CN110899799A - Tungsten steel milling cutter for horizontal machining center and preparation method thereof - Google Patents
Tungsten steel milling cutter for horizontal machining center and preparation method thereof Download PDFInfo
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- CN110899799A CN110899799A CN201911259824.XA CN201911259824A CN110899799A CN 110899799 A CN110899799 A CN 110899799A CN 201911259824 A CN201911259824 A CN 201911259824A CN 110899799 A CN110899799 A CN 110899799A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23C—MILLING
- B23C5/00—Milling-cutters
- B23C5/02—Milling-cutters characterised by the shape of the cutter
- B23C5/10—Shank-type cutters, i.e. with an integral shaft
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23P—METAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
- B23P15/00—Making specific metal objects by operations not covered by a single other subclass or a group in this subclass
- B23P15/28—Making specific metal objects by operations not covered by a single other subclass or a group in this subclass cutting tools
- B23P15/34—Making specific metal objects by operations not covered by a single other subclass or a group in this subclass cutting tools milling cutters
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Abstract
The invention relates to the technical field of tungsten steel milling cutters and discloses a tungsten steel milling cutter for a horizontal machining center. According to the tungsten steel milling cutter for the horizontal machining center and the preparation method thereof, in the preparation process, the high-pressure inert gas added in the second step can accelerate the liquid drying speed during temperature rise drying, so that granular powder can be produced more quickly, the preparation time is shortened, the cutting fluid prepared in the fourth step is used in the grinding process of the tungsten steel milling cutter, the accuracy and the surface quality in the grinding process can be improved, the nano titanium nitride coating used in the coating treatment process can improve the quality of the cutter, the product can meet the requirements of machining of a plurality of materials, and the competitiveness of enterprises is enhanced.
Description
Technical Field
The invention relates to the technical field of tungsten steel milling cutters, in particular to a tungsten steel milling cutter for a horizontal machining center and a preparation method thereof.
Background
The tungsten steel milling cutter is a cutting tool made of tungsten steel, which is mainly used for a numerical control machining center and a CNC engraving machine generally, and can also be arranged on a common milling machine to process a plurality of harder and uncomplicated heat treatment materials, the tungsten steel milling cutter is widely applied and used for high-speed processing, the hardness of the tungsten steel milling cutter is Vickers 10K, which is inferior to diamond, because the tungsten steel milling cutter has the characteristic of being not easily worn, is brittle and hard and is not afraid of annealing, the price of the tungsten steel milling cutter is more expensive than that of the common milling cutter, is proportional to the length and the diameter of the tungsten steel milling cutter, the tungsten steel milling cutter is distinguished according to the size of grains, the hard alloys can be divided into common hard alloys, fine grain hard alloys and ultra-fine grain hard alloys, the hard alloys can be divided into tungsten carbide-based hard alloys and titanium carbide-based hard alloys according to the main chemical components, the hard alloys can be divided into tungsten carbide-based hard alloys and titanium carbide-based hard alloys, the tungsten carbide, they have advantages and disadvantages, and the main components are tungsten carbide (WC), titanium carbide (Tic), niobium carbide (NbC) and other common metal bonding phases are Co, and the titanium carbide-based hard alloy is a hard alloy taking Tic as a main component, and common metal bonding phases are Mo and Ni.
In practical application, because the traditional preparation method is adopted, the prepared tungsten steel milling cutter has high surface quality and dimensional precision and stability, and the product percent of pass is influenced, meanwhile, when the traditional tungsten steel milling cutter is used for processing various dies by a horizontal processing center, the performance of the traditional tungsten steel milling cutter is defective, the traditional tungsten steel milling cutter is easily damaged, the processing process is high-speed operation, accidents happen, and the safety of workers are easily threatened, and certain hidden dangers exist in application, so the tungsten steel milling cutter for the horizontal processing center and the preparation method thereof are provided to solve the problems.
Disclosure of Invention
Technical problem to be solved
Aiming at the defects of the prior art, the invention provides the tungsten steel milling cutter for the horizontal machining center and the preparation method thereof, which have the advantages of high quality, convenience in use and the like, and solve the problems that the tungsten steel milling cutter for the horizontal machining center in the market and the preparation method thereof are high in surface quality, high in size precision and high in stability, influence the product qualification rate, and meanwhile, when the existing tungsten steel milling cutter is used for machining various dies in the horizontal machining center, the performance of the existing tungsten steel milling cutter is easy to damage if a flaw exists, the machining process is high-speed operation, the safety of workers is easy to threaten if an accident occurs, and a certain hidden danger exists in application.
(II) technical scheme
In order to achieve the purpose of high quality and convenient use, the invention provides the following technical scheme: the utility model provides a tungsten steel milling cutter for horizontal machining center, includes the handle of a knife, the outside cover of handle of a knife is equipped with the antiskid cover, the right side fixed mounting of handle of a knife has the protecting crust, the right side fixed mounting of protecting crust has tungsten steel milling cutter body, the sword groove has been seted up to the surface of tungsten steel milling cutter body.
Preferably, the anti-skidding sleeve is a rubber sleeve, the thickness of the rubber sleeve is between one millimeter and two millimeters, and the length of the anti-skidding sleeve is smaller than that of the cutter handle.
Preferably, the height of the protective shell is greater than that of the anti-skid sleeve, and the cutter grooves are distributed on the outer portion of the tungsten steel milling cutter body in a surrounding mode.
Preferably, the length of the tungsten steel milling cutter body is equal to that of the cutter handle, and the thickness of the protective shell is between two millimeters and four millimeters.
Preferably, the feed comprises the following raw materials in parts by weight: 10-12 parts of tungsten carbide, 6-8 parts of cobalt, 1-4 parts of paraffin wax molding, 3-5 parts of sodium benzoate, 1-2 parts of sodium dodecyl sulfate, 2-4 parts of naphthenic oil, 3-5 parts of lignosulfonate and 1-3 parts of boric acid.
The invention provides a preparation method of a tungsten steel milling cutter for a horizontal machining center, which comprises the following steps:
1) putting 10-12 parts of tungsten carbide, 6-8 parts of cobalt and 1-4 parts of paraffin forming agent into a mixer, uniformly mixing the powder by the mixer at the temperature of 80-100 ℃, and mixing for 3 hours to form liquid;
2) spraying the liquid prepared in the step 1 into a granulator through a nozzle, introducing 6-10 MPa of high-pressure inert gas, raising the temperature in the granulator to 200-300 ℃, keeping the temperature for 0.5-1h, drying the liquid to generate granular powder, filling the granular powder into a die of a press, and applying pressure to form a blank rod;
3) placing the blank rod prepared in the step 2 into a sintering furnace for sintering, raising the temperature in the sintering furnace to 800 ℃, continuing for 0.5-1h, and sintering to form a hard alloy tungsten steel rod;
4) taking a 100mL glass dish, putting 80mL deionized water, sequentially adding 3-5 parts of sodium benzoate, 1-2 parts of sodium dodecyl sulfate and 2-4 parts of naphthenic oil, stirring uniformly, slowly adding 3-5 parts of lignosulfonate and 1-3 parts of boric acid, and stirring uniformly to obtain a grinding cutting fluid;
5) taking the hard alloy tungsten steel bar prepared in the step 3 as a blank bar, performing cylindrical grinding, heat treatment, acid washing and groove rolling on the blank bar by using a lathe, performing light wave heating by using the grinding cutting fluid in the step 4 in the grinding and cutting process, eliminating thermal stress, and preparing a rough milling cutter after finishing processing;
6) passivating and polishing the rough milling cutter prepared in the step 5;
7) coating the passivated milling cutter in the step 6, and coating the passivated milling cutter surface by using a coating;
8) and (4) putting the milling cutter coated in the step (7) into a sintering furnace again for sintering, wherein the internal temperature of the sintering furnace is increased to 260-350 ℃, and the formed cutter after sintering after 0.5-1h is the tungsten steel milling cutter.
Preferably, when the blank bar is used for cutting the groove, the helix angle of a milling cutter needing to be cut is 35 degrees, the front angle of the milling cutter is 12-14 degrees, and the rear angle of the milling cutter is 10-12 degrees.
Preferably, the surface of the cutting edge is passivated at the time of the passivation treatment to form a passivated surface of 2 μm or less and 2 μm or less.
Preferably, in the process of coating the milling cutter, the coating is a nano titanium nitride coating.
(III) advantageous effects
Compared with the prior art, the invention provides a tungsten steel milling cutter for a horizontal machining center and a preparation method thereof, and the tungsten steel milling cutter has the following beneficial effects:
1. according to the tungsten steel milling cutter for the horizontal machining center and the preparation method thereof, in the preparation process, the high-pressure inert gas added in the second step can accelerate the liquid drying speed during heating and drying, so that granular powder is produced more quickly, the preparation time is shortened, the productivity of an enterprise is improved, and the competitiveness of the enterprise is enhanced.
2. According to the tungsten steel milling cutter for the horizontal machining center and the preparation method thereof, the cutting fluid prepared in the fourth step is used in the grinding process of the tungsten steel milling cutter, so that the precision and the surface quality in the grinding process can be improved, the nano titanium nitride coating used in the coating treatment process can improve the quality of the cutter, the quality and the usability of the cutter are improved, the product can meet the requirements of machining of a plurality of materials, and the competitiveness of an enterprise is enhanced.
Drawings
Fig. 1 is a front view of a tungsten steel milling cutter for a horizontal machining center and a manufacturing method thereof according to the present invention.
In the figure: 1 handle of a knife, 2 antiskid cover, 3 protecting crust, 4 tungsten steel milling cutter bodies, 5 sword grooves.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to the figure I, the invention discloses a tungsten steel milling cutter for a horizontal machining center, which comprises a cutter handle 1, wherein an anti-slip sleeve 2 is sleeved outside the cutter handle 1, the anti-slip sleeve 2 is a rubber sleeve, the thickness of the rubber sleeve 2 ranges from one millimeter to two millimeters, the length of the anti-slip sleeve 2 is smaller than that of the cutter handle 1, a protective shell 3 is fixedly installed on the right side of the cutter handle 1, a tungsten steel milling cutter body 4 is fixedly installed on the right side of the protective shell 3, the length of the tungsten steel milling cutter body 4 is equal to that of the cutter handle 1, the thickness of the protective shell 3 ranges from two millimeters to four millimeters, a cutter groove 5 is formed in the outer surface of the tungsten steel milling cutter body 4, the height of the protective shell 3 is larger than that of the anti-slip sleeve 2, and the cutter grooves 5.
The first embodiment is as follows:
a tungsten steel milling cutter for a horizontal machining center comprises the following raw materials in parts by weight: 10 parts of tungsten carbide, 6 parts of cobalt, 1 part of paraffin wax molding, 3 parts of sodium benzoate, 1 part of sodium dodecyl sulfate, 2 parts of naphthenic oil, 3 parts of lignosulfonate and 1 part of boric acid.
The invention provides a preparation method of a tungsten steel milling cutter for a horizontal machining center, which comprises the following steps:
1) putting 10 parts of tungsten carbide, 6 parts of cobalt and 1 part of paraffin forming agent into a mixer, wherein the temperature in the mixer is 80 ℃, uniformly mixing the powder by the mixer, and mixing for 3 hours to form liquid;
2) spraying the liquid prepared in the step 1 into a granulator through a nozzle, introducing 6MPa of high-pressure inert gas, raising the temperature in the granulator to 200 ℃, keeping the temperature for 0.5h, drying the liquid to generate granular powder, filling the granular powder into a die of a press, and applying pressure to form a billet;
3) putting the blank rod prepared in the step 2 into a sintering furnace for sintering, raising the temperature in the sintering furnace to 800 ℃, and continuing for 0.5h to sinter to form a hard alloy tungsten steel rod;
4) taking a 100mL glass vessel, putting 80mL deionized water, sequentially adding 3 parts of sodium benzoate, 1 part of sodium dodecyl sulfate and 2 parts of naphthenic oil, uniformly stirring, slowly adding 3 parts of lignosulfonate and 1 part of boric acid, and sufficiently and uniformly stirring to prepare grinding cutting fluid;
5) taking the hard alloy tungsten steel bar prepared in the step 3 as a blank bar, performing cylindrical grinding, heat treatment, acid washing and groove rolling on the blank bar by using a lathe, performing light wave heating by using the grinding cutting fluid in the step 4 in the grinding and cutting process, eliminating thermal stress, and preparing a rough milling cutter after finishing processing, wherein when the blank bar is subjected to the groove cutting process, the helical angle of the milling cutter needing to be cut is 35 degrees, the front angle of the milling cutter is 12 degrees, and the rear angle of the milling cutter is 10 degrees;
6) passivating and polishing the rough milling cutter prepared in the step 5, wherein a passivated surface of 2 micrometers and below 2 micrometers is formed on the surface of the cutting edge during passivation;
7) coating the milling cutter subjected to passivation treatment in the step 6 with a coating, and coating the surface of the milling cutter subjected to passivation treatment with the coating, wherein the coating is a nano titanium nitride coating in the coating process of the milling cutter;
8) and (4) putting the milling cutter coated in the step (7) into a sintering furnace again for sintering, wherein the internal temperature of the sintering furnace is increased to 260 ℃, and the formed cutter after sintering after 0.5h is the tungsten steel milling cutter.
The novel tungsten steel milling cutter prepared according to the formula and the process has low manufacturing cost, and is fast in manufacturing speed due to small preparation proportion, so that the preparation efficiency of the novel tungsten steel milling cutter is improved, and the novel tungsten steel milling cutter can be used as a general machine tool.
Example two:
a tungsten steel milling cutter for a horizontal machining center comprises the following raw materials in parts by weight: 12 parts of tungsten carbide, 8 parts of cobalt, 4 parts of paraffin molding, 5 parts of sodium benzoate, 2 parts of sodium dodecyl sulfate, 4 parts of naphthenic oil, 5 parts of lignosulfonate and 3 parts of boric acid.
The invention provides a preparation method of a tungsten steel milling cutter for a horizontal machining center, which comprises the following steps:
1) putting 12 parts of tungsten carbide, 8 parts of cobalt and 4 parts of paraffin forming agent into a mixer, wherein the temperature in the mixer is 100 ℃, uniformly mixing the powder by the mixer, and mixing for 3 hours to form liquid;
2) spraying the liquid prepared in the step 1 into a granulator through a nozzle, introducing high-pressure inert gas of 10MPa, raising the temperature in the granulator to 300 ℃, keeping the temperature for 1 hour, drying the liquid to generate granular powder, filling the granular powder into a die of a press, and applying pressure to form a billet;
3) putting the blank rod prepared in the step 2 into a sintering furnace for sintering, raising the temperature in the sintering furnace to 800 ℃, and continuing for 1h to sinter to form a hard alloy tungsten steel rod;
4) taking a 100mL glass vessel, putting 80mL deionized water, sequentially adding 5 parts of sodium benzoate, 2 parts of sodium dodecyl sulfate and 4 parts of naphthenic oil, uniformly stirring, slowly adding 5 parts of lignosulfonate and 3 parts of boric acid, and sufficiently and uniformly stirring to prepare grinding cutting fluid;
5) taking the hard alloy tungsten steel bar prepared in the step 3 as a blank bar, performing cylindrical grinding, heat treatment, acid washing and groove rolling on the blank bar by using a lathe, performing light wave heating by using the grinding cutting fluid obtained in the step 4 in the grinding and cutting process, eliminating thermal stress, and preparing a rough milling cutter after finishing processing, wherein when the blank bar is subjected to the groove cutting process, the helical angle of the milling cutter needing to be cut is 35 degrees, the front angle of the milling cutter is 14 degrees, and the rear angle of the milling cutter is 12 degrees;
6) passivating and polishing the rough milling cutter prepared in the step 5, wherein a passivated surface of 2 micrometers and below 2 micrometers is formed on the surface of the cutting edge during passivation;
7) coating the milling cutter subjected to passivation treatment in the step 6 with a coating, and coating the surface of the milling cutter subjected to passivation treatment with the coating, wherein the coating is a nano titanium nitride coating in the coating process of the milling cutter;
8) and (4) putting the milling cutter coated in the step (7) into a sintering furnace again for sintering, wherein the internal temperature of the sintering furnace is raised to 350 ℃, and the formed cutter after sintering after 1h is the tungsten steel milling cutter.
The novel tungsten steel milling cutter prepared according to the formula and the process has excellent performance and quality, is suitable for most machine beds, and improves the competitiveness of enterprises.
In summary, according to the tungsten steel milling cutter for the horizontal machining center and the preparation method thereof, in the preparation process, the high-pressure inert gas added in the second step can accelerate the liquid drying speed during the temperature rise drying, so that the granular powder is produced more quickly, the preparation time is shortened, the productivity of an enterprise is improved, and the competitiveness of the enterprise is enhanced.
It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (9)
1. The utility model provides a tungsten steel milling cutter for horizontal machining center, includes handle of a knife (1), its characterized in that: the outside cover of handle of a knife (1) is equipped with antiskid cover (2), the right side fixed mounting of handle of a knife (1) has protecting crust (3), the right side fixed mounting of protecting crust (3) has tungsten steel milling cutter body (4), sword groove (5) have been seted up to the surface of tungsten steel milling cutter body (4).
2. The tungsten steel milling cutter for a horizontal machining center according to claim 1, wherein: the anti-skidding sleeve (2) is a rubber sleeve, the thickness of the rubber sleeve (2) is one millimeter to two millimeters, and the length of the anti-skidding sleeve (2) is smaller than that of the knife handle (1).
3. The tungsten steel milling cutter for a horizontal machining center according to claim 1, wherein: the height of the protective shell (3) is greater than that of the anti-skid sleeve (2), and the cutter grooves (5) are distributed outside the tungsten steel milling cutter body (4) in a surrounding mode.
4. The tungsten steel milling cutter for a horizontal machining center according to claim 1, wherein: the length of the tungsten steel milling cutter body (4) is equal to that of the cutter handle (1), and the thickness of the protective shell (3) is two millimeters to four millimeters.
5. The tungsten steel milling cutter for a horizontal machining center according to claim 1, wherein: the material comprises the following raw materials in parts by weight: 10-12 parts of tungsten carbide, 6-8 parts of cobalt, 1-4 parts of paraffin wax molding, 3-5 parts of sodium benzoate, 1-2 parts of sodium dodecyl sulfate, 2-4 parts of naphthenic oil, 3-5 parts of lignosulfonate and 1-3 parts of boric acid.
6. A preparation method of a tungsten steel milling cutter for a horizontal machining center is characterized by comprising the following steps: the method comprises the following steps:
1) putting 10-12 parts of tungsten carbide, 6-8 parts of cobalt and 1-4 parts of paraffin forming agent into a mixer, uniformly mixing the powder by the mixer at the temperature of 80-100 ℃, and mixing for 3 hours to form liquid;
2) spraying the liquid prepared in the step (1) into a granulator through a nozzle, introducing 6-10 MPa of high-pressure inert gas, raising the temperature in the granulator to 200-300 ℃, keeping the temperature for 0.5-1h, drying the liquid to generate granular powder, filling the granular powder into a die of a press, and applying pressure to form a blank rod;
3) putting the blank rod prepared in the step (2) into a sintering furnace for sintering, raising the temperature in the sintering furnace to 800 ℃, and continuing for 0.5-1h to sinter to form a hard alloy tungsten steel rod;
4) taking a 100mL glass dish, putting 80mL deionized water, sequentially adding 3-5 parts of sodium benzoate, 1-2 parts of sodium dodecyl sulfate and 2-4 parts of naphthenic oil, stirring uniformly, slowly adding 3-5 parts of lignosulfonate and 1-3 parts of boric acid, and stirring uniformly to obtain a grinding cutting fluid;
5) taking the hard alloy tungsten steel bar prepared in the step (3) as a blank bar, performing cylindrical grinding, heat treatment, acid washing and groove rolling on the blank bar by using a lathe, performing light wave heating by using the grinding cutting fluid in the step (4) in the grinding cutting process, eliminating thermal stress, and preparing a rough milling cutter after finishing processing;
6) passivating and polishing the rough milling cutter prepared in the step (5);
7) coating the passivated milling cutter in the step (6) with a coating, and coating the passivated milling cutter surface with a coating;
8) and (4) putting the milling cutter coated in the step (7) into a sintering furnace again for sintering, raising the internal temperature of the sintering furnace to 350 ℃, and sintering after 0.5-1h to form the tool, namely the tungsten steel milling cutter.
7. The method for preparing the tungsten steel milling cutter for the horizontal machining center according to claim 6, wherein the method comprises the following steps: when the blank rod is used for cutting the groove, the spiral angle of a milling cutter needing to be cut is 35 degrees, the front angle of the milling cutter is 12-14 degrees, and the rear angle of the milling cutter is 10-12 degrees.
8. The method for preparing the tungsten steel milling cutter for the horizontal machining center according to claim 6, wherein the method comprises the following steps: during the passivation treatment, a passivation surface with the diameter of 2 microns and less than 2 microns is formed on the surface of the cutting edge.
9. The method for preparing the tungsten steel milling cutter for the horizontal machining center according to claim 6, wherein the method comprises the following steps: in the process of coating the milling cutter, the coating is a nano titanium nitride coating.
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Cited By (1)
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| CN112705573A (en) * | 2021-03-25 | 2021-04-27 | 大连理工江苏研究院有限公司 | Be used for carbide milling cutter contour machining rolling device |
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|---|---|---|---|---|
| CN112705573A (en) * | 2021-03-25 | 2021-04-27 | 大连理工江苏研究院有限公司 | Be used for carbide milling cutter contour machining rolling device |
| CN112705573B (en) * | 2021-03-25 | 2021-08-03 | 苏州用朴精密科技有限公司 | Be used for carbide milling cutter contour machining rolling device |
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Application publication date: 20200324 |