CN102085726B - Die and method for producing large-diameter glass fiber reinforced plastic cylinder - Google Patents
Die and method for producing large-diameter glass fiber reinforced plastic cylinder Download PDFInfo
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- CN102085726B CN102085726B CN 200910249925 CN200910249925A CN102085726B CN 102085726 B CN102085726 B CN 102085726B CN 200910249925 CN200910249925 CN 200910249925 CN 200910249925 A CN200910249925 A CN 200910249925A CN 102085726 B CN102085726 B CN 102085726B
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Abstract
A die for producing large-diameter glass fiber reinforced plastic cylinders comprises a section of arc plate; an end plate is connected to the two axial ends of the arc plate; a central shaft protruding outside is connected to the center of the end plate; and an inner flange plate facing the radial direction is connected to the two sides of the arc plate. A backplate connected to the end plate and the inner flange plate is disposed at the inner side of the arc plate, and a support frame is disposed between the inner side of the arc plate and the backplate. The method for producing large-diameter glass fiber reinforced plastic cylinders comprises the following steps: (1) coating demoulding wax on the external surfaces of the arc plate and the inner flange plate of the die, enwrapping a polyester film, and preparing an inner liner; continuously rotating the die, winding the whole body along the external surface by fiber reinforced materials, and leaching along the axial direction by resin composite materials; (2) performing solidification; (3) demoulding; (4) finishing; (5) completing the production. The method solves the technical problems of inconvenient transportation, inconvenient field winding, and installation difficulty of the whole body of a large-diameter glass fiber reinforced plastic cylinder.
Description
Technical field
The present invention relates to LARGE DIAMETER FRP cylinder or chimney technical field, belong to a kind of mould and method of production LARGE DIAMETER FRP cylinder.
Background technology
The enforcement of the U.S. and western countries' environmental protection policy particularly to the flue gas desulfurization of smoke stack emission, is namely adopted desulphurization plant and technology to remove sulfur in smoke and is started from the eighties of last century end of the seventies and the beginning of the eighties.China uses and technological transformation since 2005 technology of carrying out chimney in service and newly-built chimney are carried out desulfurization in China, to reduce the discharge capacity of Chinese sulfur dioxide under the encouragement of national environmental protection policy and requiring.
What most desulfurization was adopted is wet desulphurization, after both flue gas has come out from boiler, through desulfurizing tower and inner alkaline aqueous solution spray, enters flue and chimney again and carries out airborne release.But, still have about 5% sulfur dioxide to be included in the middle of the discharged flue gas.Because the temperature of flue gas is about 50 degrees centigrade, mix to have formed dilute sulfuric acid with the oxygen G﹠W.Dilute sulfuric acid causes sour corrosion to concrete and steel flue gas duct and chimney.Corrosion can cause concrete and steel stack local damage and large tracts of land damage to occur for a long time, even caves in.
High temperature dry flue gas (130-150 degree centigrade) in the chimney during the not desulfurization of industrial and mineral of flue gas, the ultra-high temperature flue gas (180 degrees centigrade) of the short time when the low temperature wet flue gas (about 50 degrees centigrade) during the desulfurizing tower operation and generating set starting up.
In the large-scale popularization desulfur technology; very serious problem is but appearring aspect the structural defence of chimney: be exactly no matter adopt any external; domestic anti-corrosion material; even almost the chimney more than 90% has used anti-corrosion material or technology; in addition less than the time in 1 year in all produce to leak; the result is penetrated on the concrete and steel of matrix, the structure of grievous injury chimney and safety.Only can reach more than hundreds of hundred million RMB in the economic loss that causes in China.
The chimney corrosion-proof lining of present desulfurization (FGD) divides several big classes basically: the coating class, the clay class is built glass block and foamed bricks by laying bricks or stones, paster class, alloy-steel plate and titanium plate class, and fiberglass.
The coating class is easy to crack, comes off, and thickness is limited; Clay class impermeabilisation type is poor, and the cracking that comes off is more.Glass block and foamed bricks engineering time are long, and several ten thousand seams are in case several damages cause integral body to build the damage in slit by laying bricks or stones easily, and damage has related property; Also because bonding slit is too many, damage also has related property to the paster class; Titanium alloy sheet is expensive, and weld seam and plate face all are prone to damage, leaks more, also inevitable; The fiberglass chimney is good because of the temperature resistance anti-corrosive properties at present, and dependable performance is applied in gradually and increases.
The main cause of the failure of above chimney anticorrosion material is because anti-corrosion material contacts with the direct of acidproof brick liner with concrete, and when causing corrosion-proof lining to damage, acid accumulator penetration causes structural failure on acidproof brick and concrete chimney housing.
Damage for fear of chimney structure, the chimney internal cylinder in chimney housing or supporting construction arises at the historic moment, and inner core is divided into steel inner cylinder, acidproof brick/concrete inner core and fiberglass inner core.Because steel and concrete inner core be sensitive for damages still, fiberglass inner core operational effect is better at present.
But, in the process of using fiberglass (also claiming FRP or composite) inner core, the fiberglass inner core of big caliber, diameter is greater than 3.5 meters or 4 meters the time, must near chimney, build interim vertical wrapping machine and carry out the manufacturing of fiberglass inner core, to avoid being transported to by factory process the high expense at chimney scene, maybe can not transportation property.
Even but big caliber inner core carries out the vertical winding production of glass reinforced plastic pipe at the scene, in the time of at diameter to 3.5 meter or more than 4 meters, even the 5-10 rice diameter, on-the-spot twine to produce also great difficulty can appear, influenced by weather, temperature, wind-force etc.; During installation, also need the perforate of existing chimney flue large tracts of land, the glass reinforced plastic pipe of integral body is transported in the chimney.Simultaneously, glass reinforced plastic pipe in the chimney is lifted, also very high to the requirement of crane gear.
Above problem has still limited the extensive use of big caliber fiberglass inner core greatly.Major limitation is the processed complex of big caliber fiberglass inner core, the transportation difficulty, and the construction complexity, thus cause cost to strengthen, be difficult to be accepted by the industrial user.
Summary of the invention
The mould and the method that the purpose of this invention is to provide a kind of production LARGE DIAMETER FRP cylinder; it is convenient to processing and fabricating in factory; form large-scale production; also convenient transportation and installation solved the whole chimney transportation of LARGE DIAMETER FRP inconvenience, on-the-spot coiling inconvenience, the difficult technologies problem has been installed.
For achieving the above object, the present invention takes following technical scheme:
A kind of mould of production LARGE DIAMETER FRP cylinder, it has one section circular arc panel, axial two ends at this circular arc panel are connected with end plate, be connected with outwardly directed central shaft at the middle part of this end plate, to radially being connected with the inner flange panel, the axial two ends of this inner flange panel are connected with described end plate in circular arc panel two sides.
Described circular arc panel inboard is provided with the backplate that is connected with the inner flange panel with end plate, is provided with bracing frame between circular arc panel inboard and backplate.
A kind of method of production LARGE DIAMETER FRP cylinder, it may further comprise the steps:
(1), is coated with demoulding wax at the circular arc panel of mould and the outer surface of inner flange panel, bag polyester film, making liner; Rotated continuously by central shaft rotating band moving mold, fibre reinforced materials carries out whole winding along the circular arc panel of mould and the outer surface of inner flange panel, divides glass fiber to intersect and twines and the winding of glass wool cloth hoop; After the entire die glass wool cloth twined comprehensively, mould stopped the rotation; Resin composite materials carries out sprinkling vertically; Low-angle rotary die again, resin composite materials carries out sprinkling vertically; The sprinkling head carries out reciprocating; And when sprinkling, mould is actionless; After the one way sprinkling, mould low-angle rotation again; In this sprinkling process, the baffle plate that compresses that arranges on the inner flange panel face is in impaction state, to prevent the trickling of resinousness material, finishes at the circular arc panel of mould and the outer surface of inner flange panel until the sprinkling of one deck; Open and compress baffle plate, mould enters continuous rotation status, twines other one deck glass fiber or cloth at mould; Repeatedly repeat said process, meet the requirements of thickness until composite;
(2), solidify: mould rotates at a slow speed, keeps the uniform thickness that is wrapped in the glass fibre reinforced plastic cylinder on the mould before solidifying, and solidifies until the glass fibre reinforced plastic cylinder form;
(3), the demoulding: adopt ingot stripper, the radially demoulding that is wrapped in the glass fibre reinforced plastic cylinder of the integral body on the mould is got off;
(4), finishing: glass fibre reinforced plastic cylinder after the demoulding is trimmed to the length of requirement, the fineness on surface, inner flange require width; Prune away on the mould backplate not by moistening glass fiber or cloth, made a cylindrical shell arc sheet of cylinder;
(5), finish: bore fixedly connected hole at the both sides of cylindrical shell arc sheet inner flange face, be polished into rough surface at the inner flange lateral surface, in order to adopt chemical seccotine bonding, the connecting hole that is inserted on the inner flange be connected by bolt by several cylindrical shell arc sheets in factory is connected to a cylinder, carries out pre-butt joint and the adjustment of segmentation of the circumference of whole cylinder; Finally be used for being assembled into the fiberglass cylinder of circumferential shapes by the cylindrical shell arc sheet of fiberglass.
The invention has the beneficial effects as follows: with LARGE DIAMETER FRP cylinder processing and fabricating in factory, form large-scale production, also convenient transportation and installation solved LARGE DIAMETER FRP integral barrel transportation inconvenience, on-the-spot coiling inconvenience, the difficult technologies problem has been installed; Also make the reduction significantly of production cost, promoted industrial quarters to adopt the use of the most effective fiberglass chimney anticorrosion technology, solved a large amount of industrial chimney problem demanding prompt solutions; Promoted simultaneously the development of environmental protection cause effectively.
Description of drawings
Fig. 1 is mould structure schematic diagram of the present invention;
Fig. 2 is of the present invention 1/4 along circumferential sectors mould schematic diagram;
Fig. 3 is Mold Making cylindrical shell arc sheet schematic diagram of the present invention;
Fig. 4 is schematic diagram before the Mold Making cylindrical shell arc sheet of the present invention demoulding;
Fig. 5 is schematic diagram after the Mold Making cylindrical shell arc sheet of the present invention demoulding;
Fig. 6 is the schematic diagram that the cylindrical shell arc sheet of Mold Making of the present invention is assembled into cylinder;
Fig. 7 connects the schematic diagram of making chimney internal cylinder by cylinder;
The specific embodiment
Referring to Fig. 1, shown in Figure 2: a kind of mould of production LARGE DIAMETER FRP cylinder, make with Metal Material Welding, it has one section circular arc panel 1, axial two ends at this circular arc panel 1 are connected with end plate 3, be connected with outwardly directed central shaft 5 at the middle part of this end plate 3, to radially being connected with inner flange panel 2, the axial two ends of this inner flange panel 2 are connected with described end plate 3 in circular arc panel 3 two sides.
Described circular arc panel 1 inboard is provided with the backplate 4 that is connected with inner flange panel 2 with end plate 3, is provided with bracing frame 6 between circular arc panel inboard and backplate.
Fig. 1, Fig. 2 die drawing are that cylinder divides 4 sections along circumference,
The present invention has solved the problem of the large-scale production in factory of LARGE DIAMETER FRP cylinder (chimney internal cylinder or tank body) fully, rather than carries out the vertical winding of LARGE DIAMETER FRP cylinder at the scene.
Fig. 1, Fig. 2 are the moulds (can also divide 3 sections, divide 5 sections, divide 6 sections, even most ten minutes section) of quarter turn of the present invention: the characteristics of this mould are the inner surface diameter that the diameter of its periphery equals fiberglass 1/4.Two ends along the plane of radius in fact inwardly translation the thickness of fiberglass cylinder, to guarantee when another one 1/4 cylinder segmentation is combined, guaranteeing whole circumferential shapes.The width along edge grain of mould is Duoed 30 centimeters than the fiberglass inner flange length that requires.The back side of grinding tool is plane or outstanding arc surface, perhaps or even empty face, without any material do the back side.Mould inside has structural supporter, and the two ends of mould easily make things convenient for rotation and location at the weight center of section mounting center axle, and saves drive energy.The back side of mould is non-wet side, and the resinousness material does not reach the glass fiber material at this back side.
The maximum characteristics of production fiberglass subsection cylindrical of the present invention are when producing, and have also produced and the cylinder inner flange that is connected of one longitudinally.When producing at cylinder to the inside radius steering position, can increase one deck or which floor glass wool cloth by hand, with in strengthening to the internal intensity of flange and cylindrical shell.
According to the method for above-mentioned mould production LARGE DIAMETER FRP cylinder, it may further comprise the steps:
(1), is coated with demoulding wax at the circular arc panel of mould and the outer surface of inner flange panel, bag polyester film, making liner; Rotated continuously by central shaft rotating band moving mold, fibre reinforced materials carries out whole winding along the circular arc panel of mould and the outer surface of inner flange panel, divides glass fiber to intersect and twines and the winding of glass wool cloth hoop; After the entire die glass wool cloth twined comprehensively, mould stopped the rotation; Resin composite materials carries out sprinkling vertically; Low-angle rotary die again, resin composite materials carries out sprinkling vertically; Sprinkling 7 is carried out reciprocating; And when sprinkling, mould is actionless; After the one way sprinkling, mould low-angle rotation again; In this sprinkling process, the baffle plate 8 that compresses that arranges on the inner flange panel face is in impaction state, to prevent the trickling of resinousness material, finishes at the circular arc panel of mould and the outer surface of inner flange panel until the sprinkling of one deck; Open and compress baffle plate 8, mould enters continuous rotation status, twines other one deck glass fiber or cloth at mould; Repeatedly repeat said process, meet the requirements of the thickness (see figure 3) until composite;
(2), solidify: mould rotates at a slow speed, keeps the uniform thickness that is wrapped in the glass fibre reinforced plastic cylinder on the mould before solidifying, and solidifies until the glass fibre reinforced plastic cylinder form;
(3), the demoulding: adopt ingot stripper, the radially demoulding that is wrapped in the glass fibre reinforced plastic cylinder of the integral body on the mould is got off;
(4), finishing: glass fibre reinforced plastic cylinder after the demoulding is trimmed to the length of requirement, the fineness on surface, inner flange require width; Prune away on the mould backplate not by moistening glass fiber 9 or cloth, made a cylindrical shell arc sheet 10 (seeing Fig. 4, Fig. 5) of cylinder;
(5), finish: bore fixedly connected hole 11 (see figure 5)s at the both sides of cylindrical shell arc sheet inner flange face 12, be polished into rough surface at the inner flange lateral surface, in order to adopt chemical seccotine bonding, the connecting hole that is inserted on the inner flange be connected by bolt by several cylindrical shell arc sheets in factory is connected to a cylinder, carries out pre-butt joint and the adjustment of segmentation of the circumference of whole cylinder; Finally be used for being assembled into the fiberglass cylinder (see figure 6) of circumferential shapes by the cylindrical shell arc sheet of fiberglass.
The present invention utilizes the horizontal continuous Wiring apparatus of existing similar GRP pipe class, change the computer-controlled program of the continuous winding of its cylinder or glass reinforced plastic pipe, with continuous winding glass wool cloth, and change its continual sprinkling process, during to the glass fiber of the thickness that is wound into one deck or needs or cloth, stop to twine.Allow sprinkling equipment longitudinally to move then and carry out sprinkling.Manual or electronic low-angle rotates mould then, and sprinkling equipment motion longitudinally again carries out sprinkling.Make the surface wettability of all glass fiber or cloth to requiring level.Then, carry out twining continuously again of mold integral surface by computer control.Reach required thickness until fiberglass arc sheet cylindrical shell.
Owing to adopted inner flange design and processing, even the winding of glass fiber or cloth is also keeping same tightening force on the edge grain of flange.This is a crucial part of inner flange face design.If make export-oriented flange, also have no idea when the winding of continuous glass fiber or cloth, to keep tightening force at present.Can only as the way of making the export-oriented flange of other fiberglass, make the flange face of big length by hand by the way of hand paste and fixed mould.Speed is slow, and quality can't guarantee comprehensively.
Main feature of the present invention is that what to be different from that fiberglass equipment and fibre glass product manufacture adopt is whole circumferential mould, the particularly production of large diameter fiberglass cylinder, is not easy to transportation, can only build vertical fiberglass wrapping machine at the scene.
The another one characteristics of product purpose of the present invention are when having a lot of large diameter fiberglass cylinder products just to be used for the lower operating mode of internal pressure, such as the chimney that has only gas, perhaps the solution tank body of low-pressure adopts on-the-spot vertical winding technology, and production cost is too high.
Whole die length is generally 12.5 meters, and the fiberglass after making and repairing is 12 meters along the circumferential sectors drum length.Can increase length as required, or make short fiberglass subsection cylindrical at existing grinding tool.
The invention solves the problem of using the fiberglass chimney such as existing chimney effectively.How the LARGE DIAMETER FRP chimney lifts into, and this housing of available coagulation soil chimney is a very large difficult problem.Existing way is exactly to open very big hole at concrete chimney.Segmented of the present invention assembling cylinder can be opened smaller hole for hoist such as concrete chimney in existing structure, namely can from outside lifting in the chimney.And then assemble in the chimney.Assembling with whole fiberglass inner core.
The invention solves the problem of in factory, carrying out large-scale production of LARGE DIAMETER FRP tube.Need not build factory in the site of deployment of glass fibre reinforced plastic cylinder, or vertical Wiring apparatus.Avoided delaying production because of the influence of weather the situation of waste composite.
The invention solves the long-distance transport problem of large diameter glass fibre reinforced plastic cylinder, avoided the transport restrictions of glass fibre reinforced plastic cylinder of expensive 4 meters maximum upper limit and the freight of expensive LARGE DIAMETER FRP tube.
The present invention has greatly impelled the application of LARGE DIAMETER FRP tube in industry, adopts good resinousness material, and is high temperature resistant, resistance to chemical attack, a large amount of insurmountable problems or a difficult problem before can solving.
The present invention is not restricted to along circumferential sectors, can be arc, and irregular approximate circumference squarely waits the segmentation of other shape to be connected with inner flange.
Claims (1)
1. method of producing the LARGE DIAMETER FRP cylinder, its mould has one section circular arc panel, axial two ends at this circular arc panel are connected with end plate, be connected with outwardly directed central shaft at the middle part of this end plate, to radially being connected with the inner flange panel, the axial two ends of this inner flange panel are connected with described end plate in circular arc panel two sides;
Described circular arc panel inboard is provided with the backplate that is connected with the inner flange panel with end plate, is provided with bracing frame between circular arc panel inboard and backplate;
It may further comprise the steps:
(1), is coated with demoulding wax at the circular arc panel of mould and the outer surface of inner flange panel, bag polyester film, making liner; Rotated continuously by central shaft rotating band moving mold, fibre reinforced materials carries out whole winding along the circular arc panel of mould and the outer surface of inner flange panel, divides glass fiber to intersect and twines and the winding of glass wool cloth hoop; After the entire die glass wool cloth twined comprehensively, mould stopped the rotation; Resin composite materials carries out sprinkling vertically; Low-angle rotary die again, resin composite materials carries out sprinkling vertically; The sprinkling head carries out reciprocating; And when sprinkling, mould is actionless; After the one way sprinkling, mould low-angle rotation again; In this sprinkling process, the baffle plate that compresses that arranges on the inner flange panel face is in impaction state, to prevent the resin composite materials trickling, finishes at the circular arc panel of mould and the outer surface of inner flange panel until the sprinkling of one deck; Open and compress baffle plate, mould enters continuous rotation status, twines other one deck glass fiber or cloth at mould; Repeatedly repeat said process, meet the requirements of thickness until resin composite materials;
(2), solidify: mould rotates at a slow speed, keeps the uniform thickness that is wrapped in the glass fibre reinforced plastic cylinder on the mould before solidifying, and solidifies until the glass fibre reinforced plastic cylinder form;
(3), the demoulding: adopt ingot stripper, with the glass fibre reinforced plastic cylinder that is wrapped in the integral body on the mould radially the demoulding get off;
(4), finishing: glass fibre reinforced plastic cylinder after the demoulding is trimmed to the length of requirement, the fineness on surface, the inner flange panel require width; Prune away on the mould backplate not by moistening glass fiber or cloth, made a cylindrical shell arc sheet of cylinder;
(5), finish: bore fixedly connected hole at the both sides of cylindrical shell arc sheet inner flange panel, be polished into rough surface at inner flange panels outside face, in order to adopt chemical seccotine bonding, the connecting hole that is inserted on the inner flange panel be connected by bolt by several cylindrical shell arc sheets in factory is connected to a cylinder, carries out pre-butt joint and the adjustment of segmentation of the circumference of whole cylinder; Finally be used for being assembled into the fiberglass cylinder of circumferential shapes by the cylindrical shell arc sheet of glass fibre reinforced plastic cylinder.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200910249925 CN102085726B (en) | 2009-12-04 | 2009-12-04 | Die and method for producing large-diameter glass fiber reinforced plastic cylinder |
| US12/831,506 US20110132525A1 (en) | 2009-12-04 | 2010-07-07 | Mold And A Method Of Manufacturing Large Diameter FRP Flues |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200910249925 CN102085726B (en) | 2009-12-04 | 2009-12-04 | Die and method for producing large-diameter glass fiber reinforced plastic cylinder |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102085726A CN102085726A (en) | 2011-06-08 |
| CN102085726B true CN102085726B (en) | 2013-09-11 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200910249925 Expired - Fee Related CN102085726B (en) | 2009-12-04 | 2009-12-04 | Die and method for producing large-diameter glass fiber reinforced plastic cylinder |
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| CN (1) | CN102085726B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110370686A (en) * | 2019-08-13 | 2019-10-25 | 核工业第八研究所 | A kind of double composite material enhancing ring manufacture crafts |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112428571A (en) * | 2020-10-23 | 2021-03-02 | 唐山市聚鹏机械设备有限公司 | Manufacturing method of carbon fiber magnetic separator cylinder |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2047215U (en) * | 1989-01-25 | 1989-11-08 | 张家港市特种玻璃钢厂 | Fibreglass reinforced plastic pipe collapsible core-mould |
| US5205340A (en) * | 1989-06-27 | 1993-04-27 | Brown Foundry System, Inc. | Insulated paper sleeve for casting metal articles in sand molds |
| CN1231231A (en) * | 1999-02-05 | 1999-10-13 | 孙世环 | Equipment for producing one step integrally formed ultralarge capacity hollow plastic container |
| CN2701975Y (en) * | 2004-07-15 | 2005-05-25 | 北京建工一建工程建设有限公司 | Diameter variable glass fiber reinforced plastic column template |
| CN201573342U (en) * | 2009-12-04 | 2010-09-08 | 夏群 | Mould for manufacturing large-diameter fiber reinforced plastic barrel |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2604302Y (en) * | 2003-02-21 | 2004-02-25 | 天津天联复合材料有限公司 | Mould for thin shell type glass fiber reinforced plastic piping |
| CN2858238Y (en) * | 2005-12-28 | 2007-01-17 | 南京林业大学 | Assemble glass fibre reinforced plastic storage tank die |
-
2009
- 2009-12-04 CN CN 200910249925 patent/CN102085726B/en not_active Expired - Fee Related
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2047215U (en) * | 1989-01-25 | 1989-11-08 | 张家港市特种玻璃钢厂 | Fibreglass reinforced plastic pipe collapsible core-mould |
| US5205340A (en) * | 1989-06-27 | 1993-04-27 | Brown Foundry System, Inc. | Insulated paper sleeve for casting metal articles in sand molds |
| CN1231231A (en) * | 1999-02-05 | 1999-10-13 | 孙世环 | Equipment for producing one step integrally formed ultralarge capacity hollow plastic container |
| CN2701975Y (en) * | 2004-07-15 | 2005-05-25 | 北京建工一建工程建设有限公司 | Diameter variable glass fiber reinforced plastic column template |
| CN201573342U (en) * | 2009-12-04 | 2010-09-08 | 夏群 | Mould for manufacturing large-diameter fiber reinforced plastic barrel |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110370686A (en) * | 2019-08-13 | 2019-10-25 | 核工业第八研究所 | A kind of double composite material enhancing ring manufacture crafts |
| CN110370686B (en) * | 2019-08-13 | 2021-03-12 | 核工业第八研究所 | Manufacturing process of double-composite material reinforced ring |
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| CN102085726A (en) | 2011-06-08 |
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Effective date of registration: 20170411 Address after: Huaiyin District of Ji'nan City, Shandong province 250000 by a District Road fat Lane District 1 building 1617 Patentee after: Ji'nan Houde Environmental Protection Engineering Co. Ltd. Address before: 116031 16-1-3-1 District, Ganjingzi, Liaoning, spring B2 District No. Patentee before: Xia Qun |
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Granted publication date: 20130911 Termination date: 20181204 |