CN114603314A - Manufacturing process of support ring forge piece of ten-thousand-ton-level aluminum extrusion machine - Google Patents
Manufacturing process of support ring forge piece of ten-thousand-ton-level aluminum extrusion machine Download PDFInfo
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- CN114603314A CN114603314A CN202210156636.XA CN202210156636A CN114603314A CN 114603314 A CN114603314 A CN 114603314A CN 202210156636 A CN202210156636 A CN 202210156636A CN 114603314 A CN114603314 A CN 114603314A
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Abstract
The invention discloses a manufacturing process of a support ring forging of a ten-thousand-ton-level aluminum extruder, which comprises the following steps of: carrying out heat treatment on the plate blank; sawing the slab to produce small unit blanks; milling, cleaning and polishing the small unit blank; stacking the processed small unit blanks on a stacking platform to obtain stacked blanks; preparing a sealing welding blank from the stacked blanks; forging and forming the seal welding blank; carrying out post-forging heat treatment on the support ring forge piece formed by forging; roughly processing the support ring forge piece subjected to heat treatment after forging; performing performance heat treatment on the support ring forge piece after rough machining; and performing finish machining on the support ring forge piece subjected to the performance heat treatment. The invention can obtain the high-quality blank with homogenization, densification and purification, the forged and formed forging has the advantages of uniform internal structure, fine crystal grains, complete streamline, capability of effectively improving the strength and the pressure bearing performance of the forging and the service fatigue life, low manufacturing cost, and capability of providing the working performance of the extruder and the service life of equipment at present.
Description
Technical Field
The invention belongs to the technical field of large forging manufacturing, and particularly relates to a manufacturing process of a support ring forging of a ten-thousand-ton aluminum extruder.
Background
The oversized forged piece is a key part for manufacturing nuclear power, thermal power, hydropower, ships and engineering machinery, and the oversized steel ingots made of various materials are usually required to be manufactured. However, the conventional manufacturing process of the oversized die-cast steel ingot generally has the following problems:
1) the manufacturing process of the oversized die-cast steel ingot is complex and generally needs to be customized independently;
2) the problems of segregation, looseness, uneven element distribution and the like commonly occur in the manufacturing process of the oversized die-cast steel ingot due to different cooling speeds of all parts and the like;
3) the material utilization rate of the oversized die-cast steel ingot is low in the manufacturing process, and about 20% -35% of materials at a water gap, a riser and the like need to be cut off;
4) the manufacturing period is long, and the comprehensive production cost is high.
In addition, the main hydraulic cylinder is an important component of the aluminum extrusion machine, and the working reliability of the main hydraulic cylinder directly influences the overall working condition and performance of the extrusion machine. The main hydraulic cylinder generally comprises a main cylinder body, a main plunger, a copper sleeve, a sealing device and the like. The force of the high-pressure liquid acting on the end face of the main plunger is applied to the aluminum ingot blank in the extrusion cylinder through the extrusion shaft to form extrusion force. The main cylinder body is a high-pressure wall-thickness container with one closed end and one open end, and the main cylinder body support ring is used as the most important support component of the main cylinder body, and the manufacturing quality of the main cylinder body support ring has direct influence on the working performance of the extruding machine and the service life of equipment.
Therefore, at present, there is a need to develop a manufacturing process of a ten-thousand-ton-level aluminum extruder support ring forging, so as to solve the above problems in the manufacturing process of the existing ultra-large-size steel ingot and the ten-thousand-ton-level aluminum extruder support ring forging, reduce the manufacturing cost of the extruder, improve the working performance of the extruder, and prolong the service life of equipment.
Disclosure of Invention
The invention aims to solve the problems in the prior art and provides a novel manufacturing process for a support ring forging of a ten-thousand-ton aluminum extruder. The continuous casting slab with longer length is sawed into a plurality of small unit slabs, the small unit slabs are used as elements for additive manufacturing, the small unit slabs are milled, cleaned and polished, and then the small unit slabs are stacked into stacked slabs to be subjected to vacuum electron beam sealing welding, so that homogenized, densified and purified high-quality blanks are obtained, the traditional die cast ingot is replaced, the forged and formed forging piece has the advantages of uniform internal structure, fine crystal grains, complete streamline and the like, the strength, the bearing capacity and the service fatigue life of the forging piece can be effectively improved, the manufacturing cost is low, and the working performance of an extruder and the service life of equipment are provided at present.
The technical scheme for solving the technical problem is as follows:
a process for manufacturing a ten-thousand-ton-level aluminum extruder support ring forge piece by adopting a metal construction and free forging forming process comprises the following steps:
(1) carrying out heat treatment on the plate blank to eliminate the structural stress of the plate blank;
(2) sawing the plate blank according to a preset size to obtain a small unit blank;
(3) milling the small unit blank to enable the roughness of the small unit blank to reach a preset roughness threshold, and cleaning and polishing the milled small unit blank to enable the cleanliness of the small unit blank to reach a preset cleanliness threshold;
(4) stacking the treated small unit blanks on a stacking platform according to a preset sequence to obtain stacked blanks;
(5) putting the whole stacked blank into a vacuum chamber for vacuum electron beam sealing welding to prepare a sealing welding blank;
(6) forging and forming the seal welding blank, wherein the forging and forming at least comprises one or more of upsetting, drawing out, punching and drawing out a core rod to obtain a support ring forging of an aluminum extruder;
(7) carrying out post-forging heat treatment on the support ring forge piece formed by forging, wherein the post-forging heat treatment at least comprises one or more of normalizing and tempering;
(8) carrying out rough machining on the support ring forge piece of the ten-thousand-ton-level aluminum extrusion machine after the forging heat treatment;
(9) performing performance heat treatment on the roughly machined support ring forging of the aluminum extrusion machine, wherein the performance heat treatment at least comprises one or more of quenching and tempering;
(10) and performing finish machining on the support ring forge piece of the aluminum extrusion machine after the performance heat treatment.
The temperature of the heat treatment in the step 1) is 850-880 ℃.
The milling in the step 3) comprises the step of milling the upper surface and the lower surface of the small unit blank, wherein the machining removal amount is 2-5mm, so that the roughness of the upper surface and the lower surface of the small unit blank reaches Ra3.2-12.5.
And milling four side surfaces of the small unit blank to enable the roughness of the four side surfaces of the small unit blank to reach Ra6.3-12.5.
The cleaning and polishing in the step 3) comprises cleaning and polishing the small surface and the lower surface of the unit blank so that the cleanness of the upper surface and the lower surface of the small unit blank reaches RFU (RFU) less than or equal to 20.
The vacuum electron beam sealing welding in the step 5) adopts primary sealing welding, wherein the air pressure of a vacuum chamber in the primary unit blank vacuum sealing welding is not more than 10-2Pa, welding voltage of 80-100KV, welding current of 100-150mA, welding speed of 150-300mm/min, and furnace temperature of 1150-1250 ℃.
The temperature of the normalizing in the step 7) is 870-930 ℃, and the temperature of the tempering is 630-680 ℃.
The surface roughness of the support ring forge piece of the ten-thousand-ton-level aluminum extrusion machine after rough machining in the step 8) is Ra6.3-12.5.
The quenching temperature in the step 9) is 860-910 ℃, and the tempering temperature is 600-650 ℃.
The method further comprises an ultrasonic detection step between the step 9) and the step 10), wherein the ultrasonic detection step is used for detecting whether the internal quality of the support ring forge piece of the ten-thousand-ton-level aluminum extruder is defective or not.
The ultrasonic detection step is followed by a sampling detection step, wherein the sampling detection step at least comprises one of sample decomposition and physical and chemical detection.
After having adopted above-mentioned technical scheme, the beneficial effect that this application was gained is:
1. the manufacturing process of the ten-thousand-ton-level aluminum extruder support ring forge piece comprises the steps of sawing a continuous casting plate blank with a long length into a plurality of small unit plate blanks, using the small unit plate blanks as an element for additive manufacturing, milling, cleaning and polishing the small unit plate blanks, stacking the small unit plate blanks into a stacking blank, and performing vacuum electron beam sealing welding to obtain homogenized, densified and purified high-quality blanks, wherein the high-quality blank replaces a traditional die cast ingot.
2. The manufacturing process of the ten-thousand-ton-level aluminum extruder support ring forge piece disclosed by the embodiment of the invention adopts a one-level sealing and welding construction method, can make full use of the limit capacity of the existing processing equipment to manufacture a forge piece with the weight exceeding one hundred tons, and can effectively ensure the quality of the ten-thousand-ton-level aluminum extruder support ring forge piece by adopting one-level sealing and welding construction.
3. The manufacturing process can conveniently and stably realize the homogenization manufacturing of large-size metal devices. The invention adopts a plurality of metal blanks with smaller volume as the construction elements, and because the solidification speed of the metal blanks with smaller volume is high, the component uniformity of the metal blanks is far better than that of the large-scale metal blanks integrally cast in the prior art, and the large-scale metal devices constructed on the basis have no obvious macrosegregation.
4. The manufacturing process can reliably realize the densification manufacturing of large-size metal devices. The invention adopts a plurality of metal blanks with smaller volume as construction elements, and because the solidification speed of the metal blanks with smaller volume is high, the metal blanks can be almost solidified at the same time, so that the concentrated shrinkage cavities in the blanks are less loose. After deformation, heat preservation and multidirectional forging of the welding interface, the compactness is higher than that of a forging piece made of a traditional integral casting blank.
5. The manufacturing process can reliably realize the purification manufacturing of large-size metal devices. The invention adopts a plurality of metal blanks with smaller volume as the construction elements, and the metal blanks with smaller volume have low preparation cost and difficulty, so that the elements can be purified by adopting various flexible refining methods, and the purity of the large-size metal device constructed on the basis is higher than that of a forging piece made of the traditional integral casting blank.
6. The manufacturing process of the invention can realize low-cost manufacturing of large-size metal devices. The metal blank with small volume can be prepared by adopting large production means such as continuous casting and the like, and the manufacturing cost is far lower than that of a die casting means which is required to be adopted for preparing the metal blank with large volume, so the manufacturing cost can be greatly reduced. In addition, the continuous casting billet is used as a construction element, the loss of a riser and a nozzle of the traditional steel ingot is avoided, and the material utilization rate can be effectively improved.
Drawings
Fig. 1 is a schematic flow chart according to an embodiment of the present invention.
Detailed Description
In order to facilitate understanding of the embodiment of the present invention, the following further describes a manufacturing process of a support ring forging of a ten-thousand-ton class aluminum extruder, which is an example of the embodiment of the present invention.
In the following, only certain exemplary embodiments are briefly described. As those skilled in the art will recognize, the described embodiments may be modified in various different ways, all without departing from the spirit and scope of the present invention. Accordingly, the drawings and description are to be regarded as illustrative in nature, and not as restrictive.
In addition, the accompanying drawings are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the invention and not to limit the invention.
Example 1
With reference to fig. 1, the present embodiment provides a manufacturing process of a support ring forging of a ten-thousand-ton aluminum extrusion press, which includes the following steps:
1) carrying out heat treatment on the plate blank to eliminate the structural stress of the plate blank;
2) sawing the plate blank according to a preset size to obtain a small unit blank;
3) milling the small unit blank to enable the roughness of the small unit blank to reach a preset roughness threshold, and cleaning and polishing the milled small unit blank to enable the cleanliness of the small unit blank to reach a preset cleanliness threshold;
4) stacking the treated small unit blanks on a stacking platform according to a preset sequence to obtain stacked blanks;
5) putting the whole stacking blank into a vacuum chamber for vacuum electron beam sealing welding to prepare a sealing welding blank;
6) forging and forming the seal welding blank, wherein the forging and forming at least comprises one or more of upsetting, drawing out, punching and drawing out a core rod to obtain a support ring forge piece of a ten-thousand-ton aluminum extruder;
7) carrying out post-forging heat treatment on a support ring forge piece of a ten-thousand-ton-grade aluminum extrusion machine, wherein the post-forging heat treatment at least comprises one or more of normalizing and tempering;
8) roughly machining a support ring forge piece of the ten-thousand-ton-level aluminum extrusion machine subjected to heat treatment after forging;
9) performing performance heat treatment on the roughly machined support ring forge piece of the ten-thousand-ton-level aluminum extrusion machine, wherein the performance heat treatment at least comprises one or more of quenching and tempering;
10) and performing finish machining on the ten-thousand-ton-level aluminum extruder support ring forge piece after the performance heat treatment.
According to the invention, the structural stress of the plate blank is eliminated through the step 1), so that the sealing and welding quality of the plate blank in the subsequent steps can be ensured.
And then, sawing the plate blank into small unit blanks, milling, cleaning and polishing the sawed small unit blanks to ensure that the roughness and the cleanliness of the unit blanks reach the standards, and ensuring the quality of the seal-welded blanks in the subsequent steps.
And stacking the unit blanks according to a preset sequence to prepare a stacked blank, and integrally filling the stacked blank into a vacuum chamber by adopting a vacuum electron beam sealing and welding technology to seal and weld to prepare the oversized sealing and welding steel ingot.
Compared with the traditional die casting process, the process for manufacturing the oversized steel ingot by adopting the additive manufacturing blank process has the following advantages:
(1) and the homogenization manufacturing of large-size metal devices is realized. A plurality of metal blanks with smaller volumes are used as construction elements, and the solidification speed of the metal blanks with smaller volumes is high, so that the component uniformity of the metal blanks is far better than that of large metal blanks integrally cast in the prior art, and large-size metal devices constructed on the basis do not have obvious macrosegregation.
(2) Realizing the densification manufacturing of large-size metal devices. A plurality of metal blanks with smaller volumes are used as construction elements, and the metal blanks with smaller volumes are solidified at a high speed almost at the same time, so that the concentrated shrinkage cavities in the blanks are less loose. After deformation, heat preservation and multidirectional forging of the welding interface, the compactness is higher than that of a forging piece made of a traditional integral casting blank.
(3) Realizing the purification manufacture of large-size metal devices. A plurality of metal blanks with smaller volume are used as construction elements, and the preparation cost and difficulty of the metal blanks with small volume are low, so that the purification of the elements can be realized by adopting various flexible refining methods, and the purity of a large-size metal device constructed on the basis is higher than that of a forging piece made of a traditional integral casting blank.
(4) Realizing low-cost manufacture of large-size metal devices. Because the metal blank with smaller volume can be prepared by adopting large production means such as continuous casting and the like, the manufacturing cost is far lower than that of a die casting means which must be adopted for preparing the metal blank with larger volume, and the manufacturing cost can be greatly reduced. In addition, the continuous casting billet is used as a construction element, the loss of a riser and a nozzle of the traditional steel ingot is avoided, and the material utilization rate can be effectively improved.
In this embodiment, the temperature of the heat treatment in step 1) is 850 ℃ to 880 ℃.
In this embodiment, the milling in step 3) includes milling the upper and lower surfaces of the unit blank, and the milling removal amount is 2-5mm, so that the roughness of the upper and lower surfaces of the unit blank reaches ra 3.2-12.5.
The step 3) of cleaning and polishing comprises cleaning and polishing the upper surface and the lower surface of the small unit blank so that the cleanness of the upper surface and the lower surface of the small unit blank reaches RFU (radio frequency unit) less than or equal to 20.0. For small unit blanks, the upper surface and the lower surface of the blank are key surfaces, and the roughness and the cleanliness of the upper surface and the lower surface have great influence on the quality of a subsequent sealing and welding blank. The roughness and the cleanliness of the upper surface and the lower surface are ensured through cleaning and polishing, so that the quality of a subsequent sealing and welding blank is ensured.
And further, milling four side surfaces of the small unit blank to enable the roughness of the four side surfaces of the unit blank to reach Ra6.3-25.
Further, the air pressure of the vacuum chamber in the primary unit blank vacuum seal welding is not more than 10-2Pa, welding voltage of 80-100KV, welding current of 100-150mA, and welding speed of 150-300 mm/min. And putting the seal welding blank into a gas heating furnace, wherein the furnace temperature is 1150-1250 ℃. And (3) carrying out three-dimensional forging on the seal welding blank, and then carrying out the working procedures of upsetting, drawing out, punching, drawing out a core rod and the like to obtain a ten-thousand-ton-level aluminum extruder support ring forging blank.
After forging, the support ring forge piece of the ten-thousand-ton-level aluminum extruder is subjected to heat treatment, so that grains can be refined, stress can be eliminated, and preparation is made for subsequent performance heat treatment.
The performance heat treatment comprises the items of stretching, impacting, hardness and the like, so that the prepared ten-thousand-ton-level aluminum extruder support ring forge piece can meet various performance requirements.
In this embodiment, the normalizing temperature in step 8) is 860-910 ℃, and the tempering temperature is 630-680 ℃.
In the embodiment, the surface roughness of the support ring forge piece of the ten-thousand-ton-grade aluminum extruder after rough machining in the step 9) is Ra6.3-12.5.
In this embodiment, the quenching temperature in step 10) is 860-910 ℃, and the tempering temperature is 600-650 ℃.
Example 2
In this embodiment, the manufacturing process of the present invention further includes an ultrasonic detection step between step 9) and step 10) of embodiment 1.
Detecting whether the internal quality of a support ring forge piece of a ten-thousand-ton-level aluminum extrusion machine is defective or not by ultrasonic detection; ultrasonic detection is an important process in the manufacturing process of a support ring forge piece of a ten-thousand-ton-grade aluminum extrusion machine, and can be used for detecting whether the internal quality of the forge piece is defect-free or not and whether preset standard requirements can be met or not.
In addition, a sampling detection step is provided after the ultrasonic detection step.
The sampling detection step at least comprises one of sample decomposition and physical and chemical detection.
Example 3
In this embodiment, a ten-thousand-ton aluminum extruder support ring forging is manufactured, and the material of the forging is 20 MnMo.
The diameter of the support ring forging reaches 3270mm, the maximum wall thickness reaches 1210mm, the height is 2500mm, the weight of a forging blank exceeds 150 tons, if the traditional die casting steel ingot in the prior art is adopted for manufacturing, the weight of the steel ingot exceeds 240 tons, the defects of steel ingot composition segregation, internal shrinkage cavity, inclusion and the like cause adverse effects on the hardness, uniformity and service life of the forging, and the manufacturing difficulty is very high. Therefore, the ten-thousand-ton-level aluminum extruder support ring forge piece is manufactured by combining the additive manufacturing forming process and the free forging process.
The invention discloses a manufacturing method of a support ring forging of a ten-thousand-ton-level aluminum extrusion machine, which comprises the following steps of:
1) heat treatment of the plate blank: after the plate blank is qualified by the reinspection, in order to eliminate the internal stress of the plate blank and ensure the sealing welding quality, stress relief heat treatment is carried out, and the heating temperature is 850-880 ℃.
Preferably, the heat treatment temperature is 860 ℃. + -. 10 ℃.
2) Sawing the plate blank: and cutting the plate blank according to the preset size to obtain a plurality of small unit blanks. Preferably, the slab is sawn into small unit blanks of size (length x width x height) 2400x2215x250mm, 17 blocks total.
3) Milling: 6 surfaces of the small unit blank are milled. Preferably, the small unit blank is processed to 2200x2385x240mm in size (length x width x height) so that the roughness of the upper and lower surfaces reaches Ra6.3, and the roughness of the rest four side surfaces reaches Ra12.5.
4) Cleaning and polishing: and cleaning and polishing the upper surface and the lower surface of the small unit blank. Preferably, the cleanness of the upper surface and the lower surface of the stainless steel plate is RFU less than or equal to 20.0.
5) Assembling: and assembling the treated small unit blanks on a stacking platform according to a preset sequence, wherein the time for integrally loading the small unit blanks into a vacuum chamber is less than or equal to 12 hours.
6) Vacuum sealing and welding of the primary small unit blank: the air pressure of the vacuum chamber in the first-stage small unit blank vacuum sealing welding is not more than 10-2Pa, welding voltage of 80-100KV, welding current of 100-150mA, and welding speed of 150-300 mm/min.
Preferably, the vacuum chamber has a pressure of 10 deg.C or less-2Pa, welding voltage of 100KV, welding current of 120mA, and welding speed of 200 mm/min.
7) Heating: and putting the seal welding blank into a gas heating furnace, wherein the furnace temperature is 1150-1250 ℃. Preferably, the furnace temperature is 1250 ± 20 ℃.
8) Building and forming: and (5) performing three-way forging on the seal welding blank.
9) Forging and cogging: the seal welding blank is processed by three-dimensional forging, upsetting, punching, chambering and the like. Preferably, the cogging size is 3450/700/2200 mm.
10) Forging and forming: drawing a blank by adopting a core rod, rounding an upper flat anvil and a lower V-shaped anvil, stepping on a step, shaping and the like. Preferably, the forging blank size is phi 3370/phi 700/2650mm
11) Heat treatment after forging: adopting the normalizing and tempering heat treatment process, the normalizing temperature is 870-.
12) Rough machining: the rough machining requires that the surface of the forged piece is not allowed to have defects such as cracks, folds and the like, and the surface roughness reaches Ra6.3-12.5.
13) Performance heat treatment: is a heat treatment performed to meet predetermined performance requirements, including at least one of tensile, impact, hardness, and the like. The quenching temperature in the performance heat treatment is 860-910 ℃, and the tempering temperature is 600-650 ℃.
14) Semi-finishing: the semi-finishing requires that the forgings are totally exposed to light, and the roughness reaches Ra6.3.
15) Ultrasonic detection: and (4) performing according to JB/T5000.15, and checking whether the internal quality of the forge piece has defects or not and can meet the standard requirements or not.
16) Sampling: at least one of decomposition of the sample and physical and chemical detection is included.
17) Finish machining: the support ring forging of the ten-thousand-ton aluminum extruder meets the requirements of the drawing.
18) And (6) packaging.
After multiple tests, the nondestructive testing and mechanical properties of the ten-thousand-ton-level aluminum extrusion machine support ring forge piece manufactured by the method disclosed by the embodiment can meet the requirements of technical specifications.
The above description is only for the specific embodiments of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art can easily conceive various changes or substitutions within the technical scope of the present invention, which should be covered by the scope of the present invention.
Furthermore, the present invention may repeat reference numerals and/or letters in the various examples, such repetition is for the purpose of simplicity and clarity and does not in itself dictate a relationship between the various embodiments and/or configurations discussed. In addition, the present invention provides examples of various specific processes and materials, but one of ordinary skill in the art may recognize other processes and/or uses of other materials.
Claims (10)
1. A manufacturing process of a support ring forging of a ten-thousand-ton-level aluminum extrusion machine is characterized by comprising the following steps of:
(1) carrying out heat treatment on the plate blank to eliminate the structural stress of the plate blank;
(2) sawing the plate blank according to a preset size to obtain a small unit blank;
(3) milling the small unit blank to enable the roughness of the small unit blank to reach a preset roughness threshold, and cleaning and polishing the milled small unit blank to enable the cleanliness of the small unit blank to reach a preset cleanliness threshold;
(4) stacking the treated small unit blanks on a stacking platform according to a preset sequence to obtain stacked blanks;
(5) putting the whole stacked blank into a vacuum chamber for vacuum electron beam sealing welding to prepare a sealing welding blank;
(6) forging and forming the seal welding blank, wherein the forging and forming at least comprises one or more of upsetting, drawing out, punching and drawing out of a core rod to obtain a support ring forging of an aluminum extruder;
(7) carrying out post-forging heat treatment on the support ring forge piece subjected to forging forming, wherein the post-forging heat treatment at least comprises one or more of normalizing and tempering;
(8) roughly processing the forged support ring forge piece of the aluminum extruder after the heat treatment after forging;
(9) performing performance heat treatment on the roughly machined support ring forge piece of the aluminum extrusion machine, wherein the performance heat treatment at least comprises one or more of quenching and tempering;
(10) and performing finish machining on the support ring forging of the aluminum extruder after the performance heat treatment.
2. The process for manufacturing a support ring forging of a ten-thousand-ton-class aluminum extruder according to claim 1, wherein the temperature of the heat treatment in the step 1) is 850-880 ℃.
3. The process for manufacturing a support ring forging of a ten-thousand-ton-class aluminum extruder according to claim 1, wherein the milling in the step 3) comprises milling the upper surface and the lower surface of the small unit blank, and the milling removal amount is 2-5mm, so that the roughness of the upper surface and the lower surface of the small unit blank reaches Ra3.2-12.5;
and milling four side surfaces of the small unit blank to enable the roughness of the four side surfaces of the small unit blank to reach Ra6.3-12.5.
4. The process for manufacturing a support ring forging of a ten-thousand-ton-class aluminum extruder as claimed in claim 1, wherein the cleaning and grinding in the step 3) comprises cleaning and grinding the small surfaces and the lower surfaces of the unit blank, so that the cleanliness of the upper surface and the lower surface of the unit blank reaches RFU (ring surface cleanliness) less than or equal to 20.
5. The process of manufacturing a support ring forging of a ten-thousand-ton-class aluminum extrusion press as claimed in claim 1, wherein the vacuum electron beam sealing in step 5) is one-stage sealing, and the air pressure of a vacuum chamber in the one-stage unit blank vacuum sealing is not more than 10-2Pa, welding voltage of 80-100KV, welding current of 100-150mA, welding speed of 150-300mm/min, and furnace temperature of 1150-1250 ℃.
6. The process for manufacturing a support ring forging of a ten-thousand-ton-class aluminum extruder according to claim 1, wherein the temperature of the normalizing in the step 7) is 870-930 ℃, and the temperature of the tempering is 630-680 ℃.
7. The process for manufacturing a ten-thousand-ton-grade aluminum extruder support ring forging according to claim 1, wherein the surface roughness of the rough machined aluminum extruder support ring forging in the step 8) is Ra6.3-12.5.
8. The process for manufacturing a support ring forging of a ten-thousand-ton-class aluminum extruder according to claim 1, wherein the quenching temperature in the step 9) is 860 ℃ to 910 ℃, and the tempering temperature is 600 ℃ to 650 ℃.
9. The process for manufacturing a ten-thousand-ton-grade aluminum extruder support ring forging according to claim 1, characterized in that the method further comprises a step of ultrasonic detection between the step 9) and the step 10), wherein the ultrasonic detection is used for detecting whether the internal quality of the aluminum extruder support ring forging has defects.
10. The process for manufacturing a support ring forging of a ten-thousand-ton-class aluminum extrusion machine according to claim 9, wherein the ultrasonic testing step is followed by a sampling testing step, and the sampling testing step at least comprises one of sample decomposition and physical and chemical testing.
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Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108188659A (en) * | 2017-12-21 | 2018-06-22 | 中国原子能科学研究院 | A kind of manufacturing process of steel billet |
| CN110405413A (en) * | 2019-06-28 | 2019-11-05 | 伊莱特能源装备股份有限公司 | Multilayer slab vacuum seal method |
| CN112935708A (en) * | 2020-12-14 | 2021-06-11 | 伊莱特能源装备股份有限公司 | Manufacturing process of ultra-large wheel belt forge piece |
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Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108188659A (en) * | 2017-12-21 | 2018-06-22 | 中国原子能科学研究院 | A kind of manufacturing process of steel billet |
| CN110405413A (en) * | 2019-06-28 | 2019-11-05 | 伊莱特能源装备股份有限公司 | Multilayer slab vacuum seal method |
| CN112935708A (en) * | 2020-12-14 | 2021-06-11 | 伊莱特能源装备股份有限公司 | Manufacturing process of ultra-large wheel belt forge piece |
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