CN104400885A - Temperature and pressure maintaining method for magnesite board - Google Patents

Temperature and pressure maintaining method for magnesite board Download PDF

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Publication number
CN104400885A
CN104400885A CN201410501053.1A CN201410501053A CN104400885A CN 104400885 A CN104400885 A CN 104400885A CN 201410501053 A CN201410501053 A CN 201410501053A CN 104400885 A CN104400885 A CN 104400885A
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CN
China
Prior art keywords
pressure
maintaining machine
heat
cold press
insulation
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CN201410501053.1A
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Chinese (zh)
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CN104400885B (en
Inventor
王辉
李亿彬
段光胜
田立全
段利锋
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深圳市纳瑞科技有限公司
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Priority to CN201410501053.1A priority Critical patent/CN104400885B/en
Publication of CN104400885A publication Critical patent/CN104400885A/en
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Publication of CN104400885B publication Critical patent/CN104400885B/en

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    • BPERFORMING OPERATIONS; TRANSPORTING
    • B28WORKING CEMENT, CLAY, OR STONE
    • B28BSHAPING CLAY OR OTHER CERAMIC COMPOSITIONS, SLAG, OR MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER
    • B28B3/00Producing shaped articles from the material by using presses; Presses specially adapted therefor
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B28WORKING CEMENT, CLAY, OR STONE
    • B28BSHAPING CLAY OR OTHER CERAMIC COMPOSITIONS, SLAG, OR MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER
    • B28B17/00Details of, or accessories for, apparatus for shaping the material; Auxiliary measures taken in connection with such shaping

Abstract

The invention discloses a temperature and pressure maintaining method of a magnesite board. The method comprises the following steps: (1) the product is conveyed to a single-layer cold press and is subjected to cold pressing conducted by the single-layer cold press; (2) the product is conveyed to microwave heating equipment after the cold pressing and is preheated by the microwave heating equipment; (3) after the preheating is finished, the product is conveyed to a pressure maintaining machine and is continuously and stably pressed by the pressure maintaining machine; (4) when the product is being continuously pressed by the pressure maintaining machine, a heating device on the pressure maintaining machine continuously heats the product; and (5) after the temperature maintenance and pressure maintenance are finished, the product is moved out of the pressure maintaining machine and is conveyed for a next procedure. According to the invention, the product is subjected to a single-process cold pressing and a single-process preheating in advance before pressure maintenance and temperature maintenance treatment, so that the temperature and pressure maintenance difficulty and time are obviously reduced, the energy consumption is decreased, and the working efficiency is improved.

Description

The heat-insulation pressure keeping method of magnesite board

Technical field

The invention belongs to magnesite board production field, particularly relate to a kind of heat-insulation pressure keeping method of magnesite board.

Background technology

Magnesite board, another name: PLASTIC LAMINATED, glass magnesium plate, fine particle calcium carbonate plate, magnesium mineral board, calcium silicate board, be with incombustible material chlorine oxygen magnesium, magnesia, alkali-resisting glass fiber cloth, wood chip etc. for main material, process through a complete set of Automated production line device by special producing technique.Have environmental protection, tasteless, nontoxic, do not fire smokeless, high-strength light weight, sound-insulating, waterproof fireproofing, do not freeze be stale-proof, breathing rate is atomic and do not split, the multiple advantages such as indeformable.

In the production technology of magnesite board, need to carry out continuous heating to magnesite board and persistent pressure obtains final products to impel each composition of magnesite board to react to each other.In magnesite board heat-insulation pressure keeping moulding process in the past, for once pressing process and a heating process, continuous heating insulation while compacting.The shortcoming of this technique is when suppressing, and continuous heating insulation makes oil oven device systems need long-time hot operation, and therefore, this technique has very important potential safety hazard; And the energy consumption of the method is large, inefficiency, the production cycle of product is long.

Summary of the invention

For not enough in above-mentioned technology, the invention provides a kind of work safety, operating efficiency high the heat-insulation pressure keeping method of magnesite board.

For achieving the above object, the invention provides a kind of heat-insulation pressure keeping method of magnesite board, comprise following step:

Step one, is delivered to individual layer cold press by product, colded pressing by individual layer cold press;

Step 2, is delivered to microwave heating equipment place by the product after colding pressing, is preheated by microwave heating equipment to product;

Step 3, after having preheated, is delivered to pressure-maintaining machine by product, and pressure-maintaining machine carries out the stable compacting continued to product;

Step 4, while pressure-maintaining machine is to product persistent pressure, the heater on pressure-maintaining machine continues to heat product;

Step 5, heat-insulation pressure keeping completes, and is shifted out by product, be delivered to next process in pressure-maintaining machine.

Wherein, the non-metallic material of the cope match-plate pattern that product uses and lower bolster for the benefit of heating using microwave, the heater on described pressure-maintaining machine is microwave heating equipment or Hot air blast device.

Wherein, the pressure-maintaining machine described in step 3 is provided with multilayer pressing plate, and the tow sides of every laminate are respectively equipped with electromagnetic heater, the upper and lower surface of two pressing plates difference heating products of product clamping.

Wherein, the electromagnetic heater be arranged on pressing plate is Electromagnetic Heating plate, and described Electromagnetic Heating plate is electrically connected with temperature adjustment control circuit board.

Wherein, the cold press in described step one is individual layer cold press, and the pressure-maintaining machine in described step 3 is multiple field pressure-maintaining machine.

Wherein, in described step one, the pressure of individual layer cold press is 50T, and in described step 3, the pressure of multiple field pressure-maintaining machine is 50T.

The invention has the beneficial effects as follows: compared to prior art, the heat-insulation pressure keeping method of magnesite board provided by the invention, first utilize individual layer cold press to carry out individual layer to product to cold pressing, and then by pressure-maintaining machine pressurize, because the operating efficiency of individual layer cold press is high, product thickness can be pressed into designated value rapidly, and pressure-maintaining machine afterwards only maintains pressure, therefore can reduce the output pressure of pressure-maintaining machine; The mode of above-mentioned substep compacting both can be increased work efficiency, capable of reducing energy consumption again.Suppress similar with substep, heating also adopts stepping mode to carry out, and first utilizes microwave heating equipment to carry out preheating to the product after matched moulds, to improve product temperature rapidly, after arrival assigned temperature, be delivered to pressure-maintaining machine, continued to heat product to reach insulation object by electromagnetic heating apparatus in pressure-maintaining machine; The operation that this first preheating is incubated again, is conducive to the production cycle shortening product, improves equipment operating efficiency, reduce energy consumption.

Accompanying drawing explanation

The process chart of the heat-insulation pressure keeping method of Fig. 1 magnesite board provided by the invention.

Detailed description of the invention

In order to more clearly state the present invention, below in conjunction with accompanying drawing, the present invention is further described.

Refer to Fig. 1, the heat-insulation pressure keeping method of magnesite board provided by the invention, comprises following step:

Step one, is delivered to individual layer cold press by product, colded pressing by individual layer cold press;

Step 2, is delivered to microwave heating equipment place by the product after colding pressing, is preheated by microwave heating equipment to product;

Step 3, after having preheated, is delivered to pressure-maintaining machine by product, and pressure-maintaining machine carries out the stable compacting continued to product;

Step 4, while pressure-maintaining machine is to product persistent pressure, the heater on pressure-maintaining machine continues to heat product;

Step 5, heat-insulation pressure keeping completes, and is shifted out by product, be delivered to next process in pressure-maintaining machine.

Compared to prior art, the heat-insulation pressure keeping method of magnesite board provided by the invention, first utilize individual layer cold press to carry out individual layer to product to cold pressing, and then by pressure-maintaining machine pressurize, because the operating efficiency of individual layer cold press is high, product thickness can be pressed into designated value rapidly, and pressure-maintaining machine afterwards only maintains pressure, therefore can reduce the output pressure of pressure-maintaining machine; The mode of above-mentioned substep compacting both can be increased work efficiency, capable of reducing energy consumption again.Suppress similar with substep, heating also adopts stepping mode to carry out, and first utilizes microwave heating equipment to carry out preheating to the product after matched moulds, to improve product temperature rapidly, after arrival assigned temperature, be delivered to pressure-maintaining machine, continued to heat product to reach insulation object by electromagnetic heating apparatus in pressure-maintaining machine; The operation that this first preheating is incubated again, is conducive to the production cycle shortening product, improves equipment operating efficiency, reduce energy consumption.

In sum, the heat-insulation pressure keeping method of magnesite board provided by the invention, before heat-insulation pressure keeping is shaping, a cold moudling and a preheating have first been carried out to product, obviously alleviate difficulty and the time of the heat-insulation pressure keeping carried out below, decrease energy consumption, improve operating efficiency.

In addition, replace traditional hot oil furnace owing to have employed microwave heating equipment, the floor space of equipment can be reduced, reduce costs, also can improve the security of equipment work.Microwave heating equipment why is adopted to replace traditional hot oil furnace, also because microwave heating method tool has the following advantages:

General heating means rely on the environment of circumference, with the radiation of heat or by the mode of hot-air convection, the surface of object are first heated, then by the inside of heat transfer conductive object; This method efficiency is low, and the heat time is long, and ambient temperature is also higher, causes personnel and equipment to work in high temperature environments all for a long time.

The maximum feature of heating using microwave is, microwave produces in heating object inside, and thermal source is from interior of articles, and homogeneous heating, simultaneously because " inside and outside heating " substantially reduces the heat time simultaneously, the efficiency of heating surface is high, is conducive to improving product yield.And the inertia of heating using microwave is very little, the quick control of gradient of temperature can be realized, be conducive to continuous seepage quota and automatically control.

Secondly, because microwave is directly to hydrone generation effect, effect saves energy cost more than 40% than traditional drying pattern.Realize quick, even, efficient drying effect.Microwave heating equipment, thoroughly solves traditional drying mode heavily contaminated, high energy consumption, inefficient problem.

Traditional heat-insulation pressure keeping technique adopts the mode of heating of oil heat, and in order to improve heat conduction efficiency, cope match-plate pattern and lower bolster adopt the metal material that thermal conductivity is good.And the heat-insulation pressure keeping method of magnesite board provided by the invention, the cope match-plate pattern that product uses and lower bolster are non-metallic material, are conducive to the preheating of microwave heating equipment to product.In heat-insulation pressure keeping process, the heater on pressure-maintaining machine can adopt the microwave heating equipment same with preheating procedure, also can adopt Hot air blast device.

In the present embodiment, the pressure-maintaining machine in step 3 is provided with multilayer pressing plate, the upper and lower surface of two pressing plates difference heating products of product clamping; Every laminate is respectively equipped with electromagnetic heating apparatus, and heat temperature raising is fast, high insulating effect, and the heat insulation effect of each product evenly.

Specifically, the electromagnetic heater be arranged on pressing plate is Electromagnetic Heating plate, and Electromagnetic Heating plate is electrically connected with temperature adjustment control circuit board.Electromagnetic Heating plate can bear very large pressure, can heat to product persistent pressure; Due to employing is electromagnetic heating apparatus, after being equipped with temperature adjustment control circuit, can adjust temperature very easily.

In the present embodiment, in step one, cold press is individual layer cold press, and carry out individual layer to product and cold pressing, efficiency of colding pressing is high, rapidly product thickness can be pressed into designated value rapidly; After colding pressing, less to the pressure demand of pressure-maintaining machine, pressure-maintaining machine only needs to keep this pressure, and therefore pressure-maintaining machine can arrange multilayer pressing plate, to raise the efficiency.

Specifically, in traditional handicraft, utilize multi-layer heat preserving pressure-maintaining machine once to suppress, its pressure needs 1000T-1200T.And have employed individual layer cold press pre-stamped after, in step one, the pressure of individual layer cold press selects 50T.

Be only several specific embodiment of the present invention above, but the present invention is not limited thereto, the changes that any person skilled in the art can think of all should fall into protection scope of the present invention.

Claims (6)

1. a heat-insulation pressure keeping method for magnesite board, is characterized in that, comprises following step:
Step one, is delivered to individual layer cold press by product, colded pressing by individual layer cold press;
Step 2, is delivered to microwave heating equipment place by the product after colding pressing, is preheated by microwave heating equipment to product;
Step 3, after having preheated, is delivered to pressure-maintaining machine by product, and pressure-maintaining machine carries out the stable compacting continued to product;
Step 4, while pressure-maintaining machine is to product persistent pressure, the heater on pressure-maintaining machine continues to heat product;
Step 5, heat-insulation pressure keeping completes, and is shifted out by product, be delivered to next process in pressure-maintaining machine.
2. the heat-insulation pressure keeping method of magnesite board according to claim 1, is characterized in that, the non-metallic material of the cope match-plate pattern that product uses and lower bolster for the benefit of heating using microwave, the heater on described pressure-maintaining machine is microwave heating equipment or Hot air blast device.
3. the heat-insulation pressure keeping method of magnesite board according to claim 1, it is characterized in that, pressure-maintaining machine described in step 3 is provided with multilayer pressing plate, and the tow sides of every laminate are respectively equipped with electromagnetic heater, the upper and lower surface of two pressing plates difference heating products of product clamping.
4. the heat-insulation pressure keeping method of magnesite board according to claim 3, is characterized in that, the electromagnetic heater be arranged on pressing plate is Electromagnetic Heating plate, and described Electromagnetic Heating plate is electrically connected with temperature adjustment control circuit board.
5. the heat-insulation pressure keeping method of magnesite board according to claim 1, is characterized in that, the cold press in described step one is individual layer cold press, and the pressure-maintaining machine in described step 3 is multiple field pressure-maintaining machine.
6. the heat-insulation pressure keeping method of magnesite board according to claim 5, is characterized in that, in described step one, the pressure of individual layer cold press is 50T.
CN201410501053.1A 2014-09-26 2014-09-26 The heat-insulation pressure keeping method of magnesite board CN104400885B (en)

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Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3353236A (en) * 1963-08-20 1967-11-21 U S Perlite Corp Apparatus for producing acoustical tile
JPS5411325B2 (en) * 1975-01-17 1979-05-14
JPS5640002B2 (en) * 1974-05-30 1981-09-17
AT8846U1 (en) * 2005-09-30 2007-01-15 Betonwerk Rieder Ges M B H Method for producing an soundproofing wall element
CN101386218A (en) * 2007-09-14 2009-03-18 四川得阳化学有限公司 Manufacture method of polyphenyl thioether fiber composite laminate sheet
CN101672072A (en) * 2009-08-10 2010-03-17 邱天祥 Sound insulation composite board and manufacture method
CN102060470A (en) * 2010-11-12 2011-05-18 武汉纺织大学 Expanded vitrified micro-bead fireproof thermal-insulation board and preparation method thereof
CN102218876A (en) * 2011-05-23 2011-10-19 天津大学 Reproducible surface high-intensity fire-proof plate and manufacture method thereof

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3353236A (en) * 1963-08-20 1967-11-21 U S Perlite Corp Apparatus for producing acoustical tile
JPS5640002B2 (en) * 1974-05-30 1981-09-17
JPS5411325B2 (en) * 1975-01-17 1979-05-14
AT8846U1 (en) * 2005-09-30 2007-01-15 Betonwerk Rieder Ges M B H Method for producing an soundproofing wall element
CN101386218A (en) * 2007-09-14 2009-03-18 四川得阳化学有限公司 Manufacture method of polyphenyl thioether fiber composite laminate sheet
CN101672072A (en) * 2009-08-10 2010-03-17 邱天祥 Sound insulation composite board and manufacture method
CN102060470A (en) * 2010-11-12 2011-05-18 武汉纺织大学 Expanded vitrified micro-bead fireproof thermal-insulation board and preparation method thereof
CN102218876A (en) * 2011-05-23 2011-10-19 天津大学 Reproducible surface high-intensity fire-proof plate and manufacture method thereof

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