CN105154657A - Production method for carrying out online induction annealing heat treatment on alloy profiled spring steel wire - Google Patents
Production method for carrying out online induction annealing heat treatment on alloy profiled spring steel wire Download PDFInfo
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- CN105154657A CN105154657A CN201510684295.3A CN201510684295A CN105154657A CN 105154657 A CN105154657 A CN 105154657A CN 201510684295 A CN201510684295 A CN 201510684295A CN 105154657 A CN105154657 A CN 105154657A
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Abstract
The invention discloses a production method for carrying out online induction annealing heat treatment on an alloy profiled spring steel wire. The method comprises the steps that a single steel wire is towed by a constant speed towing device to pass through a first straightening device, a hot water washing device and a drying device in sequence to undergo online washing and drying, then is straightened by a second straightening device, then continuously passes through an induction heating device to undergo online induction annealing treatment, quickly enters an NH3 decomposition gas shielding and holding furnace under the condition that the online speed is 10-20m/min to undergo slow cooling treatment, enters a steel pipe with a cooling water jacket in a straight line to undergo quick cooling treatment and is finally taken up. The production method has the beneficial effects that quick induction heating and high-temperature annealing continuous treatment of the single steel wire is adopted and the properties and tissue of the steel wire are stable, thus overcoming the defects of non-uniformity of inside and outside tissues and properties and oversize grains in periodic bundle treatment; and as the high-temperature annealing cooling process is carried out in the atmosphere of a shielding gas, the surface of the treated steel wire is free from oxidation and decarbonization.
Description
Technical field
The present invention relates to a kind of alloy heterotypic spring steel wire online induction annealing treatment production method, this production method can be widely used in alloy heterotypic spring steel wire and other steel grade carries out online induction annealing thermal treatment in wire fabrication industry.
Background technology
The thermal treatment of carrying out annealing of alloy heterotypic spring steel wire is one of softening means of metallic substance, for the alloy heterotypic spring steel wire of wire product, means are softened in existing wire annealing thermal treatment two kinds: a kind of method is that whole bundle steel wire does annealing thermal treatment, namely whole bundle is put into cycle stove, carry out anneal, treating processes is discontinuous, after this kind for the treatment of process disadvantage process, materials microstructure and performance are all uneven, and surface oxidation and decarburization phenomenon are also very serious.Another kind method is steel wire on-line heating in electrically heated tube furnace; then the heat treating method cooled in atmosphere; the shortcoming of this kind for the treatment of process is exactly that steel wire heating is carried out in gas-protection-free situation; easily cause the phenomenon such as surface oxidation, decarburization; steel wire heating speed is comparatively slow, and steel wire crystal grain is easily thick.
Summary of the invention
Object of the present invention provides a kind of alloy heterotypic spring steel wire online induction annealing treatment production method for weak point existing in above-mentioned prior art just.The product non-oxidation of this production method gained and decarburization phenomenon, structure and properties is all excellent.The Design of length of induction heating device and Slow cooling holding furnace ensure that structure and properties effect and the two matching; Reliable and stable heating system and high precision infrared thermometry system, ensure that steel wire heating temperature fluctuates in positive and negative 10 degree.Temperature is more constant, and performance is more stable.
Object of the present invention realizes by following technique measures:
Alloy heterotypic spring steel wire of the present invention online induction annealing treatment production method comprises the steps: individual wire to carry out on-line cleaning, oven dry by the first straightening device, hot cleaner, drying unit successively under the traction of constant speed towing mechanism, and then online induction annealing process is carried out after the second straightening device is aligned, continuously across induction heating device, on-line velocity is under the condition of 10 ~ 20m/min, enters NH fast
3decomposition gas protection holding furnace carries out Slow cooling process, and enters band watercooling jacket steel pipe with single linear fashion, carries out quick cooling process, last take-up; Described steel wire Trace speed is by gage Size and NH
3decomposition gas is protected the length of holding furnace and determines.
Described in the present invention, online induction annealing treatment temp is 720oC--850oC, heating frequency: 17KHz ~ 20KHz; Arrange single Heat-Resisting Stainless Steel Tube in the stove of described NH3 decomposition gas protection holding furnace, length is 16 ~ 18m, the outer auxiliary plug insulating cotton of steel pipe, temperature out < 500 DEG C.
The hot water tank length of hot cleaner described in the present invention is 0.8--1.0m, and hot water temperature is 65-80oC, the greasy dirt that main wash steel wire former process carries over.
The oven dry length of tube 1.5--2.0m of drying unit described in the present invention, dries temperature > 120oC in pipe, the main moisture of drying steel wire former process and carrying over.
Be with watercooling jacket steel pipe length to be 4-5m described in the present invention, the type of cooling is indirect water-cooling, and namely water does not contact with steel wire, and steel wire is penetrated steel pipe, is indirectly cooled by cooling pipe.
Installation infrared line temperature measurer (as far as possible near exit) from top to bottom in the exit 100mm of induction heating device described in the present invention, on-line measurement profile wire temperature, infrared rays surveys instrument temperature-measuring range: 300-1000oC.
First and second straightening device described in the present invention, be made up of one group of vertical straightening roll, one group of flat straightening roll, one group of vertical straightening roll, every single group straightening roll composition is not less than 7 single straightening rolls, is processed with the U-type groove of corresponding size in the middle of vertical straightening roll.Described constant speed towing mechanism is made up of traction wheel, hydraulic press mechanism, motor and speed reducer etc.
When utilizing described induction heating device to carry out online induction annealing process, for the steel wire of different wire diameter, the heating copper tube diameter of induction heating device is distinguished to some extent.
After described annealing, high temperature Slow cooling is all carry out under shielding gas atmosphere.
More specifically: described online induction annealing treatment temp is depending on steel wire chemical composition, intensity of steel wire, and the online induction annealing temperature of general steel wire is 720--850oC.
In described constant speed towing mechanism, traction wheel diameter 1200mm, and with hydraulic press mechanism, for ensureing steel wire constant speed, non-slip on traction wheel, can initiatively line sending.
Profile wire size and annealing temperature are depended in the selection of induction heating device, for profile wire with area Round Steel Wire diameter: 3.0-5.0mm, and heating frequency: 17KHz; Diameter: 5.1-10.0mm, heating frequency: 19KHz; Diameter: 10.1-16.0mm, heating frequency: 20KHz.
Beneficial effect of the present invention is as follows:
Treatment production method of the present invention changes the shortcoming of original whole bundle wire rod treatment process and traditional online electrically heated tube furnace high temperature annealing tinuous production, the quick induction heating high temperature annealing of individual wire is adopted to process continuously, the performance of steel wire and tissue stabilization, and uniformity, overcome inside and outside inequality and the situation such as coarse grains of cycle stove bundle process completely.Due in high temperature annealing process of cooling, be carrying out under shielding gas atmosphere, the Steel Wire Surface non-oxidation after process and decarburization.In addition, due to steel wire rapid heating, steel wire crystal grain is superfine.
Accompanying drawing explanation
Fig. 1 is process flow sheet of the present invention.
Embodiment
The present invention is further described below with reference to embodiment (accompanying drawing):
As shown in Figure 1, alloy heterotypic spring steel wire of the present invention online induction annealing treatment production method comprises the steps: the individual wire 10 from actinobacillus device 1 to carry out on-line cleaning, oven dry by the first straightening device 2, hot cleaner 3, drying unit 4 successively under the traction of constant speed towing mechanism 5, and then online induction annealing process is carried out after the second straightening device 6 is aligned, continuously across induction heating device 7, on-line velocity is under the condition of 10 ~ 20m/min, NH
3decomposition gas protection holding furnace 8 carries out Slow cooling process, and enters band watercooling jacket steel pipe 9 with single linear fashion, carries out quick cooling process, finally carries out take-up by take-up 11; Described steel wire Trace speed is by gage Size and NH
3decomposition gas is protected the length of holding furnace and determines.
Described in the present invention, online induction annealing treatment temp is 720oC--850oC, heating frequency: 17KHz ~ 20KHz; Described NH
3arrange single Heat-Resisting Stainless Steel Tube in the stove of decomposition gas protection holding furnace, length is 16 ~ 18m, the outer auxiliary plug insulating cotton of steel pipe, temperature out < 500 DEG C.
The hot water tank length of hot cleaner described in the present invention is 0.8--1.0m, and hot water temperature is 65-80oC, the greasy dirt that main wash steel wire former process carries over.
The oven dry length of tube 1.5--2.0m of drying unit described in the present invention, dries temperature > 120oC in pipe, the main moisture of drying steel wire former process and carrying over.
Be with watercooling jacket steel pipe length to be 4-5m described in the present invention, the type of cooling is indirect water-cooling, and namely water does not contact with steel wire, and steel wire is penetrated steel pipe, is indirectly cooled by cooling pipe.
Installation infrared line temperature measurer (as far as possible near exit) from top to bottom in the exit 100mm of induction heating device described in the present invention, on-line measurement profile wire temperature, infrared rays surveys instrument temperature-measuring range: 300-1000oC.
First and second straightening device 2,6 described in the present invention, be made up of one group of vertical straightening roll, one group of flat straightening roll, one group of vertical straightening roll, every single group straightening roll composition is not less than 7 single straightening rolls, is processed with the U-type groove of corresponding size in the middle of vertical straightening roll.Described constant speed towing mechanism 5 is made up of traction wheel, hydraulic press mechanism, motor and speed reducer etc.
When utilizing described induction heating device to carry out online induction annealing process, for the steel wire of different wire diameter, the heating copper tube diameter of induction heating device is distinguished to some extent.
After described annealing, high temperature Slow cooling is all carry out under shielding gas atmosphere.
More specifically: described online induction annealing treatment temp is depending on steel wire chemical composition, intensity of steel wire, and the online induction annealing temperature of general steel wire is 720--850oC.
In described constant speed towing mechanism, traction wheel diameter 1200mm, and with hydraulic press mechanism, for ensureing steel wire constant speed, non-slip on traction wheel, can initiatively line sending.
Profile wire size and annealing temperature are depended in the selection of induction heating device, for profile wire with area Round Steel Wire diameter: 3.0-5.0mm, and heating frequency: 17KHz; Diameter: 5.1-10.0mm, heating frequency: 19KHz; Diameter: 10.1-16.0mm, heating frequency: 20KHz.
The specific embodiment of the present invention is as follows:
Embodiment 1:
To 60Si
2mnA spring flat steel silk carries out induction annealing thermal treatment: steel wire 10 is through actinobacillus device 1 unwrapping wire, cabling is through the first straightening device 2, continuous cabling cleans flat wire surface through washing unit 3 under water temperature 75 ° of C conditions, straight line is through drying unit 4 again, flat wire is heated to more than 120 ° of C temperature, then enter constant speed towing mechanism 5 constant speed steel wire is sent, directly through the second straightening device 6, then straight line enters in induction heating device 7 under temperature is the condition of 750-780 ° of C, carries out online induction annealing process again, and straight line enters NH
3decomposition gas protection holding furnace 8, carries out Slow cooling process, NH
3decomposition gas protection insulation furnace outlet place flat wire temperature is not higher than 500 ° of C, then straight line enters band watercooling jacket steel pipe 9, and carry out quick cooling process, exit flat wire temperature, not higher than 300 ° of C, twines take-up finally by take-up 11 layers.
Embodiment 2:
To 4Cr
5moSi (H
13) square steel silk carries out induction annealing thermal treatment: steel wire 10 is through actinobacillus device 1 unwrapping wire, cabling is through the first straightening device 2, continuous cabling cleans Steel Wire Surface through washing unit 3 under water temperature 80 ° of C conditions, straight line is through drying unit 4 again, more than steel wire heating to 120 ° of C temperature, then enter constant speed towing mechanism 5 constant speed steel wire is sent, directly through the second straightening device 6, then straight line enters in induction heating device 7 again, is to carry out induction heating straight line under the condition of 820-850 ° of C to enter NH in temperature
3decomposition gas protection holding furnace 8, carries out Slow cooling process, NH
3decomposition gas protection insulation furnace outlet place flat wire temperature is not higher than 500 ° of C, then straight line enters band watercooling jacket steel pipe 9, and carry out quick cooling process, exit flat wire temperature, not higher than 300 ° of C, twines take-up finally by take-up 11 layers.
Claims (7)
1. an alloy heterotypic spring steel wire online induction annealing treatment production method, it is characterized in that: described method comprises the steps: individual wire to carry out on-line cleaning, oven dry by the first straightening device, hot cleaner, drying unit successively under the traction of constant speed towing mechanism, and then online induction annealing process is carried out after the second straightening device is aligned, continuously across induction heating device, on-line velocity is under the condition of 10 ~ 20m/min, enters NH fast
3decomposition gas protection holding furnace carries out Slow cooling process, and enters band watercooling jacket steel pipe with single linear fashion, carries out quick cooling process, last take-up.
2. method according to claim 1, is characterized in that: described online induction annealing treatment temp is 720oC--850oC, heating frequency: 17KHz ~ 20KHz.
3. method according to claim 1, is characterized in that: described NH
3arrange single Heat-Resisting Stainless Steel Tube in the stove of decomposition gas protection holding furnace, length is 16 ~ 18m, the outer auxiliary plug insulating cotton of steel pipe, temperature out < 500 DEG C.
4. method according to claim 1, is characterized in that: the hot water tank length of hot cleaner is 0.8--1.0m, and hot water temperature is 65-80oC.
5. method according to claim 1, is characterized in that: the oven dry length of tube 1.5--2.0m of described drying unit, dries temperature > 120oC in pipe.
6. method according to claim 1, is characterized in that: described band watercooling jacket steel pipe length is 4-5m, and the type of cooling is indirect water-cooling.
7. method according to claim 1, is characterized in that: installation infrared line temperature measurer from top to bottom in the exit 100mm of described induction heating device, on-line measurement profile wire temperature, and infrared rays surveys instrument temperature-measuring range: 300-1000oC.
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108213269A (en) * | 2017-12-27 | 2018-06-29 | 北京康普锡威科技有限公司 | Powder by atomization titanium and titanium alloy silk material continuous straightening device and method |
| CN111774822A (en) * | 2020-08-13 | 2020-10-16 | 无锡金峰园弹簧制造有限公司 | Machining process of hot-rolling spring mandrel |
| EP3885465A1 (en) | 2020-03-27 | 2021-09-29 | Heraeus Materials Singapore Pte. Ltd. | Method for increasing the straightness of a thin wire |
| GB2599638A (en) * | 2020-09-30 | 2022-04-13 | Hs Products Ltd | Wire treatment method and apparatus |
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| CN101067187A (en) * | 2007-06-04 | 2007-11-07 | 江阴康瑞不锈钢制品有限公司 | Stainless steel wire for spoke use and producing method thereof |
| CN102174671A (en) * | 2011-01-31 | 2011-09-07 | 中国钢研科技集团有限公司 | Thermal treatment production line of high-strength stirrup |
| CN102994725A (en) * | 2012-10-30 | 2013-03-27 | 南通恒新金属工艺科技有限公司 | Complete equipment for lead-free heat treatment of steel wires |
| CN104328442A (en) * | 2014-09-25 | 2015-02-04 | 济南瑞通铁路电务有限责任公司 | Production line and production technology of high-speed railway copper alloy shield cut-through ground wire annealing passivation |
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Patent Citations (4)
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|---|---|---|---|---|
| CN101067187A (en) * | 2007-06-04 | 2007-11-07 | 江阴康瑞不锈钢制品有限公司 | Stainless steel wire for spoke use and producing method thereof |
| CN102174671A (en) * | 2011-01-31 | 2011-09-07 | 中国钢研科技集团有限公司 | Thermal treatment production line of high-strength stirrup |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108213269A (en) * | 2017-12-27 | 2018-06-29 | 北京康普锡威科技有限公司 | Powder by atomization titanium and titanium alloy silk material continuous straightening device and method |
| EP3885465A1 (en) | 2020-03-27 | 2021-09-29 | Heraeus Materials Singapore Pte. Ltd. | Method for increasing the straightness of a thin wire |
| US11884991B2 (en) | 2020-03-27 | 2024-01-30 | Heraeus Materials Singapore Pte., Ltd. | Method for increasing the straightness of a thin wire |
| CN111774822A (en) * | 2020-08-13 | 2020-10-16 | 无锡金峰园弹簧制造有限公司 | Machining process of hot-rolling spring mandrel |
| CN111774822B (en) * | 2020-08-13 | 2024-06-11 | 无锡金峰园弹簧制造有限公司 | Processing technology of hot coil spring mandrel |
| GB2599638A (en) * | 2020-09-30 | 2022-04-13 | Hs Products Ltd | Wire treatment method and apparatus |
| GB2599638B (en) * | 2020-09-30 | 2024-06-05 | Hs Products Ltd | Wire treatment method and apparatus |
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Application publication date: 20151216 |