CN1410688A - High temperature alloy spring for steam turbine steam locking and its processing method and detecting installation - Google Patents
High temperature alloy spring for steam turbine steam locking and its processing method and detecting installation Download PDFInfo
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Abstract
The column type helical spring is made from Inconal X-750 (GH4145) alloy wire. The procedures for manufacturing the spring are as following: wrapping the semi-finished product of long coil of spring: cutting the long coil to single springs; washing the springs; carrying out the solid solution heat treatment; cutting end and adjusting the pitch, and carrying out the aging heat treatment. With the tests of rigidity and permangnet deformation in high temperature being completed, the finished springs are obtained. The device for testing rigidity of the spring includes the worktable, the electric stove and dial gauge etc. Testing indicates the performances of the spring: when the working temperature at 550 degree.C, the service life > or =25000 hr. The spring is easy to be assembled in the vapor lock.
Description
Technical field
The present invention relates to a kind of spring.Specifically, the present invention relates to high temperature alloy spring and processing method and the verifying attachment that a kind of turbine steam seal is used.
Background technique
According to the knowledge of the applicant: the steam turbine of the various models of China, the spring sheet that the gland spring of parts such as the diaphragm gland of its high temperature section (about 540 ℃ of Maximum operating temperature), axle envelope generally uses the GH2132 material to make, this spring sheet is shorter working life, be not more than 5000-10000 hour average service time, promptly follow the string, cause generatine set heat efficiency to reduce, thereby become the weak link that influences the unit total quality.In the world on the subcritical 600MW steam turbine of FDAC, gland spring adopts InconelX-750 (GH4145) high-temperature alloy material, but the structure of spring is a slab organization still, exists packing assembling difficulty, and in use packing is made a concession problems such as distortion difficulty.
Summary of the invention
Purpose of the present invention is exactly in order to solve the problems referred to above that China's turbine steam seal spring exists, the claimant uses for reference the experience of the 600MW of Hitachi unit, set about from spring material and structural type two aspects, through repetition test, successfully develop China a new generation turbine steam seal with high temperature alloy spring and the processing method of this spring is provided.
Another object of the present invention is for satisfying the needs of above-mentioned packing with the high temperature alloy spring routine inspection, according to the test philosophy of general spring rate, provides the verifying attachment of a kind of turbine steam seal with high temperature alloy spring.
The objective of the invention is to realize by following technological scheme:
The turbine steam seal high temperature alloy spring, it is the column type helical spring made from InconelX-750 (GH4145) alloy silk.
Described spring is a cylindroid helicalcoil compression spring.
Make the processing method of above-mentioned packing, comprise the step of following order with high temperature alloy spring:
(1). with InconelX-750 (GH4145) alloy silk coiled long paper spring blank on plug;
(2). the spring number of total coils by the design code pattern cuts into single spring blank;
(3). clean the spring blank;
(4). carry out solution heat treatment;
(5). crop, adjustment spring pitch;
(6). carry out timeliness heat treatment;
(7). the finished product spring carries out high temperature stiffness testing and the check of high temperature permanent deformation;
(8). the antirust processing of finished product spring, packing.
Described solution heat treatment is 1000 ℃-1100 ℃ and goes into stove to the temperature processing of coming out of the stove to temperature that heating rate is 25 ℃-50 ℃/minute.
Described timeliness heat treatment is 650 ℃-750 ℃ insulation 15hr-25hr ageing treatment.
Described solution heat treatment is 1065 ℃ and goes into stove to the temperature processing of coming out of the stove to temperature that described timeliness heat treatment is 704 ℃ of insulation 20hr ageing treatment.
Above packing is to have taken all factors into consideration following factor and by repeatedly practising definite technology circuit with the processing method of high temperature alloy spring.Technology must experience: through as drawn condition → carry out solid solution+timeliness heat treatment → solid solution+timeliness condition of heat treatment, select treatment process: not exclusively heat treatment.
1, the theoretical foundation of this method is: Inconel X-750 (GH4145) [but claiming English nickel X-750 (height closes 4145)] alloy is a kind of nickel base superalloy of strengthening with Al, Ti, Nb element, and its main component that contains has elements such as Ni, Cr, Al, Ti, Nb, Fe.This material is one of widely used alloy of early-stage development in the Inconel alloy system (various component such as the fastening piece of the work of now being widely used under the high temperature, spring).Introduce the claimant on the subcritical 600MW steam turbine of Hitachi, this material is used as high temperature gland spring sheet.Because the supply of material state of the alloy wire material of Inconel X-750 (GH4145) is an as drawn condition, the helical spring of its coiling also is an as drawn condition, not that high-temperature alloy material solid solution+ageing treatment state commonly used (is annotated: for the refractory alloy that uses under the high temperature, constant for its microstructure and property is stablized when high temperature uses for a long time, its user mode generally all is solid solution+ageing treatment attitude).The spring of as drawn condition, elasticity is produced by high strength and the hardness that materials processing sclerosis back produces, and along with the rising of operating temperature, the work-hardening of material will be replied gradually, and the intensity of material and hardness will reduce gradually, thereby lose due elasticity.Therefore, the spring of as drawn condition is (the general work temperature is lower than 300 ℃) that can not at high temperature work.To must carrying out corresponding solid solution+timeliness heat treatment, with the requirement of satisfying the long-term applying working condition of spring high temperature and the rigidity value of design with Inconel X-750 (GH4145) alloy wire coiling spiral gland spring.The molten treatment process parameter of thermosetting that draws the rigidity requirement that can satisfy the design of this spring through repetition test is: go into stove to temperature for 1000 ℃-1100 ℃ and come out of the stove to temperature, 25 ℃-50 ℃/minute of heating rates; The process parameter that thermal aging is handled is: 650 ℃-750 ℃ insulation 15hr-25hr.
2, because this spring is a miniature parts, the external diameter of finished product spring is 10.5mm to the maximum, highly is 32mm to the maximum, and the maximum diameter of spring thread is 1.5mm, single work efficiency is too low, and it is more suitable to adopt the long coil spring blank of coiled to cut into the method for single spring blank again.
3, the good spring of coiling, without solution heat treatment the time, its hardness and rigidity are very high, material deformation is difficult, and it is very difficult to adjust pitch in this state, even the pitch of spring can be adjusted out, also inhomogeneous, and working strength is big, and efficient is low, also is easy to produce distortion when the solution heat treatment of carrying out subsequently.At this situation, after high temperature solid solution heat treatment, its hardness will be lower than HV200 according to high-temperature alloy material, and material deformation is easier to.Therefore, can carry out solution heat treatment earlier, adjust pitch again.
The turbine steam seal verifying attachment of high temperature alloy spring, it is to be provided with to be used to provide on horizontal table to check the temperature required electrothermal stove that adds, and is provided with in this electric furnace and passes electric furnace and worktable guide rod connected vertically; On guide rod, put tested spring, gland and measuring disk in regular turn, place counterweight on the measuring disk, thereby make the common gravity of counterweight, measuring disk and pressure cylinder satisfy the required power of spring tester; Have the dial indicator that is used for deformation displacement amount on the detection springs short transverse in measuring disk, add electrothermal stove and link to each other with the temperature control instrument of band temperature transducer.
Described guide rod links to each other with worktable by support.
Has the gap between described guide rod and the tested spring.
Has the gap between described measuring disk, gland and the guide rod.
Described temperature transducer adopts thermocouple.
Remarkable result of the present invention is: adopt incomplete heat treatment process in the processing method, the finished product sample is after " solution treatment+ageing treatment ", oxide layer is the most shallow, grain size is moderate, the effect of solid solution and ageing treatment is better, hardness is higher, and the long-term down back permanent deformation of using of spring rate value height and high temperature is little.This high temperature alloy spring is through evidence: operating temperature can be up to 550 ℃, long service life 〉=25000 hour, the packing assembling easily, in use to make a concession distortion easier for packing.The claimant has measured the high temperature rigidity of a hundreds of spring of tens heat (batch) numbers with this verifying attachment, and the data reappearance of its measuring spring rigidity is fine, illustrates that device is reasonable in design, measures accurately.This verifying attachment is a domestic initiation, adds the blank of having filled out this technical field of China.Appearance of the present invention improves whole quality level of steam turbine, and generatine set heat efficiency is improved, and has strengthened the domestic and international market competitive ability.
Description of drawings
Fig. 1 is a kind of structural representation of spring of the present invention.
Fig. 2 is a spring tester apparatus structure schematic representation of the present invention.
Embodiment
Below in conjunction with embodiment one step of effect of the present invention is described in detail.
Spring structure of the present invention is seen Fig. 1, and finished product is the cylindroid helicalcoil compression spring made from InconelX-750 (GH4145) alloy silk, also can be made into the column type helical spring of other shapes such as cylindroid helicalcoil extension spring, cylindroid helicalcoil torsion spring.
The finished product processing step in the following order of Fig. 1 shape is finished: (1). according to the design specification (spring of figure number Y47-171000A001, X300B-17300A001 and D300N-100000A-001 of spring, external diameter is respectively 9mm, 10.5mm and 10.5mm, the diameter of spring thread is respectively 1.2mm, 1.2mm and 1.5mm, and the length of plug is about 400mm) get alloy silk coiled long paper spring blank on the plug of respective diameters of respective diameters; (2). the number of turns by the design specification requirement cuts into single spring blank with long paper spring blank, gives during cutting and stays the crop surplus.(3). clean the spring blank according to a conventional method; (4). carry out solution heat treatment: soon blank is put in the stove and is heated, and about 30 ℃/minute of heating rates are gone into stove, come out of the stove to temperature to 1020 ℃-1090 ℃ (best 1065 ℃); (5). crop, adjustment pitch: both ends of the spring is cut into tack, and the number of turns behind the crop is adhered to specification; Evenly adjust the spring pitch, the spring height is adhered to specification; (6). carry out thermal aging and handle: the spring that is about to mix up pitch is put under 665 ℃-735 ℃ (best 704 ℃) temperature about insulation 20hr; (7). the spring after the thermal aging processing is put verifying attachment, adjust the working load that the check load makes it to meet design, be warming up to 537 ℃ and be incubated 10 minutes after carry out high temperature rigidity value check, and be warmed up to 537 ℃ and be incubated 72 hours after carry out the permanent deformation check.(8). with the antirust routinely processing of the spring that is up to the standards back packing.
The tested parameter of finished product spring is: 1. the set deformation volume of spring after load is cancelled; 2. spring rigidity value at high temperature.Finished product spring tester standard is: 1. spring permanent distortion amount≤2%; 2. rigidity value is within design rigidity value scope.Permanent deformation then needs after cancelling load, actual measurement spring height, with the aspect ratio of check front spring, obtain the absolute deformation amount, be scaled the relative deformation again.
Referring to Fig. 2, this verifying attachment comprises: worktable 1, electric furnace 4, guide rod 9, gland 5, measuring disk 7, counterweight 8, dial indicator 6, support 10, support 13.Support 10 is vertically fixed on the worktable 1, guide rod 9 passes the roof and 1 vertical linking to each other of worktable that adds electrothermal stove 4, (there is a hole cross bar 11 ends of support 10 by support 10 supports in the upper end of guide rod 9, the upper end of guide rod 9 is passed this hole and is fixed with screw, described hole and guide rod 9 have certain interval, guide rod 9 can be moved up and down) make it to keep stable, lower end that step 2 is arranged, tested spring 3, gland 5, measuring disk 7 are inserted in guide rod 9 in regular turn and are placed on the step 2; Can place two counterweights 8, two dial indicators 6 of following installation above the measuring disk 7, dial indicator 6 is fixed on the worktable 1 by being hinged with support 13; Gapped between gland 5, spring 3 and the guide rod 9, the roof of gland 5 and electric furnace 4 is worn between the cinclides also gapped.About the internal diameter little 1mm of the diameter of guide rod 9, to guarantee the free dilatation of spring energy than tested spring 3; About the diameter big 1mm of the internal diameter of gland 5, so that gland 5 can move up and down at guide rod 9 than guide rod 9.Electric furnace 4 links to each other with the temperature control instrument 12 of band thermocouple, by the furnace temperature of temperature control instrument 12 control electric furnaces 4.
Finished product spring tester operating process is as follows:
1, checks that can gland 5 and measuring disk 7 the easy on and off activity; Can whether dial indicator 6 installs, free movable; 2, tested spring 3 is put into the measuring position, add the load that is lower than preloading, check that can tested spring 3 free deformation; 3, with electric furnace 4 heating, be warmed up to check temperature (400～700 ℃), be incubated about 10 minutes; 4, by the regulation of tested spring 3 detail of designs, add preloading, after tested spring 3 distortion are stable, reading (reading A) on the record dial indicator 6, to increase counterweight 8 loads and be added to test load, after camber of spring is stable, the reading (reading B) on the record dial indicator 6.In checkout procedure, the temperature of electric furnace 4 remains on test temperature; 5, calculate the high temperature stiffness K of tested spring 3:
Spring rate K=(test load-preloading) ÷ (reading B-reading A)
Adopt 72 hours timeliness of technology of the present invention trial-production finished product spring high temperature and rigidity comparative trial
For at high temperature using, the checking high temperature alloy spring must carry out solid solution+aging heat treatment necessity, and check " 1065 ℃ ℃ are incubated 20 hours timeliness " can the finished product spring after the processing satisfy the requirement of detail of design to temperature solution treatment+704 of coming out of the stove through recommending the spring heat treatment process, will by figure number " Y47-17100A001 and X300B-17300A001 " coiling good through the finished product spring of solid solution+ageing treatment with do not carry out solid solution+ageing treatment, only every group of each 5 finished product spring through stress removing carry out under 537 ℃ of high temperature, after 72 hours ageing treatment, the rigidity comparative trial of the mensuration of the permanent deformation of spring and room temperature and high temperature, test conditions is by the regulation of design figure number, and test result is seen as following table 1, shown in the table 2.
From the test result of last table as can be seen: at ambient temperature, all can meet design requirement through solid solution+ageing treatment and spring without solid solution+ageing treatment.Under 537 ℃ of high temperature conditions, after spring pressed test load and load, be incubated 72 hours timeliness, produced permanent plastic deformation, followed the string without solid solution+ageing treatment spring; And pass through the spring of " 1065 ℃ to temperature come out of the stove 20 hours ageing treatment of solution treatment+704 ℃ insulation ", and only producing about distortion of about 2% after the test, and spring is still flexible, meet design requirement.The rigidity of spring also meets the regulation that designs figure number.Illustrate that this heat treatment process parameter is rationally feasible as the heat treatment process of this type high temp gland spring.
Adopt the gland spring of the figure number " Y47-17100A001, X300B-17300A001 and D300N-100000A001 " of technology trial production of the present invention, all carried out the high temperature stiffness testing with under 537 ℃ of high temperature conditions by the DB7.18.1.27-2000 standard, after spring pressed test load and load, be incubated 72 hours timeliness, the permanent deformation of check spring, all assays all meet purchase specifications and the requirement that designs figure number.Wherein: 537 ℃ of high temperature stiffness testing results' statistics is seen as following table 3, table 4 and table 5.
The trial-production spring is permanent deformation comparison test table 1 as a result after 72 hours timeliness of 537 ℃ of high temperature
| Figure number | Test temperature and condition | Spring original size mm | Test load N | Distortion mm under the test load | The size mm of test rear spring | Evaluation of result |
| Y47-171000A001 (not solid solution+ageing treatment) | Room temperature | ????30 | ??26.85 | ????7.5 | Not distortion | Qualified |
| Y47-171000A001 (solid solution+ageing treatment) | ||||||
| Y47-171000A001 (not solid solution+ageing treatment) | 537 ℃+72 hours timeliness | ????23.5 | Defective (generation permanent deformation) | |||
| Y47-171000A001 (solid solution+ageing treatment) | ????29.5 | Qualified | ||||
| X300B-173000A001 (not solid solution+ageing treatment) | Room temperature | ????28 | ??23.8 | ????9 | Not distortion | Qualified |
| X300B-173000A001 (solid solution+ageing treatment) | ||||||
| X300B-173000A001 (not solid solution+ageing treatment) | 537 ℃+72 hours timeliness | ????20.7 | Defective (generation permanent deformation) | |||
| X300B-173000A001 (solid solution+ageing treatment) | ????27.4 | Qualified | ||||
| Y47-171000A001 (solid solution+ageing treatment) | 537 ℃+72 hours timeliness | ????30 | ??26.85 | ????6 | ????29.5 | Qualified |
| X300B-173000A001 (solid solution+ageing treatment) | ????28 | ??23.8 | ????27.75 | |||
| Y47-173000A001 (solid solution+twice ageing treatment) | 537 ℃+72 hours timeliness | ????30 | ??26.85 | ????7.5 | ????29.4 | Qualified |
| X300B-173000A001 (solid solution+twice ageing treatment) | ????28 | ??23.8 | ????9 | ????27.5 |
Trial-production spring rate examination table 2
| Figure number | Test temperature and condition | Spring original size mm | Test load N | Pattern design rigidity value | The actual measurement rigidity value | The size mm of test rear spring | Evaluation of result |
| Y47-171000A001 (solid solution+ageing treatment) | Room temperature | ????30 | ?26.85 | ??—— | ?2.83～3.02 | Not distortion | Qualified |
| Y47-171000A001 (solid solution+ageing treatment) | ?537℃ | ??2.45～3.00 | ?2.68～2.82 | Not distortion | Qualified | ||
| X300B-173000A001 (solid solution+ageing treatment) | Room temperature | ????28 | ?23.8 | ??—— | ?2.10～2.25 | Not distortion | Qualified |
| X300B-173000A001 (solid solution+ageing treatment) | ?537℃ | ??1.81～2.21 | ?1.91～2.11 | Not distortion | Qualified |
The assay statistics of 537 ℃ of high temperature rigidity of the first series-produced gland spring finished product
Table 3
| Sequence number | Heat (batch) number | Figure number | The test number of packages | Assay (high temperature rigidity value) |
| ?1 | ??JX2000-001 | ????X300B-173000A001 | 10 | ?????1.94～2.11 |
| ?2 | ??JX2000-002 | ????X300B-173000A001 | 10 | ?????1.91～2.11 |
| ?3 | ??JX2000-003 | ????X300B-173000A001 | 10 | ?????1.94～2.11 |
| ?4 | ??JX2000-004 | ????X300B-173000A001 | 10 | ?????1.97～2.11 |
| ?5 | ??JX2000-005 | ????Y47-171000A001 | 10 | ?????2.68～2.80 |
| ?6 | ??JX2000-006 | ????Y47-171000A001 | 10 | ?????2.65～2.82 |
| ?7 | ??JX2000-007 | ????Y47-171000A001 | 10 | ?????2.62～2.73 |
| ?8 | ??JX2000-008 | ????Y47-171000A001 | 20 | ?????2.60～2.80 |
| ?9 | ??JX2000-009 | ????X300B-173000A001 | 20 | ?????1.92～2.10 |
| ?10 | ??JX2000-010 | ????X300B-173000A001 | 20 | ?????2.05～2.22 |
| ?11 | ??JX2000-011 | ????X300B-173000A001 | 20 | ?????1.92～2.08 |
| ?12 | ??JX2000-012 | ????Y47-171000A001 | 20 | 3.36～3.86 (annotate: φ 1.3mm) |
| ?13 | ??JX2000-013 | ????Y47-171000A001 | 20 | 3.33～3.78 (annotate: φ 1.3mm) |
| ?14 | ??JX2000-014 | ????Y47-171000A001 | 20 | 3.42～3.81 (annotate: φ 1.3mm) |
| ?15 | ??JX2000-015 | ????X300B-173000A001 | 20 | 2.51～2.91 (annotate: φ 1.3mm) |
| ?16 | ??JX2000-016 | ????X300B-173000A001 | 20 | 2.61～2.95 (annotate: φ 1.3mm) |
| ?17 | ??JX2000-017 | ????X300B-173000A001 | 20 | 2.61～2.87 (annotate: φ 1.3mm) |
The assay statistical form 4 of 537 ℃ of high temperature rigidity of the second series-produced gland spring finished product
| Sequence number | Heat (batch) number | Figure number | The test number of packages | Assay (high temperature rigidity value) |
| ????1 | ????JX2001-001 | ??Y47-171000A001 | 10 | ????2.66～2.82 |
| ????2 | ????JX2001-002 | ??Y47-171000A001 | 10 | ????2.61～2.85 |
| ????3 | ????JX2001-003 | ??Y47-171000A001 | 20 | ????2.63～2.81 |
| ????4 | ????JX2001-004 | ??Y47-171000A001 | 20 | ????2.59～2.76 |
| ????5 | ????JX2001-005 | ??X300B-173000A001 | 10 | ????1.87～2.11 |
| ????6 | ????JX2001-006 | ??Y47-171000A001 | 10 | ????2.46～2.99 |
| ????7 | ????JX2001-007 | ??X300B-173000A001 | 20 | ????1.85～2.20 |
| ????8 | ????JX2001-008 | ??X300B-173000A001 | 20 | ????1.82～2.16 |
| ????9 | ????JX2001-009 | ??D300N-100000A001 | 20 | ????4.92～5.43 |
| ????10 | ????JX2001-010 | ??D300N-100000A001 | 20 | ????4.87～5.20 |
| ????11 | ????JX2001-011 | ??D300N-100000A001 | 20 | ????4.83～5.49 |
| ????12 | ????JX2001-012 | ??D300N-100000A001 | 20 | ????4.71～5.21 |
| ????13 | ????JX2001-013 | ??D300N-100000A001 | 20 | ????4.91～5.20 |
| ????14 | ????JX2001-014 | ??X300B-173000A001 | 20 | ????6.07～6.94 |
| ????15 | ????JX2001-015 | ??D300N-100000A001 | 20 | ????4.64～5.59 |
| ????16 | ????JX2001-016 | ??D300N-100000A001 | 20 | ????4.64～5.32 |
| ????17 | ????JX2001-017 | ??D300N-100000A001 | 20 | ????4.65～5.47 |
| ????18 | ????JX2001-018 | ??D300N-100000A001 | 20 | ????4.70～5.04 |
| ????19 | ????JX2001-019 | ??D300N-100000A001 | 20 | ????4.73～5.32 |
| ????20 | ????JX2001-020 | ??D300N-100000A001 | 20 | ????4.64～5.12 |
| ????21 | ????JX2001-021 | ??D300N-100000A001 | 20 | ????4.66～5.32 |
| ????22 | ????JX2001-022 | ??D300N-100000A001 | 20 | ????4.71～5.20 |
| ????23 | ????JX2001-023 | ??D300N-100000A001 | 20 | ????4.72～5.08 |
| ????24 | ????JX2001-024 | ??D300N-100000A001 | 20 | ????4.79～5.21 |
| ????25 | ????JX2001-025 | ??D300N-100000A001 | 20 | ????4.77～4.98 |
The assay statistics of 537 ℃ of high temperature rigidity of the 3rd series-produced gland spring finished product
Table 5
| Sequence number | Heat (batch) number | Figure number | The test number of packages | Assay (high temperature rigidity value) |
| ???1 | ????JX2002-001 | ??D300N-100000A001 | 20 | ?????4.70～5.50 |
| ???2 | ????JX2002-002 | ??Y47-171000A001 | 20 | ?????2.46～2.97 |
| ???3 | ????JX2002-003 | ??D300N-100000A001 | 20 | ?????4.65～5.35 |
| ???4 | ????JX2002-004 | ??Y47-171000A001 | 20 | ?????2.48～2.95 |
| ???5 | ????JX2002-005 | ??D300N-100000A001 | 20 | ?????4.86～5.32 |
| ???6 | ????JX2002-006 | ??D300N-100000A001 | 20 | ?????4.86～5.46 |
Claims (9)
1. turbine steam seal high temperature alloy spring, it is characterized in that: it is the column type helical spring made from InconelX-750 (GH4145) alloy silk.
2. turbine steam seal high temperature alloy spring according to claim 1 is characterized in that: spring is a cylindroid helicalcoil compression spring.
3. make the processing method that aforesaid right requires 2 described packings usefulness high temperature alloy springs for one kind, comprise the step of following order:
(1). with InconelX-750 (GH4145) alloy silk coiled long paper spring blank on plug,
(2). the spring number of total coils by design code cuts into single spring blank,
(3). clean the spring blank,
(4). carry out solution heat treatment,
(5). crop, adjustment spring pitch,
(6). carry out timeliness heat treatment,
(7). the finished product spring carries out high temperature stiffness testing and the check of high temperature permanent deformation,
(8). the antirust processing of finished product spring, packing,
Described solution heat treatment is 1000 ℃-1100 ℃ and goes into stove to the temperature processing of coming out of the stove to temperature, and heating rate is 25 ℃-50 ℃/minute,
Described timeliness heat treatment is 650 ℃-750 ℃ insulation 15hr-25hr ageing treatment.
4. packing according to claim 3 is characterized in that with the processing method of high temperature alloy spring: described solution heat treatment is 1065 ℃ and goes into stove to the temperature processing of coming out of the stove to temperature that described timeliness heat treatment is 704 ℃ and is incubated the 20hr ageing treatment.
5. turbine steam seal high temperature alloy spring verifying attachment, it is characterized in that: on horizontal table, be provided be used to provide check temperature required add electrothermal stove, be provided with in this electric furnace and pass electric furnace guide rod vertical with worktable and that be connected with support, on guide rod, put tested spring, gland and measuring disk in regular turn, place counterweight on this measuring disk, have dial indicator in measuring disk, add electrothermal stove and link to each other with the temperature control instrument of band temperature transducer.
6. packing high temperature alloy spring verifying attachment according to claim 5 is characterized in that: guide rod flexibly connects by cross bar on the support and worktable.
7. packing high temperature alloy spring verifying attachment according to claim 5 is characterized in that: have the gap between guide rod and the tested spring.
8. packing high temperature alloy spring verifying attachment according to claim 5 is characterized in that: have the gap between measuring disk, gland and the guide rod.
9. packing high temperature alloy spring verifying attachment according to claim 5 is characterized in that: sensor adopts thermocouple.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 02133773 CN1410688A (en) | 2002-09-19 | 2002-09-19 | High temperature alloy spring for steam turbine steam locking and its processing method and detecting installation |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 02133773 CN1410688A (en) | 2002-09-19 | 2002-09-19 | High temperature alloy spring for steam turbine steam locking and its processing method and detecting installation |
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| CN1410688A true CN1410688A (en) | 2003-04-16 |
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| CN 02133773 Pending CN1410688A (en) | 2002-09-19 | 2002-09-19 | High temperature alloy spring for steam turbine steam locking and its processing method and detecting installation |
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| CN102618818A (en) * | 2012-03-21 | 2012-08-01 | 浙江高中压阀门有限公司 | Manufacturing method of high-temperature high-pressure large-aperture piston ring |
| CN104343871A (en) * | 2014-09-26 | 2015-02-11 | 无锡市天力五金弹簧厂 | Raw material and method for manufacturing constant-pressure spring |
| CN112077166A (en) * | 2020-07-16 | 2020-12-15 | 河北五维航电科技股份有限公司 | Preparation method of high-temperature steam seal spring for ultra-supercritical steam turbine |
| CN113637929A (en) * | 2021-07-14 | 2021-11-12 | 北京科技大学 | Heat treatment process for improving room temperature strength of nickel-based high-temperature alloy |
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2002
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102618818A (en) * | 2012-03-21 | 2012-08-01 | 浙江高中压阀门有限公司 | Manufacturing method of high-temperature high-pressure large-aperture piston ring |
| CN104343871A (en) * | 2014-09-26 | 2015-02-11 | 无锡市天力五金弹簧厂 | Raw material and method for manufacturing constant-pressure spring |
| CN112077166A (en) * | 2020-07-16 | 2020-12-15 | 河北五维航电科技股份有限公司 | Preparation method of high-temperature steam seal spring for ultra-supercritical steam turbine |
| CN112077166B (en) * | 2020-07-16 | 2022-05-20 | 河北五维航电科技股份有限公司 | Preparation method of high-temperature steam seal spring for ultra-supercritical steam turbine |
| CN113637929A (en) * | 2021-07-14 | 2021-11-12 | 北京科技大学 | Heat treatment process for improving room temperature strength of nickel-based high-temperature alloy |
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