CN101543947B - Method for manufacturing spring of derrick centralizer - Google Patents
Method for manufacturing spring of derrick centralizer Download PDFInfo
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- CN101543947B CN101543947B CN2009100647877A CN200910064787A CN101543947B CN 101543947 B CN101543947 B CN 101543947B CN 2009100647877 A CN2009100647877 A CN 2009100647877A CN 200910064787 A CN200910064787 A CN 200910064787A CN 101543947 B CN101543947 B CN 101543947B
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- derrick
- centralizer
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Abstract
The invention relates to a method for manufacturing a spring of a derrick centralizer, which comprises the following processing steps: (1) selecting an austenitic stainless steel wire as a material of the spring; (2) performing solution treatment, namely heating the steel wire to between 1,050 and 1,100 DEG C under the protection of atmosphere, preserving the temperature for 25 to 35min, and cooling the steel wire by water to normal temperature; (3) performing cold drawing on the steel wire to make the steel wire have a required diameter; (4) coiling the steel wire on a spring coiling machine; (5) performing relief annealing, namely heating the coiled spring to between 390 and 410 DEG C in a tempering furnace under the protection of atmosphere, and preserving the temperature for 25 to 30 minutes; (6) combining end rings of the spring, and correcting the spring; (7) performing treatment of removing residual stress, namely pressing two ends of the spring tightly to make the rings of the spring combined and formed, heating the spring at a temperature of between 240 and 270 DEG C, preserving the temperature for more than or equal to 3h, and cooling the spring by air to room temperature; and (8) performing one-stage or multi-stage shot cold hardening on the spring. The spring of the derrick centralizer manufactured by the method can strengthen corrosion resistance and fatigue resistance under severe working conditions in oil field, while meeting the requirement on the characteristics of the spring, and.
Description
Technical field
The present invention relates to a kind of manufacture method of spring of derrick centralizer.
Background technology
Derrick centralizer has very important effect as the important component part of oil truck-mounted drill rig derrick in the telescopic process of derrick.Because oil truck-mounted drill rig derrick reduction cylinder of tens meters long in telescopic process tilts easily or is crooked, cause taking off the failure of rising of cylinder or derrick, cause security incident.Derrick centralizer is opened automatically telescoping cylinder is embraced the location when derrick rises to certain altitude, guarantees not run-off the straight or bending in the telescoping cylinder telescopic process, prevents the generation of contingency.The critical component that derrick centralizer is opened automatically is exactly an extension spring.At present, what use on the derrick centralizer is the extension spring of 65Mn or 60Si2Mn material, this class spring gets rusty easily under the abominable industrial and mineral condition in oil field, make the spring wire diameter more and more thinner, fatigue resistance reduces, easily brittle failure, thus have influence on normally opening of derrick centralizer, security incident very easily takes place.
Summary of the invention
The objective of the invention is deficiency at the prior art existence, a kind of method for manufacturing spring of derrick centralizer is provided, make and use the spring of derrick centralizer that the present invention makes, when satisfying the spring performance requirement, can strengthen resistance to corrosion and anti-fatigue ability under the bad working environments condition of oil field, improve the reliability of derrick centralizer and the service life of prolongation derrick centralizer, thereby improve the flexible safety coefficient of derrick greatly.
A kind of method for manufacturing spring of derrick centralizer is characterized in that: processing step is as follows:
(1) the spring material is selected the austenite stainless steel wire for use;
(2) solution treatment: steel wire is heated to 1050～1100 ℃ in the atmosphere protection stove, insulation 25～35min, water-cooled is to normal temperature then;
(3) steel wire is carried out cold drawn processing, make steel wire reach necessary diameter;
(4) on spring coiling machine, steel wire is rolled;
(5) stress relief annealing: rolled spring heats 400 ± 10 ℃ in the atmosphere protection tempering furnace, insulation 25～30min;
(6) and bearing coil, correcting spring;
(7) removing residual stress handles: the holddown spring two ends are heated each circle of spring and the tight back that is shaped under 240～270 ℃ of temperature, insulation 〉=3h, and air cooling is to room temperature then;
(8) spring being carried out one or more levels peening handles.
The austenite stainless steel wire is selected 0Cr18Ni9 for use in the above-mentioned steps (1).
Select for use the secondary peening to handle in the above-mentioned steps (8), the hardness that the first order is used Φ 1.5～1.8mm is sprayed 25～35min as the cast steel ball of HRC40～50 with the speed of 60～80m/min; The hardness that Φ 0.6～1.0mm is used in the second level as the cast steel ball of HRC40～50 with 70～90m/min speed spray, 25～35min.
Beneficial effect:
It is the austenite stainless steel wire that the present invention selects the spring material for use, dissolve in the middle of the metal lattice by solute atoms after the solution treatment, weakened intercrystalline corrosion, thereby guaranteed to have very strong resistance to corrosion when spring performance requires, solution treatment is simultaneously softened steel wire and is beneficial to drawing.Steel wire is carried out cold drawn, when satisfying steel wire and reaching required diameter, can improve the yield strength and the tensile strength of steel wire.Stress relief annealing, removal residual stress are handled, and the stress in the spring material is released, and have improved the fatigue resistance of spring.One or more levels bead increases the spring bearing stress and makes fatigue strength be able to further raising.The invention solves the known technology spring of derrick centralizer under the mal-condition of well site, easily the corrosion pulling force that attenuates diminishes and causes the problem of inefficacy, improve the stability of derrick centralizer, prolonged derrick centralizer service life, improved the safety coefficient that derrick hoists.
The specific embodiment
Below with derrick centralizer with steel wire diameter Φ 8mm, drift L=752mm, internal diameter Φ 42mm, middle footpath Φ 50mm, the dextrorotation extension spring manufacture method of n=82 is an example, and the present invention is further described.Its processing step is as follows:
(1) the spring material is selected austenite stainless steel wire 0Cr18Ni9 for use;
(2) solution treatment: in RX-65-12Q atmosphere protection stove, be heated to 1080 ℃ ± 10 ℃, insulation 30min, water-cooled is to normal temperature then.
(3) steel wire is carried out cold drawn processing, make steel wire diameter reach Φ 8mm;
(4) on the Z53-8 automatic spring wind-, steel wire is rolled;
(5) stress relief annealing: rolled spring heats 400 ± 5 ℃ in JH-75-6Q atmosphere protection tempering furnace, insulation 25～30min;
(6) and bearing coil, correcting spring;
(7) removing residual stress handles: the holddown spring two ends are heated each circle of spring and the tight back that is shaped under 250 ℃ ± 10 ℃ temperature, insulation 5h, and air cooling is to room temperature then;
(8) spring is carried out first order bead: the hardness of using Φ 1.5mm is the cast steel ball of the HRC40-50 speed spray 30min with 70m/min;
(9) spring is carried out second level bead: the hardness of using Φ 0.6～1.0mm as the cast steel ball of HRC40～50 with 80m/min speed spray 30min;
(10) sanding and polishing being carried out on the spring surface handles.
To the drift of making is the derrick centralizer extension spring of L=752mm, on TLW-5000A drawing-pressing spring testing machine, carry out expansion-travel test, experimental condition is: stretch three times under test load Ps=2590N, the spring unloading is replied the back and is measured its drift deflection, requires drift deflection≤5mm.After tested, under test load Ps=2590N, the after-drawing length that stretches for the first time is 1339mm, and recording drift after the spring unloading is replied is 755mm, and deflection is 3mm; The after-drawing length that stretches for the second time is 1341mm, and recording drift after the spring unloading is replied is 756mm, and deflection is 4mm; The after-drawing length that stretches for the third time is 1340mm, and recording drift after the spring unloading is replied is 755.8mm, and deflection is 3.8mm, and the drift deflection is all less than 5mm, so spring performance meets the demands.
Spring steel wire is handled, is obtained sclerosis after the cold drawn processing through solution strengthening, and by to the steel wire sample testing, its mechanical performance reaches σ b 〉=1786MPa, σ s 〉=1660MPa, and ψ 〉=42% satisfies the requirement of spring to the steel wire mechanical performance.
Claims (4)
1. method for manufacturing spring of derrick centralizer, it is characterized in that: processing step is as follows:
(1) the spring material is selected the austenite stainless steel wire for use;
(2) solution treatment: steel wire is heated to 1050～1100 ℃ in the atmosphere protection stove, insulation 25～35min, water-cooled is to normal temperature then;
(3) steel wire is carried out cold drawn processing, make steel wire reach necessary diameter;
(4) on spring coiling machine, steel wire is rolled;
(5) stress relief annealing: rolled spring heats 400 ± 10 ℃ in the atmosphere protection tempering furnace, insulation 25～30min;
(6) and bearing coil, correcting spring;
(7) removing residual stress handles: the holddown spring two ends are heated each circle of spring and the tight back that is shaped under 240～270 ℃ of temperature, insulation 〉=3h, and air cooling is to room temperature then;
(8) spring being carried out the one-level peening handles.
2. method for manufacturing spring of derrick centralizer, it is characterized in that: processing step is as follows:
(1) the spring material is selected the austenite stainless steel wire for use;
(2) solution treatment: steel wire is heated to 1050～1100 ℃ in the atmosphere protection stove, insulation 25～35min, water-cooled is to normal temperature then;
(3) steel wire is carried out cold drawn processing, make steel wire reach necessary diameter;
(4) on spring coiling machine, steel wire is rolled;
(5) stress relief annealing: rolled spring heats 400 ± 10 ℃ in the atmosphere protection tempering furnace, insulation 25～30min;
(6) and bearing coil, correcting spring;
(7) removing residual stress handles: the holddown spring two ends are heated each circle of spring and the tight back that is shaped under 240～270 ℃ of temperature, insulation 〉=3h, and air cooling is to room temperature then;
(8) spring being carried out multistage peening handles.
3. method for manufacturing spring of derrick centralizer as claimed in claim 1 or 2, it is characterized in that: the austenite stainless steel wire is selected 0Cr18Ni9 for use in the step (1).
4. as method for manufacturing spring of derrick centralizer as described in the claim 2, it is characterized in that, select for use the secondary peening to handle in the step (8), the hardness that the first order is used Φ 1.5～1.8mm is sprayed 25～35min as the cast steel ball of HRC40～50 with the speed of 60～80m/min; The hardness that Φ 0.6～1.0mm is used in the second level as the cast steel ball of HRC40～50 with 70～90m/min speed spray, 25～35min.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009100647877A CN101543947B (en) | 2009-04-25 | 2009-04-25 | Method for manufacturing spring of derrick centralizer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009100647877A CN101543947B (en) | 2009-04-25 | 2009-04-25 | Method for manufacturing spring of derrick centralizer |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101543947A CN101543947A (en) | 2009-09-30 |
| CN101543947B true CN101543947B (en) | 2011-01-19 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009100647877A Expired - Fee Related CN101543947B (en) | 2009-04-25 | 2009-04-25 | Method for manufacturing spring of derrick centralizer |
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Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP5805371B2 (en) * | 2010-03-23 | 2015-11-04 | 日本発條株式会社 | Heat treatment method for coil spring |
| CN102925647B (en) * | 2012-11-20 | 2015-03-18 | 无锡威孚精密机械制造有限责任公司 | Method for saturated shot blasting of stainless steel spring |
| CN105673749A (en) * | 2016-04-18 | 2016-06-15 | 哈尔滨市宏益实业集团有限公司 | Sand clock independent pocketed spring coil device and manufacturing method thereof |
| CN106011432A (en) * | 2016-07-05 | 2016-10-12 | 苏州市虎丘区浒墅关弹簧厂 | Heat treatment technology for spring used for bearing |
| CN108676973A (en) * | 2018-06-08 | 2018-10-19 | 铃木加普腾钢丝（苏州）有限公司 | A kind of method of oil-temper spring steel wire destressing |
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- 2009-04-25 CN CN2009100647877A patent/CN101543947B/en not_active Expired - Fee Related
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| CN101543947A (en) | 2009-09-30 |
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Address after: 473065 No. 869 West Zhongzhou Road, Henan, Nanyang Patentee after: RG PETRO-MACHINERY (GROUP) CO., LTD. Address before: 473065 No. 869 West Zhongzhou Road, Henan, Nanyang Patentee before: RG Petro-Machinery (Group) Co., Ltd. |
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Granted publication date: 20110119 Termination date: 20170425 |