CN106003373A - Forming mould for square-tube-shaped neutron absorbing layer and forming method for square-tube-shaped neutron absorbing layer - Google Patents
Forming mould for square-tube-shaped neutron absorbing layer and forming method for square-tube-shaped neutron absorbing layer Download PDFInfo
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- CN106003373A CN106003373A CN201610382719.5A CN201610382719A CN106003373A CN 106003373 A CN106003373 A CN 106003373A CN 201610382719 A CN201610382719 A CN 201610382719A CN 106003373 A CN106003373 A CN 106003373A
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- stem
- main body
- locating piece
- boron carbide
- molding chamber
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B28—WORKING CEMENT, CLAY, OR STONE
- B28B—SHAPING CLAY OR OTHER CERAMIC COMPOSITIONS; SHAPING SLAG; SHAPING MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER
- B28B3/00—Producing shaped articles from the material by using presses; Presses specially adapted therefor
- B28B3/02—Producing shaped articles from the material by using presses; Presses specially adapted therefor wherein a ram exerts pressure on the material in a moulding space; Ram heads of special form
- B28B3/021—Ram heads of special form
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B28—WORKING CEMENT, CLAY, OR STONE
- B28B—SHAPING CLAY OR OTHER CERAMIC COMPOSITIONS; SHAPING SLAG; SHAPING MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER
- B28B3/00—Producing shaped articles from the material by using presses; Presses specially adapted therefor
- B28B3/02—Producing shaped articles from the material by using presses; Presses specially adapted therefor wherein a ram exerts pressure on the material in a moulding space; Ram heads of special form
- B28B3/10—Producing shaped articles from the material by using presses; Presses specially adapted therefor wherein a ram exerts pressure on the material in a moulding space; Ram heads of special form each charge of material being compressed against previously formed body
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B28—WORKING CEMENT, CLAY, OR STONE
- B28B—SHAPING CLAY OR OTHER CERAMIC COMPOSITIONS; SHAPING SLAG; SHAPING MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER
- B28B7/00—Moulds; Cores; Mandrels
- B28B7/16—Moulds for making shaped articles with cavities or holes open to the surface, e.g. with blind holes
- B28B7/18—Moulds for making shaped articles with cavities or holes open to the surface, e.g. with blind holes the holes passing completely through the article
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B28—WORKING CEMENT, CLAY, OR STONE
- B28B—SHAPING CLAY OR OTHER CERAMIC COMPOSITIONS; SHAPING SLAG; SHAPING MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER
- B28B7/00—Moulds; Cores; Mandrels
- B28B7/28—Cores; Mandrels
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B28—WORKING CEMENT, CLAY, OR STONE
- B28B—SHAPING CLAY OR OTHER CERAMIC COMPOSITIONS; SHAPING SLAG; SHAPING MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER
- B28B7/00—Moulds; Cores; Mandrels
- B28B7/36—Linings or coatings, e.g. removable, absorbent linings, permanent anti-stick coatings; Linings becoming a non-permanent layer of the moulded article
Abstract
The invention discloses a forming mould for a square-tube-shaped neutron absorbing layer and a forming method for the square-tube-shaped neutron absorbing layer. A mould main body of the forming mould for the square-tube-shaped neutron absorbing layer consists of four main body steel plates and a forming cavity is formed inside the mould main body. A positioning block is mounted in the forming cavity in an embedded way and a core column is mounted on the upper end side of the positioning block. An upper pressing plate is mounted on the upper end surface of the mould main body in a screwed way and the upper end part of the core column penetrates a pressing plate through hole of the upper pressing plate and extends to the upper end side of the upper pressing plate. A positioning screw is mounted on the lower end side of the positioning block. The positioning screw comprises a fixing part and a screw part. The fixing part of the positioning screw is mounted at the lower end surface of the positioning block in a screwed way. A positioning sleeve pipe which is pressed tightly by a gland nut and a lower gland are mounted on the screw part of the positioning screw in a sleeving way. The forming mould is capable of forming and preparing the square-tube-shaped neutron absorbing layer effectively and novel in structure and design. Combined with the abovementioned structure of the forming mould, the forming method is capable of forming and preparing the square-tube-shaped neutron absorbing layer effectively.
Description
Technical field
The present invention relates to anti-nuclear radiation device technique field, particularly relate to a kind of square tube type neutron absorbing layer forming method mould and forming method thereof.
Background technology
In nuclear device, in order to prevent radioprotective, carry out shielding protection frequently with nuclear material and technology；At present frequently with neutron absorber material be lead-boron polythene, boracic polypropylene, its advantage is that shielding construction is simple, shield is lightweight, volume is little；But, lead-boron polythene is the most aging, and the life-span is short, which limits its application；Cadmium plate also can be used as neutron absorber material, but cadmium is poisonous, carcinogenic；Boron steel also can be used as neutron absorber material, but boron steel boron content is the lowest, is difficult to meet shielding needs.
It should further be noted that boron carbide has higher neutron absorption capability, its thermal-neutron capture cross-section is high, capture spectra width, not producing radiosiotope, Secondary radiation energy is low, and corrosion-resistant, Heat stability is good, the mosaic dress patch often sinter with boron carbide at nuclear power station exterior wall, plays the effect of absorption neutron, but boron carbide poor toughness, fragility is big, it is difficult to make the neutron absorber material of structure-function integration.
Metallic aluminium has preferable toughness, material is light, ductile, corrosion-resistant, plasticity is strong, do carrier with metal aluminum or aluminum alloy, make neutron absorber with boron carbide, make Metal Substrate neutron absorber material, toughness of material can be improved, ensure that there is neutron-absorbing performance.
As a kind of anti-nuclear radiation device, square tube type neutron absorbing layer is applied relatively broad under nuclear radiation environment, but the molding preparation lacking square tube type neutron absorbing layer effectively in prior art is taken precautions against.
Summary of the invention
It is an object of the invention to provide a kind of square tube type neutron absorbing layer mould, this square tube type neutron absorbing layer forming method mould molding can prepare square tube type neutron absorbing layer, novel in structural design effectively.
Another object of the present invention is to provide a kind of square tube type neutron absorbing layer forming method, this square tube type neutron absorbing layer forming method molding can prepare square tube type neutron absorbing layer effectively.
For reaching above-mentioned purpose, the present invention is achieved through the following technical solutions.
nullA kind of square tube type neutron absorbing layer mould，Include square-shaped die main body，Die main body is formed in the main body steel plate spiral shell successively dress being vertically arranged respectively by four pieces，The inside of die main body form by four blocks of main body steel plates enclose dress form and up and down completely through molding chamber，The cross section of molding chamber is square-shaped，The upper surface level of four blocks of main body steel plates is concordant，The lower surface level of four blocks of main body steel plates is concordant，The forming cavity indoor of die main body are embedded with the locating piece that shape of cross section is suitable with the shape of cross section of molding chamber，The upper surface of locating piece、Lower surface is respectively horizontal plane，The upper end side of locating piece is equiped with bottom and is intercalated in the stem stem that forming cavity is indoor，The cross section of stem stem is square-shaped and stem stem is positioned at the center of molding chamber，Each vertical surface of stem stem respectively and the corresponding side of molding chamber inwall interval arrange，The upper surface of locating piece offers upwardly opening locating slot，The locating slot of the bottom correspondence locating piece of stem stem is provided with the location division protruding extension down，The shape of cross section of the shape of cross section of locating slot and the location division of stem stem is respectively square shape，In the location division of stem stem is intercalated in the locating slot of locating piece and locating piece is fastened by lock screw with stem stem，The upper surface of die main body is equiped with the top board being spirally connected by lock screw with each main body steel plate，The centre position of top board offer up and down completely through and the shape of cross section pressing plate through hole suitable with the shape of cross section of stem stem，The upper end of stem stem passes the pressing plate through hole of top board and extends to the upper end side of top board，The lower end side of locating piece is equiped with positioning screw，Positioning screw includes fixed part and in the threaded shank being vertically arranged，The upper end of positioning screw is intercalated in indoor and positioning screw the fixed part of forming cavity and is spirally connected by the lower surface of lock screw with locating piece，The bottom of the threaded shank of positioning screw extends to the lower end side of die main body，The threaded shank of positioning screw is set with locating sleeve and is positioned at the lower cover of locating sleeve lower end side，The threaded shank of positioning screw is screwed with the gland nut being positioned at lower cover lower end side，Locating sleeve is clamped between the fixed part of positioning screw and lower cover，Lower cover is clamped between locating sleeve and gland nut，Lower cover is spirally connected by the lower surface of lock screw with each main body steel plate.
Wherein, the vertical surface of described stem stem is pasted with Teflon thin film.
A kind of square tube type neutron absorbing layer forming method, includes following processing step, particularly as follows:
1, take ethanol by the non-woven fabrics libation at an ancient wedding ceremony and rub each surface of clean locating piece, to remove the dust granules being adsorbed in locating piece surface；
2, taking vaseline by the hairbrush libation at an ancient wedding ceremony and vaseline is uniformly applied to the upper surface of locating piece, the thickness of vaseline is 0.1mm-0.2mm；
3, stem stem is vertically stood upside down it is positioned on pincers worker marble mounting plate, and take ethanol by the non-woven fabrics libation at an ancient wedding ceremony and rub Teflon film surface and the surface of location division of clean stem stem, to remove the dust granules being adsorbed in stem stem surface；
4, the locating slot of locating piece is directed at the location division of stem stem and the location division of stem stem is intercalated in the locating slot of locating piece, utilize copper rod the most down beat locating piece and stem stem is combined closely with locating piece, then by lock screw, stem stem is fastened with locating piece；
5, after bag stem stem assembles with locating piece, continue to keep stem stem, locating piece to be vertically inverted on pincers worker marble mounting plate, and the location division of positioning screw is screwed on locating piece by lock screw；
6, after the location division spiral shell dress of screw rod to be positioned, the threaded shank that locating sleeve, lower cover are set in positioning screw successively is peripheral, then screw gland nut and by gland nut, locating sleeve, lower cover compressed successively, wherein, before lower cover is set in the threaded shank of positioning screw, it is clean that lower cover takes ethanol erasing by the non-woven fabrics libation at an ancient wedding ceremony, to remove the dust granules being adsorbed in lower cover surface；
7, take ethanol by the non-woven fabrics libation at an ancient wedding ceremony and rub the surface of clean four blocks of main body steel plates, to remove the dust granules being adsorbed in each main body surface of steel plate, then four blocks of main body steel plates are spirally connected successively fixing to be assembled into die main body by lock screw, take ethanol by the non-woven fabrics libation at an ancient wedding ceremony the most again and rub the inwall of clean molding chamber；
8, after treating die main body assembling, lower cover spiral shell dress, to the molding chamber of die main body, is then fixed on the lower surface of each main body steel plate by assembly parts installation forming die location setting-in stem stem, locating piece, positioning screw, top trocar sheath, lower cover, gland nut assembled successively by lock screw；
9, prepare four blocks of aluminium sheets according to the design height of square tube type neutron absorbing layer, and the one side of each aluminium sheet is ground coarse by the emery wheel abrasive disc driven by hands frosted turbine；
The forming cavity that 10, four blocks of aluminium sheets are inserted into die main body respectively is indoor, the forming cavity chamber interior walls that the shiny surface of each inwall of molding chamber corresponding one block of aluminium sheet and each aluminium sheet respectively reclines corresponding respectively；
11, by adhesive tape sticking in the upper surface of the main body steel plate of upper surface and the corresponding side of each aluminium sheet, the gap between aluminium sheet and main body steel plate is sealed by adhesive tape；
12, boron carbide molding mass is poured into forming cavity via the upper end open of molding chamber indoor, during pouring boron carbide molding mass into, the indoor boron carbide molding mass pressure of forming cavity will be poured into uniformly by iron, boron carbide molding mass height in chamber to be formed reach square tube type neutron absorbing layer design height four/for the moment, holding pad put into indoor to forming cavity and by 10T hydraulic press, holding pad pressurizeed, the boron carbide molding mass poured into is compressed by holding pad；
13, after a binder completes, take out holding pad and continue to pour boron carbide molding mass into toward forming cavity indoor, boron carbide molding mass height in chamber to be formed reach square tube type neutron absorbing layer design height two/for the moment, again holding pad put into indoor to forming cavity and by 10T hydraulic press, holding pad pressurizeed, the boron carbide molding mass poured into is compressed by holding pad；
14, after secondary binder completes, take out holding pad and continue to pour boron carbide molding mass into toward forming cavity indoor, when boron carbide molding mass height in chamber to be formed reaches 3/4ths of square tube type neutron absorbing layer design height, again holding pad put into indoor to forming cavity and by 10T hydraulic press, holding pad pressurizeed, the boron carbide molding mass poured into is compressed by holding pad；
15, after three binders complete, take out holding pad and continue to pour boron carbide molding mass into toward forming cavity indoor, when the interpolation of boron carbide molding mass highly exceeds die main body upper surface about 2mm, pressurize to be compressed by the boron carbide molding mass poured into by holding pad to holding pad again by 10T hydraulic press；
16, after four binders complete, continue to pour boron carbide molding mass into, until boron carbide molding mass is concordant with the upper surface of die main body toward forming cavity indoor；
17, taking ethanol by the non-woven fabrics libation at an ancient wedding ceremony and rub the lower surface of clean top board, to remove the dust granules being adsorbed in lower platen lower surface, then the lower surface in top board uniformly coats vaseline, and the thickness of vaseline is 0.1mm-0.2mm；
18, by the pressing plate through-hole alignment stem stem of top board and make stem stem upper end through the pressing plate through hole of top board, then by lock screw, top board spiral shell dress is fixed on the upper surface of each main body steel plate；
19, after mould to be formed is all locked, boron carbide molding mass stands solidification in mould, and hardening time is 5-8 hour, and the then demoulding also completes square tube type neutron-absorbing formable layer and prepares.
The invention have the benefit that a kind of square tube type neutron absorbing layer mould of the present invention, it includes that die main body is made up of four blocks of main body steel plates and the internal moulding moulded chamber of die main body, forming cavity indoor setting-in locating piece, locating piece upper end side installing stem stem, the location division of stem stem bottom is intercalated in the locating slot of locating piece, die main body upper surface spiral shell loads onto pressing plate, stem stem upper end passes the pressing plate through hole of top board and extends to top board upper end side, locating piece lower end side installing positioning screw, positioning screw includes fixed part, threaded shank, positioning screw fixed part be screwed on locating piece lower surface, the threaded shank of positioning screw is set with the locating sleeve compressed by gland nut, lower cover, lower cover is spirally connected with each main body steel plate lower surface by lock screw.Being designed by said structure, this mould molding can prepare square tube type neutron absorbing layer, novel in structural design effectively.
Another of the present invention has the beneficial effect that a kind of square tube type neutron absorbing layer forming method of the present invention, and it includes following processing step: 1, locating piece ethanol is cleaned；2, locating piece coating vaseline；3, stem stem ethanol is cleaned；4, locating piece and stem stem assembly connection；5, positioning screw and locating piece assembly connection；6, assembling locating sleeve, lower cover, gland nut；7, die main body assembles and carries out ethanol scouring；8, assembly parts installation forming die location stem stem, locating piece, positioning screw, top trocar sheath, lower cover, gland nut assembled successively is embedded in the molding chamber to die main body, and locking lower cover；9, aluminium sheet is prepared；10, aluminium sheet is installed；11, Continuous pressing device for stereo-pattern；12, a binder；13, secondary binder；14, three binders；15, four binders；16, additional fillers；17, top board ethanol is cleaned and coats vaseline；18, fixing top board；19, solidification is stood.Being designed by above-mentioned processing step, this forming method molding can prepare square tube type neutron absorbing layer effectively.
Accompanying drawing explanation
Below with accompanying drawing, the present invention is further detailed, but the embodiment in accompanying drawing does not constitute any limitation of the invention.
Fig. 1 is the structural representation of the mould of the present invention.
Fig. 2 is the decomposing schematic representation of the mould of the present invention.
Fig. 3 is the generalized section of the mould of the present invention.
Fig. 1 to Fig. 3 includes:
1 die main body 11 main body steel plate
12 molding chamber 2 locating pieces
21 locating slots
3 stem stems
31 location divisions
4 top boards
41 pressing plate through hole 5 positioning screws
51 fixed parts
52 threaded shank
6 locating sleeve 7 lower covers
8 gland nuts.
Detailed description of the invention
Below in conjunction with specific embodiment, the present invention will be described.
nullAs shown in Figure 1 to Figure 3，A kind of square tube type neutron absorbing layer mould，Include square-shaped die main body 1，Die main body 1 is formed in the main body steel plate 11 spiral shell successively dress being vertically arranged respectively by four pieces，The inside of die main body 1 form by four blocks of main body steel plates 11 enclose dress form and up and down completely through molding chamber 12，The cross section of molding chamber 12 is square-shaped，The upper surface level of four blocks of main body steel plates 11 is concordant，The lower surface level of four blocks of main body steel plates 11 is concordant，The locating piece 2 that shape of cross section is suitable with the shape of cross section of molding chamber 12 it is embedded with in the molding chamber 12 of die main body 1，The upper surface of locating piece 2、Lower surface is respectively horizontal plane，The upper end side of locating piece 2 is equiped with the stem stem 3 that bottom is intercalated in molding chamber 12，The cross section of stem stem 3 is square-shaped and stem stem 3 is positioned at the center of molding chamber 12，Each vertical surface of stem stem 3 respectively and the corresponding side of molding chamber 12 inwall interval arrange，The upper surface of locating piece 2 offers upwardly opening locating slot 21，The locating slot 21 of the bottom correspondence locating piece 2 of stem stem 3 is provided with the location division 31 protruding extension down，The shape of cross section of the shape of cross section of locating slot 21 and the location division 31 of stem stem 3 is respectively square shape，In the location division 31 of stem stem 3 is intercalated in the locating slot 21 of locating piece 2 and locating piece 2 is fastened by lock screw with stem stem 3，The upper surface of die main body 1 is equiped with the top board 4 being spirally connected by lock screw with each main body steel plate 11，The centre position of top board 4 offer up and down completely through and the shape of cross section pressing plate through hole 41 suitable with the shape of cross section of stem stem 3，The upper end of stem stem 3 passes the pressing plate through hole 41 of top board 4 and extends to the upper end side of top board 4，The lower end side of locating piece 2 is equiped with positioning screw 5，Positioning screw 5 includes fixed part 51 and in the threaded shank 52 being vertically arranged，The upper end of positioning screw 5 is intercalated in interior and positioning screw 5 the fixed part 51 of molding chamber 12 and is spirally connected by the lower surface of lock screw with locating piece 2，The bottom of the threaded shank 52 of positioning screw 5 extends to the lower end side of die main body 1，The threaded shank 52 of positioning screw 5 is set with locating sleeve 6 and is positioned at the lower cover 7 of locating sleeve 6 lower end side，The threaded shank 52 of positioning screw 5 is screwed with the gland nut 8 being positioned at lower cover 7 lower end side，Locating sleeve 6 is clamped between the fixed part 51 of positioning screw 5 and lower cover 7，Lower cover 7 is clamped between locating sleeve 6 and gland nut 8，Lower cover 7 is spirally connected by the lower surface of lock screw with each main body steel plate 11.
Further, the vertical surface of stem stem 3 is pasted with Teflon thin film.Need to be explained further, during square tube type neutron absorbing layer is prepared in mould molding, Teflon thin film can strengthen the anti-wear performance of stem stem 3, and the beneficially square tube type neutron absorbing layer demoulding effectively.
In conjunction with above-mentioned forming die structure, the present invention can carry out molding by following forming method and prepare square tube type neutron absorbing layer, and concrete, this square tube type neutron absorbing layer forming method includes following processing step, particularly as follows:
1, take ethanol by the non-woven fabrics libation at an ancient wedding ceremony and rub each surface of clean locating piece 2, to remove the dust granules being adsorbed in locating piece 2 surface；
2, taking vaseline by the hairbrush libation at an ancient wedding ceremony and vaseline is uniformly applied to the upper surface of locating piece 2, the thickness of vaseline is 0.1mm-0.2mm；
3, stem stem 3 is vertically stood upside down it is positioned on pincers worker marble mounting plate, and take ethanol by the non-woven fabrics libation at an ancient wedding ceremony and rub Teflon film surface and the surface of location division 31 of clean stem stem 3, to remove the dust granules being adsorbed in stem stem 3 surface；
4, the locating slot 21 of locating piece 2 is directed at the location division 31 of stem stem 3 and the location division 31 of stem stem 3 is intercalated in the locating slot 21 of locating piece 2, utilize copper rod the most down beat locating piece 2 and stem stem 3 is combined closely with locating piece 2, then by lock screw, stem stem 3 is fastened with locating piece 2；
5, after bag stem stem 3 assembles with locating piece 2, continue to keep stem stem 3, locating piece 2 to be vertically inverted on pincers worker marble mounting plate, and by lock screw, the location division 31 of positioning screw 5 is screwed on locating piece 2；
6, after the location division 31 spiral shell dress of screw rod 5 to be positioned, the threaded shank 52 that locating sleeve 6, lower cover 7 are set in positioning screw 5 successively is peripheral, then screw gland nut 8 and by gland nut 8, locating sleeve 6, lower cover 7 compressed successively, wherein, before lower cover 7 is set in the threaded shank 52 of positioning screw 5, it is clean that lower cover 7 takes ethanol erasing by the non-woven fabrics libation at an ancient wedding ceremony, to remove the dust granules being adsorbed in lower cover 7 surface；
7, take ethanol by the non-woven fabrics libation at an ancient wedding ceremony and rub the surface of clean four blocks of main body steel plates 11, to remove the dust granules being adsorbed in each main body steel plate 11 surface, then four blocks of main body steel plates 11 are spirally connected successively fixing to be assembled into die main body 1 by lock screw, take ethanol by the non-woven fabrics libation at an ancient wedding ceremony the most again and rub the inwall of clean molding chamber 12；
8, after treating die main body 1 assembling, lower cover 7 spiral shell dress, to the molding chamber 12 of die main body 1, is then fixed on the lower surface of each main body steel plate 11 by assembly parts installation forming die location setting-in stem stem 3, locating piece 2, positioning screw 5, top trocar sheath, lower cover 7, gland nut 8 assembled successively by lock screw；
9, prepare four blocks of aluminium sheets according to the design height of square tube type neutron absorbing layer, and the one side of each aluminium sheet is ground coarse by the emery wheel abrasive disc driven by hands frosted turbine；
10, four blocks of aluminium sheets are inserted in the molding chamber 12 of die main body 1 respectively, molding chamber 12 inwall that the shiny surface of each inwall of molding chamber 12 corresponding one block of aluminium sheet and each aluminium sheet respectively reclines corresponding respectively；
11, by adhesive tape sticking in the upper surface of the main body steel plate 11 of upper surface and the corresponding side of each aluminium sheet, the gap between aluminium sheet and main body steel plate 11 is sealed by adhesive tape；
12, boron carbide molding mass is poured in molding chamber 12 via the upper end open of molding chamber 12, during pouring boron carbide molding mass into, by iron by uniform for the boron carbide molding mass pressure being poured in molding chamber 12, boron carbide molding mass height in chamber 12 to be formed reach square tube type neutron absorbing layer design height four/for the moment, holding pad put into molding chamber 12 and by 10T hydraulic press, holding pad pressurizeed, the boron carbide molding mass poured into is compressed by holding pad；
13, after a binder completes, take out holding pad and continue to pour boron carbide molding mass in molding chamber 12, boron carbide molding mass height in chamber 12 to be formed reach square tube type neutron absorbing layer design height two/for the moment, again holding pad put into molding chamber 12 and by 10T hydraulic press, holding pad pressurizeed, the boron carbide molding mass poured into is compressed by holding pad；
14, after secondary binder completes, take out holding pad and continue to pour boron carbide molding mass in molding chamber 12, when boron carbide molding mass height in chamber 12 to be formed reaches 3/4ths of square tube type neutron absorbing layer design height, again holding pad put into molding chamber 12 and by 10T hydraulic press, holding pad pressurizeed, the boron carbide molding mass poured into is compressed by holding pad；
15, after three binders complete, take out holding pad and continue to pour boron carbide molding mass in molding chamber 12, when the interpolation of boron carbide molding mass highly exceeds die main body 1 upper surface about 2mm, pressurize to be compressed by the boron carbide molding mass poured into by holding pad to holding pad again by 10T hydraulic press；
16, after four binders complete, continue in molding chamber 12, to pour boron carbide molding mass into, until boron carbide molding mass is concordant with the upper surface of die main body 1；
17, taking ethanol by the non-woven fabrics libation at an ancient wedding ceremony and rub the lower surface of clean top board 4, to remove the dust granules being adsorbed in lower platen lower surface, then the lower surface in top board 4 uniformly coats vaseline, and the thickness of vaseline is 0.1mm-0.2mm；
18, the pressing plate through hole 41 of top board 4 is directed at stem stem 3 and makes stem stem 3 upper end through the pressing plate through hole 41 of top board 4, then by lock screw, top board 4 spiral shell dress is fixed on the upper surface of each main body steel plate 11；
19, after mould to be formed is all locked, boron carbide molding mass stands solidification in mould, and hardening time is 5-8 hour, and the then demoulding also completes square tube type neutron-absorbing formable layer and prepares.
Being designed by said structure, the mould of the present invention molding can prepare square tube type neutron absorbing layer, novel in structural design effectively；And designed by above-mentioned processing step, the forming method of the present invention molding can prepare square tube type neutron absorbing layer effectively.
Above content is only presently preferred embodiments of the present invention, for those of ordinary skill in the art, according to the thought of the present invention, the most all will change, and this specification content should not be construed as limitation of the present invention.
Claims (3)
- null1. a square tube type neutron absorbing layer mould，It is characterized in that: include square-shaped die main body (1)，Die main body (1) is formed in main body steel plate (11) the spiral shell successively dress being vertically arranged respectively by four pieces，The inside of die main body (1) form by four pieces of main body steel plates (11) enclose dress form and up and down completely through molding chamber (12)，The cross section of molding chamber (12) is square-shaped，The upper surface level of four pieces of main body steel plates (11) is concordant，The lower surface level of four pieces of main body steel plates (11) is concordant，The locating piece (2) that shape of cross section is suitable with the shape of cross section of molding chamber (12) it is embedded with in the molding chamber (12) of die main body (1)，The upper surface of locating piece (2)、Lower surface is respectively horizontal plane，The upper end side of locating piece (2) is equiped with the stem stem (3) that bottom is intercalated in molding chamber (12)，The cross section of stem stem (3) is square-shaped and stem stem (3) is positioned at the center of molding chamber (12)，Each vertical surface of stem stem (3) respectively and molding chamber (12) corresponding side inwall interval arrange，The upper surface of locating piece (2) offers upwardly opening locating slot (21)，The locating slot (21) of bottom correspondence locating piece (2) of stem stem (3) is provided with the location division (31) protruding extension down，The shape of cross section of the shape of cross section of locating slot (21) and the location division (31) of stem stem (3) is respectively square shape，In the location division (31) of stem stem (3) is intercalated in the locating slot (21) of locating piece (2) and locating piece (2) is fastened by lock screw with stem stem (3)，The upper surface of die main body (1) is equiped with the top board (4) being spirally connected by lock screw and each main body steel plate (11)，The centre position of top board (4) offer up and down completely through and the shape of cross section pressing plate through hole (41) suitable with the shape of cross section of stem stem (3)，The upper end of stem stem (3) passes the pressing plate through hole (41) of top board (4) and extends to the upper end side of top board (4)，The lower end side of locating piece (2) is equiped with positioning screw (5)，Positioning screw (5) includes fixed part (51) and in the threaded shank (52) being vertically arranged，The upper end of positioning screw (5) is intercalated in interior and positioning screw (5) the fixed part (51) of molding chamber (12) and is spirally connected by the lower surface of lock screw with locating piece (2)，The bottom of the threaded shank (52) of positioning screw (5) extends to the lower end side of die main body (1)，The threaded shank (52) of positioning screw (5) is set with locating sleeve (6) and is positioned at the lower cover (7) of locating sleeve (6) lower end side，The threaded shank (52) of positioning screw (5) is screwed with the gland nut (8) being positioned at lower cover (7) lower end side，Locating sleeve (6) is clamped between the fixed part (51) of positioning screw (5) and lower cover (7)，Lower cover (7) is clamped between locating sleeve (6) and gland nut (8)，Lower cover (7) is spirally connected by the lower surface of lock screw with each main body steel plate (11).
- A kind of square tube type neutron absorbing layer mould the most according to claim 1, it is characterised in that: the vertical surface of described stem stem (3) is pasted with Teflon thin film.
- 3. a square tube type neutron absorbing layer forming method, it is characterised in that include following processing step, particularly as follows:1, take ethanol by the non-woven fabrics libation at an ancient wedding ceremony and rub each surface of clean locating piece (2), to remove the dust granules being adsorbed in locating piece (2) surface；2, taking vaseline by the hairbrush libation at an ancient wedding ceremony and vaseline is uniformly applied to the upper surface of locating piece (2), the thickness of vaseline is 0.1mm-0.2mm；3, stem stem (3) vertically handstand is positioned on pincers worker marble mounting plate, and take ethanol by the non-woven fabrics libation at an ancient wedding ceremony and rub Teflon film surface and the surface of location division (31) of clean stem stem (3), it is adsorbed in the dust granules on stem stem (3) surface to remove；4, the locating slot (21) of locating piece (2) is directed at the location division (31) of stem stem (3) and the location division (31) of stem stem (3) is intercalated in the locating slot (21) of locating piece (2), utilize copper rod the most down beat locating piece (2) and stem stem (3) is combined closely with locating piece (2), then by lock screw, stem stem (3) is fastened with locating piece (2)；5, after bag stem stem (3) assembles with locating piece (2), continue to keep stem stem (3), locating piece (2) to be vertically inverted on pincers worker marble mounting plate, and by lock screw, the location division (31) of positioning screw (5) is screwed on locating piece (2)；6, after location division (31) the spiral shell dress of screw rod to be positioned (5), the threaded shank (52) that locating sleeve (6), lower cover (7) are set in positioning screw (5) successively is peripheral, then screw gland nut (8) and by gland nut (8), locating sleeve (6), lower cover (7) compressed successively, wherein, before lower cover (7) is set in the threaded shank (52) of positioning screw (5), it is clean that lower cover (7) takes ethanol erasing by the non-woven fabrics libation at an ancient wedding ceremony, to remove the dust granules being adsorbed in lower cover (7) surface；7, take ethanol by the non-woven fabrics libation at an ancient wedding ceremony and rub the surface of clean four pieces of main body steel plates (11), to remove the dust granules being adsorbed in each main body steel plate (11) surface, then four pieces of main body steel plates (11) are spirally connected successively fixing to be assembled into die main body (1) by lock screw, take ethanol by the non-woven fabrics libation at an ancient wedding ceremony the most again and rub the inwall of clean molding chamber (12)；8, after treating die main body (1) assembling, lower cover (7) spiral shell dress, to the molding chamber (12) of die main body (1), is then fixed on the lower surface of each main body steel plate (11) by assembly parts installation forming die location setting-in stem stem (3), locating piece (2), positioning screw (5), top trocar sheath, lower cover (7), gland nut (8) assembled successively by lock screw；9, prepare four blocks of aluminium sheets according to the design height of square tube type neutron absorbing layer, and the one side of each aluminium sheet is ground coarse by the emery wheel abrasive disc driven by hands frosted turbine；10, four blocks of aluminium sheets are inserted into respectively in the molding chamber (12) of die main body (1), molding chamber (12) inwall that the shiny surface of each inwall of molding chamber (12) corresponding one block of aluminium sheet and each aluminium sheet respectively reclines corresponding respectively；11, by adhesive tape sticking in the upper surface of the main body steel plate (11) of upper surface and the corresponding side of each aluminium sheet, the gap between aluminium sheet and main body steel plate (11) is sealed by adhesive tape；12, boron carbide molding mass is poured in molding chamber (12) via the upper end open of molding chamber (12), during pouring boron carbide molding mass into, the boron carbide molding mass pressure being poured in molding chamber (12) by iron is uniform, boron carbide molding mass height in chamber to be formed (12) reach square tube type neutron absorbing layer design height four/for the moment, holding pad put into molding chamber (12) and by 10T hydraulic press, holding pad pressurizeed, the boron carbide molding mass poured into is compressed by holding pad；13, after a binder completes, take out holding pad and continue to pour boron carbide molding mass in molding chamber (12), boron carbide molding mass height in chamber to be formed (12) reach square tube type neutron absorbing layer design height two/for the moment, again holding pad put into molding chamber (12) and by 10T hydraulic press, holding pad pressurizeed, the boron carbide molding mass poured into is compressed by holding pad；14, after secondary binder completes, take out holding pad and continue to pour boron carbide molding mass in molding chamber (12), when boron carbide molding mass height in chamber to be formed (12) reaches 3/4ths of square tube type neutron absorbing layer design height, again holding pad put into molding chamber (12) and by 10T hydraulic press, holding pad pressurizeed, the boron carbide molding mass poured into is compressed by holding pad；15, after three binders complete, take out holding pad and continue to pour boron carbide molding mass in molding chamber (12), when the interpolation of boron carbide molding mass highly exceeds die main body (1) upper surface about 2mm, pressurize to be compressed by the boron carbide molding mass poured into by holding pad to holding pad again by 10T hydraulic press；16, after four binders complete, continue in molding chamber (12), to pour boron carbide molding mass into, until boron carbide molding mass is concordant with the upper surface of die main body (1)；17, taking ethanol by the non-woven fabrics libation at an ancient wedding ceremony and rub the lower surface of clean top board (4), to remove the dust granules being adsorbed in lower platen lower surface, then the lower surface in top board (4) uniformly coats vaseline, and the thickness of vaseline is 0.1mm-0.2mm；18, the pressing plate through hole (41) of top board (4) is directed at stem stem (3) and makes stem stem (3) upper end through the pressing plate through hole (41) of top board (4), then by lock screw, top board (4) spiral shell dress is fixed on the upper surface of each main body steel plate (11)；19, after mould to be formed is all locked, boron carbide molding mass stands solidification in mould, and hardening time is 5-8 hour, and the then demoulding also completes square tube type neutron-absorbing formable layer and prepares.
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| CN106273678A (en) * | 2016-10-14 | 2017-01-04 | 东莞理工学院 | A kind of large radius end plane angle is the neutron-absorbing laminate processing technology of 135 degree |
| CN110838381A (en) * | 2019-10-31 | 2020-02-25 | 散裂中子源科学中心 | Neutron guide tube system with multi-stage collimation adjusting mechanism and collimation method thereof |
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| CN106003373B (en) | 2018-01-26 |
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