CN1283813C - Method for heating titanium and titanium alloy ingot - Google Patents
Method for heating titanium and titanium alloy ingot Download PDFInfo
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- CN1283813C CN1283813C CN 200410084413 CN200410084413A CN1283813C CN 1283813 C CN1283813 C CN 1283813C CN 200410084413 CN200410084413 CN 200410084413 CN 200410084413 A CN200410084413 A CN 200410084413A CN 1283813 C CN1283813 C CN 1283813C
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- titanium
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- titanium alloy
- cogging
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- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 title claims abstract description 65
- 239000010936 titanium Substances 0.000 title claims abstract description 62
- 229910052719 titanium Inorganic materials 0.000 title claims abstract description 62
- 229910001069 Ti alloy Inorganic materials 0.000 title claims abstract description 47
- 238000010438 heat treatment Methods 0.000 title claims abstract description 38
- 238000000034 method Methods 0.000 title abstract description 12
- 238000005266 casting Methods 0.000 claims abstract description 50
- 238000002791 soaking Methods 0.000 claims abstract description 39
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 17
- 239000010959 steel Substances 0.000 claims abstract description 17
- 239000011819 refractory material Substances 0.000 claims description 6
- 239000007769 metal material Substances 0.000 claims description 5
- 238000013461 design Methods 0.000 claims description 4
- 229910045601 alloy Inorganic materials 0.000 claims description 3
- 239000000956 alloy Substances 0.000 claims description 3
- 239000000203 mixture Substances 0.000 claims description 3
- 230000003014 reinforcing effect Effects 0.000 claims description 2
- 241000282472 Canis lupus familiaris Species 0.000 claims 1
- 238000005242 forging Methods 0.000 abstract description 11
- 238000005516 engineering process Methods 0.000 abstract description 9
- 238000005096 rolling process Methods 0.000 abstract description 8
- 238000005272 metallurgy Methods 0.000 abstract description 2
- 238000004321 preservation Methods 0.000 abstract 2
- 238000004519 manufacturing process Methods 0.000 description 24
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 14
- 229910052742 iron Inorganic materials 0.000 description 7
- 229910052751 metal Inorganic materials 0.000 description 6
- 239000002184 metal Substances 0.000 description 6
- 238000011161 development Methods 0.000 description 4
- 238000002485 combustion reaction Methods 0.000 description 3
- 238000003825 pressing Methods 0.000 description 3
- 238000003723 Smelting Methods 0.000 description 2
- 230000008901 benefit Effects 0.000 description 2
- 238000009413 insulation Methods 0.000 description 2
- 230000008520 organization Effects 0.000 description 2
- 230000001590 oxidative effect Effects 0.000 description 2
- 239000010970 precious metal Substances 0.000 description 2
- 238000009423 ventilation Methods 0.000 description 2
- 230000015556 catabolic process Effects 0.000 description 1
- 210000000080 chela (arthropods) Anatomy 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
- 238000001514 detection method Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 229910001092 metal group alloy Inorganic materials 0.000 description 1
- 238000009497 press forging Methods 0.000 description 1
- 238000003672 processing method Methods 0.000 description 1
- 238000012797 qualification Methods 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 239000011435 rock Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 239000000725 suspension Substances 0.000 description 1
- 230000003245 working effect Effects 0.000 description 1
Abstract
The present invention relates to a method for heating titanium and titanium alloy ingots, which is used for rolling and cogging titanium (titanium alloy) casting ingots. The present invention is characterized in that the heating ingot casting technology of a soaking furnace is used and comprises the following steps: step 1, a block-shaped isolating device of which the upper surface is provided with a concave pit matched with the casting ingots is designed, and is flatly placed on a furnace bottom of the soaking furnace close to a furnace wall; step 2, one end of each casting ingot clamped into the soaking furnace, the other end is reclined on the surface wall, and contiguous casting ingots are kept for a certain distance; step 3, when the casting ingots are heated, the heat preservation is carried out for 15 minutes, the temperature when the casting ingots are placed into a furnace is not higher than 800 DEG C, the temperature is raised to T<set>=900 to 1000 DEG C at the speed not higher than 60 DEG C/h, the casting ingots are finally discharged from the soaking furnace after the heat preservation of 2.5 hours at the T<set>, and heat processing cogging treatment is carried out on a cogging mill. The patent of the present invention has the characteristics of simple technology and convenient productive organizations. The burning phenomenon when the soaking furnace heats the titanium and titanium alloy casting ingots is eliminated. Compared with those of the forging cogging technology, the quality is in conformity with the standard requirements, and the metallurgy cost of one ton of steel is reduced by more than 2000 yuan.
Description
Technical field
The present invention relates to the hot worked heating means of metallurgy industry precious metal, refer in particular to the heating means of pure titanium or titanium alloy hot-work cogging.
Background technology
As everyone knows, the hot-work cogging method of metal alloy generally has two kinds: forging press forges, blooming mill (cross-arranging type rolling mill) is rolling.For the hot-work cogging of titanium or titanium alloy: the former production efficiency is lower, relatively adapts to short run (or particular requirement) hot-work production; Latter's production efficiency is higher, so adapt to hot-work production in enormous quantities.
Because titanium (or titanium alloy) is a kind of expensive precious metal, though titanium (or titanium alloy) has high specific tenacity (light specific gravity, the intensity height) and excellent corrosion resistance, but the activity of titanium has determined the particular method of manufacture of titanium, cause the usage quantity of titanium for a long time smaller, therefore, the hot-work cogging of titanium (or titanium alloy) ingot at present all depends on to forge and finishes, its production technique adopts the traditional technology of " vacuum consumable smelting → forging and pressing cogging " basically: Φ 400～Φ 600 consumables ingot → chamber furnace heating → forging press forges, through the inferior forging of 3～4 fire, just can finish the hot-work cogging of specification 140～180mm titanium (or titanium alloy) base, the production cycle is longer.
In recent years, progress along with social science and technology, titanium (or titanium alloy) has become the structured material that important aviation, shipbuilding and chemical industry are used, extension in the face of the expansion of titanium (or titanium alloy) produce market, the expansion of demand size, imbalance between supply and demand shows especially day by day, and production cycle length, inefficient traditional hammer cogging technology is the incompatibility demands of social development.What the Development and Production cycle was short, efficient is high forges (the rolling replacement forging press forging of blooming mill to roll generation, remedy low billet yield with high production efficiency, reduce total production cost) hot-work cogging production process route, become research, the developing direction of titanium (or titanium alloy) manufacturer.In the rolling hot-work cogging of the blooming mill process, the Heating temperature of ingot metal is selected and homogeneity, it is an important factor that influences the rolling stability of metal rolled piece, the heating uniformity of titanium (or titanium alloy) ingot, particularly outstanding to the rolling stability and the surface quality influence of titanium (or titanium alloy) rolled piece.
No matter be the blooming mill rolling-cogging, or forging press hammer cogging, the process furnace that is used for the ingot metal heating is absolutely necessary, as everybody knows: the process furnace supporting with blooming mill is vertically fired pit, the process furnace supporting with forging press is chamber furnace, and soaking pit and chamber furnace are diverse two kinds of process furnace.Because bearing the ingot metal (steel ingot, titanium ingot) of all kinds of steel grades, under quite high temperature (1180～1320 ℃) and strong oxidizing atmosphere condition, heats in soaking pit, when therefore soaking pit heats ingot metal, two characteristics are arranged: the furnace bottom of (1) soaking pit exists a large amount of iron scales and piles up (along with the increase of heating number of times, inevitable); (2) steel ingot later stage holding stage adopts steel ingot to stand up that (the other end of eliminating steel ingot is in the soaking pit furnace bottom and sinks into shade among the iron scale, avoids the Heating temperature of steel ingot inhomogeneous, improves rolling quality.) realize the Heating temperature homogenizing of steel ingot.
The homogeneous heatingization of titanium or titanium alloy is the prerequisite of blooming mill rolling-cogging.During vertically fired pit heating titanium (or titanium alloy) ingot, steel ingot at steel ingot later stage holding stage stands up operation (under 900 ℃ of temperature, the clamping titanium ingot of pincers suspension centre contact stands up and puts down gently in furnace bottom) in, because titanium or titanium alloy has fusing point height (1668 ℃), the characteristics of burning-point low (1167 ℃), friction takes place titanium or titanium alloy auto-combustion phenomenon easily takes place in ingot casting and iron scale, so must guarantee to operate none error (in other words at every turn, the titanium ingot phenomenon of falling must not take place), and the characteristics of the consumable ingot zero draft of titanium (or titanium alloy), the titanium ingot is stood up the requirement that operation does not have error, and undertake to do what is apparently beyond one's ability real the genus.Steel ingot stands up when operation, in case taking place, the titanium ingot falls, and titanium ingot and the local violent friction of furnace bottom iron scale, the oxidizing reaction that causes and cause the burning of titanium ingot will cause the loss of titanium ingot, the great quality of soaking pit badly damaged, equipment breakdown, influence and keep the safety in production.
Summary of the invention
The present invention develops a kind of titanium, the heating means of titanium alloy ingot, it is a kind of processing method of soaking pit heating titanium (titanium alloy) ingot, be used for the hot-work rolling-cogging of titanium (titanium alloy) ingot at blooming mill, when guaranteeing titanium or titanium alloy ingot casting heating uniformity, contingent combustion phenomena when having avoided soaking pit heating titanium or titanium alloy ingot casting effectively, it is low to have solved traditional forging press hot-work hammer cogging explained hereafter efficient, comprehensive production cost problem of higher, it is quick to have satisfied metallurgical manufacturers, produce the requirement of titanium or titanium alloy steel billet easily, adapt to the needs of customer requirements and market development.
The heating means of a kind of titanium provided by the invention, titanium alloy ingot, titanium (titanium alloy) ingot casting that it is characterized in that being used for blooming mill hot-work rolling-cogging adopts " soaking pit heating process ":
The first step, design a block disrupter, disrupter adopts refractory materials to make (can bear the high-temperature atmosphere in the soaking pit on the one hand, has the high ventilation performance on the other hand, the heating uniformity that satisfies the titanium or titanium alloy ingot requires), the upper surface of block disrupter has pit, and dimple size is slightly larger than titanium (titanium alloy) ingot casting diameter (be convenient to titanium or titan alloy casting ingot and be placed on the block disrupter, avoid contacting, rubbing with the iron scale of soaking pit furnace bottom);
Second step, earlier block disrupter is clamped in the soaking pit, lie near on the furnace bottom of furnace wall (wall); Again titanium (titanium alloy) ingot casting is clamped in the soaking pit, an ingot casting end along its length erects the pit (avoiding contacting, rubbing with the iron scale of soaking pit furnace bottom) in block disrupter upper surface, the other end leans on the furnace wall of soaking pit that (all there is fixed pivot at the ingot casting two ends on the one hand, ingot casting can not rock in soaking pit, leave the space on the other hand around the ingot casting, avoided the heating dead angle of ingot casting, ingot casting is in the good heating atmosphere.), keep certain distance (to improve the heating uniformity of ingot casting between the adjacent ingot casting.)；
In the 3rd step, during heating, ingot casting is incubated 15～20 minutes in soaking pit, 600 ℃～800 ℃ of the charging temperatures of ingot casting earlier; Heat up then, with the speed heat temperature raising of 30～60 ℃/h to design temperature T
Set=900 ℃～1000 ℃ (actual temp is determined according to the composition of titanium or titanium alloy); At last, ingot casting is at T
SetUnder the temperature, be incubated 2～3 hours, its each point temperature head≤30 ℃, ingot casting goes out soaking pit, carries out the hot-work cogging on blooming mill.
Block disrupter (instrument) adopts the refractory materials baking of embedded with metal material to make that (refractory materials can bear the high-temperature atmosphere in the soaking pit, and has the high ventilation performance, satisfies the heating uniformity requirement of titanium or titanium alloy ingot; The embedded with metal material can improve the intensity of block insulation tool, improves the work-ing life of insulation tool.); Metallic substance is steel wire, reinforcing bar, wire netting.
Compare with prior art, the present invention has following advantage:
1, technology is simple, workable;
2, organization of production is convenient, adapts to scale production;
3, production efficiency height, the production cycle shortens greatly;
4, metallurgical manufacturing cost reduces greatly.
Description of drawings
Fig. 1 is the process curve of soaking pit heating titanium or titanium alloy ingot casting.
Fig. 2 is the block disrupter structural representation that is used for soaking pit.
Specific embodiments
Certain Iron And Steel Company's mill is implemented patent of the present invention, adopt titanium, titanium alloy (kinds such as TA2, TA3, TA10, GR2, GR3, the GR9) ingot casting of soaking pit heating φ 400～φ 700 (are example for 1.5 tons with φ 500, weight), the hot-work rolling-cogging that is used for φ 800 blooming mills: the block disrupter that (1) refractory materials is made, upper surface has 2 semicircular recess, dimple size (φ 520mm) is slightly larger than the ingot casting diameter, pit spacing 500mm; (2) earlier block disrupter is clamped in the soaking pit, lie near on the furnace bottom of furnace wall; Ingot casting is clamped in the soaking pit, an ingot casting end along its length erects in the pit of block disrupter upper surface again, and the other end leans on the furnace wall of soaking pit; (3) when heating is incubated 15 minutes with ingot casting earlier in soaking pit, the charging temperature of ingot casting≤800 ℃; Heat up then, with the speed heat temperature raising of≤60 ℃/h to T
Set=900 ℃～1000 ℃ (actual temp is determined according to the composition of titanium or titanium alloy, as pure titanium T
Set=900 ℃, GR9T
SetT=990 ℃); At last, ingot casting is at T
SetUnder the temperature, be incubated 2.5 hours, its each point temperature head≤30 ℃, ingot casting goes out soaking pit, carries out the hot-work cogging on blooming mill.During rolling-cogging, the titanium of homogeneous heating (or titanium alloy) ingot casting is pressed blooming mill hot-work cogging technics, and a fire (27 passage) rolls out the titanium or the titanium alloy square billet of qualified 140～180mm specification.Implement patent of the present invention, heating titanium (or titanium alloy) ingot casting, be used for the hot-work cogging of blooming mill, have that technology is simple, organization of production is convenient, the ingot casting heating uniformity is good, the characteristics of metallurgical low cost of manufacture, contingent combustion phenomena when having solved soaking pit heating titanium or titanium alloy ingot casting.Compare with traditional " vacuum consumable smelting → chamber furnace heating → forging and pressing cogging " production technique, the billet surface Functionality, quality and appealing design, production cycle shortens more than 10 times, and the metal billet yield is stabilized in (suitable with the forging and pressing cogging technics) more than 89%, and total metallurgical manufacturing cost reduces by 2000 yuan/ton more than the steel.Titanium that rolling-cogging goes out or titanium alloy square billet, through every Performance Detection, quality meets GB T2965-1996 standard and ASTMB348 requirement, qualification rate 100%.Satisfy the requirement that metallurgical manufacturers produces the titanium or titanium alloy steel billet quickly and easily, adapted to the needs of customer requirements and market development, remarkable in economical benefits.
Claims (2)
1, the heating means of a kind of titanium, titanium alloy ingot is characterized in that being used for titanium, the titan alloy casting ingot of blooming mill hot-work rolling-cogging, adopt " soaking pit heating process ":
The first step is used a block disrupter, and disrupter adopts refractory materials to make, and the upper surface of block disrupter has pit, and dimple size is slightly larger than titanium, titan alloy casting ingot diameter;
Second step, earlier block disrupter is clamped in the soaking pit, lie near on the furnace bottom of furnace wall; Titanium, titanium alloy casting ingot dogs are gone in the soaking pit, an ingot casting end along its length erects in the pit of block disrupter upper surface again, and the other end leans on the furnace wall of soaking pit; Keep certain distance between the adjacent ingot casting;
In the 3rd step, during heating, ingot casting is incubated 15～20 minutes in soaking pit, 600 ℃～800 ℃ of the charging temperatures of ingot casting earlier; Heat up then, set=900 ℃～1000 ℃ with the speed heat temperature raising of 30～60 ℃/h to design temperature T, the actual temp that T sets is determined according to the composition of titanium or titanium alloy; At last, ingot casting is incubated 2～3 hours under T sets, its each point temperature head≤30 ℃, and ingot casting goes out soaking pit, carries out the hot-work cogging on blooming mill.
2, the heating means of a kind of titanium according to claim 1, titanium alloy ingot is characterized in that: block disrupter, adopt the refractory materials baking of embedded with metal material to make; Metallic substance is steel wire, reinforcing bar, wire netting.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200410084413 CN1283813C (en) | 2004-11-22 | 2004-11-22 | Method for heating titanium and titanium alloy ingot |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200410084413 CN1283813C (en) | 2004-11-22 | 2004-11-22 | Method for heating titanium and titanium alloy ingot |
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| CN1609240A CN1609240A (en) | 2005-04-27 |
| CN1283813C true CN1283813C (en) | 2006-11-08 |
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| CN 200410084413 Active CN1283813C (en) | 2004-11-22 | 2004-11-22 | Method for heating titanium and titanium alloy ingot |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101190446B (en) * | 2006-11-30 | 2010-04-07 | 江苏宏宝集团有限公司 | Method for manufacturing super-long titanium or titanium alloy tube of 12-16 meters |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104607461B (en) * | 2015-01-23 | 2016-04-13 | 武钢集团昆明钢铁股份有限公司 | A kind of heating means of titanium alloy square billet |
| CN104588408B (en) * | 2015-01-23 | 2016-09-07 | 武钢集团昆明钢铁股份有限公司 | A kind of heating means of industrially pure titanium square billet |
| CN108746205A (en) * | 2018-04-23 | 2018-11-06 | 舞阳钢铁有限责任公司 | A kind of split rolling method method of wide cut TC4 titanium alloy blanks |
| CN110605353B (en) * | 2019-08-07 | 2021-02-19 | 江苏天工科技股份有限公司 | Efficient short-flow precision forging and cogging process for titanium and titanium alloy ingots |
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2004
- 2004-11-22 CN CN 200410084413 patent/CN1283813C/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101190446B (en) * | 2006-11-30 | 2010-04-07 | 江苏宏宝集团有限公司 | Method for manufacturing super-long titanium or titanium alloy tube of 12-16 meters |
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| CN1609240A (en) | 2005-04-27 |
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