CN110804723A - Heat treatment method for saw blade production - Google Patents
Heat treatment method for saw blade production Download PDFInfo
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- CN110804723A CN110804723A CN201911087685.7A CN201911087685A CN110804723A CN 110804723 A CN110804723 A CN 110804723A CN 201911087685 A CN201911087685 A CN 201911087685A CN 110804723 A CN110804723 A CN 110804723A
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- Prior art keywords
- saw blade
- heat treatment
- carburizing
- temperature
- heat preservation
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- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C8/00—Solid state diffusion of only non-metal elements into metallic material surfaces; Chemical surface treatment of metallic material by reaction of the surface with a reactive gas, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals
- C23C8/60—Solid state diffusion of only non-metal elements into metallic material surfaces; Chemical surface treatment of metallic material by reaction of the surface with a reactive gas, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals using solids, e.g. powders, pastes
- C23C8/62—Solid state diffusion of only non-metal elements into metallic material surfaces; Chemical surface treatment of metallic material by reaction of the surface with a reactive gas, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals using solids, e.g. powders, pastes only one element being applied
- C23C8/64—Carburising
- C23C8/66—Carburising of ferrous surfaces
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- 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
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- 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
- C21D1/25—Hardening, combined with annealing between 300 degrees Celsius and 600 degrees Celsius, i.e. heat refining ("Vergüten")
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- 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
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Mechanical Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Heat Treatment Of Articles (AREA)
Abstract
A heat treatment method for saw blade production comprises the following steps: s1, carburizing the saw blade: the method is carried out by adopting a solid carburization mode; and boxing; s2, carburizing and boxing: starting the medium-temperature box type resistance furnace, and carburizing the sealed carbon through a feeding mechanism of the medium-temperature box type resistance furnace when the internal temperature reaches 840-860 ℃ and tends to be stable; s3, in the quenching and tempering process, sequentially performing a heat preservation stage and an oil cooling stage, wherein the temperature of the heat preservation stage is 700-900 ℃, and the heat preservation time is controlled to be 3-5 h; the heating temperature in the tempering treatment process is between 300 ℃ and 350 ℃. Can effectively solve the problem of how to produce the saw blade with hardness, wear resistance, fatigue strength, toughness and comprehensive mechanical properties in the background technology.
Description
Technical Field
The invention relates to the technical field of saw blade production, in particular to a heat treatment method for saw blade production.
Background
The saw blade is a steel sheet bar provided with tooth edges, the tooth edges are the main parts of the saw blade and are divided into a bimetal saw blade, a carbonized abrasive saw blade, a high-speed steel saw blade and a carbon steel saw blade in material;
the bimetal saw blade is a saw blade formed by welding two metals, and particularly consists of a carbon steel saw body and high-speed steel saw teeth. Used for cutting pipe fittings, solid bodies, wood, plastics and all machinable metals. Compared with a single metal saw blade, the heat resistance and the abrasion resistance are higher, and the service life is longer. The flexibility is strong, and the fracture and the breakage in the cutting process can be effectively avoided;
the carborundum saw blade is used for cutting glass, hardened steel, stranded optical fiber and ceramic tile. The cutting tool has the advantages that the cutting tool is super-strong in heat resistance and abrasion resistance, can cut all substances which can not be cut by other saw blades or saw blades, can cut hard alloy to 300mm/min, can cut marble to 100mm/min, and can cut diamond to 40mm/min, the cutting efficiency is dozens of times of that of a traditional reciprocating saw or linear cutting, the cut is narrow (only 1.2 mm-2 mm), compared with a traditional reciprocating saw and a traditional circular saw, the cutting tool can save 6-10 times of raw materials, obvious economic benefits can be brought to users, and the advantages are incomparable to that of the traditional reciprocating saw and the circular saw;
high speed hacksaw blades are used to cut pipe, solids, wood, plastics and all machinable metals. The blade hardness is higher than other high speed steels. Has strong flexibility and is very suitable for being matched with a saw frame with small tension. The center of the back surface of the saw band is not hardened, so that the saw band is prevented from being broken in the cutting process; carbon steel saw blades are used for cutting pipes, solids, wood, plastics and all machinable metals. Low cost and universal use.
Through search, Chinese patent discloses a manufacturing process of a bimetal band saw blade (publication No. CN103962644B), in the content of the patent, when the saw blade is subjected to heat treatment, the obtained secondary semi-finished product is quenched at 1170-1200 ℃ for 2-5 minutes, then is subjected to subzero treatment at-100 ℃ to-150 ℃ for 10-30 minutes, and is tempered at 540-550 ℃ for 20-40 minutes after the subzero treatment is finished, and is cooled to room temperature after the tempering treatment is finished, so that a tertiary semi-finished product is obtained.
Through search, the Chinese patent discloses a low-temperature quenching heat treatment process for high-speed steel saw blades (publication number CN100342040C), and the technical content of the patent comprises the following process steps: preheating, quenching, cooling and tempering, wherein the heating temperature in the quenching process is 1080-1120 ℃. The invention can effectively improve the sawing life, toughness and wear resistance of the high-speed steel jig saw and the reciprocating saw because the high-speed steel saw blade is quenched at a lower heating temperature, and is particularly suitable for quenching heat treatment of the high-speed steel materials for producing the jig saw blade and the reciprocating saw blade.
Through search, the Chinese patent discloses a heat treatment process for a bimetal saw blade (publication No. CN1073485A), and the technical content of the patent comprises five procedures, namely heating, cooling, tempering, co-infiltrating and oxidizing. The bimetal saw blade treated by the process has high wear resistance and high hardness, the sawing life of the bimetal saw blade is prolonged by more than 10-25% compared with the whole high-speed steel saw blade obtained from the national silver plate, and the bimetal saw blade can be suitable for machine saw blades, hand saw blades and band saw blades.
In summary, in the above three patents and the prior art for producing saw blades, the heat treatment process of the saw blade in the production process is only a single heat treatment step of quenching and tempering, and the quality of one saw blade is determined according to the hardness, wear resistance, fatigue strength toughness, comprehensive mechanical properties, etc. therefore, how to produce a saw blade with hardness, wear resistance, fatigue strength toughness and comprehensive mechanical properties is a problem that we should solve at present.
Disclosure of Invention
The invention aims to overcome the defects in the prior art, provides a heat treatment method for saw blade production, and can effectively solve the problem of how to produce a saw blade with hardness, wear resistance, fatigue strength, toughness and comprehensive mechanical properties in the prior art.
In order to achieve the purpose, the invention provides the following technical scheme: a heat treatment method for saw blade production comprises the following steps:
1. a heat treatment method for saw blade production comprises the following steps:
s1, carburizing the saw blade: the method is carried out by adopting a solid carburization mode; and boxing;
s2, carburizing and boxing: starting the medium-temperature box type resistance furnace, and carburizing the sealed carbon through a feeding mechanism of the medium-temperature box type resistance furnace when the internal temperature reaches 840-860 ℃ and tends to be stable;
s3, in the quenching and tempering process, sequentially performing a heat preservation stage and an oil cooling stage, wherein the temperature of the heat preservation stage is 700-900 ℃, and the heat preservation time is controlled to be 3-5 h; the heating temperature in the tempering treatment process is between 300 ℃ and 350 ℃.
Further, the oil cooling stage adopts 30# machine oil.
Further, the heat preservation time of the thermal refining is 4 hours.
Further, the heat preservation time in the tempering treatment process is not less than 3h, and cooling is carried out after discharging.
Further, the tempering treatment process is performed more than once.
Drawings
FIG. 1 is a block flow diagram of the present invention;
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Example 1:
referring to fig. 1, the present invention provides a technical solution: a heat treatment method for saw blade production comprises the following steps: a heat treatment method for saw blade production comprises the following steps:
s1, carburizing the saw blade: the method is carried out by adopting a solid carburization mode; and boxing;
s2, carburizing and boxing: starting the medium-temperature box type resistance furnace, and carburizing the sealed carbon through a feeding mechanism of the medium-temperature box type resistance furnace when the internal temperature reaches 840-860 ℃ and tends to be stable;
s3, in the quenching and tempering process, sequentially performing a heat preservation stage and an oil cooling stage, wherein the temperature of the heat preservation stage is 700-900 ℃, and the heat preservation time is controlled to be 3-5 h; the heating temperature in the tempering treatment process is 300-350 ℃, and the saw blade production heat treatment according to claim 1 is characterized in that 30# mechanical oil is adopted in the oil cooling stage. The heat preservation time of the thermal refining is 4 hours. And the heat preservation time in the tempering process is not less than 3h, and cooling is carried out after discharging. The tempering treatment process is carried out more than once.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (5)
1. A heat treatment method for saw blade production is characterized in that: the method comprises the following steps:
s1, carburizing the saw blade: the method is carried out by adopting a solid carburization mode; and boxing;
s2, carburizing and boxing: starting the medium-temperature box type resistance furnace, and carburizing the sealed carbon through a feeding mechanism of the medium-temperature box type resistance furnace when the internal temperature reaches 840-860 ℃ and tends to be stable;
s3, in the quenching and tempering process, sequentially performing a heat preservation stage and an oil cooling stage, wherein the temperature of the heat preservation stage is 700-900 ℃, and the heat preservation time is controlled to be 3-5 h; the heating temperature in the tempering treatment process is between 300 ℃ and 350 ℃.
2. Saw blade production heat treatment according to claim 1, characterized in that the oil cooling stage uses # 30 machine oil.
3. Saw blade production heat treatment according to claim 1, characterized in that the holding time for the hardening and tempering is 4 h.
4. The saw blade production heat treatment of claim 1, wherein the tempering process is carried out for a holding time of not less than 3 hours and is cooled after discharge.
5. Saw blade production heat treatment according to claim 1, characterised in that the tempering process is performed more than once.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911087685.7A CN110804723A (en) | 2019-11-08 | 2019-11-08 | Heat treatment method for saw blade production |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911087685.7A CN110804723A (en) | 2019-11-08 | 2019-11-08 | Heat treatment method for saw blade production |
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| CN110804723A true CN110804723A (en) | 2020-02-18 |
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| CN201911087685.7A Pending CN110804723A (en) | 2019-11-08 | 2019-11-08 | Heat treatment method for saw blade production |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113953594A (en) * | 2021-11-12 | 2022-01-21 | 福建恒而达新材料股份有限公司 | Equipment and process for machining saw blade of tooth welding belt |
| CN114346322A (en) * | 2021-12-08 | 2022-04-15 | 江阴金缘锯业有限公司 | Preparation process of bimetallic strip saw blade |
| CN114473051A (en) * | 2022-02-24 | 2022-05-13 | 江苏美特森切削工具有限公司 | Cutting saw blade with temperature control function and manufacturing method and device |
-
2019
- 2019-11-08 CN CN201911087685.7A patent/CN110804723A/en active Pending
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113953594A (en) * | 2021-11-12 | 2022-01-21 | 福建恒而达新材料股份有限公司 | Equipment and process for machining saw blade of tooth welding belt |
| CN113953594B (en) * | 2021-11-12 | 2022-08-12 | 福建恒而达新材料股份有限公司 | Equipment and process for machining saw blade of tooth welding belt |
| CN114346322A (en) * | 2021-12-08 | 2022-04-15 | 江阴金缘锯业有限公司 | Preparation process of bimetallic strip saw blade |
| CN114473051A (en) * | 2022-02-24 | 2022-05-13 | 江苏美特森切削工具有限公司 | Cutting saw blade with temperature control function and manufacturing method and device |
| CN114473051B (en) * | 2022-02-24 | 2023-08-15 | 江苏美特森切削工具有限公司 | Manufacturing method and device of cutting saw blade with temperature control function |
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Application publication date: 20200218 |
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| WD01 | Invention patent application deemed withdrawn after publication |