CN107805696A - A kind of heattreatment of spring method - Google Patents
A kind of heattreatment of spring method Download PDFInfo
- Publication number
- CN107805696A CN107805696A CN201711426803.3A CN201711426803A CN107805696A CN 107805696 A CN107805696 A CN 107805696A CN 201711426803 A CN201711426803 A CN 201711426803A CN 107805696 A CN107805696 A CN 107805696A
- Authority
- CN
- China
- Prior art keywords
- temperature
- spring
- taken out
- heattreatment
- tempered
- 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.)
- Pending
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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
- C21D1/26—Methods of annealing
-
- 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
- C21D9/02—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor for springs
Abstract
A kind of heattreatment of spring method, comprises the following steps：（1）Annealing and normalized treatment：Spring is mounted in iron case, is placed in temperature type resistance furnace and carries out heating anneal, annealing temperature is 860 ~ 880 DEG C, is incubated 4h, after insulation, iron case is taken out from stove, is air-cooled to room temperature；（2）Quenching：After insulation, iron case is taken out from heating furnace, case is opened, taken out spring and quenched, Quenching Treatment temperature is 350 ~ 400 DEG C；（3）It is tempered for the first time：By being tempered after being taken out in oil, heating-up temperature is 380 DEG C, is incubated 20min, by being taken out in stove, air is cooled to room temperature；（4）Second of tempering：Carry out being tempered for second after cooling, temperature is 520 ~ 540 DEG C, is incubated 60min；（5）Cooling：Water cooling or air-cooled Cooling Mode are used after tempering, prevents temper brittleness.The technique of the present invention is simple, easy control of temperature, and the hardness, toughness, fatigue resistance of spring leaf can be improved by this method processing, extends the service life of spring.
Description
Technical field
The present invention relates to mechanical hot processing, more particularly to a kind of heattreatment of spring method.
Background technology
Heattreatment of spring method, which is generally, to be preheated, heats, being incubated, cooling down, is tempered insulation, cools down, the quenching temperature of spring steel
Degree is generally 450 degrees centigrades, if temperature and soaking time control are bad, the consequence finally resulted in is that ferrite can not be complete
Fully dissolved.And the thermal stress occurred when also simply eliminating quenching is tempered, influence quality and the life-span of spring.
The content of the invention
The invention provides a kind of heattreatment of spring method, its easy to operate, quick and easy left-hand seat.
In order to reach foregoing invention purpose, the technical solution adopted by the present invention is：
A kind of heattreatment of spring method, comprises the following steps：
（1）Annealing and normalized treatment：Spring is mounted in iron case, is placed in temperature type resistance furnace and carries out heating anneal, annealing temperature
Spend for 860 ~ 880 DEG C, be incubated 4h, after insulation, iron case taken out from stove, is air-cooled to room temperature；
（2）Quenching：After insulation, iron case is taken out from heating furnace, case is opened, taken out spring and quenched, Quenching Treatment temperature
For 350 ~ 400 DEG C；
（3）It is tempered for the first time：By being tempered after being taken out in oil, heating-up temperature is 380 DEG C, is incubated 20min, by being taken out in stove,
Air is cooled to room temperature；
（4）Second of tempering：Carry out being tempered for second after cooling, temperature is 520 ~ 540 DEG C, is incubated 60min；
（5）Cooling：Water cooling or air-cooled Cooling Mode are used after tempering, prevents temper brittleness.
Preferably, case inner circle biscuit surrounding puts charcoal, iron case lid loess and sand closing during annealing.
Preferably, shaft-like suspender, and horizontal quenching are penetrated when quenching shove charge in spring inside diameter, prevents spiral workpiece from becoming
Shape.
Preferably, hardening media selection steel alloy is hardening media using oil, uses water oil hardening.
Preferably, from the tempering furnace with blower fan, the uniformity of tempering is increased.
Beneficial effects of the present invention are：Technique is simple, easy control of temperature, and can improve spring leaf by this method processing
Hardness, toughness, fatigue resistance, extend the service life of spring.
Embodiment
In order that present disclosure is easier to be clearly understood, below by the technical scheme in the embodiment of the present invention
It is clearly and completely described.
A kind of heattreatment of spring method, comprises the following steps：
（1）Annealing and normalized treatment：Spring is mounted in iron case, is placed in temperature type resistance furnace and carries out heating anneal, annealing temperature
Spend for 860 ~ 880 DEG C, be incubated 4h, after insulation, iron case taken out from stove, is air-cooled to room temperature；
（2）Quenching：After insulation, iron case is taken out from heating furnace, case is opened, taken out spring and quenched, Quenching Treatment temperature
For 350 ~ 400 DEG C；
（3）It is tempered for the first time：By being tempered after being taken out in oil, heating-up temperature is 380 DEG C, is incubated 20min, by being taken out in stove,
Air is cooled to room temperature；
（4）Second of tempering：Carry out being tempered for second after cooling, temperature is 520 ~ 540 DEG C, is incubated 60min；
（5）Cooling：Water cooling or air-cooled Cooling Mode are used after tempering, prevents temper brittleness.
Preferably, case inner circle biscuit surrounding puts charcoal, iron case lid loess and sand closing during annealing.
Preferably, shaft-like suspender, and horizontal quenching are penetrated when quenching shove charge in spring inside diameter, prevents spiral workpiece from becoming
Shape.
Preferably, hardening media selection steel alloy is hardening media using oil, uses water oil hardening.
Preferably, from the tempering furnace with blower fan, the uniformity of tempering is increased.
Beneficial effects of the present invention are：Technique is simple, easy control of temperature, and can improve spring leaf by this method processing
Hardness, toughness, fatigue resistance, extend the service life of spring.
The preferred embodiment of patent of the present invention is the foregoing is only, is not intended to limit the invention patent, it is all at this
All any modification, equivalent and improvement made within the spirit and principle of patent of invention etc., should be included in patent of the present invention
Protection domain within.
Claims (5)
- A kind of 1. heattreatment of spring method, it is characterised in that comprise the following steps：（1）Annealing and normalized treatment：Spring is mounted in iron case, is placed in temperature type resistance furnace and carries out heating anneal, annealing temperature Spend for 860 ~ 880 DEG C, be incubated 4h, after insulation, iron case taken out from stove, is air-cooled to room temperature；（2）Quenching：After insulation, iron case is taken out from heating furnace, case is opened, taken out spring and quenched, Quenching Treatment temperature For 350 ~ 400 DEG C；（3）It is tempered for the first time：By being tempered after being taken out in oil, heating-up temperature is 380 DEG C, is incubated 20min, by being taken out in stove, Air is cooled to room temperature；（4）Second of tempering：Carry out being tempered for second after cooling, temperature is 520 ~ 540 DEG C, is incubated 60min；（5）Cooling：Water cooling or air-cooled Cooling Mode are used after tempering, prevents temper brittleness.
- A kind of 2. heattreatment of spring method according to claim 1, it is characterised in that：Case inner circle biscuit surrounding is put during annealing Charcoal, iron case lid loess and sand closing.
- A kind of 3. heattreatment of spring method according to claim 1, it is characterised in that：When quenching shove charge in spring inside diameter Shaft-like suspender, and horizontal quenching are penetrated, prevents spiral workpiece from deforming.
- A kind of 4. heattreatment of spring method according to claim 1, it is characterised in that：Hardening media selection steel alloy uses Oil is hardening media, uses water oil hardening.
- A kind of 5. heattreatment of spring method according to claim 1, it is characterised in that：From the tempering furnace with blower fan, increase The uniformity of add-back fire.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711426803.3A CN107805696A (en) | 2017-12-26 | 2017-12-26 | A kind of heattreatment of spring method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711426803.3A CN107805696A (en) | 2017-12-26 | 2017-12-26 | A kind of heattreatment of spring method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107805696A true CN107805696A (en) | 2018-03-16 |
Family
ID=61590087
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711426803.3A Pending CN107805696A (en) | 2017-12-26 | 2017-12-26 | A kind of heattreatment of spring method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107805696A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110358893A (en) * | 2019-07-25 | 2019-10-22 | 诸暨市裕荣弹簧有限公司 | A kind of preparation process of scroll spring |
-
2017
- 2017-12-26 CN CN201711426803.3A patent/CN107805696A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110358893A (en) * | 2019-07-25 | 2019-10-22 | 诸暨市裕荣弹簧有限公司 | A kind of preparation process of scroll spring |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| WD01 | Invention patent application deemed withdrawn after publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20180316 |