CN106939372B - A kind of manufacturing method of spring - Google Patents
A kind of manufacturing method of spring Download PDFInfo
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- CN106939372B CN106939372B CN201710078339.7A CN201710078339A CN106939372B CN 106939372 B CN106939372 B CN 106939372B CN 201710078339 A CN201710078339 A CN 201710078339A CN 106939372 B CN106939372 B CN 106939372B
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- spring
- heating
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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
- 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
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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)
- Wire Processing (AREA)
- Springs (AREA)
Abstract
The present invention relates to a kind of manufacturing methods of spring, comprising the following steps: two steps, the first step calculate the number and parameter of spring heating, and second is repeatedly heated and be surface-treated to spring.By means of the present invention, the bearing capacity of spring is obviously improved, and the dimensional stability of spring improves.
Description
Technical field
The invention belongs to spring manufacturing technology fields, are related to a kind of processing method for improving spring capacity.
Background technique
For how to promote the bearing capacity of spring, the method for suppressing is provided in the literature.But the method suppressed be
It carries out under room temperature, the tissue morphology and stress level of spring are all unstable states, with placement or prolonging using the time
Continuous, the size and force value characteristic variations of spring are obvious, are easy failure.
Summary of the invention
The object of the present invention is to provide a kind of manufacturing methods of spring.
The technical scheme is that
The present invention provides a kind of manufacturing methods of spring, comprising the following steps:
The first step, the target free height H0 for determining spring, target doubling-up height Hb；Target free height is to target doubling-up
The deflection Fb of height；By wire around being made as helical spring and be heat-treated, the tempering temperature of heat treatment is T0, heat treatment
After cool down；Calculate heating frequency n, calculation formula are as follows: work as logkWhen (100/T0) is integer, n=logk(100/T0)；Work as logk
When (100/T0) is non-integer, n is greater than logkThe smallest positive integral of (100/T0)；
Second step carries out n times heating, every time when heating, warm temperature Tn=T0*K to above-mentioned helical springn, heat preservation
Time is 2-7 hours；Compressed spring meets formula to technique height Hgn, technique height Hgn when heating every time: Hgn=Hb+Fb*
K(n-1)；Wherein, K is a constant, K < 1；N is the number of heating, n >=1；Helical spring is cooled down after heating every time；
Final step restores bullet at ambient temperature by spring-compressed to final doubling-up height Hb, and after holding 48 hours
Spring is to free state.
Further, in second step, whether Tn is judged before each heating≤190 DEG C, it is that surface then is carried out to spring
Processing.
The beneficial effects of the present invention are:
It was verified that after applying the present invention, the bearing capacity of spring is obviously improved, the dimensional stability of spring is improved.
Detailed description of the invention
Fig. 1 is the schematic illustration of the camber of spring manufactured in the present invention；
Specific embodiment
A specific embodiment of the invention is described in further details below:
Referring to Fig. 1, providing a kind of manufacturing method of spring, comprising the following steps:
The first step, the target free height H0 for determining spring, target doubling-up height Hb；Target free height is to target doubling-up
The deflection Fb of height；By wire around being made as helical spring and be heat-treated, the tempering temperature of heat treatment is T0, heat treatment
After cool down；Calculate heating frequency n, calculation formula are as follows: work as logkWhen (100/T0) is integer, n=logk(100/T0)；Work as logk
When (100/T0) is non-integer, n is greater than logkThe smallest positive integral of (100/T0)；
Second step carries out n times heating, every time when heating, warm temperature Tn=T0*K to above-mentioned helical springn, heat preservation
Time is 2-7 hours；Compressed spring meets formula to technique height Hgn, technique height Hgn when heating every time: Hgn=Hb+Fb*
K(n-1)；Wherein, K is a constant, K < 1；N is the number of heating, n >=1；Helical spring is cooled down after heating every time；
Final step restores bullet at ambient temperature by spring-compressed to final doubling-up height Hb, and after holding 48 hours
Spring is to free state.
Further, in second step, whether Tn is judged before each heating≤190 DEG C, it is that surface then is carried out to spring
Processing.
Embodiment 1:
One H0=150 of preproduction, the compressed spring of Hb=100, it is known that 300 DEG C of the tempering temperature of the selection of material takes K=
0.7, intermediate not adjust, then spring is equal as follows than gradual change ageing strengthening process:
First step coiling compressed spring is simultaneously heat-treated, n=0, technique height Hg0=Hb+Fb*K(n-1)=171, tempering temperature
Spend T0=T0*Kn=300 DEG C, keep the temperature 1h；
The 1st heating load up ageing of second step, n=1, technique height Hg1=Hb+Fb*K(1-1)=150, aging temp T1
=T0*K1=210 DEG C, keep the temperature 2-7h；
(spring should be carried out if necessary to be surface-treated between second step and third step)
The 2nd heating load up ageing of third step, n=2, technique height Hg2=Hb+Fb*K(2-1)=135, aging temp T2
=T0*K2=147 DEG C, keep the temperature 2-7h；
The 4th heating load up ageing of step the 3rd time, n=3, technique height Hg3=Hb+Fb*K(3-1)=124.5, aging temp
T3=T0*K3=103 DEG C, keep the temperature 2-7h.
5th step the 4th heats load up ageing, n=3, technique height Hg4=Hb+Fb*K(4-1)=117, aging temp T3
=T0*K4=72 DEG C, because of T3≤100 DEG C, T3=80 DEG C is selected, keeps the temperature 2-7h.
Final step .Hg=Hb=100, T=room temperature keeps 48h, then unloads.
Claims (2)
1. a kind of manufacturing method of spring, comprising the following steps:
The first step, the target free height H0 for determining spring, target doubling-up height Hb；Target free height is to target doubling-up height
Deflection Fb；By wire around being made as helical spring and be heat-treated, the tempering temperature of heat treatment is T0, cold after heat treatment
But；Calculate heating frequency n, calculation formula are as follows: work as logkWhen (100/T0) is integer, n=logk(100/T0)；Work as logk(100/
T0) be non-integer when, n be greater than logkThe smallest positive integral of (100/T0)；
Second step carries out n times heating, every time when heating, warm temperature Tn=T0*K to above-mentioned helical springn, soaking time is
2-7 hours；Compressed spring meets formula to technique height Hgn, technique height Hgn when heating every time: Hgn=Hb+Fb*K(n-1)；
Wherein, K is a constant, K < 1；N is the number of heating, n >=1；Helical spring is cooled down after heating every time；
Final step restores spring and arrives at ambient temperature by spring-compressed to final doubling-up height Hb, and after holding 48 hours
Free state.
2. a kind of manufacturing method of spring according to claim 1, it is characterised in that: in second step, heating it every time
It is preceding whether judge Tn≤190 DEG C, be to be surface-treated to spring.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710078339.7A CN106939372B (en) | 2017-02-14 | 2017-02-14 | A kind of manufacturing method of spring |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710078339.7A CN106939372B (en) | 2017-02-14 | 2017-02-14 | A kind of manufacturing method of spring |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106939372A CN106939372A (en) | 2017-07-11 |
| CN106939372B true CN106939372B (en) | 2018-12-18 |
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ID=59469485
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710078339.7A Active CN106939372B (en) | 2017-02-14 | 2017-02-14 | A kind of manufacturing method of spring |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106939372B (en) |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101125402A (en) * | 2007-10-10 | 2008-02-20 | 大连弹簧有限公司 | Method for processing heat coiling spring whose spring wire diameter is 90 millimeter |
| CN101435476A (en) * | 2007-11-15 | 2009-05-20 | 上海中国弹簧制造有限公司 | Spring production process flow for increasing load detection times |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP5941439B2 (en) * | 2013-07-09 | 2016-06-29 | 日本発條株式会社 | Coil spring and manufacturing method thereof |
-
2017
- 2017-02-14 CN CN201710078339.7A patent/CN106939372B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101125402A (en) * | 2007-10-10 | 2008-02-20 | 大连弹簧有限公司 | Method for processing heat coiling spring whose spring wire diameter is 90 millimeter |
| CN101435476A (en) * | 2007-11-15 | 2009-05-20 | 上海中国弹簧制造有限公司 | Spring production process flow for increasing load detection times |
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| Publication number | Publication date |
|---|---|
| CN106939372A (en) | 2017-07-11 |
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