CN104385607A - Polytetrafluoroethylene sintering apparatus and sintering method - Google Patents
Polytetrafluoroethylene sintering apparatus and sintering method Download PDFInfo
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- CN104385607A CN104385607A CN201410500117.6A CN201410500117A CN104385607A CN 104385607 A CN104385607 A CN 104385607A CN 201410500117 A CN201410500117 A CN 201410500117A CN 104385607 A CN104385607 A CN 104385607A
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Abstract
The present invention discloses a polytetrafluoroethylene sintering apparatus and a method for sintering polytetrafluoroethylene by using the apparatus. The polytetrafluoroethylene sintering apparatus comprises a furnace body for placing a polytetrafluoroethylene material and a computer system for controlling the furnace body, wherein a temperature sensor and a heating pipe are arranged in the furnace body, the computer system comprises a storage module, a control module and a display module, the storage module stores a plurality of polytetrafluoroethylene material sintering processes, the temperature in the furnace body is controlled through the control module, the information of the temperature in the furnace body and the ideal temperature in the furnace body are displayed through the display module, the furnace bodies comprise a plurality of the furnace bodies, and the plurality of the furnace bodies can concurrently work. With the polytetrafluoroethylene sintering apparatus, the integrity, the confidentiality and the uniformity of the production process are ensured, and the accurate production report can further be provided.
Description
Technical field
The present invention relates to a kind of sintering equipment and sintering method, be specifically related to a kind of sintering polytetrafluoroethylene device and sintering method.
Background technology
Industry control automation completes as modern enterprise the attention that a self-important indicator of upgrading more and more is subject to each enterprise in recent years, it is to production enterprise manpower, the great function of the saving performance of management cost, suitable application is found to be have found the space saving entreprise cost, but in current sintering polytetrafluoroethylene technical process, industry control is not turned automatically into technology application come in, sintering at present for polytetrafluoroethylene (PTFE) carries out under human intervention, by irregularly having patrolled and examined the sintering of goods, although pre-set temperature curve by up-to-date intelligent temperature control table, but in sintering process, the real-time change of temperature curve cannot record, damage of product which results in once cannot search reason by the record of production, be difficult to the integrality ensureing production technology, confidentiality and uniformity.
For above-mentioned reasons, the present inventor conducts in-depth research existing sintering polytetrafluoroethylene device, to develop the sintering polytetrafluoroethylene device that can solve the problem and to design sintering method with matching.
Summary of the invention
In order to overcome the problems referred to above, present inventor has performed and study with keen determination, design a kind of sintering polytetrafluoroethylene device, this device comprises the body of heater placing polytetrafluoroethylmaterial material and the computer system controlling described body of heater, wherein, temperature sensor and heating tube is provided with in described body of heater, described computer system comprises memory module, control module and display module, wherein, the sintering process of multiple polytetrafluoroethylmaterial material is stored in described memory module, the temperature in body of heater is controlled by described control module, temperature in temperature information in body of heater and desirable body of heater is demonstrated by described display module, its display mode is for show in real time by time dependent two curve maps of temperature, thus the fluctuation clearly indicated in temperature, the quantity of described body of heater is multiple, multiple body of heater can work simultaneously, thus complete the present invention.
Specifically, the object of the present invention is to provide following aspect:
(1) a sintering polytetrafluoroethylene device, is characterized in that, this device comprises body of heater and computer system, and polytetrafluoroethylmaterial material to be sintered is placed in described body of heater, described computer system for controlling the sintering work of described body of heater,
Temperature sensor is provided with in described body of heater,
Described computer system comprises memory module, control module and display module, and wherein, described memory module for storing the sintering process of multiple polytetrafluoroethylmaterial material, and passes out the sintering process information stored in memory module according to instruction,
The sintering process parameter information that described control module passes out for receiving memory module, and control the temperature in body of heater according to the information received,
Described display module is used for the sintering process parameter information that the temperature information that passes out of real-time reception temperature sensor and memory module pass out, and by display screen, the above-mentioned temperature information received is shown.
(2) the sintering polytetrafluoroethylene device according to above-mentioned (1), is characterized in that, in described body of heater, be provided with heating tube, and described control module is by controlling the temperature in the described body of heater of described heating tube control.
(3) the sintering polytetrafluoroethylene device according to above-mentioned (2), is characterized in that, described heating tube is provided with relay, directly controls to be communicated with between electrothermal tube with power supply or to disconnect by described relay.
(4) the sintering polytetrafluoroethylene device according to above-mentioned (1), is characterized in that, the temperature in described temperature sensor Real-Time Monitoring body of heater, and the temperature information recorded is passed to described display module in real time.
(5) the sintering polytetrafluoroethylene device according to above-mentioned (1), is characterized in that, in described display screen, by temperature time history plot, the temperature information that display module receives is shown in real time.
(6) the sintering polytetrafluoroethylene device according to above-mentioned (5), it is characterized in that, the lines of the different colours be based upon under same coordinate system by two illustrate the sintering process information that in the body of heater that described temperature sensor passes out, temperature information and described memory module pass out.
(7) the sintering polytetrafluoroethylene device according to above-mentioned (1), it is characterized in that, described sintering polytetrafluoroethylene device also includes control panel, export predetermined sintering process parameter by memory module described in the button control on control panel, control described control module and start or stop sintering work.
(8) the sintering polytetrafluoroethylene device according to above-mentioned (1), is characterized in that, described body of heater has multiple, and the quantity of described body of heater is 20 ~ 25.
(9) the sintering polytetrafluoroethylene device according to above-mentioned (1), it is characterized in that, described computer system also comprises automatic alarm module, gives the alarm or stops heating when the described automatic alarm module temperature be used in body of heater reaches warning temperature.
A method for sintering polytetrafluoroethylene, is characterized in that, the method is undertaken by the sintering polytetrafluoroethylene device as described in any one of above-mentioned (1)-(9), and described method comprises the steps:
Step 1: the polytetrafluoroethylmaterial material through Re-stress process is positioned in body of heater, choose suitable sintering parameter by control panel in a storage module according to the size and dimension of described polytetrafluoroethylmaterial material, selected sintering parameter information is passed to control module by memory module automatically;
Step 2: keep polytetrafluoroethylmaterial material to be sintered to be in the room temperature of more than 19 degrees Celsius 3 ~ 4 hours,
Step 3: control described control module by control panel and start working, and then the heating tube work making control module automatically control in body of heater;
Wherein, the first stage, in body of heater, temperature is at the uniform velocity elevated to 327 degrees Celsius from room temperature and is incubated the scheduled time; Second stage, in body of heater, temperature is at the uniform velocity warmed up to 380 degrees Celsius from 327 degrees Celsius and is incubated the scheduled time; Phase III, in body of heater, temperature at the uniform velocity cools to 327 degrees Celsius from 380 degrees Celsius and is incubated the scheduled time, fourth stage, and in body of heater, temperature is at the uniform velocity fallen from 327 degrees Celsius and is warming up to 250 degrees Celsius;
Step 4: treat that in body of heater, temperature is cooled to room temperature taking-up polytetrafluoroethylmaterial material, or directly take out polytetrafluoroethylmaterial material.
The beneficial effect that the present invention has comprises:
(1) by arranging memory module, making sintering equipment provided by the invention can select the sintering method be applicable to fast, being convenient to operative, reducing operate miss;
(2) by arranging display module, making sintering equipment provided by the invention can demonstrate deviation in sintering temperature intuitively, the detailed record of production can be provided, be convenient to find reason.
Accompanying drawing explanation
Fig. 1 illustrates sintering polytetrafluoroethylene apparatus structure according to a kind of preferred embodiment of the present invention and information exchanging process schematic diagram.
Detailed description of the invention
Below by drawings and Examples, the present invention is described in more detail.Illustrated by these, the features and advantages of the invention will become more explicit.
Word " exemplary " special here means " as example, embodiment or illustrative ".Here need not be interpreted as being better than or being better than other embodiment as any embodiment illustrated by " exemplary ".Although the various aspects of embodiment shown in the drawings, unless otherwise indicated, accompanying drawing need not be drawn in proportion.
According to a kind of sintering polytetrafluoroethylene device provided by the invention, as shown in fig. 1, this device comprises department of computer science and to unify body of heater, the burner hearth for sintering is provided with in described body of heater, polytetrafluoroethylmaterial material to be sintered is placed in described burner hearth and carries out sintering work, and described computer system carries out the work such as sintering for controlling body of heater.
In one preferred embodiment, as shown in fig. 1, memory module is included in described computer system, the sintering process of multiple polytetrafluoroethylmaterial material is stored in described memory module, suitable sintering process can be selected according to the polytetrafluoroethylmaterial material of different size and shape, generally, bulky material sintering time is long; Wherein, multiple sintering process is all be stored in advance in the memory module of computer, when needing to use new sintering process, can be inputted by new sintering process artificially and be stored in described memory module; Another function of memory module passes out a certain sintering process parameter according to the instruction received, by arranging memory module, the low cost operation of polytetrafluoroethylmaterial material sintering can be realized, reduce the Capability Requirement to operator, be lowered into product cost, meanwhile, because workman is without the need to understanding concrete sintering process parameter, improve the confidentiality of sintering process.
Sintering process parameter described in the present invention comprises polytetrafluoroethylmaterial material when sintering in body of heater, variations in temperature time used and temperature retention time in body of heater in each stage, and within each time period the duty of heating tube, comprise make-and-break time and the break-make frequency of heating tube and power supply.
In one preferred embodiment, temperature sensor and heating tube is provided with in described body of heater, by heating tube, body of heater is heated, temperature in body of heater is made to reach predetermined value, thus sintering work is carried out to the polytetrafluoroethylmaterial material in body of heater, by the temperature in temperature sensor Real-Time Monitoring body of heater, and pass out temperature information in the body of heater that monitors in real time; Preferably, described temperature sensor is PLC Intelligent temperature controller.
In one preferred embodiment, described heating tube is provided with relay, directly controls to be communicated with between heating tube with power supply or to disconnect by described relay, thus reduce the loss speed of heating tube, in the sintering process of reality, heating tube is not continuous firing, but service intermittent, general heating tube power supply is connected power supply after 3 ~ 5 seconds and is disconnected 3 ~ 5 seconds, and then connect, thus variations in temperature is stablized in guarantee body of heater, or keep within the specific limits, preventing temperature shock.
In one preferred embodiment, as shown in fig. 1, control module is included in described computer system, the sintering process parameter information that control module passes out for receiving memory module, and according to the information received by the temperature in heating tube control body of heater, make temperature in body of heater consistent with the predetermined temperature passed out in memory module as much as possible.
In one preferred embodiment, as shown in fig. 1, in described computer, system includes display module, described display module receives the temperature information that temperature sensor passes out, also receive the sintering process parameter information that memory module passes out, described display module comprises display screen, shown the temperature in body of heater in real time by temperature time history plot in described display screen, simultaneously, the furnace body temperature change curve in time estimated in the whole sintering process that the sintering process parameter information passed out according to memory module by the display of other colored line is obtained, two temperature changing curve diagrams be based upon under same coordinate system by above-mentioned two can observe whether current furnace body temperature meets sintering process demand intuitively, and miss extent, clearly record the situation of change of each moment sintering temperature, so that provide record of production report accurately, thus can in depth analyze the impact of sintering temperature on properties of product according to producing report and sintering the properties of product obtained.
In one preferred embodiment, as shown in fig. 1, described sintering polytetrafluoroethylene device also includes control panel, exports predetermined sintering process parameter by memory module described in the button control on control panel, controls described control module and starts or stop sintering work.
In one preferred embodiment, described body of heater has multiple, 20 ~ 25 can be had, 20 bodies of heater are preferably set in the present invention, to all body of heater serial numbers, described display module at random can show the temperature variation curve of any one body of heater, and can record the temperature variations in the body of heater of each work respectively.
In one preferred embodiment, the control information of described control module passes to heating tube in body of heater and temperature sensor by converter, described converter is preferably chosen as RS485-232 converter, thus realize the accurate transfer of control command, reduce the maloperation that manual operation may cause.
In one preferred embodiment, as shown in fig. 1, automatic alarm module is also provided with in described computer system, the temperature difference numerically of expecting in the temperature in this module Real-Time Monitoring each moment of body of heater and memory module, the i.e. data message that receives of Real-Time Monitoring display module, when described difference reaches predetermined warning numerical value, automatic alert module report can give a warning, to notify that operating personnel process in time, or directly disconnect heating tube and power supply, thus avoid because of sintering temperature mistake damage polytetrafluoroethylmaterial material, wherein, described warning numerical value changes along with the dimensional variations of material to be sintered, in the present invention, preferably setting warning numerical value is 3, namely automatic alarm module work when actual temperature departs from predetermined temperature 3 degrees Celsius or exceeds 3 degrees Celsius in body of heater.
In one preferred embodiment, Real-Time Monitoring temperature described in the present invention and real-time displays temperature all refer to every two seconds monitoring temperature informations and are passed out, a temperature spot is demonstrated on a display screen every two seconds, by level and smooth line and curve connection between adjacent temperature spot, thus form temperature changing curve diagram.
According to the sintering method of polytetrafluoroethylene (PTFE) provided by the invention, this sintering method is realized by sintering equipment provided by the invention, and its concrete steps comprise:
Step 1: the polytetrafluoroethylmaterial material through Re-stress process is positioned in body of heater, choose suitable sintering parameter by control panel in a storage module according to the size and dimension of described polytetrafluoroethylmaterial material, selected sintering parameter information is passed to control module by memory module automatically; Wherein, Re-stress process is preferably places a period of time in atmosphere, more preferably selects placement 7 ~ 8 hours.
Step 2: keep polytetrafluoroethylmaterial material to be sintered to be in the room temperature of more than 19 degrees Celsius 3 ~ 4 hours, thus guarantee that the molecular activity of polytetrafluoroethylmaterial material is recovered.
Step 3: control described control module by control panel and start working, and then the heating tube work making control module automatically control in body of heater;
Wherein, the first stage, in body of heater, temperature is at the uniform velocity elevated to 327 degrees Celsius from room temperature and is incubated the scheduled time; Second stage, in body of heater, temperature is at the uniform velocity warmed up to 380 degrees Celsius from 327 degrees Celsius and is incubated the scheduled time; Phase III, in body of heater, temperature evenly cools to 327 degrees Celsius and be incubated the scheduled time from 380 degree Celsius, fourth stage, and in body of heater, temperature is warmed up to 250 degrees Celsius from 327 degrees centigrade even falling; The above-mentioned intensification time used, lower the temperature the time used and be incubated the time used all along with polytetrafluoroethylmaterial material size increase and proper extension.
Step 4: treat that in body of heater, temperature is cooled to room temperature taking-up polytetrafluoroethylmaterial material, now the performance of polytetrafluoroethylene (PTFE) is determined, for taking out the method for this material and being not particularly limited opportunity.
Embodiment
Utilize sintering polytetrafluoroethylene device provided by the invention to sinter a polytetrafluoroethylmaterial material, this material is the sleeve-shaped of both ends open, and the external diameter of this sleeve is 196mm, and internal diameter is 96mm, and sleeve height is 200mm.
Step 1: the above-mentioned material placing 8 hours is in atmosphere placed in body of heater, choose suitable sintering parameter by control panel in a storage module according to the size and dimension of described polytetrafluoroethylmaterial material, selected sintering parameter information is passed to control module by memory module automatically;
Step 2: control the room temperature 4 hours that in-furnace temperature remains on more than 19 degrees Celsius by heating tube.
Step 3: control described control module by control panel and start working, and then the heating tube work making control module automatically control in body of heater according to the sintering parameter received;
Wherein, the first stage, in body of heater, temperature is at the uniform velocity elevated to 327 degrees Celsius with time of 6 hours from room temperature, and is incubated 4 hours at 327 Celsius Conditions; Second stage, in body of heater, temperature is at the uniform velocity warmed up to 380 degrees Celsius with time of 2 hours from 327 degrees Celsius, and is incubated 4 hours at 380 Celsius Conditions; Phase III, in body of heater, temperature at the uniform velocity cools to 327 degrees Celsius with time of 5 hours from 380 degrees Celsius, is incubated 4 hours at 327 Celsius Conditions; Fourth stage, in body of heater, temperature at the uniform velocity cools to 250 degrees Celsius with time of 5 hours from 327 degrees Celsius.
Step 4: treat that in body of heater, temperature is cooled to room temperature taking-up polytetrafluoroethylmaterial material.
After the sintering that the method provided according to above-described embodiment obtains, polytetrafluoroethylene (PTFE) blank material meets following performance requirement: the polytetrafluoroethylene (PTFE) non-directional film obtained through turnery processing by this polytetrafluoroethylene (PTFE) blank rolls obtained orientation film again, specification is 0.035 × 40mm, the performance parameter that this orientation film has comprises hot strength>=50.0Mpa, elongation at break>=50%, dc breakdown voltage strength more than mean value 350KV/mm, 1MHz dielectric constant is 2.1, and density is 2.18g/cm
3.
The beneficial effect that the present invention has comprises:
(1) by arranging memory module, making sintering equipment provided by the invention can select the sintering method be applicable to fast, being convenient to operative, reducing operate miss;
(2) by arranging display module, making sintering equipment provided by the invention can demonstrate deviation in sintering temperature intuitively, the detailed record of production can be provided, be convenient to find reason.
More than combine and preferred embodiment describe the present invention, but these embodiments are only exemplary, only play illustrative effect.On this basis, can carry out multiple replacement and improvement to the present invention, these all fall within the scope of protection of the present invention.
Claims (10)
1. a sintering polytetrafluoroethylene device, is characterized in that, this device comprises body of heater and computer system, and polytetrafluoroethylmaterial material to be sintered is placed in described body of heater, described computer system for controlling the sintering work of described body of heater,
Temperature sensor is provided with in described body of heater,
Described computer system comprises memory module, control module and display module, and wherein, described memory module for storing the sintering process of multiple polytetrafluoroethylmaterial material, and passes out the sintering process information stored in memory module according to instruction,
The sintering process parameter information that described control module passes out for receiving memory module, and control the temperature in body of heater according to the information received,
Described display module is used for the sintering process parameter information that the temperature information that passes out of real-time reception temperature sensor and memory module pass out, and by display screen, the above-mentioned temperature information received is shown.
2. sintering polytetrafluoroethylene device according to claim 1, is characterized in that, in described body of heater, be provided with heating tube, and described control module is by controlling the temperature in the described body of heater of described heating tube control.
3. sintering polytetrafluoroethylene device according to claim 2, is characterized in that, described heating tube is provided with relay, directly controls to be communicated with between electrothermal tube with power supply or to disconnect by described relay.
4. sintering polytetrafluoroethylene device according to claim 1, is characterized in that, the temperature in described temperature sensor Real-Time Monitoring body of heater, and the temperature information recorded is passed to described display module in real time.
5. sintering polytetrafluoroethylene device according to claim 1, is characterized in that, in described display screen, by temperature time history plot, the temperature information that display module receives is shown in real time.
6. sintering polytetrafluoroethylene device according to claim 5, it is characterized in that, the lines of the different colours be based upon under same coordinate system by two illustrate the sintering process information that in the body of heater that described temperature sensor passes out, temperature information and described memory module pass out.
7. sintering polytetrafluoroethylene device according to claim 1, it is characterized in that, described sintering polytetrafluoroethylene device also includes control panel, export predetermined sintering process parameter by memory module described in the button control on control panel, control described control module and start or stop sintering work.
8. sintering polytetrafluoroethylene device according to claim 1, is characterized in that, described body of heater has multiple, and the quantity of described body of heater is 20 ~ 25.
9. sintering polytetrafluoroethylene device according to claim 1, is characterized in that, described computer system also comprises automatic alarm module, gives the alarm or stops heating when the described automatic alarm module temperature be used in body of heater reaches warning temperature.
10. a method for sintering polytetrafluoroethylene, is characterized in that, the method is undertaken by the sintering polytetrafluoroethylene device as described in claim 1-9 any one, and described method comprises the steps:
Step 1: the polytetrafluoroethylmaterial material through Re-stress process is positioned in body of heater, choose suitable sintering parameter by control panel in a storage module according to the size and dimension of described polytetrafluoroethylmaterial material, selected sintering parameter information is passed to control module by memory module automatically;
Step 2: keep polytetrafluoroethylmaterial material to be sintered to be in the room temperature of more than 19 degrees Celsius 3 ~ 4 hours,
Step 3: control described control module by control panel and start working, and then the heating tube work making control module automatically control in body of heater;
Wherein, the first stage, in body of heater, temperature is at the uniform velocity elevated to 327 degrees Celsius from room temperature and is incubated the scheduled time; Second stage, in body of heater, temperature is at the uniform velocity warmed up to 380 degrees Celsius from 327 degrees Celsius and is incubated the scheduled time; Phase III, in body of heater, temperature at the uniform velocity cools to 327 degrees Celsius from 380 degrees Celsius and is incubated the scheduled time, fourth stage, and in body of heater, temperature is at the uniform velocity fallen from 327 degrees Celsius and is warming up to 250 degrees Celsius;
Step 4: treat that in body of heater, temperature is cooled to room temperature taking-up polytetrafluoroethylmaterial material, or directly take out polytetrafluoroethylmaterial material.
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| CN109808175A (en) * | 2019-01-30 | 2019-05-28 | 湖南华曙高科技有限责任公司 | A kind of powder supply cylinder preheating control method and its control system, readable storage medium storing program for executing |
| CN112848356A (en) * | 2020-12-08 | 2021-05-28 | 湖州汇业新材料科技有限公司 | Novel polytetrafluoroethylene film sintering device and method |
| CN114290700A (en) * | 2021-12-29 | 2022-04-08 | 辽宁实发洁净科技有限公司 | Sintering method of plastic sintered plate base material |
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| CN114290700A (en) * | 2021-12-29 | 2022-04-08 | 辽宁实发洁净科技有限公司 | Sintering method of plastic sintered plate base material |
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