CN103290346A - Strengthening and toughening process of bearing titanium alloy - Google Patents
Strengthening and toughening process of bearing titanium alloy Download PDFInfo
- Publication number
- CN103290346A CN103290346A CN2013102015308A CN201310201530A CN103290346A CN 103290346 A CN103290346 A CN 103290346A CN 2013102015308 A CN2013102015308 A CN 2013102015308A CN 201310201530 A CN201310201530 A CN 201310201530A CN 103290346 A CN103290346 A CN 103290346A
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- Prior art keywords
- titanium alloy
- electrical heater
- electric heating
- temperature
- heating furnace
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Links
- 229910001069 Ti alloy Inorganic materials 0.000 title claims abstract description 39
- 238000000034 method Methods 0.000 title claims abstract description 11
- 238000005728 strengthening Methods 0.000 title abstract 3
- XKRFYHLGVUSROY-UHFFFAOYSA-N Argon Chemical compound [Ar] XKRFYHLGVUSROY-UHFFFAOYSA-N 0.000 claims abstract description 36
- 229910052786 argon Inorganic materials 0.000 claims abstract description 18
- 238000009423 ventilation Methods 0.000 claims abstract description 18
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims abstract description 12
- 239000001301 oxygen Substances 0.000 claims abstract description 12
- 229910052760 oxygen Inorganic materials 0.000 claims abstract description 12
- 238000010438 heat treatment Methods 0.000 claims abstract description 10
- 238000001816 cooling Methods 0.000 claims abstract description 8
- 238000005498 polishing Methods 0.000 claims abstract description 6
- 239000007789 gas Substances 0.000 claims description 20
- 238000009413 insulation Methods 0.000 claims description 7
- 238000012423 maintenance Methods 0.000 claims description 5
- 230000002787 reinforcement Effects 0.000 claims description 4
- 229910045601 alloy Inorganic materials 0.000 abstract description 3
- 239000000956 alloy Substances 0.000 abstract description 3
- 238000005485 electric heating Methods 0.000 abstract 9
- 238000004321 preservation Methods 0.000 abstract 1
- 230000003647 oxidation Effects 0.000 description 7
- 238000007254 oxidation reaction Methods 0.000 description 7
- 239000012535 impurity Substances 0.000 description 3
- 230000015572 biosynthetic process Effects 0.000 description 2
- 239000011248 coating agent Substances 0.000 description 2
- 238000000576 coating method Methods 0.000 description 2
- 239000011159 matrix material Substances 0.000 description 2
- 238000010583 slow cooling Methods 0.000 description 2
- 229910000897 Babbitt (metal) Inorganic materials 0.000 description 1
- MYMOFIZGZYHOMD-UHFFFAOYSA-N Dioxygen Chemical compound O=O MYMOFIZGZYHOMD-UHFFFAOYSA-N 0.000 description 1
- 238000005299 abrasion Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 229910000734 martensite Inorganic materials 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000010301 surface-oxidation reaction Methods 0.000 description 1
Landscapes
- Solid-Phase Diffusion Into Metallic Material Surfaces (AREA)
- Sliding-Contact Bearings (AREA)
Abstract
A strengthening and toughening process of bearing titanium alloy belongs to a strengthening and toughening process of alloy. The specific operation is as follows: a. polishing the titanium alloy bearing, then placing the titanium alloy bearing into an electric heating furnace at room temperature, and vacuumizing the electric heating furnace; b. introducing argon into the electric heating furnace until the pressure in the electric heating furnace is 0.01-0.015 MPa, and stopping introducing the argon; c. electrifying and heating the electric heating furnace until the temperature is 400-600 ℃, preserving the heat for 15-25 minutes, extracting argon during heat preservation, introducing oxygen with the purity of 99.99%, and keeping the oxygen pressure in the electric heating furnace at 0.01-0.015 MPa at the ventilation flow rate of 10-60 SLM; d. heating the electric heating furnace to 950-1250 ℃; e. preserving the heat for 0.5-5 hours; f. cooling, wherein the cooling rate is 4-6 ℃/min and the temperature is reduced to 500 ℃; g. stopping ventilation, and closing a ventilation valve and a heating power supply of the electric heating furnace; h. and taking out the titanium alloy bearing when the indoor temperature of the electric heating furnace is reduced to the room temperature. The advantages are that: the surface hardness of the titanium alloy bearing is high; the thickness of the oxide layer is controllable; the titanium alloy bearing has good wear resistance.
Description
Technical field
The present invention relates to a kind of reinforcement toughening process of alloy, particularly a kind of reinforcement toughening process of bearing titanium alloy.
Background technology
The TC11 alloy is a kind of martensite type alpha+beta diphasic titanium alloy, and advantages such as having specific tenacity height, middle warm nature can be good, corrosion resistance and good are widely used at aerospace field.But because there is the surface abrasion resistance problem in actual applications in it, wearing and tearing aggravation in use.TC11 is as a kind of bearing titanium alloy, and its wear resisting property will limit the application of TC11 greatly.
It is to improve a kind of method of titanium alloy surface hardness that high temperature oxidation process is carried out on the TC11 surface.At present, carry out surface oxidation treatment at titanium alloy and have complex process, the treatment time is long, and the zone of oxidation hardness that obtains simultaneously is not high, and zone of oxidation comes off easily.Titanium Alloys at High Temperature is handled usually under atmospheric environment and since except oxygen, also contain in the atmospheric environment other a large amount of can with the material of titanium alloy reaction, and then be formed with the zone of oxidation of impurity at titanium alloy surface, influence the use properties of titanium alloy.
Summary of the invention
Technical problem: the objective of the invention is to overcome the deficiency in the prior art, a kind of strength-toughening process of bearing titanium alloy is provided, solve titanium alloy and under atmospheric environment, pass through pyroprocessing, in the zone of oxidation of titanium alloy surface formation impurity, influence the problem of titanium alloy use properties.
Technical scheme: the objective of the invention is to provide a kind of technology of bearing titanium alloy highly malleablized, concrete operations are as follows:
A, at first to TC11 titanium alloy bearing sanding and polishing, at room temperature put into electrical heater then, electrical heater is evacuated to 10
-2Pa～10
-3Pa;
B, to feed purity in the electrical heater be 99.99% argon gas, and the ventilation flow velocity is 10～30SLM, to the electrical heater internal gas pressure be 0.01～0.015MPa, stop to feed argon gas;
C, to electrical heater energising heating, to temperature be 400～600 ℃, be incubated 15～25 minutes, extract argon gas during insulation out, and to feed purity be 99.99% oxygen, ventilation flow velocity is 10～60SLM, the interior oxygen pressure of maintenance electrical heater is 0.01～0.015MPa;
D, the electrical heater temperature is heated to 950～1250 ℃, temperature rise rate is 4～6 ℃/min;
E, insulation 0.5～5 hour;
F, cooling, rate of temperature fall is 4～6 ℃/min, is down to 500 ℃;
G, stop ventilation, and close the heating power supply of breather valve and electrical heater;
H, when treating that the electrical heater room temp is down to room temperature the titanium alloy bearing is taken out.
Beneficial effect owing to adopted such scheme, is placed on titanium alloy in the oxygen atmosphere, has avoided titanium alloy directly to contact with atmosphere, and then has prevented the formation of impurity in the zone of oxidation; Be incubated in high-temperature part, between coating and matrix, form good oxygen gradient and distribute, and increase thickness of oxide layer; Employing slow cooling cooling can effectively reduce the expansion stress that forms between the coating that caused by the temperature difference and the matrix, and can effectively improve the tissue of titanium alloy.By improving technology, bearing titanium alloy T C11 is placed in the environment of pure oxygen, the mode by high temperature oxidation, slow cooling forms thick and compact oxide on the TC11 surface, has very high hardness and wear resistance, has promoted the application of TC11 as bearing metal greatly.
Advantage: titanium alloy bearing surface hardness height; Oxidated layer thickness is controlled; Titanium alloy bearing wear resistance is good.
Embodiment
Embodiment 1: the TC11 titanium alloy bearing behind the sanding and polishing is at room temperature put into electrical heater, be evacuated to 10
-3Pa; Feed purity and be 99.99% argon gas, ventilation flow velocity is 20SLM, described SLM be liter under the normal conditions/minute unit, to the electrical heater internal gas pressure be 0.01MPa, stop to feed argon gas; To electrical heater heating, to temperature be 450 ℃, be incubated 20 minutes, extract argon gas during insulation out, and to feed purity be 99.99% oxygen, the ventilation flow velocity is 20SLM, maintenance electrical heater internal pressure is 0.015MPa; The electrical heater temperature is heated to 1050 ℃, and temperature rise rate is 5 ℃/min; Be incubated 1 hour; Cooling, rate of temperature fall is 5 ℃/min, is down to 500 ℃; Stop ventilation, and close breather valve and electrical heater power supply, when treating that the electrical heater room temp is down to room temperature the titanium alloy bearing is taken out.
Embodiment 2: the TC11 titanium alloy bearing behind the sanding and polishing is placed in the electrical heater, is evacuated to 10
-3Pa; Feed purity and be 99.99% argon gas, the ventilation flow velocity is 20SLM, to the electrical heater internal gas pressure be 0.01MPa, stop to feed argon gas; To electrical heater heating, to temperature be 450 ℃, be incubated 20 minutes, extract argon gas during insulation out, and to feed purity be 99.99% oxygen, the ventilation flow velocity is 20SLM, maintenance electrical heater internal pressure is 0.015MPa; The electrical heater temperature is heated to 1020 ℃, and temperature rise rate is 5 ℃/min; Be incubated 1.5 hours; Cooling, rate of temperature fall is 5 ℃/min, is down to 500 ℃; Stop ventilation, and close breather valve and electrical heater power supply, when treating that the electrical heater room temp is down to room temperature the titanium alloy bearing is taken out.
Embodiment 3: the TC11 titanium alloy bearing behind the sanding and polishing is placed in the electrical heater, is evacuated to 10
-3Pa; Feed purity and be 99.99% argon gas, the ventilation flow velocity is 20SLM, to the electrical heater internal gas pressure be 0.01MPa, stop to feed argon gas; To electrical heater heating, to temperature be 450 ℃, be incubated 20 minutes, extract argon gas during insulation out, and to feed purity be 99.99% oxygen, the ventilation flow velocity is 20SLM, maintenance electrical heater internal pressure is 0.015MPa; The electrical heater temperature is heated to 1050 ℃, and temperature rise rate is 5 ℃/min; Be incubated 1.5 hours; Cooling, rate of temperature fall is 5 ℃/min, is down to 500 ℃; Stop ventilation, and close breather valve and electrical heater power supply, when treating that the electrical heater room temp is down to room temperature the titanium alloy bearing is taken out.
Claims (1)
1. the reinforcement toughening process of a bearing titanium alloy is characterized in that:, concrete operations are as follows:
A, at first to TC11 titanium alloy bearing sanding and polishing, at room temperature put into electrical heater then, electrical heater is evacuated to 10
-2Pa～10
-3Pa;
B, to feed purity in the electrical heater be 99.99% argon gas, and the ventilation flow velocity is 10～30SLM, to the electrical heater internal gas pressure be 0.01～0.015MPa, stop to feed argon gas;
C, to electrical heater energising heating, to temperature be 400～600 ℃, be incubated 15～25 minutes, extract argon gas during insulation out, and to feed purity be 99.99% oxygen, ventilation flow velocity is 10～60SLM, the interior oxygen pressure of maintenance electrical heater is 0.01～0.015MPa;
D, the electrical heater temperature is heated to 950～1250 ℃, temperature rise rate is 4～6 ℃/min;
E, insulation 0.5～5 hour;
F, cooling, rate of temperature fall is 4～6 ℃/min, is down to 500 ℃;
G, stop ventilation, and close the heating power supply of breather valve and electrical heater;
H, when treating that the electrical heater room temp is down to room temperature the titanium alloy bearing is taken out.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310201530.8A CN103290346B (en) | 2013-05-24 | 2013-05-24 | Strengthening and toughening process of bearing titanium alloy |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310201530.8A CN103290346B (en) | 2013-05-24 | 2013-05-24 | Strengthening and toughening process of bearing titanium alloy |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103290346A true CN103290346A (en) | 2013-09-11 |
| CN103290346B CN103290346B (en) | 2015-02-25 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310201530.8A Expired - Fee Related CN103290346B (en) | 2013-05-24 | 2013-05-24 | Strengthening and toughening process of bearing titanium alloy |
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| Country | Link |
|---|---|
| CN (1) | CN103290346B (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104129225A (en) * | 2014-07-28 | 2014-11-05 | 南车株洲电力机车有限公司 | Bogie and wheel set axle box |
| CN109402536A (en) * | 2018-11-05 | 2019-03-01 | 浙江飞剑科技有限公司 | A kind of titanium cup surface texture method |
| CN111705204A (en) * | 2020-07-30 | 2020-09-25 | 常熟市市南模具有限责任公司 | Oxidation heat treatment process for glass mold |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101942688A (en) * | 2010-09-21 | 2011-01-12 | 上海大学 | Composite oxidation technology for medicinal titanium alloy |
| CN103028741A (en) * | 2012-11-29 | 2013-04-10 | 山东大学 | Method for forming biological titanium alloy oxide films through cutting processing |
-
2013
- 2013-05-24 CN CN201310201530.8A patent/CN103290346B/en not_active Expired - Fee Related
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101942688A (en) * | 2010-09-21 | 2011-01-12 | 上海大学 | Composite oxidation technology for medicinal titanium alloy |
| CN103028741A (en) * | 2012-11-29 | 2013-04-10 | 山东大学 | Method for forming biological titanium alloy oxide films through cutting processing |
Non-Patent Citations (2)
| Title |
|---|
| 侯猛等: "热氧化对钛合金表面氧化层的影响", 《材料科学与工程学报》 * |
| 赵爱玲等: "钛及钛合金热氧化行为研究", 《钛工业进展》 * |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104129225A (en) * | 2014-07-28 | 2014-11-05 | 南车株洲电力机车有限公司 | Bogie and wheel set axle box |
| CN109402536A (en) * | 2018-11-05 | 2019-03-01 | 浙江飞剑科技有限公司 | A kind of titanium cup surface texture method |
| CN109402536B (en) * | 2018-11-05 | 2020-04-07 | 浙江飞剑科技有限公司 | Titanium cup surface texture processing method |
| CN111705204A (en) * | 2020-07-30 | 2020-09-25 | 常熟市市南模具有限责任公司 | Oxidation heat treatment process for glass mold |
Also Published As
| Publication number | Publication date |
|---|---|
| CN103290346B (en) | 2015-02-25 |
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