CN104071445B - Thread protecting cap and manufacture method thereof - Google Patents
Thread protecting cap and manufacture method thereof Download PDFInfo
- Publication number
- CN104071445B CN104071445B CN201410286658.3A CN201410286658A CN104071445B CN 104071445 B CN104071445 B CN 104071445B CN 201410286658 A CN201410286658 A CN 201410286658A CN 104071445 B CN104071445 B CN 104071445B
- Authority
- CN
- China
- Prior art keywords
- cap body
- thread
- cap
- protecting cap
- thread protecting
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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Classifications
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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
Abstract
The present invention relates to a kind of thread protecting cap and manufacture method thereof, described thread protecting cap is taper barrel-like structure, is provided with screw thread, the component of described thread protecting cap and percentage by weight at its outer wall or inwall and is: silicon 23.2%, ferrum 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 aluminum.Manufacture method: aluminum or aluminium scrap are poured in middle frequency furnace and melts, pour the aluminium alloy after fusing into vertical or horizontal aluminum alloy press casting machine, during the full taper tubbiness model cavity of liquid stream fusion, extrude by the extruding force of 200～300 tons, thread protecting cap blank is obtained after cooling, thread protecting cap blank is polished, i.e. can get thread protecting cap finished product at its outer wall or inwall Pick Wire button.The present invention uses aluminium alloy to make, lightweight, and intensity is high, good toughness, and by one-step die casting, manufacture method is simple, and production cost is low, and used thread protecting cap is easy 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 manufacturer thereof
Method.
Background technology
Thread protecting cap is widely used in oil well operation instrument, is sleeved on drilling rod, drill collar in order to protect screw thread position
Protect.Existing thread protecting cap is mainly made up of following several materials: 1, steel plate, although the price of steel is relatively cheap, but processing work
Sequence is many, generally just can make through operations such as the punching press-lathe process-antirust treatment of blanking-heating-punching press-reheating-again, logical
If Chang Yici not molding, it is also performed to secondary operations, improves production cost, as used coal heating, then environment can be made
Become serious pollution, it addition, the processing and utilization rate of steel plate is 80%, cause the waste of material of about 20%.2, plastic-steel, through blanking-
The steel ring of the inside is carried out by the volume punching press of circle-punching press-again, more integral with plastic injection, cheap unlike steel of the cost of plastic-steel, its
Manufacturing procedure is many, and manufacturing cost is high, steel, moulds decomposition difficulty, is not easy to recycle.3, plastics, manufacturing procedure is few, the most once
Injection mo(u)lding, low price, production cost is low, but plastics are cold, crisp for winter, are easily damaged, and summer is hot, and thread protecting cap easily becomes
Shape, if recycling, post bake can reduce the intensity of plastics, needs to add new material and enters.
Summary of the invention
The technical problem to be solved is to overcome above-mentioned deficiency, it is provided that a kind of lightweight, it is simple to workman assembles, by force
Degree is high, the thread protecting cap of good toughness, and this thread protecting cap manufacture method is simple, and production cost is low, and recovery utilization rate is high.
Technical scheme: a kind of thread protecting cap, including cap body, described cap body is taper barrel-like structure, cap body interior
Wall is provided with the female thread matched with drill rod end external screw thread, and the port outer wall of cap body upper end extends outward along the cross section of pipe
One convex edge, 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, is used for protecting drill rod end
Screw thread.
Described cap body is aluminum alloy material, and cap body component and percentage by weight be: silicon 23.2%, ferrum 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 aluminum.
Described cap body is aluminium alloy integral casting forming.
The another kind of structure of described thread protecting cap, including cap body, described cap body is taper barrel-like structure, and the upper end of cap body is loudspeaker
Mouth structure, the outer wall of cap body lower end is provided with the external screw thread that the female thread with drilling rod connecting hole inwall matches, the bottom of cap body
Being provided with a square through hole, the thread protecting cap of this structure is internal thread protector cap, for protecting drilling rod to connect the screw thread in shrinkage pool.
Described cap body is aluminum alloy material, and cap body component and percentage by weight be: silicon 23.2%, ferrum 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 aluminum.
The manufacture method of above-mentioned thread protecting cap, comprises the following steps:
(1) by middle frequency furnace homoiothermic to 500～600 DEG C, the electrolytic aluminium got ready or aluminium scrap are poured in middle frequency furnace and carries out
Fusing, by monitoring, adjusts the chemical composition needed for aluminium alloy, to siliceous 23.2%, ferrum 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 melted is standby；
(2) pouring the liquation of step (1) into vertical or horizontal aluminum alloy press casting machine, liquid stream fusion completely arrives the cone of die casting machine
Shape tubbiness model cavity, extrudes model by the extruding force of 200 or 300 tons, obtains described thread protecting cap blank after cooling；
(3) by step (2) prepare thread protecting cap blank polish, at its outer wall or inwall Pick Wire button, thread protector
Cap finished product.
The present invention compared with prior art has the advantages that
1, the present invention uses aluminium alloy to be processed and formed at one time, lightweight, about 1/3rd of steel plate weight, and workman assembles
Easily, being effectively reduced the labor intensity of workman, and intensity is high, good toughness, intensity is up to 260～270MPa/mm2, elongation percentage
It is 3%.
2, the production cost of product is low, and the cost of the thread protecting cap of steel is 70 yuan, and the cost of aluminium alloy thread protecting cap is 60
Unit, reduces cost 10%, and the recovery utilization rate of aluminium alloy is up to 100%.
3, process for machining and manufacturing is simple, effectively reduces production cost, decreases environmental pollution.
Accompanying drawing explanation
Fig. 1 is the structural representation of the present invention.
Fig. 2 is the another kind of structural representation of the present invention.
In figure: 1-cap body, 2-convex edge, 3-female thread, 4-through hole, 5-external screw thread.
Detailed description of the invention
Embodiment 1
A kind of thread protecting cap, as it is shown in figure 1, include cap body 1, described cap body is taper barrel-like structure, and the inwall of cap body is provided with
The female thread 3 matched with drill rod end external screw thread, the port outer wall of cap body upper end extends outward one along the cross section of pipe
Convex edge 2, the bottom of cap body is provided with a square through hole 4, and the thread protecting cap of this structure is external thread protector cap, for protecting drill rod end
Screw thread.During use, thread protecting cap is screwed in drilling rod the position of screw thread, so can effectively protect screw thread to be not damaged by.
Described cap body uses aluminum alloy material, and cap body component and percentage by weight be: silicon 23.2%, ferrum 0.5%, copper 4%, manganese
0.9%, magnesium 1.8%, chromium 0.1%, zinc 0.25%, titanium 0.15%, aluminum 69.1%.
Embodiment 2
A kind of thread protecting cap, as in figure 2 it is shown, include cap body 1, described cap body 1 is taper barrel-like structure, the upper end of cap body 1 in
Bell-mouth structure of air, the outer wall of cap body lower end is provided with the external screw thread 5 that the female thread with drilling rod connecting hole inwall matches, cap body 1
Bottom is provided with a square through hole 4, and the thread protecting cap of this structure is internal thread protector cap, for protecting drilling rod to connect the screw thread in shrinkage pool.
During use, thread protecting cap is screwed in the shrinkage pool of jointed rod, so can effectively protect screw thread to be not damaged by.
Described cap body is aluminum alloy material, and cap body component and percentage by weight be: silicon 23.2%, ferrum 0.5%, copper 4.9%, manganese
0.5%, magnesium 1.2%, chromium 0.1%, zinc 0.25%, titanium 0.15%, aluminum 69.2%.
The manufacture method of above-mentioned thread protecting cap, comprises the following steps:
(1) by middle frequency furnace homoiothermic to 500～600 DEG C, the electrolytic aluminium got ready or aluminium scrap are poured in middle frequency furnace and carries out
Fusing, by monitoring, adjusts the chemical composition needed for aluminium alloy, chemical composition required for aluminium alloy to embodiment 1 or 2,
The molten aluminium alloy melted is standby；
(2) pouring the liquation of step (1) into vertical or horizontal aluminum alloy press casting machine, liquid stream fusion completely arrives the cone of die casting machine
Shape tubbiness model cavity, extrudes model by the extruding force of 300 tons, obtains described thread protecting cap blank after cooling；
(3) by step (2) prepare thread protecting cap blank polish, at its outer wall or inwall Pick Wire button, thread protector
Cap finished product.
Claims (4)
1. a thread protecting cap, including cap body, is characterized in that described cap body is taper barrel-like structure, and the inwall of cap body is provided with and drilling rod
The female thread that end external screw thread matches, the port outer wall of cap body upper end extends outward a convex edge, cap along the cross section of pipe
The bottom of body is provided with a square through hole；
Described cap body is aluminum alloy material, and cap body component and percentage by weight be: silicon 23.2%, ferrum 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 aluminum.
Thread protecting cap the most according to claim 1, is characterized in that described cap body is aluminium alloy integral die-cast molding.
3. a thread protecting cap, including cap body, is characterized in that described cap body is taper barrel-like structure, and the upper end of cap body is horn mouth knot
Structure, the outer wall of cap body lower end is provided with the external screw thread that the female thread with drilling rod connecting hole inwall matches, and the bottom of cap body is provided with one
Individual square through hole；
Described cap body is aluminum alloy material, and cap body component and percentage by weight be: silicon 23.2%, ferrum 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 aluminum.
4. a method for thread protecting cap described in manufacturing claims 1 or 3, is characterized in that comprising the following steps:
(1) by middle frequency furnace homoiothermic to 500～600 DEG C, the electrolytic aluminium got ready or aluminium scrap are poured in middle frequency furnace and melt,
By monitoring, adjust the chemical composition needed for aluminium alloy, to siliceous 23.2%, ferrum 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 melted is standby；
(2) pouring the liquation of step (1) into vertical or horizontal aluminum alloy press casting machine, liquid stream fusion completely arrives the cone tank of die casting machine
Shape model cavity, extrudes model by the extruding force of 200 or 300 tons, obtains described thread protecting cap blank after cooling；
(3) by step (2) prepare thread protecting cap blank polish, at its outer wall or inwall Pick Wire button, thread protecting cap become
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 CN104071445A (en) | 2014-10-01 |
| CN104071445B true CN104071445B (en) | 2016-08-24 |
Family
ID=51593125
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 |
|---|---|
| CN (1) | CN104071445B (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
Family Cites Families (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 |
| DE19634508C1 (en) * | 1996-08-27 | 1998-03-26 | Daimler Benz Ag | Covering vehicle wheels with light alloy rims during long transport |
| 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 |
| WO2009132388A1 (en) * | 2008-04-30 | 2009-11-05 | Commonwealth Scientific And Industrial Research Organisation | 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 |
-
2014
- 2014-06-25 CN CN201410286658.3A patent/CN104071445B/en not_active Expired - Fee Related
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| Publication number | Publication date |
|---|---|
| CN104071445A (en) | 2014-10-01 |
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