CN101396870B - Cone phenolic resin composites structural parts whole-blank precast-products lapping forming technique - Google Patents
Cone phenolic resin composites structural parts whole-blank precast-products lapping forming technique Download PDFInfo
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- CN101396870B CN101396870B CN2008102268334A CN200810226833A CN101396870B CN 101396870 B CN101396870 B CN 101396870B CN 2008102268334 A CN2008102268334 A CN 2008102268334A CN 200810226833 A CN200810226833 A CN 200810226833A CN 101396870 B CN101396870 B CN 101396870B
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Abstract
The invention relates to a related joint forming process of a conical metlbond composite material structure and an overall blank preformed unit. The shape of the conical metlbond composite material structure is unfolded and differentiated, and the related joint width of the preformed unit is taken as the basis of the size, thus a tablet prepressing mold can be designed and manufactured; the charge amount of each preformed unit is calculated; metlbond premix compound is horizontally and evenly added in the preheated prepressing mold, a hydraulic press pressurizes on the preformed unit, demoulding is carried out after holding the temperature for 10-30 minutes; the preformed unit after demoulding is immediately bent into an arc preformed unit by a conical explorator; cooling is carried out for 15-30 minutes; the preformed unit is put in the preheated overall forming mold for related joint, the overall blank is obtained by sealing the preformed unit by a gum cover and pumping to be in vacuum. By adopting the process, one third of the metlbond premix compound can be saved in production, the production cost is greatly reduced; the original processing period of 4 days is reduced to 2.5 days, thus improving the production efficiency; the loading difficulty and labor intensity are lowered, the controllability of the process is improved, the thickness of the product is even and complete, and the stability of the product quality is greatly improved.
Description
Technical field
The present invention relates to a kind of precast-products lapping forming technique of cone phenolic resin composites structural parts whole-blank, belong to the composite manufacture field.
Background technology
Along with the development of phenolic composite technology, the complex profile structural member of global formation has become the trend of product design, and the structural member of global formation not only can improve the globality and the reliability of product, and has simplified production process, has improved production efficiency.
Use equal pressing forming technology global formation cone phenolic resin composites structural parts adopts vertically charging in former when integral workblank is made now, after the hand punning, vacuumizes the pre-stamped integral workblank that gets with the gum cover sealing.Because gum cover shrinks the inhomogeneous of irregular and manual charging, the feasible integral workblank air spots of making like this, thickness is extremely inhomogeneous, product not only has the risk that lacks material, and the partial operation surplus is big, has caused raw-material waste, has also reduced production efficiency.
Summary of the invention
Technology of the present invention is dealt with problems and is: overcome the deficiencies in the prior art, a kind of globality that can guarantee blank is provided, and product thickness is even, reduces labour intensity, material saving, the precast-products lapping forming technique of the cone phenolic resin composites structural parts whole-blank of enhancing productivity.
Technical solution of the present invention is: the cone phenolic resin composites structural parts whole-blank precast-products lapping moulding process is characterized in that realizing through the following steps:
(1) outer mold surface of cone phenolic resin composites structural parts is launched and according to the size distinguish of integral workblank, every lobe adds that the lap width of prefabricated component is the size foundation, manufactures and designs dull and stereotyped pre-pressing mold;
(2) thickness and the allowance of pressing product calculates the every phenolic aldehyde premix that prefabricated component is used;
(3) pre-pressing mold of flat board and global formation mould are preheated to 50～70 ℃ simultaneously;
(4) the level phenolic aldehyde premix of evenly packing in the pre-pressing mold of flat board;
(5) adopt hydraulic press to the pre-pressing mold pressurization of flat board 1～2Mpa, the demoulding behind pressurize, the insulation 10～30min;
(6) prefabricated component after the demoulding is bent to the arc prefabricated component immediately on the taper pattern, cooling 15～30min;
(7) cooled prefabricated component being put into the global formation mould overlaps;
(8) with gum cover sealing global formation mould, vacuumize and make integral workblank.
With the cone phenolic resin composites structural parts distinguish, the integral workblank outside diameter is divided into 4 lobes greater than 1 meter to described step (1) according to the size of integral workblank, and the integral workblank outside diameter is divided into 2 lobes less than 1 meter.
Described lap width is 200～250mm.
Described allowance is not more than 10mm.
The used phenolic aldehyde premix of described every block of prefabricated component is s* (d+l) * g, and wherein s is that dull and stereotyped pre-die pressing surface is long-pending, and d is a product thickness, and l is an allowance, and g is a phenolic aldehyde premix density.
Described size according to integral workblank can be inhomogeneous distinguish with the cone phenolic resin composites structural parts distinguish.
The present invention compared with prior art beneficial effect is:
(1) this process is earlier produced prefabricated component with dull and stereotyped pre-pressing mold, and vertical in the past charging was converted into the plane charging, and with the hydraulic press precompressed of pressurizeing, charging difficulty and labour intensity have been reduced, improved the controllability of technology, made product thickness even, complete, the stability of product quality significantly improves;
(2) use this process can save 1/3 phenolic aldehyde premix in the production practices, greatly reduce production cost;
(3) use this process to make original 4 days process-cycle drop to 2.5 days, improved production efficiency.
Description of drawings
Fig. 1 is a flow chart of the present invention
The specific embodiment
Embodiment 1:
Work flow as shown in Figure 1.
Certain product outside diameter 900mm, small end 700mm, high 1200mm, thickness 10mm, allowance 10mm, product density 1.65g/cm
3Lap width 200mm, integral workblank is divided into 2 lobes, the dull and stereotyped pre-pressing mold of design on this basis, the cavity dimension of dull and stereotyped pre-pressing mold is big end 1620mm, small end 1300mm, wide 1200mm, dark 150mm, according to prefabricated component charge computing formula s* (d+l) * g, calculate of the phenolic aldehyde premix of every block of prefabricated component with 58kg; The pre-pressing mold of flat board is installed on the hydraulic press, and dull and stereotyped pre-pressing mold and global formation former are preheated to 60 ℃ simultaneously; In the pre-pressing mold of flat board, evenly pack into the phenolic aldehyde premix of 58kg, the hydraulic press matched moulds, pressurization 1MPa, insulation 15min, prefabricated component is taken out in die sinking, and the manual application of force bends to the arc prefabricated component with dull and stereotyped prefabricated component on the taper pattern, cools off 15min naturally; Make another piece prefabricated component with same processes; Two blocks of prefabricated components are put into the former that combines to overlap; With the gum cover sealing, vacuumize pressurization and make the uniform integral workblank of thickness.
Embodiment 2:
Certain product outside diameter 1200mm, small end 1000mm, high 1600mm, thickness 12mm, allowance 10mm, product density 1.65g/cm
3Lap width 200mm, integral workblank is divided into 4 lobes, the dull and stereotyped pre-pressing mold of design on this basis, the cavity dimension of dull and stereotyped pre-pressing mold is big end 1140mm, small end 1000mm, wide 1600mm, dark 150mm, according to prefabricated component charge computing formula s* (d+l) * g, calculate of the phenolic aldehyde premix of every block of prefabricated component with 62kg; The pre-pressing mold of flat board is installed on the hydraulic press, and dull and stereotyped pre-pressing mold and global formation former are preheated to 70 ℃ simultaneously; In the pre-pressing mold of flat board, evenly pack into the phenolic aldehyde premix of 62kg, the hydraulic press matched moulds, pressurization 2MPa, insulation 20min, prefabricated component is taken out in die sinking, and the manual application of force bends to the arc prefabricated component with dull and stereotyped prefabricated component on the taper pattern, cools off 20min naturally; Make three blocks of prefabricated components in addition with same processes; Four blocks of prefabricated components are put into the former that combines to overlap; With the gum cover sealing, vacuumize pressurization and make the uniform integral workblank of thickness.
Embodiment 3:
Certain product outside diameter 600mm, small end 500mm, high 600mm, thickness 10mm, allowance 10mm, product density 1.65g/cm
3Lap width 200mm, can be with irregular 2 lobes that are divided into of integral workblank, design two pre-pressing molds of flat board on this basis, first dull and stereotyped precompressed model cavity is of a size of big end 1100mm, small end 943mm, wide 600mm, dark 150mm, second dull and stereotyped precompressed model cavity is of a size of big end 1185mm, small end 1028mm, wide 600mm, dark 150mm, according to prefabricated component charge computing formula s* (d+l) * g, calculate of the phenolic aldehyde premix of first block of prefabricated component, the phenolic aldehyde premix of 22kg of second block of prefabricated component with 20kg; First pre-pressing mold of flat board is installed on the hydraulic press, and dull and stereotyped pre-pressing mold and global formation former are preheated to 50 ℃ simultaneously; The 20kg phenolic aldehyde premix of in first pre-pressing mold of flat board, evenly packing into, the hydraulic press matched moulds, pressurization 1.5MPa, insulation 15min, prefabricated component is taken out in die sinking, and the manual application of force bends to the arc prefabricated component with dull and stereotyped prefabricated component on the taper pattern, cools off 15min naturally; Second pre-pressing mold of flat board is installed on the hydraulic press, and dull and stereotyped pre-pressing mold and global formation former are preheated to 50 ℃ simultaneously; The 22kg phenolic aldehyde premix of in second pre-pressing mold of flat board, evenly packing into, the hydraulic press matched moulds, pressurization 1.5MPa, insulation 15min, prefabricated component is taken out in die sinking, and the manual application of force bends to the arc prefabricated component with dull and stereotyped prefabricated component on the taper pattern, cools off 15min naturally; Two blocks of prefabricated components are put into the former that combines to overlap; With the gum cover sealing, vacuumize pressurization and make the uniform integral workblank of thickness.
The unspecified part of the present invention belongs to general knowledge as well known to those skilled in the art.
Claims (6)
1. cone phenolic resin composites structural parts whole-blank precast-products lapping moulding process is characterized in that realizing through the following steps:
(1) outer mold surface of cone phenolic resin composites structural parts is launched and according to the size distinguish of integral workblank, every lobe adds that the lap width of prefabricated component is the size foundation, manufactures and designs dull and stereotyped pre-pressing mold;
(2) thickness and the allowance of pressing product calculates the every phenolic aldehyde premix that prefabricated component is used;
(3) pre-pressing mold of flat board and global formation mould are preheated to 50～70 ℃ simultaneously;
(4) the level phenolic aldehyde premix of evenly packing in the pre-pressing mold of flat board;
(5) adopt hydraulic press to the pre-pressing mold pressurization of flat board 1～2Mpa, the demoulding behind pressurize, the insulation 10～30min;
(6) prefabricated component after the demoulding is bent to the arc prefabricated component immediately on the taper pattern, cooling 15～30min;
(7) cooled prefabricated component being put into the global formation mould overlaps;
(8) with gum cover sealing global formation mould, vacuumize pressurization and make integral workblank.
2. cone phenolic resin composites structural parts whole-blank precast-products lapping moulding process according to claim 1, it is characterized in that: described step (1) according to the size of integral workblank with the cone phenolic resin composites structural parts distinguish, the integral workblank outside diameter is greater than 1 meter, be divided into 4 lobes, the integral workblank outside diameter is divided into 2 lobes less than 1 meter.
3. cone phenolic resin composites structural parts whole-blank precast-products lapping moulding process according to claim 1 is characterized in that: described lap width is 200～250mm.
4. cone phenolic resin composites structural parts whole-blank precast-products lapping moulding process according to claim 1 is characterized in that: described allowance is not more than 10mm.
5. cone phenolic resin composites structural parts whole-blank precast-products lapping moulding process according to claim 1, it is characterized in that: the used phenolic aldehyde premix of described every block of prefabricated component is s* (d+l) * g, wherein s is that dull and stereotyped pre-die pressing surface is long-pending, d is a product thickness, l is an allowance, and g is a phenolic aldehyde premix density.
6. cone phenolic resin composites structural parts whole-blank precast-products lapping moulding process according to claim 1 is characterized in that: described size according to integral workblank can be inhomogeneous distinguish with the cone phenolic resin composites structural parts distinguish.
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| CN2008102268334A CN101396870B (en) | 2008-11-18 | 2008-11-18 | Cone phenolic resin composites structural parts whole-blank precast-products lapping forming technique |
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| CN101396870B true CN101396870B (en) | 2010-06-09 |
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| CN103843006B (en) | 2011-09-30 | 2017-05-10 | 国际商业机器公司 | Method and equipment for provisioning of operating systems to user terminals |
| CN102626990A (en) * | 2012-04-24 | 2012-08-08 | 江苏新氟隆塑胶有限公司 | PTFE (Polytetrafluoroethylene) packing stretch forming equipment system and production process |
| CN102909811B (en) * | 2012-10-25 | 2016-03-23 | 国家电网公司 | The forming method of the high-temperature-resistant phenolic plastic insulation part in a kind of electric connector |
| CN106313575B (en) * | 2015-06-26 | 2018-10-23 | 杨大卫 | Production system and manufacturing process |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1843748A (en) * | 2005-04-08 | 2006-10-11 | 沈阳气体压缩机股份有限公司 | Method for processing crescent petal lap jointing type piston ring |
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Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1843748A (en) * | 2005-04-08 | 2006-10-11 | 沈阳气体压缩机股份有限公司 | Method for processing crescent petal lap jointing type piston ring |
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