CN205349248U - Plasma arc case hardening's wear -resisting tool joint - Google Patents
Plasma arc case hardening's wear -resisting tool joint Download PDFInfo
- Publication number
- CN205349248U CN205349248U CN201620032233.4U CN201620032233U CN205349248U CN 205349248 U CN205349248 U CN 205349248U CN 201620032233 U CN201620032233 U CN 201620032233U CN 205349248 U CN205349248 U CN 205349248U
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- China
- Prior art keywords
- tool joint
- thread
- screw thread
- processing
- plasma arc
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- 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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Abstract
The utility model discloses a plasma arc case hardening's wear -resisting tool joint, including external screw thread tool joint and internal thread tool joint, the processing of external screw thread tool joint has the external screw thread, and the part of not processing the screw thread is surperficial for glossy excircle, the processing of internal thread tool joint has the internal thread, and the surface is glossy excircle surface, and crest, root of thread and the side harden zone degree of depth of external screw thread are 0.1~0.4mm, and hardness is 40~50HRC, internal screw thread crest, root of thread and the side harden zone degree of depth are 0.1~0.4mm, and hardness is 40~50HRC, the utility model discloses the processing cost is low, convenient operation, and the wearability is high, can effectively reduce the screw thread thread gluing, prolongs tool joint's life.
Description
Technical field
The surface heat treatment process field of this utility model tool joint, the abrasion-proof drill rod joint of especially a kind of Plasma Arc Surface Hardening.
Background technology
At present, at oil, in gas drilling and non-excavating construction process, drilling rod is as main drilling tool, shackle need to be gone up frequently, on unload oil of comparing in process, gas drilling, drill rod thread is easier to abrasion and thread gluing failure phenomenon occurs, the service life of drilling rod reduces, extend drilling well and non-excavating construction cycle, bigger economic loss is brought to no-dig technique and wellbore construction, Authorization Notice No. is the open a kind of laser surface hardening tool joint of CN202348144U, this tool joint adopts laser to carry out Surface hardened layer, for reducing cost, internal threads and externally threaded crest, side and surface carry out hardening processing, surface is all undressed to foreign round.
Utility model content
This utility model purpose is to provide the abrasion-proof drill rod joint of a kind of Plasma Arc Surface Hardening, and processing cost is low, easy to operate, and wearability is high, is effectively reduced Thread-sticking, extends the service life of tool joint.
In order to solve above-mentioned technical problem, the technical solution adopted in the utility model is:
The abrasion-proof drill rod joint of a kind of Plasma Arc Surface Hardening, including tool joint pin and tool joint box, tool joint pin processing has external screw thread, it does not have the part of processing screw thread is smooth outer round surface；Tool joint box processing has female thread, and outer surface is smooth outer round surface, all hardens with side at the bottom of outer round surface, crest, tooth, and at the bottom of externally threaded crest, tooth and hardening zone, the side degree of depth is 0.1～0.4mm, and hardness is 40～50HRC；At the bottom of the crest of female thread, tooth and hardening zone, the side degree of depth is 0.1～0.4mm, and hardness is 40～50HRC.
Further, the hardening zone degree of depth of outer round surface is 0.4～1.5mm, and hardness is 53～61HRC.
The beneficial effects of the utility model are:
This utility model is by carrying out Plasma Arc Surface Hardening to tool joint, and processing cost is low, easy to operate, and wearability is high, is effectively reduced Thread-sticking, extends the service life of tool joint.
Accompanying drawing explanation
Below in conjunction with the drawings and specific embodiments, this utility model is described in further detail.
Fig. 1 is this utility model schematic diagram.
Fig. 2 is this utility model partial schematic diagram.
Detailed description of the invention
Below in conjunction with accompanying drawing, embodiment of the present utility model is described in detail, but the multitude of different ways that this utility model can be defined by the claims and cover is implemented.
As depicted in figs. 1 and 2, this utility model discloses the abrasion-proof drill rod joint of a kind of Plasma Arc Surface Hardening, including tool joint pin A and tool joint box B, tool joint pin A processing has external screw thread 3, not processing the part of screw thread is smooth outer round surface 1, tool joint box B processing has female thread 4, and outer surface is that the mode that smooth outer round surface 2, tool joint pin A and tool joint box B are threaded connection links together.Adopting outer round surface 1 and the outer round surface 2 of Plasma Arc Surface Hardening tool joint pin A and tool joint box B, the hardening zone degree of depth is 0.4～1.5mm, and hardness is 53～61HRC, is effectively improved the wearability of tool joint outer round surface.The external screw thread of Plasma Arc Surface Hardening tool joint pin A, at the bottom of externally threaded crest 5, tooth 7 and the hardening zone degree of depth of side 6 be 0.1～0.4mm, hardness is 40～50HRC；The female thread of Plasma Arc Surface Hardening tool joint box B, at the bottom of the crest 7 of female thread, tooth 5 and the hardening zone degree of depth of side 6 be 0.1～0.4mm, hardness is 40～50HRC, employing Plasma Arc Surface Hardening processes, external screw thread 3 and female thread 4 are without deformation, surface has suitable hardness, is effectively improved external screw thread 3 and female thread 4 sticky thread resistance energy in use.
Compared to the tool joint adopting laser surface hardening, the disposable input cost of this utility model reduces by 2/3～1/2, and operating cost reduces by 2/3, and hardening region is more extensive, includes outer round surface, is effectively improved sticky thread resistance energy in use.
Above-described this utility model embodiment, is not intended that the restriction to this utility model protection domain.Any amendment, equivalent replacement and improvement etc. made within spirit of the present utility model and principle, should be included within claims of the present utility model.
Claims (2)
1. an abrasion-proof drill rod joint for Plasma Arc Surface Hardening, including tool joint pin and tool joint box, it is characterised in that tool joint pin processing has external screw thread, it does not have the part of processing screw thread is smooth outer round surface；Tool joint box processing has female thread, and outer surface is smooth outer round surface, all hardens with side at the bottom of outer round surface, crest, tooth, and at the bottom of externally threaded crest, tooth and hardening zone, the side degree of depth is 0.1～0.4mm, and hardness is 40～50HRC；At the bottom of the crest of female thread, tooth and hardening zone, the side degree of depth is 0.1～0.4mm, and hardness is 40～50HRC.
2. the abrasion-proof drill rod joint of a kind of Plasma Arc Surface Hardening according to claim 1, it is characterised in that the hardening zone degree of depth of outer round surface is 0.4～1.5mm, and hardness is 53～61HRC.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620032233.4U CN205349248U (en) | 2016-01-12 | 2016-01-12 | Plasma arc case hardening's wear -resisting tool joint |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620032233.4U CN205349248U (en) | 2016-01-12 | 2016-01-12 | Plasma arc case hardening's wear -resisting tool joint |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205349248U true CN205349248U (en) | 2016-06-29 |
Family
ID=56175141
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620032233.4U Expired - Fee Related CN205349248U (en) | 2016-01-12 | 2016-01-12 | Plasma arc case hardening's wear -resisting tool joint |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205349248U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110628994A (en) * | 2019-10-30 | 2019-12-31 | 澳普洛钻探工具(无锡)有限公司 | Production process of sealing drill rod |
-
2016
- 2016-01-12 CN CN201620032233.4U patent/CN205349248U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110628994A (en) * | 2019-10-30 | 2019-12-31 | 澳普洛钻探工具(无锡)有限公司 | Production process of sealing drill rod |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20160629 Termination date: 20170112 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |