CN114029352A - Machining method of polycrystalline wire-drawing die - Google Patents
Machining method of polycrystalline wire-drawing die Download PDFInfo
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- CN114029352A CN114029352A CN202111281890.4A CN202111281890A CN114029352A CN 114029352 A CN114029352 A CN 114029352A CN 202111281890 A CN202111281890 A CN 202111281890A CN 114029352 A CN114029352 A CN 114029352A
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- 238000005491 wire drawing Methods 0.000 title claims abstract description 36
- 238000000034 method Methods 0.000 title abstract description 8
- 238000003754 machining Methods 0.000 title description 14
- 239000000945 filler Substances 0.000 claims abstract description 66
- 239000010432 diamond Substances 0.000 claims abstract description 40
- 229910003460 diamond Inorganic materials 0.000 claims abstract description 37
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 29
- 239000010959 steel Substances 0.000 claims abstract description 29
- 238000010438 heat treatment Methods 0.000 claims abstract description 27
- 238000003672 processing method Methods 0.000 claims abstract description 18
- 238000002156 mixing Methods 0.000 claims abstract description 8
- 239000002994 raw material Substances 0.000 claims abstract description 8
- 238000007514 turning Methods 0.000 claims abstract description 8
- 238000007493 shaping process Methods 0.000 claims description 33
- 238000011049 filling Methods 0.000 claims description 16
- 238000005498 polishing Methods 0.000 claims description 14
- 238000003756 stirring Methods 0.000 claims description 12
- 238000010892 electric spark Methods 0.000 claims description 6
- 238000004519 manufacturing process Methods 0.000 abstract description 7
- 229910052751 metal Inorganic materials 0.000 description 33
- 239000002184 metal Substances 0.000 description 33
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 21
- 229910052802 copper Inorganic materials 0.000 description 16
- 239000010949 copper Substances 0.000 description 16
- 238000005553 drilling Methods 0.000 description 16
- 238000009760 electrical discharge machining Methods 0.000 description 16
- 230000000694 effects Effects 0.000 description 12
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 8
- 239000000919 ceramic Substances 0.000 description 8
- 229910021389 graphene Inorganic materials 0.000 description 8
- 239000000843 powder Substances 0.000 description 8
- 239000000126 substance Substances 0.000 description 8
- 229910045601 alloy Inorganic materials 0.000 description 6
- 239000000956 alloy Substances 0.000 description 6
- 229910052782 aluminium Inorganic materials 0.000 description 4
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 4
- 238000000149 argon plasma sintering Methods 0.000 description 4
- 238000001816 cooling Methods 0.000 description 4
- 238000005260 corrosion Methods 0.000 description 4
- 230000007797 corrosion Effects 0.000 description 4
- 238000007599 discharging Methods 0.000 description 4
- 239000011148 porous material Substances 0.000 description 4
- 238000003763 carbonization Methods 0.000 description 2
- 238000005336 cracking Methods 0.000 description 2
- 238000007731 hot pressing Methods 0.000 description 2
- 238000005245 sintering Methods 0.000 description 2
- WFKWXMTUELFFGS-UHFFFAOYSA-N tungsten Chemical compound [W] WFKWXMTUELFFGS-UHFFFAOYSA-N 0.000 description 2
- ZOKXTWBITQBERF-UHFFFAOYSA-N Molybdenum Chemical compound [Mo] ZOKXTWBITQBERF-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 238000007723 die pressing method Methods 0.000 description 1
- 229910052750 molybdenum Inorganic materials 0.000 description 1
- 239000011733 molybdenum Substances 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 229920002994 synthetic fiber Polymers 0.000 description 1
- 229910052721 tungsten Inorganic materials 0.000 description 1
- 239000010937 tungsten Substances 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21C—MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES OR PROFILES, OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
- B21C3/00—Profiling tools for metal drawing; Combinations of dies and mandrels
- B21C3/18—Making tools by operations not covered by a single other subclass; Repairing
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Metal Extraction Processes (AREA)
- Electrical Discharge Machining, Electrochemical Machining, And Combined Machining (AREA)
Abstract
The invention belongs to the technical field of wire-drawing dies, in particular to a processing method of a polycrystalline wire-drawing die, which comprises the following steps of firstly, preparing raw materials, namely preparing a steel die sleeve blank, a die core and a filler in advance for standby; step two, preparing a die sleeve, namely turning the die sleeve blank by adopting a numerical control lathe to form the die sleeve; step three, mixing the filler, namely adding the filler into a reaction kettle to be uniformly stirred and mixed; and step four, heating, namely heating the die sleeve prepared in the step two by high-frequency heating equipment. According to the processing method of the polycrystalline wire-drawing die, after the die sleeve is heated, the diamond die core is fixed in the middle of the die sleeve through the filler and wrapped well, and the polycrystalline wire-drawing die is not easy to crack in drawing production. The jacket is made of 45# steel, the jacket is embedded by adopting a new process, and the novel polycrystalline diamond mold has the characteristics of ensuring that the mold core is not carbonized, and the mold is high in heat conduction speed and long in service life, so that the problems that the existing polycrystalline mold making mode is easy to crack and carbonize and poor in heat conduction performance, and the service life of the mold is short are solved.
Description
Technical Field
The invention relates to the technical field of wire-drawing dies, in particular to a polycrystalline wire-drawing die processing method.
Background
The wire drawing die is characterized in that a metal wire passes through a die to be gradually reduced to reach the required size, the special die is the wire drawing die, a die core of the wire drawing die is made of natural diamonds and artificial diamonds (the artificial diamonds comprise GE, PCD, synthetic materials and the like), a copper wire drawing die belongs to a flexible wire drawing die, and a hard wire drawing die such as a tungsten wire drawing die is small in compression area and is generally 12-14 degrees. The drawing die comprises a diamond drawing die, a hard alloy drawing die, a plastic drawing die and the like.
The wire-drawing die has wide application, such as high-precision wires used in electronic devices, radars, televisions, instruments, aerospace and the like, and common tungsten wires, molybdenum wires, stainless steel wires, cable wires and various alloy wires are drawn by the diamond wire-drawing die, and the diamond wire-drawing die has extremely strong wear resistance and extremely long service life because natural diamond is used as a raw material. The production process of the wire-drawing die bushing comprises the steps of die pressing, die drawing, turning and the like.
The current traditional polycrystalline molding mode adopts: the wire drawing die is produced in a hot-pressing sintering bushing-laser perforation-ultrasonic shaping-ultrasonic polishing mode, but the wire drawing die produced in the hot-pressing sintering bushing-laser perforation-ultrasonic shaping-ultrasonic polishing mode in actual use has the problems of easiness in cracking, easiness in carbonization and poor heat conducting property, so that the service life of the die is short, and therefore a polycrystalline wire drawing die processing method is needed.
Disclosure of Invention
Based on the technical problems of easy cracking, easy carbonization and poor heat conducting property of the existing polycrystalline die making mode, the invention provides a processing method of a polycrystalline wire-drawing die.
The invention provides a processing method of a polycrystalline wire-drawing die, which comprises the following steps of preparing raw materials, namely preparing a steel die sleeve blank, a die core and a filler in advance for later use;
step two, preparing a die sleeve, namely turning the die sleeve blank by adopting a numerical control lathe to form the die sleeve;
step three, mixing the filler, namely adding the filler into a reaction kettle to be uniformly stirred and mixed;
step four, heating, namely heating the die sleeve prepared in the step two by high-frequency heating equipment;
step five, putting the mold core into a mold, and putting the mold core into a mold sleeve;
filling the filler into a mold, and adding the uniformly stirred and mixed filler into a mold sleeve;
step seven, pressurizing and shaping, namely, fixing the die sleeve through a tool, and pressurizing and shaping through a hydraulic machine;
step eight, processing a die hole, namely processing the die hole through an electric spark perforating machine;
step nine, shaping, namely shaping the surface of the workpiece through a slow-speed wire;
step ten, polishing the die hole, and performing line feeding polishing on the die hole through ultrasonic waves.
Preferably, the steel die sleeve blank in the first step is a 45# steel rod, and the die core is a diamond die core.
Preferably, the formula of the filler in the first step is as follows by weight:
preferably, the stirring speed of the reaction kettle in the third step is 500-.
Preferably, the heating temperature of the die sleeve in the fourth step is 600-620 ℃.
Preferably, in the fifth step, the mold core is inserted into the mold, namely the diamond mold core is placed in the center of the heated mold sleeve.
Preferably, in the sixth step, the filler is filled into the mold, the filler after stirring and mixing is added into the heated mold sleeve and filled between the inner wall of the mold sleeve and the surface of the mold core, and then the mold core is wrapped and preliminarily compacted.
Preferably, in the seventh step, the polycrystalline is well wrapped by the die sleeve by pressing with a 500-ton press.
The beneficial effects of the invention are as follows:
after the die sleeve is heated, the diamond die core is fixed in the middle of the die sleeve through the filler and well wrapped, so that the diamond die core is not easy to crack in drawing production. The jacket is made of 45# steel, the jacket is embedded by adopting a new process, and the novel polycrystalline diamond mold has the characteristics of ensuring that the mold core is not carbonized, and the mold is high in heat conduction speed and long in service life, so that the problems that the existing polycrystalline mold making mode is easy to crack and carbonize and poor in heat conduction performance, and the service life of the mold is short are solved.
Detailed Description
In order to facilitate a better understanding of the invention, the following examples are given to illustrate, but not to limit the scope of the invention.
A processing method of a polycrystalline wire-drawing die comprises the steps of firstly, preparing raw materials, namely preparing a steel die sleeve blank, a die core and a filler in advance for standby;
in the first step, a 45# steel bar is adopted as a steel die sleeve blank, and a die core is a diamond die core;
the formula of the filler in the first step comprises the following components in parts by weight:
step two, preparing a die sleeve, namely turning the die sleeve blank by adopting a numerical control lathe to form the die sleeve;
step three, mixing the filler, namely adding the filler into a reaction kettle to be uniformly stirred and mixed;
the stirring speed of the reaction kettle in the third step is 500 plus 800 revolutions per minute, and the stirring time is 15-30 minutes.
Furthermore, ceramic powder and graphene are added into the filler, the ceramic powder has the characteristics of good chemical stability, good plasticity, high heat-resistant temperature, small density, low ignition loss, good light scattering property and good insulativity, and the graphene has very good heat conduction performance, so that the effect of increasing the heat transfer and heat conduction performance of the die is achieved.
Step four, heating treatment, namely heating the die sleeve prepared in the step two by high-frequency heating equipment, wherein the heating temperature of the die sleeve in the step four is 600-620 ℃.
Step five, putting the mold core into a mold, and putting the mold core into a mold sleeve;
and step five, putting the mold core into a mold, namely putting the diamond mold core into the center of the heated mold sleeve.
Filling the filler into a mold, and adding the uniformly stirred and mixed filler into a mold sleeve;
and step six, filling the filler into the mold, namely adding the stirred and mixed filler into the heated mold sleeve, filling the filler between the inner wall of the mold sleeve and the surface of the mold core, and then wrapping and preliminarily compacting the mold core.
Step seven, pressurizing and shaping, namely, fixing the die sleeve through a tool, and pressurizing and shaping through a hydraulic machine;
and step seven, pressurizing and shaping, wherein a 500-ton press is adopted to pressurize to enable the die sleeve to wrap the polycrystalline.
Step eight, processing a die hole, namely processing the die hole through an electric spark perforating machine;
further, the spark erosion drilling machine is also called as a spark erosion drilling machine, a spark erosion drilling machine and a spark erosion drilling discharge machine, and the working principle is that a thin metal copper pipe (called as an electrode wire) which continuously moves vertically is used as an electrode to carry out pulse spark discharge metal removal forming on a workpiece. Unlike wire cut electric discharge machine and forming machine, the electrode of electric pulse is hollow copper rod, and medium passes through the hole in the copper rod for cooling and discharging chips.
The electrode and the metal discharge to generate high-temperature corrosion metal to achieve the purpose of perforation, and the electrode and the metal discharge machining device are used for machining pores of superhard steel, hard alloy, copper, aluminum and any conductive substance, thereby having the effect of facilitating perforation of the core diamond.
Step nine, shaping, namely shaping the surface of the workpiece through a slow-speed wire;
further, slow-speed wire, also called low-speed wire, is a numerical control machine tool which uses a continuously moving thin metal wire (called as an electrode wire, generally a copper wire) as an electrode to perform pulse spark discharge on a workpiece, generates a high temperature of 6000 ℃ or above, removes metal, and cuts the workpiece. The slow-moving wire machining principle is that a seam gap exists between a wire electrode and a workpiece, metal is removed through continuous discharge, the surface of the die workpiece is conveniently machined into various shapes such as a circle, a square, a triangle and a trapezoid, and therefore the effect of better shaping the die workpiece is achieved.
Step ten, polishing the die hole, and performing line feeding polishing on the die hole through ultrasonic waves.
After the die sleeve is heated, the diamond die core is fixed in the middle of the die sleeve through the filler and well wrapped, so that the diamond die core is not easy to crack in drawing production. The jacket is made of 45# steel, the jacket is embedded by adopting a new process, and the novel polycrystalline diamond mold has the characteristics of ensuring that the mold core is not carbonized, and the mold is high in heat conduction speed and long in service life, so that the problems that the existing polycrystalline mold making mode is easy to crack and carbonize and poor in heat conduction performance, and the service life of the mold is short are solved.
Example one
A processing method of a polycrystalline wire-drawing die comprises the steps of firstly, preparing raw materials, namely preparing a steel die sleeve blank, a die core and a filler in advance for standby;
in the first step, a 45# steel bar is adopted as a steel die sleeve blank, and a die core is a diamond die core;
the formula of the filler in the first step comprises the following components in parts by weight:
step two, preparing a die sleeve, namely turning the die sleeve blank by adopting a numerical control lathe to form the die sleeve;
step three, mixing the filler, namely adding the filler into a reaction kettle to be uniformly stirred and mixed;
in the third step, the stirring speed of the reaction kettle is 500 revolutions per minute, and the stirring time is 30 minutes.
Furthermore, ceramic powder and graphene are added into the filler, the ceramic powder has the characteristics of good chemical stability, good plasticity, high heat-resistant temperature, small density, low ignition loss, good light scattering property and good insulativity, and the graphene has very good heat conduction performance, so that the effect of increasing the heat transfer and heat conduction performance of the die is achieved.
And step four, heating, namely heating the die sleeve prepared in the step two by using high-frequency heating equipment, wherein the heating temperature of the die sleeve in the step four is 600 ℃.
Step five, putting the mold core into a mold, and putting the mold core into a mold sleeve;
and step five, putting the mold core into a mold, namely putting the diamond mold core into the center of the heated mold sleeve.
Filling the filler into a mold, and adding the uniformly stirred and mixed filler into a mold sleeve;
and step six, filling the filler into the mold, namely adding the stirred and mixed filler into the heated mold sleeve, filling the filler between the inner wall of the mold sleeve and the surface of the mold core, and then wrapping and preliminarily compacting the mold core.
Step seven, pressurizing and shaping, namely, fixing the die sleeve through a tool, and pressurizing and shaping through a hydraulic machine;
and step seven, pressurizing and shaping, wherein a 500-ton press is adopted to pressurize to enable the die sleeve to wrap the polycrystalline.
Step eight, processing a die hole, namely processing the die hole through an electric spark perforating machine;
further, the spark erosion drilling machine is also called as a spark erosion drilling machine, a spark erosion drilling machine and a spark erosion drilling discharge machine, and the working principle is that a thin metal copper pipe (called as an electrode wire) which continuously moves vertically is used as an electrode to carry out pulse spark discharge metal removal forming on a workpiece. Unlike wire cut electric discharge machine and forming machine, the electrode of electric pulse is hollow copper rod, and medium passes through the hole in the copper rod for cooling and discharging chips.
The electrode and the metal discharge to generate high-temperature corrosion metal to achieve the purpose of perforation, and the electrode and the metal discharge machining device are used for machining pores of superhard steel, hard alloy, copper, aluminum and any conductive substance, thereby having the effect of facilitating perforation of the core diamond.
Step nine, shaping, namely shaping the surface of the workpiece through a slow-speed wire;
further, slow-speed wire, also called low-speed wire, is a numerical control machine tool which uses a continuously moving thin metal wire (called as an electrode wire, generally a copper wire) as an electrode to perform pulse spark discharge on a workpiece, generates a high temperature of 6000 ℃ or above, removes metal, and cuts the workpiece. The slow-moving wire machining principle is that a seam gap exists between a wire electrode and a workpiece, metal is removed through continuous discharge, the surface of the die workpiece is conveniently machined into various shapes such as a circle, a square, a triangle and a trapezoid, and therefore the effect of better shaping the die workpiece is achieved.
Step ten, polishing the die hole, and performing line feeding polishing on the die hole through ultrasonic waves.
After the die sleeve is heated, the diamond die core is fixed in the middle of the die sleeve through the filler and well wrapped, so that the diamond die core is not easy to crack in drawing production. The jacket is made of 45# steel, the jacket is embedded by adopting a new process, and the novel polycrystalline diamond mold has the characteristics of ensuring that the mold core is not carbonized, and the mold is high in heat conduction speed and long in service life, so that the problems that the existing polycrystalline mold making mode is easy to crack and carbonize and poor in heat conduction performance, and the service life of the mold is short are solved.
Example two
A processing method of a polycrystalline wire-drawing die comprises the steps of firstly, preparing raw materials, namely preparing a steel die sleeve blank, a die core and a filler in advance for standby;
in the first step, a 45# steel bar is adopted as a steel die sleeve blank, and a die core is a diamond die core;
the formula of the filler in the first step comprises the following components in parts by weight:
step two, preparing a die sleeve, namely turning the die sleeve blank by adopting a numerical control lathe to form the die sleeve;
step three, mixing the filler, namely adding the filler into a reaction kettle to be uniformly stirred and mixed;
the stirring speed of the reaction kettle in the third step is 600 revolutions per minute, and the stirring time is 25 minutes.
Furthermore, ceramic powder and graphene are added into the filler, the ceramic powder has the characteristics of good chemical stability, good plasticity, high heat-resistant temperature, small density, low ignition loss, good light scattering property and good insulativity, and the graphene has very good heat conduction performance, so that the effect of increasing the heat transfer and heat conduction performance of the die is achieved.
And step four, heating, namely heating the die sleeve prepared in the step two by using high-frequency heating equipment, wherein the heating temperature of the die sleeve in the step four is 610 ℃.
Step five, putting the mold core into a mold, and putting the mold core into a mold sleeve;
and step five, putting the mold core into a mold, namely putting the diamond mold core into the center of the heated mold sleeve.
Filling the filler into a mold, and adding the uniformly stirred and mixed filler into a mold sleeve;
and step six, filling the filler into the mold, namely adding the stirred and mixed filler into the heated mold sleeve, filling the filler between the inner wall of the mold sleeve and the surface of the mold core, and then wrapping and preliminarily compacting the mold core.
Step seven, pressurizing and shaping, namely, fixing the die sleeve through a tool, and pressurizing and shaping through a hydraulic machine;
and step seven, pressurizing and shaping, wherein a 500-ton press is adopted to pressurize to enable the die sleeve to wrap the polycrystalline.
Step eight, processing a die hole, namely processing the die hole through an electric spark perforating machine;
further, the spark erosion drilling machine is also called as a spark erosion drilling machine, a spark erosion drilling machine and a spark erosion drilling discharge machine, and the working principle is that a thin metal copper pipe (called as an electrode wire) which continuously moves vertically is used as an electrode to carry out pulse spark discharge metal removal forming on a workpiece. Unlike wire cut electric discharge machine and forming machine, the electrode of electric pulse is hollow copper rod, and medium passes through the hole in the copper rod for cooling and discharging chips.
The electrode and the metal discharge to generate high-temperature corrosion metal to achieve the purpose of perforation, and the electrode and the metal discharge machining device are used for machining pores of superhard steel, hard alloy, copper, aluminum and any conductive substance, thereby having the effect of facilitating perforation of the core diamond.
Step nine, shaping, namely shaping the surface of the workpiece through a slow-speed wire;
further, slow-speed wire, also called low-speed wire, is a numerical control machine tool which uses a continuously moving thin metal wire (called as an electrode wire, generally a copper wire) as an electrode to perform pulse spark discharge on a workpiece, generates a high temperature of 6000 ℃ or above, removes metal, and cuts the workpiece. The slow-moving wire machining principle is that a seam gap exists between a wire electrode and a workpiece, metal is removed through continuous discharge, the surface of the die workpiece is conveniently machined into various shapes such as a circle, a square, a triangle and a trapezoid, and therefore the effect of better shaping the die workpiece is achieved.
Step ten, polishing the die hole, and performing line feeding polishing on the die hole through ultrasonic waves.
After the die sleeve is heated, the diamond die core is fixed in the middle of the die sleeve through the filler and well wrapped, so that the diamond die core is not easy to crack in drawing production. The jacket is made of 45# steel, the jacket is embedded by adopting a new process, and the novel polycrystalline diamond mold has the characteristics of ensuring that the mold core is not carbonized, and the mold is high in heat conduction speed and long in service life, so that the problems that the existing polycrystalline mold making mode is easy to crack and carbonize and poor in heat conduction performance, and the service life of the mold is short are solved.
EXAMPLE III
A processing method of a polycrystalline wire-drawing die comprises the steps of firstly, preparing raw materials, namely preparing a steel die sleeve blank, a die core and a filler in advance for standby;
in the first step, a 45# steel bar is adopted as a steel die sleeve blank, and a die core is a diamond die core;
the formula of the filler in the first step comprises the following components in parts by weight:
step two, preparing a die sleeve, namely turning the die sleeve blank by adopting a numerical control lathe to form the die sleeve;
step three, mixing the filler, namely adding the filler into a reaction kettle to be uniformly stirred and mixed;
the stirring speed of the reaction kettle in the third step is 800 revolutions per minute, and the stirring time is 15 minutes.
Furthermore, ceramic powder and graphene are added into the filler, the ceramic powder has the characteristics of good chemical stability, good plasticity, high heat-resistant temperature, small density, low ignition loss, good light scattering property and good insulativity, and the graphene has very good heat conduction performance, so that the effect of increasing the heat transfer and heat conduction performance of the die is achieved.
And step four, heating, namely heating the die sleeve prepared in the step two by using high-frequency heating equipment, wherein the heating temperature of the die sleeve in the step four is 620 ℃.
Step five, putting the mold core into a mold, and putting the mold core into a mold sleeve;
and step five, putting the mold core into a mold, namely putting the diamond mold core into the center of the heated mold sleeve.
Filling the filler into a mold, and adding the uniformly stirred and mixed filler into a mold sleeve;
and step six, filling the filler into the mold, namely adding the stirred and mixed filler into the heated mold sleeve, filling the filler between the inner wall of the mold sleeve and the surface of the mold core, and then wrapping and preliminarily compacting the mold core.
Step seven, pressurizing and shaping, namely, fixing the die sleeve through a tool, and pressurizing and shaping through a hydraulic machine;
and step seven, pressurizing and shaping, wherein a 500-ton press is adopted to pressurize to enable the die sleeve to wrap the polycrystalline.
Step eight, processing a die hole, namely processing the die hole through an electric spark perforating machine;
further, the spark erosion drilling machine is also called as a spark erosion drilling machine, a spark erosion drilling machine and a spark erosion drilling discharge machine, and the working principle is that a thin metal copper pipe (called as an electrode wire) which continuously moves vertically is used as an electrode to carry out pulse spark discharge metal removal forming on a workpiece. Unlike wire cut electric discharge machine and forming machine, the electrode of electric pulse is hollow copper rod, and medium passes through the hole in the copper rod for cooling and discharging chips.
The electrode and the metal discharge to generate high-temperature corrosion metal to achieve the purpose of perforation, and the electrode and the metal discharge machining device are used for machining pores of superhard steel, hard alloy, copper, aluminum and any conductive substance, thereby having the effect of facilitating perforation of the core diamond.
Step nine, shaping, namely shaping the surface of the workpiece through a slow-speed wire;
further, slow-speed wire, also called low-speed wire, is a numerical control machine tool which uses a continuously moving thin metal wire (called as an electrode wire, generally a copper wire) as an electrode to perform pulse spark discharge on a workpiece, generates a high temperature of 6000 ℃ or above, removes metal, and cuts the workpiece. The slow-moving wire machining principle is that a seam gap exists between a wire electrode and a workpiece, metal is removed through continuous discharge, the surface of the die workpiece is conveniently machined into various shapes such as a circle, a square, a triangle and a trapezoid, and therefore the effect of better shaping the die workpiece is achieved.
Step ten, polishing the die hole, and performing line feeding polishing on the die hole through ultrasonic waves.
After the die sleeve is heated, the diamond die core is fixed in the middle of the die sleeve through the filler and well wrapped, so that the diamond die core is not easy to crack in drawing production. The jacket is made of 45# steel, the jacket is embedded by adopting a new process, and the novel polycrystalline diamond mold has the characteristics of ensuring that the mold core is not carbonized, and the mold is high in heat conduction speed and long in service life, so that the problems that the existing polycrystalline mold making mode is easy to crack and carbonize and poor in heat conduction performance, and the service life of the mold is short are solved.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and the technical solutions and the inventive concepts thereof according to the present invention should be equivalent or changed within the scope of the present invention.
Claims (8)
1. A polycrystalline wire-drawing die processing method is characterized in that:
preparing raw materials, namely preparing a steel die sleeve blank, a die core and a filler in advance for later use;
step two, preparing a die sleeve, namely turning the die sleeve blank by adopting a numerical control lathe to form the die sleeve;
step three, mixing the filler, namely adding the filler into a reaction kettle to be uniformly stirred and mixed;
step four, heating, namely heating the die sleeve prepared in the step two by high-frequency heating equipment;
step five, putting the mold core into a mold, and putting the mold core into a mold sleeve;
filling the filler into a mold, and adding the uniformly stirred and mixed filler into a mold sleeve;
step seven, pressurizing and shaping, namely, fixing the die sleeve through a tool, and pressurizing and shaping through a hydraulic machine;
step eight, processing a die hole, namely processing the die hole through an electric spark perforating machine;
step nine, shaping, namely shaping the surface of the workpiece through a slow-speed wire;
step ten, polishing the die hole, and performing line feeding polishing on the die hole through ultrasonic waves.
2. The polycrystalline wire-drawing die processing method according to claim 1, wherein: in the first step, the steel die sleeve blank adopts a No. 45 steel bar, and the die core is a diamond die core.
3. The polycrystalline wire-drawing die processing method according to claim 1, wherein: the formula of the filler in the first step comprises the following components in parts by weight:
4. the polycrystalline wire-drawing die processing method according to claim 1, wherein: the stirring speed of the reaction kettle in the third step is 500-800 rpm, and the stirring time is 15-30 minutes.
5. The polycrystalline wire-drawing die processing method according to claim 1, wherein: in the fourth step, the heating temperature of the die sleeve is 600-620 ℃.
6. The polycrystalline wire-drawing die processing method according to claim 2, wherein: and in the step five, the mold core is inserted into the mold, namely the diamond mold core is placed in the center of the heated mold sleeve.
7. The polycrystalline wire-drawing die processing method according to claim 1, wherein: and sixthly, filling the filler into the mold, namely adding the stirred and mixed filler into the heated mold sleeve, filling the filler between the inner wall of the mold sleeve and the surface of the mold core, and then wrapping and preliminarily compacting the mold core.
8. The polycrystalline wire-drawing die processing method according to claim 1, wherein: and step seven, pressurizing and shaping, wherein a 500-ton press is adopted to pressurize to enable the die sleeve to wrap the polycrystalline.
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| CN202111281890.4A CN114029352A (en) | 2021-11-01 | 2021-11-01 | Machining method of polycrystalline wire-drawing die |
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| CN (1) | CN114029352A (en) |
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| US4129052A (en) * | 1977-10-13 | 1978-12-12 | Fort Wayne Wire Die, Inc. | Wire drawing die and method of making the same |
| CN201862646U (en) * | 2010-05-10 | 2011-06-15 | 高宝鑫 | Insert bush for polycrystalline diamond wire drawing die |
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| EP2796218A1 (en) * | 2013-04-24 | 2014-10-29 | Ceratizit Italia S.p.A. | Drawing die tool and method of forming such a drawing die tool |
| CN106181225A (en) * | 2016-08-30 | 2016-12-07 | 无锡通用钢绳有限公司 | A kind of automatic bushing device of drawing die |
| CN109365554A (en) * | 2018-12-14 | 2019-02-22 | 浙江金平拉丝模有限公司 | The production technology of diamond wire bus wire-drawing die |
| CN110252834A (en) * | 2019-07-27 | 2019-09-20 | 河南恒星科技股份有限公司 | Pressure mould manufacture heat treatment apparatus and treatment process |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| US4129052A (en) * | 1977-10-13 | 1978-12-12 | Fort Wayne Wire Die, Inc. | Wire drawing die and method of making the same |
| CN201862646U (en) * | 2010-05-10 | 2011-06-15 | 高宝鑫 | Insert bush for polycrystalline diamond wire drawing die |
| CN102671986A (en) * | 2012-05-16 | 2012-09-19 | 天长市天屹模具科技发展有限公司 | Manufacturing process of wire drawing die |
| EP2796218A1 (en) * | 2013-04-24 | 2014-10-29 | Ceratizit Italia S.p.A. | Drawing die tool and method of forming such a drawing die tool |
| CN106181225A (en) * | 2016-08-30 | 2016-12-07 | 无锡通用钢绳有限公司 | A kind of automatic bushing device of drawing die |
| CN109365554A (en) * | 2018-12-14 | 2019-02-22 | 浙江金平拉丝模有限公司 | The production technology of diamond wire bus wire-drawing die |
| CN110252834A (en) * | 2019-07-27 | 2019-09-20 | 河南恒星科技股份有限公司 | Pressure mould manufacture heat treatment apparatus and treatment process |
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