CN104611657B - A kind of processing method of titanium alloy casing joint - Google Patents
A kind of processing method of titanium alloy casing joint Download PDFInfo
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- CN104611657B CN104611657B CN201510008850.0A CN201510008850A CN104611657B CN 104611657 B CN104611657 B CN 104611657B CN 201510008850 A CN201510008850 A CN 201510008850A CN 104611657 B CN104611657 B CN 104611657B
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- titanium alloy
- alloy casing
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- joint
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22F—CHANGING THE PHYSICAL STRUCTURE OF NON-FERROUS METALS AND NON-FERROUS ALLOYS
- C22F1/00—Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working
- C22F1/16—Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working of other metals or alloys based thereon
- C22F1/18—High-melting or refractory metals or alloys based thereon
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- Crystallography & Structural Chemistry (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Mechanical Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Preventing Corrosion Or Incrustation Of Metals (AREA)
- Arc Welding In General (AREA)
Abstract
The invention discloses a kind of processing method of titanium alloy casing joint, belong to field of metal material heat processing technology, comprise the following steps：The titanium alloy casing joint pre-processed is put into the work stage in chamber type electric resistance furnace furnace chamber, switch on power, raise the temperature in chamber type electric resistance furnace furnace chamber by adjusting controller and maintain certain temperature, after held for some time, deenergization, makes titanium alloy casing joint slow cooling to room temperature.The present invention handles titanium alloy casing joint by processing step reasonable in design, and the titanium alloy casing joint after processing has good corrosion resistance and wear resistence.
Description
Technical field
The present invention relates to a kind of processing method of titanium alloy casing joint, belong to field of metal material heat processing technology.
Background technology
The interior increase to petroleum resources demand of world wide is, it is necessary to develop increasing Oil/gas Well.Tubing and casing is to bore
The important foundation material of well, completion and safe christmas, typically constitutes from 3/4ths of whole petroleum pipeline consumption figure.Titanium alloy is than strong
Degree is high, and the stress produced of conducting oneself with dignity is smaller, it is possible to decrease stress corrosion inclination, as new casing materials application in oil-gas mining.
Its surface property is further improved using sufacing, the requirement of Petroleum Production and adverse circumstances to tubing and casing performance is met, prolongs
Long life, reduction production cost tool significance.
The content of the invention
The present invention is intended to provide a kind of processing method of titanium alloy casing joint, the titanium alloy casing joint obtained has
Excellent anti-corrosion wear resistence.
A kind of processing method for titanium alloy casing joint that the present invention is provided, comprises the following steps：
(1) titanium alloy casing joint is pre-processed：It will be cleaned, and done using acetone after titanium alloy casing joint surface degreasing
It is dry；
(2) the titanium alloy casing joint pre-processed is put into the work stage in chamber type electric resistance furnace furnace chamber, switched on power；
(3) by adjusting controller, operating current is made to maintain 5~15 A, operating voltage maintains 200~250 V, made
Temperature in chamber type electric resistance furnace furnace chamber raises and is maintained at deenergization after 675~725 DEG C, 9~11 h of insulation, makes titanium alloy
Casing joint slow cooling is to room temperature.
It is preferred that processing method, comprise the following steps：
(1) titanium alloy casing joint is pre-processed：It will be cleaned, and done using acetone after titanium alloy casing joint surface degreasing
It is dry；
(2) the titanium alloy casing joint pre-processed is put into the work stage in chamber type electric resistance furnace furnace chamber, switched on power；
(3) by adjusting controller, operating current is maintained 10 A, operating voltage maintains 220V, pass through above-mentioned behaviour
Work raises the temperature in chamber type electric resistance furnace furnace chamber and is maintained at deenergization after 700 DEG C, 10 h of insulation, makes titanium alloy sleeve pipe
Joint slow cooling is to room temperature.
The titanium alloy casing joint is Ti6Al4V titanium alloy material casing joints.
In hot procedure of the present invention, by artificially adjusting controller, corresponding electric current and magnitude of voltage is set to maintain necessarily
Numerical value：Operating current maintains 10 A, and operating voltage maintains 220V.
The invention belongs to field of metal material heat processing technology, the titanium elements and air in titanium alloy in temperature-rise period are utilized
In oxygen element act on and improve surface property.
Beneficial effects of the present invention：Titanium alloy casing joint, the titanium after processing are handled by processing step reasonable in design
Alloy sleeve joint has good corrosion resistance and wear resistence.
Brief description of the drawings
Fig. 1 is chamber type electric resistance furnace schematic device；
Fig. 2 is the OCP figure of untreated titanium alloy casing joint and processing titanium alloy casing joint；
Fig. 3 is the polarization curve of untreated titanium alloy casing joint and processing titanium alloy casing joint；
Fig. 4 is the wear weight loss figure of untreated titanium alloy casing joint and processing titanium alloy casing joint；
The furnace shell of 1-chamber type electric resistance furnace in figure；The furnace chamber of 2-chamber type electric resistance furnace；3-work stage；4-titanium alloy sleeve pipe connects
Head；5-power supply；6-controller；The OCP figure of titanium alloy casing joint after 7-675 DEG C of processing；At 8-700 DEG C
The OCP figure of titanium alloy casing joint after reason；The OCP figure of titanium alloy casing joint after 9-725 DEG C of processing；
The OCP figure of 10-untreated titanium alloy casing joint；The polarization of titanium alloy casing joint after 11-675 DEG C of processing is bent
Line chart；The polarization curve of titanium alloy casing joint after 12-700 DEG C of processing；Titanium alloy set after 13-725 DEG C of processing
The polarization curve of pipe joint；The polarization curve of 14-untreated titanium alloy casing joint；15-untreated titanium alloy sleeve pipe
The wear weight loss of joint；The wear weight loss of titanium alloy casing joint after 16-675 DEG C of processing；After 17-700 DEG C of processing
The wear weight loss of titanium alloy casing joint；The wear weight loss of titanium alloy casing joint after 18-725 DEG C of processing；P-open circuit electricity
Position；T-testing time；E-corrosion potential；I-corrosion current, G-wear weight loss.
Embodiment
The present invention is further illustrated below by embodiment, but is not limited to following examples.
Now by taking Ti6Ai4V titanium alloy material casing joints as an example, the present invention is implemented, as shown in Figure 1：
Embodiment 1：
Specifically include following steps：
(1) titanium alloy casing joint is pre-processed：It will be cleaned, and done using acetone after titanium alloy casing joint surface degreasing
It is dry；
(2) the titanium alloy casing joint 4 pre-processed is put into the work stage 3 in chamber type electric resistance furnace furnace chamber 2, connects electricity
Source 5；
(3) by adjusting controller 6, operating current is made to maintain 10 A, operating voltage maintains 220 V, by above-mentioned
Operation raises the temperature in chamber type electric resistance furnace furnace chamber 2 and is maintained at deenergization 5 after 675 DEG C, 10 h of insulation, makes titanium alloy
The slow cooling of casing joint 4 is to room temperature.
Embodiment 2：
Temperature is maintained at 700 DEG C to present embodiment in step (3) as different from Example 1, other steps and parameter with
Embodiment 1 is identical.
Embodiment 3：
Temperature is maintained at 725 DEG C to present embodiment in step (3) as different from Example 1, other steps and parameter with
Embodiment 1 is identical.
Under above-mentioned process conditions, the excellent titanium alloy casing joint of anti-corrosion abrasion resistance can be obtained, passes through electrochemistry
Test and wear test handle the corrosion resistance and wear resistence of titanium alloy casing joint to evaluate.Test data is shown in Table 1.
Table 1
As shown in Fig. 2 the OCP figure of the titanium alloy casing joint and untreated titanium alloy casing joint after processing,
CO2In saturation simulation oil field mining liquid, the OCP of 675 DEG C of processing titanium alloy casing joints is 0.222 V；At 700 DEG C
The OCP for managing titanium alloy casing joint is 0.176 V；The OCP of 725 DEG C of processing titanium alloy casing joints is 0.116
V；The OCP of untreated titanium alloy casing joint is -0.381 V, and the casing joint of processing titanium alloy has higher open circuit electricity
Position, wherein the OCP highest of 675 DEG C of processing titanium alloy casing joints.
As shown in figure 3, the polarization curve of the titanium alloy casing joint after untreated titanium alloy casing joint and processing,
CO2In saturation simulation oil field mining liquid, the corrosion potential of 675 DEG C of processing titanium alloy casing joints is 0.018 V, corrosion current
For 7.054 × 10-8 A·cm-2；The corrosion potentials of 700 DEG C of processing titanium alloy casing joints are that 0.005 V, corrosion current are
1.349×10-7 A·cm-2；The corrosion potentials of 725 DEG C of processing titanium alloy casing joints are that -0.373 V, corrosion current are
4.187×10-7 A·cm-2；The corrosion potential of untreated titanium alloy casing joint be -0.450 V, corrosion current be 2.361 ×
10-7 A·cm-2；It can be seen from the figure that, the titanium alloy casing joint after processing has higher corrosion potential and lower corrosion
Electric current, the titanium alloy casing joint after processing has good corrosion resistance, wherein 675 DEG C handle the resistance to of titanium alloy casing joint
Corrosion is best.
As shown in figure 4, the wear weight loss figure of the titanium alloy casing joint after untreated titanium alloy casing joint and processing, not
The wear weight loss for handling titanium alloy casing joint is 0.27 mg；675 DEG C processing titanium alloy casing joints wear weight loss be
0.25 mg；The wear weight loss of 700 DEG C of processing titanium alloy casing joints is 0.12 mg；725 DEG C of processing titanium alloy casing joints
Wear weight loss be 0.15 mg；The wear weight loss of titanium alloy casing joint after processing is below untreated titanium alloy sleeve pipe and connect
Head, the titanium alloy casing joint after explanation processing has good wear resistence, wherein 700 DEG C handle titanium alloy casing joint
Wear resistence is best.
Claims (2)
1. a kind of processing method of titanium alloy casing joint, it is characterised in that：Comprise the following steps：
(1) titanium alloy casing joint is pre-processed：It will be cleaned, and dried using acetone after titanium alloy casing joint surface degreasing；
The titanium alloy casing joint is Ti6Al4V titanium alloy material casing joints；
(2) the titanium alloy casing joint pre-processed is put into the work stage in chamber type electric resistance furnace furnace chamber, switched on power；
(3) by adjusting controller, operating current is made to maintain 10 A, operating voltage maintains 220 V, makes chamber type electric resistance furnace stove
The temperature of intracavitary raises and is maintained at deenergization after 700 DEG C, 10 h of insulation, makes titanium alloy casing joint slow cooling to room temperature；
The OCP of 700 DEG C of processing titanium alloy casing joints is 0.176 V；The corruption of 700 DEG C of processing titanium alloy casing joints
Erosion current potential is that 0.005 V, corrosion current are 1.349 × 10-7 A·cm-2；The abrasion of 700 DEG C of processing titanium alloy casing joints is lost
Weight is 0.12 mg.
2. a kind of processing method of titanium alloy casing joint, it is characterised in that：Comprise the following steps：
(1) titanium alloy casing joint is pre-processed：It will be cleaned, and dried using acetone after titanium alloy casing joint surface degreasing；
The titanium alloy casing joint is Ti6Al4V titanium alloy material casing joints；
(2) the titanium alloy casing joint pre-processed is put into the work stage in chamber type electric resistance furnace furnace chamber, switched on power；
(3) by adjusting controller, operating current is made to maintain 10 A, operating voltage maintains 220 V, makes chamber type electric resistance furnace stove
The temperature of intracavitary raises and is maintained at deenergization after 675 DEG C, 10 h of insulation, makes titanium alloy casing joint slow cooling to room temperature；
The OCP of 675 DEG C of processing titanium alloy casing joints is 0.222 V；The corrosion of 675 DEG C of processing titanium alloy casing joints
Current potential is that 0.018 V, corrosion current are 7.054 × 10-8 A·cm-2；The wear weight loss of 675 DEG C of processing titanium alloy casing joints
For 0.25 mg.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201510008850.0A CN104611657B (en) | 2015-01-08 | 2015-01-08 | A kind of processing method of titanium alloy casing joint |
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| CN201510008850.0A CN104611657B (en) | 2015-01-08 | 2015-01-08 | A kind of processing method of titanium alloy casing joint |
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| CN104611657A CN104611657A (en) | 2015-05-13 |
| CN104611657B true CN104611657B (en) | 2017-10-10 |
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| CN110079754B (en) * | 2019-05-31 | 2021-03-05 | 太原理工大学 | Titanium and titanium alloy surface composite treatment method |
| CN114310180B (en) * | 2021-12-30 | 2024-01-05 | 辽宁美托科技股份有限公司 | Manufacturing and assembling method of novel 35MPa axial extrusion pipeline connecting piece for aviation |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1804102A (en) * | 2006-01-20 | 2006-07-19 | 西南交通大学 | Surface treatment method for improvement of wear-resistance of titanium or titanium alloy |
| CN101690992A (en) * | 2009-11-02 | 2010-04-07 | 哈尔滨工业大学 | Methods for preparing transition joint of different metal materials |
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- 2015-01-08 CN CN201510008850.0A patent/CN104611657B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1804102A (en) * | 2006-01-20 | 2006-07-19 | 西南交通大学 | Surface treatment method for improvement of wear-resistance of titanium or titanium alloy |
| CN101690992A (en) * | 2009-11-02 | 2010-04-07 | 哈尔滨工业大学 | Methods for preparing transition joint of different metal materials |
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