CN104071445A - Thread protection cap and manufacturing method thereof - Google Patents
Thread protection cap and manufacturing method thereof Download PDFInfo
- Publication number
- CN104071445A CN104071445A CN201410286658.3A CN201410286658A CN104071445A CN 104071445 A CN104071445 A CN 104071445A CN 201410286658 A CN201410286658 A CN 201410286658A CN 104071445 A CN104071445 A CN 104071445A
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- cap body
- thread
- protection cap
- thread protection
- cap
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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
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W30/00—Technologies for solid waste management
- Y02W30/50—Reuse, recycling or recovery technologies
- Y02W30/80—Packaging reuse or recycling, e.g. of multilayer packaging
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- Audible-Bandwidth Dynamoelectric Transducers Other Than Pickups (AREA)
Abstract
The invention relates to a thread protection cap and a manufacturing method thereof. The thread protection cap is of a conical barrel structure; the outer wall or the inner wall of the thread protection cap is provided with screw threads; the thread protection cap comprises components of, by weight, 23.2% of silicon, 0.5% of iron, 3.8 to 4.9% of copper, 0.3 to 0.9% of manganese, 1.2 to 1.8% of magnesium, 0.1% of chromium, 0.25% of zinc, 0.15% of titanium and the balance aluminum. The manufacturing method comprises pouring the aluminum or aluminum scrap into a medium frequency electric furnace to be molten; pouring the molten aluminum alloy into a vertical or horizontal aluminum alloy die-casting machine, performing extrusion through the 200 to 300 tons of extrusion force when a conical-barrel-shaped mould cavity is full of the flowing molten liquid and obtaining a thread protection cap blank part after cooling; polishing the thread protection cap blank part and performing threading on the outer wall or the inner wall of the thread protection cap blank part to obtain a thread protection cap finished product. According to the thread protection cap and the manufacturing method thereof, the aluminum alloy production is adopted and accordingly the weight is light, the strength is high, and the toughness is good; the manufacturing method is simple and the production cost is low through one-step die-casting forming; the used thread protection cap is convenient to recycle.
Description
Technical field
The present invention relates to oil field operation instrument field, be specifically related to a kind of thread protecting cap for oilfield drill stem and manufacture method thereof.
Background technology
Thread protecting cap is widely used in oil well operation instrument, is enclosed within on drilling rod, drill collar in order to screw thread position is protected.Existing thread protecting cap is mainly made by following several materials: 1, steel plate, although the price of steel is relatively cheap, manufacturing procedure is many, conventionally will be through blanking-heating-punching press-heat again-punching press-machined into-operations such as antirust processing just can be made again, the common once words of not moulding, also to carry out secondary processing, improve productive costs, as adopted coal heating, can cause serious pollution to environment, in addition, the processing and utilization rate of steel plate is 80%, causes the waste of material of 20% left and right.2, plastic-steel, through the circle-punching press of blanking-volume-steel ring of the inside is carried out in punching press again, then is integral with plastic injection-moulded, and the cost of plastic-steel is cheap unlike steel, and its manufacturing procedure is many, and manufacturing cost is high, steel, moulds and decomposes difficulty, is not easy to recycle.3, plastics, manufacturing procedure is few, common single injection-molded, low price, productive costs is low, but plastics are cold, crisp winter, easily damages, and summer is hot, thread protecting cap is easily out of shape, recycling, and post bake can reduce the intensity of plastics, need to add new material and enter.
Summary of the invention
Technical matters to be solved by this invention is to overcome above-mentioned deficiency, provides a kind of lightweight, is convenient to workman's assembling, and intensity is high, the thread protecting cap of good toughness, and this thread protecting cap manufacture method is simple, and productive costs is low, and recovery utilization rate is high.
Technical scheme of the present invention: a kind of thread protecting cap; comprise cap body; described cap body is taper barrel-like structure; the inwall of cap body is provided with the negative thread matching with drill rod end outside thread; the port outer wall of cap body upper end extends outward a convex edge along the cross section of pipe; the bottom of cap body is provided with a square through hole, and the thread protecting cap of this structure is external thread protector cap, for the protection of the screw thread of drill rod end.
Described cap body is aluminum alloy material, and cap body component and percentage by weight are: silicon 23.2%, and iron 0.5%, copper 3.8～4.9%, manganese 0.3～0.9%, magnesium 1.2～1.8%, chromium 0.1%, zinc 0.25%, titanium 0.15%, surplus is aluminium.
Described cap body is aluminum alloy integral casting forming.
The another kind of structure of described thread protecting cap; comprise cap body; described cap body is taper barrel-like structure; the upper end of cap body is bell-mouth structure of air; the outer wall of cap body lower end is provided with the outside thread matching with the negative thread of drilling rod connecting bore inwall; the bottom of cap body is provided with a square through hole, and the thread protecting cap of this structure is internal thread protector cap, for the protection of drilling rod, connects the screw thread in shrinkage pool.
Described cap body is aluminum alloy material, and cap body component and percentage by weight are: silicon 23.2%, and iron 0.5%, copper 3.8～4.9%, manganese 0.3～0.9%, magnesium 1.2～1.8%, chromium 0.1%, zinc 0.25%, titanium 0.15%, surplus is aluminium.
The manufacture method of above-mentioned thread protecting cap, comprises the following steps:
(1), by middle frequency furnace temperature adjustment to 500～600 ℃, the electrolytic aluminium of getting ready or aluminium scrap are poured in middle frequency furnace and melted, by monitoring, adjust the required chemical composition of aluminum alloy, to siliceous 23.2%, iron 0.5%, copper 3.8～4.9%, manganese 0.3～0.9%, magnesium 1.2～1.8%, chromium 0.1%, zinc 0.25%, titanium 0.15%, the molten aluminium alloy having melted is standby;
(2) pour the liquation of step (1) into vertical or horizontal aluminum alloy press casting machine, treat that liquation stream completely arrive the taper tubbiness model cavity of die-cast machine, by the squeese pressure of 200 or 300 tons, model is pushed, the thread protecting cap blank described in obtaining after cooling;
(3) thread protecting cap blank step (2) being made is polished, at its outer wall or inwall Pick Wire button, thread protecting cap finished product.
The present invention compared with prior art has following beneficial effect:
1, the present invention adopts the moulding of aluminum alloy time processing, lightweight, is about 1/3rd of steel plate weight, and workman assembles easily, has effectively alleviated workman's labour intensity, and intensity is high, good toughness, and intensity can reach 260～270MPa/mm
2, stretch ratio is 3%.
2, the productive costs of product is low, and the cost of the thread protecting cap of steel is 70 yuan, and the cost of aluminum alloy thread protector cap is 60 yuan, reduces costs 10%, and the recovery utilization rate of aluminum alloy can reach 100%.
3, process for machining and manufacturing is simple, effectively reduces productive costs, has reduced environmental pollution.
Accompanying drawing explanation
Fig. 1 is structural representation of the present invention.
Fig. 2 is another kind of structural representation of the present invention.
In figure: 1-cap body, 2-convex edge, 3-negative thread, 4-through hole, 5-outside thread.
The specific embodiment
Embodiment 1
A kind of thread protecting cap; as shown in Figure 1; comprise cap body 1; described cap body is taper barrel-like structure; the inwall of cap body is provided with the negative thread 3 matching with drill rod end outside thread, and the port outer wall of cap body upper end extends outward a convex edge 2 along the cross section of pipe, and the bottom of cap body is provided with a square through hole 4; the thread protecting cap of this structure is external thread protector cap, for the protection of the screw thread of drill rod end.During use, thread protecting cap is screwed in to the position that drilling rod has screw thread, can effectively protects like this screw thread not damaged.
Described cap body adopts aluminum alloy material, and cap body component and percentage by weight are: silicon 23.2%, iron 0.5%, copper 4%, manganese 0.9%, magnesium 1.8%, chromium 0.1%, zinc 0.25%, titanium 0.15%, aluminium 69.1%.
Embodiment 2
A kind of thread protecting cap; as shown in Figure 2; comprise cap body 1; described cap body 1 is taper barrel-like structure; the upper end of cap body 1 is bell-mouth structure of air, and the outer wall of cap body lower end is provided with the outside thread 5 matching with the negative thread of drilling rod connecting bore inwall, and the bottom of cap body 1 is provided with a square through hole 4; the thread protecting cap of this structure is internal thread protector cap, for the protection of drilling rod, connects the screw thread in shrinkage pool.
During use, thread protecting cap is screwed in the shrinkage pool of jointed rod, can effectively protects like this screw thread not damaged.
Described cap body is aluminum alloy material, and cap body component and percentage by weight are: silicon 23.2%, iron 0.5%, copper 4.9%, manganese 0.5%, magnesium 1.2%, chromium 0.1%, zinc 0.25%, titanium 0.15%, aluminium 69.2%.
The manufacture method of above-mentioned thread protecting cap, comprises the following steps:
(1) by middle frequency furnace temperature adjustment to 500～600 ℃, the electrolytic aluminium of getting ready or aluminium scrap are poured in middle frequency furnace and melted, by monitoring, adjust the required chemical composition of aluminum alloy, to the needed chemical composition of aluminum alloy in embodiment 1 or 2, the molten aluminium alloy having melted is standby;
(2) pour the liquation of step (1) into vertical or horizontal aluminum alloy press casting machine, treat that liquation stream completely arrive the taper tubbiness model cavity of die-cast machine, by the squeese pressure of 300 tons, model is pushed, the thread protecting cap blank described in obtaining after cooling;
(3) thread protecting cap blank step (2) being made is polished, at its outer wall or inwall Pick Wire button, thread protecting cap finished product.
Claims (4)
1. a thread protecting cap, comprise cap body, it is characterized in that described cap body is taper barrel-like structure, the inwall of cap body is provided with the negative thread matching with drill rod end outside thread, the port outer wall of cap body upper end extends outward a convex edge along the cross section of pipe, and the bottom of cap body is provided with a square through hole;
Described cap body is aluminum alloy material, and cap body component and percentage by weight are: silicon 23.2%, and iron 0.5%, copper 3.8～4.9%, manganese 0.3～0.9%, magnesium 1.2～1.8%, chromium 0.1%, zinc 0.25%, titanium 0.15%, surplus is aluminium.
2. thread protecting cap according to claim 1, is characterized in that described cap body is the moulding of aluminum alloy integral die-cast.
3. a thread protecting cap, comprise cap body, it is characterized in that described cap body is taper barrel-like structure, the upper end of cap body is bell-mouth structure of air, the outer wall of cap body lower end is provided with the outside thread matching with the negative thread of drilling rod connecting bore inwall, and the bottom of cap body is provided with a square through hole;
Described cap body is aluminum alloy material, and cap body component and percentage by weight are: silicon 23.2%, and iron 0.5%, copper 3.8～4.9%, manganese 0.3～0.9%, magnesium 1.2～1.8%, chromium 0.1%, zinc 0.25%, titanium 0.15%, surplus is aluminium.
4. a method of manufacturing thread protecting cap described in claim 1 or 3, is characterized in that comprising the following steps:
(1), by middle frequency furnace temperature adjustment to 500～600 ℃, the electrolytic aluminium of getting ready or aluminium scrap are poured in middle frequency furnace and melted, by monitoring, adjust the required chemical composition of aluminum alloy, to siliceous 23.2%, iron 0.5%, copper 3.8～4.9%, manganese 0.3～0.9%, magnesium 1.2～1.8%, chromium 0.1%, zinc 0.25%, titanium 0.15%, the molten aluminium alloy having melted is standby;
(2) pour the liquation of step (1) into vertical or horizontal aluminum alloy press casting machine, treat that liquation stream completely arrive the taper tubbiness model cavity of die-cast machine, by the squeese pressure of 200 or 300 tons, model is pushed, the thread protecting cap blank described in obtaining after cooling;
(3) thread protecting cap blank step (2) being made is polished, at its outer wall or inwall Pick Wire button, thread protecting cap finished product.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410286658.3A CN104071445B (en) | 2014-06-25 | 2014-06-25 | Thread protecting cap and manufacture method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410286658.3A CN104071445B (en) | 2014-06-25 | 2014-06-25 | Thread protecting cap and manufacture method thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104071445A true CN104071445A (en) | 2014-10-01 |
| CN104071445B CN104071445B (en) | 2016-08-24 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410286658.3A Expired - Fee Related CN104071445B (en) | 2014-06-25 | 2014-06-25 | Thread protecting cap and manufacture method thereof |
Country Status (1)
| Country | Link |
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| CN (1) | CN104071445B (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104389531A (en) * | 2014-11-26 | 2015-03-04 | 中国海洋石油总公司 | Screw protection cap of sleeve |
| CN104612600A (en) * | 2015-01-30 | 2015-05-13 | 杨海龙 | Thread protecting cap for well casing |
| CN112678336A (en) * | 2020-12-18 | 2021-04-20 | 中国二十冶集团有限公司 | Protective cap of net rack rod piece high-strength bolt |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB855175A (en) * | 1957-08-07 | 1960-11-30 | Edward Francis Higgins | Improvements relating to thread protectors for protecting the screwed ends of rods |
| CN2122767U (en) * | 1992-05-06 | 1992-11-25 | 茹斌 | Valve connector |
| JPH10193903A (en) * | 1996-08-27 | 1998-07-28 | Daimler Benz Ag | Method for covering wheel of automobile having rim made of light-weight alloy during long distance transportation |
| CN2786271Y (en) * | 2005-02-04 | 2006-06-07 | 康玉波 | Centralizer arranged on hollow sucker rod joint stub |
| CN201206013Y (en) * | 2008-04-11 | 2009-03-11 | 邓翔威 | Petroleum pipeline protection axle sleeve |
| CN101898656A (en) * | 2010-07-23 | 2010-12-01 | 程浩然 | Tube end protective cap |
| CN102016092A (en) * | 2008-04-30 | 2011-04-13 | 联邦科学和工业研究组织 | Improved aluminium based casting alloy |
| CN203033144U (en) * | 2013-02-04 | 2013-07-03 | 成都大漠石油机械有限公司 | Oil tube screw protector |
-
2014
- 2014-06-25 CN CN201410286658.3A patent/CN104071445B/en not_active Expired - Fee Related
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB855175A (en) * | 1957-08-07 | 1960-11-30 | Edward Francis Higgins | Improvements relating to thread protectors for protecting the screwed ends of rods |
| CN2122767U (en) * | 1992-05-06 | 1992-11-25 | 茹斌 | Valve connector |
| JPH10193903A (en) * | 1996-08-27 | 1998-07-28 | Daimler Benz Ag | Method for covering wheel of automobile having rim made of light-weight alloy during long distance transportation |
| CN2786271Y (en) * | 2005-02-04 | 2006-06-07 | 康玉波 | Centralizer arranged on hollow sucker rod joint stub |
| CN201206013Y (en) * | 2008-04-11 | 2009-03-11 | 邓翔威 | Petroleum pipeline protection axle sleeve |
| CN102016092A (en) * | 2008-04-30 | 2011-04-13 | 联邦科学和工业研究组织 | Improved aluminium based casting alloy |
| CN101898656A (en) * | 2010-07-23 | 2010-12-01 | 程浩然 | Tube end protective cap |
| CN203033144U (en) * | 2013-02-04 | 2013-07-03 | 成都大漠石油机械有限公司 | Oil tube screw protector |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104389531A (en) * | 2014-11-26 | 2015-03-04 | 中国海洋石油总公司 | Screw protection cap of sleeve |
| CN104389531B (en) * | 2014-11-26 | 2016-05-25 | 中国海洋石油总公司 | A kind of casing screw protector cap |
| CN104612600A (en) * | 2015-01-30 | 2015-05-13 | 杨海龙 | Thread protecting cap for well casing |
| CN112678336A (en) * | 2020-12-18 | 2021-04-20 | 中国二十冶集团有限公司 | Protective cap of net rack rod piece high-strength bolt |
Also Published As
| Publication number | Publication date |
|---|---|
| CN104071445B (en) | 2016-08-24 |
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Granted publication date: 20160824 Termination date: 20190625 |
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