CN103128818A - Gradient ramp cotton wood weighting sawn timber, manufacture method and gradual change heat treatment device - Google Patents
Gradient ramp cotton wood weighting sawn timber, manufacture method and gradual change heat treatment device Download PDFInfo
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- CN103128818A CN103128818A CN2013100675110A CN201310067511A CN103128818A CN 103128818 A CN103128818 A CN 103128818A CN 2013100675110 A CN2013100675110 A CN 2013100675110A CN 201310067511 A CN201310067511 A CN 201310067511A CN 103128818 A CN103128818 A CN 103128818A
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Abstract
The invention discloses a gradient ramp cotton wood weighting sawn timber, a manufacture method and a gradual change heat treatment device. The gradient ramp cotton wood weighting sawn timber has gradual change colors from deep to light along the length direction. The manufacture method of the sawn timber comprises primary drying, microwave pretreatment, impregnation pretreatment, secondary drying and gradual change heat treatment. The invention also discloses the gradual change heat treatment device, which comprise a stainless steel cylindrical shell and a heating device arranged at the bottom of the stainless steel cylindrical shell, the stainless steel cylindrical shell is vertically arranged on the heating device, a cavity capable of placing the timber vertically along the length direction in the stainless steel cylindrical shell, and a fixing device used for fixing the timber is provided in the cavity. The gradient ramp cotton wood weighting sawn timber has the characteristics of high density, good decorative effect, stable size and excellent weather resistance durability. The manufacture method is easy and convenient to be carried out, the cost is low, the gradual change heat treatment device has simple structure, good security and stability.
Description
Technical field
The present invention relates to a kind of novel sawn timber and manufacture method and annealing device take poplar as main material, relate in particular to a kind of gradient color poplar weightening finish sawn timber and manufacture method and gradual change annealing device, the Wood Property Improvement and the wood-based plate that belong in timber industry are made the field.
Background technology
Timber is unique renewable natural polymer biological material in four large construction materials, and it has the series of advantages such as renewable, easy processing, natural beautiful decorative pattern, is widely used in the aspects such as building, Furniture manufacture, interior decoration.But simultaneously, timber is as a kind of biological material, and himself also exists some natural defects and deficiency, has in different directions the invasion and attack of the wet characteristic that rises of different drying shrinkage, easily insect infestation etc. as timber.When therefore timber uses in humidity and temperature variation environment greatly for a long time, easily produce and be out of shape and cracking defect.When (as outdoor) uses in the higher environment of humidity, the easy variable color of timber, rotten etc.These defectives have seriously restricted the scope of application of timber-work to a great extent, have shortened its service life.
Growth of poplar speed is fast, distribution area is wide, timber reserves is large, is one of China topmost three large quick-growing plantation seeds.But poplar wood also exists the above-mentioned defective of mentioning, and in addition, poplar wood exists also that material is soft, intensity and the defective such as density is low.Therefore, for a long time, poplar wood can only be taken as low grade, material inferior uses.For this reason, China's timber scientific worker has carried out large quantity research at aspects such as quick growth poplar wood wood property, bleaching and dyeing, timber densification, high temperature carbonization, size stabilization processing in recent years, obtain a collection of technological achievement with promotional value, promoted the processing and utilization level of China's poplar wood.At present, the application of China's artificial forest poplar wood expands to the fields such as glued board, core-board, medium density fibre board (MDF), particieboard and the manufacturing of solid wood jigsaw by the performance requirements such as initial grange building materials, match, disposable chopsticks and the low product of added value, and the application of poplar wood and added value of product are expanded and promote.However, poplar wood is in the application of solid wood value segment still achieving no breakthrough property progress, poplar wood high-quality, efficiently utilize a difficult problem still to demand urgently cracking.Therefore, use new technological means, exploitation has the poplar sawn timber of higher density, excellent in dimension stability and weather-proof durability, different decorative effects, to expanding the poplar wood application and satisfying the growing material requisite of people, has very important significance.
Summary of the invention
the technical problem to be solved in the present invention is to overcome the deficiencies in the prior art, a kind of higher density that has is provided, excellent dimensional stability and weather-proof durability, the sawn timber of the gradient color poplar of decorative effect weightening finish preferably, also provide a kind of simple, the manufacture method of gradient color poplar weightening finish sawn timber with low cost, and correspondingly provide a kind of wood dimensional stability and weather-proof durability of improving, can solve current thermal treatment equipment can't make timber present along its length the problem of globality change color and the gradual change annealing device of Microwave Pretreatment-free aldehyde of resin weightening finish material existence and free phenol release And Spread of Solute.
For solving the problems of the technologies described above, the technical scheme that the present invention proposes is a kind of gradient color poplar weightening finish sawn timber (abbreviation sawn timber), described gradient color poplar weightening finish sawn timber has from deep to shallow gradual change color along its length direction, and the density of described gradient color poplar weightening finish sawn timber is 0.5g/cm
3～0.9g/cm
3
As a total technical conceive, the present invention also provides a kind of manufacture method of gradient color poplar weightening finish sawn timber, comprises the following steps:
(1) primary drying: it is 25%～40% that the poplar moist wood is dried to moisture content, often adopts the method for kiln drying or air drying, gets the poplar sawn timber;
(2) Microwave Pretreatment: the poplar sawn timber after primary drying is carried out Microwave Pretreatment, generally adopt tunnel type high-intensity microwave pre-processing device, the temperature of Microwave Pretreatment is controlled at 120 ℃～160 ℃, and the time of Microwave Pretreatment is controlled at 5s～15s;
(3) impregnate processing: the poplar sawn timber after Microwave Pretreatment and adhesive are carried out the vacuum pressure impregnating processing, impregnating processing procedure generally carries out in the HIGH PRESSURE TREATMENT tank, with the HIGH PRESSURE TREATMENT tank of packing into of the poplar sawn timber after Microwave Pretreatment, then carrying out the initial vacuum processes, vacuum degree control is at 0.05MPa～0.08MPa, keep 10min～30min, pump into adhesive and pressurization again in the HIGH PRESSURE TREATMENT tank, impregnate pressure and be controlled at 0.30MPa～1.00MPa, the time of impregnating is controlled at 10min～60min, get poplar weightening finish sawn timber, after impregnating the processing end, take out poplar weightening finish sawn timber, and standing 4h～8h,
(4) redrying: will impregnate poplar weightening finish sawn timber redrying after processing to moisture content less than 10%, generally adopt the conventional drying kiln to process, the temperature of kiln inner drying medium-humid air is controlled at 40 ℃～65 ℃;
(5) gradual change heat treatment: the weightening finish of the poplar after redrying sawn timber is positioned in a gradual change annealing device carries out gradual change heat treatment, the heat treated temperature of gradual change is controlled at 140 ℃～250 ℃, the heat treated time of gradual change is controlled at 30min～240min, after gradual change heat treatment is completed, obtain gradient color poplar weightening finish sawn timber.
After above-mentioned manufacture method, gained gradient color poplar weightening finish sawn timber is preferably carried out post-processed, the process of described post-processed is: carry out the gradient color poplar weightening finish sawn timber that obtains after gradual change heat treatment cooling, when the temperature bottom gradient color poplar weightening finish sawn timber is reduced to below 100 ℃, gradient color poplar weightening finish sawn timber is carried out damping to be processed, after damping is finished dealing with, gradient color poplar weightening finish sawn timber is taken out from the gradual change annealing device, be placed in indoor close storing up and put.
In above-mentioned method, adhesive preferred water dissolubility urea-formaldehyde resin adhesive or phenolic resin adhesive described in step (3), the solids content of described adhesive preferred 40%～60%.
in the gradual change heat treatment process of the described step of said method (5), preferably, described gradual change annealing device comprises that stainless steel cylinder is (by stainless steel inner container, heat-insulation layer and stainless steel casing form) and be located at heater bottom stainless steel cylinder, described stainless steel cylinder vertically is installed on described heater, one cavity that poplar weightening finish sawn timber is vertically placed is along its length arranged in described stainless steel cylinder, be provided with the fixture for fixing poplar weightening finish sawn timber in described cavity, described heater comprises the heat-conducting oil heating casing, the heat transfer oil electric heating case, heat conduction oil circulating pump, y-type filter and oil water separator, the both sides of described heat-conducting oil heating casing are connected with a flowline with an oil inlet pipe respectively, described oil inlet pipe, the heat-conducting oil heating casing, flowline, oil water separator, y-type filter, heat conduction oil circulating pump and heat transfer oil electric heating case connect to form an oil circulation system successively.In described gradual change annealing device, conduction oil is housed, the temperature of described conduction oil is controlled at 160 ℃～270 ℃.
In the gradual change annealing device of the described step of said method (5), preferably, the barrel of described stainless steel cylinder is provided with the reservation temperature-measuring port for monitoring poplar weightening finish sawn timber or heating medium temp, the top of described stainless steel cylinder is provided with the upper cover for up and down temperature difference in the regulation and control stainless steel cylinder, the bottom of described stainless steel cylinder is connected with a humidifier tube, described fixture comprises retainer ring and lower retainer ring, described timber is vertically placed in described stainless steel cylinder, and its two ends, up and down are fixed by upper retainer ring and lower retainer ring respectively.
As a total technical conceive, the present invention also provides a kind of gradual change annealing device that can be used for making gradient color timber, described device comprises stainless steel cylinder (being comprised of stainless steel inner container, heat-insulation layer and stainless steel casing) and is located at the heater of stainless steel cylinder bottom, described stainless steel cylinder vertically is installed on described heater, one cavity that timber is vertically placed is along its length arranged in described stainless steel cylinder, be provided with in described cavity for the fixing fixture of timber.This gradual change annealing device can be used for above-mentioned poplar weightening finish sawn timber is carried out gradual change heat treatment.
In said apparatus, preferred, the barrel of described stainless steel cylinder is provided with the reservation temperature-measuring port for monitoring timber or heating medium temp.The top of described stainless steel cylinder is provided with the upper cover for up and down temperature difference in the regulation and control stainless steel cylinder, described upper cover on the top of stainless steel cylinder by opening or closed mode regulates and controls the temperature difference in stainless steel cylinder, when cylindrical shell lower end and upper end temperature difference when excessive, use the cover encloses cylinder top, the temperature of raising cylindrical shell upper end timber reduces the excessive temperature difference of timber upper/lower terminal.Described stainless steel cylinder is comprised of stainless steel inner container, heat-insulation layer and stainless steel casing, can fill asbestos in the heat-insulation layer of stainless steel cylinder, and is too fast to prevent barrel radiation, plays heat insulation effect.The bottom of described stainless steel cylinder is connected with a humidifier tube, thereby described humidifier tube carries out the damping processing by introduce water vapour in stainless steel cylinder to timber in cylinder, and this process is generally carried out after gradual change heat treatment is completed.The bottom of stainless steel cylinder also is provided with two hand holes that are symmetric, and is used for mobile this stainless steel cylinder.Described fixture comprises retainer ring and lower retainer ring, and described timber is vertically placed in described stainless steel cylinder, and its two ends, up and down are fixed by upper retainer ring and lower retainer ring respectively.
In said apparatus, preferably, described heater comprises heat-conducting oil heating casing, heat transfer oil electric heating case, heat conduction oil circulating pump, y-type filter and oil water separator, described stainless steel cylinder vertically is installed on described heat-conducting oil heating casing, described heat-conducting oil heating casing provides heat energy to described stainless steel cylinder, makes that in described stainless steel cylinder, formation temperature is poor from bottom to top; The both sides of described heat-conducting oil heating casing are connected with a flowline with an oil inlet pipe respectively, the both sides of described heat-conducting oil heating casing are connected with a flowline with an oil inlet pipe respectively, described oil inlet pipe, heat-conducting oil heating casing, flowline, oil water separator, y-type filter, heat conduction oil circulating pump and heat transfer oil electric heating case connect to form an oil circulation system successively, and conduction oil circulates in described oil circulation system.Wherein, described y-type filter is used for filtering the impurity that oil circuit produces, and avoids stopping up valve, and described oil water separator is for separating of the moisture in oil circuit.
In said apparatus, preferably, the electrical control cubicles that described heat transfer oil electric heating case and is used for regulation and control heat-conducting oil heating temperature is connected, and conduction oil is heated in described heat transfer oil electric heating case, and the temperature of conduction oil is controlled (generally in 160 ℃～270 ℃ scopes) automatically by electrical control cubicles; The rotating speed of described heat conduction oil circulating pump is stepless speed regulation, and this heat conduction oil circulating pump is mainly used in making high temperature heat conductive oil to circulate in described oil circulation system; Described oil water separator is connected with an expansion tank, and described expansion tank communicates with atmosphere, prevents in heat-conducting oil heating or cooling procedure because the variation of expanding with heat and contract with cold damages oil piping system and equipment.
Compared with prior art, the invention has the advantages that:
(1) gradient color poplar of the present invention weightening finish sawn timber has that density is higher, dimensional stability and weather-proof excellent in te pins of durability, presents from deep to shallow gradual change color, can obtain the brand-new characteristics such as decorative effect along the length direction, overcome that the material that existing poplar exists is soft, intensity and density is low, yielding, apt to rot, color is single, decorative effect is poor defective, can be widely used in the fields such as Furniture manufacture, indoor and outdoor decoration, expand the range of application of poplar, improved the added value of poplar goods.
(2) manufacture method of the present invention is simple, with low cost, effect is remarkable, wherein Microwave Pretreatment can make the microstructure of poplar sawn timber inside produce to destroy, improve the permeability of poplar sawn timber, and improve later stage poplar sawn timber impregnate efficient and the amount of impregnating, impregnating processing can be with resin filling in the poplar lumen, reach the purpose that increases poplar density and intensity, the method can effectively be prepared the poplar weightening finish sawn timber with gradual change color, has promoted the processing and utilization level of China's poplar.
(3) stainless steel cylinder of the vertical installing of gradual change annealing device of the present invention utilization has built a temperature field that temperature reduces gradually from bottom to top in cylindrical shell, thereby realized timber in cylindrical shell is heat-treated to from deep to shallow gradual change color along its length, the temperature difference up and down of the upper cover temperature-controlled field on stainless steel cylinder top, thereby the shade intensity of variation of indirect regulation timber makes gained gradient color timber have brand-new decorative effect.The humidifier that the stainless steel cylinder bottom connects can carry out damping to gradient color timber to be processed, thereby increases gradient color timber dimensional stability and weather-proof durability in use, extends its service life.
Description of drawings
Fig. 1 is the structural representation of gradual change annealing device in the present invention.
Marginal data:
1, electrical control cubicles; 2, heat transfer oil electric heating case; 3, heat conduction oil circulating pump; 4, y-type filter; 5, oil water separator; 6, expansion tank; 7, heat-conducting oil heating casing; 8, flowline; 9, stainless steel cylinder; 10, upper cover; 11, upper retainer ring; 12, reserve temperature-measuring port; 13, heat-insulation layer; 14, hand hole; 15, lower retainer ring; 16, humidifier tube; 17, oil inlet pipe.
The specific embodiment
The invention will be further described with concrete preferred embodiment below in conjunction with Figure of description, but protection domain not thereby limiting the invention.
Embodiment 1:
A kind of gradient color poplar of the present invention weightening finish sawn timber, this gradient color poplar weightening finish sawn timber has from deep to shallow gradual change color along its length direction, and the density of this gradient color poplar weightening finish sawn timber is 0.58g/cm
3
A kind of manufacture method of gradient color poplar weightening finish sawn timber of the present invention comprises the following steps:
(1) primary drying: adopting the air drying method poplar moist wood that moisture content is higher (specification: length is 1.9m, and wide is 15cm, and thickness is 35mm) to be dried to moisture content is 30%, gets the poplar sawn timber.
(2) Microwave Pretreatment: the poplar sawn timber after primary drying is placed on the crawler belt of tunnel type high-intensity microwave pre-processing device that rated power is 40kW, it is delivered in microwave cavity, open microwave generator, poplar sawn timber internal temperature is rapidly heated to 130 ℃, and kept 10 seconds.
(3) impregnate processing: at first prepare solids content and be 50% urea-formaldehyde resin aqueous solution, then the material car of the poplar sawn timber after Microwave Pretreatment being packed into, the material car is pushed in the HIGH PRESSURE TREATMENT tank, close HIGH PRESSURE TREATMENT tank closing door, open vavuum pump and carry out the initial vacuum processing, vacuum degree control is at 0.06MPa, and keep letting out vacuum after 15min, pump into urea-formaldehyde resin aqueous solution in the HIGH PRESSURE TREATMENT tank, and with the boost in pressure of urea-formaldehyde resin aqueous solution in the HIGH PRESSURE TREATMENT tank to 0.4MPa, pressure after maintenance 30min in venting HIGH PRESSURE TREATMENT tank, open closing door, to impregnate the poplar weightening finish sawn timber that obtains after processing and haul out process tank, and standing 5h.
(4) redrying: will impregnate poplar weightening finish sawn timber after processing and pack into and carry out drying processing in the conventional drying kiln, the temperature of kiln inner drying medium-humid air is controlled at 50 ℃, be dried to moisture content be 8%.
(5) gradual change heat treatment: the weightening finish of the poplar after redrying sawn timber is positioned over one is equipped with in the gradual change annealing device of conduction oil, the heat treated temperature of gradual change is controlled at 220 ℃, the heat treated time of gradual change is controlled at 40min, after gradual change heat treatment is completed, obtains gradient color poplar weightening finish sawn timber.
Gradient color poplar weightening finish sawn timber obtained above is carried out post-processed, its process is: carry out the weightening finish of the gradient color poplar after gradual change heat treatment sawn timber cooling, when the temperature bottom gradient color poplar weightening finish sawn timber is reduced to 90 ℃, it is carried out damping processes, after handling, gradient color poplar weightening finish sawn timber is taken out from the gradual change annealing device, be placed in indoor close storing up and put, the resting period is controlled at 14 days.
The gradual change annealing device that uses in the manufacture method of above-mentioned gradient color poplar weightening finish sawn timber as shown in Figure 1, this device comprises stainless steel cylinder 9 and is located at the heater of stainless steel cylinder 9 bottoms, stainless steel cylinder 9 vertically is installed on heater, the cavity that poplar weightening finish sawn timber is vertically placed is along its length arranged in stainless steel cylinder 9, be provided with the fixture for fixing poplar weightening finish sawn timber in cavity, this fixture comprises retainer ring 11 and lower retainer ring 15, is used for the fixedly two ends up and down of poplar weightening finish sawn timber.
The barrel of stainless steel cylinder 9 is provided with reserves temperature-measuring port 12, and the top of stainless steel cylinder 9 is provided with upper cover 10, upper cover 10 on the top of stainless steel cylinder 9 by opening or closed mode regulates and controls the temperature difference up and down in stainless steel cylinder 9.Stainless steel cylinder 9 is comprised of stainless steel inner container, heat-insulation layer 13 and stainless steel casing, is filled with asbestos in heat-insulation layer 13.The bottom of stainless steel cylinder 9 is connected with humidifier tube 16, when poplar weightening finish sawn timber gradual change heat treatment finishes and the temperature of the gradient color poplar weightening finish sawn timber bottom that obtains when being reduced to 90 ℃, introduce water vapour by humidifier tube 16 to the bottom of stainless steel cylinder 9, can carry out damping to gradient color poplar weightening finish sawn timber and process.The bottom of stainless steel cylinder 9 also is provided with two hand holes that are symmetric 14, is used for mobile this stainless steel cylinder 9.
Heater comprises heat-conducting oil heating casing 7, heat transfer oil electric heating case 2, heat conduction oil circulating pump 3, y-type filter 4 and oil water separator 5.Stainless steel cylinder 9 vertically is installed on heat-conducting oil heating casing 7, provides heat energy by heat-conducting oil heating casing 7.The both sides of heat-conducting oil heating casing 7 are connected with flowline 8 with oil inlet pipe 17 respectively.Oil inlet pipe 17, heat-conducting oil heating casing 7, flowline 8, oil water separator 5, y-type filter 4, heat conduction oil circulating pump 3 and heat transfer oil electric heating case 2 connect to form the oil circulation system successively, and conduction oil circulates in this oil circulation system.
Above-mentioned heat transfer oil electric heating case 2 is connected with electrical control cubicles 1, and in casing, the temperature of conduction oil is controlled (generally in 160 ℃～270 ℃ scopes) automatically by electrical control cubicles.The rotating speed of heat conduction oil circulating pump 3 is stepless speed regulation.Oil water separator 5 is connected with expansion tank 6, and expansion tank 6 communicates with atmosphere, is mainly used in preventing in heat-conducting oil heating or cooling procedure because the variation of expanding with heat and contract with cold damages oil piping system and equipment.
The specific works process of above-mentioned gradual change annealing device is as follows:
1. the poplar weightening finish sawn timber that length is slightly less than stainless steel cylinder 9 height vertically inserts in the cavity of stainless steel cylinder 9, and uses retainer ring 11 and lower retainer ring 15 is fixed; Slowly add diameter less than the cobblestone of 3.0mm until keep concordant with the top of poplar weightening finish sawn timber stainless steel cylinder 9 is interior, with the top of upper cover 10 sealing stainless steel cylinders 9; Thermocouple temperature sensor is reserved temperature-measuring port 12 by 6 to be inserted in stainless steel cylinder 9.
2. open the electric heater on heat transfer oil electric heating case 2, conduction oil is heated, by electrical control cubicles 1, the temperature of conduction oil is controlled at 250 ℃, open stepless speed regulation heat conduction oil circulating pump 3, high temperature heat conductive oil is flowed in the oil circulation system, heat-conducting oil heating casing 7 provides heat energy by heat conducting mode to cobblestone and poplar weightening finish sawn timber in stainless steel cylinder 9, with increase weight sawn timber bottom-heated to 220 ℃ of poplar, and reduces gradually along poplar weightening finish length direction temperature.In this gradual change heat treatment process, due to the bottom of stainless steel cylinder 9 near thermal source---heat-conducting oil heating casing 7, its temperature is higher, the top stow away from heat of stainless steel cylinder 9, its temperature is lower, therefore, can form the temperature field that temperature of lower is high, upper temp is low in poplar weightening finish sawn timber, realize the gradual change heat treatment of poplar weightening finish sawn timber.Reserve temperature-measuring ports 12 by 6 on stainless steel cylinder 9 barrels and can carry out complete monitoring to the poplar sawn timber temperature along its length that increases weight, thereby in time regulate the temperature difference up and down of poplar weightening finish sawn timber, the poplar sawn timber that increases weight is processed into needed gradual change color.In the oil circulation system, conduction oil enters heat-conducting oil heating casing 7 by heat transfer oil electric heating case 2 through oil inlet pipe 17 and conducts heat, conduction oil after heat transfer enters oil water separator 5 by flowline 8 separates the moisture in oil circuit, then enter y-type filter 4 with the contaminant filter that produces in oil circuit, conduction oil enters heat transfer oil electric heating case 2 through heat conduction oil circulating pump 3 again, begin next cyclic process, until gradual change heat treatment is completed, close at last electric heater and heat conduction oil circulating pump 3 on heat transfer oil electric heating case 2.
The gradient color poplar weightening finish sawn timber that adopts above-mentioned gradual change annealing device to process to obtain presents from deep to shallow gradual change color along its length direction (from bottom to top), has built a kind of brand-new decorative effect.
Embodiment 2:
A kind of gradient color poplar of the present invention weightening finish sawn timber, this gradient color poplar weightening finish sawn timber has from deep to shallow gradual change color along its length direction, and the density of this gradient color poplar weightening finish sawn timber is 0.72g/cm
3
A kind of manufacture method of gradient color poplar weightening finish sawn timber of the present invention comprises the following steps:
(1) primary drying: adopting the air drying method poplar moist wood that moisture content is higher (specification: length is 1.9m, and wide is 15cm, and thickness is 25mm) to be dried to moisture content is 28%, gets the poplar sawn timber.
(2) Microwave Pretreatment: the poplar sawn timber after primary drying is placed on the crawler belt of tunnel type high-intensity microwave pre-processing device that rated power is 40kW, it is delivered in microwave cavity, open microwave generator, poplar sawn timber internal temperature is rapidly heated to 135 ℃, and kept 12 seconds.
(3) impregnate processing: at first prepare solids content and be 50% phenolic resin aqueous solution, then the material car of the poplar sawn timber after Microwave Pretreatment being packed into, the material car is pushed in the HIGH PRESSURE TREATMENT tank, close HIGH PRESSURE TREATMENT tank closing door, open vavuum pump and carry out the initial vacuum processing, vacuum degree control is at 0.07MPa, and keep letting out vacuum after 25min, pump into phenolic resin aqueous solution in the HIGH PRESSURE TREATMENT tank, and with the boost in pressure of phenolic resin aqueous solution in the HIGH PRESSURE TREATMENT tank to 0.55MPa, pressure after maintenance 50min in venting HIGH PRESSURE TREATMENT tank, open closing door, the poplar weightening finish sawn timber that will impregnate after processing is hauled out process tank, and standing 6 hours.
(4) redrying: will impregnate poplar weightening finish sawn timber after processing and pack into and carry out drying processing in the conventional drying kiln, the temperature of kiln inner drying medium-humid air is controlled at 55 ℃, be dried to moisture content be 7%.
(5) gradual change heat treatment: the weightening finish of the poplar after redrying sawn timber is positioned over one is equipped with in the gradual change annealing device of conduction oil, the heat treated temperature of gradual change is controlled at 200 ℃, the heat treated time of gradual change is controlled at 60min, after gradual change heat treatment is completed, obtains gradient color poplar weightening finish sawn timber.
Gradient color poplar weightening finish sawn timber obtained above is carried out post-processed, its process is: carry out the weightening finish of the gradient color poplar after gradual change heat treatment sawn timber cooling, when the temperature bottom gradient color poplar weightening finish sawn timber is reduced to 80 ℃, it is carried out damping processes, after handling, gradient color poplar weightening finish sawn timber is taken out from the gradual change annealing device, be placed in indoor close storing up and put, the resting period is controlled at 16 days.
The gradual change annealing device that uses in the manufacture method of the gradient color poplar weightening finish sawn timber of the present embodiment as shown in Figure 1, the effect of the parts that this device comprises, the annexation between parts, each parts and the operation principle of this device are identical with embodiment 1, the course of work of this device is substantially the same manner as Example 1, and its difference is: in the present embodiment, the gradual change heat treatment temperature is controlled to be 200 ℃.
Adopt that the gradient color poplar weightening finish sawn timber of above embodiment gained has that density is higher, dimensional stability and weather-proof excellent in te pins of durability, present the advantages such as from deep to shallow gradual change color, environmental protection along the length direction, can be widely used in the fields such as Furniture manufacture, indoor and outdoor decoration, greatly improve the added value of poplar goods.
The above is only the preferred embodiment of the present invention, and protection scope of the present invention also not only is confined to above-described embodiment.All technical schemes that belongs under thinking of the present invention all belong to protection scope of the present invention.Be noted that for those skilled in the art, the improvements and modifications under the prerequisite that does not break away from the principle of the invention, these improvements and modifications also should be considered as protection scope of the present invention.
Claims (10)
1. gradient color poplar weightening finish sawn timber, is characterized in that, described gradient color poplar weightening finish sawn timber has from deep to shallow gradual change color along its length direction, and the density of described gradient color poplar weightening finish sawn timber is 0.5g/cm
3～0.9g/cm
3
2. the manufacture method of gradient color poplar weightening finish sawn timber comprises the following steps:
(1) primary drying: it is 25%～40% that the poplar moist wood is dried to moisture content, gets the poplar sawn timber;
(2) Microwave Pretreatment: the poplar sawn timber after primary drying is carried out Microwave Pretreatment, and the temperature of Microwave Pretreatment is controlled at 120 ℃～160 ℃, and the time of Microwave Pretreatment is controlled at 5s～15s;
(3) impregnate processing: the poplar sawn timber after Microwave Pretreatment and adhesive are carried out the vacuum pressure impregnating processing, vacuum degree control is at 0.05MPa～0.08MPa, keep 10min～30min, impregnate pressure and be controlled at 0.30MPa～1.00MPa, the time of impregnating is controlled at 10min～60min, gets poplar weightening finish sawn timber;
(4) redrying: will impregnate poplar weightening finish sawn timber redrying after processing to moisture content less than 10%;
(5) gradual change heat treatment: the weightening finish of the poplar after redrying sawn timber is positioned in a gradual change annealing device carries out gradual change heat treatment, the heat treated temperature of gradual change is controlled at 140 ℃～250 ℃, the heat treated time of gradual change is controlled at 30min～240min, after gradual change heat treatment is completed, obtain gradient color poplar weightening finish sawn timber.
3. the manufacture method of gradient color poplar weightening finish sawn timber according to claim 2, is characterized in that, described in step (3), adhesive comprises water-soluble urea-formaldehyde resin adhesive or phenolic resin adhesive, and the solids content of described adhesive is 40%～60%.
4. the manufacture method of gradient color poplar according to claim 2 weightening finish sawn timber, it is characterized in that, gradual change annealing device described in step (5) comprises stainless steel cylinder (9) and is located at the heater of stainless steel cylinder (9) bottom, described stainless steel cylinder (9) vertically is installed on described heater, one cavity that poplar weightening finish sawn timber is vertically placed is along its length arranged in described stainless steel cylinder (9), be provided with the fixture for fixing poplar weightening finish sawn timber in described cavity, described heater comprises heat-conducting oil heating casing (7), heat transfer oil electric heating case (2), heat conduction oil circulating pump (3), y-type filter (4) and oil water separator (5), the both sides of described heat-conducting oil heating casing (7) are connected with a flowline (8) with an oil inlet pipe (17) respectively, described oil inlet pipe (17), heat-conducting oil heating casing (7), flowline (8), oil water separator (5), y-type filter (4), heat conduction oil circulating pump (3) and heat transfer oil electric heating case (2) connect to form an oil circulation system successively, in described gradual change annealing device, conduction oil is housed, the temperature of described conduction oil is controlled at 160 ℃～270 ℃.
5. the manufacture method of gradient color poplar according to claim 4 weightening finish sawn timber, it is characterized in that, the barrel of described stainless steel cylinder (9) is provided with the reservation temperature-measuring port (12) for monitoring poplar weightening finish sawn timber or heating medium temp, the top of described stainless steel cylinder (9) is provided with the upper cover (10) for up and down temperature difference in regulation and control stainless steel cylinders (9), the bottom of described stainless steel cylinder (9) is connected with a humidifier tube (16), and described fixture comprises retainer ring (11) and lower retainer ring (15).
6. the manufacture method of gradient color poplar according to claim 2 weightening finish sawn timber, it is characterized in that, described step (5) gained gradient color poplar weightening finish sawn timber is carried out post-processed, the process of described post-processed is: carry out gradient color poplar weightening finish sawn timber cooling, when the temperature bottom gradient color poplar weightening finish sawn timber is reduced to below 100 ℃, gradient color poplar weightening finish sawn timber is carried out damping to be processed, after damping is finished dealing with, gradient color poplar weightening finish sawn timber is taken out from the gradual change annealing device, be placed in indoor close storing up and put.
7. gradual change annealing device that can be used for making gradient color timber, it is characterized in that, described device comprises stainless steel cylinder (9) and is located at the heater of stainless steel cylinder (9) bottom, described stainless steel cylinder (9) vertically is installed on described heater, one cavity that timber is vertically placed is along its length arranged in described stainless steel cylinder (9), be provided with in described cavity for the fixing fixture of timber.
8. gradual change annealing device according to claim 7, it is characterized in that, the barrel of described stainless steel cylinder (9) is provided with the reservation temperature-measuring port (12) for monitoring timber or heating medium temp, the top of described stainless steel cylinder (9) is provided with the upper cover (10) for up and down temperature difference in regulation and control stainless steel cylinders (9), the bottom of described stainless steel cylinder (9) is connected with a humidifier tube (16), and described fixture comprises retainer ring (11) and lower retainer ring (15).
9. according to claim 7 or 8 described gradual change annealing devices, it is characterized in that, described heater comprises heat-conducting oil heating casing (7), heat transfer oil electric heating case (2), heat conduction oil circulating pump (3), y-type filter (4) and oil water separator (5), described stainless steel cylinder (9) vertically is installed on described heat-conducting oil heating casing (7), the both sides of described heat-conducting oil heating casing (7) are connected with a flowline (8) with an oil inlet pipe (17) respectively, described oil inlet pipe (17), heat-conducting oil heating casing (7), flowline (8), oil water separator (5), y-type filter (4), heat conduction oil circulating pump (3) and heat transfer oil electric heating case (2) connect to form an oil circulation system successively.
10. gradual change annealing device according to claim 9, it is characterized in that, the electrical control cubicles (1) that described heat transfer oil electric heating case (2) and is used for regulation and control heat-conducting oil heating temperature is connected, the rotating speed of described heat conduction oil circulating pump (3) is stepless speed regulation, described oil water separator (5) is connected with an expansion tank (6), and described expansion tank (6) communicates with atmosphere.
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107042557A (en) * | 2017-06-09 | 2017-08-15 | 合肥集知网信息技术有限公司 | A kind of Chipboard special efficient rate conditioning device |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101020322A (en) * | 2007-02-26 | 2007-08-22 | 冯中清 | Process of producing color laminated board |
| CN101264616A (en) * | 2008-04-25 | 2008-09-17 | 赵斌 | Method for manufacturing colorful bamboo wood board |
| CN201124507Y (en) * | 2007-11-23 | 2008-10-01 | 中国林业科学研究院木材工业研究所 | Wood heat-treating facility |
| CN101508123A (en) * | 2009-03-12 | 2009-08-19 | 王殿国 | Color solid plate manufacture method |
| CN102059907A (en) * | 2010-10-08 | 2011-05-18 | 北京林业大学 | Multi-level wood laminated veneer art relief and manufacturing method thereof |
| CN102161391A (en) * | 2011-03-08 | 2011-08-24 | 罗代友 | Container with convex bottom |
| CN202053335U (en) * | 2011-02-28 | 2011-11-30 | 覃健林 | High-efficiency carbonization furnace |
| CN102825645A (en) * | 2012-09-24 | 2012-12-19 | 中南林业科技大学 | Poplar sawn timber and manufacturing method thereof |
| CN203125644U (en) * | 2013-03-04 | 2013-08-14 | 中南林业科技大学 | Gradient heat treatment device of microwave pretreatment material |
-
2013
- 2013-03-04 CN CN201310067511.0A patent/CN103128818B/en not_active Expired - Fee Related
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101020322A (en) * | 2007-02-26 | 2007-08-22 | 冯中清 | Process of producing color laminated board |
| CN201124507Y (en) * | 2007-11-23 | 2008-10-01 | 中国林业科学研究院木材工业研究所 | Wood heat-treating facility |
| CN101264616A (en) * | 2008-04-25 | 2008-09-17 | 赵斌 | Method for manufacturing colorful bamboo wood board |
| CN101508123A (en) * | 2009-03-12 | 2009-08-19 | 王殿国 | Color solid plate manufacture method |
| CN102059907A (en) * | 2010-10-08 | 2011-05-18 | 北京林业大学 | Multi-level wood laminated veneer art relief and manufacturing method thereof |
| CN202053335U (en) * | 2011-02-28 | 2011-11-30 | 覃健林 | High-efficiency carbonization furnace |
| CN102161391A (en) * | 2011-03-08 | 2011-08-24 | 罗代友 | Container with convex bottom |
| CN102825645A (en) * | 2012-09-24 | 2012-12-19 | 中南林业科技大学 | Poplar sawn timber and manufacturing method thereof |
| CN203125644U (en) * | 2013-03-04 | 2013-08-14 | 中南林业科技大学 | Gradient heat treatment device of microwave pretreatment material |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107042557A (en) * | 2017-06-09 | 2017-08-15 | 合肥集知网信息技术有限公司 | A kind of Chipboard special efficient rate conditioning device |
| CN107042557B (en) * | 2017-06-09 | 2018-07-06 | 丰林亚创（惠州）人造板有限公司 | A kind of Chipboard special efficient rate conditioning device |
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