CN103105065A - Firing end point control method and firing end point control system - Google Patents
Firing end point control method and firing end point control system Download PDFInfo
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- CN103105065A CN103105065A CN2012105790731A CN201210579073A CN103105065A CN 103105065 A CN103105065 A CN 103105065A CN 2012105790731 A CN2012105790731 A CN 2012105790731A CN 201210579073 A CN201210579073 A CN 201210579073A CN 103105065 A CN103105065 A CN 103105065A
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Abstract
The invention discloses a firing end point control method and a firing end point control system. The method comprises the steps: detecting the position and the temperature of the firing end point; judging the relationship between the position of the firing end point and a preset range of the position of the firing end point, and judging the relationship between the temperature of the firing end point and a preset range of the temperature of the firing end point; if the temperature of the firing end point is normal, gradually regulating the frequency of a main exhaust fan to the maximum; if the temperature of the firing end point is too low, reducing the thickness of a material layer; if the temperature of the firing end point is too high, increasing the thickness of a material layer; if the position of the firing end point is in advance, improving the speed of a trolley; if the position of the firing end point is postponed, decelerating the speed of the trolley. The method can enable the position and the temperature of the firing end point to meet the production requirements, avoid the problems of waste of fuel due to the fact that the temperature of the firing end point is too high and return mine at high proportion due to the fact that the temperature of the firing end point is too low, so that the aim of production maximization is achieved.
Description
Technical field
The application relates to the SINTERING TECHNOLOGY field, particularly relates to a kind of sintering end point control method and system.
Background technology
Sintering system mainly comprises a plurality of equipment such as pallet, mixer, main exhauster, central cooler, its total technological process is shown in Figure 1: various raw materials are in proportioning room 1 proportioning, form mixed material, then enter mixer 2 mixings and pelletizing, by round roller batcher 3 and nine roller material distributing machine 4, its uniformly dispersing is formed the bed of material on pallet 5 again, igniting blower fan 12 and the blower fan 11 of igniting are material igniting beginning sintering process.The sintering deposit that obtains after sintering is completed enters central cooler 9 after single roll crusher 8 fragmentations cooling, finally by delivering to blast furnace or finished product ore storage bin after the whole grain of screening.Wherein, the oxygen that sintering process needs is provided by main exhauster 10, pallet 5 belows are provided with a plurality of vertical bellows 6 side by side, the bellows below is the large flue of horizontal setting (or claiming flue) 7, large flue 7 is connected with main exhauster 10, the negative pressure wind process chassis that main exhauster 10 produces by large flue 7 and bellows 6 is for sintering process provides combustion air.
In sintering process, the position of sintering end point (BTPP) and temperature (BTPT) are key factors, as shown in Figure 2, the position of sintering end point is bellows position corresponding to temperature curve summit that the material sintering process forms, the temperature of sintering end point is temperature of charge corresponding to temperature curve summit that the material sintering process forms, and sintering end point is that the bed of material has been grilled thoroughly but do not formed the point of burning.Present sintering system, usually with the sintering end point location positioning a predefined position, for example: the position of penultimate bellows, when sintering process is controlled, by regulating platform vehicle speed or thickness of feed layer, with the sintering end point Position Control in predefined sintering end point position.
But this control procedure that sets in advance the sintering end point position that sintering end point is adjusted to easily causes the too high or too low for temperature of sintering end point.Fig. 2 shows sintering end point position and temperature relation figure.In Fig. 2, the temperature peak of temperature curve S1, S2 and S3 all appears at No. 22 bellows positions (penultimate bellows), but curve S 1 the temperature of this position nearly 500 the degree, excess Temperature has reflected the waste of fuel; Less than 200 degree, temperature is too low has reflected that material may not grill thoroughly to curve S 3 in the temperature of this position, and this can cause a high proportion of returning mine, i.e. the generation of underproof sintering deposit.
Summary of the invention
In view of this, the embodiment of the present application provides a kind of sintering end point control method and system, temperature and the position of sintering end point all can be controlled at preset range, on the basis of fuel saving, guarantees sintering quality.
To achieve these goals, the technical scheme that provides of the embodiment of the present application is as follows:
A kind of sintering end point control method comprises:
Detect sintering end point position and sintering end point temperature;
Judge the relation of described sintering end point position and predefined sintering end point position range, and, judge the relation of described sintering end point temperature and predefined sintering end point temperature range;
If described sintering end point temperature is normal, progressively the main exhauster frequency adjustment is arrived maximum; If described sintering end point temperature is too low, reduce thickness of feed layer; If described sintering end point excess Temperature increases thickness of feed layer;
If described sintering end point position is leading, improve machine speed; If described sintering end point position is delayed, reduce machine speed.
A kind of sintering end point control system comprises:
Detecting unit is for detection of sintering end point position and sintering end point temperature;
The position judgment unit is for the relation that judges described sintering end point position and predefined sintering end point position range;
The temperature judging unit is for the relation that judges described sintering end point temperature and predefined sintering end point temperature range;
The sintering velocity control module is used for when described sintering end point temperature is normal, progressively the main exhauster frequency adjustment is arrived maximum; When described sintering end point temperature is too low, reduce thickness of feed layer; When described sintering end point excess Temperature, increase thickness of feed layer;
When described sintering end point position is leading, improve machine speed; When described sintering end point position is delayed, reduce machine speed.
by above technical scheme as seen, the method that the embodiment of the present application provides, at first detect sintering end point position and sintering end point temperature, the relation of the sintering end point position range that then judges respectively the sintering end point position and set in advance, the relation of sintering end point temperature and the sintering end point temperature range that sets in advance, according to the judged result of sintering end point position and the judged result of sintering end point temperature, the regulating platform vehicle speed, thickness of feed layer and main exhauster frequency, so that the sintering end point position is dropped in the sintering end point position range that sets in advance, and in the sintering end point temperature range that makes the sintering end point temperature drop on to set in advance.
Compared with prior art, the regulative mode that the method adopts machine speed, thickness of feed layer and main exhauster frequency to combine, can make and grill thoroughly the final position and the sintering end point temperature all meets production requirement, avoid the sintering end point excess Temperature to cause the waste of fuel, and the sintering end point temperature is too low causes a high proportion of problem of returning mine.
Description of drawings
In order to be illustrated more clearly in the embodiment of the present application or technical scheme of the prior art, the below will do to introduce simply to the accompanying drawing of required use in embodiment or description of the Prior Art, apparently, the accompanying drawing that the following describes is only some embodiment that put down in writing in the application, for those of ordinary skills, under the prerequisite of not paying creative work, can also obtain according to these accompanying drawings other accompanying drawing.
Fig. 1 is the structural representation of existing sintering machine;
Fig. 2 is existing sintering end point position and temperature profile;
The schematic flow sheet of the sintering end point control method that Fig. 3 provides for the embodiment of the present application one;
The schematic flow sheet of the sintering end point control method that Fig. 4 provides for the embodiment of the present application two;
The schematic flow sheet of the sintering end point control method that Fig. 5 provides for the embodiment of the present application three;
The schematic flow sheet of the sintering end point control method that Fig. 6 provides for the embodiment of the present application four;
The structural representation of a kind of sintering end point control system that Fig. 7 provides for the embodiment of the present application five;
The structural representation of the detecting unit that Fig. 8 provides for the embodiment of the present application five;
The structural representation of the sintering velocity control module that Fig. 9 provides for the embodiment of the present application five;
The structural representation of the another kind of sintering end point control system that Figure 10 provides for the embodiment of the present application five;
The structural representation of the sintering end point control system that Figure 11 provides for the embodiment of the present application six.
The specific embodiment
In order to make those skilled in the art person understand better technical scheme in the application, below in conjunction with the accompanying drawing in the embodiment of the present application, technical scheme in the embodiment of the present application is clearly and completely described, obviously, described embodiment is only the application's part embodiment, rather than whole embodiment.Based on the embodiment in the application, those of ordinary skills are not making the every other embodiment that obtains under the creative work prerequisite, all should belong to the scope of the application's protection.
Embodiment one:
The schematic flow sheet of the sintering end point control method that Fig. 3 provides for the embodiment of the present application one.
As shown in Figure 3, the method comprises:
S101: detect sintering end point position and sintering end point temperature.
Sintering end point is that the bed of material has been grilled thoroughly but do not formed the point of burning, and the fuel in this moment bed of material all burning is completed, so the temperature of the temperature of sintering end point in whole material sintering process is the highest.
Temperature in the material sintering process can utilize that the temperature of flue gas obtains indirectly in bellows, also can be on chassis the set temperature sensor detect and obtain.If utilize the temperature sensor collecting temperature, for the situation that requires online measuring ability, temperature sensor is arranged on sintering pallet; And for experimentation, temperature sensor can be arranged in the bed of material.
In the present embodiment, employing arranges thermocouple on sintering pallet, the temperature that the thermocouple of different bellows positions is gathered is as the temperature of bellows, then form the temperature curve of all bellows, and then will be positioned at temperature corresponding to temperature curve summit and be defined as the sintering end point temperature, and be the sintering end point position with location positioning corresponding to temperature curve summit.
S102: the relation of judgement sintering end point temperature and predefined sintering end point temperature range.
At present, usually be provided with 18-20 bellows on the sintering machine of 180 square meters, usually be provided with 23-24 bellows on the sintering of 360 square meters.
Predefined sintering end point position is generally on the second-to-last bellows, be that predefined sintering end point position range is in second-to-last bellows length range, 20 bellows are set as example on sintering machine, predefined sintering end point position range is in the 19th bellows length range.
For the material of fixed mixing ratio, sintering end point temperature range corresponding to Different layer of the compost thickness is different, in the present embodiment, can be according to the material of specific proportioning and specific thickness of feed layer be tested, and sintering end point temperature range predefined according to experimental data.
S103: progressively the main exhauster frequency adjustment is arrived maximum.
When judgment result is that the sintering end point temperature is positioned at predefined sintering end point temperature range, be that the sintering end point temperature is normal, the gas permeability that this means the current bed of material meets the demands, can sufficient combustion in order to make the fuel in the bed of material, and can be with the frequency adjustment of main exhauster to maximum.
S104: reduce thickness of feed layer.
When judgment result is that the sintering end point temperature is too low, illustrate that the gas permeability of the bed of material is relatively poor, and then cause the sintering quality of the bed of material relatively poor, easily produce more defective sintering deposit.In order to reduce the amount of defective sintering deposit, need to increase the gas permeability of the bed of material.In the present embodiment, by reducing thickness of feed layer, increase the gas permeability of the bed of material, and then reduce the amount of defective sintering deposit.
S105: increase thickness of feed layer;
When judgment result is that the sintering end point excess Temperature, illustrate that the gas permeability of the bed of material is better, bed of material fuel combustion is abundant, but because gas permeability is higher, make the air quantity by the bed of material increase, the heat that causes air quantity to be taken away is more, waste the heat that bed of material fuel produces, namely wasted fuel.
In order to reduce waste of fuel, can reduce the gas permeability of the bed of material.In the present embodiment, by reducing thickness of feed layer, realize reducing the gas permeability of the bed of material, and then reduce waste of fuel.
When thickness of feed layer is regulated, can carry out according to the time interval that sets in advance respectively, for example: regulated a thickness of feed layer every 1 minute.In addition, the each amount of regulating of thickness of feed layer can be set according to actual conditions, and in the present embodiment, the amount that increases at every turn or increase thickness of feed layer is 10mm.
S106: the relation of judgement sintering end point position and predefined sintering end point position range.
S107: improve machine speed.
When judgment result is that the sintering end point position is leading, illustrate that sintering pallet speed is slower, need to improve machine speed.
S108: reduce machine speed.
When judgment result is that the sintering end point position is leading, illustrate that sintering pallet speed is slower, need to improve machine speed.
When machine speed is regulated, can carry out according to the time interval that sets in advance respectively, for example: regulated a machine speed every 5 minutes.In addition, the each amount of regulating of machine speed can be set according to actual conditions, and in the present embodiment, the amount that increases at every turn or reduce machine speed is 0.04m.
When specifically sintering end point position and sintering end point temperature being regulated, but associative list 1 describes:
Table 1:
| The sintering end point temperature | The sintering end point position | Machine speed | Bed of material bed thickness | The main exhauster frequency |
| Normally | In advance | Improve | Constant | Be adjusted to maximum |
| Normally | Normally | Constant | Constant | Be adjusted to maximum |
| Normally | Delay | Reduce | Constant | Be adjusted to maximum |
| Too high | In advance | Improve | Increase | ? |
| Too high | Normally | Constant | Increase | ? |
| Too high | Delay | Reduce | Increase | ? |
| Too low | In advance | Improve | Reduce | ? |
| Too low | Normally | Constant | Reduce | ? |
| Too low | Delay | Reduce | Reduce | ? |
in the present embodiment, for sintering end point temperature and sintering end point two of positions condition, the preferential sintering end point temperature of regulating, when the sintering end point excess Temperature occurring, when the sintering end point position is delayed simultaneously, if this moment, the amount according to normal setting reduced the burning machine speed, will make the material roasting time to extend, this will certainly further increase the sintering end point temperature, so when the sintering end point excess Temperature occurring, and when the sintering end point position is delayed, can also keep machine speed constant, Deng the sintering end point temperature be tending towards normal after, reduce again machine speed, perhaps, when reducing machine speed, regulate according to the amount less than normal regulating machine speed.
And for sintering end point temperature too low and sintering end point position occurring when leading, if this moment, the amount according to normal setting improved sintering velocity, will make the material roasting time shorten, further reduce the sintering end point temperature, so, when sintering end point temperature too low and sintering end point position occurring when leading, can also keep machine speed constant, Deng the sintering end point temperature be tending towards normal after, improve again machine speed, perhaps, when improving machine speed, regulate according to the amount less than normal regulating machine speed.
Embodiment two:
The schematic flow sheet of the sintering end point control method that Fig. 4 provides for the embodiment of the present application two.
As shown in Figure 4, the method comprises:
S201: the temperature that detects 6 thermocouples on the chassis be horizontally installed on each bellows position.
Each bellows correspondence position is provided with 6 thermocouples on sintering pallet, and 6 thermocouples are evenly arranged along the trolley movement direction, and thermocouple is for detection of the temperature of the bed of material on sintering pallet.
S202: the temperature of 6 each bellows of temperature computation that obtain according to each bellows position.
Can calculate the average of 6 temperature of each bellows position acquisition, with the temperature of this average as these bellows.
In addition,, detected temperatures may occur and too high or too low situation occur due to reasons such as faults itselfs when indivedual thermocouples, if utilize after this fault the temperature of thermocouple calculating each bellows, error appears in the temperature that can cause calculating bellows.
For this reason, in the present embodiment, when calculating the temperature of each bellows, 6 temperature that each bellows position is obtained are removed calculating mean value after maximum temperature, minimum temperature, and the mean value that each bellows is calculated is as the temperature of each bellows.So just can effectively avoid because indivedual thermocouple faults cause calculating the problem that error occurs.
S203: the temperature of all bellows is fitted to position-temperature curve.
After above-mentioned steps calculates the temperature of each bellows, can obtain the corresponding relation between a temperature and bellows positions, utilize this corresponding relation, can simulate a position-temperature curve.
In the present embodiment, can be with the bellows positions abscissa as this position-temperature curve, with the ordinate of box temperature as this position-temperature curve.
S204: determine sintering end point position and sintering end point temperature.
According to the description of above-mentioned steps, after definite position-temperature curve, the corresponding abscissa in the summit of this curve is defined as the sintering end point position, and, the corresponding ordinate in the summit of this curve is defined as the sintering end point temperature.
S205: the relation of judgement sintering end point position and predefined sintering end point position range
S206: progressively the main exhauster frequency adjustment is arrived maximum.
S207: reduce thickness of feed layer.
S208: increase thickness of feed layer.
S209: the relation of judgement sintering end point temperature and predefined sintering end point temperature range.
S210: improve machine speed.
S211: reduce machine speed.
In step S205 ~ S211 and embodiment one, step S102 ~ S108 is corresponding one by one, in detail can referring in above-described embodiment about the description of step S102 ~ S108, do not repeat them here.
Embodiment three:
The schematic flow sheet of the sintering end point control method that Fig. 5 provides for the embodiment of the present application three.
In the above-described embodiments progressively with the main exhauster frequency adjustment before the maximum, as shown in Figure 5, the method can also comprise:
S301: detect the main exhauster frequency.
In above-mentioned steps S1031, step S1032 or step S1033, if current main exhauster frequency has equaled the peak frequency that sets in advance, again the main exhauster frequency is regulated with regard to not needing so.So before the main exhauster frequency is regulated, can at first detect main exhauster frequency under current state.
S302: judge that whether the main exhauster frequency is less than the peak frequency that sets in advance.
After the main exhauster frequency being detected, if the main exhauster frequency less than the peak frequency that sets in advance, is carried out step S206 so, otherwise, need not to regulate the main exhauster frequency, directly process ends.
Due to above-mentioned be progressively that the sintering end point temperature is normal with the main exhauster frequency adjustment to maximum situation corresponding to step, that is to say so, current bed permeability meets the demands, so in order to make the fuel in the bed of material can sufficient combustion, can be with the frequency adjustment of main exhauster to maximum.
Embodiment four:
The schematic flow sheet of the sintering end point control method that Fig. 6 provides for the embodiment of the present application four.
In the above-described embodiments, after increasing or reducing thickness of feed layer, as shown in Figure 6, the method can also comprise:
S401: judge that whether thickness of feed layer is more than or equal to maximum thickness of feed layer.
For sintering pallet, the thickness of feed layer scope that the sintering machine of different model is corresponding is different, take 360 square meter sintering machines as example, the scope of its thickness of feed layer is between 660mm ~ 720mm, after thickness of feed layer exceeds this scope, will affect the normal operation of sintering machine, as: thickness of feed layer is too high, the ignition operation of impact igniting blower fan 12 and the blower fan 11 of igniting.
When regulating thickness of feed layer, need thickness of feed layer and the relation of maximum thickness of feed layer or minimum thickness of feed layer after judgement is regulated, when regulating rear thickness of feed layer more than or equal to maximum thickness of feed layer, carry out step S402.
S402: stop regulating thickness of feed layer, reduce the frequency of main exhauster.
Because the thickness of feed layer after regulating has surpassed the maximum thickness of feed layer limit value that sintering pallet is set, namely can't reduce by increasing thickness of feed layer the gas permeability of the bed of material, in order to control the combustion case of the bed of material, can reduce the frequency of main exhauster, minimizing is by the air quantity of the bed of material, and then the temperature of the reduction bed of material.
S403: judge that whether thickness of feed layer is less than or equal to maximum thickness of feed layer.
When thickness of feed layer is less than or equal to minimum thickness of feed layer after regulating, carry out step S404.
S404: stop regulating thickness of feed layer, increase the frequency of main exhauster.
Because the thickness of feed layer after regulating has reached the minimum thickness of feed layer limit value that sintering pallet is set, namely can't increase by reducing thickness of feed layer the gas permeability of the bed of material, in order to control the combustion case of the bed of material, can increase the frequency of main exhauster, increase is by the air quantity of the bed of material, promote bed of material fuel combustion, improve the temperature of the bed of material.
When the main exhauster frequency is regulated, can carry out according to the predefined time interval respectively, for example: regulated a main exhauster frequency every 10 minutes, and the each amount of regulating of main exhauster frequency, can set according to actual conditions, for example: can regulate 5% at every turn.
| The sintering end point temperature | The sintering end point position | Machine speed | Bed of material bed thickness | The main exhauster frequency |
| Normally | In advance | Improve | Constant | Be adjusted to maximum |
| Normally | Normally | Constant | Constant | Be adjusted to maximum |
| Normally | Delay | Reduce | Constant | Be adjusted to maximum |
| Too high | In advance | Improve | Increase | Reach the upper limit, reduce the main exhauster frequency |
| Too high | Normally | Constant | Increase | Reach the upper limit, reduce the main exhauster frequency |
| Too high | Delay | Reduce | Increase | Reach the upper limit, reduce the main exhauster frequency |
| Too low | In advance | Improve | Reduce | Reach lower limit, increase the main exhauster frequency |
| Too low | Normally | Constant | Reduce | Reach lower limit, increase the main exhauster frequency |
| Too low | Delay | Reduce | Reduce | Reach lower limit, increase the main exhauster frequency |
The method that the present embodiment provides when specific embodiment, can regulate sintering end point with reference to the content of table 2.
Table 2:
Embodiment five:
The structural representation of the sintering end point control system that Fig. 7 provides for the embodiment of the present application five.
As shown in Figure 7, this system comprises: detecting unit 71, position judgment unit 72, temperature judging unit 73 and sintering velocity control module 74.
Detecting unit 71 is for detection of sintering end point position and sintering end point temperature.
Detecting unit 71 utilizes the thermocouple that is arranged on sintering pallet, the temperature that the thermocouple of different bellows positions is gathered is as the temperature of bellows, then form the temperature curve of all bellows, and then will be positioned at temperature corresponding to temperature curve summit and be defined as the sintering end point temperature, and be the sintering end point position with location positioning corresponding to temperature curve summit.
In the present embodiment, each bellows position is horizontally arranged with 6 thermocouples on sintering pallet.
As shown in Figure 8, detecting unit 71 comprises:
Receiving element 711 is for the temperature that receives 6 thermocouples in each bellows;
Sintering velocity control module 74 progressively arrives the main exhauster frequency adjustment maximum when described sintering end point temperature is normal; When described sintering end point temperature is too low, reduce thickness of feed layer; When described sintering end point excess Temperature, increase thickness of feed layer; When described sintering end point position is leading, improve machine speed; When described sintering end point position is delayed, reduce machine speed.
As shown in Figure 9, sintering velocity control module 74 comprises: THICKNESS CONTROL unit 741, speed control unit 742 and frequency control unit 743, wherein,
When thickness of feed layer is regulated, can carry out according to the time interval that sets in advance respectively, for example: regulated a thickness of feed layer every 1 minute.In addition, the each amount of regulating of thickness of feed layer can be set according to actual conditions, and in the present embodiment, the amount that increases at every turn or increase thickness of feed layer is 10mm.
When machine speed is regulated, can carry out according to the time interval that sets in advance respectively, for example: regulated a machine speed every 5 minutes.In addition, the each amount of regulating of machine speed can be set according to actual conditions, and in the present embodiment, the amount that increases at every turn or reduce machine speed is 0.04m.
Details can be referring to the content of table 1 in embodiment one.
In addition, if current main exhauster frequency has equaled the peak frequency that sets in advance, again the main exhauster frequency is regulated with regard to not needing so.So before the main exhauster frequency is regulated, can at first detect main exhauster frequency under current state.
As shown in figure 10, the embodiment of the present application this system of providing can also comprise:
When the frequency of main exhauster during less than the peak frequency that sets in advance, frequency control unit 743 progressively with the main exhauster frequency adjustment to maximum.
When the main exhauster frequency is regulated, can carry out according to the predefined time interval respectively, for example: regulated a main exhauster frequency every 10 minutes, and the each amount of regulating of main exhauster frequency, can set according to actual conditions, for example: can regulate 5% at every turn.
Embodiment six:
The structural representation of the sintering end point control system that Figure 11 provides for the embodiment of the present application six.
For sintering pallet, the thickness of feed layer scope that the sintering machine of different model is corresponding is different, take 360 square meter sintering machines as example, the scope of its thickness of feed layer is between 660mm ~ 720mm, after thickness of feed layer surpasses this scope, will affect the normal operation of sintering machine, as: thickness of feed layer is too high, the ignition operation of impact igniting blower fan 12 and the blower fan 11 of igniting.
As shown in figure 11, this system also comprises on the basis of embodiment four: thickness judging unit 77.
During more than or equal to maximum thickness of feed layer, frequency control unit 743 reduces the frequency of main exhausters when thickness of feed layer; Less than or equal to minimum thickness of feed layer, frequency control unit 743 increases the frequency of main exhauster when thickness of feed layer.
Details can be referring to the content of table 2 in embodiment three.
When the main exhauster frequency is regulated, can carry out according to the predefined time interval respectively, for example: regulated a main exhauster frequency every 10 minutes, and the each amount of regulating of main exhauster frequency, can set according to actual conditions, for example: can regulate 5% at every turn.
The above is only the application's preferred embodiment, makes those skilled in the art can understand or realize the application.Multiple modification to these embodiment will be apparent to one skilled in the art, and General Principle as defined herein can be in the situation that do not break away from the application's spirit or scope, realization in other embodiments.Therefore, the application will can not be restricted to these embodiment shown in this article, but will meet the widest scope consistent with principle disclosed herein and features of novelty.
Claims (10)
1. a sintering end point control method, is characterized in that, comprising:
Detect sintering end point position and sintering end point temperature;
Judge the relation of described sintering end point position and predefined sintering end point position range, and, judge the relation of described sintering end point temperature and predefined sintering end point temperature range;
If described sintering end point temperature is normal, progressively the main exhauster frequency adjustment is arrived maximum; If described sintering end point temperature is too low, reduce thickness of feed layer; If described sintering end point excess Temperature increases thickness of feed layer;
If described sintering end point position is leading, improve machine speed; If described sintering end point position is delayed, reduce machine speed.
2. method according to claim 1, is characterized in that, also comprises:
Detection is horizontally installed on the temperature of 6 thermocouples on the chassis of each bellows position;
6 temperature that each bellows position is obtained are removed calculating mean value after maximum temperature, minimum temperature, and the mean value that each bellows is calculated is as the temperature of each bellows;
The temperature of all bellows is fitted to position-temperature curve;
The location positioning that the summit of described position-temperature curve is corresponding is the sintering end point position, and the temperature that the summit of described position-temperature curve is corresponding is defined as the sintering end point temperature.
3. method according to claim 2, is characterized in that, described progressively with the main exhauster frequency adjustment before the maximum, also comprise:
Detect described main exhauster frequency;
Judge that whether described main exhauster frequency is less than the peak frequency that sets in advance;
If so, with described main exhauster frequency adjustment to the peak frequency that sets in advance.
4. method according to claim 3, is characterized in that, also comprises:
The relation of described thickness of feed layer and maximum thickness of feed layer and minimum thickness of feed layer after judgement is regulated;
If after regulating, described thickness of feed layer more than or equal to described maximum thickness of feed layer, stops regulating thickness of feed layer, reduce the frequency of main exhauster;
If after regulating, described thickness of feed layer less than or equal to described minimum thickness of feed layer, stops regulating thickness of feed layer, increase the frequency of main exhauster.
5. method according to claim 4, is characterized in that, according to the time interval adjustment described machine speed, thickness of feed layer and the main exhauster frequency that set in advance.
6. a sintering end point control system, is characterized in that, comprising:
Detecting unit is for detection of sintering end point position and sintering end point temperature;
The position judgment unit is for the relation that judges described sintering end point position and predefined sintering end point position range;
The temperature judging unit is for the relation that judges described sintering end point temperature and predefined sintering end point temperature range;
The sintering velocity control module is used for when described sintering end point temperature is normal, progressively the main exhauster frequency adjustment is arrived maximum; When described sintering end point temperature is too low, reduce thickness of feed layer; When described sintering end point excess Temperature, increase thickness of feed layer;
When described sintering end point position is leading, improve machine speed; When described sintering end point position is delayed, reduce machine speed.
7. system according to claim 6, is characterized in that, on sintering pallet, each bellows position is horizontally arranged with 6 thermocouples, and described detecting unit comprises:
Receiving element is for the temperature that receives 6 thermocouples in each bellows;
The temperature computation unit is used for 6 temperature that each bellows obtains are removed calculating mean value after maximum temperature, minimum temperature, and the mean value that each bellows is calculated is as the temperature of each bellows;
The curve unit is used for the temperature of all bellows is fitted to position-temperature curve;
Position determination unit, being used for the location positioning that the summit of described position-temperature curve is corresponding is the sintering end point position;
Temperature determining unit is used for the temperature that the summit of described position-temperature curve is corresponding and is defined as the sintering end point temperature.
8. system according to claim 7, other are, described sintering velocity control module comprises: THICKNESS CONTROL unit, speed control unit and frequency control unit, wherein,
Described THICKNESS CONTROL unit is used for reducing thickness of feed layer when described sintering end point temperature is too low; When described sintering end point excess Temperature, increase thickness of feed layer;
Described speed control unit is used for when described sintering end point position is leading, the raising machine speed; When described sintering end point position is delayed, reduce machine speed;
Described frequency control unit is used for when described sintering end point temperature is normal, progressively the main exhauster frequency adjustment is arrived maximum.
9. system according to claim 8, is characterized in that, also comprises:
Frequency detecting unit is for detection of described main exhauster frequency;
The frequency judging unit for the size of the peak frequency that judges described main exhauster frequency and set in advance, and sends to described frequency control unit with judged result;
When described main exhauster frequency during less than the peak frequency that sets in advance, described frequency control unit progressively with the main exhauster frequency adjustment to maximum.
10. system according to claim 9, is characterized in that, also comprises:
The thickness judging unit, be connected with described THICKNESS CONTROL unit, be used for judging thickness of feed layer after described THICKNESS CONTROL unit is regulated and the relation of maximum thickness of feed layer and minimum thickness of feed layer, and judged result is sent to described THICKNESS CONTROL unit and frequency control unit;
Described THICKNESS CONTROL unit is used for after regulating described thickness of feed layer more than or equal to described maximum thickness of feed layer, or adjusting stops regulating thickness of feed layer when described thickness of feed layer is less than or equal to described minimum thickness of feed layer afterwards;
Described frequency control unit is used for reducing the frequency of main exhauster when regulating rear described thickness of feed layer more than or equal to described maximum thickness of feed layer; When described thickness of feed layer is less than or equal to described minimum thickness of feed layer after regulating, increase the frequency of main exhauster.
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