CN103128887A - Tire vulcanization technology and tire prepared by tire vulcanization technology - Google Patents
Tire vulcanization technology and tire prepared by tire vulcanization technology Download PDFInfo
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- CN103128887A CN103128887A CN2011103886114A CN201110388611A CN103128887A CN 103128887 A CN103128887 A CN 103128887A CN 2011103886114 A CN2011103886114 A CN 2011103886114A CN 201110388611 A CN201110388611 A CN 201110388611A CN 103128887 A CN103128887 A CN 103128887A
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Abstract
The invention relates to tire vulcanization technology and a tire prepared by the tire vulcanization technology. The tire vulcanization technology utilizes thermocouple vulcanization temperature measurement assist to measure a foaming point. The method comprises the following steps: (1) utilizing a vulkameter to measure the needed time Ts<2> of sizing materials of each part of the tire from the beginning of a test until a vulcanization curve rises by 2 dN.m (N); (2) utilizing a vulcanization thermodetector to measure a temperature of sunk cords of the tire under standard vulcanization technology to get an actual vulcanizing time t<a> corresponding to the Ts<2>, and comparing. The longest part of the t<a> is regarded as a foaming part, and the corresponding t<a> is regarded as the foaming point.
Description
Technical field
The present invention relates to a kind of tyre vulcanizing, relate in particular to a kind of auxiliary blow point method of thermocouple sulfuration thermometric of utilizing and reduce the tyre vulcanizing in tyre vulcanization cycle, the invention still further relates to the tire that uses this tyre vulcanizing to prepare.
Background technology
Due to the reproducing characteristic in the heat transfer process of sizing material, the tire that thickness is larger need vulcanize the long period, in the hope of its sizing material, forms the suitable degree of cross linking.But heating makes outside the occupancy raising of plant equipment for a long time, also easily cause the surface of goods that abnormal over cure phenomenon often occurs.On the other hand, by the same token, after tire breaks away from vulcanizer (in press after), its surface rapidly cooling and therefore sulfided state there is no marked change, yet more inner is cooling very slow, and the degree of cross linking also can continue to improve, to such an extent as to quite high.
So, in a kind of good tyre vulcanizing, should use short as far as possible curing cycle, it can make the use of plant equipment can make the state of cure (vulcanization) of tire each several part reach better balance by " the outer after cure of machine " again more economically.This just requires those skilled in the art can determine the tyre vulcanization cycle more accurately, makes curing cycle short as far as possible, and the outer after cure of the machine that takes full advantage of as much as possible, makes tire reach necessary state of cure (vulcanization).
At present tyre company determines that the method in tyre vulcanization cycle has two kinds of thermocouple method and blow point methods.Thermocouple method, based on the Arrhenius reaction equation, is used embedded thermocouple, according to the Temperature Measurement of Tire during Vulcanization result, is converted into sulfuration effect, and then extrapolates equivalent vulcanization time.This method of utilizing the A Leiniwusi formula to calculate is calculated and determines according to relevant chemical principle and mathematical method, main this thermal parameter of activation energy of using, with activation energy, the time is carried out to integration, can calculate equivalent vulcanization time under arbitrary temp, but owing to being the pure mathematics simulation method, do not consider critical initial temperature and the sulfide stress parameter of chemical reaction in formula, can not fully truly reflect the virtual condition of sizing material.Current most factory is used with the A Leiniwusi computing method of formula and formulates conditions of vulcanization, and the different understanding according to sulfurization technology, adopt the time point of EQT T70-T90 to open mould mostly, mostly has the phenomenon of over cure.
The blow point method is rubber when mould is opened in release sometime, and the crosslinked powerful degree of its sizing material is enough to overcome the tension force of sizing material foaming, and this can be avoided the limit time value of foaming to be known as " sulfur foam point " just.Because curing cycle is too short, will cause inside tires to form bubble, and and then tire can't be used, the simple determination method of therefore just having arisen at the historic moment and can avoid this negative effect and reach the lowest term of positive negative effect balance.Japan Patent JP 9251020 thinks that the formation of bubble and eyelet in rubber is relevant with the state of cure (vulcanization) that makes when the mould pressure release to reach, and by state of cure (vulcanization), characterizes foamed time.But because state of cure (vulcanization) is only relevant to the sizing material characteristic of every kind of sizing material, can't characterize the relation between sizing material cross-link intensity and sizing material foaming tension force, therefore this characterizing method science not, often can not accurately characterize blow point, and the definite of blow point do not have rule to follow, and all needs great many of experiments to be verified at every turn.
Therefore, so far, not yet find a kind of simple to operationly in open source literature, can accurately determine the tyre vulcanizing in the shortest required tyre vulcanization cycle.
Summary of the invention
The invention discloses a kind of method of utilizing the auxiliary Accurate Determining blow point of thermocouple sulfuration thermometric, the method step is as follows:
1) utilize vulcameter to measure each position sizing material of tire required time T s of 2 dN.m (N) that rises from the on-test to the curing curve
2;
2) utilize the sulfuration temperature measurer to be sunken cord thermometric to obtain Ts to the tire under standard cure technique
2corresponding actual cure time t
a, compare, wherein t
athe longest position is considered to foamed position, the t that it is corresponding
abe considered to blow point.
The inventive method is by the required time T s of 2 dN.m (N) that rises from the on-test to the curing curve
2characterize judgement blow point and foamed position, this has overcome the defect of using state of cure (vulcanization) judgement blow point in the prior art, and reappearance is strong, simple to operate, wherein Ts
2accurately characterized the relation between sizing material cross-link intensity and sizing material foaming tension force, at this sizing material, crosslinked powerful degree is enough to overcome the equalization of strain of sizing material foaming, is the important parameter of judgement blow point.
The present invention further discloses a kind of auxiliary blow point method of thermocouple sulfuration thermometric of utilizing and reduce the tyre vulcanizing in tyre vulcanization cycle, this processing step is as follows:
1) utilize the method for above-mentioned thermocouple sulfuration thermometric auxiliary measuring blow point to measure blow point;
2) formulate new curing cycle according to blow point, the tire to this under new sulfuration process sunken cord thermometric and analyze its each position rubber vulcanization degree and whether meet 120% condition;
3) tire of producing under standard cure technique and new sulfuration process is carried out to Performance Ratio, finally accomplishes under the prerequisite that does not reduce tire quality, with the shortest curing cycle, reach the optimum cure degree of whole tire,
Wherein said tire is semi-steel radial tire, all-steel load-bearing radial tire, all-steel giant-scale engineering radial.
This technique is simple to operation, can accurately determine the tyre vulcanizing in the shortest required tyre vulcanization cycle, uses separately the shortcoming of thermocouple method or blow point method before having solved,
Tyre vulcanizing of the present invention can obviously reduce the tyre vulcanization cycle, has the utilization rate of equipment and installations of significantly improving, and saves the energy, the characteristics that reduce production costs.
Tyre vulcanizing of the present invention has significant economic benefit, for example full steel wire heavy load radial tire calculates by 5,000,000/annual capacity, it improves approximately 44.1 ten thousand/year of production capacities, 70,560 ten thousand yuan of new output values, 1,411 ten thousand yuan of the new profits, but approximately 4,560,000 yuan of year steam saving expenses specifically are calculated as follows:
1) utilization rate of equipment and installations improves calculating:
Can shorten cure time: 3-5 minute/cycle according to the method. platform (the following 12.00R20 of pressing shortens 4 minutes and calculates)
5000000/year these specifications approximately need vulcanizer: 78/1,000,000 * 5=390 platform
390 per cycles of vulcanizer can shorten the time: 4 * 390=1560 minute/cycle
5000000/year these specifications can be saved vulcanizer quantity: the 1560/53=29.4 platform
Improve production capacity: 29.4 * 1.5 ten thousand/platform. year=44.1 ten thousand
New output value: 44.1 ten thousand * 0.16 ten thousand yuan/bar=70,560 ten thousand yuan
Ten thousand yuan of the new profit: 70560 * 2%=1411
2) calculating of overheated saturated vapor:
Per kilogram saturated vapor price is pressed: 0.2 yuan/kilogram
Every vulcanizer consumes quantity of steam: 130 kilograms/2
Consumption quantity of steam per minute: 2.28 kg/minute
Per cycle steam saving consumption: 2.28 * 4=9.12 kilogram/cycle
But per cycle steam saving is worth: 9.12 * 0.2=1.824 unit/cycle
Every year, but steam saving was worth: ten thousand yuan/year of 5,000,000/2 * 1.824=456
The invention also discloses a kind of tire that uses above-mentioned tyre vulcanizing to prepare, wherein said tire is semi-steel radial tire, all-steel load-bearing radial tire, all-steel giant-scale engineering radial.The tire tread physical property of using this technique to prepare and wearability all obviously improve.
The accompanying drawing explanation
The sunken cord thermometric figure of 12.00R20-YS08 specification standards tire in the steamer vulcanizer that accompanying drawing 1 is 57min for the tyre vulcanization cycle, in figure, 1#-20# is the thermocouple position of sunkening cord.
Accompanying drawing 2, accompanying drawing 3, accompanying drawing 4 are respectively the tyre vulcanization cycle and are respectively the tire section figure of the 12.00R20-YS08 specification tire of 34min, 37min and 40min.
The sunken cord thermometric figure of 12.00R20-YS08 specification tire in the steamer vulcanizer that accompanying drawing 5 is 53min for the tyre vulcanization cycle, in figure, 1#-12# is the thermocouple position of sunkening cord.
The specific embodiment
Embodiment:
1) vulcanization characteristics of each parts sizing material of tire
The mensuration of vulcanization characteristics: according to GB/T 9869-1997, adopt the U.S. MDR2000 of ALPHA company type vulcameter, measuring temperature is 151 ℃, and minute is 1 hour, measure respectively the vulcanization characteristics of each position sizing material of 12.00R20-YS08 specification tire, result is as shown in table 1:
The vulcanization characteristics of each position sizing material of table 1:12.00R20-YS08 specification tire
| The sizing material title | TS2 | T20 | T30 | T40 | T50 | T60 | T70 | T90 |
| Belt compound | 3:46 | 4:08 | 4:27 | 4:45 | 5:04 | 5:27 | 5:58 | 8:11 |
| Steel wire infantees glue | 3:55 | 4:48 | 5:28 | 6:10 | 6:53 | 7:42 | 8:46 | 12:51 |
| Film glue | 3:18 | 3:42 | 3:59 | 4:16 | 4:37 | 5:01 | 5:36 | 7:48 |
| 0 oBelt compound | 3:12 | 3:36 | 3:56 | 4:16 | 4:40 | 5:12 | 5:56 | 8:36 |
| Tread rubber | 5:40 | 5:40 | 6:08 | 6:32 | 6:58 | 7:27 | 7:58 | 9:59 |
| Sidewall rubber | 4:43 | 4:21 | 4:45 | 5:09 | 5:36 | 6:11 | 6:53 | 10:04 |
| Inner liner glue | 8:42 | 7:46 | 8:42 | 9:36 | 10:51 | 12:47 | 14:38 | 19:16 |
| Upper triangle rubber | 5:53 | 5:47 | 6:13 | 6:33 | 6:56 | 7:22 | 7:49 | 9:23 |
| Shoulder pad glue | 4:23 | 4:28 | 4:44 | 4:58 | 5:10 | 5:25 | 5:41 | 6:49 |
| Lower triangle rubber | 2:44 | 3:05 | 3:24 | 3:44 | 4:04 | 4:27 | 5:00 | 7:23 |
2) the sulfuration thermometric of standard tire
The total cure time of Huanghai Sea rubber 12.00R20-YS08 specification tire steaming pan type vulcanizer is 57min, and concrete vulcanization process condition is in Table 2.
Table 2 steaming pan type vulcanizer conditions of vulcanization
| Classification | Pressure | Temperature |
| Capsule steam | 8.0±0.5bar | |
| Capsule hot water | 26±1bar | 170±3℃ |
| Vaporium steam | 3.9±0.3bar | 151±2℃ |
| The vaporium steam-condensation | ≧145℃ |
| Operating procedure | Start (min) | Finish (min) | Time (min) |
| Capsule fills steam | 0 | 5 | 5 |
| Capsule fills water one time | 5 | 6 | 1 |
| Capsule fills recirculated |
6 | 53.5 | 47.5 |
| Vaporium fills |
6 | 50 | 44 |
| In capsule, superheated water is disposed to 5bar | 53.5 | 55 | 1.5 |
| In capsule, superheated water continues discharge | 55 | 56 | 1 |
| Capsule vacuumizes | 56 | 57 | 1 |
| Vulcanizer is opened | 57 |
Thermocouple is imbedded respectively to 2# belt end points/shoulder pad Jiao Chu (1#-3# position in accompanying drawing 1) in the tire building process, pattern block center line/tread rubber place (4# position in accompanying drawing 1), 0
obelt end points/tread rubber place (5#-7# position in accompanying drawing 1), tyre cavity center/inner liner place (8# position in accompanying drawing 1), shoulder hat wing combination/tread rubber place (9#-11# position in accompanying drawing 1), rim of the mouth anti-package end points/carcass Jiao Chu (12#-13# position in accompanying drawing 1), carcass anti-package end points/carcass Jiao Chu (14#-15# position in accompanying drawing 1), sidewall rubber place, side plate center (16# position in accompanying drawing 1), the upper triangle place (17# position in accompanying drawing 1) of 5mm/ on carcass anti-package end points, lower triangle root/lower triangle place (18#-19# position in accompanying drawing 1), 3# belt center line/tread rubber position (20# position in accompanying drawing 1), then the TC-USB sulfuration temperature measurer that uses rubber studying and designing institute, Beijing to manufacture is vulcanized thermometric, pass through thermometric, obtain the Ts of each position sizing material
2corresponding actual cure time, as shown in table 3:
The Ts of each position sizing material of table 3:12.00R20-YS08 specification tire
2corresponding actual cure time
| ? | Belt compound | Steel wire infantees glue | Film glue | 0 oBelt compound | Tread rubber | Sidewall rubber | Inner liner glue | Upper triangle rubber | Shoulder pad glue | Lower triangle rubber |
| Ts 2Corresponding actual cure time/min | 27.50 | 34.33 | 32.47 | 34.50 | 37.02 | 26.33 | 26.67 | 34.89 | 34.88 | 31.28 |
As shown above, in each position sizing material of this specification tire, the Ts of tread rubber
2corresponding actual cure time is the longest and be 37min, illustrates that blow point may appear at the tyre surface position at 37min,
3) checking of blow point
According to 34min, 37min and tri-time vulcanized tyres of 40min, cutting section, tire section as shown in Figure 2, wherein when cure time is 37min, 5-6 bubble appears in tire, can think that the blow point of this tire is 37min, this blow point appears at the place apart from circumferential line 75-80mm, and tread thickness is the 1/3-1/2 place from the bottom up, 0 ° of belt midpoint top; When cure time is 34min, numerous air-bubble appears in tire section, is spongy; The tire section that is 40min at cure time is not found bubble, and this has further verified that the present invention judges blow point and occurs that the method at blow point position is correct.
4) to shortening the checking tire thermometric of curing cycle
According to the above results, blow point is 37min, now the tyre vulcanization cycle is shortened to 53min by original 57min, and it is vulcanized to thermometric, the thermometric figure that sunkens cord is adjusted according to the above-mentioned temperature-measuring results to the standard tire, the weak part of stress test tire, sunken cord figure as shown in Figure 3 after adjustment, temperature-measuring results is as shown in table 4:
Table 4: the temperature-measuring results of 12.00R20-YS08 specification tire in the steamer vulcanizer that the tyre vulcanization cycle is 53min reaches the comparison with 57min standard tire state of cure (vulcanization)
Actual test result shows that the different parts states of cure (vulcanization) of the rear 12.00R20-YS08 specification tire of curing cycle shortening all reach or surpass 120% under existing process conditions, and the over cure degree has been compared obvious reduction with former sulfuration process.
5) new sulfuration process tyre performance checking:
Respectively vulcanize 3 12.00R20-YS08 specification tires according to the tyre vulcanization cycle of 57min and 53min in the steamer vulcanizer respectively, it has been carried out at a high speed and the endurance quality contrast experiment, wherein durability experiment is according to GB/T4501-2008, experimental period is 47h, check air pressure is 830kPa, gauge load is 3750kg, check speed is 55km/h, high speed experimental basis load-carrying experimental program, check air pressure is 830kPa, gauge load is 3750kg, check speed > 120km/h, experimental result shows, the high speed of the tire of these two kinds of sulfuration process productions and endurance quality have all reached the national standard requirement, and performance is suitable.
The physical property that is respectively to the 12.00R20-YS08 specification tire tread glue of 57min and 53min the tyre vulcanization cycle dissects test, and result is as table 5:
Table 5: the tyre vulcanization cycle is respectively the comparison of the 12.00R20-YS08 specification tire tread glue physical property of 57min and 53min
| Curing cycle | 100% stretching strength/MPa | 300% stretching strength/MPa | Hot strength/MPa | Elongation at break/% | Abrasion/cm 3 | Hardness |
| 57min | 3.83 | 15.73 | 22.30 | 421 | 0.4014 | 67 |
| 53min | 3.92 | 15.87 | 22.48 | 425 | 0.3511 | 68 |
By table 5, can be seen, after shortening curing cycle, the conventional physical property of tire tread glue has surpassed the tire according to the curing cycle sulfuration of former sulfuration process comprehensively, and also obviously reduction of abrasion, and combination property improves.
Claims (5)
1. a tyre vulcanizing and tire prepared therefrom, is characterized in that, in sulfuration process, utilizes thermocouple sulfuration thermometric auxiliary law to be measured blow point, and the method step is:
1) utilize vulcameter to measure each position sizing material of tire required time T s of 2 dN.m (N) that rises from the on-test to the curing curve
2;
2) utilize the sulfuration temperature measurer to be sunken cord thermometric to obtain Ts to the tire under standard cure technique
2corresponding actual cure time t
a, compare, wherein t
athe longest position is considered to foamed position, the t that it is corresponding
abe considered to blow point.
2. a kind of tyre vulcanizing according to claim 1 and tire prepared therefrom, is characterized in that, the sulfuration process step is:
1) utilize the method for the thermocouple sulfuration thermometric auxiliary measuring blow point of claim 1 to measure blow point;
2) formulate new curing cycle according to blow point, the tire to this under new sulfuration process sunken cord thermometric and analyze its each position rubber vulcanization degree and whether meet 120% condition;
3) tire of producing under standard cure technique and new sulfuration process is carried out to Performance Ratio, finally accomplish under the prerequisite that does not reduce tire quality, with the shortest curing cycle, reach the optimum cure degree of whole tire.
3. a kind of tyre vulcanizing according to claim 1 and tire prepared therefrom, is characterized in that, wherein said tire is semi-steel radial tire.
4. a kind of tyre vulcanizing according to claim 1 and tire prepared therefrom, is characterized in that, wherein said tire is all-steel load-bearing radial tire.
5. a kind of tyre vulcanizing according to claim 1 and tire prepared therefrom, is characterized in that, wherein said tire is the all-steel giant-scale engineering radial.
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| CN2011103886114A CN103128887A (en) | 2011-11-30 | 2011-11-30 | Tire vulcanization technology and tire prepared by tire vulcanization technology |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103624908A (en) * | 2013-12-03 | 2014-03-12 | 山东金宇轮胎有限公司 | Method for determining tire vulcanization time |
| CN110364228A (en) * | 2019-06-24 | 2019-10-22 | 安徽佳通乘用子午线轮胎有限公司 | A kind of tyre stock formula vulcanizing system design method and system |
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| JP2005212150A (en) * | 2004-01-27 | 2005-08-11 | Yokohama Rubber Co Ltd:The | Method for estimating degree of equivalent vulcanization, computer program for estimating degree of equivalent vulcanization and rubber product manufacturing method |
| JP2009085791A (en) * | 2007-09-28 | 2009-04-23 | Nippon Applied Technology Inc | Critical vulcanization degree testing device for foaming in rubber sample and its method for determining vulcanization limit |
| WO2011058480A1 (en) * | 2009-11-11 | 2011-05-19 | Pirelli Tyre S.P.A. | A method of controlling flaw formation in a sealing layer of a tyre during a process for producing self- sealing tyres for vehicle wheels and process for producing self-sealing tyres for vehicle wheels |
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2011
- 2011-11-30 CN CN2011103886114A patent/CN103128887A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2005212150A (en) * | 2004-01-27 | 2005-08-11 | Yokohama Rubber Co Ltd:The | Method for estimating degree of equivalent vulcanization, computer program for estimating degree of equivalent vulcanization and rubber product manufacturing method |
| JP2009085791A (en) * | 2007-09-28 | 2009-04-23 | Nippon Applied Technology Inc | Critical vulcanization degree testing device for foaming in rubber sample and its method for determining vulcanization limit |
| WO2011058480A1 (en) * | 2009-11-11 | 2011-05-19 | Pirelli Tyre S.P.A. | A method of controlling flaw formation in a sealing layer of a tyre during a process for producing self- sealing tyres for vehicle wheels and process for producing self-sealing tyres for vehicle wheels |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103624908A (en) * | 2013-12-03 | 2014-03-12 | 山东金宇轮胎有限公司 | Method for determining tire vulcanization time |
| CN103624908B (en) * | 2013-12-03 | 2016-04-13 | 山东金宇轮胎有限公司 | A kind of method determining tire vulcanization time |
| CN110364228A (en) * | 2019-06-24 | 2019-10-22 | 安徽佳通乘用子午线轮胎有限公司 | A kind of tyre stock formula vulcanizing system design method and system |
| CN110364228B (en) * | 2019-06-24 | 2023-10-31 | 安徽佳通乘用子午线轮胎有限公司 | Tire sizing material formula vulcanization system design method and system |
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Application publication date: 20130605 |