CN115351520B - Flaking knife and production method thereof - Google Patents
Flaking knife and production method thereof Download PDFInfo
- Publication number
- CN115351520B CN115351520B CN202211013997.5A CN202211013997A CN115351520B CN 115351520 B CN115351520 B CN 115351520B CN 202211013997 A CN202211013997 A CN 202211013997A CN 115351520 B CN115351520 B CN 115351520B
- Authority
- CN
- China
- Prior art keywords
- whole plate
- tempering
- blades
- blade
- quenching
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 16
- 238000005496 tempering Methods 0.000 claims abstract description 38
- 238000010791 quenching Methods 0.000 claims abstract description 26
- 230000000171 quenching effect Effects 0.000 claims abstract description 25
- 238000005520 cutting process Methods 0.000 claims abstract description 20
- 238000007599 discharging Methods 0.000 claims abstract description 6
- 238000010438 heat treatment Methods 0.000 claims abstract description 6
- 238000000034 method Methods 0.000 claims abstract description 5
- 238000002347 injection Methods 0.000 claims abstract description 3
- 239000007924 injection Substances 0.000 claims abstract description 3
- 238000005507 spraying Methods 0.000 claims description 7
- 238000010079 rubber tapping Methods 0.000 claims description 2
- 238000003698 laser cutting Methods 0.000 claims 1
- 239000007921 spray Substances 0.000 description 7
- 238000010586 diagram Methods 0.000 description 3
- 239000000463 material Substances 0.000 description 2
- 229910001315 Tool steel Inorganic materials 0.000 description 1
- 238000007792 addition Methods 0.000 description 1
- 229910045601 alloy Inorganic materials 0.000 description 1
- 239000000956 alloy Substances 0.000 description 1
- 229910001566 austenite Inorganic materials 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000005336 cracking Methods 0.000 description 1
- 239000013078 crystal Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 239000006185 dispersion Substances 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 229910001562 pearlite Inorganic materials 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 238000004537 pulping Methods 0.000 description 1
- 239000010802 sludge Substances 0.000 description 1
- 238000005728 strengthening Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
- 239000002023 wood Substances 0.000 description 1
Classifications
-
- 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
- B23P15/38—Making specific metal objects by operations not covered by a single other subclass or a group in this subclass cutting tools planing or slotting tools
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
- B24B1/00—Processes of grinding or polishing; Use of auxiliary equipment in connection with such processes
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
- B24B3/00—Sharpening cutting edges, e.g. of tools; Accessories therefor, e.g. for holding the tools
- B24B3/36—Sharpening cutting edges, e.g. of tools; Accessories therefor, e.g. for holding the tools of cutting blades
- B24B3/38—Sharpening cutting edges, e.g. of tools; Accessories therefor, e.g. for holding the tools of cutting blades for planing wood, e.g. cutter blades
-
- 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
- C21D1/00—General methods or devices for heat treatment, e.g. annealing, hardening, quenching or tempering
- C21D1/18—Hardening; Quenching with or without subsequent tempering
-
- 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
- C21D11/00—Process control or regulation for heat treatments
-
- 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
- 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
- C21D9/22—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor for drills; for milling cutters; for machine cutting tools
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P10/00—Technologies related to metal processing
- Y02P10/20—Recycling
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Life Sciences & Earth Sciences (AREA)
- Wood Science & Technology (AREA)
- Heat Treatment Of Articles (AREA)
Abstract
The invention relates to a production method of a flaking knife, which comprises the following steps: blanking the whole plate; cutting a plurality of blades on the whole plate, and controlling the cutting depth to ensure that the blades are connected with the whole plate; quenching the whole plate, heating to 810-910 ℃, preserving heat for 10-20min, discharging from the furnace for oil injection quenching, and keeping the oil temperature at 50-80 ℃; the whole plate is subjected to pressure tempering, the tempering temperature is 400-500 ℃, the tempering time is 6-10h, and the tempering pressure is 6-12MPa; finishing the plate; and (5) respectively finishing the single blades to obtain the finished product. The flaking knife produced by the method has good flatness, tissue uniformity, stable quality and high production efficiency.
Description
Technical Field
The invention relates to the technical field of flaking knife production, in particular to a flaking knife and a production method thereof.
Background
The planing blade is one of wood processing cutter bodies, is widely applied to the material preparation processing in the production process of industries such as papermaking, pulping, artificial boards and the like, and is manufactured by processing alloy tool steel.
At present, when the planing blade is processed, a single blade is generally cut, then the single blade is singly processed by quenching, tempering and the like, the single blade is singly processed, the processing efficiency is low, and the produced blade has poor flatness and tissue uniformity and poor product quality stability.
Disclosure of Invention
The invention provides a flaking knife and a production method thereof, aiming at the defects of the prior art.
In a first aspect of the present invention, a method for producing a flaking blade is provided, comprising the steps of: (1) blanking the whole plate; (2) Cutting a plurality of blades on the whole plate, and controlling the cutting depth to ensure that the blades are connected with the whole plate; (3) Quenching the whole plate, heating to 810-910 ℃, preserving heat for 10-20min, discharging from the furnace for oil injection quenching, and keeping the oil temperature at 50-80 ℃; (4) The whole plate is subjected to pressure tempering, the tempering temperature is 400-500 ℃, the tempering time is 6-10h, and the tempering pressure is 6-12MPa; (5) finishing the plate; and (6) respectively finishing the single blades to obtain the finished product.
According to the invention, the whole plate quenching can fully dissolve flaky pearlite and carbide on the premise of keeping the 8.5-grade austenite grain size of the product, so that the material is not cracked after quenching, waste products are avoided, and the mechanical property of the product after tempering is improved.
The invention controls the whole plate to quench to a proper temperature, and the too high temperature can generate coarse grains and generate quenching cracks or directly burn, thereby greatly reducing the mechanical property. Through oil temperature control of oil spray quenching, more crystal nuclei are formed when the product is Wen Lengsu high, the grain structure is refined, the mechanical property is improved, and the cracking of the product can be prevented. When the quenching oil temperature is too high, the quenching oil can age faster, so that oil sludge is formed to adhere to the surface of the product, the heat exchange law is reduced, and a soft spot is formed; too low an oil temperature is prone to crack formation.
By matching the tempering temperature with the tempering time, the purpose of rapid tempering is achieved, carbide can be separated out to achieve the purpose of dispersion strengthening, and the carbide growth caused by overlong tempering time is prevented. The invention reasonably controls the tempering temperature, the tempering time and the tempering pressure, and if the tempering temperature is high, the local hardness deviation of the product is larger, and the mechanical property difference of each part is larger; the tempering temperature is low, so that the hardness is too high, the rigidity and hardness of the product are insufficient, and the cutting stress cannot be counteracted; if the tempering pressure is large, the product becomes concave, and if the tempering pressure is small, the product becomes convex, and the flatness is poor.
Preferably, in the step (1), the whole plate blanking is cut by adopting plasma.
Preferably, in the step (2), the blade is cut by laser, and the blade and the whole plate are connected with each other by 0.3-0.5mm thickness after cutting.
Preferably, in step (2), 3 to 9 blades are cut out of the whole plate.
Preferably, in the step (3), the oil spraying quenching time is 80-150s, and the oil spraying flow rate is 15-35 cm 3/min.
Preferably, the finishing plate in step (5) is in particular finished by means of a saw blade refiner on the upper and lower surfaces of the whole plate.
Preferably, in step (6), the single-blade finishing includes single-blade tapping and single-blade edge finishing.
Preferably, the tap is machined by a tap. And after the whole plate is finely ground, the single blades are taken down one by one, and then the fine machining of the single blades is carried out.
In a second aspect of the invention, a flaking knife prepared by the production method is provided.
The beneficial effects of the invention are as follows:
The invention cuts out a plurality of blades on the whole plate, the blades are connected on the whole plate, the whole plate is quenched and tempered integrally, the control parameters of quenching and tempering are reasonably controlled, so that the prepared blades have better flatness and tissue uniformity and more stable quality; the method cuts a plurality of blades on the whole plate, and the blades are quenched and tempered together, so that the production efficiency is high.
Drawings
FIG. 1 is a diagram of the whole plate of example 1 of the present invention after cutting;
FIG. 2 is a diagram of the product of example 3 of the present invention;
FIG. 3 is a metallographic structure diagram of the product prepared in example 3 of the present invention, which has high uniformity of internal structure;
Detailed Description
In order to clearly illustrate the technical characteristics of the scheme, the scheme is explained below through a specific embodiment.
Example 1: a production method of a flaking knife comprises the following steps,
(1) Cutting the whole plate by adopting plasma for blanking;
(2) Cutting 9 blades on the whole plate by laser, controlling the cutting depth to ensure that the blades are connected with the whole plate, and connecting the blades with the thickness of 2mm after cutting;
(3) Quenching the whole plate, heating to 810 ℃, preserving heat for 20min, discharging from a furnace for oil spraying quenching, wherein the oil temperature is 50 ℃, the oil spraying quenching time is 150s, and the oil spraying flow rate is 15cm 3/min;
(4) The whole plate is subjected to pressure tempering, the tempering temperature is 500 ℃, the tempering time is 6h, and the tempering pressure is 6MPa;
(5) Finishing the plate;
(6) And (5) respectively finishing the single blades to obtain the finished product.
Example 2: a production method of a flaking knife comprises the following steps,
(1) Cutting the whole plate by adopting plasma for blanking;
(2) 3 blades are cut on the whole plate by laser, the cutting depth is controlled to ensure that the blades are connected to the whole plate, and the blades are connected with the whole plate by 3mm thickness after cutting;
(3) Quenching the whole plate, heating to 910 ℃, preserving heat for 10min, discharging from a furnace for oil spray quenching, wherein the oil temperature is 80 ℃, the oil spray quenching time is 80s, and the oil spray flow rate is 35cm 3/min;
(4) The whole plate is subjected to pressure tempering, the tempering temperature is 400 ℃, the tempering time is 10 hours, and the tempering pressure is 12MPa;
(5) Finishing the plate;
(6) And (5) respectively finishing the single blades to obtain the finished product.
Example 3: a production method of a flaking knife comprises the following steps,
(1) Cutting the whole plate by adopting plasma for blanking;
(2) 6 blades are cut on the whole plate by laser, the cutting depth is controlled to ensure that the blades are connected to the whole plate, and the blades are connected with the whole plate by 3mm thickness after cutting;
(3) Quenching the whole plate, heating to 850 ℃, preserving heat for 15min, discharging from a furnace for oil spray quenching, wherein the oil temperature is 70 ℃, the oil spray quenching time is 120s, and the oil spray flow rate is 25cm 3/min;
(4) The whole plate is subjected to pressure tempering, the tempering temperature is 450 ℃, the tempering time is 8h, and the tempering pressure is 8MPa;
(5) Finishing the plate;
(6) And (5) respectively finishing the single blades to obtain the finished product.
The blades prepared by the examples 1-3 have good flatness and tissue uniformity and stable quality.
Table 1 below shows the values of the various performance parameters of the products prepared according to examples 1-3 of the present invention.
TABLE 1
| Performance parameters | Example 1 | Example 2 | Example 3 |
| Rockwell Hardness (HRC) | 54-56 | 56-58 | 57-58 |
| Tensile strength (MPa) | 1429 | 1435 | 1451 |
| Yield strength (MPa) | 1287 | 1290 | 1307 |
| Elongation (%) | 4 | 3 | 3 |
Therefore, the product prepared by the invention has excellent mechanical properties.
Of course, the above description is not limited to the above examples, and the technical features of the present invention that are not described may be implemented by or by using the prior art, which is not described herein again; the above examples and drawings are only for illustrating the technical scheme of the present invention and not for limiting the same, and the present invention has been described in detail with reference to the preferred embodiments, and it should be understood by those skilled in the art that changes, modifications, additions or substitutions made by those skilled in the art without departing from the spirit of the present invention and the scope of the appended claims.
Claims (5)
1. The production method of the flaking knife is characterized by comprising the following steps:
(1) Blanking the whole plate;
(2) Cutting 6-9 blades on the whole plate, and controlling the cutting depth to ensure that the blades are connected to the whole plate; the blade adopts laser cutting, and the blade is connected with the whole plate by the thickness of 2-3mm after cutting;
(3) Quenching the whole plate, heating to 810-910 ℃, preserving heat for 10-20min, discharging from the furnace for oil injection quenching, and keeping the oil temperature at 50-80 ℃; the oil spraying quenching time is 80-150s, and the oil spraying flow rate is 15-35 cm 3/min;
(4) The whole plate is subjected to pressure tempering, the tempering temperature is 400-500 ℃, the tempering time is 6-10h, and the tempering pressure is 6-12MPa;
(5) Finishing the plate;
(6) And (5) respectively finishing the single blades to obtain the finished product.
2. The method of claim 1, wherein in step (1), the whole plate is cut by plasma.
3. A method of producing a flaking blade according to claim 1, characterized in that the whole plate in step (5) is refined, in particular by means of a saw blade refiner, on the upper and lower surfaces of the whole plate.
4. A method of producing a flaking blade in accordance with claim 1 wherein in step (6) the single blade finishing comprises single blade tapping and single blade edge finishing.
5. A flaking knife produced by the production method of any one of claims 1 to 4.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211013997.5A CN115351520B (en) | 2022-08-23 | 2022-08-23 | Flaking knife and production method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211013997.5A CN115351520B (en) | 2022-08-23 | 2022-08-23 | Flaking knife and production method thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN115351520A CN115351520A (en) | 2022-11-18 |
| CN115351520B true CN115351520B (en) | 2024-08-13 |
Family
ID=84001736
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202211013997.5A Active CN115351520B (en) | 2022-08-23 | 2022-08-23 | Flaking knife and production method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN115351520B (en) |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101909779A (en) * | 2007-12-28 | 2010-12-08 | 罗伯特·博世有限公司 | Be used to make the method for the lateral direction element of driving-belt |
| CN102134681A (en) * | 2010-01-22 | 2011-07-27 | 宝山钢铁股份有限公司 | Steel for saw blade substrate and manufacturing method thereof |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3756865A (en) * | 1971-11-01 | 1973-09-04 | Gillette Co | Razor blades and process for making same |
| US6701627B2 (en) * | 2001-07-26 | 2004-03-09 | American Saw & Mfg. Company, Inc. | Composite utility knife blade |
| CN104480255B (en) * | 2014-12-22 | 2017-04-05 | 中山市奥美森工业有限公司 | A kind of manufacture craft of disintegrating machine moving knife |
| CN207088029U (en) * | 2017-08-19 | 2018-03-13 | 深圳市隆利科技股份有限公司 | A kind of guillotine of whole plate knife rest and the application knife rest |
| CN110665609A (en) * | 2019-11-13 | 2020-01-10 | 谢旭平 | Crushing blade |
-
2022
- 2022-08-23 CN CN202211013997.5A patent/CN115351520B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101909779A (en) * | 2007-12-28 | 2010-12-08 | 罗伯特·博世有限公司 | Be used to make the method for the lateral direction element of driving-belt |
| CN102134681A (en) * | 2010-01-22 | 2011-07-27 | 宝山钢铁股份有限公司 | Steel for saw blade substrate and manufacturing method thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| CN115351520A (en) | 2022-11-18 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103433551B (en) | The manufacture method of the concavo-convex shear blade of a kind of pendulum-type | |
| CN102877070A (en) | Surface compound treatment method for steel mould | |
| CN115351520B (en) | Flaking knife and production method thereof | |
| CN111270050A (en) | Cryogenic treatment process and die steel thereof | |
| CN110303045B (en) | Preparation method of high-interface bonding strength stainless steel composite plate for knife and scissors | |
| CN113579248B (en) | Process method and equipment for preparing M2 high-speed steel by electron beam melting | |
| CN115094413A (en) | High-end pure titanium cutter based on laser cladding titanium alloy powder and preparation method thereof | |
| CN114427090B (en) | High-strength and high-toughness die steel product for blanking and additive manufacturing process thereof | |
| CN1125653A (en) | Mechanical cutter blade and its processing technology | |
| CN114427091B (en) | High-wear-resistance die steel product for hot stamping and additive manufacturing process thereof | |
| CN1401796A (en) | Bimetal saw band and hard alloy ultra-low temp. treatment process | |
| CN101838727B (en) | Heat treatment method for carbide blade base | |
| CN115369319B (en) | Weldable high-strength high-toughness wear-resistant material and heat treatment process thereof | |
| CN116511535A (en) | High-precision machining method for TiAl alloy blade difficult to machine | |
| CN111041175B (en) | High-toughness wear-resistant high manganese steel and preparation method and application thereof | |
| CN112171216A (en) | Machining process of high-speed steel surface-replaceable blade | |
| KR100645767B1 (en) | A heat treatment method for fining crystal particle of blade material | |
| CN112207527A (en) | Machining process of martensitic stainless steel surface-replaceable blade | |
| CN112552044A (en) | Machining process of ceramic cutter | |
| Kovalenko et al. | Increase in the durability of the tool, utilized in aviation machine building and with the reconditioning of the air vessels | |
| CN111230400A (en) | Repairing, reinforcing and remanufacturing method for steel breakout and breakout parts of cold-work die | |
| CN115256060B (en) | Production method of grafting tool special for fruit trees | |
| CN105441808B (en) | A kind of material for being used to prepare crude wood rotary cutter pressure roller | |
| CN113913729B (en) | Blade strengthening method | |
| CN110076537B (en) | Production method of rotary cutter |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |