material, weighing 70% of Fe, 15% of Zn, 10% of Cu and 5% of ALSi powder according to mass percentage, wherein the powder granularity of the interlayer matrix material is 100-500 meshes, the oxygen content of the interlayer matrix material is 1500-3500PPM, and uniformly stirring for 45-90 minutes by adopting a three-dimensional mixer to obtain the uniformly mixed interlayer matrix material;
step two, respectively loading the interlayer matrix material, the first working layer mixture and the second working layer mixture into corresponding hoppers in a multi-layer full-automatic cold press;
step three, the mixture of the first working layer is sent into a mold cavity, and 200-400KG/cm is adopted2The first pressure prepressing is carried out, the prepressed first blank body is left in a die cavity and stays at a proper position, and a cavity filled with interlayer matrix materials is reserved above the first blank body;
step four, feeding the interlayer matrix material into the mold cavity, filling the cavity reserved above the previous blank, and adopting the height of 50-100KG/cm on the basis of the previous pre-pressing pressure2The interlayer matrix material and the last blank are pressed together, the pre-pressed blank is left in a die cavity and stays at a proper position, and a space for filling the mixture of the second working layer is reserved above the blank;
step five, the mixture of the second working layer is sent into the mold cavity to fill the reserved cavity, and the height is 50-100KG/cm on the basis of the previous pre-pressing pressure2The second working layer mixture and the last blank are pressed together, the pre-pressed blank is left in a die cavity and stays at a proper position, and a space for filling the next interlayer matrix material is reserved above the blank;
step six, repeating the step four and the step five in sequence, wherein the repetition frequency is 0-N times, N is a natural number, and the prepressing pressure adopted in each step is 50-100KG/cm higher than the prepressing pressure used last time2；
Step seven, the cold pressing of the whole cutter head blank body is completed after demoulding;
and step eight, loading the diamond tool bit into a tray for standby, loading the tray into a graphite die, and sintering to obtain the required diamond tool bit.
Comparative example one:
the method for manufacturing the diamond cutter head in the comparative example comprises the following steps:
step one, preparing an interlayer matrix material, weighing 50% of Fe, 20% of Zn, 25% of Cu and 5% of ALSi powder according to mass percentage, wherein the powder granularity of the interlayer matrix material is 100-500 meshes, the oxygen content of the interlayer matrix material is 1500-3500PPM, and uniformly stirring for 45-90 minutes by adopting a three-dimensional mixer to obtain the uniformly mixed interlayer matrix material;
step two, respectively loading the interlayer matrix material, the first working layer mixture and the second working layer mixture into corresponding hoppers in a multi-layer full-automatic cold press;
step three, the mixture of the first working layer is sent into a mold cavity, and 200-400KG/cm is adopted2The first pressure prepressing is carried out, the prepressed first blank body is left in a die cavity and stays at a proper position, and a cavity filled with interlayer matrix materials is reserved above the first blank body;
step four, feeding the interlayer matrix material into the mold cavity, filling the cavity reserved above the previous blank, and adopting the height of 50-100KG/cm on the basis of the previous pre-pressing pressure2The interlayer matrix material and the last blank are pressed together, the pre-pressed blank is left in a die cavity and stays at a proper position, and a space for filling the mixture of the second working layer is reserved above the blank;
step five, the mixture of the second working layer is sent into the mold cavity to fill the reserved cavity, and the height is 50-100KG/cm on the basis of the previous pre-pressing pressure2The second working layer mixture and the last blank are pressed together, the pre-pressed blank is left in a die cavity and stays at a proper position, and a space for filling the next interlayer matrix material is reserved above the blank;
step six, repeating the step four and the step five in sequence, wherein the repetition frequency is 0-N times, N is a natural number, and the prepressing pressure adopted in each step is 50-100KG/cm higher than the prepressing pressure used last time2；
Step seven, the cold pressing of the whole cutter head blank body is completed after demoulding;
and step eight, loading the diamond tool bit into a tray for standby, loading the tray into a graphite die, and sintering to obtain the required diamond tool bit.
Comparative example two:
the method for manufacturing the diamond cutter head in the comparative example comprises the following steps:
step one, preparing an interlayer matrix material, weighing 90% of Fe, 3% of Zn, 5% of Cu and 2% of ALSi powder according to mass percentage, wherein the powder granularity of the interlayer matrix material is 100-500 meshes, the oxygen content of the interlayer matrix material is 1500-3500PPM, and uniformly stirring for 45-90 minutes by adopting a three-dimensional mixer to obtain the uniformly mixed interlayer matrix material;
step two, respectively loading the interlayer matrix material, the first working layer mixture and the second working layer mixture into corresponding hoppers in a multi-layer full-automatic cold press;
step three, the mixture of the first working layer is sent into a mold cavity, and 200-400KG/cm is adopted2The first pressure prepressing is carried out, the prepressed first blank body is left in a die cavity and stays at a proper position, and a cavity filled with interlayer matrix materials is reserved above the first blank body;
step four, feeding the interlayer matrix material into the mold cavity, filling the cavity reserved above the previous blank, and adopting the height of 50-100KG/cm on the basis of the previous pre-pressing pressure2The interlayer matrix material and the last blank are pressed together, the pre-pressed blank is left in a die cavity and stays at a proper position, and a space for filling the mixture of the second working layer is reserved above the blank;
step five, the mixture of the second working layer is sent into the mold cavity to fill the reserved cavity, and the height is 50-100KG/cm on the basis of the previous pre-pressing pressure2The second working layer mixture and the last blank are pressed together, the pre-pressed blank is left in a die cavity and stays at a proper position, and a space for filling the next interlayer matrix material is reserved above the blank;
step six, repeating the step four and the step five in sequence, wherein the repetition frequency is 0-N times, N is a natural number, and the prepressing pressure adopted in each step is 50-100KG/cm higher than the prepressing pressure used last time2；
Step seven, the cold pressing of the whole cutter head blank body is completed after demoulding;
and step eight, loading the diamond tool bit into a tray for standby, loading the tray into a graphite die, and sintering to obtain the required diamond tool bit.
Comparative example three:
the method for manufacturing the diamond tool bit in the comparative example comprises the following steps:
step one, preparing an interlayer matrix material, weighing 70% of Fe, 10% of Zn, 10% of Cu and 10% of ALSi powder according to mass percentage, wherein the powder granularity of the interlayer matrix material is 100-500 meshes, the oxygen content of the interlayer matrix material is 1500-3500PPM, and uniformly stirring for 45-90 minutes by adopting a three-dimensional mixer to obtain the uniformly mixed interlayer matrix material;
step two, respectively loading the interlayer matrix material, the first working layer mixture and the second working layer mixture into corresponding hoppers in a multi-layer full-automatic cold press;
step three, the mixture of the first working layer is sent into a mold cavity, and 200-400KG/cm is adopted2The first pressure prepressing is carried out, the prepressed first blank body is left in a die cavity and stays at a proper position, and a cavity filled with interlayer matrix materials is reserved above the first blank body;
step four, feeding the interlayer matrix material into the mold cavity, filling the cavity reserved above the previous blank, and adopting the height of 50-100KG/cm on the basis of the previous pre-pressing pressure2The interlayer matrix material and the last blank are pressed together, the pre-pressed blank is left in a die cavity and stays at a proper position, and a space for filling the mixture of the second working layer is reserved above the blank;
step five, the mixture of the second working layer is sent into the mold cavity to fill the reserved cavity, and the height is 50-100KG/cm on the basis of the previous pre-pressing pressure2The second working layer mixture and the last blank are pressed together, the pre-pressed blank is left in a die cavity and stays at a proper position, and a space for filling the next interlayer matrix material is reserved above the blank;
step six, repeating the step four and the step five in sequence, wherein the repetition frequency is 0-N times, N is a natural number, and the prepressing pressure adopted in each step is 50-100KG/cm higher than the prepressing pressure used last time2；
Step seven, the cold pressing of the whole cutter head blank body is completed after demoulding;
and step eight, loading the diamond tool bit into a tray for standby, loading the tray into a graphite die, and sintering to obtain the required diamond tool bit.
Comparative example four:
the preparation method of the diamond tool bit in the comparative example comprises the following steps:
step one, preparing an interlayer matrix material, weighing 80% of Fe, 9% of Zn, 10% of Cu and 1% of ALSi powder according to the mass percentage, wherein the powder granularity of the interlayer matrix material is 100-500 meshes, the oxygen content of the interlayer matrix material is 1500-3500PPM, and uniformly stirring for 45-90 minutes by adopting a three-dimensional mixer to obtain the uniformly mixed interlayer matrix material;
step two, respectively loading the interlayer matrix material, the first working layer mixture and the second working layer mixture into corresponding hoppers in a multi-layer full-automatic cold press;
step three, the mixture of the first working layer is sent into a mold cavity, and 200-400KG/cm is adopted2The first pressure prepressing is carried out, the prepressed first blank body is left in a die cavity and stays at a proper position, and a cavity filled with interlayer matrix materials is reserved above the first blank body;
step four, feeding the interlayer matrix material into a mold cavity, filling the cavity reserved above the previous blank, and adopting the height of 50-100KG/cm on the basis of the previous pre-pressing pressure2The interlayer matrix material and the last blank are pressed together, the pre-pressed blank is left in a die cavity and stays at a proper position, and a space for filling the mixture of the second working layer is reserved above the blank;
step five, the mixture of the second working layer is sent into the mold cavity to fill the reserved cavity, and the height is 50-100KG/cm on the basis of the previous pre-pressing pressure2The second working layer mixture and the last blank are pressed together, the pre-pressed blank is left in a die cavity and stays at a proper position, and a space for filling the next interlayer matrix material is reserved above the blank;
step six, repeating the step four and the step five in sequence, wherein the repetition frequency is 0-N times, N is a natural number, and the prepressing pressure adopted in each step is 50-100KG/cm higher than the prepressing pressure used last time2；
Step seven, the cold pressing of the whole cutter head blank body is completed after demoulding;
and step eight, loading the diamond tool bit into a tray for standby, loading the tray into a graphite die, and sintering to obtain the required diamond tool bit.
The sharpness and service life of the diamond tips produced in the two examples and the four comparative examples were measured as follows:
TABLE 1 test data for sets of diamond tips produced in examples and comparative examples
The diamond tool bit manufactured by adopting the two proportions has the following properties: the strength of the matrix is 1230 and 1103Mpa respectively, and the density is 98.3 percent and 99.2 percent respectively. The sintering ranges are respectively 840-860 ℃ and 830-850 ℃, and the abrasion speeds are respectively 0.15m/h and 0.18 m/h. It can be seen that the first embodiment and the second embodiment related to the patent have better performance.
The above is only a preferred embodiment of the present invention, and is not intended to limit the present invention, and various modifications and changes may be made to the present invention by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (9)
1. The preparation method of the diamond tool bit is characterized by being prepared from an interlayer matrix material, wherein the interlayer matrix material comprises the following components in percentage by mass: 85-65% of Fe, 8-15% of Zn, 5-20% of Cu and 2-5% of AlSi; also comprises the following steps:
step one, preparing an interlayer matrix material, weighing 85-65% of Fe, 8-15% of Zn, 5-20% of Cu and 2-5% of AlSi powder according to mass percent, and uniformly stirring for 45-90 minutes to obtain the uniformly mixed interlayer matrix material;
step two, respectively loading the interlayer matrix material, the first working layer mixture and the second working layer mixture into corresponding hoppers in a multi-layer full-automatic cold press;
step three, the mixture of the first working layer is sent into a mold cavity, and 200-400KG/cm is adopted2The first pressure prepressing is carried out, the prepressed first blank body is left in a die cavity and stays at a proper position, and a cavity filled with interlayer matrix materials is reserved above the first blank body;
step four, feeding the interlayer matrix material into the mold cavity, filling the cavity reserved above the previous blank, and adopting the height of 50-100KG/cm on the basis of the previous pre-pressing pressure2The interlayer matrix material and the last blank are pressed together, the pre-pressed blank is left in a die cavity and stays at a proper position, and a space for filling the mixture of the second working layer is reserved above the blank;
step five, the mixture of the second working layer is sent into the mold cavity to fill the reserved cavity, and the height is 50-100KG/cm on the basis of the previous pre-pressing pressure2The second working layer mixture and the last blank are pressed together, the pre-pressed blank is left in a die cavity and stays at a proper position, and a space for filling the next interlayer matrix material is reserved above the blank;
step six, repeating the step four and the step five in sequence, wherein the repetition frequency is 0-N times, N is a natural number, and the prepressing pressure adopted in each step is 50-100KG/cm higher than the prepressing pressure used last time2；
Step seven, the cold pressing of the whole cutter head blank body is completed after demoulding;
and step eight, loading the diamond tool bit into a tray for standby, loading the tray into a die, and sintering to obtain the required diamond tool bit.
2. The method for manufacturing a diamond tip according to claim 1, wherein the first step is to uniformly mix the interlayer and matrix mixed material with a three-dimensional mixer for 45 to 90 minutes.
3. The method of claim 1, wherein the mold is a graphite mold.
4. The method for manufacturing the diamond tool bit according to claim 1, wherein the interlayer matrix material comprises the following components in percentage by mass: 85% Fe, 8% Zn, 5% Cu and 2% AlSi.
5. The method for manufacturing the diamond tool bit according to claim 1, wherein the interlayer matrix material comprises the following components in percentage by mass: 70% Fe, 15% Zn, 10% Cu and 5% AlSi.
6. The method for preparing the diamond tool bit as claimed in claim 1, wherein the powder particle size of the interlayer matrix material is 100-500 meshes.
7. The method for preparing the diamond tool bit as claimed in claim 6, wherein the powder particle size of the interlayer matrix material is 200-400 meshes.
8. The method as claimed in claim 1, wherein the interlayer matrix material has an oxygen content of 1500-3500 PPM.
9. The method as claimed in claim 8, wherein the interlayer matrix material has an oxygen content of 2000-3000 PPM.
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Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1669708A (en) * | 2004-03-19 | 2005-09-21 | 中南大学 | Diamond/cubic boron nitride saw blade for cutting metal and fabricating method therefor |
| CN102814746A (en) * | 2012-07-09 | 2012-12-12 | 南京航空航天大学 | Grinding material optimizing and distributing sintered diamond tool and manufacture method thereof |
| CN103878375A (en) * | 2012-12-20 | 2014-06-25 | 北京有色金属研究总院 | Manufacturing method of positioned arranged superhard tool bit |
| CN106180730A (en) * | 2016-07-18 | 2016-12-07 | 泉州众志金刚石工具有限公司 | A kind of preparation method of the novel general saw blade of high performance-price ratio granite |
| CN108097972A (en) * | 2017-12-28 | 2018-06-01 | 福建省泉州市华钻金刚石工具有限公司 | A kind of preparation method of metallic bond cutter head and the diamond disc with the metallic bond cutter head |
| CN108673752A (en) * | 2018-04-02 | 2018-10-19 | 泉州众志新材料科技有限公司 | A kind of diamond segment and its manufacturing process |
| CN109590475A (en) * | 2019-01-09 | 2019-04-09 | 福建省泉州市华钻金刚石工具有限公司 | A kind of preparation method of big cutter head for cutting the big saw blade of high-hardness stone and the big cutter head |
| CN110449588A (en) * | 2019-07-31 | 2019-11-15 | 泉州众志金刚石工具有限公司 | A kind of high life marble cutter head carcass and cutter head production method |
| CN209682644U (en) * | 2019-02-26 | 2019-11-26 | 福建省泉州万龙石业有限公司 | A kind of diamond tool bit for cutting stone material |
| CN111761734A (en) * | 2019-09-05 | 2020-10-13 | 江苏锋泰工具有限公司 | Ceramic cutting saw blade and preparation method thereof |
-
2020
- 2020-10-14 CN CN202011095985.2A patent/CN112238220B/en active Active
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1669708A (en) * | 2004-03-19 | 2005-09-21 | 中南大学 | Diamond/cubic boron nitride saw blade for cutting metal and fabricating method therefor |
| CN102814746A (en) * | 2012-07-09 | 2012-12-12 | 南京航空航天大学 | Grinding material optimizing and distributing sintered diamond tool and manufacture method thereof |
| CN103878375A (en) * | 2012-12-20 | 2014-06-25 | 北京有色金属研究总院 | Manufacturing method of positioned arranged superhard tool bit |
| CN106180730A (en) * | 2016-07-18 | 2016-12-07 | 泉州众志金刚石工具有限公司 | A kind of preparation method of the novel general saw blade of high performance-price ratio granite |
| CN108097972A (en) * | 2017-12-28 | 2018-06-01 | 福建省泉州市华钻金刚石工具有限公司 | A kind of preparation method of metallic bond cutter head and the diamond disc with the metallic bond cutter head |
| CN108673752A (en) * | 2018-04-02 | 2018-10-19 | 泉州众志新材料科技有限公司 | A kind of diamond segment and its manufacturing process |
| CN109590475A (en) * | 2019-01-09 | 2019-04-09 | 福建省泉州市华钻金刚石工具有限公司 | A kind of preparation method of big cutter head for cutting the big saw blade of high-hardness stone and the big cutter head |
| CN209682644U (en) * | 2019-02-26 | 2019-11-26 | 福建省泉州万龙石业有限公司 | A kind of diamond tool bit for cutting stone material |
| CN110449588A (en) * | 2019-07-31 | 2019-11-15 | 泉州众志金刚石工具有限公司 | A kind of high life marble cutter head carcass and cutter head production method |
| CN111761734A (en) * | 2019-09-05 | 2020-10-13 | 江苏锋泰工具有限公司 | Ceramic cutting saw blade and preparation method thereof |
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