CN106623487B - The preparation method of zirconium alloy element box - Google Patents
The preparation method of zirconium alloy element box Download PDFInfo
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- CN106623487B CN106623487B CN201611145910.4A CN201611145910A CN106623487B CN 106623487 B CN106623487 B CN 106623487B CN 201611145910 A CN201611145910 A CN 201611145910A CN 106623487 B CN106623487 B CN 106623487B
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- zirconium
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- square tube
- orthopedic
- mold
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21C—MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES OR PROFILES, OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
- B21C37/00—Manufacture of metal sheets, bars, wire, tubes or like semi-manufactured products, not otherwise provided for; Manufacture of tubes of special shape
- B21C37/06—Manufacture of metal sheets, bars, wire, tubes or like semi-manufactured products, not otherwise provided for; Manufacture of tubes of special shape of tubes or metal hoses; Combined procedures for making tubes, e.g. for making multi-wall tubes
- B21C37/08—Making tubes with welded or soldered seams
- B21C37/0803—Making tubes with welded or soldered seams the tubes having a special shape, e.g. polygonal tubes
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D3/00—Straightening or restoring form of metal rods, metal tubes, metal profiles, or specific articles made therefrom, whether or not in combination with sheet metal parts
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23P—METAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
- B23P15/00—Making specific metal objects by operations not covered by a single other subclass or a group in this subclass
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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
- C22F1/16—Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working of other metals or alloys based thereon
- C22F1/18—High-melting or refractory metals or alloys based thereon
- C22F1/186—High-melting or refractory metals or alloys based thereon of zirconium or alloys based thereon
Abstract
The present invention relates to a kind of preparation methods of zirconium alloy element box, including：Zirconium square tube is provided, has in the zirconium square tube and waits for orthopedic position, it is described to wait for that orthopedic position has original dimension and target size；According to the original dimension and the target size, total deformation quantity is determined；Determine orthopedic heat treatment number, the orthopedic heat treatment number at least 2 times；According to total deformation quantity and the orthopedic heat treatment number, the single deformation quantity of the zirconium square tube orthopedic heat treatment every time is determined；According to the original dimension and the single deformation quantity, a kind of mold of size is provided for orthopedic heat treatment every time, the coefficient of thermal expansion of the mold materials is more than the coefficient of thermal expansion of the zirconium square tube material under the same terms；And the mold is packed into inside the zirconium square tube in each orthopedic heat treatment using the mold of correspondingly-sized according to the ascending sequence of the size of the mold, at least 2 orthopedic heat treatment described in progress.Deformation is relatively slow, and uniform force is stablized.
Description
Technical field
The present invention relates to technical fields of mechanical processing, more particularly to a kind of preparation method of zirconium alloy element box.
Background technology
Zirconium alloy element box is referred to as " zirconium box " or " subassembly wrapper " critical piece in low temp fuel heap and boiling-water reactor.Zirconium
Box can protect fuel bundle, and constitute fuel assembly coolant channel；And on reactor core display, between every 4 box fuel assembly
Wide water gap form 1 control rod channel.In order to ensure that fuel assembly is smoothly inserted into zirconium box and control rod in reactor
It can move up and down freely in the case of various in the full phase in longevity, it is ensured that the safety of reactor, surface quality, the size of zirconium box
Precision is required for strict requirements.
In the world there are mainly two types of the preparation methods of zirconium box, as shown in the left sides Fig. 5, a kind of method includes plate-circular pipe blank-weldering
It connects-detects a flaw-cold rolling-rolling is pulled out-and be heat-treated several steps, as shown in the right sides Fig. 5, another method includes plate-clod wash-welding-weldering
Seam handles-is heat-treated several steps.For the preparation of Tsinghua University's low temperature heap fuel assembly zirconium box, China scientific research personnel also carries out
A large amount of development work.Use Roller die stretching technique by the plate of precompressed squarely using core print in patent ZL 89107625.5
The coiling welded pipe of material is drawn into square tube, and principle is the same as the left sides Fig. 5；In patent CN101905405 B, the molding of clod wash-welding is used
Method, principle is the same as the right sides Fig. 5.
In the manufacturing process of zirconium box, the most key step is last heat treatment, i.e., orthopedic heat treatment, and the orthopedic heat
Treatment process is again the shared process of above two method, is extremely closed to the precision of finished product zirconium box so controlling orthopedic heat treatment procedure
It is important.The precision for the zirconium box that current orthopedic heat treatment method produces, the especially geometric tolerance of zirconium box and 4 rounded corner rulers
Very little not to be well positioned to meet design requirement, there is an urgent need for propose new heat treatment process.
Invention content
Based on this, it is necessary to a kind of preparation method of zirconium box is provided, it is not high to solve current zirconium box precision, geometric tolerance and
The problem of 4 fillet sizes cannot meet design requirement very well.
A kind of preparation method of zirconium alloy element box, includes the following steps：Zirconium square tube is provided, has in the zirconium square tube and waits for
Orthopedic position, it is described to wait for that orthopedic position has original dimension and target size；According to the original dimension and the target ruler
It is very little, determine total deformation quantity；Determine orthopedic heat treatment number, the orthopedic heat treatment number at least 2 times；According to total deformation quantity
And the orthopedic heat treatment number, determine the single deformation quantity of the zirconium square tube orthopedic heat treatment every time；According to the initial ruler
The very little and described single deformation quantity provides a kind of mold of size, the thermal expansion system of the mold materials for orthopedic heat treatment every time
Number is more than the coefficient of thermal expansion of the zirconium square tube material under the same terms；And ascending suitable of size according to the mold
The mold is packed into inside the zirconium square tube by sequence in each orthopedic heat treatment using the mold of correspondingly-sized, is carried out
At least 2 orthopedic heat treatment.
The orthopedic heat treatment number is 2 times to 5 times in one of the embodiments,.
The size of the mold used in each orthopedic heat treatment is equal to described in one of the embodiments,
Size of the zirconium square tube inner surface before this orthopedic heat treatment.
The dimension difference of the ascending two neighboring mold is equal to the single deformation in one of the embodiments,
Amount.
The temperature of the orthopedic heat treatment is identical in one of the embodiments, or reduces successively.
The single deformation quantity is equal in one of the embodiments, is sequentially increased or is sequentially reduced.
The mold is hollow four square tube of fillet in one of the embodiments, or the mold includes the four of unfilled corner
Square plug and four cylinders positioned at unfilled corner mating with the cubic plug of the unfilled corner.
The step of offer zirconium square tube further comprises in one of the embodiments,：Zirconium plate blanking；It is welded into circle
Pipe；Weld seam processing；Precompressed or rolling squarely.
The step of offer zirconium square tube further comprises in one of the embodiments,：Zirconium plate blanking；Take two zirconium plates
It is bent into square groove respectively；Two square grooves are docked, solder joint.
The mold materials are austenitic stainless steel in one of the embodiments,.
The mold and the zirconium square tube are isometric in one of the embodiments,.
The preparation method of zirconium box in the present invention carries out at least 2 orthopedic heat treatment, by one using at least two molds
Bigger total deformation quantity splits into the summation of relatively small multiple single deformation quantities.When orthopedic heat treatment, deformation process becomes
Must be relatively slow, stress is evenly stablized, and the dimensional tolerance of zirconium box and geometric tolerance is made to have higher precision, the zirconium manufactured
Box good stability of the dimension can better meet design requirement, it is ensured that the safety of nuclear industry production.
Description of the drawings
Fig. 1 is the preparation method flow chart of the zirconium box of the embodiment of the present invention；
Fig. 2 is the structural schematic diagram of the zirconium box of the embodiment of the present invention；
Fig. 3 be cubic plug in the embodiment of the present invention using mold unfilled corner and with the cubic plug of unfilled corner is mating is located at
The orthopedic heat treatment schematic diagram of four cylinders of unfilled corner；
Fig. 4 is the orthopedic heat treatment schematic diagram that hollow four square tube of die corner is utilized in the embodiment of the present invention；
Fig. 5 is the flow diagram of two kinds of manufacturing methods of zirconium box.
Wherein,
Zirconium square tube -10；
The cubic plug -22 of unfilled corner；
Cylinder -24；
Hollow four square tube -30 of fillet；
Zirconium box -40.
Specific implementation mode
Below with reference to the accompanying drawings and in conjunction with specific implementation mode the present invention is described in detail.
It please referring to Fig.1 to Fig.3, the present invention provides a kind of preparation method of zirconium alloy element box (hereinafter referred to as " zirconium box "),
Including：
S10, provides zirconium square tube 10, has in zirconium square tube 10 and waits for orthopedic position, wait for orthopedic position have original dimension and
Target size；
S20 determines total deformation quantity according to original dimension and target size；
S30 determines orthopedic heat treatment number, orthopedic heat treatment number at least 2 times；
S40 determines the single deformation of each orthopedic heat treatment of zirconium square tube 10 according to total deformation quantity and orthopedic heat treatment number
Amount；
S50 provides a kind of mold of size, mold according to original dimension and single deformation quantity for orthopedic heat treatment every time
The coefficient of thermal expansion of material is more than the coefficient of thermal expansion of 10 material of zirconium square tube under the same terms；And
S60 uses the mould of correspondingly-sized in each orthopedic heat treatment according to the sequence that the size of mold is ascending
Mold is packed into inside zirconium square tube 10 by tool, carries out at least 2 orthopedic heat treatment.
Orthopedic heat treatment at least twice is carried out by using at least two molds, zirconium square tube 10 is carried out a small amount of multiple
One bigger total deformation quantity is split into the summation of relatively small multiple single deformation quantities by orthopedic heat treatment.Orthopedic heat
When processing, deformation process becomes relatively slowly, and stress is evenly stablized, and the dimensional tolerance and geometric tolerance of the zirconium box 40 of finished product are made
With higher precision, 40 good stability of the dimension of zirconium box manufactured can better meet design requirement, it is ensured that nuclear industry is given birth to
The safety of production.
In the step S10, the zirconium square tube 10 provided can directly buy existing zirconium square tube according to actual needs
10, can also be to be prepared by a preparation method.
Step S10 includes in one of the embodiments,：
S11, zirconium plate blanking, zirconium plate have scheduled thickness, roughness and mechanical performance；
Zirconium coiled sheet is welded into pipe by S12；
S13 is smoothed coiling welded weld seam；
S14 carries out coating and lubrication to pipe；
S15, by pipe precompressed squarely pipe；
S16 stretches rectangular tube, obtains zirconium square tube 10.
Step S10 includes in one of the embodiments,：
S11, zirconium plate blanking, zirconium plate have scheduled thickness, roughness and mechanical performance；
Zirconium coiled sheet is welded into zirconium pipe by S12；
Zirconium pipe Direct Rolling Cheng Fanghang is managed, obtains zirconium square tube 10 by S13.
Step S10 includes in one of the embodiments,：
S11, zirconium plate blanking, zirconium plate have scheduled thickness, roughness and mechanical performance；
S12 takes two zirconium plates to be bent into square groove respectively；
S13, two square grooves are docked, and solder joint obtains zirconium square tube 10.
In step slo, wait for that orthopedic position may include one or more of 4 fillets in zirconium square tube 10, it can also
Include the side wall of zirconium square tube 10.During the radius of fillet and section square chi of zirconium square tube 10 are very little in original dimension, including zirconium square tube 10
One or more.Target size is equal to the size of finished product zirconium box 40, including section of the radius of fillet and zirconium box 40 in zirconium box 40
One or more of square chi cun.
In step S20, total deformation quantity is the difference between target size and original dimension.
In step s 30, orthopedic heat treatment number is preferably 2 times to 5 times, more preferably 2 times to 3 times.
In step s 40, the single deformation quantity of orthopedic heat treatment can be the same or different every time, can gradually increase
Greatly, it is gradually reduced, the either first increases and then decreases that remains unchanged or first reduce increases afterwards, or increases, reduces and maintain
It is constant alternately.The summation that each single deformation quantity is added is equal to total deformation quantity.Preferably, the temperature of orthopedic heat treatment is successively
It reduces, corresponding single deformation quantity remains unchanged or reduces successively.It is furthermore preferred that the temperature with orthopedic heat treatment drops successively
Low, single deformation quantity is sequentially reduced.On the basis of a small amount of repeatedly orthopedic heat treatment, first passing through larger single deformation quantity makes zirconium
Square tube 10 wait for orthopedic position with faster speed close to target size, when then reaching near target size, by single deformation quantity
Reduce, so that zirconium square tube 10 is waited for that the size of orthopedic position is gradually close to target size with more accurate size.When early period use compared with
The number that orthopedic heat treatment can be suitably reduced when big single deformation quantity, saves the time, saves production cost, at the same the later stage compared with
Small single deformation quantity can more be accurately controlled the deformation of zirconium square tube 10, finally make produced finished product zirconium box 40
Precision higher, meet production requirement.
The coefficient of thermal expansion of mold materials is more than the coefficient of thermal expansion of 10 material of zirconium square tube under the same terms.Thermal expansion amount etc.
The size three of the coefficient of thermal expansion of material and the preceding heat treatment object of this heat treatment under heat treatment temperature, the heat treatment temperature
Between product.Mold is located inside zirconium square tube 10 in orthopedic heat treatment process, so zirconium square tube 10 can be expanded by mold
After active force causes non-reversible deformation, heat treatment to terminate cooling, mold can be restored to original dimension, and zirconium square tube 10 is opposite
Size is then increased before heat treatment, and to obtain a single deformation quantity, which is equal to heat treatment temperature, the heat
Under treatment temperature before the difference of the coefficient of thermal expansion of 10 material of mold materials and zirconium square tube and this heat treatment zirconium square tube 10 size
Product between three.
In step s 50, the size of the mold used in each orthopedic heat treatment is approximately equal to 10 inner surface of zirconium square tube and exists
Size before this orthopedic heat treatment, mold and zirconium square tube 10 are isometric.The ruler of the mold 1 provided when orthopedic heat treatment for the first time
The original dimension of the inner surface of the very little zirconium square tube 10 that offer is provided.The size of the mold 2 used when second of orthopedic heat treatment
It is approximately equal to the sum of the single deformation quantity of the size and zirconium square tube 10 when orthopedic heat treatment for the first time of mold 1.Used mould later
The size computing method of tool and so on.Size and the required precision for accurately calculating mold, process orthopedic mold.The size of mold
Precision and surface smoothness are not less than finished product zirconium box 40.After each orthopedic heat treatment, mold that this is used is from zirconium square tube 10
The mold of interior taking-up, taking-up may be reused in producing next time.
Referring to Fig. 3, in step s 50, orthopedic heat treatment provides every time mold be unfilled corner cubic plug 22 and with
Mating four cylinders 24 positioned at unfilled corner of the cubic plug 22 of unfilled corner.Mold materials are that coefficient of thermal expansion is more than under the same terms
The non-core of 10 material of zirconium square tube disables material, preferably austenitic stainless steel.The cubic plug 22 of unfilled corner and the four directions with unfilled corner
The material identical of mating four cylinders 24 positioned at unfilled corner of plug 22.
Referring to Fig. 4, in step s 50, orthopedic heat treatment provides every time mold is hollow four square tube of fillet 30.Mold
Material is the non-core disabling material that coefficient of thermal expansion is more than 10 material of zirconium square tube under the same terms, preferably austenitic stainless steel.
Compared with solid mould, during orthopedic heat treatment, hollow four square tube 30 is because of internal hollow structure, entire mold heating
Speed faster, is heated evenly, deformation process more mitigates, and is easy to control, and is conducive to the dimensional tolerance and morpheme of finished product zirconium box 40
The raising of tolerance grade.
In step S60, orthopedic be heat-treated is related to different types of technological parameter, including heat treatment temperature, soaking time,
Heating and cooling system etc..Each orthopedic heat treatment is independent from each other, and technique can be the same or different, can be according to this
Before the difference of the coefficient of thermal expansion of 10 material of single deformation quantity, mold materials and zirconium square tube of secondary orthopedic heat treatment and this heat treatment
The size of zirconium square tube 10 is determined.The temperature of orthopedic heat treatment is identical or reduces successively, is preferably 400 DEG C to 600 DEG C；It protects
The warm time is preferably 1h to 5h；Rate of rise in temperature preferably at the uniform velocity rises, per minute to rise about 10 DEG C to 20 DEG C；Cooling system
Preferably natural cooling, process orthopedic heat treatment at least twice, obtains high-precision zirconium square tube 10.Ascending two neighboring mould
The dimension difference of tool is equal to single deformation quantity.
Further comprise subsequent processing steps S70：
S71 intercepts the zirconium square tube 10 of certain length according to the requirement for the finished product zirconium box 40 to be produced；
S72 carries out surface treatment and pickling to zirconium square tube 10；
S73, deionized water are rinsed；
S74 is dried up with oil-free drying compressed air, obtains the high-precision zirconium box 40 of the present invention.
Embodiment 1
Preparation length is 1600mm, and it is 100 × 100mm to cut square chi cun, and wall thickness 2mm, radius of corner r are the high-precision of 6mm
Zirconium box 40.Specifically include following steps：
S10 provides zirconium square tube 10, including：
S11, it is 2.2~2.3mm to choose thickness δ, and the mechanical performance of the zirconium plate of roughness Ra≤3.2 μm, zirconium plate meets table 1
Technology requirement, be accurately cut into long 1800mm, the zirconium plate of wide 400.5 ± 0.05mm, it is desirable that four sides of zirconium plate are smooth, adjacent edge
Perpendicularity deviation ＜ 0.3mm, the depth of parallelism ＜ 0.3mm of relative edge；
S12, zirconium coiled sheet are welded into pipe, it is desirable that control the stomata of weld seam, are mingled with, do not allow the presence of not fusion area, surface is not
It can aoxidize, weld seam wants smooth；
S13 handles weld seam, the polish overlap being higher by and cleaning；
S14 carries out coating and lubrication to the zirconium pipe surfaces externally and internally after drying；
Zirconium pipe is carried out the precompressed of both direction by S15, is formed square contour, is made the middle part of commissure Mr. Yu's one side；
S16, transition stretching and production tube stretch, and using different length core prints, shunting is secondary by the zirconium with square contour
Pipe is drawn into square tube, obtains zirconium square tube 10.
S20, total deformation quantity be need the size of zirconium box 40 to be prepared and the step S100 zirconium square tubes 10 provided wait for it is orthopedic
The difference of the original dimension of position.
S30, using 2 orthopedic heat treatment.
S40 determines the single deformation of heat treatment orthopedic twice respectively according to total deformation quantity and the number of orthopedic heat treatment
Amount, the sum of 2 single deformation quantities are equal to total deformation quantity of this orthopedic heat treatment.
S50, provides 2 molds, and the type of mold is the cubic plug 22 of unfilled corner and mating with the cubic plug 22 of unfilled corner
Four cylinders 24 positioned at unfilled corner, material 1Cr18Ni9Ti.Size and the required precision for calculating separately out two molds, add
Tool and mould, and according to the ascending sequence of die size, number is mold 1 and mold 2.
S60 carries out orthopedic heat treatment to zirconium square tube 10, including：
S61 fills in 1,600 DEG C of mold, vacuum degree 1.3 × 10 in zirconium square tube 10-3Pa keeps the temperature 2.5h.After natural cooling
The cubic plug 22 of unfilled corner and four cylinders 24 and zirconium square tube 10 positioned at unfilled corner mating with the cubic plug 22 of unfilled corner are taken
Go out；
S62 fills in 2,600 DEG C of mold, vacuum degree 1.3 × 10 in the zirconium square tube 10 Jing Guo 1 orthopedic heat treatment-3Pa,
Keep the temperature 2.5h.By the cubic plug 22 of unfilled corner and four positioned at unfilled corner mating with the cubic plug 22 of unfilled corner after natural cooling
Cylinder 24 and zirconium square tube 10 are taken out.
S70, subsequent processing include：
S71 intercepts the zirconium square tube 10 of certain length according to the requirement for the finished product zirconium box 40 to be produced；
S72 carries out surface treatment and pickling to zirconium square tube 10；
S73, deionized water are rinsed；
S74 is dried up with oil-free drying compressed air, obtains the high-accuracy square zirconium box 40 of the present invention.
Embodiment 2
Preparation length is 2100mm, and it is 150 × 150mm to cut square chi cun, and wall thickness 1.5mm, radius of corner r are the height of 6.5mm
The rectangular zirconium box of precision 40.Specifically include following steps：
S10 provides zirconium square tube 10, including：
S11, it is 1.7~1.8mm to choose thickness δ, and the mechanical performance of the zirconium plate of roughness Ra≤3.2 μm, zirconium plate meets table 1
Technology requirement, accurately cut long 2300mm, the zirconium plate of wide 600.5 ± 0.05mm, it is desirable that four sides of zirconium plate are smooth, adjacent edge
Perpendicularity deviation ＜ 0.3mm, the depth of parallelism ＜ 0.3mm of relative edge；
S12, zirconium coiled sheet are welded into pipe, it is desirable that control the stomata of weld seam, are mingled with, do not allow the presence of not fusion area, surface is not
It can aoxidize, weld seam wants smooth；
S13 handles weld seam, the polish overlap being higher by and cleaning；
S14, by the zirconium pipe after drying using special rolling mill Direct Rolling at square tube.
S20, total deformation quantity be need the size of zirconium box 40 to be prepared and the step S100 zirconium square tubes 10 provided wait for it is orthopedic
The difference of the original dimension of position.
S30, using 3 orthopedic heat treatment.
S40 determines the single deformation quantity of 3 orthopedic heat treatment respectively according to total deformation quantity and the number of orthopedic heat treatment,
The sum of 3 single deformation quantities are equal to total deformation quantity of this orthopedic heat treatment.
S50 provides 3 molds, and the type of mold is hollow four square tube 30 of fillet, material 0Cr18Ni10Ti.It counts respectively
Size and the required precision of 3 molds, processing mold are calculated, and according to the ascending sequence of die size, number is mold
1, mold 2 and mold 3.
S60 carries out orthopedic heat treatment to zirconium square tube 10, including：
S61 fills in 1,500 DEG C of mold, vacuum degree 1.3 × 10 in zirconium square tube 10-3Pa, soaking time 3h.Natural cooling
Hollow four square tube 30 of fillet and zirconium square tube 10 are taken out afterwards；
S62 fills in 2,500 DEG C of mold, vacuum degree 1.3 × 10 in the zirconium square tube 10 Jing Guo 1 orthopedic heat treatment-3Pa,
Keep the temperature 3h.Hollow four square tube 30 of fillet and zirconium square tube 10 are taken out after natural cooling；
S63 fills in 3,500 DEG C of mold, vacuum degree 1.3 × 10 in the zirconium square tube 10 Jing Guo 2 orthopedic heat treatment-3Pa,
Keep the temperature 3h.Hollow four square tube 30 of fillet and zirconium square tube 10 are taken out after natural cooling.
Operation later is the same as embodiment 1.
Embodiment 3
Preparation length is 2600mm, and it is 180 × 180mm to cut square chi cun, and wall thickness 2.0+0.10mm, radius of corner r are 6.5mm
High-accuracy square zirconium box 40.Specifically include following steps：
S10 provides zirconium square tube 10, including：
S11, it is 2.2~2.3mm to choose thickness δ, and the mechanical performance of the zirconium plate of roughness Ra≤3.2 μm, zirconium plate meets table 1
Technology requirement, accurately cut long 3000mm, width is two blocks of zirconium plates of 361.5 ± 0.05mm, it is desirable that four sides of zirconium plate are smooth, phase
The perpendicularity deviation ＜ 0.3mm of adjacent side, the depth of parallelism ＜ 0.3mm of relative edge；
S12 takes two zirconium plates after step S101 finish-millings, and using numerical control bender, two zirconium plates are bent into π types respectively
Square zirconium channel-shaped, the wherein precision of positioning mold lower die are ± 0.01mm, and the radius of corner of Bending punch upper mold is 6.5mm, at
The fillet radius of product zirconium box 40 is equal, and the clearance control of upper and lower intermode is between 2.0~3.0mm；
S13 docks two π word zirconium square grooves made from S102 with weld mold, using vacuum electron beam or other welding
Mode is welded；
S14 handles weld seam, the polish overlap being higher by and cleaning.
S20, total deformation quantity be the size of zirconium box 40 to be prepared and the S100 zirconium square tubes 10 provided be provided wait for orthopedic position
Original dimension difference.
S30, using 3 orthopedic heat treatment.
S40 determines the single deformation quantity of 3 orthopedic heat treatment respectively according to total deformation quantity and the number of orthopedic heat treatment,
The sum of 3 single deformation quantities are equal to total deformation quantity of this orthopedic heat treatment.
S50 provides 3 molds, and the type of mold is hollow four square tube 30 of fillet, material 0Cr18Ni10Ti.It counts respectively
Size and the required precision of 3 molds, processing mold are calculated, and according to the ascending sequence of die size, number is mold
1, mold 2 and mold 3.
S60 carries out orthopedic heat treatment to zirconium square tube 10, including：
S61 fills in 1,550 DEG C of mold, vacuum degree 1.3 × 10 in zirconium square tube 10-3Pa keeps the temperature 3h.In air after cooling
Hollow four square tube 30 of fillet and zirconium square tube 10 are taken out；
S62 fills in 2,550 DEG C of mold, vacuum degree 1.3 × 10 in the zirconium square tube 10 Jing Guo 1 orthopedic heat treatment-3Pa,
Keep the temperature 3h.Hollow four square tube 30 of fillet and zirconium square tube 10 are taken out after natural cooling；
S63 fills in 3,550 DEG C of mold, vacuum degree 1.3 × 10 in the zirconium square tube 10 Jing Guo 2 orthopedic heat treatment-3Pa,
Keep the temperature 3h.Hollow four square tube 30 of fillet and zirconium square tube 10 are taken out after natural cooling.
Operation later is the same as embodiment 1.
1 airconium alloy plates mechanical performance of table
Several embodiments of the invention above described embodiment only expresses, the description thereof is more specific and detailed, but simultaneously
Cannot the limitation to the scope of the claims of the present invention therefore be interpreted as.It should be pointed out that for those of ordinary skill in the art
For, without departing from the inventive concept of the premise, various modifications and improvements can be made, these belong to the guarantor of the present invention
Protect range.Therefore, the protection domain of patent of the present invention should be determined by the appended claims.
Claims (10)
1. a kind of preparation method of zirconium alloy element box, includes the following steps：
Zirconium square tube is provided, has in the zirconium square tube and waits for orthopedic position, it is described to wait for that orthopedic position has original dimension and target
Size；
According to the original dimension and the target size, total deformation quantity is determined；
Determine orthopedic heat treatment number, the orthopedic heat treatment number at least 2 times；
According to total deformation quantity and the orthopedic heat treatment number, the single shape of the zirconium square tube orthopedic heat treatment every time is determined
Variable；
According to the original dimension and the single deformation quantity, a kind of mold of size is provided for orthopedic heat treatment every time, it is described
The coefficient of thermal expansion of mold materials is more than the coefficient of thermal expansion of the zirconium square tube material under the same terms；And
According to the sequence that the size of the mold is ascending, the mould of correspondingly-sized is used in each orthopedic heat treatment
The mold is packed into inside the zirconium square tube by tool, at least 2 orthopedic heat treatment described in progress, the temperature of the orthopedic heat treatment
Degree reduces successively.
2. the preparation method of zirconium alloy element box according to claim 1, which is characterized in that the orthopedic heat treatment number
It is 2 times to 5 times.
3. the preparation method of zirconium alloy element box according to claim 1, which is characterized in that described at each orthopedic heat
The size of the mold used when reason is equal to size of the zirconium square tube inner surface before this orthopedic heat treatment.
4. the preparation method of zirconium alloy element box according to claim 1, which is characterized in that ascending two neighboring institute
The dimension difference for stating mold is equal to the single deformation quantity.
5. the preparation method of zirconium alloy element box according to claim 1, which is characterized in that the single deformation quantity phase
Deng, be sequentially increased or be sequentially reduced.
6. the preparation method of zirconium alloy element box according to claim 1, which is characterized in that the mold is that fillet is hollow
Four square tubes or the mold include unfilled corner cubic plug and with the cubic plug of the unfilled corner it is mating positioned at the four of unfilled corner
A cylinder.
7. the preparation method of zirconium alloy element box according to claim 1, which is characterized in that the step for providing zirconium square tube
Suddenly further comprise：
Zirconium plate blanking；
It is welded into pipe；
Weld seam processing；
Precompressed or rolling squarely.
8. the preparation method of zirconium alloy element box according to claim 1, which is characterized in that the step for providing zirconium square tube
Suddenly further comprise：
Zirconium plate blanking；
Two zirconium plates are taken to be bent into square groove respectively；
Two square grooves are docked, solder joint.
9. the preparation method of zirconium alloy element box according to claim 1, which is characterized in that the mold materials are Ovshinsky
Body stainless steel.
10. the preparation method of zirconium alloy element box according to claim 1, which is characterized in that the mold and the zirconium
Square tube is isometric.
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Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3559278A (en) * | 1967-06-06 | 1971-02-02 | Asea Ab | Method of manufacturing a hollow elongated thin-walled metallic body |
| CN1050692A (en) * | 1989-10-06 | 1991-04-17 | 西北有色金属研究院 | The manufacture method of thin-wall, square Zr-alloy pipe |
| JP2000301240A (en) * | 1999-04-15 | 2000-10-31 | Nsk Ltd | Forming method of thin wall tube body |
| JP2007275953A (en) * | 2006-04-10 | 2007-10-25 | Nippon Steel Corp | Method for producing high strength welded steel tube |
| CN101905405A (en) * | 2010-07-16 | 2010-12-08 | 国核宝钛锆业股份公司 | Welding mould and method for processing high-accuracy square zirconium alloy element box |
| CN102794334A (en) * | 2012-07-17 | 2012-11-28 | 湖北三江航天江北机械工程有限公司 | Diameter and shape precision control method of thin-walled cylinder and special tool thereof |
| CN202933981U (en) * | 2012-11-02 | 2013-05-15 | 北京京翰林模具制造有限公司 | Thermal forming die for titanium alloy sheet metal drum part |
| CN104475495A (en) * | 2014-12-19 | 2015-04-01 | 西安航天动力机械厂 | Reshaping method for barrel with diameter greater than 1 meter |
| CN105290163A (en) * | 2015-11-24 | 2016-02-03 | 哈尔滨工业大学 | Sizing method of cylindrical titanium alloy spun parts |
| CN105312367A (en) * | 2015-11-30 | 2016-02-10 | 上海电机学院 | Orthopedic device and orthopedic method for high-strength steel thin-wall annular forging piece |
| CN105463253A (en) * | 2015-12-25 | 2016-04-06 | 燕山大学 | Low-expansion-coefficient zirconium alloy and preparation method thereof |
-
2016
- 2016-12-13 CN CN201611145910.4A patent/CN106623487B/en active Active
Patent Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3559278A (en) * | 1967-06-06 | 1971-02-02 | Asea Ab | Method of manufacturing a hollow elongated thin-walled metallic body |
| CN1050692A (en) * | 1989-10-06 | 1991-04-17 | 西北有色金属研究院 | The manufacture method of thin-wall, square Zr-alloy pipe |
| JP2000301240A (en) * | 1999-04-15 | 2000-10-31 | Nsk Ltd | Forming method of thin wall tube body |
| JP2007275953A (en) * | 2006-04-10 | 2007-10-25 | Nippon Steel Corp | Method for producing high strength welded steel tube |
| CN101905405A (en) * | 2010-07-16 | 2010-12-08 | 国核宝钛锆业股份公司 | Welding mould and method for processing high-accuracy square zirconium alloy element box |
| CN102794334A (en) * | 2012-07-17 | 2012-11-28 | 湖北三江航天江北机械工程有限公司 | Diameter and shape precision control method of thin-walled cylinder and special tool thereof |
| CN202933981U (en) * | 2012-11-02 | 2013-05-15 | 北京京翰林模具制造有限公司 | Thermal forming die for titanium alloy sheet metal drum part |
| CN104475495A (en) * | 2014-12-19 | 2015-04-01 | 西安航天动力机械厂 | Reshaping method for barrel with diameter greater than 1 meter |
| CN105290163A (en) * | 2015-11-24 | 2016-02-03 | 哈尔滨工业大学 | Sizing method of cylindrical titanium alloy spun parts |
| CN105312367A (en) * | 2015-11-30 | 2016-02-10 | 上海电机学院 | Orthopedic device and orthopedic method for high-strength steel thin-wall annular forging piece |
| CN105463253A (en) * | 2015-12-25 | 2016-04-06 | 燕山大学 | Low-expansion-coefficient zirconium alloy and preparation method thereof |
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