CN109306402A - A kind of heat treatment method of thorium base fused salt primary tank and core shroud - Google Patents
A kind of heat treatment method of thorium base fused salt primary tank and core shroud Download PDFInfo
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- CN109306402A CN109306402A CN201811425414.3A CN201811425414A CN109306402A CN 109306402 A CN109306402 A CN 109306402A CN 201811425414 A CN201811425414 A CN 201811425414A CN 109306402 A CN109306402 A CN 109306402A
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- heat treatment
- primary tank
- tooling
- core shroud
- circle
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- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D9/00—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor
- C21D9/50—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor for welded joints
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22F—CHANGING THE PHYSICAL STRUCTURE OF NON-FERROUS METALS AND NON-FERROUS ALLOYS
- C22F1/00—Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working
- C22F1/10—Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working of nickel or cobalt or alloys based thereon
Abstract
The invention discloses a kind of thorium base fused salt primary tank and the heat treatment methods of core shroud, include the following steps: S1: the heat treatment of primary tank, primary tank is heat-treated using vertical structure, bottom plate uses carbon steel or low alloy steel slab, it is placed horizontally on the furnace body bearing point in furnace, primary tank holding plane is provided；S2: the heat treatment of core shroud, core shroud are heat-treated using vertical structure, and bottom plate and partition are placed horizontally on the furnace body bearing point in furnace, provide the holding plane and isolation effect of core shroud.Using a kind of thorium base fused salt primary tank of the invention and the heat treatment method of core shroud, it can effectively ensure that the required precision of change in size in equipment heat treatment process, reduce heat treatment cost, obtain that function admirable, quality be stable, equipment after the higher heat treatment of precision, meet the manufacture requirement of thorium base fused salt primary tank and core shroud, extends service life of equipment.
Description
Technical field
The present invention relates to nuclear power industry fused salt project application fields, and in particular to a kind of thorium base fused salt primary tank and reactor core enclose
The heat treatment method of cylinder.
Background technique
Nickel-base alloy is widely used in petrochemical industry, space flight boat with its excellent mechanical behavior under high temperature and corrosion resisting property
The industry fields such as empty, ocean engineering and nuclear power station.UNS N10003 material belongs to one of Kazakhstan N series alloy, is thorium
The main material that core equipment primary tank and core shroud manufacture use in base fused salt (TMSR) nuclear power system, UNS N10003 belong to
Ni-Mo system high-temperature nickel-base alloy, nominal composition 70Ni-16Mo-7Cr-5Fe are right under 650~725 DEG C of hot environment
Fluorination salt has good corrosion resistance, high-temperature mechanical property and anti-radiation performance.
Because of thorium base fused salt primary tank and the straightness of core shroud equipment, ovality, heap inner support member flatness equidimension
Required precision is very high, to reduce constraint stress in equipment Manufacture Process, guarantees the dimensionally stable in equipment later period use process, mentions
The synthesis service performance of high equipment need to carry out post weld heat treatment to equipment.It is super for size occurs during preventing in heat treatment
Difference deformation need to carry out tooling constraint to equipment.The constraint of high temperature anti-deformation, the high temperature of one side material are such as carried out using iron-based material
Intensity is lower, can not play the role of tooling, on the other hand will cause the iron contamination of equipment again；As used other nickel-base materials
It carries out the constraint of high temperature anti-deformation and will cause heat treatment increased costs because material price is higher；As used with equipment same material
N10003 material carries out the constraint of high temperature anti-deformation, heat treatment can be made to achieve the effect that best, but because of N10003 material price
Higher and delivery cycle is very long, is bound to cause manufacturing cost and greatly increases, and generates unnecessary waste.
Summary of the invention
The purpose of the present invention is to provide a kind of thorium base fused salt primary tank and the heat treatment method of core shroud, thorium base fused salts
Primary tank mainly include lower head, lower shell, upper shell and upper flange composition, core shroud mainly include upper reinforcing rings, on
Shroud, lower shroud and shroud bottom deck assembly composition, primary tank annealing device mainly include bottom plate, partition, the first supporting block, the
One tooling circle, the second tooling circle, the second supporting block, internal component lacing wire, third tooling circle, third supporting block, the 4th tooling circle,
4th supporting block, flowing lumen, core shroud annealing device mainly include bottom plate, partition, the 5th supporting block, the 5th tooling circle,
Steel pipe, corner brace, pressing ring, isolation ring, isolation board, it is characterised in that: the heat treatment side of the thorium base fused salt primary tank and core shroud
Method includes the following steps:
S1: the heat treatment of primary tank, primary tank are heat-treated using vertical structure, and bottom plate uses carbon steel or low alloy steel
Slab is placed horizontally on the furnace body bearing point in furnace, provides primary tank holding plane；Partition is thin using austenitic stainless steel
Plate, isolation bottom plate and primary tank upper flange, prevent the iron contamination primary tank upper flange of bottom plate, and the first supporting block uses
N10003 material, quantity 3, circumferential to be uniformly spot welded on lower shell, the supporting point as the first tooling circle prevents heat treated
The first tooling circle falls in journey, is detached from commitment positions, and the first tooling circle uses austenitic stainless steel；Second tooling circle uses Ovshinsky
Body stainless steel, position are close on the internal component inside lower shell, prevent the heat-treatment distortion of internal component, while with 3
Second supporting block of N10003 material is circumferentially uniformly spot welded on lower shell, and is adjacent to the second tooling circle, prevents heat treatment process
In the second tooling circle fall, be detached from commitment positions, internal component lacing wire using N10003 material make, internal component lacing wire distinguish
With the side wall of lower shell and the surface firm welding of internal component, internal component lacing wire and the second tooling circle collective effect are prevented
The angular deformation of internal component in heat treatment process influences its flatness, austenite third tooling circle, the support of N10003 material third
Block by the same manner spot welding be arranged in forging pipe A1 nozzle on the upside of, third tooling circle and the first tooling circle on the basis of forging pipe A1, on
Lower two sides symmetry arrangement, spot welding installation is fixed in the same manner for the 4th tooling circle of austenite, the 4th supporting block of N10003 material
It at forging pipe A3, while preventing the orientation for forging pipe A3 in heat treatment process from deforming, opens hole on bottom plate and partition, this
When, through-hole and forging pipe A1, forging pipe A2, forging pipe A3 form stream of hot air cavity, and the circulation for hot-air in heat treatment process is more
It is smooth, primary tank internal and external temperature gradient is reduced, keeps the temperature uniformity of heat treatment more preferable；
S2: the heat treatment of core shroud, core shroud are heat-treated using vertical structure, and bottom plate and partition are horizontal positioned
In on the furnace body bearing point in furnace, the holding plane and isolation effect of core shroud are provided；At the open at both ends of upper shroud, cloth
Two groups of the 5th tooling circles of austenitic stainless steel are set, are respectively arranged 3 below two groups of the 5th tooling circles of austenitic stainless steel
5th supporting block of N10003 material, the 5th supporting block are circumferentially uniformly spot welded to shroud inner wall, prevent at the 5th tooling circle heat
It falls during reason；Intersect two groups of austenite stainless steels of vertical welding on the 5th tooling circle, plays the 5th tooling circle of rigid constraint
Effect；At the open at both ends of lower shroud, two groups of the 5th tooling circles of austenitic stainless steel are arranged, in two groups of austenitic stainless steels the
The 5th supporting block of 3 N10003 materials is respectively arranged below five tooling circles, the 5th supporting block is circumferentially uniformly spot welded to shroud
Inner wall prevents from falling in the 5th tooling circle heat treatment process；Intersect two groups of austenite stainless steels of vertical welding on the 5th tooling circle,
Play the 5th tooling circle of rigid constraint；Bottom deck assembly is placed horizontally on austenitic stainless steel isolation board, carbon steel is prevented
Austenitic stainless steel isolation ring is placed horizontally at bottom deck assembly surface, in isolation ring by the iron contamination bottom deck assembly of bottom plate
The pressed slab carbon steel or low alloy steel pressing ring in top, carbon steel or low alloy steel corner brace are buckled on pressing ring, by the both ends of corner brace point
It is not welded with pressing ring, bottom plate, makes bottom deck assembly is smooth to adhere on stainless steel isolation board, prevent heat treatment process indsole board group
The lower plate of part deforms, and the 5th supporting block of the 5th tooling circle of austenitic stainless steel and N10003 material is arranged in bottom plate group
Part it is suitable for reading, prevent port contraction distortion, equipment place and tooling arrangement after the completion of, furnace can be entered and carry out heating heat treatment.
Preferably, the first tooling circle, the second tooling circle, third tooling circle, the 4th tooling circle and primary tank cylinder in the S1
Internal wall reserves the gap of 1mm in circumferencial direction, is used as rate of deformation and buffers surplus.
Preferably, the first supporting block, the second supporting block, internal component lacing wire, third supporting block, the 4th support in the S1
Block is both needed to directly weld with primary tank, therefore uses N10003 material, prevents the dilution of primary tank material；Remaining multimaterial component is not
It is welded between primary tank.
Preferably, the S1 medium carbon steel or low-alloy steel component is not direct contacts with primary tank, between be all made of Ovshinsky
The isolation of body stainless steel material component.
Preferably, the 5th tooling circle and core shroud inner wall reserve the gap of 1mm in circumferencial direction in the S2, are used as and become
Shape speed to buffer surplus.
Preferably, the 5th supporting block needs directly to weld with core shroud in the S2, therefore uses N10003 material, prevents heap
The dilution of core shroud material, remaining multimaterial component do not weld between core shroud.
Preferably, the S2 medium carbon steel or low-alloy steel component is not direct contacts with core shroud, between be all made of Austria
The isolation of family name's body stainless steel material component.
Preferably, using 400 DEG C or more heating-cooling rate≤55 DEG C/h, 760~790 DEG C of holding temperature, duration is kept the temperature
The heat treatment process parameter of 360~380min carries out size stabilization heat treatment.
Compared with prior art, the beneficial effects of the present invention are: using a kind of thorium base fused salt primary tank of the invention and heap
The heat treatment method of core shroud can effectively ensure that the required precision of change in size in equipment heat treatment process, reduction are heat-treated to
This, obtains that function admirable, quality be stable, equipment after the higher heat treatment of precision, meets thorium base fused salt primary tank and reactor core
The manufacture requirement of shroud, extends service life of equipment.
Detailed description of the invention
Fig. 1 is thorium base fused salt primary tank and core shroud heat treatment parameter curve graph；
Fig. 2 is thorium base fused salt primary tank and core shroud sketch map；
Fig. 3 is thorium base fused salt primary tank heat treatment mode figure；
Fig. 4 is thorium base fused salt core shroud processing mode figure；
Fig. 5 is austenitic stainless steel tooling loop knot composition.
In figure: 1 lower head, 2 lower shells, 3 upper shells, 4 upper flanges, 5 reinforcing rings, shroud, 7 lower shrouds, 8 shroud bottoms on 6
Board group part, 9 bottom plates, 10 partitions, 11 first supporting blocks, 12 first tooling circles, 13 second tooling circles, 14 second supporting blocks, in 15
Portion's component lacing wire, 16 third tooling circles, 17 third supporting blocks, 18 the 4th tooling circles, 19 the 4th supporting blocks, 20 flowing lumens, 21
Five supporting blocks, 22 the 5th tooling circles, 23 steel pipes, 24 corner braces, 25 pressing rings, 26 isolation rings, 27 isolation boards.
Specific embodiment
In order to make the objectives, technical solutions, and advantages of the present invention clearer, below in conjunction with specific embodiment, to this
Invention is further elaborated.It should be appreciated that the specific embodiments described herein are merely illustrative of the present invention, not
For limiting the present invention.
Embodiment 1
Method of the invention is described in detail in thorium base fused salt primary tank and core shroud example with reference to the accompanying drawing:
Example thorium base fused salt primary tank in attached drawing mainly includes lower head 1, lower shell 2, upper shell 3 and 4 groups of upper flange
At；Core shroud mainly includes that upper reinforcing rings 5, upper shroud 6, lower shroud 7 and shroud bottom deck assembly 8 form.
The application is to prevent equipment in heat treatment process from dimension overproof deformation occurs, and saves UNS N10003 tooling material,
Reduce the inside and outside temperature gradient of container in heat treatment process, spy invents following heat-treatment technology method and technological means, specifically such as
Under:
Primary tank annealing device mainly includes bottom plate 9, partition 10, the first supporting block 11, the first tooling circle 12, the second work
The 13, second supporting block 14 of dress circle, internal component lacing wire 15, third tooling circle 16, third supporting block 17, the 4th tooling circle 18, the
Four supporting blocks 19, flowing lumen 20.Primary tank is heat-treated using vertical structure；
Bottom plate 9 uses carbon steel or low alloy steel slab, is placed horizontally on the furnace body bearing point in furnace, provides primary tank and put
Horizontalization face；Partition 10 uses austenitic stainless steel thin plate, isolation bottom plate 9 and primary tank upper flange 4, prevents the iron ion of bottom plate 9
Pollute primary tank upper flange 4；First supporting block 11 uses N10003 material, quantity 3, circumferential to be uniformly spot welded on lower shell 2,
Supporting point as the first tooling circle 12 prevents bracing ring 12 in heat treatment process from falling, is detached from commitment positions；First tooling circle
12 use austenitic stainless steel, specific constructive form such as attached drawing, and the first tooling circle 12 is horizontally placed at forging pipe A2, while preventing heat
The orientation that pipe A2 is forged in treatment process deforms；Second tooling circle 13 uses austenitic stainless steel, and position is close in lower shell 2
On the internal component in portion, the heat-treatment distortion of internal component is prevented, while circumferential with the second supporting block of 3 N10003 materials 14
It is uniformly spot welded on lower shell 2, and is adjacent to the second tooling circle 13, prevent the second tooling circle 13 in heat treatment process from falling, be detached from
Commitment positions；Internal component lacing wire 15 using N10003 material make, lacing wire both ends respectively with the side wall of lower shell 2 and inside structure
The surface of part, 13 collective effect of internal component lacing wire 15 and the second tooling circle prevent the angle of internal component in heat treatment process from becoming
Shape influences its flatness；Austenite third tooling circle 16, N10003 material third supporting block 17 by the same manner spot welding arrangement with
It forges on the upside of pipe A1 nozzle, third tooling circle 16 and the first tooling circle 12 are on the basis of forging pipe A1, upper and lower two sides symmetry arrangement；Ovshinsky
Spot welding is mounted at forging pipe A3 in the same manner for the 4th tooling circle 18 of body, the 4th supporting block 19 of N10003 material, simultaneously
Prevent the orientation for forging pipe A3 in heat treatment process from deforming；
Hole is opened on bottom plate 9 and partition 10, at this point, through-hole and forging pipe A1, forging pipe A2, forging pipe A3 form hot-air circulation
Chamber 20, the circulation for hot-air in heat treatment process is more smooth, reduces primary tank internal and external temperature gradient, makes the temperature of heat treatment
Uniformity is more preferable；
First tooling circle 12, the second tooling circle 13, third tooling circle 16, the 4th tooling circle 18 exist with primary tank cylinder inboard wall
Circumferencial direction reserves the gap of 1mm, is used as rate of deformation and buffers surplus；
First supporting block 11, the second supporting block 14, internal component lacing wire 15, third supporting block 17, the 4th supporting block 19 are
It needs directly to weld with primary tank, therefore uses N10003 material, prevent the dilution of primary tank material；Remaining multimaterial component not with master
It is welded between container；
Carbon steel or low alloy steel component is not direct to be contacted with primary tank, between be all made of austenitic stainless steel multimaterial component
Isolation.
Core shroud annealing device mainly includes bottom plate 9, partition 10, the 5th supporting block 21, the 5th tooling circle 22, steel pipe
23, corner brace 24, pressing ring 25, isolation ring 26, isolation board 27.Core shroud is heat-treated using vertical structure；
Bottom plate 9 and partition 10 are placed horizontally on the furnace body bearing point in furnace, provide core shroud holding plane and every
From effect；At the open at both ends of upper shroud 6, arrange two groups of the 5th tooling circles 22 of austenitic stainless steel, two groups of austenites not
The 5th supporting block 21 of 3 N10003 materials is respectively arranged below rust the 5th tooling circle 22 of steel, the 5th supporting block 21 is circumferential uniformly distributed
It is spot welded to shroud inner wall, prevents from falling in 22 heat treatment process of the 5th tooling circle；Intersect vertical welding on the 5th tooling circle 22
Two groups of austenite stainless steels 23 are connect, the 5th tooling circle 22 of rigid constraint is played；
At the open at both ends of lower shroud 7, arrange two groups of the 5th tooling circles 22 of austenitic stainless steel, two groups of austenites not
The 5th supporting block 21 of 3 N10003 materials is respectively arranged below rust the 5th tooling circle 22 of steel, the 5th supporting block 21 is circumferential uniformly distributed
It is spot welded to lower shroud inner wall, prevents from falling in 22 heat treatment process of the 5th tooling circle；Intersect vertical welding on the 5th tooling circle 22
Two groups of austenite stainless steels 23 are connect, the 5th tooling circle 22 of rigid constraint is played；
Bottom deck assembly 8 is placed horizontally on austenitic stainless steel isolation board 27, the iron contamination of carbon steel bottom plate 9 is prevented
Austenitic stainless steel isolation ring 26 is placed horizontally at 8 surface of bottom deck assembly, the pressed thickness above isolation ring 26 by bottom deck assembly 8
Plate carbon steel or low alloy steel pressing ring 25, carbon steel or low alloy steel corner brace 24 is buckled on pressing ring 25, and the both ends of corner brace 24 are distinguished
It is welded in pressing ring 25, bottom plate 9, makes bottom deck assembly 8 is smooth to adhere on stainless steel isolation board 27, prevent heat treatment process indsole
The lower plate of board group part 8 deforms.21 cloth of the 5th supporting block of the 5th tooling circle 22 of austenitic stainless steel and N10003 material
It is placed in the suitable for reading of bottom deck assembly 8, prevents port contraction distortion.
5th tooling circle 22 reserves the gap of 1mm with core shroud inner wall in circumferencial direction, is used as more than rate of deformation buffering
Amount；
5th supporting block 21 needs directly to weld with core shroud, therefore uses N10003 material, prevents core shroud material
Dilution；Remaining multimaterial component does not weld between core shroud；
Carbon steel or low alloy steel component is not direct to be contacted with core shroud, between be all made of austenite stainless steel material portion
Part isolation.
After the completion of equipment placement and tooling arrangement, furnace can be entered and carry out heating heat treatment.
To electric furnace electrified regulation, equipment is heat-treated by the way of slow heating.Equipment room temperature adds into furnace
Heat heating, when temperature rises to the heating rate of 400 DEG C of control heating, in the heating rate range heating of≤55 DEG C/h, until temperature
Reach 760~790 DEG C, into holding stage, keeps the temperature 360~380min.Herein heat up heating process in because heating rate compared with
Slowly, heat can be gentler by conduction inside outer lateral equipment, and since the ontology forging nozzle diameter of equipment is smaller, reverse buckling type places heat
It is unsmooth to handle hot-air circulation, therefore above devises stream of hot air cavity, causes hot-air more suitable in the inside and outside circulation of equipment
Freely, in conjunction with the inside and outside temperature gradient of equipment in reduction heat treatment process by the way of slow heating, is more facilitated in this way, make
Heat treatment reaches better effect.Equally cool down by the cooling velocity of≤55 DEG C/h after heat preservation, until temperature is down to
400 DEG C, heat treatment cycle curve is as shown in Fig. 1.
Using a kind of thorium base fused salt primary tank of the invention and the heat treatment method of core shroud, equipment heat can effectively ensure that
The required precision of change in size in treatment process reduces heat treatment cost, obtain function admirable, quality be stable, precision compared with
Equipment after high heat treatment meets the manufacture requirement of thorium base fused salt primary tank and core shroud, extends service life of equipment.
The foregoing is only a preferred embodiment of the present invention, but scope of protection of the present invention is not limited thereto,
Anyone skilled in the art in the technical scope disclosed by the present invention, according to the technique and scheme of the present invention and its
Inventive concept is subject to equivalent substitution or change, should be covered by the protection scope of the present invention.
Claims (8)
1. the heat treatment method of a kind of thorium base fused salt primary tank and core shroud, thorium base fused salt primary tank mainly include lower head,
Lower shell, upper shell and upper flange composition, core shroud mainly includes upper reinforcing rings, upper shroud, lower shroud and shroud bottom plate
Component composition, primary tank annealing device mainly include bottom plate, partition, the first supporting block, the first tooling circle, the second tooling circle,
Second supporting block, internal component lacing wire, third tooling circle, third supporting block, the 4th tooling circle, the 4th supporting block, flowing lumen, heap
Core shroud annealing device mainly includes bottom plate, partition, the 5th supporting block, the 5th tooling circle, steel pipe, corner brace, pressing ring, isolation
Ring, isolation board, it is characterised in that: the heat treatment method of the thorium base fused salt primary tank and core shroud includes the following steps:
S1: the heat treatment of primary tank, primary tank are heat-treated using vertical structure, and bottom plate is thick using carbon steel or low alloy steel
Plate is placed horizontally on the furnace body bearing point in furnace, provides primary tank holding plane；Partition uses austenitic stainless steel thin plate,
Bottom plate and primary tank upper flange is isolated, prevents the iron contamination primary tank upper flange of bottom plate, the first supporting block uses N10003
Material, quantity 3, circumferential to be uniformly spot welded on lower shell, the supporting point as the first tooling circle prevent in heat treatment process the
One tooling circle falls, and is detached from commitment positions, and the first tooling circle uses austenitic stainless steel；Second tooling circle uses austenite stainless
Steel, position are close on the internal component inside lower shell, prevent the heat-treatment distortion of internal component, while with 3 N10003 materials
Second supporting block of matter is circumferentially uniformly spot welded on lower shell, and is adjacent to the second tooling circle, prevents the second work in heat treatment process
Dress circle fall, be detached from commitment positions, internal component lacing wire using N10003 material production, internal component lacing wire respectively with lower shell
Side wall and internal component surface firm welding, internal component lacing wire and the second tooling circle collective effect prevent heat treated
The angular deformation of internal component in journey influences its flatness, and austenite third tooling circle, N10003 material third supporting block are by same
Mode spot welding is arranged on the upside of forging pipe A1 nozzle, and third tooling circle and the first tooling circle are on the basis of forging pipe A1, upper and lower two sides pair
Claim arrangement, spot welding is mounted on forging pipe A3 in the same manner for the 4th tooling circle of austenite, the 4th supporting block of N10003 material
Place, while preventing the orientation for forging pipe A3 in heat treatment process from deforming, opens hole on bottom plate and partition, at this point, through-hole with
It forges pipe A1, forging pipe A2, forging pipe A3 and forms stream of hot air cavity, the circulation for hot-air in heat treatment process is more smooth, reduces
Primary tank internal and external temperature gradient keeps the temperature uniformity of heat treatment more preferable；
S2: the heat treatment of core shroud, core shroud are heat-treated using vertical structure, and bottom plate and partition are placed horizontally at furnace
On interior furnace body bearing point, the holding plane and isolation effect of core shroud are provided；At the open at both ends of upper shroud, arrangement two
Group the 5th tooling circle of austenitic stainless steel, is respectively arranged 3 N10003 materials below two groups of the 5th tooling circles of austenitic stainless steel
5th supporting block of matter, the 5th supporting block are circumferentially uniformly spot welded to shroud inner wall, prevent in the 5th tooling circle heat treatment process
It falls；Intersect two groups of austenite stainless steels of vertical welding on the 5th tooling circle, plays the 5th tooling circle of rigid constraint；Under
At the open at both ends of shroud, two groups of the 5th tooling circles of austenitic stainless steel are arranged, in two groups of the 5th tooling circles of austenitic stainless steel
Lower section is respectively arranged the 5th supporting block of 3 N10003 materials, and the 5th supporting block is circumferentially uniformly spot welded to shroud inner wall, prevents
It falls in 5th tooling circle heat treatment process；Intersect two groups of austenite stainless steels of vertical welding on the 5th tooling circle, plays rigidity about
The effect of the 5th tooling circle of beam；Bottom deck assembly is placed horizontally on austenitic stainless steel isolation board, the iron of carbon steel bottom plate is prevented
Austenitic stainless steel isolation ring is placed horizontally at bottom deck assembly surface by ionic soil bottom deck assembly, pressed above isolation ring
Slab carbon steel or low alloy steel pressing ring, carbon steel or low alloy steel corner brace are buckled on pressing ring, by the both ends of corner brace respectively with pressing ring,
Bottom plate welds, and makes bottom deck assembly is smooth to adhere on stainless steel isolation board, prevents the lower flat of heat treatment process insole board component
Plate deforms, and the 5th supporting block of the 5th tooling circle of austenitic stainless steel and N10003 material is arranged in the upper of bottom deck assembly
Mouthful, prevent port contraction distortion from can enter furnace after the completion of equipment placement and tooling arrangement and carrying out heating heat treatment.
2. the heat treatment method of a kind of thorium base fused salt primary tank and core shroud, it is characterised in that: the first tooling circle in the S1,
Second tooling circle, third tooling circle, the 4th tooling circle and primary tank cylinder inboard wall reserve the gap of 1mm in circumferencial direction, are used as
Rate of deformation buffers surplus.
3. the heat treatment method of a kind of thorium base fused salt primary tank and core shroud, it is characterised in that: the first supporting block in the S1,
Second supporting block, internal component lacing wire, third supporting block, the 4th supporting block are both needed to directly weld with primary tank, therefore use
N10003 material prevents the dilution of primary tank material；Remaining multimaterial component does not weld between primary tank.
4. the heat treatment method of a kind of thorium base fused salt primary tank and core shroud, it is characterised in that: the S1 medium carbon steel or low conjunction
Golden steel part is not direct to be contacted with primary tank, between be all made of austenitic stainless steel multimaterial component isolation.
5. the heat treatment method of a kind of thorium base fused salt primary tank and core shroud, it is characterised in that: the 5th tooling circle in the S2
The gap of 1mm is reserved in circumferencial direction with core shroud inner wall, is used as rate of deformation and buffers surplus.
6. the heat treatment method of a kind of thorium base fused salt primary tank and core shroud, it is characterised in that: the 5th supporting block in the S2
It needs directly to weld with core shroud, therefore uses N10003 material, prevent the dilution of core shroud material, remaining multimaterial component is not
It is welded between core shroud.
7. the heat treatment method of a kind of thorium base fused salt primary tank and core shroud, it is characterised in that: the S2 medium carbon steel or low conjunction
Golden steel part is not direct to be contacted with core shroud, between be all made of austenitic stainless steel multimaterial component isolation.
8. the heat treatment method of a kind of thorium base fused salt primary tank and core shroud, it is characterised in that: use 400 DEG C or more ascending, descendings
Warm rate≤55 DEG C/h, 760~790 DEG C of holding temperature, the heat treatment process parameter of heat preservation 360~380min of duration carries out size
Stabilizing Heat Treatment.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811425414.3A CN109306402B (en) | 2018-11-27 | 2018-11-27 | Heat treatment method for thorium-based molten salt main container and reactor core shroud |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811425414.3A CN109306402B (en) | 2018-11-27 | 2018-11-27 | Heat treatment method for thorium-based molten salt main container and reactor core shroud |
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| CN109306402B CN109306402B (en) | 2020-11-03 |
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