CN104611657A - Machining method for titanium alloy bushing joint - Google Patents
Machining method for titanium alloy bushing joint Download PDFInfo
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- CN104611657A CN104611657A CN201510008850.0A CN201510008850A CN104611657A CN 104611657 A CN104611657 A CN 104611657A CN 201510008850 A CN201510008850 A CN 201510008850A CN 104611657 A CN104611657 A CN 104611657A
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- titanium alloy
- muff joint
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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 machining method for a titanium alloy bushing joint, and belongs to the technical field of metal material thermal treatment. The machining method comprises the following steps: placing a pre-treated titanium alloy casing pipe joint on a workpiece platform in the furnace chamber of a box type resistor furnace; switching on the power; raising the temperature in the furnace chamber by adjusting a controller; keeping a certain temperature for a certain time; switching off the power; cooling the titanium alloy casing pipe joint slowly to the room temperature. The machining method is reasonable in designed processing steps; the titanium alloy casing pipe joint machined according to the method is favorable in corrosion resistance and abrasion resistance.
Description
Technical field
The present invention relates to a kind of working method of titanium alloy muff joint, belong to field of metal material heat processing technology.
Background technology
Increase to hydrocarbon resources demand in world wide, needs to develop increasing Oil/gas Well.Tubing and casing is the important foundation material of drilling well, completion and safe christmas, generally accounts for 3/4ths of whole petroleum pipeline consumption.Titanium alloy specific tenacity is high, deadweight produce stress less, can stress corrosion inclination be reduced, as new casing materials application in oil-gas mining.Adopt sufacing to improve its surface property further, meet oil production and severe environment to the requirement of tubing and casing performance, increase the service life, reduce production cost tool significance.
Summary of the invention
The present invention aims to provide a kind of working method of titanium alloy muff joint, and the titanium alloy muff joint obtained has excellent anti-corrosion resistance to abrasion.
The working method of a kind of titanium alloy muff joint provided by the invention, comprises the following steps:
(1) titanium alloy muff joint pre-treatment: use acetone to clean by after titanium alloy muff joint surface degreasing, and dry;
(2) titanium alloy muff joint good for pre-treatment is put in the work stage of chamber type electric resistance furnace furnace chamber, switch on power;
(3) adjustment control is passed through, make working current maintain 5 ~ 15 A, operating voltage maintains 200 ~ 250 V, the temperature in chamber type electric resistance furnace furnace chamber is raised and remains on 675 ~ 725 DEG C, deenergization after insulation 9 ~ 11 h, makes titanium alloy muff joint slow cooling to room temperature.
Preferred working method, comprises the following steps:
(1) titanium alloy muff joint pre-treatment: use acetone to clean by after titanium alloy muff joint surface degreasing, and dry;
(2) titanium alloy muff joint good for pre-treatment is put in the work stage of chamber type electric resistance furnace furnace chamber, switch on power;
(3) adjustment control is passed through, make working current maintain 10 A, operating voltage maintains 220V, by aforesaid operations, the temperature in chamber type electric resistance furnace furnace chamber is raised and remains on 700 DEG C, be incubated deenergization after 10 h, make titanium alloy muff joint slow cooling to room temperature.
Described titanium alloy muff joint is the muff joint of Ti6Al4V titanium alloy material.
In hot procedure of the present invention, by artificial adjustment control, corresponding electric current and magnitude of voltage is made to maintain certain numerical value: working current maintains 10 A, and operating voltage maintains 220V.
The invention belongs to field of metal material heat processing technology, utilize the titanium elements in temperature-rise period in titanium alloy and the oxygen element in air to be used for improving surface property.
Of the present invention
beneficial effect: by processing step process titanium alloy muff joint reasonable in design, the titanium alloy muff joint after process has good solidity to corrosion and resistance to abrasion.
Accompanying drawing explanation
Fig. 1 is chamber type electric resistance furnace device schematic diagram;
Fig. 2 is the open circuit potential figure of untreated titanium alloy muff joint and the muff joint of process titanium alloy;
Fig. 3 is the polarization curve of untreated titanium alloy muff joint and the muff joint of process titanium alloy;
Fig. 4 is the wear weight loss figure of untreated titanium alloy muff joint and the muff joint of process titanium alloy;
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; The muff joint of 4-titanium alloy; 5-power supply; 6-controller; The open circuit potential figure of the titanium alloy muff joint after 7-675 DEG C of process; The open circuit potential figure of the titanium alloy muff joint after 8-700 DEG C of process; The open circuit potential figure of the titanium alloy muff joint after 9-725 DEG C of process; The open circuit potential figure of 10-untreated titanium alloy muff joint; The polarization curve of the titanium alloy muff joint after 11-675 DEG C of process; The polarization curve of the titanium alloy muff joint after 12-700 DEG C of process; The polarization curve of the titanium alloy muff joint after 13-725 DEG C of process; The polarization curve of 14-untreated titanium alloy muff joint; The wear weight loss of 15-untreated titanium alloy muff joint; The wear weight loss of the titanium alloy muff joint after 16-675 DEG C of process; The wear weight loss of the titanium alloy muff joint after 17-700 DEG C of process; The wear weight loss of the titanium alloy muff joint after 18-725 DEG C of process; P-open circuit potential; T-test duration; E-corrosion potential; I-corrosion current, G-wear weight loss.
Embodiment
Further illustrate the present invention below by embodiment, but be not limited to following examples.
Now for the muff joint of Ti6Ai4V titanium alloy material, the present invention is implemented, as shown in Figure 1:
Embodiment 1:
Specifically comprise the following steps:
(1) titanium alloy muff joint pre-treatment: use acetone to clean by after titanium alloy muff joint surface degreasing, and dry;
(2) titanium alloy muff joint 4 good for pre-treatment is put in the work stage 3 of chamber type electric resistance furnace furnace chamber 2, switch on power 5;
(3) by adjustment control 6, make working current maintain 10 A, operating voltage maintains 220 V, by aforesaid operations, the temperature in chamber type electric resistance furnace furnace chamber 2 is raised and remains on 675 DEG C, be incubated deenergization 5 after 10 h, make titanium alloy muff joint 4 slow cooling to room temperature.
Embodiment 2:
Present embodiment as different from Example 1 in step (3) temperature remain on 700 DEG C, other step and parameter identical with embodiment 1.
Embodiment 3:
Present embodiment as different from Example 1 in step (3) temperature remain on 725 DEG C, other step and parameter identical with embodiment 1.
Under above-mentioned processing condition, the titanium alloy muff joint of anti-corrosion abrasion resistance excellence can be obtained, be evaluated solidity to corrosion and the resistance to abrasion of the muff joint of process titanium alloy by electro-chemical test and wear test.Test data is in table 1.
Table 1
As shown in Figure 2, the open circuit potential figure of the titanium alloy muff joint after process and untreated titanium alloy muff joint, at CO
2in saturation simulation oil field mining liquid, the open circuit potential of 675 DEG C of process titanium alloys muff joint is 0.222 V; The open circuit potential of 700 DEG C of process titanium alloys muff joint is 0.176 V; The open circuit potential of 725 DEG C of process titanium alloys muff joint is 0.116 V; The open circuit potential of untreated titanium alloy muff joint is-0.381 V, and the muff joint of process titanium alloy has higher open circuit potential, and wherein the open circuit potential of 675 DEG C of process titanium alloys muff joint is the highest.
As shown in Figure 3, the polarization curve of untreated titanium alloy muff joint and the titanium alloy muff joint after processing, at CO
2in saturation simulation oil field mining liquid, the corrosion potential of 675 DEG C of process titanium alloys muff joint is 0.018 V, corrosion current is 7.054 × 10
-8acm
-2; The corrosion potential of 700 DEG C of process titanium alloys muff joint is 0.005 V, corrosion current is 1.349 × 10
-7acm
-2; The corrosion potential of 725 DEG C of process titanium alloys muff joint is-0.373 V, corrosion current is 4.187 × 10
-7acm
-2; The corrosion potential of untreated titanium alloy muff joint is-0.450 V, corrosion current is 2.361 × 10
-7acm
-2; Can find out in figure, the titanium alloy muff joint after process has higher corrosion potential and lower corrosion current, and the titanium alloy muff joint after process has good solidity to corrosion, and wherein the solidity to corrosion of 675 DEG C of process titanium alloys muff joint is best.
As shown in Figure 4, the wear weight loss figure of untreated titanium alloy muff joint and the titanium alloy muff joint after processing, the wear weight loss of untreated titanium alloy muff joint is 0.27 mg; The wear weight loss of 675 DEG C of process titanium alloys muff joint is 0.25 mg; The wear weight loss of 700 DEG C of process titanium alloys muff joint is 0.12 mg; The wear weight loss of 725 DEG C of process titanium alloys muff joint is 0.15 mg; The wear weight loss of the titanium alloy muff joint after process, all lower than untreated titanium alloy muff joint, illustrates that the titanium alloy muff joint after process has good resistance to abrasion, and wherein the resistance to abrasion of 700 DEG C of process titanium alloys muff joint is best.
Claims (3)
1. a working method for titanium alloy muff joint, is characterized in that: comprise the following steps:
(1) titanium alloy muff joint pre-treatment: use acetone to clean by after titanium alloy muff joint surface degreasing, and dry;
(2) titanium alloy muff joint good for pre-treatment is put in the work stage of chamber type electric resistance furnace furnace chamber, switch on power;
(3) adjustment control is passed through, make working current maintain 5 ~ 15 A, operating voltage maintains 200 ~ 250 V, the temperature in chamber type electric resistance furnace furnace chamber is raised and remains on 675 ~ 725 DEG C, deenergization after insulation 9 ~ 11 h, makes titanium alloy muff joint slow cooling to room temperature.
2. the working method of titanium alloy muff joint according to claim 1, is characterized in that: comprise the following steps:
(1) titanium alloy muff joint pre-treatment: use acetone to clean by after titanium alloy muff joint surface degreasing, and dry;
(2) titanium alloy muff joint good for pre-treatment is put in the work stage of chamber type electric resistance furnace furnace chamber, switch on power;
(3) by adjustment control, make working current maintain 10 A, operating voltage maintains 220 V, the temperature in chamber type electric resistance furnace furnace chamber is raised and remains on 700 DEG C, is incubated deenergization after 10 h, makes titanium alloy muff joint slow cooling to room temperature.
3. the working method of titanium alloy muff joint according to claim 1, is characterized in that: described titanium alloy muff joint is the muff joint of Ti6Al4V titanium alloy material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510008850.0A CN104611657B (en) | 2015-01-08 | 2015-01-08 | A kind of processing method of titanium alloy casing joint |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| 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 true CN104611657A (en) | 2015-05-13 |
| CN104611657B CN104611657B (en) | 2017-10-10 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110079754A (en) * | 2019-05-31 | 2019-08-02 | 太原理工大学 | A kind of titanium or titanium alloy surface recombination processing method |
| CN114310180A (en) * | 2021-12-30 | 2022-04-12 | 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 |
-
2015
- 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 |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110079754A (en) * | 2019-05-31 | 2019-08-02 | 太原理工大学 | A kind of titanium or titanium alloy surface recombination processing method |
| CN114310180A (en) * | 2021-12-30 | 2022-04-12 | 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 |
| 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 |
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