CN109371226A - A kind of annealing regulation method of the spring washer of automation control - Google Patents
A kind of annealing regulation method of the spring washer of automation control Download PDFInfo
- Publication number
- CN109371226A CN109371226A CN201811113423.9A CN201811113423A CN109371226A CN 109371226 A CN109371226 A CN 109371226A CN 201811113423 A CN201811113423 A CN 201811113423A CN 109371226 A CN109371226 A CN 109371226A
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- Prior art keywords
- annealing
- spring washer
- regulation method
- methanol
- temperature
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Classifications
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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
- C21D11/00—Process control or regulation for heat treatments
-
- 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
- C21D1/00—General methods or devices for heat treatment, e.g. annealing, hardening, quenching or tempering
- C21D1/74—Methods of treatment in inert gas, controlled atmosphere, vacuum or pulverulent material
- C21D1/76—Adjusting the composition of the atmosphere
-
- 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
The present invention relates to a kind of annealing regulation methods of the spring washer of automation control.This method is simultaneously using the annealing atmosphere and two-part annealing process of nitrogen after first methanol, so that the hardness and structural homogenity of spring washer are good, and surfacing, the smooth of the edge, impulse- free robustness phenomenon.
Description
Technical field
The present invention relates to the annealing field of spring washer more particularly to a kind of annealing controls of the spring washer of automation control
Method processed.
Background technique
It is existing in processed springs washer, the usual hardness of used raw material and nonuniform organization.In the case, such as
Fruit directly quenches it or is tempered, it will causes the mechanical property of spring washer bad, to influence making for spring washer
Use effect.Therefore, the annealing process of spring washer is technique emphasis, by effectively annealing, spring washer not only hardness and tissue
Uniformity is good, and surfacing, the smooth of the edge, impulse- free robustness phenomenon.However, the annealing regulation method of existing spring washer is still
It is not able to satisfy the demand.
Summary of the invention
The purpose of the present invention is to provide a kind of annealing regulation methods of the spring washer of automation control.
To achieve the above object, technical scheme is as follows: a kind of annealing control of the spring washer of automation control
Method processed, described method includes following steps:
Step 1: spring washer is put into annealing device；
Step 2: being filled with methanol into annealing device；It monitors to continue to be filled with one timing of methanol after air is drained in annealing device
Between；
Step 3: carrying out temperature programming, 750 DEG C are risen to from room temperature, is then kept the temperature, stops being filled with methanol after heat preservation；
Step 4: carrying out program cooling, 705 DEG C are down to from 750 DEG C, nitrogen should be filled in the process；
Step 5: keeping the temperature at 705 DEG C, 650 DEG C are then cooled to, stops being passed through nitrogen after cooling, starts simultaneously at discharge gas
Body；
Step 6: taking out spring washer when in-furnace temperature is lower than 550 DEG C, being air-cooled to room temperature.
Annealing regulation method according to the present invention, wherein the methanol flow is 20-60cc/min.
Preferably, the methanol flow is 25-55cc/min；It is highly preferred that the methanol flow is 30-50cc/min；
And most preferably, the methanol flow is 35-45cc/min.
In a specific embodiment, the methanol flow is 40cc/min.
Annealing regulation method according to the present invention, wherein the time for continuing to be filled with methanol is 10-60min.
Preferably, the time for continuing to be filled with methanol is 15-55min；It is highly preferred that described continue to be filled with methanol
Time is 20-50min；And most preferably, the time for continuing to be filled with methanol is 25-40min.
In a specific embodiment, the time for continuing to be filled with methanol is 30min.
Annealing regulation method according to the present invention, wherein the heating rate of third step is 6-16 DEG C/min.
Preferably, the heating rate of third step is 7-14 DEG C/min；It is highly preferred that the heating rate of third step
For 8-13 DEG C/min；And most preferably, the heating rate of third step is 9-12 DEG C/min.
In a specific embodiment, the heating rate of third step is 10 DEG C/min.
Annealing regulation method according to the present invention, wherein the soaking time of third step is 50-150min.
Preferably, the soaking time of third step is 60-140min；It is highly preferred that the soaking time of third step
For 70-130min；And most preferably, the soaking time of third step is 80-120min.
In a specific embodiment, the soaking time of third step is 100min.
Annealing regulation method according to the present invention, wherein the rate of temperature fall of the 4th step be 0.1-0.9 DEG C/
min。
Preferably, the rate of temperature fall of the 4th step is 0.2-0.8 DEG C/min；It is highly preferred that the cooling of the 4th step
Rate is 0.3-0.7 DEG C/min；And most preferably, the rate of temperature fall of the 4th step is 0.4-0.6 DEG C/min.
In a specific embodiment, the rate of temperature fall of the 4th step is 0.5 DEG C/min.
Annealing regulation method according to the present invention, wherein the nitrogen flow of the 4th step is 60-120cc/min.
Preferably, the nitrogen flow of the 4th step is 70-110cc/min；It is highly preferred that the nitrogen stream of the 4th step
Amount is 80-100cc/min；And most preferably, the nitrogen flow of the 4th step is 85-95cc/min.
In a specific embodiment, the nitrogen flow of the 4th step is 90cc/min.
Annealing regulation method according to the present invention, wherein the soaking time of the 5th step is 180-300min.
Preferably, the soaking time of the 5th step is 200-280min；It is highly preferred that the soaking time of the 5th step
For 220-260min；And most preferably, the soaking time of the 5th step is 230-250min.
In a specific embodiment, the soaking time of the 5th step is 240min.
Annealing regulation method according to the present invention, wherein the rate of temperature fall of the 5th step be 0.5-1.5 DEG C/
min。
Preferably, the rate of temperature fall of the 5th step is 0.6-1.4 DEG C/min；It is highly preferred that the cooling of the 5th step
Rate is 0.8-1.2 DEG C/min；And most preferably, the rate of temperature fall of the 5th step is 0.9-1.1 DEG C/min.
In a specific embodiment, the rate of temperature fall of the 5th step is 1.0 DEG C/min.
Annealing regulation method according to the present invention, wherein the spring washer material is selected from 65Mn spring steel, 70 bullets
Spring steel, 60Si2Mn spring steel.
Preferably, the spring washer material is selected from 65Mn spring steel and 70 spring steel.
In a specific embodiment, the spring washer material is selected from 65Mn spring steel.
Annealing regulation method according to the present invention, wherein carried out using induction heating circle；And use photoelectric pyrometer
Measure heating temperature.
Compared with prior art, the annealing regulation method of the spring washer of automation control of the present invention is simultaneously using first methanol
The annealing atmosphere of nitrogen and two-part annealing process afterwards, so that the hardness and structural homogenity of spring washer are good, and surface
Smooth, the smooth of the edge, impulse- free robustness phenomenon.
Specific embodiment
Below with reference to embodiment, the present invention will be further described, but is not intended as the foundation limited the present invention.
Embodiment 1
Spring washer material is selected from 65Mn spring steel, specification 12mm.Spring washer is put into annealing device first.Then to
Methanol, methanol flow 40cc/min are filled in annealing device；It monitors to continue to be filled with methanol after air is drained in annealing device
30min.Temperature programming is carried out, rises to 750 DEG C from room temperature, heating rate is 10 DEG C/min, then keeps the temperature 100min, heat preservation terminates
Stop being filled with methanol afterwards.Program cooling is then carried out, rate of temperature fall is 0.5 DEG C/min, 705 DEG C is down to from 750 DEG C, during being somebody's turn to do
It is filled with nitrogen, nitrogen flow 90cc/min.240min is kept the temperature at 705 DEG C, is then cooled to 650 DEG C, rate of temperature fall 1.0
℃/min；Stop being passed through nitrogen after cooling, starts simultaneously at discharge gas.When in-furnace temperature is lower than 550 DEG C, spring is taken out
Washer is air-cooled to room temperature.
The bullet of spring washer after experimental condition testing example 1 as defined in GB/T 94.1-2008 is annealed according to national standards
Property and toughness.The result shows that it is spring washer thickness that elasticity, which is 2.46S(S).The hardness of spring washer uses THR-150D type Lip river
Family name's hardometer measurement, equably take five points along spring washer periphery middle line, according to numerical value it is ascending be followed successively by (h1,
H2, h3, h4, h5) it is averaged h, and calculate the hardness uniformity (h5-h1)/h × 100%.The hardness uniformity is 0.72%.Burr
Phenomenon uniformly takes nine points to measure using TR130 type contact pin type surfagauge in spring washer cut surface, calculates
Ra=45μm.Washer is sandwiched between vice and spanner, the two distance is equal to the 1/2 of washer outer diameter, by spanner along side clockwise
It is unbroken to slow 90 ° of torsion.
Embodiment 2
Spring washer material is selected from 65Mn spring steel, specification 12mm.Spring washer is put into annealing device first.Then to
Methanol, methanol flow 20cc/min are filled in annealing device；It monitors to continue to be filled with methanol after air is drained in annealing device
60min.Temperature programming is carried out, rises to 750 DEG C from room temperature, heating rate is 6 DEG C/min, 50min is then kept the temperature, after heat preservation
Stopping is filled with methanol.Program cooling is then carried out, rate of temperature fall is 0.1 DEG C/min, is down to 705 DEG C from 750 DEG C, should be filled in the process
Enter nitrogen, nitrogen flow 60cc/min.180min is kept the temperature at 705 DEG C, is then cooled to 650 DEG C, rate of temperature fall is 0.5 DEG C/
min；Stop being passed through nitrogen after cooling, starts simultaneously at discharge gas.When in-furnace temperature is lower than 550 DEG C, spring pad is taken out
Circle, is air-cooled to room temperature.
The bullet of spring washer after experimental condition testing example 1 as defined in GB/T 94.1-2008 is annealed according to national standards
Property and toughness.The result shows that it is spring washer thickness that elasticity, which is 2.17S(S).The hardness of spring washer uses THR-150D type Lip river
Family name's hardometer measurement, equably take five points along spring washer periphery middle line, according to numerical value it is ascending be followed successively by (h1,
H2, h3, h4, h5) it is averaged h, and calculate the hardness uniformity (h5-h1)/h × 100%.The hardness uniformity is 1.02%.Burr
Phenomenon uniformly takes nine points to measure using TR130 type contact pin type surfagauge in spring washer cut surface, calculates
Ra=62μm.Washer is sandwiched between vice and spanner, the two distance is equal to the 1/2 of washer outer diameter, by spanner along side clockwise
It is unbroken to slow 90 ° of torsion.
Embodiment 3
Spring washer material is selected from 65Mn spring steel, specification 12mm.Spring washer is put into annealing device first.Then to
Methanol, methanol flow 60cc/min are filled in annealing device；It monitors to continue to be filled with methanol after air is drained in annealing device
10min.Temperature programming is carried out, rises to 750 DEG C from room temperature, heating rate is 16 DEG C/min, then keeps the temperature 150min, heat preservation terminates
Stop being filled with methanol afterwards.Program cooling is then carried out, rate of temperature fall is 0.9 DEG C/min, 705 DEG C is down to from 750 DEG C, during being somebody's turn to do
It is filled with nitrogen, nitrogen flow 120cc/min.300min is kept the temperature at 705 DEG C, is then cooled to 650 DEG C, rate of temperature fall 1.5
℃/min；Stop being passed through nitrogen after cooling, starts simultaneously at discharge gas.When in-furnace temperature is lower than 550 DEG C, spring is taken out
Washer is air-cooled to room temperature.
The bullet of spring washer after experimental condition testing example 1 as defined in GB/T 94.1-2008 is annealed according to national standards
Property and toughness.The result shows that it is spring washer thickness that elasticity, which is 2.61S(S).The hardness of spring washer uses THR-150D type Lip river
Family name's hardometer measurement, equably take five points along spring washer periphery middle line, according to numerical value it is ascending be followed successively by (h1,
H2, h3, h4, h5) it is averaged h, and calculate the hardness uniformity (h5-h1)/h × 100%.The hardness uniformity is 1.20%.Burr
Phenomenon uniformly takes nine points to measure using TR130 type contact pin type surfagauge in spring washer cut surface, calculates
Ra=71μm.Washer is sandwiched between vice and spanner, the two distance is equal to the 1/2 of washer outer diameter, by spanner along side clockwise
It is unbroken to slow 90 ° of torsion.
Comparative example 1
Spring washer material is selected from 65Mn spring steel, specification 12mm.Spring washer is put into annealing device first.Then to
Nitrogen, nitrogen flow 40cc/min are filled in annealing device；It monitors to continue to be filled with nitrogen after air is drained in annealing device
30min.Temperature programming is carried out, rises to 750 DEG C from room temperature, heating rate is 10 DEG C/min, then keeps the temperature 100min, heat preservation terminates
Stop being filled with nitrogen afterwards.Program cooling is then carried out, rate of temperature fall is 0.5 DEG C/min, 705 DEG C is down to from 750 DEG C, during being somebody's turn to do
It is filled with methanol, methanol flow 90cc/min.240min is kept the temperature at 705 DEG C, is then cooled to 650 DEG C, rate of temperature fall 1.0
℃/min；Stop being passed through methanol after cooling, starts simultaneously at discharge gas.When in-furnace temperature is lower than 550 DEG C, spring is taken out
Washer is air-cooled to room temperature.
The bullet of spring washer after experimental condition testing example 1 as defined in GB/T 94.1-2008 is annealed according to national standards
Property and toughness.The result shows that it is spring washer thickness that elasticity, which is 1.71S(S).The hardness of spring washer uses THR-150D type Lip river
Family name's hardometer measurement, equably take five points along spring washer periphery middle line, according to numerical value it is ascending be followed successively by (h1,
H2, h3, h4, h5) it is averaged h, and calculate the hardness uniformity (h5-h1)/h × 100%.The hardness uniformity is 1.94%.Burr
Phenomenon uniformly takes nine points to measure using TR130 type contact pin type surfagauge in spring washer cut surface, calculates
Ra=93μm.Washer is sandwiched between vice and spanner, the two distance is equal to the 1/2 of washer outer diameter, by spanner along side clockwise
It is unbroken to slow 90 ° of torsion.
Comparative example 2
Spring washer material is selected from 65Mn spring steel, specification 12mm.Spring washer is put into annealing device first.Then to
Nitrogen, nitrogen flow 40cc/min are filled in annealing device；It monitors to continue to be filled with nitrogen after air is drained in annealing device
30min.Temperature programming is carried out, rises to 750 DEG C from room temperature, heating rate is 10 DEG C/min, then keeps the temperature 100min, heat preservation terminates
Stop being filled with nitrogen afterwards.Program cooling is then carried out, rate of temperature fall is 0.5 DEG C/min, 705 DEG C is down to from 750 DEG C, during being somebody's turn to do
Continue to be filled with nitrogen, nitrogen flow 90cc/min.240min is kept the temperature at 705 DEG C, is then cooled to 650 DEG C, and rate of temperature fall is
1.0℃/min；Stop being passed through nitrogen after cooling, starts simultaneously at discharge gas.When in-furnace temperature is lower than 550 DEG C, take out
Spring washer is air-cooled to room temperature.
The bullet of spring washer after experimental condition testing example 1 as defined in GB/T 94.1-2008 is annealed according to national standards
Property and toughness.The result shows that it is spring washer thickness that elasticity, which is 1.85S(S).The hardness of spring washer uses THR-150D type Lip river
Family name's hardometer measurement, equably take five points along spring washer periphery middle line, according to numerical value it is ascending be followed successively by (h1,
H2, h3, h4, h5) it is averaged h, and calculate the hardness uniformity (h5-h1)/h × 100%.The hardness uniformity is 2.31%.Burr
Phenomenon uniformly takes nine points to measure using TR130 type contact pin type surfagauge in spring washer cut surface, calculates
Ra=107μm.Washer is sandwiched between vice and spanner, the two distance is equal to the 1/2 of washer outer diameter, by spanner along clockwise
Direction slowly reverse 90 ° it is unbroken.
Comparative example 3
Spring washer material is selected from 65Mn spring steel, specification 12mm.Spring washer is put into annealing device first.Then to
Methanol, methanol flow 40cc/min are filled in annealing device；It monitors to continue to be filled with methanol after air is drained in annealing device
30min.Temperature programming is carried out, rises to 750 DEG C from room temperature, heating rate is 10 DEG C/min, then keeps the temperature 100min, heat preservation terminates
Stop being filled with methanol afterwards.Program cooling is then carried out, rate of temperature fall is 0.5 DEG C/min, 650 DEG C is down to from 750 DEG C, during being somebody's turn to do
It is filled with nitrogen, nitrogen flow 90cc/min.Stop being passed through nitrogen after cooling, starts simultaneously at discharge gas.When warm in furnace
When degree is lower than 550 DEG C, spring washer is taken out, room temperature is air-cooled to.
The bullet of spring washer after experimental condition testing example 1 as defined in GB/T 94.1-2008 is annealed according to national standards
Property and toughness.The result shows that it is spring washer thickness that elasticity, which is 1.92S(S).The hardness of spring washer uses THR-150D type Lip river
Family name's hardometer measurement, equably take five points along spring washer periphery middle line, according to numerical value it is ascending be followed successively by (h1,
H2, h3, h4, h5) it is averaged h, and calculate the hardness uniformity (h5-h1)/h × 100%.The hardness uniformity is 1.76%.Burr
Phenomenon uniformly takes nine points to measure using TR130 type contact pin type surfagauge in spring washer cut surface, calculates
Ra=79μm.Washer is sandwiched between vice and spanner, the two distance is equal to the 1/2 of washer outer diameter, by spanner along side clockwise
It is unbroken to slow 90 ° of torsion.
Through embodiment 1 compared with comparative example 1-2, the results showed that, using the annealing atmosphere of nitrogen after first methanol to improvement
The hardness uniformity and tissue homogeneous degree (i.e. the cut surface uniformity) have a significant impact；Pass through embodiment 1 and 3 phase of comparative example
Than, the results showed that, using two-part annealing process relative to one-part form annealing process to the improvement hardness uniformity and even tissue
Degree, which has, to be significantly affected.
The foregoing is only a preferred embodiment of the present invention, is not intended to restrict the invention, for the skill of this field
For art personnel, the invention may be variously modified and varied.All within the spirits and principles of the present invention, made any to repair
Change, equivalent replacement, improvement etc., should all be included in the protection scope of the present invention.
Claims (10)
1. a kind of annealing regulation method of the spring washer of automation control, described method includes following steps:
Step 1: spring washer is put into annealing device；
Step 2: being filled with methanol into annealing device；It monitors to continue to be filled with one timing of methanol after air is drained in annealing device
Between；
Step 3: carrying out temperature programming, 750 DEG C are risen to from room temperature, is then kept the temperature, stops being filled with methanol after heat preservation；
Step 4: carrying out program cooling, 705 DEG C are down to from 750 DEG C, nitrogen should be filled in the process；
Step 5: keeping the temperature at 705 DEG C, 650 DEG C are then cooled to, stops being passed through nitrogen after cooling, starts simultaneously at discharge gas
Body；
Step 6: taking out spring washer when in-furnace temperature is lower than 550 DEG C, being air-cooled to room temperature.
2. annealing regulation method according to claim 1, wherein the methanol flow is 20-60cc/min.
3. annealing regulation method according to claim 1, wherein the time for continuing to be filled with methanol is 10-60min.
4. annealing regulation method according to claim 1, wherein the heating rate of third step is 6-16 DEG C/min.
5. annealing regulation method according to claim 1, wherein the soaking time of third step is 50-150min.
6. annealing regulation method according to claim 1, wherein the rate of temperature fall of the 4th step be 0.1-0.9 DEG C/
min。
7. annealing regulation method according to claim 1, wherein the nitrogen flow of the 4th step is 60-120cc/
min。
8. annealing regulation method according to claim 1, wherein the soaking time of the 5th step is 180-300min.
9. annealing regulation method according to claim 1, wherein the rate of temperature fall of the 5th step be 0.5-1.5 DEG C/
min。
10. annealing regulation method according to claim 1, wherein the spring washer material is selected from 65Mn spring steel, 70
Spring steel, 60Si2Mn spring steel；It is preferably selected from 65Mn spring steel.
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| CN201811113423.9A CN109371226B (en) | 2018-09-25 | 2018-09-25 | Annealing control method of automatically controlled spring washer |
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| CN102994710A (en) * | 2012-12-28 | 2013-03-27 | 东莞市科力钢铁线材有限公司 | Spheroidizing annealing process of superplasticity fastener wire rod |
| CN103993140A (en) * | 2014-04-19 | 2014-08-20 | 东莞市科力钢铁线材有限公司 | Spheroidizing annealing technology of low-hardness fastener wires |
| CN103993141A (en) * | 2014-04-23 | 2014-08-20 | 东莞市科力钢铁线材有限公司 | Spheroidizing annealing process for high-toughness medium carbon steel wires |
| CN104878166A (en) * | 2015-05-26 | 2015-09-02 | 邢台钢铁有限责任公司 | Spheroidized annealing process for shortening annealing cycle of hot rolled wire rods |
-
2018
- 2018-09-25 CN CN201811113423.9A patent/CN109371226B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101363077A (en) * | 2008-09-10 | 2009-02-11 | 江苏太平洋精密锻造有限公司 | Isothermal spheroidizing technology of cold precision forging gear blank |
| CN102994710A (en) * | 2012-12-28 | 2013-03-27 | 东莞市科力钢铁线材有限公司 | Spheroidizing annealing process of superplasticity fastener wire rod |
| CN103993140A (en) * | 2014-04-19 | 2014-08-20 | 东莞市科力钢铁线材有限公司 | Spheroidizing annealing technology of low-hardness fastener wires |
| CN103993141A (en) * | 2014-04-23 | 2014-08-20 | 东莞市科力钢铁线材有限公司 | Spheroidizing annealing process for high-toughness medium carbon steel wires |
| CN104878166A (en) * | 2015-05-26 | 2015-09-02 | 邢台钢铁有限责任公司 | Spheroidized annealing process for shortening annealing cycle of hot rolled wire rods |
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