CN104338798B - A kind of accurate thermal correction measure of scraper plate cast blank die forging - Google Patents
A kind of accurate thermal correction measure of scraper plate cast blank die forging Download PDFInfo
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- CN104338798B CN104338798B CN201410665184.3A CN201410665184A CN104338798B CN 104338798 B CN104338798 B CN 104338798B CN 201410665184 A CN201410665184 A CN 201410665184A CN 104338798 B CN104338798 B CN 104338798B
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- 238000005242 forging Methods 0.000 title claims abstract description 147
- 238000003825 pressing Methods 0.000 claims abstract description 40
- 238000001816 cooling Methods 0.000 claims description 15
- 238000009434 installation Methods 0.000 claims description 8
- 230000005540 biological transmission Effects 0.000 claims 1
- 238000005452 bending Methods 0.000 description 13
- 238000010791 quenching Methods 0.000 description 13
- 230000000171 quenching effect Effects 0.000 description 13
- 238000005496 tempering Methods 0.000 description 13
- 238000000034 method Methods 0.000 description 7
- 238000005266 casting Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 238000009749 continuous casting Methods 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 239000004615 ingredient Substances 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D1/00—Straightening, restoring form or removing local distortions of sheet metal or specific articles made therefrom; Stretching sheet metal combined with rolling
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Abstract
The invention belongs to technical field of forging, disclose the accurate thermal correction measure of a kind of scraper plate cast blank die forging, it adopts accurate thermal recalibration mechanism, and this mechanism includes: left briquetting, upper mould convex flat platform, intermediate pressing block, right briquetting and the recessed platform of counterdie；Forge hot foundry goods to be corrected, left briquetting, intermediate pressing block and right briquetting are respectively positioned between mould convex flat platform and the recessed platform of counterdie, left briquetting is positioned at the top of hot-cast forging left end, upper mould convex flat platform is positioned on the upper subject plane of hot-cast forging, intermediate pressing block is positioned at the top in the middle part of hot-cast forging, left briquetting is positioned at the top of hot-cast forging right-hand member, and the upper plane of the recessed platform of counterdie is positioned on the lower subject plane of hot-cast forging.Operation is simple and reliable for thermal recalibration of the present invention, and efficiency is high, and cost is low, and forge piece final room temperature linearity micron order tolerance and height dimension and tolerance concordance are good, and thermal recalibration accepted product percentage is up to 100%.
Description
Technical field
The invention belongs to technical field of forging, be specifically related to the accurate thermal correction measure of a kind of scraper plate cast blank die forging.
Background technology
It is that casting processing and forging processing are combined a kind of process shaped to obtain required form, size and performance part that cast blank die forging shapes, and the part obtained is called forge piece.The main processes of a kind of especially big II type scraper plate cast blank die forging is: strand casting → cast blank die forging (includes strand heating, finish-forging and thermal recalibration) → forge piece Tempering and Quenching.Affecting the main problem of especially big II type scraper plate cast blank die forging quality be the final room temperature linearity tolerance of forge piece is 2.5mm～4.0mm, it is difficult to reach the requirement of the final room temperature linearity tolerance≤2.0mm of forge piece.
Especially big II type scraper plate forge piece is deformed BENDING PROCESS and is divided into two stages: the first stage, the bending that cast blank die forging produces after cooling, because of especially big II type scraper plate forge piece longitudinal direction two end portions, the shape in mid portion and two end portions and the three of the transition portion of mid portion different intervals and size, final forging temperature, deformation extent, many unfavorable factors that degree and the residual stress etc. of expanding with heat and contract with cold difference is big, bending amount after cast blank die forging is big, bending rebound quantity is big, when not carrying out thermal recalibration, after die forging to cooling before high temperature linearity tolerance be 3.0mm～7.0mm, room temperature linearity tolerance after cooling is 5.0mm～9.0mm；Second stage, the bending produced after forge piece Tempering and Quenching, the bending amount of especially big II type scraper plate forge piece Tempering and Quenching is less, and room temperature linearity tolerance≤1.0mm is made without subsequent correction after Tempering and Quenching and can meet room temperature linearity tolerance≤1.0mm requirement.The especially big II final room temperature linearity tolerance≤2.0mm of type scraper plate forge piece, therefore, the room temperature linearity tolerance only carrying out thermal recalibration after cast blank die forging again reaches≤1.0mm and Tempering and Quenching after room temperature linearity tolerance also reach≤1.0mm time, can be only achieved the final room temperature linearity tolerance≤2.0mm requirement of forge piece.
From GB/T12362 " steel forging part tolerance and machine-finish allowance " national standard: the room temperature linearity tolerance after forging Tempering and Quenching is divided into regular grade and 2 ranks of micron order, especially big II type scraper plate forge piece total length is 1370mm, its regular grade tolerance should be 3.2mm, micron order tolerance should be 2.0mm, therefore, the final room temperature linearity tolerance≤2.0mm of especially big II type scraper plate forge piece is micron order.
Because especially big II type scraper plate has the particularity that amount of bow is big and bending rebound quantity is also big after cast blank die forging, holotype thermal recalibration is carried out in the finish impression of existing forging die, or carry out holotype thermal recalibration in existing independent straightening die, or drop height type snap close die joint upper mounting plate outside existing forging die finish impression and be made directly non-holotype thermal recalibration in lower platform structure, forge piece room temperature linearity tolerance after die forging and before Tempering and Quenching is all 1.5mm～3.0mm (the final room temperature linearity after Tempering and Quenching is all 2.5mm～4.0mm), the requirement of forge piece room temperature linearity micron order tolerance≤1.0mm after die forging and before Tempering and Quenching or the final room temperature linearity micron order tolerance≤2.0mm after Tempering and Quenching can not be reached.
Summary of the invention
(1) to solve the technical problem that
The technical problem to be solved in the present invention is: provide the accurate thermal correction measure of a kind of scraper plate cast blank die forging, effectively to overcome the shortcoming of above existing thermal correction measure, solve especially big II type scraper plate forge piece after die forging and before Tempering and Quenching, carry out the difficult problem that thermal recalibration is difficult to reach room temperature linearity micron order tolerance≤1.0mm or the final room temperature linearity micron order tolerance of forge piece≤2.0mm requirement.
(2) technical scheme
In order to solve above-mentioned technical problem, the present invention provides a kind of accurate thermal recalibration structure, comprising: left briquetting 1, upper mould convex flat platform 2, intermediate pressing block 3, right briquetting 4 and the recessed platform 5 of counterdie；Forge hot foundry goods 6 to be corrected, left briquetting 1, intermediate pressing block 3 and right briquetting 4 are respectively positioned between mould convex flat platform 2 and the recessed platform 5 of counterdie, left briquetting 1 is positioned at the top of hot-cast forging 6 left end, upper mould convex flat platform 2 is positioned on the upper subject plane of hot-cast forging 6, intermediate pressing block 3 is positioned at the top in the middle part of hot-cast forging 6, left briquetting 4 is positioned at the top of hot-cast forging 6 right-hand member, and the upper plane of the recessed platform of counterdie 5 is positioned on the lower subject plane of hot-cast forging 6.
Preferably, the structure of described left briquetting 1 and right briquetting 4 and equivalently-sized and be arranged symmetrically between forge hot foundry goods 6 and upper mould convex flat platform 2；The height that described left briquetting 1 has after hot-cast forging 6 two ends upper contact is installed with right briquetting 4 is identical with the drop height of the drop height type snap close after upper mould convex flat platform 2 and counterdie recessed platform 5 matched moulds；Described left briquetting 1 and right briquetting 4 are wedge, and its wedge shape gradient is identical with the drop gradient of upper mould convex flat platform 2, and wedge length is consistent with the drop length of upper mould convex flat platform 2.
Preferably, described intermediate pressing block 3 is T-shaped block, and its body height top of specific heat forge piece 6 after contact installation with hot-cast forging 6 middle upper portion exceeds 2.5mm.
Preferably, after thermal recalibration, the lower concave plane of left briquetting 1, the lower plane of upper mould convex flat platform 2, the upper plane of intermediate pressing block 3, the lower concave plane of right briquetting 4 coexist at grade with the upper subject plane of hot-cast forging 6, and the upper plane of the recessed platform of counterdie 5 and the lower subject plane of hot-cast forging 6 also coexist at grade.
Present invention also offers the accurate thermal correction measure of a kind of scraper plate cast blank die forging, it comprises the following steps:
S1: installation steps: hot-cast forging 6 later for die forging is taken out from forging die finish impression, then the lower subject plane of hot-cast forging 6 is kept flat on the recessed platform 5 of counterdie down, more left briquetting 1, intermediate pressing block 3, right briquetting 4 are individually positioned in the left upper part of hot-cast forging 6, top, middle part and right-hand member top；
S2: aligning step: hit 2 hammers/part on upper mould convex flat platform 2, transmits hitting power by left briquetting 1, upper mould convex flat platform 2, intermediate pressing block 3, right briquetting 4 and acts directly on and carry out thermal recalibration on the upper subject plane of hot-cast forging 6 and lower subject plane；
S3: cooling step: the left briquetting 1 after thermal recalibration, intermediate pressing block 3 and right briquetting 4 are taken off from hot-cast forging 6, then takes off hot-cast forging 6 from the recessed platform 5 of counterdie, then is kept flat down by the main body lower plane of hot-cast forging 6 and carry out natural cooling.
Preferably, the thermal recalibration temperature of described hot-cast blank 6 is 850 DEG C～950 DEG C, namely after hot-cast blank 6 die forging, final forging temperature is 850 DEG C～950 DEG C.
Preferably, in described step S2, hitting power size is so that the lower concave plane of left briquetting 1, the lower plane of upper mould convex flat platform 2, the upper plane of intermediate pressing block 3, the lower concave plane of right briquetting 4 are benchmark with the upper subject plane coexistence of hot-cast forging 6 at grade.
Preferably, in described step S3, the main body lower plane of the hot-cast forging 6 after thermal recalibration is kept flat down and carries out natural cooling.
(3) beneficial effect
Accurate thermal recalibration structure that technique scheme provides and the accurate thermal correction measure of scraper plate cast blank die forging, operation is simple and reliable for thermal recalibration, and efficiency is high, and cost is low, forge piece final room temperature linearity micron order tolerance and height dimension and tolerance concordance are good, and thermal recalibration accepted product percentage is up to 100%.
Accompanying drawing explanation
Fig. 1 a is the front view of the especially big II type scraper plate forge piece blank drawing related in the present invention；
Fig. 1 b is the left view of Fig. 1 a；
Fig. 2 a is the schematic diagram (containing the upper die and lower die partial structurtes in die joint position) of the forging die assembling front view of the existing especially big II type scraper plate cast blank die forging related in the present invention；
Fig. 2 b is the top view (without upper die structure, the distance forging die in finish impression longitudinally outboard checks the double dot dash line profile place at benchmark 350mm place, angle to be thermal recalibration head-down position) of Fig. 2 a；
Fig. 3 is the schematic diagram (containing mould drop height type snap close convex flat platform 2, intermediate pressing block 3, right briquetting 4, the existing forging die recessed platform 5 of counterdie drop height type snap close and hot-cast forging 6 totally six ingredients on left briquetting 1, existing forging die) of the assembling front view of the accurate thermal recalibration structure of the present invention；
Fig. 4 a is the front view of the left briquetting 1 of the present invention and right briquetting 4；
Fig. 4 b is the top view of Fig. 4 a；
Fig. 5 a is the front view of the intermediate pressing block 3 of the present invention；
Fig. 5 b is the left view of Fig. 5 a.
In figure, the left briquetting of 1-, the upper mould convex flat platform of 2-, 3-intermediate pressing block, the right briquetting of 4-, the recessed platform of 5-counterdie, 6-hot-cast forging.
Detailed description of the invention
For making the purpose of the present invention, content and advantage clearly, below in conjunction with drawings and Examples, the specific embodiment of the present invention is described in further detail.
In describing the invention, it should be noted that, term " on ", D score, "left", "right", " top ", " end ", " interior ", the orientation of the instruction such as " outward " or position relationship be based on orientation shown in the drawings or position relationship, it is for only for ease of the description present invention and simplifies description, rather than instruction or hint indication device or element must have specific orientation, with specific azimuth configuration and operation, be therefore not considered as limiting the invention.Additionally, term " first ", " second ", " the 3rd " are only for descriptive purposes, and it is not intended that indicate or hint relative importance.
In describing the invention, it is necessary to explanation, unless otherwise clearly defined and limited, term " installation ", " connection " should be interpreted broadly, for instance, it is possible to it is fixing connection, it is also possible to be removably connect, or connect integratedly；Can be mechanically connected, it is also possible to be electrical connection；Can be directly connected to, it is also possible to be indirectly connected with by intermediary, it is possible to be the connection of two element internals.For the ordinary skill in the art, it is possible to look concrete condition and understand above-mentioned term concrete meaning in the present invention.
Additionally, in describing the invention, except as otherwise noted, " multiple " are meant that two or more.
A kind of accurate thermal correction measure that the present embodiment proposes for II type scraper plate cast blank die forging especially big in prior art is dependent on what accurate thermal recalibration structure as shown in Figure 3 realized, and this precision thermal recalibration structure increases, by the upper mould convex flat platform 2 on the drop height type snap close die joint of existing forging die longitudinally outboard and counterdie recessed platform 5 structure and in interval, 3 sections of local, the fabricated structure that 3 kinds of additional structures of left briquettings 1, intermediate pressing block 3 and right briquetting 4 form.
The accurate thermal recalibration structure of the present embodiment specifically includes left briquetting 1, upper mould convex flat platform 2, intermediate pressing block 3, right briquetting 4 and counterdie 5 five major parts of recessed platform；Left briquetting 1 is positioned at the top of hot-cast forging 6 left end, upper mould convex flat platform 2 is positioned on the upper subject plane of hot-cast forging 6, intermediate pressing block 3 is positioned at the top in the middle part of hot-cast forging 6, left briquetting 4 is positioned at the top of hot-cast forging 6 right-hand member, and the upper plane of the recessed platform of counterdie 5 is positioned on the lower subject plane of hot-cast forging 6.
The distance forging die of the described accurate thermal recalibration structure existing forging die finish impression longitudinally outboard shown in such as Fig. 2 a, Fig. 2 b or Fig. 3 checks the upper mould convex flat platform 2 on the drop height type snap close die joint that effective length is 1060mm at benchmark 350mm place, angle and counterdie recessed platform 5 structure and the composite structures formed at 3 sections of interval 3 kinds of additional structures increasing left briquettings 1, intermediate pressing block 3 and right briquetting 4 in local；After thermal recalibration, the lower concave plane of left briquetting 1, the lower plane of upper mould convex flat platform 2, the upper plane of intermediate pressing block 3, the lower concave plane of right briquetting 4 coexist at grade with the upper subject plane of hot-cast forging 6, and the upper plane of the recessed platform of counterdie 5 and the lower subject plane of hot-cast forging 6 also coexist at grade.
With reference to shown in Fig. 4 a and Fig. 4 b, the structure of left briquetting 1 and right briquetting 4 with equivalently-sized and be symmetry wedge structure, its height dimension having after hot-cast forging 6 left end and right-hand member upper contact are installed is 30mm, identical with the drop height 30mm of the drop height type snap close after existing forging die matched moulds, wedge shape gradient is identical with the drop gradient of upper mould convex flat platform 2, the drop similar length of wedge length and upper mould convex flat platform 2, to ensure that left briquetting 1 coexists at grade with the upper plane of hot-cast forging 6 left end contacted and right-hand member respectively just with the right briquetting 4 lower concave plane after installing correction, bending rebound quantity after hot-cast forging 6 thermal recalibration is little, without producing hypercorrect phenomenon.
With reference to shown in Fig. 5 a and Fig. 5 b, the overall shape of intermediate pressing block 3 is T-shaped block structure, and overall height dimension is 66.5mm, and after contact installation with hot-cast forging 6 middle upper portion, the body height top of specific heat forge piece 6 exceeds 2.5mm.nullThe principal element affecting intermediate pressing block 3 height dimension has 3 aspects: be 123-62mm=61mm with this height dimension that difference in height is 125-61mm=64mm chill casting forging of the bottom of the intermediate pressing block 3 that hot-cast forging 6 middle upper portion contacts installation place to upper surface, hot-cast forging 6 two ends，The hot-cast forging 6 mid portion final forging temperature within longitudinal 715mm as shown in Figure 1a before thermal recalibration is 850 DEG C～950 DEG C，The final forging temperature at hot-cast forging 6 two ends is 1000 DEG C～1150 DEG C，Because of the hot-cast forging 6 two end portions 1.0mm higher than mid portion 64mm that reason of expanding with heat and contract with cold causes，Simultaneously，Hot-cast forging 6 mid portion can produce, after correction stress, the deformation reducing amount that 1.0mm～2.0mm meansigma methods is 1.5mm，Namely the effective depth of intermediate pressing block 3 should be 64+1.0+1.5mm=66.5mm，Therefore，Only intermediate pressing block 3 height dimension is chosen for 66.5mm，The upper plane of the intermediate pressing block 3 after just making installation thermal recalibration and the upper subject plane of hot-cast forging 6 coexist at grade just，Simultaneously，Bending rebound quantity after hot-cast forging 6 thermal recalibration is minimum，Without producing hypercorrect phenomenon，This is consistent completely with the actual result of thermal recalibration.
The hot-cast blank 6 thermal recalibration temperature of accurate thermal correction measure is 850 DEG C～950 DEG C, and thermal recalibration temperature is with the actual final forging temperature within hot-cast forging 6 mid portion longitudinal direction 715mm as seen in figure la and lb for benchmark.ZG30CrMnSi blank is the maximum stage of degree and bending of expanding with heat and contract with cold starting die forging to 850 DEG C～950 DEG C die forging complete stages of final forging temperature from initial forging temperature 1150 DEG C～1200 DEG C, but there is when 850 DEG C～950 DEG C enough deformation plasticity and less resistance of deformation and degree of expanding with heat and contract with cold after cooling and bending rebound quantity is less, therefore, the thermal recalibration when 850 DEG C～950 DEG C is effective；As hot-cast forging 6 temperature < 850 DEG C, the requirement of room temperature linearity tolerance can not be met after thermal recalibration, but permission carries out thermal recalibration after being reheated to 850 DEG C～950 DEG C again；Left briquetting 1, upper mould convex flat platform 2, intermediate pressing block 3, right briquetting 4 and counterdie 5 five parts of recessed platform all should preheat before thermal recalibration, and preheating temperature is 150 DEG C～350 DEG C, and the bending rebound quantity after hot-cast forging 6 thermal recalibration is less.
In accurate thermal recalibration process, need mould convex flat platform 2 on mold is hit, being specially cycle is 2 hammers/part cycle under mould effect on existing forging die as shown in Figure 2 a, both thermal recalibration can have been avoided not in place and the big phenomenon of amount of bow that is that cause, it is possible to avoid exceeding the proper limits in righting a wrong and the phenomenon of the super low limit of tolerance of height dimension that causes；Hitting power size is so that on the lower concave plane of left briquetting 1, existing forging die, the lower plane of mould drop height type snap close convex flat platform 2, the upper plane of intermediate pressing block 3, the lower concave plane of right briquetting 4 and the upper subject plane of hot-cast forging 6 coexist is benchmark at grade, the upper subject plane that can make hot-cast forging 6 ensures parallel with lower subject plane, and room temperature linearity tolerance and the concordance of height dimension and tolerance after thermal recalibration are good.
Needing cooling after correction, can be lain in down by the main body lower plane of the hot-cast forging 6 that temperature after thermal recalibration is 850 DEG C～950 DEG C and carry out natural cooling on the ground grading of non-strong convection wind and free from dampness or floor, the bending rebound quantity after cooling is minimum.
Therefore, based on above-mentioned accurate thermal recalibration structure and bearing calibration analysis, the accurate thermal correction measure of the present invention is divided into following 3 job steps: (1) erection stage, namely it is first that the hot-cast forging 6 of 850 DEG C～950 DEG C takes out from existing forging die finish impression as shown in Figure 2 a and 2 b by final forging temperature after die forging, then the lower subject plane of hot-cast forging 6 is lain in down on the recessed platform 5 of counterdie of double dot dash line place as shown in Fig. 2 b or Fig. 3, again by left briquetting 1, intermediate pressing block 3, right briquetting 4 is individually positioned in the left upper part of hot-cast forging 6, top, middle part and right-hand member top；(2) calibration phase, namely on the such as existing forging die shown in Fig. 2 a or Fig. 3, under the effect of mould hitting power, hit 2 hammers/part, transmit hitting power by left briquetting 1, upper mould convex flat platform 2, intermediate pressing block 3, right briquetting 4 and act directly on the upper subject plane of hot-cast forging 6 and lower subject plane carry out thermal recalibration；(3) cooling stage, namely first the left briquetting 1 after thermal recalibration, intermediate pressing block 3 and right briquetting 4 are taken off from hot-cast forging 6, then from the existing forging die recessed platform 5 of counterdie drop height type snap close, take off hot-cast forging 6, then the main body lower plane of hot-cast forging 6 is lain in down the ground grading of non-strong convection wind and free from dampness or floor carry out natural cooling.
By technique scheme it can be seen that the present invention has following distinguishing feature:
(1) the accurate thermal correction measure of the especially big II type scraper plate cast blank die forging of the present invention, solves especially big II type scraper plate forge piece and carries out the difficult problem that thermal recalibration is difficult to reach room temperature linearity micron order tolerance≤1.0mm or the final room temperature linearity micron order tolerance after Tempering and Quenching≤2.0mm requirement after die forging and before Tempering and Quenching.
(2) the accurate thermal correction measure of the especially big II type scraper plate cast blank die forging of the present invention, operation is simple and reliable for thermal recalibration, and efficiency is high, and cost is low, and forge piece final room temperature linearity tolerance and height dimension and tolerance concordance are good, and thermal recalibration accepted product percentage is up to 100%.
The above is only the preferred embodiment of the present invention; it should be pointed out that, for those skilled in the art, under the premise without departing from the technology of the present invention principle; can also making some improvement and deformation, these improve and deformation also should be regarded as protection scope of the present invention.
Claims (7)
1. an accurate thermal recalibration structure, it is characterised in that including: left briquetting (1), upper mould convex flat platform (2), intermediate pressing block (3), right briquetting (4) and the recessed platform of counterdie (5)；Hot-cast forging (6) to be corrected, left briquetting (1), intermediate pressing block (3) and right briquetting (4) are respectively positioned between mould convex flat platform (2) and the recessed platform of counterdie (5), left briquetting (1) is positioned at the top of hot-cast forging (6) left end, upper mould convex flat platform (2) is positioned on the upper subject plane of hot-cast forging (6), intermediate pressing block (3) is positioned at the top at hot-cast forging (6) middle part, right briquetting (4) is positioned at the top of hot-cast forging (6) right-hand member, the upper plane of the recessed platform of counterdie (5) is positioned on the lower subject plane of hot-cast forging (6)；The structure of described left briquetting (1) and right briquetting (4) and equivalently-sized and be arranged symmetrically between hot-cast forging (6) and upper mould convex flat platform (2)；The height that described left briquetting (1) has after hot-cast forging (6) two ends upper contact is installed with right briquetting (4) is identical with the drop height of the drop height type snap close after upper mould convex flat platform (2) and counterdie recessed platform (5) matched moulds；Described left briquetting (1) and right briquetting (4) are wedge, and its wedge shape gradient is identical with the drop gradient of upper mould convex flat platform (2), and wedge length is consistent with the drop length of upper mould convex flat platform (2).
2. accurate thermal recalibration structure as claimed in claim 1, it is characterized in that, described intermediate pressing block (3) is T-shaped block, and its body height top of specific heat forge piece (6) after contact installation with hot-cast forging (6) middle upper portion exceeds 2.5mm.
3. accurate thermal recalibration structure as claimed in claim 1, it is characterized in that, after thermal recalibration, the lower concave plane of left briquetting (1), the lower plane of upper mould convex flat platform (2), the upper plane of intermediate pressing block (3), the lower concave plane of right briquetting (4) coexist at grade with the upper subject plane of hot-cast forging (6), and the lower subject plane of the upper plane of the recessed platform of counterdie (5) and hot-cast forging (6) also coexists at grade.
4. the accurate thermal correction measure of a scraper plate cast blank die forging, it is characterised in that comprise the following steps:
S1: installation steps: hot-cast forging (6) later for die forging is taken out from forging die finish impression, then the lower subject plane of hot-cast forging (6) is kept flat on the recessed platform of counterdie (5) down, more left briquetting (1), intermediate pressing block (3), right briquetting (4) are individually positioned in the left upper part of hot-cast forging (6), top, middle part and right-hand member top；
S2: aligning step: hit 2 hammers/part upper mould convex flat platform (2) is upper, is acted directly on by left briquetting (1), upper mould convex flat platform (2), intermediate pressing block (3), right briquetting (4) transmission hitting power and carries out thermal recalibration on the upper subject plane of hot-cast forging (6) and lower subject plane；
S3: cooling step: the left briquetting (1) after thermal recalibration, intermediate pressing block (3) and right briquetting (4) are taken off from hot-cast forging (6), then from the recessed platform of counterdie (5), take off hot-cast forging (6), then the main body lower plane of hot-cast forging (6) is kept flat down carry out natural cooling.
5. the accurate thermal correction measure of scraper plate cast blank die forging as claimed in claim 4, it is characterized in that, the thermal recalibration temperature of described hot-cast forging (6) is 850 DEG C～950 DEG C, namely after hot-cast forging (6) die forging, final forging temperature is 850 DEG C～950 DEG C.
6. the accurate thermal correction measure of scraper plate cast blank die forging as claimed in claim 4, it is characterized in that, in described step S2, hitting power size is so that the lower concave plane of left briquetting (1), the lower plane of upper mould convex flat platform (2), the upper plane of intermediate pressing block (3), the lower concave plane of right briquetting (4) are benchmark with the upper subject plane coexistence of hot-cast forging (6) at grade.
7. the accurate thermal correction measure of scraper plate cast blank die forging as claimed in claim 4, it is characterised in that in described step S3, the main body lower plane of the hot-cast forging (6) after thermal recalibration is kept flat down and carries out natural cooling.
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| CN104722695B (en) * | 2015-03-31 | 2016-09-28 | 国营第六一六厂 | The forging die that a kind of scraper plate cast blank die forging shapes |
| CN105170852B (en) * | 2015-10-15 | 2017-04-12 | 国营第六一六厂 | Control method for precise dimensional tolerance of scraper casting-forging part |
| CN105598217B (en) * | 2015-12-30 | 2017-10-17 | 中国第二重型机械集团德阳万航模锻有限责任公司 | The constant temperature and pressure aligning method of titanium alloy die forging part warpage |
| CN108145050B (en) * | 2017-12-05 | 2019-10-25 | 国营第六一六厂 | A kind of control method of camshaft hot forging micron order dimensional tolerance |
| CN111590004B (en) * | 2020-05-26 | 2022-01-11 | 江苏龙城精锻集团有限公司 | Manufacturing process for manufacturing integral stainless steel oil rail forging |
| CN117161142B (en) * | 2023-09-28 | 2024-04-16 | 天津广亨特种装备股份有限公司 | Thermal correction die and method for adjusting sheet |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201573045U (en) * | 2009-12-04 | 2010-09-08 | 西安航空动力股份有限公司 | Hot correcting combined mould used for blade forging |
| CN201613328U (en) * | 2010-03-19 | 2010-10-27 | 重庆杰信模具有限公司 | Finishing mould for automotive front axle |
| CN102989988A (en) * | 2012-08-17 | 2013-03-27 | 大连大高阀门股份有限公司 | Manufacturing process of turnout base plate of high-speed railway |
| CN203635669U (en) * | 2013-12-24 | 2014-06-11 | 山推工程机械股份有限公司 | Track shoe correcting tool |
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| JP5055600B2 (en) * | 2007-03-26 | 2012-10-24 | 大同Ｄｍソリューション株式会社 | Die set and die mounting method |
| JP5180749B2 (en) * | 2008-09-11 | 2013-04-10 | 株式会社神戸製鋼所 | Trimming apparatus and trimming method |
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Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201573045U (en) * | 2009-12-04 | 2010-09-08 | 西安航空动力股份有限公司 | Hot correcting combined mould used for blade forging |
| CN201613328U (en) * | 2010-03-19 | 2010-10-27 | 重庆杰信模具有限公司 | Finishing mould for automotive front axle |
| CN102989988A (en) * | 2012-08-17 | 2013-03-27 | 大连大高阀门股份有限公司 | Manufacturing process of turnout base plate of high-speed railway |
| CN203635669U (en) * | 2013-12-24 | 2014-06-11 | 山推工程机械股份有限公司 | Track shoe correcting tool |
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