CN101165306A - Sucker rod cold-drawing recovery production process - Google Patents
Sucker rod cold-drawing recovery production process Download PDFInfo
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- CN101165306A CN101165306A CNA2007101137694A CN200710113769A CN101165306A CN 101165306 A CN101165306 A CN 101165306A CN A2007101137694 A CNA2007101137694 A CN A2007101137694A CN 200710113769 A CN200710113769 A CN 200710113769A CN 101165306 A CN101165306 A CN 101165306A
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
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- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
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Abstract
The present invention relates to sucker rod, and is especially a used sucker rod renewing cold drawing process. The used sucker rod renewing cold drawing process includes the steps of cleaning, sorting, cutting ends, the first heat treatment, surface pickling, saponification, cold drawing, lengthing and cutting ends, plain forging, the second heat treatment, shot blasting, rod head machining, rod head inspection, spraying paint and packing. The process can renew waste sucker rod to low cost and raise material utilizing rate.
Description
Technical field
The present invention relates to a kind of manufacturing process of sucker rod, the cold-drawing recovery coming of new technology of a kind of waste and old sucker rod of more specifically saying so.
Background technology
Sucker rod is one of necessary tool in the oil recovery process of oil field, and every year, only domestic consumption was about about 6000 myriametres.In oil extraction operation, sucker rod is under the stress alternation effect, afford up to a million times pulling force influence, and be subjected to the corrosion of down-hole medium, and and oil pipe between friction, and the collision of valve between sitting, cause sucker rod symptoms such as bending, elongation, burn into eccentric wear to occur, through the magnetic powder flaw detector flaw detection, the sucker rod of annual nearly 30-40% has lost the military service ability and has been eliminated.2004 the 24th phases " western part of China science and technology " publication " technology and the Economic and Efficiency Analysis of sucker rod repaired in a cold-drawn " literary composition, the technology that sucker rod is repaired in cold-drawn is disclosed, but this article just discloses technological process, does not relate to the concrete parameter index of each technology.For the sucker rod of scrapping is utilized again, reduce production costs, year June in November, 2002 to 2004, I technician of company passes through conscientiously research with the oil field professional and technical personnel, constantly manufacturing process is adjusted and perfect, finally produce the sucker rod that meets industry standard by the cold-drawing recovery new technology, and be widely applied in Dongying Shengli Oil Field and Zhongyuan Oil Field, Puyang, the Henan oil producing operation, kept 40 myriametres not have disconnected bar problem in process of production.
Summary of the invention
The purpose of this invention is to provide a kind of sucker rod cold-drawing recovery production process, can avoid most of waste and old sucker rod to be eliminated, thereby reach again the purpose of utilizing, turn waste into wealth, reduce cost, improve stock utilization.
The technical solution adopted for the present invention to solve the technical problems is:
Variation has taken place according to cleaning sorting, crop, first step structure in a kind of sucker rod cold-drawing recovery new process for machining and manufacturing successively, and density increases, and forms one deck hardened layer on the surface, and the formation of hardened layer has directly prolonged the application life of sucker rod.
Description of drawings
Description of drawings the schematic diagram of main processing and manufacturing process of this process program.
The specific embodiment
The present invention is further described below in conjunction with drawings and Examples.
The present invention is a kind of sucker rod cold-drawing recovery production process, and accompanying drawing is the technological process of cold-drawn sucker rod.(1) is that waste and old sucker rod is cleaned grease among the figure, checks whether the body of rod can carry out cold-drawn, and filters out the sucker rod that the pockmark diameter is O-1.5mm, enters later operation; (2) be that one of waste and old sucker rod cuts off with cutting machine, the other end is that machinery is directly cut off; (3) be that the body of rod is carried out first step heat treatment, heat, make whole body of rod annealing, reducing the hardness of former waste and old sucker rod, and make body of rod internal stress be released and eliminate with the induction heating equipment of frequency range 2000-2500Hz; (4) be that the body of rod is pounded carefully, what φ 25 pulled out φ 22 should be φ 21.5-φ 20; φ 22 pulls out in the scope that should be φ 18.5-φ 17 of φ 19 and carries out pointing; (5) be body of rod surface acid-washing, body of rod surface is because of there being a large amount of oxides, is the acidification that the hydrochloric acid of 35-5% carried out 20-120 minute by concentration; (6) be body of rod saponification, to put into concentration be 4.5-10% to drying after the body of rod acidifying, and temperature is in 60-80 ℃ the saponification pond saponification 20-60 minute; (7) be to utilize drawbench the body of rod to be carried out a cold-drawn, φ 25-φ 23.40 behind the body of rod saponification airing; φ 22-φ 20.50; (8) be that the body of rod after the cold-drawn is carried out the secondary saponification in the saponification pond, the about 20-50 of saponification time minute; (9) being that the good body of rod of secondary saponification is carried out the secondary cold-drawn, is the standard body of rod with body of rod cold-drawn; (10) be at normal temperatures, slightly crooked sucker rod is appearred in the body of rod after the cold-drawn, carry out alignment by straightener; (11) be the chemical composition of the chemical examination body of rod, it is sorted out by heterogeneity; (12) according to the real size of all kinds of bars, the body of rod is truncated into: φ 19mm is truncated into 7.45m, 7.87m and 8.45m; φ 22mm is truncated into several regular sizes such as 8.45m, 8.95m and 9.59m; (13) be that the barre head forges into blank by standard; (14) be that the sucker rod that forges into blank is heat-treated, the i.e. second step heat treatment, the body of rod is in the nature laying state, body of rod temperature is controlled at 800-1100 ℃ and carry out jet hardening, heat treatment, surface acid-washing, body of rod saponification, cold-drawn, chemical examination scale crop, the flat forging, the second step heat treatment, ball blast, the processing of bar head, the check of bar head, the packing of spraying paint, warehouse-in technological process processing, during described first step heat treatment, the induction heating equipment of old pumping rod through 2000-2500Hz heated, when the surface layer temperatures of the body of rod is heated to 650-800 ℃, cooling naturally; When described sucker rod carried out body of rod surface acid-washing, the concentration of hydrochloric acid was 35-5%, and the time of pickling is 20-120 minute; When described sucker rod carried out body of rod saponification, saponification liquor concentration was 4.5-10%, and saponification temperature is 60-80 ℃, and saponification time is 20-60 minute; After described sucker rod carries out body of rod saponification airing, utilize drawbench that the body of rod is carried out a cold-drawn; After the cold-drawn of the described sucker rod body of rod, carry out the secondary saponification, saponification time is 20-50 minute; After the saponification of described sucker rod body of rod secondary, the body of rod carries out the secondary cold-drawn; Described second step is during heat treatment, the body of rod is in the nature laying state and heats, body of rod temperature is controlled at 800-1100 ℃ and carry out jet hardening, when reaching 50-80 ℃, body of rod temperature carries out whole tempering subsequently, temperature is controlled at 560-660 ℃, then the bar head is carried out one time temper more separately, temperature is controlled at 580-680 ℃.
During to the sucker rod jet hardening, water temperature is below 40 ℃, and discharge is 20-25m
3/ h.After the sucker rod jet hardening, to shaft adopt 10-30 rev/min of higher speed of related movement, high-power, carry out whole tempering than the low capacity mode of heating, adopt low-power, big capacity, static heated condition mode to carry out temper to the bar head.
The invention has the beneficial effects as follows: by the enforcement of technical solution of the present invention, the waste and old sucker rod that loses the military service ability is carried out cold-drawn to be handled, make it reach original use standard, condemned MAT'L is utilized again, the problem that has solved sucker rod and scrapped owing to produce eccentric wear, pockmark.And through after the cold-drawn for the first time, pockmark and eccentric wear defective on the waste and old sucker rod body of rod are eliminated substantially, and the body of rod and is made that sucker rod metal structure density increases, intensity increases by secondary extrusion after the secondary cold-drawn.It is exactly with behind the annealing in process polished rod that this technology is different from other technology part, and polished rod is carried out cold-drawn, to reach waste and old sucker rod by multiple new purpose.
Cold drawing of metal processing is a kind of precise machining process in the machining, and in this process, metal is actually by special mould extrusion forging and forms.After the metal extrusion modling, the physical organization of its bar carries out whole tempering subsequently when body of rod temperature reaches 50-80 ℃, temperature is controlled at 560-660 ℃, then the bar head is carried out again 600-680 ℃ temper separately, after the bar head is handled, carry out pulling force alignment and tension experiment under the state that whole body of rod maintenance temperature is 200-350 ℃, φ 19 pulling force are controlled between the 6.0-7.5MPa, φ 22 pulling force are controlled between the 7.0-9.0MPa, the body of rod cools off the back naturally and carry out alignment on straightener, enters next process after qualified; (15) be that the sucker rod body of rod is carried out whole Shot Blasting, mainly be that shot impacts the metal surface, improve the resistivity of body of rod plastic strain and fracture, and make the top layer produce compressive stress, improve its fatigue strength, thereby the concentrated stress of the body of rod is further reduced; (16) be the bar head to be processed, and test by industry standard according to industry standard; (17) be that sucker rod head to processing bar head carries out magnetic leakage detection, prevent forge with process in defective appears, to guarantee the quality of sucker rod; The 18th, with the processing of spraying paint of finished product sucker rod, according to different specification packings; The 19th, the sucker rod that packing is good is put in storage.
This technology is when first step heat treatment (3), and the body of rod is to heat under nature, and body of rod internal stress is released, and the hardness of the body of rod is reduced, and guarantees body of rod back to nature, and hardness is even, is convenient to cold-drawn; The second step heat treatment 14 is key points of cold-drawing technology, the independent processing of quenching, tempering and bar head by carrying out the body of rod, can guarantee the quality of whole bar, and between 250-400 ℃ of temperature, carry out the experiment of hot-drawn power, guarantee that sucker rod can bear enough big pulling force, to reach the safety factor of sucker rod.Utilize technology of the present invention to after scrapping sucker rod and carrying out processing and manufacturing, can make it meet and exceed original sucker rod level.
Claims (3)
1. sucker rod cold-drawing recovery production process, according to cleaning sorting, crop, first step heat treatment (3), surface acid-washing (5), body of rod saponification (6), cold-drawn, chemical examination scale crop, flat forging, the second step heat treatment (14), ball blast, the processing of bar head, the check of bar head, the packing of spraying paint, warehouse-in technological process processing, it is characterized in that successively:
During described first step heat treatment (3), the induction heating equipment of old pumping rod through 2000-2500Hz heated, when the surface layer temperatures of the body of rod is heated to 650-800 ℃, cooling naturally;
When described sucker rod carried out body of rod surface acid-washing (5), the concentration of hydrochloric acid was 35-5%, and the time of pickling is 20-120 minute;
When described sucker rod carried out body of rod saponification (6), saponification liquor concentration was 4.5-10%, and saponification temperature is 60-80 ℃, and saponification time is 20-60 minute;
After described sucker rod carries out body of rod saponification (6) airing, utilize drawbench that the body of rod is carried out a cold-drawn (7);
After the cold-drawn of the described sucker rod body of rod (7), carry out secondary saponification (8), saponification time is 20-50 minute;
After the described sucker rod body of rod secondary saponification (8), the body of rod carries out secondary cold-drawn (9);
The described second step heat treatment is when (14), the body of rod is in the nature laying state and heats, body of rod temperature is controlled at 800-1100 ℃ and carry out jet hardening, when reaching 50-80 ℃, body of rod temperature carries out whole tempering subsequently, temperature is controlled at 560-660 ℃, then the bar head is carried out one time temper more separately, temperature is controlled at 580-680 ℃.
2. sucker rod cold-drawing recovery production process according to claim 1 is characterized in that: during to the sucker rod jet hardening, water temperature is below 40 ℃, and discharge is 20-25m
3/ h.
3. sucker rod cold-drawing recovery production process according to claim 1, it is characterized in that: after the sucker rod jet hardening, to shaft adopt 10-30 rev/min of higher speed of related movement, high-power, carry out whole tempering than the low capacity mode of heating, adopt low-power, big capacity, static heated condition to carry out temper to the bar head.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2007101137694A CN100559009C (en) | 2007-09-12 | 2007-09-12 | A kind of sucker rod cold-drawing recovery production process |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2007101137694A CN100559009C (en) | 2007-09-12 | 2007-09-12 | A kind of sucker rod cold-drawing recovery production process |
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| CN101165306A true CN101165306A (en) | 2008-04-23 |
| CN100559009C CN100559009C (en) | 2009-11-11 |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102699617A (en) * | 2012-05-29 | 2012-10-03 | 吕少华 | Remanufacturing method for waste oil tubes |
| CN106826114A (en) * | 2017-01-18 | 2017-06-13 | 抚顺特殊钢股份有限公司 | A kind of manufacturing process of GH3625 alloys cold-drawn material |
| CN108381114A (en) * | 2018-02-07 | 2018-08-10 | 宁夏长鑫防腐工程有限公司 | Old pumping rod fatigue strength restores technique and its device |
| CN111495994A (en) * | 2020-04-27 | 2020-08-07 | 浙江丰原型钢科技有限公司 | Processing technology of high-strength corrosion-resistant square steel |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102189379B (en) * | 2011-04-13 | 2012-09-05 | 张家港保税区恒隆钢管有限公司 | Cold drawing method for special-shaped pipes |
-
2007
- 2007-09-12 CN CNB2007101137694A patent/CN100559009C/en active Active
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102699617A (en) * | 2012-05-29 | 2012-10-03 | 吕少华 | Remanufacturing method for waste oil tubes |
| CN106826114A (en) * | 2017-01-18 | 2017-06-13 | 抚顺特殊钢股份有限公司 | A kind of manufacturing process of GH3625 alloys cold-drawn material |
| CN106826114B (en) * | 2017-01-18 | 2020-12-04 | 抚顺特殊钢股份有限公司 | Manufacturing process of GH3625 alloy cold-drawn material |
| CN108381114A (en) * | 2018-02-07 | 2018-08-10 | 宁夏长鑫防腐工程有限公司 | Old pumping rod fatigue strength restores technique and its device |
| CN111495994A (en) * | 2020-04-27 | 2020-08-07 | 浙江丰原型钢科技有限公司 | Processing technology of high-strength corrosion-resistant square steel |
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| Publication number | Publication date |
|---|---|
| CN100559009C (en) | 2009-11-11 |
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Effective date of registration: 20230607 Address after: 252800 East of 105 State Road, South Head, Lutian Village, Renhe Street, Gaotang County, Liaocheng, Shandong Province Patentee after: Shandong Xuhang Petroleum Equipment Co.,Ltd. Address before: 252800 Shandong County of Gaotang province and the office of Lin Zhai Industrial Park No. 336 Jing Hua trade limited company Patentee before: Lv Shaohua Patentee before: Huang Shiqiang |
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