CN105219945A - A kind of wireline high-carbon carbon steel wire heat treating method - Google Patents
A kind of wireline high-carbon carbon steel wire heat treating method Download PDFInfo
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- CN105219945A CN105219945A CN201410243126.1A CN201410243126A CN105219945A CN 105219945 A CN105219945 A CN 105219945A CN 201410243126 A CN201410243126 A CN 201410243126A CN 105219945 A CN105219945 A CN 105219945A
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Abstract
The present invention relates to a kind of wireline high-carbon carbon steel wire heat treating method.High-carbon carbon steel wire is heated to 800 ~ 865 DEG C, keeps 30s ~ 1min; Then to put in salt bath after isothermal keeps 5 ~ 20s in the salt bath lower than sorbitizing temperature, then put into after the salt bath of sorbitizing temperature range or lead bath isothermal keep 50s ~ 1.5min and take out cooling.After thermal treatment of the present invention, high-carbon carbon steel wire sorbite organized layer spacing is even and little, intensity is high, plasticity good, anti-fatigue performance is excellent.
Description
Technical field
The present invention relates to wireline technical field of heat treatment, be specifically related to a kind of wireline high-carbon carbon steel wire heat treating method.
Background technology
High-carbon steel wire, after appropriate heat treatment or Cold-draw Hardening, has high intensity and hardness, high elastic limit and safe range of stress (especially the notch fatigue limit), cutting ability still can, but welding property and cold plastic deformation ability.Because carbon content is high, easily crack during shrend, so adopt double quenching (shrend+oil cooling) more, small cross-section part many employings oil quenching.This kind of steel is general after quenching through average tempering or normalizing or use under hard surfacing state.
In existing wireline manufacturing process, first need to manufacture steel wire and then carried out being twisted into stock, finally synthesize wireline.The steel wire of current manufacture wireline is mainly high-carbon carbon steel wire, when producing these high-carbon carbon steel wires existing, enter the isothermal quenching of lead bath groove after resistance furnace or Electricity Contact Heating are mainly adopted to its middle thermal treatment process and complete sorbitizing, these techniques are due to directly at Soxhlet tagma isothermal, make its interlamellar spacing can not be less than 100nm, group's size all between 3 ~ 10mm, the performance potential of sorbite tissue can not be given full play to, thus make the strong plasticity of existing high-carbon carbon steel wire and strain fatigue life not ideal.
CN102719650A discloses a kind of wireline high-carbon carbon steel wire thermal treatment process, diameter is that 2mm ~ 5mm high-carbon carbon steel wire passes through induction heating by this technique, it is 780 DEG C ~ 900 DEG C that the mode of resistance furnace heating or Electricity Contact Heating is heated to temperature, and the steel wire by heating is kept 10 seconds ~ 2 minutes at the temperature of 780 DEG C ~ 900 DEG C, then it is put into fast after in salt bath, in the salt bath lower than sorbitizing temperature, isothermal keeps 1 second ~ 20 seconds, again this steel wire is put into after the salt bath of sorbitizing temperature range or lead bath isothermal keep 20 seconds ~ 1 minute and take out naturally cooling.
Above-mentioned patent relatively other prior aries has had very much progress in performance, but its effect or not ideal enough.
Summary of the invention
The object of the present invention is to provide a kind of wireline high-carbon carbon steel wire heat treating method.After thermal treatment of the present invention, high-carbon carbon steel wire sorbite organized layer spacing is even and little, intensity is high, plasticity good, anti-fatigue performance is excellent.
For reaching this object, the present invention by the following technical solutions:
A kind of wireline high-carbon carbon steel wire heat treating method, is heated to 800 ~ 865 DEG C by high-carbon carbon steel wire, keeps 30s ~ 1min; Then to put in salt bath after isothermal keeps 5 ~ 20s in the salt bath lower than sorbitizing temperature, then put into after the salt bath of sorbitizing temperature range or lead bath isothermal keep 50s ~ 1.5min and take out cooling.
The diameter of described high-carbon carbon steel wire is 2.2 ~ 4mm, such as, can select 2.21 ~ 3.89mm, 2.5 ~ 3.7mm, 2.86 ~ 3.42mm, 2.9 ~ 3.2mm, 3.08mm etc., all can be used for implementing the present invention.。
The diameter of described high-carbon carbon steel wire is 2.5mm.
Described type of heating is induction heating, microwave heating, resistance furnace heating or Electricity Contact Heating.
Described is 300 ~ 480 DEG C lower than sorbitizing temperature, such as, can select 300.02 ~ 479.6 DEG C, 308 ~ 453 DEG C, 320 ~ 435 DEG C, 348.6 ~ 415.2 DEG C, 360 ~ 400 DEG C, 375.6 DEG C etc.
Described sorbitizing temperature range is 500 ~ 600 DEG C, such as, can select 500.03 ~ 598.6 DEG C, 534 ~ 576 DEG C, 550 ~ 570 DEG C, 562.3 DEG C.
The present invention is from the angle of pearlitic transformation motivating force, adopt the cold isothermal method again of serious offense, select more reasonably temperature, time parameter, remarkable refinement sorbite tissue mass size and interlamellar spacing, thus improve the strength plastic of high-carbon carbon steel wire, increase the fatigue lifetime of wireline.The present invention, first by after steel wire heating to austenitizing temperature, puts into salt bath fast and keeps the several seconds to obtain big supercooling degree, then put into lead bath isothermal and complete sorbitizing.Be bigger than the cold sorbite group nucleation rate that can make significantly to increase, the isothermal of more than 500 DEG C makes sorbite group core embryo grow sorbitizing fast, can obtain the sorbite tissue of more than 93%, finally complete the thermal treatment of steel wire.After tested, the sorbite organized layer spacing of the steel wire adopting the inventive method heat treated is even.Due to the group's of significantly reducing size, to improving the plasticity of steel wire and toughness has vital role, reducing layer spacing then can be gained in strength level.
Compared with prior art scheme, the present invention has following beneficial effect:
Compared with prior art, can effectively reduce sorbite group's size and interlamellar spacing, improve the homogeneity of interlamellar spacing, its product has the advantages such as strength plastic is high, anti-fatigue performance is excellent, long service life in the present invention.The present invention is to improving the strong plasticity of steel wire wire rod and having remarkable effect fatigue lifetime.
The present invention is described in more detail below.But following example is only simple and easy example of the present invention, and do not represent or limit the scope of the present invention, protection scope of the present invention is as the criterion with claims.
Embodiment
Technical scheme of the present invention is further illustrated below by embodiment.
For better the present invention being described, be convenient to understand technical scheme of the present invention, typical but non-limiting embodiment of the present invention is as follows:
Embodiment 1
Diameter is that the high-carbon carbon steel wire of 2.2mm is heated to 800 DEG C by resistance furnace type of heating by a kind of wireline high-carbon carbon steel wire heat treating method, keeps 1min; Then to put in salt bath after isothermal keeps 20s in the salt bath of 300 DEG C, then put into after the salt bath of 600 DEG C or lead bath isothermal keep 50s and take out cooling.
Embodiment 2
Diameter is that the high-carbon carbon steel wire of 2.5mm is heated to 865 DEG C by microwave heating by a kind of wireline high-carbon carbon steel wire heat treating method, keeps 30s; Then to put in salt bath after isothermal keeps 5s in the salt bath of 480 DEG C, then put into after the salt bath of 500 DEG C or lead bath isothermal keep 1.5min and take out cooling.
Embodiment 3
Diameter is that the high-carbon carbon steel wire of 4mm is heated to 842 DEG C by Electricity Contact Heating mode by a kind of wireline high-carbon carbon steel wire heat treating method, keeps 40s; Then to put in salt bath after isothermal keeps 10s in the salt bath of 400 DEG C, then put into after the salt bath of 520 DEG C or lead bath isothermal keep 1min and take out cooling.
Comparative example
Using technical scheme disclosed in CN102719650A as comparative example of the present invention.
Its high-carbon carbon steel wire used is the high-carbon carbon steel wire being usually used in making wireline in prior art, during enforcement, be that 2mm ~ 5mm high-carbon carbon steel wire is by traditional induction heating by diameter in prior art, it is 780 DEG C ~ 900 DEG C that the mode of resistance furnace heating or Electricity Contact Heating is heated to temperature, and make at the temperature of 780 DEG C ~ 900 DEG C, to be kept 10 seconds ~ 2 minutes (time that the steel wire that its diameter is large keeps should be greater than the little steel wire of diameter) by the steel wire heated, quick austenitizing can be achieved like this, then the steel wire after this heating is put into fast after in salt bath, in the salt bath of 300 DEG C ~ 480 DEG C of temperature, isothermal keeps 1 second ~ 20 seconds, again this steel wire is put into after the salt bath of 500 DEG C ~ 600 DEG C of temperature ranges or lead bath isothermal keep 20 seconds ~ 1 minute and take out naturally cooling, the thermal treatment process of the sorbitizing to this high-carbon carbon steel wire can be completed like this.
The performance of wireline high-carbon carbon steel wire product embodiment of the present invention 1-3 and comparative example obtained contrasts, and result is as shown in table 1.
The each embodiment results of property of table 1
| Embodiment | Group size/mm | Interlamellar spacing/nm |
| Embodiment 1 | 1 | 8 |
| Embodiment 2 | 0.8 | 6 |
| Embodiment 3 | 0.75 | 9 |
| Comparative example | 1～2 | 10～70 |
Applicant states, the present invention illustrates heat treating method of the present invention by above-described embodiment, but the present invention is not limited to above-mentioned heat treatment step, does not namely mean that the present invention must rely on above-mentioned heat treatment step and could implement.Person of ordinary skill in the field should understand, any improvement in the present invention, to equivalence replacement and the interpolation of ancillary component, the concrete way choice etc. of raw material selected by the present invention, all drops within protection scope of the present invention and open scope.
More than describe the preferred embodiment of the present invention in detail; but the present invention is not limited to the detail in above-mentioned embodiment, within the scope of technical conceive of the present invention; can carry out multiple simple variant to technical scheme of the present invention, these simple variant all belong to protection scope of the present invention.
It should be noted that in addition, each concrete technical characteristic described in above-mentioned embodiment, in reconcilable situation, can be combined by any suitable mode, in order to avoid unnecessary repetition, the present invention illustrates no longer separately to various possible array mode.
In addition, also can carry out arbitrary combination between various different embodiment of the present invention, as long as it is without prejudice to thought of the present invention, it should be considered as content disclosed in this invention equally.
Claims (6)
1. a wireline high-carbon carbon steel wire heat treating method, is characterized in that, high-carbon carbon steel wire is heated to 800 ~ 865 DEG C, keeps 30s ~ 1min; Then to put in salt bath after isothermal keeps 5 ~ 20s in the salt bath lower than sorbitizing temperature, then put into after the salt bath of sorbitizing temperature range or lead bath isothermal keep 50s ~ 1.5min and take out cooling.
2. heat treating method as claimed in claim 1, it is characterized in that, the diameter of described high-carbon carbon steel wire is 2.2 ~ 4mm.
3. heat treating method as claimed in claim 1 or 2, it is characterized in that, the diameter of described high-carbon carbon steel wire is 2.5mm.
4. the heat treating method as described in one of claim 1-3, is characterized in that, described type of heating is induction heating, microwave heating, resistance furnace heating or Electricity Contact Heating.
5. the heat treating method as described in one of claim 1-4, is characterized in that, described is 300 ~ 480 DEG C lower than sorbitizing temperature.
6. the thermal treatment as described in one of claim 1-5, is characterized in that, described sorbitizing temperature range is 500 ~ 600 DEG C.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410243126.1A CN105219945A (en) | 2014-06-03 | 2014-06-03 | A kind of wireline high-carbon carbon steel wire heat treating method |
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| CN201410243126.1A CN105219945A (en) | 2014-06-03 | 2014-06-03 | A kind of wireline high-carbon carbon steel wire heat treating method |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106399647A (en) * | 2016-09-26 | 2017-02-15 | 南京钢铁股份有限公司 | Process for realizing sorbitizing cold rolling of high-strength and high-fatigue spring narrow band steel |
| CN106435099A (en) * | 2016-12-02 | 2017-02-22 | 中钢集团郑州金属制品研究院有限公司 | Steel wire induction heating water bath quenching heat treatment technology |
| CN106636581A (en) * | 2016-11-30 | 2017-05-10 | 青岛特殊钢铁有限公司 | Salt bath treatment method and equipment for wire rod for 1960 MPa and above bridge cable zinc-coated steel wire |
-
2014
- 2014-06-03 CN CN201410243126.1A patent/CN105219945A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106399647A (en) * | 2016-09-26 | 2017-02-15 | 南京钢铁股份有限公司 | Process for realizing sorbitizing cold rolling of high-strength and high-fatigue spring narrow band steel |
| CN106636581A (en) * | 2016-11-30 | 2017-05-10 | 青岛特殊钢铁有限公司 | Salt bath treatment method and equipment for wire rod for 1960 MPa and above bridge cable zinc-coated steel wire |
| CN106435099A (en) * | 2016-12-02 | 2017-02-22 | 中钢集团郑州金属制品研究院有限公司 | Steel wire induction heating water bath quenching heat treatment technology |
| CN106435099B (en) * | 2016-12-02 | 2018-05-25 | 中钢集团郑州金属制品研究院有限公司 | A kind of steel wire induction heating water-bath quenching heat treatment technique |
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