CN1147615C - Titanium and titanium alloy thin sheet close coupled processing technologyand special equipment - Google Patents
Titanium and titanium alloy thin sheet close coupled processing technologyand special equipmentInfo
- Publication number
- CN1147615C CN1147615C CNB991219465A CN99121946A CN1147615C CN 1147615 C CN1147615 C CN 1147615C CN B991219465 A CNB991219465 A CN B991219465A CN 99121946 A CN99121946 A CN 99121946A CN 1147615 C CN1147615 C CN 1147615C
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- China
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- titanium
- burner hearth
- retort
- alloy thin
- vacuum
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Abstract
The present invention relates to a vacuum annealing process, a hydrogen removing process and a flattening process for thin plates of titanium and titanium alloy, and relates to a special vacuum heating furnace. The integral processing technology for thin plates of titanium and titanium alloy is characterized in that in a special horizontal vacuum heating furnace, under the conditions of keeping the vacuum degree of 1.33*10<-2> to 1.33*10<-4> and the temperature of 704 DEG C to 800 DEG C, the thin plates of the titanium and the titanium alloy are pressed by ballast flat plates on a platform, the pressing process is carried out for 2 to 18 hours under the pressing pressure which is larger than 400 kilograms/square meter, and then, the thin plates are cooled; when the thin plates are cooled to the temperature of 600 DEG C+/-20 DEG C, cooling inert gases are filled into the thin plates within 30 to 90 minutes, and then, the thin plates are quickly cooled to the temperature below 400 to 350 DEG C.
Description
The present invention is about the complete processing and the special-purpose vacuum furnace of the vacuum annealing of a kind of titanium or titanium alloy thin plate, dehydrogenation and leveling.
All to flatten respectively behind the titanium or titanium alloy sheet rolling, dehydrogenation and vacuum annealing three process handle, the conventional technology that adds needs carry out respectively three heating and processing in three complete equipments, all bigger during energy charge, production efficiency is low.
The present invention provides a kind of at the deficiency of prior art existence can once vacuumize technology and the special-purpose heating under vacuum furnace apparatus thereof that heating just can be finished several work flow.
This titanium or titanium alloy thin plate integrated processing technique is characterized in that keeping vacuum tightness in a special horizontal vacuum furnace is 1.33 * 10
-2～1.33 * 10
-4Handkerchief, temperature are under 704 ℃～800 ℃ conditions, and the titanium or titanium alloy thin plate is suppressed so that ballast is dull and stereotyped on platform, and pressing pressure is greater than 400 kilograms/meter
2Continue 2～18 hours under the condition, cooling charged into m-benzoamino-semicarbazide with it and relies on gas to be quickly cooled to below 400～350 ℃ in 30～90 minutes when being cooled to 600 ℃ ± 20 ℃ then.
Satisfy the special-purpose heating under vacuum furnace apparatus of above-mentioned processing requirement, still has the vacuum unit, Sealing furnace tank body and burner hearth and heating unit, it is characterized in that the retort body that seals is arranged to horizontal, its working position places by thermal insulation layer, within the burner hearth that flame retardant coating constitutes, heating unit places the burner hearth side for the external-heat burner, by the connection that communicates with burner hearth of burning levelling chamber, burning levelling chamber, the stovepipe that burner hearth and burner hearth are provided with constitutes hot-fluid homogenizing operation passage, be provided with in the horizontal chamber oven tank body and strengthen gusset and electroheat pair, strengthen the gusset upper holder and be provided with guide rail, configurable worktable go-cart on the guide rail is provided with valve control inflation inlet at the retort reveal.
Ingenious metallographic structure Changing Pattern and dehydrogenation effect situation and the high temperature creep property that has utilized titanium or titanium alloy in vacuum environment, to vary with temperature and followed of complete processing with foregoing invention feature, each operational condition is optimized combination arrangement, make it disposablely to reach the effect of vacuum annealing, dehydrogenation and leveling, and its hydrogen richness of thin plate after handling is less than 0.015%, sheet material tensile strength is greater than 925MPa, yield strength is greater than 870MPa, and elongation is greater than 10.In addition, the special-purpose vacuum furnace that is disposed can conveniently pass in and out under the workpiece hot conditions, normal temperature, heat and high temperature and fast conditions such as cooling still can keep condition of high vacuum degree and reliable sealing performance, the heating unit that is disposed can guarantee to heat up reliably, insulation and fast cooling requirement.
Further illustrate special-purpose vacuum furnace apparatus embodiments among the present invention below in conjunction with description of drawings, and best process implementing example is provided.
Fig. 1 is a specific equipment example structure sectional view of the present invention.
Fig. 2 is figure A-A sectional view.
Wherein: 1, retort door; 2, door sealing circle; 3, retort body; 4, reveal water cooling chamber; 5, reveal air-cooling chamber; 6, thermoscreen; 7, thermal insulation layer; 8, flame retardant coating; 9, fire-resistant end liner; 10, preceding bearing; 11, gusset; 12, worktable go-cart; 13, rear support; 14, track; 15, the crosswind cold house of bleeding; 16, the side water cooling chamber of bleeding; 17, bleeding point sealing-ring; 18, vacuum unit; 19, burner; 20, burning levelling chamber; 21, stovepipe; 22, workpiece; 23, jointing plate; 24, burner hearth baffle plate; 25, burner hearth; 26, electroheat pair; 27, inflation inlet.
As shown in the figure, retort 3 in the specific equipment of the present invention is generally the circle tubular, by horizontal storing, its working position places within the burner hearth 25, the side of bleeding and retort door 1 are outside burner hearth 25, burner hearth 25 generally is made of thermal insulation layer 7 and water-resistant layer 8, burner hearth 25 inner bottom surfaces in the present embodiment also be provided with refractory lining 9 and before, rear support 10,13 are used to strengthen retort 3 working positions that support in the burner hearth 25, burner hearth 25 sides are provided with external-heat burner 19 by the connection that communicates with burner hearth 25 of burning levelling chamber 20, burner 19 adopts oil spout (vapour) burner the best, burning levelling chamber 20, during the hot-fluid homogenizing operation passage mechanism that the stovepipe 21 that burner hearth 25 and burner hearth are provided with constitutes is provided with, preferably place, burner hearth 25 dead angles being equipped with curved baffle 24 comprises wherein, make the homogenizing combustion efficacy better, also help realizing the cold technical requirements of speed heat speed.Be provided with in the horizontal chamber oven tank body 3 and strengthen gusset 11; strengthen gusset 11 upper holders and be provided with guide rail 14; configurable worktable go-cart 12 is used for jointing plate 23 on place work piece 22 and the workpiece 22 etc. on the guide rail 14; go-cart 12 passes in and out operation on guide rail 14 also more convenient; retort door 1 side be provided with valve control inflation inlet 27 cooling gas 1 (being generally rare gas element) directly can be led in retort body 3 chambeies; retort body 3 bleed side and jar the door 1 side be provided with air blast cooling chamber 5 from inside to outside successively; 15 with water cooling chamber 4; 17 constitute trapezoidal cooling structure scheme; this mechanism is provided with the protection of the sealing mechanism of retort body 3 corresponding sites and one-piece construction STRESS VARIATION be provided with and all brings benefit; in the present embodiment; sealing between retort body 3 and retort door 1 and vacuum unit 18 interfaces can adopt soft sealing structure to guarantee the processing request of condition of high vacuum degree; in addition, relatively retort door 1 inboard (and between retort body 3 working chambers) is provided with movably that thermoscreen 6 can more effectively prevent the destroying infection that thermal radiation constitutes soft sealing structure.
Processing method most preferred embodiment of the present invention; To be of a size of 0.889 * 914.40 * 2438.40mm
3The Ti-6A1-4V titanium alloy (0.035 " * 36 " * 96 ") thin plate places on worktable go-cart 12 flat boards for 2.5 tons, presses to be located working position in vacuum oven then with 2 tons of ballast flat boards, puts into thermoscreen 6, and closes fire door.Open vacuum unit 18 vacuum tightness in the jar is evacuated to 1.33 * 10
-3Pa opens each air-cooled and water-cooled mechanism and makes its normal operation,, open burner 19 then and begin to heat.Begin insulation when heating to 730 ℃ ± 10 ℃, keep a jar interior temperature being 730 ℃ ± 10 ℃ is 1.33 * 10 with vacuum tightness
-3The handkerchief condition continues beginning argon filling cooling after 4 hours, when reducing to 600 ℃, temperature quickens argon filling, in 45 minutes, be quickly cooled to workpiece 22 below 400 ℃, workpiece 22 has promptly reached vacuum annealing, dehydrogenation and three treatment effects of leveling simultaneously like this, it is natural air cooled that yet workpiece 22 can be pulled out in the retort body 3 fully, can certainly be in vacuum oven naturally cooling.
Claims (3)
1, a kind of titanium or titanium alloy thin plate integrated processing technique is characterized in that keeping vacuum tightness in a special horizontal vacuum furnace is 1.33 * 10
-2～1.33 * 10
-4Handkerchief, temperature are under 704 ℃～800 ℃ conditions, and the titanium or titanium alloy thin plate is suppressed so that ballast is dull and stereotyped on platform, and pressing pressure is greater than 400 kilograms/meter
2Continue 2～18 hours under the condition, cooling then charged into the cooling rare gas element with it and is quickly cooled to below 400～350 ℃ in 30～90 minutes when being cooled to 600 ℃ ± 20 ℃.
2, the close-coupled processing specific equipment of a kind of titanium-alloy thin-plate, still has the vacuum unit, Sealing furnace tank body and burner hearth and heating unit, it is characterized in that the retort body (3) that seals is arranged to horizontal, its working position places by thermal insulation layer (7), within the burner hearth (25) that flame retardant coating (8) constitutes, heating unit is that external-heat burner (19) places burner hearth (25) side, by burning levelling chamber (20) connection that communicates with burner hearth (25), burning levelling chamber (20), burner hearth (25) constitutes hot-fluid homogenizing operation passage with the stovepipe (21) that burner hearth (25) is provided with, be provided with in the horizontal chamber oven tank body (3) and strengthen gusset (11) and electroheat pair (26), strengthen gusset (11) upper holder and be provided with guide rail (14), guide rail (14) is gone up configurable worktable go-cart (12), is provided with valve control inflation inlet (27) in retort door (1) side.
3, a kind of titanium-alloy thin-plate integrated processing technique specific equipment, still have bleed side and a jar reveal of retort body (3) and be provided with air blast cooling chamber (5,15) and water cooling chamber (4,17) from inside to outside successively, adopt soft sealing structure between retort body (3) and retort door (1) and vacuum unit (18) interface, place, burner hearth (25) dead angle is provided with curved baffle (24), and retort door (1) inboard is provided with movably thermoscreen (6).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB991219465A CN1147615C (en) | 1999-10-18 | 1999-10-18 | Titanium and titanium alloy thin sheet close coupled processing technologyand special equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB991219465A CN1147615C (en) | 1999-10-18 | 1999-10-18 | Titanium and titanium alloy thin sheet close coupled processing technologyand special equipment |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1259587A CN1259587A (en) | 2000-07-12 |
| CN1147615C true CN1147615C (en) | 2004-04-28 |
Family
ID=5282208
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB991219465A Expired - Fee Related CN1147615C (en) | 1999-10-18 | 1999-10-18 | Titanium and titanium alloy thin sheet close coupled processing technologyand special equipment |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1147615C (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107321278A (en) * | 2017-08-30 | 2017-11-07 | 江苏维尔炉业有限公司 | One kind is easy to maintenance formula tank body heating furnace |
| CN111692876B (en) * | 2020-05-19 | 2022-01-11 | 赣州有色冶金机械有限公司 | Vacuum calcining furnace |
-
1999
- 1999-10-18 CN CNB991219465A patent/CN1147615C/en not_active Expired - Fee Related
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| Publication number | Publication date |
|---|---|
| CN1259587A (en) | 2000-07-12 |
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Owner name: WENZHOU CITY INDUSTRIAL SCIENCE INSTITUTE Free format text: FORMER OWNER: WENZHOU CITY INDUSTRIAL SCIENCE INST. Effective date: 20031031 |
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Effective date of registration: 20031031 Address after: Wenzhou City, Zhejiang province 325028 Shuixin seventeen Road No. 29 Applicant after: Wenzhou City Industry Science Inst. Address before: Wenzhou City, Zhejiang province 325028 Shuixin seventeen Road No. 29 Applicant before: Wenzhou Inst. of Industrial Sciences |
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| CF01 | Termination of patent right due to non-payment of annual fee |