CN111822827B - Method for hardening knife edge by welding wire and knife edge jig - Google Patents
Method for hardening knife edge by welding wire and knife edge jig Download PDFInfo
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- CN111822827B CN111822827B CN202010738845.6A CN202010738845A CN111822827B CN 111822827 B CN111822827 B CN 111822827B CN 202010738845 A CN202010738845 A CN 202010738845A CN 111822827 B CN111822827 B CN 111822827B
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- 238000003466 welding Methods 0.000 title claims abstract description 56
- 238000000034 method Methods 0.000 title claims abstract description 29
- 238000012545 processing Methods 0.000 claims abstract description 18
- 239000012530 fluid Substances 0.000 claims abstract description 12
- 238000005520 cutting process Methods 0.000 claims description 18
- 238000011049 filling Methods 0.000 claims description 5
- 238000004140 cleaning Methods 0.000 claims description 4
- 238000000227 grinding Methods 0.000 claims description 4
- 238000012958 reprocessing Methods 0.000 claims description 3
- 238000007711 solidification Methods 0.000 claims description 3
- 230000008023 solidification Effects 0.000 claims description 3
- 238000007514 turning Methods 0.000 claims description 3
- 238000003754 machining Methods 0.000 abstract description 12
- 239000000843 powder Substances 0.000 description 10
- 238000004519 manufacturing process Methods 0.000 description 7
- 238000010586 diagram Methods 0.000 description 6
- 229910000831 Steel Inorganic materials 0.000 description 4
- 238000001514 detection method Methods 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 4
- 239000000463 material Substances 0.000 description 4
- 239000010959 steel Substances 0.000 description 4
- 238000005253 cladding Methods 0.000 description 3
- 230000007547 defect Effects 0.000 description 3
- 238000010438 heat treatment Methods 0.000 description 3
- 230000008018 melting Effects 0.000 description 3
- 238000002844 melting Methods 0.000 description 3
- 229910001220 stainless steel Inorganic materials 0.000 description 3
- 239000010935 stainless steel Substances 0.000 description 3
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 2
- 230000004308 accommodation Effects 0.000 description 2
- 229910052799 carbon Inorganic materials 0.000 description 2
- 230000006835 compression Effects 0.000 description 2
- 238000007906 compression Methods 0.000 description 2
- 238000004372 laser cladding Methods 0.000 description 2
- 230000008092 positive effect Effects 0.000 description 2
- 238000005728 strengthening Methods 0.000 description 2
- 238000012360 testing method Methods 0.000 description 2
- 238000013461 design Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 229910001105 martensitic stainless steel Inorganic materials 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 238000003672 processing method Methods 0.000 description 1
- 230000003014 reinforcing effect Effects 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
- 238000012795 verification Methods 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K9/00—Arc welding or cutting
- B23K9/235—Preliminary treatment
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K9/00—Arc welding or cutting
- B23K9/04—Welding for other purposes than joining, e.g. built-up welding
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K9/00—Arc welding or cutting
- B23K9/16—Arc welding or cutting making use of shielding gas
- B23K9/167—Arc welding or cutting making use of shielding gas and of a non-consumable electrode
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K9/00—Arc welding or cutting
- B23K9/32—Accessories
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Plasma & Fusion (AREA)
- Mechanical Engineering (AREA)
- Perforating, Stamping-Out Or Severing By Means Other Than Cutting (AREA)
- Mounting, Exchange, And Manufacturing Of Dies (AREA)
Abstract
The invention discloses a method for hardening a knife edge by adopting welding wires and a knife edge jig, wherein the knife edge hardening method is to assemble a knife to be machined in a jig seat in the knife machining process, the knife edge of the knife to be machined and the jig seat form a closed groove structure, the welding wires are heated and melted to form fluid, the fluid flows into the groove structure, and then the fluid is solidified to be filled once, so that a hardening layer is formed at the knife edge; after the blade is fixed on the die, the blade is not required to be turned over and processed again, and the processing of the single blade can be completed only by one time of processing; only the current amount and the moving speed are controlled, the wire feeding speed is required to protect relatively few working parameters, and the quality is easy to control.
Description
Technical Field
The invention belongs to the technical field of cutter manufacturing, in particular to a method for hardening a cutter edge by using a welding wire and a cutter edge jig, and particularly relates to a cutter edge hardening method and a jig for realizing the method.
Background
The traditional cutter material is generally stainless steel, and in order to ensure the final service performance of the cutter, after the cutter body is manufactured and formed by stamping, the strength, hardness and wear resistance of the cutter body are improved by a heat treatment technology; however, the hardness of the cutting edge part of the cutter processed by adopting the common martensitic stainless steel can only reach about 600HV after heat treatment strengthening, and the hardness value can not meet the requirements of people on the performances of high hardness, high wear resistance and the like of the high-end cutter.
At present, many domestic enterprises directly select foreign high-quality steel as a cutter material, for example, japanese multi-layer steel is selected to manufacture a high-performance cutter, so that the performance of the final cutter, particularly the hardness of a cutting edge part, is ensured, but the purchase cost of the cutter material is greatly increased, the cutter manufacturing cost is increased, and the price of the cutter is increased.
Aiming at the defect of overhigh cost caused by adopting high-quality steel to produce an integral cutter, a technical staff develops a cutter edge processing method for hardening a cutter edge through a welding wire so as to improve the cutter edge hardness and reduce the whole manufacturing cost of the cutter at the same time, and most of the existing cutter edge hardening technologies are laser cladding technologies, and the cost of cladding powder is high and the management environment is required; in addition, the knife edge hardening technology adopts vertical machining in the machining process, and Z-axis height change is needed to be considered in the programming of a machining path; the single cutter needs to be clad back and forth for many times to achieve the processing of the single cutter; the laser power, the laser focal length, the powder output, the protection gas quantity, the moving speed, the melting covered way operation and other working parameters are required to be controlled; such as:
For example, chinese patent CN201810538984.7 discloses a method for processing a blade, which aims to solve the problem that the manufacturing cost of the blade is high when the blade is manufactured by using imported high-quality steel to improve the blade performance of the blade, and discloses a method for processing a blade, which specifically comprises the following steps: step S1, manufacturing preparation of a cutter body is carried out, and cleaning treatment is carried out on a cutter edge part; s2, processing a blade strengthening layer by adopting a welding and laser cladding combined mode; step S3, grinding the edge reinforcing layer to obtain a final cutting edge; when the method is used for carrying out the edge treatment on the cutter, the performance of the edge can be greatly improved, the use effect of the cutter is ensured, the requirement on the cutter body material can be reduced, and the cutter cost is reduced.
Disclosure of Invention
Aiming at the defects in the prior art, the invention aims to provide a cutting edge hardening treatment method and a jig for realizing the method, wherein a cutter to be machined is assembled in a jig seat in the cutter machining process, a closed groove structure is formed between a cutter edge of the cutter to be machined and the jig seat, fluid is formed by heating and melting welding wires, flows into the groove structure, and is solidified to be filled once, so that a hardening layer is formed at the cutter edge; after the blade is fixed on the die, the blade is not required to be turned over and processed again, and the processing of the single blade can be completed only by one time of processing; only the current amount and the moving speed are controlled, the wire feeding speed is required to protect relatively few working parameters, and the quality is easy to control.
The invention aims to solve the technical problem that the prior art is insufficient, and provides a knife edge jig for hardening a knife edge by adopting welding wires, which comprises a jig seat and a cover plate, wherein the jig seat comprises a jig body, a guide post, a knife placing groove, a first positioning hole and a first fixing hole, the jig body is of a cuboid structure, the upper end surface of the jig body is provided with the knife placing groove extending towards the lower end surface of the jig body, the shape of the knife placing groove is matched with the shape of a knife to be machined, the size of the knife placing groove is larger than the size of the knife to be machined so as to realize the accommodation of the knife to be machined by the knife placing groove, the part of the knife placing groove matched with the handle of the knife to be machined is provided with the guide post protruding out of the upper end surface of the knife placing groove, and the handle of the knife to be machined is provided with a guide hole in clearance fit with the guide post; the cutter placing groove is provided with a first positioning hole and a first fixing hole at one end, which is close to the cutter placing groove and matched with the back of the cutter to be processed, of the cutter placing groove, the number of the first positioning holes is one, and the number of the first fixing holes is two or more; the cover plate is of a plate-shaped structure and comprises a cover plate body, the shape of the cover plate body is matched with that of the cutter placing groove, a second positioning hole and a second fixing hole are respectively formed in one end, close to the position, of the cover plate body, matched with the back of the cutter to be processed, of the cover plate body, the number of the second positioning holes is one, the number of the second fixing holes is two or more, and the number of the first fixing holes is the same as that of the second fixing holes; the second positioning hole is matched with the first positioning hole to realize the positioning function of the cover plate in the process of mounting and fixing the cover plate on the jig seat; the first fixing hole is matched with the second fixing hole to realize that the cover plate is installed and fixed on the jig base through bolts; wherein the thickness of the cutter to be processed is larger than the depth of the cutter placing groove, a boss is arranged on one end, close to the cover plate body, of the cover plate body, matched with the back of the cutter to be processed, and the boss protrudes out of the cover plate body, and the height of the boss is equal to the difference value between the thickness of the cutter to be processed and the depth of the cutter placing groove;
When the hardening treatment of the to-be-machined tool is required, the guide hole on the to-be-machined tool passes through the guide post on the tool seat, so that the to-be-machined tool is positioned on the tool seat, and is placed in the tool placing groove, and the back of the to-be-machined tool can lean against the inner surface of the tool placing groove due to the shape of the tool placing groove, so that the to-be-machined tool can be stably placed in the tool placing groove under the limit of the guide post and the tool placing groove; then, the cover plate is positioned on the jig base through the first positioning hole on the jig base and the second positioning hole on the cover plate body, and finally the cover plate is fixedly installed on the jig base through bolts; namely, the assembly of the tool to be processed and the tool seat is completed; at this time, the knife edge of the tool to be processed and the tool seat form a closed groove structure;
the process of the method for hardening the knife edge by adopting the welding wire is as follows:
1) Preparing a cutter to be processed; and cleaning the blade portion;
2) Assembling a tool to be processed in a jig seat, wherein a closed groove structure is formed by a tool edge of the tool to be processed and the jig seat;
3) The cutting edge hardening treatment is carried out in a welding mode; namely, the welding wire is heated and melted to form fluid, the fluid flows into the groove structure, then solidification is carried out to complete one-time filling, and turning and reprocessing are not needed in the processing process;
4) Grinding the hardened part of the cutting edge to obtain a final cutting edge; referring specifically to fig. 8-9, fig. 8 is a schematic diagram of a tool after the fluid filling of the welding wire is completed and cured, wherein the edge portion of the tool is fixedly connected with the welding wire hardening portion and is polished according to the sharpening inclined plane; FIG. 9 is a block diagram of the finished tool after sharpening, with the edge comprising a knife edge facet and a wire hardened facet;
Preferably, the welding wire is a Cr stainless steel welding wire, the specification is SUS440C, the carbon content is 0.95-1.2%, si: less than 1%, mn: less than 1%, P: less than 0.04%, S:0.03 or less, ni: less than 0.6%, cr: 16-18%, mo: less than 0.75%;
Preferably, the welding adopts TIG welding, and the TIG welding has the same technological parameters: the welding current is 80-220A, the arc voltage is 12-20V, the welding speed is 2-5 mm/s, and the wire feeding speed is adjusted according to the thickness of the cutter.
Compared with the prior art, the invention has the following positive effects: the detection jig provided by the invention can be used for rapidly measuring the lateral compression resistance value of the specific part of the knife edge of the knife to be detected through the push-pull force meter matched design, checking and judging the performance of the product, and no effective detection means can intuitively embody the detection effectiveness, the torque test can know the torque, but the bonding strength of the specific part of the knife edge cannot be measured, so that the jig is particularly suitable for the knife edge hardened product, different knife edge widths can be adapted through designing knife fixing grooves with different sizes, limiting is carried out on the jig, and the bonding strength of the knife edge hardened part of the jig is accurately measured; reasonable compression resistance is set through test verification, so that an effective detection means is provided for mass production.
Drawings
FIG. 1 is a schematic diagram of a powder knife edge hardening method in the prior art;
FIG. 2 is a schematic structural view of a tool to be machined according to the present invention;
FIG. 3 is a front view of the fixture of the present invention;
FIG. 4 is a side view of the fixture of the present invention;
FIG. 5 is a front view of the cover plate of the present invention;
FIG. 6 is a side view of a cover plate in the present invention;
FIG. 7 is a schematic view of the overall structure of the tool hardening process according to the present invention;
FIG. 8 is a schematic view of the structure of the knife edge hardening treatment according to the present invention;
FIG. 9 is a schematic view of the structure of the present invention after the knife edge sharpening process is completed;
The marks in the drawings are: 1-to-be-machined tool, 2-tool seat, 21-tool body, 22-guide pillar, 23-tool placing groove, 24-first locating hole, 25-first fixed hole, 3-cover plate, 31-cover plate body, 32-second locating hole, 33-second fixed hole, 34-boss, 41-cutting edge part, 42-welding wire hardening part, 43-cutting edge inclined plane, 51-cutting edge surface and 52-welding wire hardening cutting edge surface.
Detailed Description
The invention is further described below in connection with fig. 1-9 and the detailed description.
Referring to fig. 1, which is a schematic structural diagram adopted by a powder knife edge hardening method in the prior art, it can be seen that in order to implement hardening treatment on both sides of a knife edge in a machining process, a knife to be machined needs to be vertically placed, that is, in the machining process of the knife, all the knife edge is vertically machined, and due to an arc structure of the knife edge, a Z-axis height change needs to be considered in the programming of a machining path, so that machining is complex; and because the processing mode is point processing, the single-branch knife can be processed by back and forth cladding for many times, so that the processing quality is ensured, and a plurality of working parameters such as laser power, laser focal length, powder discharge amount, protection gas amount, moving speed, and covered way operation are required to be controlled accurately, so that the control is complex.
Aiming at the defects in the prior art, the invention provides a method for hardening a knife edge by adopting welding wires and a knife edge jig, and particularly relates to a knife edge jig for hardening a knife edge by adopting welding wires, which comprises a jig seat 2 and a cover plate 3, wherein the jig seat 2 comprises a jig body 21, a guide post 22, a knife placing groove 23, a first positioning hole 24 and a first fixing hole 25, the jig body 21 is of a cuboid structure, the upper end surface of the jig body 21 is provided with a knife placing groove 23 extending towards the lower end surface of the jig body 21, the shape of the knife placing groove 23 is matched with the shape of a knife to be machined 1, the size of the knife placing groove 23 is larger than the size of the knife to be machined so as to realize the accommodation of the knife to be machined 1 by the knife placing groove 23, the guide post 22 protruding out of the upper end surface of the knife placing groove 23 is arranged in a matched manner with the handle of the knife to be machined 1, and the guide post 22 is arranged in the knife placing groove 23 in a clearance matched manner with the guide post 22 to be machined by the handle of the knife to be machined 1; the cutter placing groove 23 is provided with the first positioning holes 24 and the first fixing holes 25 at one end, which is close to the cutter placing groove 23 and is matched with the back of the cutter 1 to be processed, of the cutter placing groove, the number of the first positioning holes 24 is one, and the number of the first fixing holes 25 is two or more; the cover plate 3 is in a plate-shaped structure, the cover plate 3 comprises a cover plate body 31, the shape of the cover plate body 31 is matched with the shape of the cutter placing groove 23, a second positioning hole 32 and a second fixing hole 33 are respectively arranged on one end, close to the cover plate body 31, of the cover plate body, matched with the back of the cutter 1 to be processed, the number of the second positioning holes 32 is one, the number of the second fixing holes 33 is two or more, and the number of the first fixing holes 25 and the number of the second fixing holes 33 are the same; the second positioning hole 32 cooperates with the first positioning hole 24 to realize a positioning function of the cover plate 3 in the process of being mounted and fixed on the jig base 2; the first fixing hole 25 is matched with the second fixing hole 33 to realize that the cover plate 3 is installed and fixed on the jig base 2 through bolts; wherein the thickness of the tool 1 to be processed is greater than the depth of the tool placing groove 23, a boss 34 is arranged on one end, close to the cover plate body 31, of the cover plate body 31, matched with the back of the tool 1 to be processed, and the boss 34 protrudes out of the cover plate body 31, and the height of the boss 34 is equal to the difference between the thickness of the tool 1 to be processed and the depth of the tool placing groove 23;
When the hardening treatment of the tool 1 to be machined is required, firstly, the guide hole on the tool 1 to be machined passes through the guide post 22 on the tool seat 2, so that the tool 1 to be machined is positioned on the tool seat 2, and the tool 1 to be machined is placed in the tool placing groove 23, and due to the arrangement of the shape of the tool placing groove 23, the back of the tool 1 to be machined can lean against the inner surface of the tool placing groove 23, so that the tool 1 to be machined can be stably placed in the tool placing groove 23 under the limit of the guide post 22 and the tool placing groove 23; then, the cover plate 3 is positioned on the jig base 2 through the first positioning holes 24 on the jig base 2 and the second positioning holes 32 on the cover plate body 31, and finally the cover plate 3 is fixedly mounted on the jig base 2 through bolts; namely, the assembly of the tool 1 to be processed and the tool holder 2 is completed; at this time, the knife edge of the tool 1 to be processed and the tool seat 2 form a closed groove structure;
the process of the method for hardening the knife edge by adopting the welding wire is as follows:
1) Preparing a cutter to be processed; and cleaning the blade portion;
2) Assembling a tool to be processed in a jig seat, wherein a closed groove structure is formed by a tool edge of the tool to be processed and the jig seat;
3) The cutting edge hardening treatment is carried out in a welding mode; namely, the welding wire is heated and melted to form fluid, the fluid flows into the groove structure, then solidification is carried out to complete one-time filling, and turning and reprocessing are not needed in the processing process;
4) Grinding the hardened part of the cutting edge to obtain a final cutting edge; referring specifically to fig. 8-9, wherein fig. 8 is a block diagram of the tool after the fluid filling of the welding wire is completed and cured, the cutting edge portion 41 thereof is fixedly connected with the welding wire stiffening portion 42 and is ground according to the sharpening bevel 43; FIG. 9 is a block diagram of the finished tool after sharpening, with the edge including a knife edge facet 51 and a wire hardened facet 52;
wherein, the welding wire is preferably a Cr stainless steel welding wire, the specification is SUS440C, the carbon content is 0.95-1.2%, si: less than 1%, mn: less than 1%, P: less than 0.04%, S:0.03 or less, ni: less than 0.6%, cr: 16-18%, mo: less than 0.75%;
wherein, the welding adopts TIG welding, and the TIG welding has the same technological parameters: the welding current is 80-220A, the arc voltage is 12-20V, the welding speed is 2-5 mm/s, and the wire feeding speed is adjusted according to the thickness of the cutter.
Compared with the prior art, the invention has the following positive effects: the welding wire adopted in the invention is 440 welding wires which are easy to store and manage and have high strength, and compared with the powder cladding knife edge hardening, the welding wire knife edge hardening in the invention has higher consumable use rate;
Secondly, the powder knife edge is hardened, vertical machining is adopted in machining, and Z-axis height change is needed to be considered in machining path programming; the welding wire knife edge is hardened, the processing adopts lying processing, and Z-axis height transformation is not needed to be considered in path programming; in the powder knife edge hardening processing process, a single knife needs to be clad back and forth for a plurality of times to achieve the processing of the single knife; the welding wire knife edge is hardened, and after the blade is fixed to the die, the single-branch knife can be machined only once; the powder knife edge is hardened, and a plurality of working parameters such as laser power, laser focal length, powder output, protection gas quantity, moving speed, melting covered way operation and the like are required to be controlled; the welding wire knife edge is hardened, only the current amount and the wire feeding speed of the moving speed are required to be controlled, and the working parameters of the wire feeding speed are relatively less, so that the quality is easier to control.
In view of the foregoing, it will be appreciated that in view of the above teachings, those skilled in the art will readily appreciate that many modifications are possible in the specific features disclosed herein.
Claims (4)
1. The tool for hardening the tool edge by adopting the welding wire is characterized by comprising a tool seat (2) and a cover plate (3), wherein the tool seat (2) comprises a tool body (21), a guide pillar (22), a tool placing groove (23), a first positioning hole (24) and a first fixing hole (25); the jig body (21) is of a cuboid structure, the upper end face of the jig body (21) is provided with a tool placing groove (23) extending towards the lower end face of the jig body (21), the shape of the tool placing groove (23) is matched with the shape of a tool (1) to be machined, the size of the tool placing groove (23) is larger than that of the tool to be machined so as to accommodate the tool (1) to be machined, the position, matched with the handle of the tool (1) to be machined, of the tool placing groove (23) is provided with a guide post (22) protruding out of the upper end face of the tool placing groove (23), and the handle of the tool (1) to be machined is provided with a guide hole in clearance fit with the guide post (22); the tool placing groove (23) is close to one end of the tool placing groove (23) matched with the tool back of the tool (1) to be processed is provided with a first positioning hole (24) and a first fixing hole (25) respectively, the cover plate (3) is of a plate-shaped structure, the cover plate (3) comprises a cover plate body (31), the shape of the cover plate body (31) is matched with that of the tool placing groove (23), one end of the cover plate body (31) close to the cover plate body (31) matched with the tool back of the tool (1) to be processed is provided with a second positioning hole (32) and a second fixing hole (33) respectively, and the second positioning hole (32) is matched with the first positioning hole (24) to realize the positioning function of the cover plate (3) in the process of being mounted and fixed on the jig seat (2); the first fixing holes (25) are matched with the second fixing holes (33) to realize that the cover plate (3) is installed and fixed on the jig base (2) through bolts;
the number of the first positioning holes (24) is one, and the number of the first fixing holes (25) is two or more;
The thickness of the cutter to be processed (1) is larger than the depth of the cutter placing groove (23), a boss (34) is arranged on one end, close to the cover plate body (31), of the cover plate body (31) and matched with the back of the cutter to be processed (1), and the height of the boss (34) protruding out of the cover plate body (31) is equal to the difference value between the thickness of the cutter to be processed (1) and the depth of the cutter placing groove (23);
the method for hardening the knife edge by adopting the welding wire comprises the following steps:
1) Preparing a cutter to be processed; and cleaning the blade portion;
2) Assembling a tool to be processed in a tool edge jig, wherein a closed groove structure is formed by the tool edge of the tool to be processed and a jig seat;
3) The cutting edge hardening treatment is carried out in a welding mode; namely, the welding wire is heated and melted to form fluid, the fluid flows into the groove structure, then solidification is carried out to complete one-time filling, and turning and reprocessing are not needed in the processing process;
4) Grinding the hardened part of the cutting edge to obtain a final cutting edge;
The welding wire comprises the following specific components: 0.95 to 1.2 percent, si: less than 1%, mn: less than 1%, P: less than 0.04%, S:0.03 or less, ni: less than 0.6%, cr: 16-18%, mo: less than 0.75%, and the balance of Fe.
2. The tool for hardening a tool edge with welding wire according to claim 1, wherein the number of the second positioning holes (32) is one, and the number of the second fixing holes (33) is two or more.
3. The tool for hardening a tool edge with welding wire according to claim 1 or 2, characterized in that the number of the first fixing holes (25) is the same as the number of the second fixing holes (33).
4. The tool for hardening a tool edge by welding wires according to claim 1, wherein TIG welding is adopted in the welding, and the technological parameters of TIG welding are as follows: the welding current is 80-220A, the arc voltage is 12-20V, the welding speed is 2-5 mm/s, and the wire feeding speed is adjusted according to the thickness of the cutter.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202010738845.6A CN111822827B (en) | 2020-07-28 | 2020-07-28 | Method for hardening knife edge by welding wire and knife edge jig |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202010738845.6A CN111822827B (en) | 2020-07-28 | 2020-07-28 | Method for hardening knife edge by welding wire and knife edge jig |
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| CN111822827A CN111822827A (en) | 2020-10-27 |
| CN111822827B true CN111822827B (en) | 2024-05-14 |
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| CN212858135U (en) * | 2020-07-28 | 2021-04-02 | 奇男子五金制品（浙江）有限公司 | Knife edge jig for hardening knife edge by welding wire |
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2020
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|---|---|---|---|---|
| KR20080074296A (en) * | 2007-02-08 | 2008-08-13 | 박승복 | Kitchen ceramic knife and manufacturing method thereof |
| CN202547597U (en) * | 2012-04-27 | 2012-11-21 | 格宝工具(昆山)有限公司 | Jig for fixing cutters |
| CN108453345A (en) * | 2018-05-30 | 2018-08-28 | 阳江东华激光智能科技有限公司 | A kind of blade processing method |
| CN208653789U (en) * | 2018-09-12 | 2019-03-26 | 池州市骏智机电科技有限公司 | General dynamic battery limit top cover board test fixture |
| CN212858135U (en) * | 2020-07-28 | 2021-04-02 | 奇男子五金制品（浙江）有限公司 | Knife edge jig for hardening knife edge by welding wire |
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