CN108118135A - Prevent the method being deformed when spring quenches - Google Patents
Prevent the method being deformed when spring quenches Download PDFInfo
- Publication number
- CN108118135A CN108118135A CN201711376628.1A CN201711376628A CN108118135A CN 108118135 A CN108118135 A CN 108118135A CN 201711376628 A CN201711376628 A CN 201711376628A CN 108118135 A CN108118135 A CN 108118135A
- Authority
- CN
- China
- Prior art keywords
- spring
- deformed
- quenching
- quenches
- prevent
- 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
- 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
-
- 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
Abstract
The invention discloses it is a kind of prevent that spring from quenching when the method that is deformed, including：Casing is installed additional in spring bores, the spring equipped with casing is then put into glowing furnace, quenches charging temperature≤880 DEG C；870 ± 10 DEG C of hardening heat, when heat preservation 0.5 1.5 is small, oil quenching after coming out of the stove.The present invention solves technical barrier yielding after spring quenches.
Description
Technical field
The present invention relates to a kind of heat treatment technics of spring, and specifically, being related to one kind prevents from being deformed when spring from quenching
Method.
Background technology
The use of spring is be unable to do without in engineering goods, spring quenching, tempering are to carry out process of thermal treatment to spring part,
It, will to the utilization of spring part in engineering goods since the spring part after quenching, being tempered has excellent comprehensive mechanical property
Ask extremely stringent, therefore quenching, tempering are a kind of best modes that spring part is heat-treated in engineering goods.
Spring quenching at present is to quench in a free state, since spring steel 60Si2CrVAT is new material, and part
Structure is special, and using easily deforming after existing quenching technical, production qualification rate is very low, using general quenching clamping side
Formula is often extremely difficult to set quota, causes spring quenching distortion first-time qualification rate relatively low, so that affecting the part
Normal use causes the consumption such as waste product and other people power, material, the energy.
The content of the invention
Technical problem solved by the invention is to provide a kind of method for preventing from being deformed when spring from quenching, and solves bullet
Yielding technical barrier after the quenching of spring, substantially increases the first-time qualification rate of part and the quality of product.
Technical solution is as follows：
A kind of method for preventing from being deformed when spring from quenching in spring quenching technical, installs casing additional, so in spring bores
The spring equipped with casing is put into glowing furnace afterwards, quenches charging temperature≤880 DEG C；870 ± 10 DEG C of hardening heat keeps the temperature 0.5-
1.5 it is small when；Oil cooling is quenched after coming out of the stove, oil temperature is 50-90 DEG C, 20-40 points of cooling.
Further：When soaking time is 1 small in quenching process.
Further：Oil temperature is 60 DEG C, cools down 30 points.
Further：Further include tempering step, tempering charging temperature≤510 DEG C of spring, 500 DEG C ± 10 DEG C of temperature,
When soaking time is 1.5-2.5 small；Water cooling after spring is come out of the stove cools down 5 minutes.
Further：When soaking time is 2 small.
Compared with prior art, the technology of the present invention effect includes：
1st, the present invention is tackled key problems by technology, has innovated spring quenching technical；Spring bores are installed additional before quenching and are covered
Pipe, is then quenched, changes the installation way of quenching and spring quenching technical, significantly reduced since spring is in free shape
The tendentiousness of deformation is caused under state, technical barrier yielding after spring quenches is solved, substantially increases the once conjunction of part
The quality of lattice rate and product, first-time qualification rate rise to more than 95% by 50%.
2nd, application of the invention mainly improves the presentation quality after part heat treatment and inherent tissue morphology, significantly
Reduce it is unqualified caused by part deformation after quenching, tempering caused by loss due to spoiled work.
Actual saving expense=energy conservation+scraps saving+labour saving
Energy conservation：Multipurpose furnace rated power is 200kw, when small per stove specified heating time uniform 3, the kilowatt hour electricity charge
0.51 yuan, power cost saving=80 × 50% × 200 × 3 × 0.51 during 2010-2015 × 5=61200 members=6.12 ten thousand yuan.
Scrap saving：
After the technology, the annual spring is calculated according to average 80 furnace gauges, is normally heat-treated 3200 yuan/stove, scrap cost
7000 yuan/stove, 200 yuan/furnace gauge of cost of labor is calculated.2010-2015 saves scraping expense=80 × 7000 × 50% × 5=altogether
1400000 yuan=1,400,000 yuan.
Labour saving：Ten thousand yuan of 80 × 200 × 50% × 5=40000=4.0.
During 2010-2015, ten thousand yuan of expense=6.12+140+4.0=150.12 is saved altogether.
Description of the drawings
Fig. 1 is the structure diagram for the spring that casing is added in the present invention；
Fig. 2 is the quenching technical graph of spring in the present invention；
Fig. 3 is the tempering process graph of spring in the present invention.
Specific embodiment
It elaborates below with reference to example embodiment to technical solution of the present invention.However, example embodiment can
Implement in a variety of forms, and be not understood as limited to embodiment set forth herein；On the contrary, it theses embodiments are provided so that
The design of example embodiment more comprehensively and completely, and is comprehensively communicated to those skilled in the art by the present invention.
As shown in Figure 1, it is the structure diagram for the spring 1 that casing 2 is added in the present invention；As shown in Fig. 2, it is the present invention
The quenching technical graph of middle spring 1；As shown in figure 3, it is the tempering process graph of spring 1 in the present invention.
Prevent the method being deformed when spring quenches, including：
Step 1：Endoporus before quenching in spring 1 installs casing 2 additional, and the spring 1 equipped with casing 2 then is put into glowing furnace,
Quench charging temperature≤880 DEG C；
Spring 1 quenches the preceding deformation installed casing 2 additional in endoporus, reduce when spring 1 quenches, and improves the quenching of spring 1
First-time qualification rate.
Step 2：870 ± 10 DEG C of hardening heat, soaking time are 0.5-1.5 (when being 1 small in this preferred embodiment) hours,
Oil cooling is quenched after coming out of the stove；50-90 DEG C of oil temperature (preferably 60 DEG C), 20-40 points of cooling (preferably 30 points)；
Step 3：The tempering of spring 1；
Charging temperature≤510 DEG C, 500 DEG C ± 10 DEG C of temperature are tempered, heat preservation 1.5-2.5 (is 2 in this preferred embodiment
Hour).
Step 4：Water cooling after spring 1 is come out of the stove cools down 5 minutes.
In this preferred embodiment, the parameter of heattreatment of spring process is as shown in table 1.
1 heattreatment of spring process of table
By being compared with the spring 1 before heat treatment, reduced parameter is as shown in table 2.
As table 2 is heat-treated the hardness and deflection of front and rear spring 1
The material of spring 1 is 60Si2CrVAT spring steel, and the endoporus of spring 1 is by installing 2,870 ± 10 DEG C of quenchings of casing additional
Keep the temperature 1h, after heat treatment the Rockwell hardness (HRC) of spring 1 be 42-48, straightness≤0.5mm.Improve the resistance to deformation of spring 1
Ability, heat resistance is too low in hot state in 1 heating process of spring causes to deform, and part is by the qualified deflection of detection 100%
In acceptability limit.
Term used herein is explanation and term exemplary, and not restrictive.Since the present invention can be with a variety of
Form specific implementation without departing from the spiritual or substantive of invention, it should therefore be appreciated that above-described embodiment be not limited to it is any foregoing
Details, and should widely being explained in the spirit and scope that appended claims are limited, thus fall into claim or its etc.
Whole variations and remodeling in the range of effect all should be appended claims and covered.
Claims (5)
- A kind of 1. method for preventing from being deformed when spring from quenching, it is characterised in that：In spring quenching technical, in spring bores plus Then spring equipped with casing is put into glowing furnace by tubing, quench charging temperature≤880 DEG C；870 ± 10 DEG C of hardening heat, When heat preservation 0.5-1.5 is small；Oil cooling is quenched after coming out of the stove, oil temperature is 50-90 DEG C, 20-40 points of cooling.
- 2. prevent the method being deformed when spring quenches as described in claim 1, it is characterised in that：When being kept the temperature in quenching process Between for 1 it is small when.
- 3. prevent the method being deformed when spring quenches as described in claim 1, it is characterised in that：Oil temperature is 60 DEG C, cooling 30 points.
- 4. prevent the method being deformed when spring quenches as described in claim 1, it is characterised in that：Further include tempering step, Tempering charging temperature≤510 DEG C of spring, 500 DEG C ± 10 DEG C of temperature, when soaking time is 1.5-2.5 small；Spring is come out of the stove Water cooling afterwards cools down 5 minutes.
- 5. prevent the method being deformed when spring quenches as claimed in claim 4, it is characterised in that：When soaking time is 2 small.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711376628.1A CN108118135A (en) | 2017-12-19 | 2017-12-19 | Prevent the method being deformed when spring quenches |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711376628.1A CN108118135A (en) | 2017-12-19 | 2017-12-19 | Prevent the method being deformed when spring quenches |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108118135A true CN108118135A (en) | 2018-06-05 |
Family
ID=62230453
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711376628.1A Pending CN108118135A (en) | 2017-12-19 | 2017-12-19 | Prevent the method being deformed when spring quenches |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108118135A (en) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102626844A (en) * | 2012-03-16 | 2012-08-08 | 杭州兴发弹簧有限公司 | Producing technology of rail shock-insulating spring |
| CN104805257A (en) * | 2015-05-08 | 2015-07-29 | 贵州大学 | Spiral spring quenching heat treatment process adopting water-soluble quenching medium |
| CN105385826A (en) * | 2015-11-30 | 2016-03-09 | 沈阳飞机工业（集团）有限公司 | Method for preventing spring heat treatment distortion |
| CN106399808A (en) * | 2016-06-01 | 2017-02-15 | 四川六合锻造股份有限公司 | Smelting method of novel high-hardness spring steel |
-
2017
- 2017-12-19 CN CN201711376628.1A patent/CN108118135A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102626844A (en) * | 2012-03-16 | 2012-08-08 | 杭州兴发弹簧有限公司 | Producing technology of rail shock-insulating spring |
| CN104805257A (en) * | 2015-05-08 | 2015-07-29 | 贵州大学 | Spiral spring quenching heat treatment process adopting water-soluble quenching medium |
| CN105385826A (en) * | 2015-11-30 | 2016-03-09 | 沈阳飞机工业（集团）有限公司 | Method for preventing spring heat treatment distortion |
| CN106399808A (en) * | 2016-06-01 | 2017-02-15 | 四川六合锻造股份有限公司 | Smelting method of novel high-hardness spring steel |
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| Date | Code | Title | Description |
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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 | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20180605 |