CN108330256A - A kind of quenching technical of hard-wearing pin - Google Patents
A kind of quenching technical of hard-wearing pin Download PDFInfo
- Publication number
- CN108330256A CN108330256A CN201810255046.6A CN201810255046A CN108330256A CN 108330256 A CN108330256 A CN 108330256A CN 201810255046 A CN201810255046 A CN 201810255046A CN 108330256 A CN108330256 A CN 108330256A
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- CN
- China
- Prior art keywords
- hard
- wearing pin
- flame
- wearing
- pin
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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
- 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
- C21D1/00—General methods or devices for heat treatment, e.g. annealing, hardening, quenching or tempering
- C21D1/34—Methods of heating
- C21D1/52—Methods of heating with flames
-
- 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
- C21D1/56—General methods or devices for heat treatment, e.g. annealing, hardening, quenching or tempering characterised by the quenching agents
- C21D1/613—Gases; Liquefied or solidified normally gaseous material
-
- 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
- C21D9/0068—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor for particular articles not mentioned below
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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 discloses a kind of quenching technical of hard-wearing pin, (1) preposition processing；Hard-wearing pin is cleaned and dried, hard-wearing pin needs to preheat before flame heating, and the pre-warmed mode is to be heated to cool down in air after 200~285 DEG C of temperature by hard-wearing pin, ensures cooling time at 10~20 minutes and is cooled to 18 DEG C~26 DEG C；(2) flame heats；The preposition hard-wearing pin handled well is heated using direct flame contact, hard-wearing pin is heated to 800 DEG C, and keep the temperature 0.5~0.8 hour, cooling in mixture of ice and water is then placed in take out rapidly after 3~5 seconds, 4~6 minutes are stood under 18 DEG C~26 DEG C of room temperature environment, then fan mouth outlet air end that hard-wearing pin is placed in flowing is air-cooled to more than martensite transformation temperature；When flame heats, the injection direction of flame is arranged along the radial direction of hard-wearing pin and hard-wearing pin is with certain rotating speed rotation, surface 1~1.4mm of the flame core away from hard-wearing pin of flame.This technique can so that hard-wearing pin is more wear-resisting and has higher intensity.
Description
Technical field
The invention belongs to quenching technology field more particularly to a kind of process for quenching of the pin with wear-resisting property.
Background technology
The quenching of steel is that steel is heated to critical-temperature Ac3 or Ac1 temperatures above, heat preservation a period of time, be allowed to all or
Then partial saturation is as cold as Ms or less with the cooling rate more than critical cooling rate and carries out martensite (or bainite) transformation soon
Heat treatment process.Generally also by the solution treatment of the materials such as aluminium alloy, copper alloy, titanium alloy, tempered glass or with quick
The heat treatment process of cooling procedure is known as quenching.It is most common that have water hardening, oil quenchinng, dry quenching etc., pin be common
A kind of positioning link, existing a kind of pin not only needs higher intensity, also to have higher wearability, it is therefore desirable to right
Hard-wearing pin carries out quenching treatment, and when being quenched to pin, above-mentioned three kinds of the one of which quenching mode of generally use carries out
Quenching, application limitation is excessive, its quenching effect is not ideal enough for hard-wearing pin, it is difficult to so that hard-wearing pin has simultaneously
Intensity and hardness.
Invention content
It is an object of the invention to solve above-mentioned technical problem, a kind of quenching technical of hard-wearing pin, the quenching technical are provided
It can make the surface of hard-wearing pin that there is higher wearability, while promote the intensity of entire hard-wearing pin.
Technical scheme is as follows：
A kind of quenching technical of hard-wearing pin, carries out according to the following steps；
(1) preposition processing；The surface clean of hard-wearing pin is dried, and ensures that wear-resisting pin surface must not have crackle, oxidation de-
Carbon, trachoma and stomata, hard-wearing pin need to preheat before flame heating, and the pre-warmed mode is to be heated to hard-wearing pin
It is cooled down in air after 200~285 DEG C of temperature, ensure cooling time at 10~20 minutes and is cooled to 18 DEG C~26 DEG C；
(2) flame heats；The preposition hard-wearing pin handled well is heated using direct flame contact, hard-wearing pin is heated to
800 DEG C or more, and 0.5~0.8 hour is kept the temperature, it is then placed in cooling in mixture of ice and water and is taken out rapidly after 3~5 seconds, at 18 DEG C
4~6 minutes are stood under~26 DEG C of room temperature environment, then fan mouth outlet air end that hard-wearing pin is placed in flowing is air-cooled to martensite
It is more than transition temperature；When flame heats, the injection direction of flame is arranged along the radial direction of hard-wearing pin and hard-wearing pin is turned with certain
Fast rotation, surface 1~1.4mm of the flame core away from hard-wearing pin of flame.
Further, the surface clean of the hard-wearing pin is cleaned using the mixture that hydrochloric acid, sulfuric acid and water are constituted, and salt
Acid, sulfuric acid and water are calculated as 3 by weight:1:10.
Further, the hard-wearing pin in preposition processing is no more than 70 DEG C using drying machine drying and drying temperature.
Further, the pre-warmed mode is to be heated to cool down in air after 253 DEG C of temperature by hard-wearing pin, cold
But the time ensures at 15 minutes and is cooled to 22 DEG C.
Further, the flame is oxy arc, and surface 1.4mm of the flame core of flame away from hard-wearing pin.
Further, hard-wearing pin is heated to 880 DEG C, and keeps the temperature 0.7 hour, be then placed in mixture of ice and water cooling 4
It is taken out rapidly after second, 5 minutes is stood under 20 DEG C of room temperature environment.
Further, the wind speed that the fan generates is 5~15m/s.
Further, the wind speed that the fan generates is 13m/s.
Further, hard-wearing pin is placed in flowing fan mouth outlet air end it is air-cooled when, hard-wearing pin is placed in air-cooled container,
Coolant liquid is filled in the container, the coolant liquid is the mixture of the zinc of liquid and the tin of liquid, wherein the weight hundred of liquid tin
Point than being percent 80%, the cooling-liquid level in container is parallel with the air-out wind direction of the fan and positioned at the cooling wind flowed
Lower section.
Beneficial effects of the present invention：The quenching that hard-wearing pin is carried out by method provided by the invention, can make hard-wearing pin
Surface has higher wearability, while entire hard-wearing pin has high intensity, for existing tradition quenching,
More adaptable, effect is more preferable.
Specific implementation mode
Illustrate that embodiments of the present invention, those skilled in the art can be by this explanations by particular specific embodiment below
Content disclosed by book understands other advantages and effect of the present invention easily.
With reference to embodiment, the invention will be further described：
A kind of quenching technical of hard-wearing pin, carries out according to the following steps:
(1) preposition processing；The surface clean of hard-wearing pin is dried, and ensures that wear-resisting pin surface must not have crackle, oxidation de-
Carbon, trachoma and stomata, hard-wearing pin need to preheat before flame heating, and the pre-warmed mode is to be heated to hard-wearing pin
It is cooled down in air after 200~285 DEG C of temperature, ensure cooling time at 10~20 minutes and is cooled to 18 DEG C~26 DEG C.
(2) flame heats；The preposition hard-wearing pin handled well is heated using direct flame contact, hard-wearing pin is heated to
800 DEG C or more, and 0.5~0.8 hour is kept the temperature, it is then placed in cooling in mixture of ice and water and is taken out rapidly after 3~5 seconds, at 18 DEG C
4~6 minutes are stood under~26 DEG C of room temperature environment, then fan mouth outlet air end that hard-wearing pin is placed in flowing is air-cooled to martensite
It is more than transition temperature；When flame heats, the injection direction of flame is arranged along the radial direction of hard-wearing pin and hard-wearing pin is turned with certain
Fast rotation, surface 1~1.4mm of the flame core away from hard-wearing pin of flame.
As embodiment, the surface clean of the hard-wearing pin is cleaned using the mixture that hydrochloric acid, sulfuric acid and water are constituted, and salt
Acid, sulfuric acid and water are calculated as 3 by weight:1:10.Hard-wearing pin table can comparatively fast and thoroughly be understood using the cleaning solution of the proportioning
The residual soil in face establishes more solid foundation for the implementation of subsequent quenching process.
As embodiment, the hard-wearing pin in preposition processing is no more than 70 DEG C using drying machine drying and drying temperature, drying
Machine drying rate is fast, and dry temperature will not destroy hard-wearing pin internal organizational structure.
As embodiment, the pre-warmed mode is to be heated to cool down in air after 253 DEG C of temperature by hard-wearing pin,
Ensure cooling time at 15 minutes and is cooled to 22 DEG C.The good cooling results under the temperature and time can obtain and more stablize
Hard-wearing pin, preferably to match various process parameters when subsequent quenching process executes.
As embodiment, the flame is oxy arc, and surface 1.4mm of the flame core of flame away from hard-wearing pin, according to multiple
Verification experimental verification is obtained using oxy arc when surface 1.4mm of the flame core away from hard-wearing pin is heated, to hard-wearing pin inside metallographic
Variation effect is ideal.
As embodiment, hard-wearing pin is heated to 880 DEG C, and keep the temperature 0.7 hour, be then placed in mixture of ice and water cooling
It is taken out rapidly after 4 seconds, 5 minutes is stood under 20 DEG C of room temperature environment.The good cooling results under the temperature and time can obtain
More stable hard-wearing pin, preferably to match various process parameters when subsequent quenching process executes.
As embodiment, the wind speed that the fan generates is 5~15m/s.It can preferably be obtained in the wind speed range
The cooling effect of martensite transfor mation.
As embodiment, the wind speed that the fan generates is 13m/s.Geneva can be most preferably obtained in the wind speed range
The cooling effect of body transformation.
As embodiment, hard-wearing pin is placed in flowing fan mouth outlet air end it is air-cooled when, hard-wearing pin is placed in air-cooled container
It is interior, coolant liquid is filled in the container, the coolant liquid is the mixture of the zinc of liquid and the tin of liquid, wherein the weight of liquid tin
It is percent 80% to measure percentage, and the cooling-liquid level in container is parallel with the air-out wind direction of the fan and cold positioned at what is flowed
But below wind.
The above-described embodiments merely illustrate the principles and effects of the present invention, and is not intended to limit the present invention.It is any ripe
The personage for knowing this technology can all carry out modifications and changes to above-described embodiment without violating the spirit and scope of the present invention.Cause
This, institute is complete without departing from the spirit and technical ideas disclosed in the present invention by those of ordinary skill in the art such as
At all equivalent modifications or change, should by the present invention claim be covered.
Claims (9)
1. a kind of quenching technical of hard-wearing pin, it is characterised in that：It carries out according to the following steps；
(1) preposition processing；The surface clean of hard-wearing pin is dried, and ensures that wear-resisting pin surface must not have crackle, oxidation and decarbonization, sand
Eye and stomata, hard-wearing pin need to preheat before flame heating, the pre-warmed mode be hard-wearing pin is heated to 200~
It is cooled down in air after 285 DEG C of temperature, ensure cooling time at 10~20 minutes and is cooled to 18 DEG C~26 DEG C；
(2) flame heats；The preposition hard-wearing pin handled well is heated using direct flame contact, hard-wearing pin is heated to 800 DEG C
More than, and 0.5~0.8 hour is kept the temperature, it is then placed in cooling in mixture of ice and water and is taken out rapidly after 3~5 seconds, at 18 DEG C~26 DEG C
Room temperature environment under stand 4~6 minutes, then fan mouth outlet air end that hard-wearing pin is placed in flowing is air-cooled to martensite transfor mation temperature
Degree or more；When flame heats, the radial setting and hard-wearing pin of the injection direction of flame along hard-wearing pin with certain rotating speed rotation,
Surface 1~1.4mm of the flame core of flame away from hard-wearing pin.
2. the quenching technical of hard-wearing pin according to claim 1, it is characterised in that：The surface clean of the hard-wearing pin uses salt
The mixture that acid, sulfuric acid and water are constituted cleans, and hydrochloric acid, sulfuric acid and water are calculated as 3 by weight:1:10.
3. the quenching technical of hard-wearing pin according to claim 1 or claim 2, it is characterised in that：Hard-wearing pin in preposition processing uses
Drying machine drying and drying temperature are no more than 70 DEG C.
4. the quenching technical of hard-wearing pin according to claim 3, it is characterised in that：The pre-warmed mode is by hard-wearing pin
It is cooled down in air after being heated to 253 DEG C of temperature, ensure cooling time at 15 minutes and is cooled to 22 DEG C.
5. the quenching technical of hard-wearing pin according to claim 4, it is characterised in that：The flame is oxy arc, and flame
Surface 1.4mm of the flame core away from hard-wearing pin.
6. the quenching technical of hard-wearing pin according to claim 5, it is characterised in that：Hard-wearing pin is heated to 880 DEG C, and is kept the temperature
It 0.7 hour, is then placed in cooling in mixture of ice and water and is taken out rapidly after 4 seconds, 5 minutes are stood under 20 DEG C of room temperature environment.
7. the quenching technical of hard-wearing pin according to claim 6, it is characterised in that：The wind speed that the fan generates is 5~
15m/s。
8. the quenching technical of hard-wearing pin according to claim 7, it is characterised in that：The wind speed that the fan generates is 13m/s.
9. the quenching technical of hard-wearing pin according to claim 8, it is characterised in that：The fan mouth that hard-wearing pin is placed in flowing goes out
When wind end is air-cooled, hard-wearing pin is placed in air-cooled container, coolant liquid is filled in the container, the coolant liquid is the zinc and liquid of liquid
The mixture of the tin of state, wherein the weight percent of liquid tin is percent 80%, the cooling-liquid level in container and the wind
The air-out wind direction of fan is parallel and below the cooling wind of flowing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810255046.6A CN108330256A (en) | 2018-03-27 | 2018-03-27 | A kind of quenching technical of hard-wearing pin |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810255046.6A CN108330256A (en) | 2018-03-27 | 2018-03-27 | A kind of quenching technical of hard-wearing pin |
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| Publication Number | Publication Date |
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| CN108330256A true CN108330256A (en) | 2018-07-27 |
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| CN201810255046.6A Pending CN108330256A (en) | 2018-03-27 | 2018-03-27 | A kind of quenching technical of hard-wearing pin |
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Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101265516A (en) * | 2008-04-23 | 2008-09-17 | 浙江佰耐钢带有限公司 | Steel band quenching technique and cooling medium used for the same |
| CN104289858A (en) * | 2013-07-16 | 2015-01-21 | 无锡华冶钢铁有限公司 | 42CrMoE structural alloy steel material and pin shaft processing method |
-
2018
- 2018-03-27 CN CN201810255046.6A patent/CN108330256A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101265516A (en) * | 2008-04-23 | 2008-09-17 | 浙江佰耐钢带有限公司 | Steel band quenching technique and cooling medium used for the same |
| CN104289858A (en) * | 2013-07-16 | 2015-01-21 | 无锡华冶钢铁有限公司 | 42CrMoE structural alloy steel material and pin shaft processing method |
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Application publication date: 20180727 |