CN107723714A - A kind of heat treatment method of shear blade - Google Patents
A kind of heat treatment method of shear blade Download PDFInfo
- Publication number
- CN107723714A CN107723714A CN201710938434.XA CN201710938434A CN107723714A CN 107723714 A CN107723714 A CN 107723714A CN 201710938434 A CN201710938434 A CN 201710938434A CN 107723714 A CN107723714 A CN 107723714A
- Authority
- CN
- China
- Prior art keywords
- degrees celsius
- shear blade
- hours
- temperature
- heat treatment
- 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.)
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Classifications
-
- 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
- C23F—NON-MECHANICAL REMOVAL OF METALLIC MATERIAL FROM SURFACE; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL; MULTI-STEP PROCESSES FOR SURFACE TREATMENT OF METALLIC MATERIAL INVOLVING AT LEAST ONE PROCESS PROVIDED FOR IN CLASS C23 AND AT LEAST ONE PROCESS COVERED BY SUBCLASS C21D OR C22F OR CLASS C25
- C23F17/00—Multi-step processes for surface treatment of metallic material involving at least one process provided for in class C23 and at least one process covered by subclass C21D or C22F or class C25
-
- 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
- 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
- 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
- C23C8/06—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 gases
- C23C8/28—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 gases more than one element being applied in one step
- C23C8/30—Carbo-nitriding
- C23C8/32—Carbo-nitriding of ferrous surfaces
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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)
- Solid-Phase Diffusion Into Metallic Material Surfaces (AREA)
- Heat Treatment Of Articles (AREA)
Abstract
A kind of heat treatment method of shear blade technique includes following steps：（1）Mild steel of the carbon content less than 0.45% is forged into shear blade type, and blade is soaked three hours in machine oil；（2）6 hours are kept in 900 degrees Celsius 1000 degrees Celsius of temperature；（3）It is subsequently cooled to room temperature；The tempering 4 hours to 900 degrees Celsius is being carried out degree Celsius, is being cooled to room temperature；600 degrees Celsius to 700 degrees Celsius are carried out after processing and is incubated 8 hours；（4）By shear blade delayed quenching, the cooling of short time is first carried out in atmosphere, when workpiece is down to 20 degrees Celsius of temperature, then is immersed in quartz sand and is cooled down, is then heat-treated, including carbo-nitriding processing, Quenching Treatment, subzero treatment and temper.Shear blade after present invention heat treatment has that quality is good, wear-resisting, corrosion-resistant, enhances service life, cost is cheap and is easy to promote, and reduces the discharge of pernicious gas in process of production, reduces cost of manufacture.
Description
Technical field
The present invention relates to technical field of heat treatment, more particularly to a kind of heat treatment method of shear blade.
Background technology
The material of shear blade is mainly low-carbon alloy steel at present, at present low-carbon alloy steel heat treatment, and conventional processing includes
Annealing, quenched, elimination stress, high-frequency quenching, lonneal, the performance of low-carbon alloy steel is mainly according to Technology for Heating Processing
Determine, but can be with high pollution during heat treatment, the major pollutants for causing high pollution are carbon dioxide and dioxy
Change the discharge of the pernicious gases such as sulphur, the usual hardness of shear blade after processing is inadequate, and wearability and service life all reduce.
The content of the invention
The purpose of the present invention is shortcoming present in solution background technology, there is provided a kind of heat treatment method of shear blade.
A kind of heat treatment method of shear blade, it is characterised in that：The technique includes following steps：
（1）Mild steel of the carbon content less than 0.45% is forged into shear blade type, and blade is soaked three hours in machine oil.
（2）6 hours are kept in 900 degrees Celsius to 1000 degrees Celsius of temperature.
（3）Room temperature is subsequently cooled to, 700 degrees Celsius to 900 degrees Celsius of tempering 4 hours is being carried out, is being cooled to room temperature；
600 degrees Celsius to 700 degrees Celsius are carried out after processing and is incubated 8 hours.
（4）By shear blade delayed quenching, the cooling of short time is first carried out in atmosphere, it is Celsius to treat that workpiece is down to temperature 20
When spending, then immerse in quartz sand and cool down, be then heat-treated, including carbo-nitriding processing, Quenching Treatment, subzero treatment and
Temper.
（5）Carbo-nitriding is handled, and absolute methanol is added dropwise under 850 to 870 degrees Celsius, continues 60 minutes, then coal is added dropwise
Oil per minute is passed through ammonia 150 to 180 minutes with 160 to 200 milliliters simultaneously；It is cooled to 650 to 750 degrees Celsius and nothing is added dropwise again
Water methanol is with 80 to 120 milliliters of ammonias 90 to 120 minutes per minute of being passed through to room temperature.
（6）Quenching Treatment, the alloy oil quenching that carbo-nitriding is handled, 850 to 860 degrees Celsius of temperature, insulation 40 to 60
Minute, cooling.
（7）Subzero treatment, subzero treatment medium liquid nitrogen, 150 to subzero 160 degrees Celsius under zero temperature, continue 24 hours.
（8）Temper, the alloy after subzero treatment is incubated 100 minutes under 200 to 220 degrees Celsius, air cooling is
Into.
Beneficial effect of the present invention：Shear blade after present invention heat treatment has quality good, and wear-resisting, corrosion-resistant, enhancing makes
With the life-span, cost is cheap and is easy to promote, and reduces the discharge of pernicious gas in process of production, reduces cost of manufacture.
Embodiment
A kind of heat treatment method of shear blade, it is characterised in that：The technique includes following steps：
（1）Mild steel of the carbon content less than 0.45% is forged into shear blade type, and blade is soaked three hours in machine oil.
（2）6 hours are kept in 900 degrees Celsius to 1000 degrees Celsius of temperature.
（3）Room temperature is subsequently cooled to, 700 degrees Celsius to 900 degrees Celsius of tempering 4 hours is being carried out, is being cooled to room temperature；
600 degrees Celsius to 700 degrees Celsius are carried out after processing and is incubated 8 hours.
（4）By shear blade delayed quenching, the cooling of short time is first carried out in atmosphere, it is Celsius to treat that workpiece is down to temperature 20
When spending, then immerse in quartz sand and cool down, be then heat-treated, including carbo-nitriding processing, Quenching Treatment, subzero treatment and
Temper.
（5）Carbo-nitriding is handled, and absolute methanol is added dropwise under 850 to 870 degrees Celsius, continues 60 minutes, then coal is added dropwise
Oil per minute is passed through ammonia 150 to 180 minutes with 160 to 200 milliliters simultaneously；It is cooled to 650 to 750 degrees Celsius and nothing is added dropwise again
Water methanol is with 80 to 120 milliliters of ammonias 90 to 120 minutes per minute of being passed through to room temperature.
（6）Quenching Treatment, the alloy oil quenching that carbo-nitriding is handled, 850 to 860 degrees Celsius of temperature, insulation 40 to 60
Minute, cooling.
（7）Subzero treatment, subzero treatment medium liquid nitrogen, 150 to subzero 160 degrees Celsius under zero temperature, continue 24 hours.
（8）Temper, the alloy after subzero treatment is incubated 100 minutes under 200 to 220 degrees Celsius, air cooling is
Into.
The foregoing is only a preferred embodiment of the present invention, but protection scope of the present invention be not limited to
This, any one skilled in the art the invention discloses technical scope in, technique according to the invention scheme
And its inventive concept is subject to equivalent substitution or change, should all be included within the scope of the present invention.
Claims (1)
- A kind of 1. heat treatment method of shear blade, it is characterised in that：The technique includes following steps：（1）Carbon content is small Mild steel in 0.45% forges into shear blade type, and blade is soaked three hours in machine oil,（2）At 900 degrees Celsius to 1000 Degree Celsius temperature in keep 6 hours,（3）Room temperature is subsequently cooled to, is carrying out 700 degrees Celsius to 900 degrees Celsius of tempering 4 hours, room temperature is cooled to,（4）By shear blade delayed quenching, the cooling of short time is first carried out in atmosphere, treats that workpiece is down to temperature When spending 20 degrees Celsius, then immerse in quartz sand and cool down, be then heat-treated, including carbo-nitriding processing, Quenching Treatment, deep cooling Processing and temper.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710938434.XA CN107723714A (en) | 2017-10-11 | 2017-10-11 | A kind of heat treatment method of shear blade |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710938434.XA CN107723714A (en) | 2017-10-11 | 2017-10-11 | A kind of heat treatment method of shear blade |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107723714A true CN107723714A (en) | 2018-02-23 |
Family
ID=61210154
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710938434.XA Pending CN107723714A (en) | 2017-10-11 | 2017-10-11 | A kind of heat treatment method of shear blade |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107723714A (en) |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1262156A (en) * | 2000-03-13 | 2000-08-09 | 张云寿 | Disk-type shear knife and its heat treating technology |
| CN103805753A (en) * | 2013-10-15 | 2014-05-21 | 刘强 | Low-carbon alloy steel heat treatment process |
| CN103834786A (en) * | 2012-11-27 | 2014-06-04 | 大连经济技术开发区圣洁真空技术开发有限公司 | Heat treatment method of mechanical blade |
-
2017
- 2017-10-11 CN CN201710938434.XA patent/CN107723714A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1262156A (en) * | 2000-03-13 | 2000-08-09 | 张云寿 | Disk-type shear knife and its heat treating technology |
| CN103834786A (en) * | 2012-11-27 | 2014-06-04 | 大连经济技术开发区圣洁真空技术开发有限公司 | Heat treatment method of mechanical blade |
| CN103805753A (en) * | 2013-10-15 | 2014-05-21 | 刘强 | Low-carbon alloy steel heat treatment process |
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| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20180223 |
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| RJ01 | Rejection of invention patent application after publication |