CN112280964A - Circular saw blade tooth tip high-frequency quenching device and method - Google Patents
Circular saw blade tooth tip high-frequency quenching device and method Download PDFInfo
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- CN112280964A CN112280964A CN202011175009.8A CN202011175009A CN112280964A CN 112280964 A CN112280964 A CN 112280964A CN 202011175009 A CN202011175009 A CN 202011175009A CN 112280964 A CN112280964 A CN 112280964A
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- 230000000171 quenching effect Effects 0.000 title claims abstract description 64
- 238000010791 quenching Methods 0.000 title claims abstract description 62
- 238000000034 method Methods 0.000 title claims abstract description 14
- 229910052751 metal Inorganic materials 0.000 description 14
- 239000002184 metal Substances 0.000 description 14
- 238000005520 cutting process Methods 0.000 description 7
- 229910000831 Steel Inorganic materials 0.000 description 5
- 239000010959 steel Substances 0.000 description 5
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 4
- 238000010438 heat treatment Methods 0.000 description 4
- 239000000463 material Substances 0.000 description 3
- 229910001220 stainless steel Inorganic materials 0.000 description 3
- 239000010935 stainless steel Substances 0.000 description 3
- 229910052782 aluminium Inorganic materials 0.000 description 2
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 2
- 229910052742 iron Inorganic materials 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- 229910000975 Carbon steel Inorganic materials 0.000 description 1
- CWYNVVGOOAEACU-UHFFFAOYSA-N Fe2+ Chemical compound [Fe+2] CWYNVVGOOAEACU-UHFFFAOYSA-N 0.000 description 1
- 229910000760 Hardened steel Inorganic materials 0.000 description 1
- 229910001315 Tool steel Inorganic materials 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 239000010962 carbon steel Substances 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000005672 electromagnetic field Effects 0.000 description 1
- 230000006698 induction Effects 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000003801 milling Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000008520 organization Effects 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 238000004321 preservation Methods 0.000 description 1
- 238000007493 shaping process Methods 0.000 description 1
- MTPVUVINMAGMJL-UHFFFAOYSA-N trimethyl(1,1,2,2,2-pentafluoroethyl)silane Chemical compound C[Si](C)(C)C(F)(F)C(F)(F)F MTPVUVINMAGMJL-UHFFFAOYSA-N 0.000 description 1
- UONOETXJSWQNOL-UHFFFAOYSA-N tungsten carbide Chemical compound [W+]#[C-] UONOETXJSWQNOL-UHFFFAOYSA-N 0.000 description 1
Images
Classifications
-
- 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
- C21D9/24—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor for saw 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
- C21D1/34—Methods of heating
- C21D1/42—Induction heating
-
- 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
- C21D1/62—Quenching devices
-
- 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
- C21D2221/00—Treating localised areas of an article
- C21D2221/02—Edge parts
-
- 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
- Y02P10/25—Process efficiency
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- Mechanical Engineering (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Heat Treatment Of Articles (AREA)
Abstract
The invention relates to a circular saw blade tooth tip high-frequency quenching device and a method, comprising a clamp and two high-frequency heaters with opposite openings, wherein a quenching space is formed between the two high-frequency heaters; the high-frequency heater sets up in the both sides of anchor clamps, and anchor clamps are connected with the rotary driving piece, and anchor clamps can centre gripping circular saw piece and make it be in the quenching space, and anchor clamps can drive the circular saw piece and rotate along self central axis to make the prong of circular saw piece circumference department can get into high-frequency heater in proper order, and then accomplish the high-frequency hardening.
Description
Technical Field
The invention belongs to the technical field of circular saw blade production and processing, and particularly relates to a circular saw blade tooth tip high-frequency quenching device and method.
Background
The circular saw blade is used for cutting off low-hardness carbon steel and non-ferrous metal bars and pipes, cutting pipes of superhard materials and milling difficult-to-cut materials (heat-resistant iron and stainless steel high-hardness steel). The circular saw blade has different teeth, hardened steel as base body and tungsten carbide and titanium carbide as blade head. Saw blade with 0 ° of tooth inclination: is specially used for cutting steel. Saw blade with 7 ° of tooth inclination: is specially used for cutting softer materials (such as aluminum). The trochoid convex teeth are specially designed: it is used for cutting various steel products, stainless steel and aluminum. (all the teeth share the cutting load, maximizing the life of the blade and maximizing the force per blade) the blade cuts steel, iron and stainless steel at faster cutting speeds with little frictional resistance.
The inventor has appreciated that the circular saw blade needs to be quenched at the tooth tips after machining is completed to improve the surface hardness of the tooth tip portions, and the conventional quenching method is to put the whole circular saw blade into a quenching device, then keep the temperature for a period of time, and finally, rapidly cool the circular saw blade. The existing quenching device can not finish surface quenching of a workpiece independently, so that the internal structure of the metal circular saw blade is heated, and the organization structure is changed; and the metal circular saw blade is slow to heat up and needs heat preservation, and a large amount of time is consumed in the quenching process.
In some high-frequency induction quenching devices and processes, the quenching density of the tooth tips is not uniform in the quenching process, the quenching frequency is low, the quenching effect is not good, and the quenching of the tooth tips of the circular saw blade is not facilitated.
Disclosure of Invention
The invention aims to provide a circular saw blade tooth tip high-frequency quenching device and a circular saw blade tooth tip high-frequency quenching method, which can solve at least one of the technical problems.
In order to achieve the above object, a first aspect of the present disclosure provides a circular saw blade tooth tip high-frequency quenching apparatus, comprising a jig and two high-frequency heaters having openings arranged oppositely, a quenching space being formed between the two high-frequency heaters; the high-frequency heater sets up in the both sides of anchor clamps, and anchor clamps are connected with the rotary driving piece, and anchor clamps can centre gripping circular saw piece and make it be in the quenching space, and anchor clamps can drive the circular saw piece and rotate along self central axis to make the prong of circular saw piece circumference department can get into high-frequency heater in proper order, and then accomplish the high-frequency hardening.
The second aspect of the disclosure provides a circular saw blade tooth tip high-frequency quenching method, which comprises the following steps:
and 1, enabling the two high-frequency heaters to be away from each other until the quenching space is in the maximum value within the set range.
And 2, mounting a circular saw blade to be quenched on the clamp.
And 4, rotating the rotary driving piece to enable the tooth tips on the outer circumference of the circular saw blade to be uniformly heated.
The beneficial effects of one or more of the above technical solutions are as follows:
(1) two high-frequency heaters with opposite openings are adopted, and a quenching space can be formed between the two high-frequency heaters, so that the two ends of the circumference of the circular saw blade are simultaneously positioned in an electromagnetic field generated by high-frequency current, the surface quenching of the tooth tip is simultaneously carried out, and the surface quenching efficiency is improved.
(2) The rotary driving piece is adopted to drive the clamp and the circular saw blade to rotate, so that the tooth tips at the circumference of the circular saw blade sequentially enter the high-frequency heater to be quenched, the time of different tooth tips staying in the high-frequency heater is the same as the position of the different tooth tips during heating, and the quenching effects of the different tooth tips are the same.
(3) In the high-frequency quenching method of the circular saw blade, the distance between the circular saw blade and the high-frequency heater is adopted, so that the tooth root is not heated, the tooth root and the base body of the circular saw blade can be prevented from being quenched, only the surface hardness of the tooth tip is ensured, the properties of the shaping, the brittleness and the like of the tooth root and the base body cannot be changed, and the structural strength of the circular saw blade is ensured.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this application, illustrate embodiments of the application and, together with the description, serve to explain the application and are not intended to limit the application.
Fig. 1 is a front view of the overall structure in embodiment 1 of the present disclosure;
fig. 2 is a schematic view of an internal structure in embodiment 1 of the present disclosure;
FIG. 3 is a schematic structural diagram of the overall structure of embodiment 1 of the present disclosure during operation;
fig. 4 is an axis view of a slide rail in embodiment 1 of the present disclosure.
In the figure: 1. a base; 2. supporting legs; 3. an electrical controller; 4. a fixed seat; 5. a quenching box; 6. a hinge; 7. a box door; 8. a slide rail; 9. a sliding electric cylinder; 10. a fixed block; 11. a high-frequency heater; 12. a circular saw blade; 13. rotating the rod; 14. an output shaft; 15. a rotating electric machine; 16. a motor fixing frame; 17. fixing the rod; 18. operating a control screen; 19. a door handle; 20. a limiting block; 21. a chute.
Detailed Description
It should be noted that the following detailed description is exemplary and is intended to provide further explanation of the disclosure. Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs.
It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of example embodiments according to the present application. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, and it should be understood that when the terms "comprises" and/or "comprising" are used in this specification, they specify the presence of stated features, steps, operations, devices, components, and/or combinations thereof, unless the context clearly indicates otherwise.
Example 1
As shown in FIGS. 1 to 4, a circular saw blade 12 tooth point high-frequency quenching apparatus comprises a jig and two high-frequency heaters 11 having openings arranged to face each other, a quenching space being formed between the two high-frequency heaters 11; the high-frequency heaters 11 are provided on both sides of the jig, and the jig is connected to the rotary driving member, and the jig can hold the circular saw blade 12 and rotate the circular saw blade 12 along its own center axis. The two high-frequency heaters 11 are arranged symmetrically with respect to the axis of rotation of the rotary drive.
In the present embodiment, the distance between the two high-frequency heaters 11 can be adjusted and fixed. The distance between the two high-frequency heaters 11 and the axis of rotation of the rotary drive can be adjusted synchronously.
Specifically, in order to realize that the relative position between two high frequency heating 11 can be adjusted, set up vertical slide rail 8, slide rail 8 supports through frame or box, slide rail 8's both ends fixed mounting stopper 20. The middle part of the slide rail 8 is provided with a fixed block, the sliding electric cylinder is fixedly arranged outside the slide rail 8, wherein a linear motion part in the sliding electric cylinder is fixedly connected with a shell of the high-frequency heater 11, and the linear motion of the sliding electric cylinder can drive the high-frequency heater 11 to perform reciprocating linear motion along the direction of the guide rail.
It is understood that in other embodiments, other linear driving components may be installed between the two high-frequency heaters 11, as long as the distance between the two high-frequency heaters 11 and the rotation axis of the rotary driving member can be adjusted synchronously. Specifically, the rotation axis of the rotary drive is arranged horizontally, and the two high-frequency heaters 11 are arranged vertically.
In this embodiment, the clamp includes a rod coaxially fixed with the rotary driving member, one end of the rod close to the rotary driving member is provided with a baffle plate, the other end is provided with an external thread, and the rod is connected with a locking nut through the external thread, so that the clamping process of the metal circular saw blade is realized through the locking nut and the baffle plate.
In the present embodiment, in order to separate the quenching space from the external environment, the high-frequency heater 11 and the jig are provided in the quenching tank 5.
It is understood that, in order to complete the mounting and dismounting of the metal circular saw blade 12 to be quenched in the jig, the quenching box 5 should include a box body and a box door 7, and the box door 7 can be opened and closed to expose or close the inner space of the quenching box 5. The door 17 is provided with a door handle 19.
Specifically, the box body is connected with the box door 7 through a hinge 6, and one end of an opening of the box body and one side edge of the box door 7 are respectively fixed with two leaf sheets in the same hinge 6, so that the box door 7 is rotatably connected with the box body. In other embodiments, a detachable box structure may be adopted, i.e., the quenching box 5 is composed of two parts, and after the metal circular saw blade 12 is installed, the two parts of the shell are spliced to form the complete quenching box 5. It is understood that the quenching box 5 may also adopt other structural forms to meet the requirements of being separated from the external environment when in use and exposing the inner cavity of the quenching box 5 when the metal circular saw blade 12 is installed and removed. Other structural forms can be set by persons skilled in the art, and are not described in detail herein.
In the case of providing a box, the box is mounted on a base 1, and the base 1 is supported by a plurality of support legs 2 at the lower end.
In this embodiment, the rotary driving member includes a motor 15, an output shaft 14 of the motor 15 penetrates through a side wall of the quenching tank 5 and then extends into an inner cavity of the quenching tank 5, the output shaft 14 is coaxially fixed with a rotating rod 13, and the clamp is mounted on the rotating rod 13. The motor 15 is fixedly connected with a motor fixing frame 16, and the motor fixing frame 16 is fixedly connected with the side wall of the quenching box 5.
It is understood that in the case of the present embodiment that the motor 15 is used as the rotary driving member, the rotation speed of the motor 15 needs to be precisely controlled, that is, the stepping motor 15 or the speed reducing motor 15 needs to be used to drive the clamp, the metal circular saw blade 12 to rotate.
In other embodiments, the rotary driving member may be a pneumatic motor or a hydraulic motor, etc., in which case the precise control of the rotational speed can be ensured. The specific structure can be set by those skilled in the art, and will not be described herein.
It is to be understood that, in the present embodiment, in order to control the heating frequency and time of the high-frequency heater 11, the movement of the sliding electric cylinder, and the movement of the motor 15; an electric controller 3 is required to be arranged, and the electric controller 3 is installed below the base 1 and is fixedly connected with the supporting legs 2 through a fixing seat 4. In order to issue the command, an operation control panel 18 needs to be provided, the operation control panel 18 is connected to the electric controller 3 by a signal, and the operation control panel 18 is fixedly connected to the outer wall of the quenching box 5 through a fixing rod 17.
It should be noted that the steel for saw blades in this embodiment is generally tool steel, and has high carbon content and good hardenability, and quenching can be achieved by air cooling.
Example 2
The embodiment provides a circular saw blade 12 tooth tip high-frequency quenching method, which comprises the following steps:
And 2, mounting a metal circular saw blade 12 to be quenched on the clamp. Specifically, the lock nut on the clamp is removed, then the mounting hole of the metal circular saw blade 12 is arranged outside the clamp locking rod in a penetrating mode, then the lock nut is screwed, and locking and fixing of the metal circular saw blade 12 are completed.
Specifically, the rotational speed of the rotary drive member is determined by the frequency of the high-frequency heater 11 and the dimensional specification of the metal circular saw blade 12; it is necessary to ensure that the temperature of the tooth tip initially heated is higher than a set value although the temperature of the tooth tip initially heated falls after all the tooth tip positions are subjected to high-frequency heating.
Although the present disclosure has been described with reference to specific embodiments, it should be understood that the scope of the present disclosure is not limited thereto, and those skilled in the art will appreciate that various modifications and changes can be made without departing from the spirit and scope of the present disclosure.
Claims (10)
1. A circular saw blade tooth point high-frequency quenching device is characterized by comprising a clamp and two high-frequency heaters, wherein the openings of the two high-frequency heaters are oppositely arranged, and a quenching space is formed between the two high-frequency heaters;
the high-frequency heater sets up in the both sides of anchor clamps, and anchor clamps are connected with the rotary driving piece, and anchor clamps can centre gripping circular saw piece and make it be in the quenching space, and anchor clamps can drive the circular saw piece and rotate along self central axis to make the prong of circular saw piece circumference department can get into high-frequency heater in proper order, and then accomplish the high-frequency hardening.
2. The circular saw blade tooth tip high-frequency quenching apparatus as claimed in claim 1, wherein the distance between the two high-frequency heaters is adjustable and fixed.
3. The circular saw blade tooth tip high-frequency quenching apparatus as claimed in claim 1, wherein the two high-frequency heaters are arranged symmetrically with respect to the rotational axis of the rotary drive member.
4. The circular saw blade tooth tip high-frequency hardening apparatus as claimed in claim 1, wherein the distance between said two high-frequency heaters and the rotation axis of the rotary driving member can be adjusted in synchronization.
5. The circular saw blade tooth tip high-frequency quenching device as claimed in claim 1, wherein the high-frequency heater and the clamp are disposed in a quenching tank, the rotary driving member comprises a motor, an output shaft of the motor extends into an inner cavity of the quenching tank after passing through a side wall of the quenching tank, the output shaft is coaxially fixed to a rotary rod, and the clamp is mounted on the rotary rod.
6. The circular saw blade tooth tip high-frequency quenching apparatus as claimed in claim 1, wherein each high-frequency heater is driven by a sliding electric cylinder which is mounted in a sliding groove of the slide rail to be supported, the sliding electric cylinder being capable of driving the high-frequency heater to reciprocate in the extending direction of the slide rail.
7. The circular saw blade tooth tip high-frequency quenching device as claimed in claim 1, wherein the quenching box comprises a box body and a box door, and the box body and the box door are connected through hinges.
8. The circular saw blade tooth tip high-frequency quenching device as claimed in claim 1, wherein the motor is fixedly connected with a motor holder, and the motor holder is fixedly connected with a side wall of the quenching box.
9. The circular saw blade tooth tip high-frequency quenching device as claimed in claim 1, wherein said slide rail is arranged vertically and the rotational axis of the rotary driving member is arranged horizontally.
10. A circular saw blade tooth tip high-frequency quenching method is characterized by comprising the following steps:
the two high-frequency heaters are mutually far away to the maximum value of the quenching space within the set range;
a circular saw blade to be quenched is arranged on the clamp;
the two high-frequency heaters are close to each other until part of the structure of the circular saw blade extends into the opening of the high-frequency heater; the distance between the circular saw blade and the high-frequency heater is set to: the tooth tip is heated by high frequency, and the tooth root is not heated;
the rotary drive member rotates so that the tips of the teeth on the outer circumference of the circular saw blade are uniformly heated.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011175009.8A CN112280964A (en) | 2020-10-28 | 2020-10-28 | Circular saw blade tooth tip high-frequency quenching device and method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011175009.8A CN112280964A (en) | 2020-10-28 | 2020-10-28 | Circular saw blade tooth tip high-frequency quenching device and method |
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| CN112280964A true CN112280964A (en) | 2021-01-29 |
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| CN202011175009.8A Pending CN112280964A (en) | 2020-10-28 | 2020-10-28 | Circular saw blade tooth tip high-frequency quenching device and method |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114293006A (en) * | 2021-11-30 | 2022-04-08 | 宁波创跃园林工具有限公司 | High-frequency quenching system of high-carbon steel saw blade for pruner |
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|---|---|---|---|---|
| CN201598315U (en) * | 2010-01-06 | 2010-10-06 | 唐山冶金锯片有限公司 | Circular saw blade tooth top high-frequency hardening machine |
| US20120234824A1 (en) * | 2011-03-15 | 2012-09-20 | Neturen Takuto Co., Ltd | Heating Apparatus, Heat Treatment Apparatus, and Heating Method |
| WO2017203915A1 (en) * | 2016-05-23 | 2017-11-30 | Ntn株式会社 | Heat treatment method for ring-shaped member, manufacturing method for ring-shaped member, bearing ring of roller bearing, and roller bearing |
| CN207016818U (en) * | 2017-07-13 | 2018-02-16 | 燕山大学 | A kind of new device for cam scan-type sensing heating |
| CN210254525U (en) * | 2019-07-29 | 2020-04-07 | 山东舜世高科实业有限公司 | Device capable of repairing cold-formed steel hot-cutting circular saw blade |
-
2020
- 2020-10-28 CN CN202011175009.8A patent/CN112280964A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201598315U (en) * | 2010-01-06 | 2010-10-06 | 唐山冶金锯片有限公司 | Circular saw blade tooth top high-frequency hardening machine |
| US20120234824A1 (en) * | 2011-03-15 | 2012-09-20 | Neturen Takuto Co., Ltd | Heating Apparatus, Heat Treatment Apparatus, and Heating Method |
| WO2017203915A1 (en) * | 2016-05-23 | 2017-11-30 | Ntn株式会社 | Heat treatment method for ring-shaped member, manufacturing method for ring-shaped member, bearing ring of roller bearing, and roller bearing |
| CN207016818U (en) * | 2017-07-13 | 2018-02-16 | 燕山大学 | A kind of new device for cam scan-type sensing heating |
| CN210254525U (en) * | 2019-07-29 | 2020-04-07 | 山东舜世高科实业有限公司 | Device capable of repairing cold-formed steel hot-cutting circular saw blade |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114293006A (en) * | 2021-11-30 | 2022-04-08 | 宁波创跃园林工具有限公司 | High-frequency quenching system of high-carbon steel saw blade for pruner |
| CN114293006B (en) * | 2021-11-30 | 2024-04-12 | 宁波创跃园林工具有限公司 | High-frequency quenching system of high-carbon steel saw blade for pruning machine |
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Application publication date: 20210129 |
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