CN113427203B - Machining method for high-strength handheld mower blade - Google Patents
Machining method for high-strength handheld mower blade Download PDFInfo
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- CN113427203B CN113427203B CN202110518524.XA CN202110518524A CN113427203B CN 113427203 B CN113427203 B CN 113427203B CN 202110518524 A CN202110518524 A CN 202110518524A CN 113427203 B CN113427203 B CN 113427203B
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- 238000000034 method Methods 0.000 title claims abstract description 31
- 238000003754 machining Methods 0.000 title claims description 14
- 238000005520 cutting process Methods 0.000 claims abstract description 20
- 238000005422 blasting Methods 0.000 claims abstract description 17
- 238000010438 heat treatment Methods 0.000 claims abstract description 16
- 238000005496 tempering Methods 0.000 claims abstract description 13
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 10
- 238000004080 punching Methods 0.000 claims abstract description 10
- 239000010959 steel Substances 0.000 claims abstract description 10
- 238000001816 cooling Methods 0.000 claims abstract description 9
- 238000001962 electrophoresis Methods 0.000 claims abstract description 8
- 238000003672 processing method Methods 0.000 claims abstract description 5
- 238000004381 surface treatment Methods 0.000 claims abstract description 5
- 238000005242 forging Methods 0.000 claims abstract description 4
- 238000005498 polishing Methods 0.000 claims abstract description 4
- 238000010791 quenching Methods 0.000 claims abstract description 4
- 230000000171 quenching effect Effects 0.000 claims abstract description 4
- 229910052761 rare earth metal Inorganic materials 0.000 claims description 10
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 8
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 claims description 8
- 150000002910 rare earth metals Chemical class 0.000 claims description 8
- 229910052779 Neodymium Inorganic materials 0.000 claims description 7
- 229910052772 Samarium Inorganic materials 0.000 claims description 7
- 230000017525 heat dissipation Effects 0.000 claims description 7
- 229910052746 lanthanum Inorganic materials 0.000 claims description 7
- FZLIPJUXYLNCLC-UHFFFAOYSA-N lanthanum atom Chemical compound [La] FZLIPJUXYLNCLC-UHFFFAOYSA-N 0.000 claims description 7
- QEFYFXOXNSNQGX-UHFFFAOYSA-N neodymium atom Chemical compound [Nd] QEFYFXOXNSNQGX-UHFFFAOYSA-N 0.000 claims description 7
- KZUNJOHGWZRPMI-UHFFFAOYSA-N samarium atom Chemical compound [Sm] KZUNJOHGWZRPMI-UHFFFAOYSA-N 0.000 claims description 7
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 4
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 claims description 4
- NRTOMJZYCJJWKI-UHFFFAOYSA-N Titanium nitride Chemical compound [Ti]#N NRTOMJZYCJJWKI-UHFFFAOYSA-N 0.000 claims description 4
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 4
- 229910052782 aluminium Inorganic materials 0.000 claims description 4
- 229910052799 carbon Inorganic materials 0.000 claims description 4
- 229910052804 chromium Inorganic materials 0.000 claims description 4
- 239000011651 chromium Substances 0.000 claims description 4
- 229910052742 iron Inorganic materials 0.000 claims description 4
- WPBNNNQJVZRUHP-UHFFFAOYSA-L manganese(2+);methyl n-[[2-(methoxycarbonylcarbamothioylamino)phenyl]carbamothioyl]carbamate;n-[2-(sulfidocarbothioylamino)ethyl]carbamodithioate Chemical compound [Mn+2].[S-]C(=S)NCCNC([S-])=S.COC(=O)NC(=S)NC1=CC=CC=C1NC(=S)NC(=O)OC WPBNNNQJVZRUHP-UHFFFAOYSA-L 0.000 claims description 4
- 238000002156 mixing Methods 0.000 claims description 4
- 229910052759 nickel Inorganic materials 0.000 claims description 4
- 239000002994 raw material Substances 0.000 claims description 4
- 229910052710 silicon Inorganic materials 0.000 claims description 4
- 239000010703 silicon Substances 0.000 claims description 4
- 238000003756 stirring Methods 0.000 claims description 4
- WFKWXMTUELFFGS-UHFFFAOYSA-N tungsten Chemical compound [W] WFKWXMTUELFFGS-UHFFFAOYSA-N 0.000 claims description 4
- 229910052721 tungsten Inorganic materials 0.000 claims description 4
- 239000010937 tungsten Substances 0.000 claims description 4
- 229910052720 vanadium Inorganic materials 0.000 claims description 4
- LEONUFNNVUYDNQ-UHFFFAOYSA-N vanadium atom Chemical compound [V] LEONUFNNVUYDNQ-UHFFFAOYSA-N 0.000 claims description 4
- 238000003801 milling Methods 0.000 claims description 3
- 238000004519 manufacturing process Methods 0.000 abstract description 8
- 230000008569 process Effects 0.000 description 10
- 238000007669 thermal treatment Methods 0.000 description 6
- 230000009471 action Effects 0.000 description 3
- 238000000227 grinding Methods 0.000 description 3
- 238000007493 shaping process Methods 0.000 description 3
- 238000009826 distribution Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 241000196324 Embryophyta Species 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 238000009966 trimming Methods 0.000 description 1
- 238000009333 weeding Methods 0.000 description 1
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Classifications
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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
-
- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01D—HARVESTING; MOWING
- A01D34/00—Mowers; Mowing apparatus of harvesters
- A01D34/01—Mowers; Mowing apparatus of harvesters characterised by features relating to the type of cutting apparatus
- A01D34/412—Mowers; Mowing apparatus of harvesters characterised by features relating to the type of cutting apparatus having rotating cutters
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D8/00—Modifying the physical properties by deformation combined with, or followed by, heat treatment
- C21D8/005—Modifying the physical properties by deformation combined with, or followed by, heat treatment of ferrous alloys
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D9/00—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor
- C21D9/18—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor for knives, scythes, scissors, or like hand cutting tools
-
- 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
- C22C38/005—Ferrous alloys, e.g. steel alloys containing rare earths, i.e. Sc, Y, Lanthanides
-
- 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
- C22C38/04—Ferrous alloys, e.g. steel alloys containing manganese
-
- 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
- C22C38/18—Ferrous alloys, e.g. steel alloys containing chromium
- C22C38/40—Ferrous alloys, e.g. steel alloys containing chromium with nickel
- C22C38/44—Ferrous alloys, e.g. steel alloys containing chromium with nickel with molybdenum or tungsten
-
- 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
- C22C38/18—Ferrous alloys, e.g. steel alloys containing chromium
- C22C38/40—Ferrous alloys, e.g. steel alloys containing chromium with nickel
- C22C38/46—Ferrous alloys, e.g. steel alloys containing chromium with nickel with vanadium
-
- 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
- C22C38/18—Ferrous alloys, e.g. steel alloys containing chromium
- C22C38/40—Ferrous alloys, e.g. steel alloys containing chromium with nickel
- C22C38/50—Ferrous alloys, e.g. steel alloys containing chromium with nickel with titanium or zirconium
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- Life Sciences & Earth Sciences (AREA)
- Environmental Sciences (AREA)
- Heat Treatment Of Articles (AREA)
- Polishing Bodies And Polishing Tools (AREA)
Abstract
The invention relates to the technical field of mower blade processing, and discloses a high-strength handheld mower blade processing method, which comprises the following steps: s1: forming a cutter; injecting molten steel in a molten state into a mold, cooling the molten steel after the blade is molded, and S2: punching a cutting edge, and continuously punching the position of the cutting edge for multiple times; s3: hot forming and heat treatment, namely putting the cutter into a heating furnace with the temperature of 1000 ℃ for hot forging forming, and carrying out isothermal quenching for 10 minutes, wherein the hardness of the quenched blade is 40-45HRC; s4: tempering, namely reducing the temperature in the heating furnace to 500 ℃ at a speed of reducing 100 ℃ per minute, and keeping the temperature of 500 ℃ for tempering for 30 minutes; s5: shot blasting, namely putting a cutter into a shot blasting machine for surface polishing for 2 minutes, and S6: surface treatment, namely putting the cutter into an electrophoresis device for black electrophoresis; the problem of edge breakage can be solved, the edge strength is high, the process steps are shortened, the processing efficiency is improved, and the manufacturing cost is low.
Description
The technical field is as follows:
the invention relates to the technical field of mower blade processing, in particular to a high-strength handheld mower blade processing method.
The background art comprises the following steps:
lawn mowers (Lawn mowers) are also known as weed trimmers, lawnmowers, lawn trimmers, and the like. The mower is a mechanical tool for trimming lawn, vegetation, etc. and consists of cutter head, engine, walking wheels, walking mechanism, blades, handrail and control part. The cutter head is arranged on the travelling wheel, the engine is arranged on the cutter head, the blade is arranged on the output shaft of the engine, the blade is greatly improved in speed by utilizing the high-speed rotation of the engine, the operation time of weeding workers is saved, and a large amount of manpower resources are reduced.
The conventional production and processing technologies of punching forming (single punching), heat treatment, blade grinding, tempering and shaping, shot blasting, surface treatment and the like are generally adopted for the mower blades used in garden work in the market at present.
The processing technology has low production efficiency and high manufacturing cost, the hardness of the blade edge is easily reduced in the blade edge grinding process, the blade edge is easily broken in the using process, the heat treatment deformation quality is unstable, and the dynamic balance is unstable, so that the processing method of the blade of the high-strength handheld mower is urgently needed.
The invention content is as follows:
in view of the problems in the prior art, an object of the present invention is to provide a method for machining a high-strength handheld mower blade.
The technical problem to be solved by the invention is realized by adopting the following technical scheme: the utility model provides a high strength hand-held type lawn mower blade processing method, high strength hand-held type lawn mower blade includes blade, mounting hole, locating hole and radiating groove, includes following step:
s1: forming a cutter; injecting molten steel in a molten state into a mold, cooling after the blade is molded, and roughly machining a mounting hole, a positioning hole and a heat dissipation groove by using a milling machine;
s2: punching a cutting edge, and continuously punching the position of the cutting edge for many times;
s3: hot forming and heat treatment, namely putting the cutter into a heating furnace with the temperature of 1000 ℃ for hot forging forming, and carrying out isothermal quenching for 10 minutes, wherein the hardness of the quenched blade is 40-45HRC;
s4: tempering, namely reducing the temperature in the heating furnace to 500 ℃ at a speed of reducing 100 ℃ per minute, and keeping the temperature of 500 ℃ for tempering for 30 minutes;
s5: performing shot blasting, namely cooling the blade to room temperature, then machining a mounting hole, a positioning hole and a heat dissipation groove according to a finished product by using a horizontal machining center, and then putting a cutter into a shot blasting machine for surface polishing for 2 minutes to ensure that the surface of the blade has no burrs, bubbles, peels or spots;
s6: and (4) surface treatment, namely putting the cutter into an electrophoresis device for black electrophoresis.
Preferably, in the step S1, the molten steel is prepared from the following raw materials in parts by weight: 70-80 parts of carbon, 100-130 parts of chromium, 10-20 parts of manganese, 30-40 parts of silicon, 10-20 parts of tungsten, 10-20 parts of vanadium, 4-8 parts of titanium nitride, 2-4 parts of aluminum, 1-2 parts of nickel, 1-2 parts of rare earth and 9000-9100 parts of iron.
Preferably, the rare earth is prepared by mixing and stirring lanthanum, neodymium and samarium, wherein the lanthanum accounts for 10 parts, the neodymium accounts for 5 parts, and the samarium accounts for 98 parts.
Preferably, the distance between the upper side and the lower side of the cutting edge is 7mm, and the distance between the lower side of the knife body and the upper side of the cutting edge is 15.5mm.
Preferably, the total dynamic balance of the high-strength handheld mower blade 150mm away from the center of rotation is less than 800mg.
Preferably, in step S5, the model of the horizontal machining center is M125.
Preferably, in the step S5, the shot blasting machine is a Q36-series turntable type shot blasting machine, the processing temperature is 30-50 ℃, and the relative humidity of the blade surface is less than 90%.
Compared with the prior art, the invention has the beneficial effects that:
according to the invention, the cutting edge of the cutter is subjected to continuous punch forming, and the edge grinding by machining is not needed, so that the problem of edge breakage can be solved;
the thermal forming and the thermal treatment are combined into one procedure to replace two procedures of thermal treatment and tempering shaping in the traditional process, so that the problem of thermal treatment deformation can be solved, the process steps are shortened, and the processing efficiency is improved;
tempering the cutter in a furnace cooling mode, so that the toughness of the cutter is greatly improved, rare earth elements are added, and the distribution uniformity of carbide in the cutter is improved, thereby improving the overall performance of the cutter; the cutter manufactured by the process method provided by the invention has the advantages of high cutting edge strength (difficult edge breakage), small deformation of heat treatment quality, high production efficiency and low manufacturing cost.
Description of the drawings:
in order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings required to be used in the description of the embodiments are briefly introduced below, and it is obvious that the drawings in the description below are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on the drawings without creative efforts;
FIG. 1 is a process flow diagram of the present invention;
FIG. 2 is a schematic top view of the blade of the present invention;
FIG. 3 is a schematic front view of the blade of the present invention;
wherein: 1. a blade body; 2. a cutting edge; 3. mounting holes; 4. positioning holes; 5. a heat dissipation groove.
The specific implementation mode is as follows:
in order to make the technical means, the creation characteristics, the achievement purposes and the effects of the invention easy to understand, the invention is further explained by combining the specific drawings.
Example 1:
as shown in fig. 1-3; a high-strength handheld mower blade machining method comprises the following steps of:
s1: forming a cutter; injecting molten steel in a molten state into a mold, cooling after blade molding, and roughly processing a mounting hole 3, a positioning hole 4 and a heat dissipation groove 5 by using a milling machine;
s2: punching the cutting edge, and continuously punching the position of the cutting edge 2 for multiple times;
s3: hot forming and heat treatment, namely putting the cutter into a heating furnace with the temperature of 1000 ℃ for hot forging forming, and carrying out isothermal quenching for 10 minutes, wherein the hardness of the quenched blade is 40-45HRC; the thermal forming and the thermal treatment are combined into one procedure to replace two procedures of thermal treatment and tempering shaping in the traditional process, so that the problem of thermal treatment deformation can be solved, the process steps are shortened, and the processing efficiency is improved;
s4: tempering, namely reducing the temperature in the heating furnace to 500 ℃ at a speed of reducing 100 ℃ per minute, keeping the temperature of 500 ℃ for tempering for 30 minutes, and tempering the cutter in a furnace cooling mode, so that the toughness of the cutter is greatly improved;
s5: performing shot blasting, namely cooling the blade to room temperature, then machining the mounting hole 3, the positioning hole 4 and the heat dissipation groove 5 according to a finished product by using a horizontal machining center, and then putting a cutter into a shot blasting machine for surface polishing for 2 minutes to ensure that the surface of the blade has no burrs, bubbles, peels or spots;
s6: and (4) surface treatment, namely putting the cutter into an electrophoresis device for black electrophoresis.
The cutter manufactured by the process method provided by the invention has the advantages of high cutting edge strength (difficult edge breakage), small deformation of heat treatment quality, high production efficiency and low manufacturing cost.
Example 2:
in the step S1, the molten steel is prepared from the following raw materials in parts by weight: 70 parts of carbon, 110 parts of chromium, 18 parts of manganese, 40 parts of silicon, 15 parts of tungsten, 18 parts of vanadium, 6 parts of titanium nitride, 2 parts of aluminum, 1 part of nickel, 1 part of rare earth and 9100 part of iron.
The rare earth is prepared by mixing and stirring 10 parts of lanthanum, 5 parts of neodymium and 98 parts of samarium, and rare earth elements are added to improve the distribution uniformity of carbide in the cutter, so that the overall performance of the cutter is improved.
The distance between the upper side and the lower side of the cutting edge 2 is 7mm, and the distance between the lower side of the knife body 1 and the upper side of the cutting edge 2 is 15.5mm.
The whole dynamic balance amount of the blade of the high-strength handheld mower, which is 150mm away from the rotating center, is less than 800mg.
In the step S5, the model of the horizontal machining center is M125.
In the step S5, a Q36-series turntable type shot blasting machine is selected as the shot blasting machine, the processing temperature is 40 ℃, and the relative humidity of the blade surface is less than 90%.
Example 3:
in the step S1, the molten steel is prepared from the following raw materials in parts by weight: 80 parts of carbon, 130 parts of chromium, 12 parts of manganese, 35 parts of silicon, 20 parts of tungsten, 10 parts of vanadium, 8 parts of titanium nitride, 4 parts of aluminum, 2 parts of nickel, 2 parts of rare earth and 9000 parts of iron.
The rare earth is prepared by mixing and stirring lanthanum, neodymium and samarium, wherein the lanthanum accounts for 10 parts, the neodymium accounts for 5 parts, and the samarium accounts for 98 parts.
The distance between the upper side and the lower side of the cutting edge 2 is 7mm, and the distance between the lower side of the knife body 1 and the upper side of the cutting edge 2 is 15.5mm.
The whole piece dynamic balance weight of the blade of the high-strength handheld mower, which is 150mm away from the rotating center, is less than 800mg.
In the step S5, the model of the horizontal machining center is M125.
In the step S5, a Q36 series turntable type shot blasting machine is selected as the shot blasting machine, the processing temperature is 50 ℃, and the relative humidity of the surface of the blade is less than 80%.
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 phrases "comprising a," "8230," "8230," or "comprising" does not exclude the presence of additional like elements in a process, method, article, or apparatus that comprises the element.
The foregoing shows and describes the general principles and broad features of the present invention and advantages thereof. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are described in the specification and illustrated only to illustrate the principle of the present invention, but that various changes and modifications may be made therein without departing from the spirit and scope of the present invention, which fall within the scope of the invention as claimed. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (5)
1. The utility model provides a high strength hand-held type lawn mower blade processing method which characterized in that, high strength hand-held type lawn mower blade includes blade body (1), blade (2), mounting hole (3), locating hole (4) and radiating groove (5), its characterized in that: the method comprises the following steps:
s1: forming a cutter; injecting molten steel in a molten state into a mold, cooling the molten steel after a blade is molded, and roughly machining a mounting hole (3), a positioning hole (4) and a heat dissipation groove (5) by using a milling machine;
s2: punching the cutting edge, and continuously punching the position of the cutting edge (2) for multiple times;
s3: hot forming and heat treatment, namely putting the cutter into a heating furnace with the temperature of 1000 ℃ for hot forging forming, and carrying out isothermal quenching for 10 minutes, wherein the hardness of the quenched blade is 40-45HRC;
s4: tempering, namely reducing the temperature in the heating furnace to 500 ℃ at a speed of reducing 100 ℃ per minute, and tempering for 30 minutes while keeping the temperature at 500 ℃;
s5: performing shot blasting, namely cooling the blade to room temperature, then machining the mounting hole (3), the positioning hole (4) and the heat dissipation groove (5) according to a finished product by using a horizontal machining center, and then putting a cutter into a shot blasting machine for surface polishing for 2 minutes to ensure that the surface of the blade has no burrs, bubbles, peels or spots;
s6: surface treatment, namely putting the cutter into an electrophoresis device for black electrophoresis;
in the step S1, the molten steel is prepared from the following raw materials in parts by weight: 70-80 parts of carbon, 100-130 parts of chromium, 10-20 parts of manganese, 30-40 parts of silicon, 10-20 parts of tungsten, 10-20 parts of vanadium, 4-8 parts of titanium nitride, 2-4 parts of aluminum, 1-2 parts of nickel, 1-2 parts of rare earth and 9000-9100 parts of iron;
the rare earth is prepared by mixing and stirring lanthanum, neodymium and samarium, wherein the lanthanum accounts for 10 parts, the neodymium accounts for 5 parts, and the samarium accounts for 98 parts.
2. The method of claim 1, wherein the step of machining the blade comprises: the distance between the upper side and the lower side of the cutting edge (2) is 7mm, and the distance between the lower side of the knife body (1) and the upper side of the cutting edge (2) is 15.5mm.
3. The method of claim 1, wherein the step of machining the blade comprises: the whole piece dynamic balance weight of the blade of the high-strength handheld mower, which is 150mm away from the rotating center, is less than 800mg.
4. The method of claim 1, wherein the step of machining the blade comprises: in the step S5, the model of the horizontal machining center is M125.
5. The method of claim 1, wherein the step of machining the blade comprises: in the step S5, the shot blasting machine is a Q36 series rotary table type shot blasting machine, the processing temperature is 30-50 ℃, and the relative humidity of the blade surface is less than 90%.
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| CN202110518524.XA CN113427203B (en) | 2021-05-12 | 2021-05-12 | Machining method for high-strength handheld mower blade |
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| CN202110518524.XA CN113427203B (en) | 2021-05-12 | 2021-05-12 | Machining method for high-strength handheld mower blade |
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| CN113427203B true CN113427203B (en) | 2023-03-31 |
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| CN115256060B (en) * | 2022-08-11 | 2023-12-01 | 宁蒗恒泰农业投资开发有限公司 | Production method of grafting tool special for fruit trees |
| CN115746613B (en) * | 2022-11-23 | 2024-04-09 | 中山庆琏金属制品有限公司 | Flexible high-molecular electrophoretic paint and application thereof in gardening scissors preparation |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP3453483A1 (en) * | 2017-09-12 | 2019-03-13 | United Technologies Corporation | Method of making integrally bladed rotor |
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| DE4204000C2 (en) * | 1992-02-12 | 1993-11-18 | Esm Ennepetaler Schneid U Maeh | Steel blade for agricultural and forestry purposes and process for their manufacture |
| TW360580B (en) * | 1997-05-20 | 1999-06-11 | Jin-Fen Hong | Production process for blade of lawn mower |
| US20070277492A1 (en) * | 2006-05-31 | 2007-12-06 | Imants Ekis | Self-sharpening disc mower blade |
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Denomination of invention: A high-strength handheld lawn mower blade processing method Granted publication date: 20230331 Pledgee: Anhui Guangde Rural Commercial Bank Co.,Ltd. Pledgor: ANHUI BOXING MACHINERY CO.,LTD. Registration number: Y2024980018345 |