CN101332484B - Die forging method of high-temperature alloy - Google Patents
Die forging method of high-temperature alloy Download PDFInfo
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- CN101332484B CN101332484B CN200710042561A CN200710042561A CN101332484B CN 101332484 B CN101332484 B CN 101332484B CN 200710042561 A CN200710042561 A CN 200710042561A CN 200710042561 A CN200710042561 A CN 200710042561A CN 101332484 B CN101332484 B CN 101332484B
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Abstract
The invention discloses a die forging method of a high-temperature alloy; the method comprises the following steps: a) die forging stock is in thermal insulation and heat preservation, and clad with thermal insulation cotton; b) heating of the die forging stock: the die forging stock clad with the thermal insulation cotton is heated in a heating furnace and preserved at a temperature, the heating temperature is 900-1200 DEG C, and the heat preservation time is not less than 30 minutes; c) heating of a die: the die is put into a press, and heated to the working temperature of 600-650 DEG C in the heating furnace of the press; d) die forging: the die forging stock is taken out of the heating furnace and sent to an oil press or a hydraulic press for die forging, the amount of deformation is 40-80%, and the die forging speed is 1-5mm/s. The die forging method of the invention solves the problem of slow heating-up of the die forging stock in the heating furnace resulting from the existing 'compound jacketing' mode, improves the heat preservation effect of workpiece, and lower the cost for the application of heat insulating materials; the die forging method adopts a lower die temperature, which sufficiently eliminates the problems of short service life of the hot press forging die and great production difficulty, and facilitates producing the alloy forged pieces conforming to finecrystalline requirements.
Description
Technical field
The present invention relates to the forging thermal processing distortion technology of high temperature alloy, refer in particular to the die forging method that is used for as the GH4169 high temperature alloy.
Background technology
The GH4169 alloy is called as the pillar of high temperature alloy, is most widely used in the world high temperature alloy kind; According to the grain structure of GH4169 alloy product, can be divided into coarse-grain product, thin brilliant product.The thin brilliant forging of GH4169 alloy (having thin brilliant feature and δ nodularization feature mutually), owing to have good low cycle fatigue property and high cycle fatigue performance, good Strengthening and Toughening overall balance performance has obtained to use widely in the critical component of high-new power set or vitals.
The thin brilliant forging part of this GH4169 alloy, for preventing to produce grain coarsening in heat treatment process, its heat treated solid solubility temperature should be a little less than the solution temperature of δ phase, because heat treatment itself can not realize the refinement of crystal grain and the nodularization of δ phase.Therefore, thin brilliant GH4169 alloy forging part is without under the condition of heat treatment, should have 10 grades or thinner grain structure and spherical δ phase constitution, and should avoid the part of forging part after machined to exist the brilliant cold module of elongation of non-recrystallization to knit (it is a difficult problem of generally acknowledging that the tissue of above-mentioned harshness requires) both at home and abroad.The die forging heat processing technique of thin brilliant GH4169 alloy forged piece mainly contains two kinds: a kind of is to adopt heat preservation technology to carry out die forging, is called for short the insulation die forging; Another kind is to adopt mold heat to carry out die forging, is called for short hot forging.
The insulation die forging is that China's high temperature alloy is used more die forging technology.China had once brought into play important effect for the exploitation of China's series high-temperature alloy die forging piece in the compound jacket insulation of the die forging base of the innovation eighties in 20th century die forging technology.So-called compound jacket insulation die forging, exactly: at first the die forging base is carried out compound jacket, the adiabatic cotton cladding on the surface of die forging base, is adopted corrosion resistant plate cladding adiabatic cotton again, and soldering stainless steel plate contact position; Then, the die forging base of compound jacket is heated in stove, and the superpacket cover die forging stock that heats is incubated die forging on press.
But there is following defective in this method:
1. owing to be not bonded to one between adiabatic cotton and the die forging base, the changing of the relative positions of can drifting about when adiabatic cotton cladding corrosion resistant plate and soldering stainless steel plate, breakage can take place in the minority adiabatic cotton, and part die forging base is difficult to obtain fully effective heat insulation and preservation effect;
2. after die forging base surface clads adiabatic cotton entirely with corrosion resistant plate, because the adiabatic cotton thermal conductivity factor is low, temperature-rise period was slow when the die forging base of compound jacket heated in heating furnace, cause the die forging base oversize heat time heating time, elapsed time is longer near δ separates out peak temperature mutually, the reasonable control of the abundant nodularization of δ phase and δ phase amount when being unfavorable for die forging;
3. mould adopts the steel alloy manufacturing, is heated to before use about 350 ℃, because the heating-up temperature of mould is on the low side, adds that compound jacket can not make the mould base obtain enough heat insulation effects, and can't obtain does not have the forging part that remarkable cold module is knitted.For no cold module after guaranteeing the processing of forging part finished product is knitted, the surplus of die forging base big (not having cold module with the part after the machined of assurance forging part knits), the mach stock utilization of part is lower;
4. blank cladding corrosion resistant plate can reduce symmetry and the dimensional accuracy that forging part is shaped.
Hot forging: it is to adopt high-temperature resistance die that a MIN approach is reduced in the influence of mould Quench.This class mould normally adopts cast nickel-base alloy material (in the production practices, often adopting the K3 cast superalloy), can be heated to 540 ℃ to 830 ℃ according to the material that adopts.Adopt higher mold temperature, can improve the uniformity of die forging base temperature, obtain good microscopic structure, but the contradiction of the manufacture difficulty of mould, manufacturing cost and service life and application demand is bigger.
For realizing the thin brilliant requirement of GH4169 alloy forged piece, the heating-up temperature of GH4169 alloy die forging base (thin brilliant base) is 990 ℃ (grain coarsenings when preventing thin brilliant base heating), under this heating-up temperature, resistance of deformation is very big during the die forging of GH4169 alloy, is about 35kg/mm
2If mould adopts higher heating-up temperature, will cause the mould easy deformation, die life is on the low side.Once the thin brilliant GH4169 forging part of mould die forging that adopted the K3 cast superalloy to make, the mold heated temperature is 800 ℃, twenties forging of die forging only, remarkable distortion promptly takes place in mould.In addition, because the cast superalloy alloying level is very high, fusing point is lower, the technical barrier that prevents defectives such as the mould generation is loose, segregation during casting mould is very big, die manufacturing cost is very high, the thin brilliant GH4169 alloy hot forging technology of China just obtains Preliminary Exploitation in recent years, and its development is limited by the cast superalloy mould that hot forging is used.In sum, existing insulation die forging and hot forging method all have certain limitation.
Summary of the invention
The die forging method that the purpose of this invention is to provide a kind of high temperature alloy, solve existing " compound jacket " mode and cause the die forging base shortcoming slowly that in heating furnace, heats up, improve heat insulation effect and the operability of adiabatic cotton material, and reduce the cost of using insulation material workpiece; On the other hand, realization is to the well insulated insulation of workpiece, thereby can adopt lower mold temperature, can fully alleviate the hot forging low and big problem of manufacture difficulty die life, finally, produce thin brilliant require as the GH4169 alloy forged piece, satisfy the application requirements of high-new power set critical component (or vitals).
The present invention will be incubated die forging (adopting the insulation die forging of Pasting adiabatic cotton) and hot forging (employing mold heat) combines, it is not the intact simple combination of original two kinds of die forging technology, but, original two kinds of die forging technology are reasonably changed and improved according to the characteristics of thin peritectic alloy such as GH4169 alloy contour forging technique key element.The compound jacket insulation of existing relatively on the one hand heat Insulation film+corrosion resistant plate die forging technology, solve its " compound jacket " mode and cause the die forging base shortcoming slowly that in heating furnace, heats up, improve heat insulation effect and the operability of adiabatic cotton material, and reduce the cost of using insulation material workpiece; On the other hand, can realize the well insulated of workpiece is incubated owing to use the Pasting adiabatic cotton, thereby can adopt lower mold temperature, can fully alleviate the hot forging low and big problem of manufacture difficulty die life.Finally, produce the thin brilliant GH4169 alloy forged piece that requires, satisfy the application requirements of high-new power set critical component (or vitals).
A kind of die forging technology of producing the thin brilliant forging of GH4169 alloy provided by the invention, to be incubated die forging, two kinds of die forging heat processing technique combinations of hot forging, the one, adopt the Pasting adiabatic cotton that the die forging base is carried out adiabatic heat-insulation during die forging, the 2nd, adopt operating temperature not to be higher than 650 ℃ mold heat; Containing on the hot die forging press of heating furnace, GH4169 alloy die forging base is being manufactured the thin brilliant forging part of GH4169 alloy that dimensions, performance meet standard-required.
Particularly, the die forging method of high temperature alloy of the present invention, it comprises the steps:
A) die forging base adiabatic heat-insulation adopts the Pasting adiabatic cotton, uses the method for pasting with on the adiabatic cotton overmold forging stock;
B) die forging base heating and insulation are opened wide one side with the die forging base that coats the Pasting adiabatic cotton, put into heating furnace heating, insulation, 900～1200 ℃ of heating-up temperatures, temperature retention time 〉=30 minute;
C) mold heated, with the mould hot die forging press of packing into, and in the heating furnace of hot die forging press with the operating temperature of mold heated to 600 ℃～650 ℃;
D) die forging, die forging base go out that heating furnace is delivered to hydraulic press or hydraulic press carries out die forging, and deflection is 40%～80%, and die forging speed is 1～5mm/s.
Further, during die forging base sticking adiabatic cotton, an adiabatic cotton is opened wide on die forging base surface, so that the die forging base comparatively fast heats up when heating in heating furnace.
The die forging base covers the Pasting adiabatic cotton in the one side of opening wide after being heated to temperature, insulation, because inside and a surface of Pasting adiabatic cotton have high viscosity under the high temperature, the Pasting adiabatic cotton that is covered on the workpiece can be bonded on the surface of workpiece.
The high temperature die forging base of Pasting adiabatic cotton all standing, coming out of the stove and be transferred in the process of press die forging, the Pasting adiabatic cotton is pasted in the contact site of the clamp of its Transport Machinery and die forging base, thereby the clamp of avoiding transporting damages the adiabatic cotton of cladding on the die forging base, significantly reduces the heat that transporting equipment is drawn the die forging base.
When the die forging base is cake,, open wide the other end of cake with the end face and the periphery of Pasting adiabatic cotton cladding cake; The die forging base when heating furnace heats, its cake open wide one side in stove up.
Described stamp forging mould material adopts wrought superalloy.
Described hot forging wrought superalloy is distortion GH4169 alloy; Adopt wrought superalloy (distortion GH4169 alloy) to replace conventional cast superalloy (for example, the K3 cast superalloy), significantly reduce the manufacture difficulty of hot forging mould; Be applied to the exotic material mould of hot forging, key performance requires to have than high-lasting strength under serviceability temperature, thereby is reduced in the deformation of creep under the serviceability temperature as far as possible, improves the life-span of mould under serviceability temperature.When mold temperature is higher, the as cast condition high temperature alloy usually headed by modeling tool material.But after deliberation, under the prerequisite that adopts the Pasting adiabatic cotton that workpiece is incubated, adopt 650 ℃ mold temperature can avoid producing tangible cold module effectively and knit.And when the temperature that is no more than 650 ℃, distortion GH4169 alloy also has high creep rupture strength.Therefore, can consider to select for use all lower distortion GH4169 alloy of cost and manufacture difficulty as the hot forging mould.
The die forging base add heat request: the maximum heating temperature of die forging base should be in the critical solubility temperature scope of δ phase, and making needle-like δ is corynebacterium by heating for dissolving, changes into spherical δ during for die forging and creates necessary condition mutually.Should reduce near die forging base when heating (910 ℃～940 ℃) elapsed time δ separates out peak temperature mutually, excessive the separating out of δ phase when reducing the heating of die forging base as far as possible.To the 10 grades thin brilliant forging parts that require, the maximum heating temperature of die forging base is advisable with 990 ℃ ± 10 ℃.After furnace temp reached 990 ℃, the die forging base can shove charge.
The technical factor of insulation die forging part
The Pasting adiabatic cotton that is applied to be incubated die forging should adopt the high-quality blanket insulation manufacturing that is difficult for efflorescence under the high temperature; This adiabatic cotton can obtain supply from market, its composition comprises adiabatic cotton, room temperature binding agent, high-temperature agglomerant.Wherein adiabatic cotton is the refractory ceramic fibre blanket, has the characteristics of the high adiabatic function of inorganic foamed fiber, and insulation effect is very high.The high-temperature agglomerant that disperse is distributed in the adiabatic cotton has high stickup ability and lubricating ability simultaneously under (〉=800 ℃) high temperature.
High viscosity high-temperature agglomerant: can obtain supply from the market.The sticking temperature scope: room temperature to 1300 ℃, can be in the pasty state during room temperature, be solid-state under the high temperature.When at room temperature the die forging base being pasted the Pasting adiabatic cotton, use this binding agent.When at high temperature pasting, then need not to adopt.
Because above-mentioned Pasting adiabatic cotton is a prior art, does not repeat them here, and specifically sees also the description in Chinese patent application number 200510023801.0 " Pasting adiabatic cottons and preparation method thereof ".
The die forging base can also adopt the mode of heating that opens wide one side in heating furnace, the die forging base is after heating furnace is heated to temperature, cover the Pasting adiabatic cotton in the one side of opening wide, the die forging base of all standing Pasting adiabatic cotton is being come out of the stove and is being transferred in the process of press die forging, and sticking adiabatic cotton is also answered in the contact site of the clamp of its Transport Machinery and die forging base.
The preparation of die forging base: preparation is than compact grained die forging base, and to the 10 grades thin brilliant forging parts that require, the grain size of die forging base should not be coarser than 7 grades, and avoids the die forging base Wei Shi shape and the existence of intensive needle-like δ phase constitution in heaps to occur.According to the method for common forging, can obtain the blank of this tissue.
Hot forging part technical factor:
Adopt as distortion GH4169 alloy mfg. moulding die, distortion GH4169 alloy has high creep rupture strength under≤650 ℃ of temperature, the alloy creep rupture strength can descend rapidly when serviceability temperature surpasses 650 ℃, so distortion GH4169 alloy mold serviceability temperature is advisable to be controlled at 600～650 ℃.
The die forging deflection is 40%～80%, die forging speed 1～5mm/s, thus by enough strains, activate the corynebacterium δ nodularization δ thermodynamic process of carrying out automatically mutually in opposite directions.
Adopt the thin brilliant forging of GH4169 alloy of the inventive method die forging, shape, size conforms instructions for use.Have 10～12 grades of thin crystalline substances and the δ excellent tissue signature of abundant nodularization mutually, have well balanced Strengthening and Toughening performance, particularly have superelevation week fatigue behaviour characteristics.
Beneficial effect of the present invention
Compared with prior art:
1, heat preservation technology relatively has heat Insulation film relatively now and adds the compound jacket of stainless steel, and the present invention has significantly reduced the time of die forging base heating;
The superpacket cover contour forging technique technology of domestic current adopts stainless steel+heat Insulation film to carry out the jacket die forging, can significantly reduce the radiation cooling of workpiece in transfer process and die forging process.Major defect is that cost is higher, the jacket process operation is more loaded down with trivial details.Because the heat-blocking action of heat Insulation film, programming rate is slow during the workpiece heating.Insulation contour forging technique link of the present invention adopts the Pasting adiabatic cotton, and a kind of inorganic heat-insulating foam has better heat insulation effect; With the method for pasting adiabatic cotton is covered die forging base surface, need not to re-use corrosion resistant plate cladding adiabatic cotton, thereby can adopt the mode of heating that opens wide one side in stove to the die forging base, workpiece can obtain programming rate faster.In addition, adopt that the operation of this technology is more convenient, more effective, cost is lower.
Referring to Fig. 1, Fig. 2, insulation adopts during die forging the Pasting adiabatic cotton that the die forging base is opened wide the one side heating, and the full cladding of die forging base is heated during existing relatively insulation die forging, can reduce blank required heat time heating time significantly, has remarkable energy savings, the effect of enhancing productivity; Simultaneously also reduce near blank elapsed time δ separates out peak temperature mutually significantly, the nodularization of δ phase is separated out when helping die forging, helps reducing δ too much the separating out of intracrystalline, thereby helps improving the Strengthening and Toughening performance of alloy.
2, mould is lubricated:
U.S. Wyman Gordan company adopts adiabatic cloth to be lubricated, the Pasting adiabatic cotton that the present invention adopts includes the glass dust that disperse distributes, in the temperature that is not less than 850 ℃ is a kind of full-bodied binding agent, is again a kind of good lubricant, has better lubricant effect.
3, mould:
Britain Cameron company adopts IN-100 and MarM200, mould hear resistance height, and serviceability temperature can reach more than 760 ℃, but the mould manufacture difficulty is big, the cost height.In the present invention, because Pasting adiabatic cotton heat insulation effect is good, mold temperature can be reduced to and be no more than 650 ℃, thereby can adopt distortion GH4169 alloy mfg. moulding die.Owing to greatly reduce die cost and manufacture difficulty, solved a bottleneck problem in the hot forging technological development.
4, forging temperature controlling:
The existence that the hot forging technology that the U.S. adopts does not avoid cold module to knit as yet fully, thereby further take isothermal forging process to carry out the die forging of IN718 alloy; But, finally still revert to hot forging technology because the isothermal forging cost is too high.Though the heating-up temperature of mold heat of the present invention is lower, owing to adopt Pasting adiabatic cotton heat preservation technology, the forging part of producing does not find that as yet obvious cold module knits existence at present.
5, grain refinement and δ phase spheroidizing process control:
Once on probation or adopted the method for being introduced as China Patent No. 96115293,1 in the eighties, found a lot of disadvantages.Mainly show as δ and separate out mutually too much, be unfavorable for the Strengthening and Toughening control of alloy.
6, efficiently solve remarkable cooling problem in the die forging base transfer process
To be incubated the die forging technology merges mutually with the hot forging technology, the relatively hot die forging, can solve the remarkable cooling problem of blank heated mould forging stock is transported to press from coming out of the stove the transfer process, thereby also just solve important quality control link problem in the die forging operation.
Fig. 3 is heated to 1020 ℃ GH4169 alloy bar base cladding and does not clad adiabatic cotton cooling trend contrast in air, from Fig. 3 as seen, within one minute, the adiabatic excellent base of cladding is lowered the temperature very little, adopting under the fast speed die forging situation, because part mechanical energy is converted into heat energy, the temperature of blank also can be gone up to some extent, this does not have to elongate the observation that brilliant cold module knits from forging part and can obtain witness, but it is very big that the excellent base that does not clad adiabatic cotton reduces, and causes forging part to occur that cold module is knitted and the remarkable inhomogeneities of grain structure.
7, the manufacture difficulty and the production cost of high-temperature resistance die have been reduced
Because adopt hot forging and the combined contour forging technique technology of insulation die forging, the mold heat temperature can adopt 600～650 ℃, thereby can use distortion GH4169 alloy, significantly reduce the manufacture difficulty of mould, and significantly improve the service life of mould as mould.
8, improved the structural homogenity of forging, significantly eliminated the cold module of forging part and knit
Because the good heat insulation effect of Pasting adiabatic cotton with foamed fibre characteristics, can significantly reduce the thermograde at die forging base center to edge, disperse distribution high-temperature agglomerant (glass dust) also has good lubricating function in the Pasting adiabatic cotton in forging process, can significantly reduce the contact friction between workpiece and the mould, thereby improve the structural homogenity of forging part, obtain the forging part that no cold module is knitted.
Description of drawings
Fig. 1 is that the GH4169 alloy cake employing Pasting adiabatic cotton of φ 400 * 200 opens wide the computer simulation heating curve figure when simultaneously heating in the 1500KW electric furnace;
Fig. 2 heats computer-chronograph simulation heating curve figure for same size cake adopts compound cladding method to clad adiabatic cotton entirely in same electric furnace;
Fig. 3 coats when not coating adiabatic cotton cooling trend comparison diagram in air for the GH4169 alloy bar material of heating;
Fig. 4 adopts the GH4169 alloy cylinder shape forging typical case grain structure figure of insulation die forging+hot forging of the present invention;
Fig. 5 adopts the GH4169 alloy cylinder shape forging typical case δ phase constitution figure of insulation die forging+hot forging of the present invention.
The specific embodiment
Embodiment 1: the cylinder-shaped forging part of the high-new power set critical component of die forging.
The grain size of die forging base is 7～8 grades, and it is spherical that δ is mutually, a small amount of corynebacterium.The die forging base is shaped as cake, uses the high viscosity high-temperature agglomerant at normal temperatures the Pasting adiabatic cotton is sticked on the lower surface and the circumference of die forging base, opens wide an end face, the resistance-heated furnace of packing into, open wide an end face up, heating-up temperature is 900～1200 ℃, and furnace temperature when being 990 ℃ high temperature go into stove.The die forging base is after temperature, and the one side of opening wide covers adiabatic cotton and is transferred to hydraulic press carries out die forging, and the heating-up temperature of mould is 600～650 ℃.In the die forging process mould is continued heating, mold temperature is remained unchanged.During mold pressing, speed is 2mm/ second, and deflection 50% is forged back cooling fast.
Testing result shows, forging part does not find that cold module knits, and whole grain structure is evenly tiny, and grain size is 10～12 grades of (see figure 4)s, and for being spherical that disperse distributes, quantity is moderate, referring to seeing Fig. 5 mutually for δ.The fine grained texture that excellence like this arranged and δ be spherodized structure mutually, and the reasonability that has shown the technology of the present invention is with advanced.Through test, this forging has good superelevation week fatigue behaviour, has filled up a domestic blank with superelevation week fatigue behaviour material product.
Embodiment 2: die forging has the GH4169 alloy rotor forging of two tissues, dual-property.
Except that die forging base heating-up temperature is 1020 ℃, other technological requirements are with embodiment 1, forging part does not have obvious cold module and knits, have two kinds of good organization's states: a kind of is 8 grades of thin crystalline substances and δ phase spherodized structure, another kind is 4～5 grades of thin crystalline substances and δ phase spherodized structure, researches and develops the very harsh another high-end material product of successful specification requirement at home first thereby use the technology of the present invention.
Embodiment 3: be applied to the die forging of difficult wrought superalloy
Die forging difficult wrought superalloys such as GH742, GH105, Udimet720.The method of sticking adiabatic cotton is with embodiment 1.Die forging base heating-up temperature is 1130～1160 ℃, and the die forging final forging temperature is 〉=1050 ℃.Adopt the K3 cast superalloy to make mould, the mold heated temperature is 800 ℃～900 ℃, and mold pressing speed is 2mm/ second, and the die forging rear surface is in good condition, and the requirement that can meet the specification of alloy structure and performance has realized the breakthrough of less-deformable alloy die forging technology.Difference with thin brilliant GH4169 alloy contour forging technique on contour forging technique is: must have high final forging temperature during owing to this type high temp alloy die forging, could fully avoid forging part crackle to occur, the heating-up temperature of mould should not be lower than 800 ℃, and in view of this, mould should adopt cast superalloy.
Embodiment 4: be applied to the die forging of certain Ti-Al intermetallic compound.
Die forging base heating-up temperature is 1200 ℃, final forging temperature 〉=1100 ℃, and the K3 mold heated is 950 ℃, and mold pressing speed is 1mm/ second, has realized the flawless die forging, and the forging part structural state is good, has realized the hot worked breakthrough of certain Ti-Al intermetallic compound.
Claims (5)
1. the die forging method of a high temperature alloy, it comprises the steps:
A) die forging base adiabatic heat-insulation adopts the Pasting adiabatic cotton, uses the method for pasting with on the adiabatic cotton overmold forging stock; The die forging base is distortion GH4169 alloy;
B) die forging base heating and insulation are opened wide one side with the die forging base that coats the Pasting adiabatic cotton, put into heating furnace heating, insulation, 900～1200 ℃ of heating-up temperatures, temperature retention time 〉=30 minute;
C) mold heated, mold materials adopt distortion GH4169 alloy, with the mould hot die forging press of packing into, and in the heating furnace of hot die forging press with the operating temperature of mold heated to 600 ℃～650 ℃;
D) die forging, die forging base go out that heating furnace is delivered to hydraulic press or hydraulic press carries out die forging, and deflection is 40%～80%, and die forging speed is 1～5mm/s; The forging part that obtains is thin brilliant GH4169 alloy forging part, and it has 10～12 grades fine grained texture and δ fully nodularization mutually.
2. the die forging method of high temperature alloy as claimed in claim 1 is characterized in that, when the die forging base was pasted the Pasting adiabatic cotton, a die forging base surface was up opened wide.
3. the die forging method of high temperature alloy as claimed in claim 1 or 2 is characterized in that, the die forging base covers the Pasting adiabatic cotton in the one side of opening wide after being heated to temperature, insulation.
4. the die forging method of high temperature alloy as claimed in claim 1, it is characterized in that, the high temperature die forging base of Pasting adiabatic cotton all standing, coming out of the stove and be transferred in the process of press die forging, the Pasting adiabatic cotton is pasted in the contact site of the clamp of its Transport Machinery and die forging base, thereby the clamp of avoiding transporting damages the adiabatic cotton that is coated on the die forging base, significantly reduces the heat that transporting equipment is drawn the die forging base.
5. the die forging method of high temperature alloy as claimed in claim 1 is characterized in that, when the die forging base is cake, coats the end face and the periphery of cake with the Pasting adiabatic cotton, opens wide the other end of cake; The die forging base when heating furnace heats, its cake open wide one side in stove up.
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