CN1286992C - Process for producing oil tempered wire - Google Patents
Process for producing oil tempered wire Download PDFInfo
- Publication number
- CN1286992C CN1286992C CN03801114.XA CN03801114A CN1286992C CN 1286992 C CN1286992 C CN 1286992C CN 03801114 A CN03801114 A CN 03801114A CN 1286992 C CN1286992 C CN 1286992C
- Authority
- CN
- China
- Prior art keywords
- wire
- wire rod
- weight
- oil
- tempering
- 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.)
- Expired - Fee Related
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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
- C21D9/52—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor for wires; for strips ; for rods of unlimited length
- C21D9/525—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor for wires; for strips ; for rods of unlimited length for wire, for rods
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/18—Ferrous alloys, e.g. steel alloys containing chromium
-
- 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
- C21D1/58—Oils
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- Heat Treatment Of Strip Materials And Filament Materials (AREA)
Abstract
The method comprises the steps of: applying an isothermal transformation heat treatment to a wire material having a nonmetallic inclusion controlled; applying a lubrication film after acid washing; carrying out scalping after which softening a work hardened layer produced on a surface layer at the time of scalping by annealing and carrying out wire drawing, and then carrying out an oil temper treatment.
Description
Technical field
The present invention relates to be used for the manufacture method of the helical spring oil temper wires such as torsion spring of used valve spring such as car combustion engine, clutch coupling.
Background technology
With regard to whisker is used the manufacture method of oil temper wire, known have: the wire rod that uses nonmetal inclusion to be controlled, carry out isothermal transformation thermal treatment, lubricated coating after the pickling, after peeling off processing, carry out isothermal transformation thermal treatment once again, lubricate coating after the pickling, after Wire Drawing, carry out the manufacture method of the oil temper wire of oil tempering processing.At this moment, the isothermal transformation thermal treatment of wire rod has been improved the processibility of wire rod owing to peel off before handling, so usually with its omission.
The existing manufacture method of handling the heat treated oil temper wire of back enforcement isothermal transformation of peeling off has following shortcoming:
(a) the invar silk is heated to more than the isothermal transformation point, so there is the possibility that decarburization takes place.
(b) because isothermal transformation thermal treatment need become burst mobile a processing, so be easy to the generation damage in mobile the processing and in the operation.
(c) in isothermal transformation thermal treatment, need remove the flakey oxidation coating that produces in the thermal treatment, and, need lubricated coating to handle after the pickling in order to implement Wire Drawing.
(d) since after the pickling lubricated coating coarse cause the attachment state of oil tempering after the wire drawing again flakey oxidation coating in handling inhomogeneous, be unfavorable for helical spring forming process (coiling).
Summary of the invention
Problem of the present invention is exactly the manufacture method that a kind of oil temper wire is provided in view of the above problems, has both simplified the operation of peeling off after the processing, can improve the quality again, reduce cost.
Another problem of the present invention provides the not decarburization of a kind of wire rod, carry out Wire Drawing and oil tempering is handled the rear surface not damaged, do not had inhomogeneous scale, whisker is easy to the oil temper wire of moulding manufacture method.
In order to solve above-mentioned problem, the manufacture method of oil temper wire of the present invention is characterised in that, after the wire rod that nonmetal inclusion is controlled peels off processing, under the nitrogen oxygen mixed gas environment of 500～650 ℃ of temperature, after utilizing annealing process softening, the top layer produces when handling work hardening layer carries out wire drawing to peeling off, then wire rod is implemented the oil tempering processing of Q-tempering, form the flakey oxidation coating of thickness 1～5 μ m on the top layer, the composition of wherein said steel wire is: the carbon of 0.57～0.65 weight %, 1.43 the silicon of～1.53 weight %, 0.69 the manganese of～0.71 weight %, 0.67 the chromium of～1.48 weight %, 0～0.47 weight % molybdenum, 0～0.19 weight % vanadium, 0.006～0.014 weight % phosphorus, 0.004～0.008 weight % sulphur, all the other are iron.
The effect of invention
The inventor finds: be used for the manufacture method of helical spring oil temper wire, the steel wire that nonmetal inclusion is controlled is handled laggard capable anneal peeling off, and is of value to Wire Drawing after this.That is, whisker according to the present invention is to utilize the annealing softening wire rod to peel off the work hardening layer that results from the wire rod top layer in the processing with the manufacture method of oil temper wire, eliminates its harm, carries out the method that oil tempering is handled after wire drawing.
Consider the state that melts admittedly that is formed cementite when oil tempering is handled after wire-drawing workability and the Wire Drawing by the austenitizing heating, the annealing temperature of wire rod is located in 500～650 ℃ the temperature range.Environmental gas during annealing is preferably nitrogen environment gas or nitrogen oxygen hybird environment gas, is preferably the gas that amount of oxygen is controlled to some extent especially.The flakey oxidation coating that produces during wire annealing can be controlled in extremely thin and under the uniform state.Therefore, can save in the prior art to the lubricated coating of implementing after the pickling that Wire Drawing carries out and handle.
Before the wire rod Wire Drawing, also can utilize the shot blasting processing that descales such as (shot blast) to the flakey oxidation coating that produces because of annealing.Carry out homogenize by flakey oxidation coating and handle, and then make flakey oxidation coating after oil tempering is handled (thickness) again evenly, the oilness in the time of just guaranteeing whisker machine-shaping (coiling) the wire rod that produces because of annealing.
Description of drawings
Fig. 1 cuts photo for the surface of the wire rod that the manufacture method by oil temper wire of the present invention makes.
The serve as reasons molten admittedly state photo of the wire rod that the manufacture method of this oil temper wire makes of Fig. 2.
The serve as reasons simplified diagram of the flakey oxidation coating metewand under the wire rod reeling condition that the manufacture method of this oil temper wire makes of Fig. 3.
Fig. 4 is the photo of the decarburization state of reference wire rod.
Embodiment
The manufacture method of oil temper wire of the present invention is characterized in that, utilizes the annealing softening wire rod to peel off to handle the work hardening layer that results from the top layer in the back, eliminates its harm, after wire drawing, carries out oil tempering and handles.
[embodiment 1]
With regard to oil temper wire, preparation comprises that 0.57% carbon is (following as there not being specified otherwise, " % " all represents weight %), 1.45% silicon, 0.69% manganese, 0.014% phosphorus, 0.004% sulphur, 0.67% chromium, wire rod A～G and reference wire rod H that all the other are controlled for the inclusion of the steel alloy of iron, various wire rods are carried out isothermal transformation thermal treatment, after pickling, implement lubricated overlay film, carry out surfacial spalling and handle.The treatment capacity of peeling off of wire rod is: diameter is 0.3mm (thickness 0.15mm).Carrying out wire annealing in batches with nitrogen oxygen hybird environment gas then handles.
The annealing temperature variation range of wire rod is confirmed the wire-drawing workability of wire rod A～G and reference wire rod H under each annealing temperature between 450～700 ℃.Flakey oxidation package membrane stage behind the wire annealing all is as thin as a wafer and very even.And annealed wire rod A～G is not identified the generation decarburization, but as shown in Figure 4, reference wire rod H has the situation of decarburization.
Then, the good wire rod of Wire Drawing being carried out oil tempering handles.Confirm the molten admittedly state (with reference to Fig. 2) of the cementite when oil tempering is handled.Because it is short that oil tempering is handled heat-up time, so form when spherical when cementite, heating makes cementite molten abundant inadequately admittedly, so can not get proper intensity.
Wire rod A～G and the reference wire rod H controlled to inclusion carry out isothermal transformation thermal treatment, implement lubricated coating after the pickling, and the annealing temperature after carrying out the surfacial spalling processing and the relation of wire-drawing workability are as follows.
Wire rod A: when annealing temperature is 450 ℃, produce fracture of wire in the Wire Drawing, do not have practicality.
Wire rod B: when annealing temperature is 480 ℃, can implement the Wire Drawing of shrinking percentage more than 80%, but as shown in Figure 1, produce trickle and the rectangular crackle shape of bobbin slight crack on the wire surface.
Wire rod C～F: when annealing temperature is 500～650 ℃, be not identified trickle and the generation rectangular crackle shape of bobbin slight crack, and do not observe the balling of cementite, and make cementite fully solid molten, obtain proper intensity by the heating of the austenitizing after the Wire Drawing.The outward appearance that is not identified the flakey oxidation coating after oil tempering is handled has uneven situation.
Wire rod G: anneal under 700 ℃ temperature, the balling of cementite continues to carry out, and the solid of cementite of balling melted, and can not get proper intensity.
Reference wire rod H: the outward appearance of confirming the flakey oxidation coating after oil tempering is handled is inhomogeneous.
More than the evaluation situation of each wire rod A～G and reference wire rod H as shown in table 1.Annealing temperature is applicable to wire rod C～F for 500～650 ℃.
Table 1 evaluation result
| Condition | Thermal treatment after peeling off | Wire drawing | Oil tempering | Eddy current test | Comprehensive evaluation | |||||
| Mode | Temperature (℃) | Environmental gas | Have or not decarburization | Flake thickness (μ m) | Processibility | Admittedly molten state | Scale is inhomogeneous | The damage number | ||
| Wire rod A | Annealing | 450 | Nitrogen | ○ | 0～1 | × | - | - | - | × |
| Wire rod B | 480 | ○ | 0～2 | △ | - | - | - | × | ||
| Wire rod C | 500 | ○ | 1～3 | ○ | ○ | ○ | 0 | ○ | ||
| Wire rod D | 550 | ○ | 1～3 | ○ | ○ | ○ | 0 | ○ | ||
| Wire rod E | 600 | ○ | 1～3 | ○ | ○ | ○ | 0 | ○ | ||
| Wire rod F | 650 | ○ | 2～5 | ○ | ○ | ○ | 0 | ○ | ||
| Wire rod G | 700 | ○ | 3～8 | ○ | △ | - | - | × | ||
| Reference wire rod H | Isothermal transformation | Reduction | △ | 2～15 | ○ | ○ | × | 7 | × | |
Oil tempering under off line, utilizes eddy current testing method that total length is carried out defect detecting test after handling.The every coil (diameter 6mm, long 1500m) of taking turns of wire rod C～F that carries out the batch anneal has not a particle of damage, otherwise, find that every circle has the damage of 7 places among the reference wire rod H (peel off and handle) after the wire rod after the isothermal transformation thermal treatment.A～D of Fig. 3 represents the determinating reference to each wire rod cycloid scale sheet oxidation coating unevenness.
Table 2 assessment item
| Assessment item | Metewand |
| Decarburization | There is not partial decarburization |
| Processibility | 1. 2. shrinking percentage is processed the rear surface and is not had defectives such as damage more than 80% |
| Admittedly molten state | The evenly solid molten dispersion of cementite |
| Inhomogeneous scale | Flakey oxidation coating unevenness determinating reference A, B are qualified |
[embodiment 2]
To composition and embodiment 1 different comprise 0.65% carbon, 1.53% silicon, 0.69% manganese, 0.007% phosphorus, 0.008% sulphur, 0.68% chromium, all the other carry out isothermal transformation thermal treatment for the wire rod that the inclusion of the steel alloy of iron is controlled, implement lubricated coating after the pickling, the surface is carried out the processing of peeling off of diameter 0.3mm (thickness 0.15mm).
Under nitrogen oxygen hybird environment gas, wire rod is carried out the batch anneal then.Its annealing temperature is made as 500 ℃.After wire rod carried out anneal, carry out wire drawing and handle, carry out oil tempering then and handle to suitable silk footpath.At this moment, abnormal conditions such as undercapacity in handling of unusual, oil tempering that Wire Drawing causes, uneven flakey oxidation coating do not take place.
[embodiment 3]
For oil temper wire as the high-fatigue strength material, be to use and comprise 0.64% carbon, 1.43% silicon, 0.71% manganese, 0.006% phosphorus, 0.005% sulphur, 1.48% chromium, 0.47% molybdenum, 0.19% vanadium, the wire rod that all the other are controlled for the inclusion of the steel alloy of iron, after pickling, implement lubricated coating, the surface is carried out the processing of peeling off of diameter 0.3mm (thickness 0.15mm).Under 600 ℃ nitrogen oxygen hybird environment gas, wire rod is carried out the batch anneal then.Then, after wire rod is carried out Wire Drawing, carry out oil tempering and handle.
Above-mentioned high-fatigue strength material does not take place because of abnormal conditions such as undercapacity in handling of unusual, oil tempering that Wire Drawing causes, uneven scales yet.
In the various embodiments described above, peeling off result same when wire rod being carried out isothermal transformation thermal treatment and can obtain with the isothermal transformation of omission described in prior art thermal treatment before handling.
Industrial applicability
The present invention as mentioned above, after peeling off processing, after utilizing annealing process softening, the work hardening layer that the top layer produces to this moment carries out wire drawing, then wire rod being implemented oil-temper processes, by wire rod being peeled off the laggard row annealing in process of processing, even do not carry out isothermal transformation heat treatment after peeling off processing, also can obtain the Wire Drawing performance more than 80%, there is not the factor of bringing out decarburization and damage, thereby can accesses high-quality oil temper wire.
The even oxidation coating (flakey oxidation coating) that produces because of annealing makes the oxidation coating (flakey oxidation coating) of oil temper wire even, makes helical spring be easy to moulding, and namely coiling and molding is easy to realize.
Claims (1)
1. the manufacture method of an oil temper wire, the composition of wherein said steel wire is: the carbon of 0.57～0.65 weight %, 1.43 the silicon of～1.53 weight %, 0.69 the manganese of～0.71 weight %, 0.67 the chromium of～1.48 weight %, 0～0.47 weight % molybdenum, 0～0.19 weight % vanadium, 0.006～0.014 weight % phosphorus, 0.004～0.008 weight % sulphur, all the other are iron, it is characterized in that, after the wire rod that nonmetal inclusion is controlled peels off processing, under the nitrogen oxygen mixed gas environment of 500～650 ℃ of temperature, after utilizing annealing process softening, the top layer produces when handling work hardening layer carries out wire drawing to peeling off, then wire rod is implemented the oil tempering processing of Q-tempering, formed the flakey oxidation coating of thickness 1～5 μ m on the top layer.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP211954/2002 | 2002-07-22 | ||
| JP2002211954A JP3555892B2 (en) | 2002-07-22 | 2002-07-22 | Method of manufacturing oil-tempered wire |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1556866A CN1556866A (en) | 2004-12-22 |
| CN1286992C true CN1286992C (en) | 2006-11-29 |
Family
ID=30767794
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN03801114.XA Expired - Fee Related CN1286992C (en) | 2002-07-22 | 2003-05-26 | Process for producing oil tempered wire |
Country Status (6)
| Country | Link |
|---|---|
| US (1) | US20040244883A1 (en) |
| EP (1) | EP1524323B1 (en) |
| JP (1) | JP3555892B2 (en) |
| CN (1) | CN1286992C (en) |
| HK (1) | HK1069414A1 (en) |
| WO (1) | WO2004009856A1 (en) |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105296717A (en) * | 2015-11-04 | 2016-02-03 | 无锡翱天钢丝制品有限公司 | Cyclic utilization process for waste oil-hardened high-carbon spring steel wire |
| CN106011432A (en) * | 2016-07-05 | 2016-10-12 | 苏州市虎丘区浒墅关弹簧厂 | Heat treatment technology for spring used for bearing |
| CN110129528A (en) * | 2019-05-15 | 2019-08-16 | 安徽环新集团有限公司 | Wire annealing pre-treatment production line and method for piston ring |
| DE112020006562T5 (en) | 2020-06-15 | 2023-01-12 | Sumitomo Electric Industries, Ltd. | spring steel wire |
| US11807923B2 (en) | 2020-06-17 | 2023-11-07 | Sumitomo Electric Industries, Ltd. | Spring steel wire |
| CN114277231B (en) * | 2021-11-19 | 2023-12-05 | 铃木加普腾钢丝（苏州）有限公司 | Online dehydrogenation process for electric tail gate oil quenched steel wire |
Family Cites Families (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US1815505A (en) * | 1929-11-15 | 1931-07-21 | Oscar J Wilbor | Bright annealing of metals |
| GB1400872A (en) * | 1972-11-15 | 1975-07-16 | Bridon Ltd | Production of low alloy steel wire |
| JPS59153842A (en) * | 1983-02-19 | 1984-09-01 | Kobe Steel Ltd | Production of steel wire rod having excellent scale detachability after annealing |
| JPS6372832A (en) | 1986-09-16 | 1988-04-02 | Shinko Kosen Kogyo Kk | Production of oil tempered wire having oxide film of good formability |
| US5491036A (en) * | 1992-03-27 | 1996-02-13 | The Louis Berkman Company | Coated strip |
| JP3003831B2 (en) | 1993-11-18 | 2000-01-31 | 住友電気工業株式会社 | Oil-tempered wire and method for producing the same |
| JP3011435U (en) * | 1994-11-21 | 1995-05-30 | 鈴木金属工業株式会社 | Self-sealing metal wire insertion nozzle |
| US6224686B1 (en) * | 1998-02-27 | 2001-05-01 | Chuo Hatsujo Kabushiki Kaisha | High-strength valve spring and it's manufacturing method |
| JP3595901B2 (en) * | 1998-10-01 | 2004-12-02 | 鈴木金属工業株式会社 | High strength steel wire for spring and manufacturing method thereof |
| KR100368530B1 (en) | 1998-12-21 | 2003-01-24 | 가부시키가이샤 고베 세이코쇼 | Spring Steel Superior in Workability |
-
2002
- 2002-07-22 JP JP2002211954A patent/JP3555892B2/en not_active Expired - Fee Related
-
2003
- 2003-05-26 WO PCT/JP2003/006546 patent/WO2004009856A1/en active Application Filing
- 2003-05-26 EP EP03730632.1A patent/EP1524323B1/en not_active Expired - Fee Related
- 2003-05-26 CN CN03801114.XA patent/CN1286992C/en not_active Expired - Fee Related
-
2004
- 2004-03-18 US US10/803,379 patent/US20040244883A1/en not_active Abandoned
-
2005
- 2005-03-08 HK HK05101983A patent/HK1069414A1/en not_active IP Right Cessation
Also Published As
| Publication number | Publication date |
|---|---|
| WO2004009856A1 (en) | 2004-01-29 |
| JP2004052048A (en) | 2004-02-19 |
| EP1524323B1 (en) | 2013-06-26 |
| EP1524323A4 (en) | 2006-02-01 |
| US20040244883A1 (en) | 2004-12-09 |
| EP1524323A1 (en) | 2005-04-20 |
| CN1556866A (en) | 2004-12-22 |
| HK1069414A1 (en) | 2005-05-20 |
| JP3555892B2 (en) | 2004-08-18 |
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