CN115164588B - Preparation method of high-resistance electrothermal alloy - Google Patents
Preparation method of high-resistance electrothermal alloy Download PDFInfo
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- CN115164588B CN115164588B CN202211086830.1A CN202211086830A CN115164588B CN 115164588 B CN115164588 B CN 115164588B CN 202211086830 A CN202211086830 A CN 202211086830A CN 115164588 B CN115164588 B CN 115164588B
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- 239000000956 alloy Substances 0.000 title claims abstract description 69
- 229910045601 alloy Inorganic materials 0.000 title claims abstract description 69
- 238000002360 preparation method Methods 0.000 title claims abstract description 15
- 238000003723 Smelting Methods 0.000 claims abstract description 126
- 239000004615 ingredient Substances 0.000 claims abstract description 31
- 239000007788 liquid Substances 0.000 claims abstract description 12
- 239000012535 impurity Substances 0.000 claims abstract description 10
- 238000005086 pumping Methods 0.000 claims abstract description 9
- 230000000903 blocking effect Effects 0.000 claims abstract description 6
- 230000035939 shock Effects 0.000 claims description 12
- 238000000034 method Methods 0.000 claims description 7
- 229910052761 rare earth metal Inorganic materials 0.000 claims description 7
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical group [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 claims description 6
- 239000002994 raw material Substances 0.000 claims description 5
- 229910052759 nickel Inorganic materials 0.000 claims description 3
- 238000005096 rolling process Methods 0.000 claims description 3
- 238000007789 sealing Methods 0.000 claims description 3
- 230000008878 coupling Effects 0.000 claims 9
- 238000010168 coupling process Methods 0.000 claims 9
- 238000005859 coupling reaction Methods 0.000 claims 9
- 244000309464 bull Species 0.000 claims 1
- 229910052751 metal Inorganic materials 0.000 abstract description 14
- 239000002184 metal Substances 0.000 abstract description 14
- 244000025254 Cannabis sativa Species 0.000 abstract description 11
- 235000012766 Cannabis sativa ssp. sativa var. sativa Nutrition 0.000 abstract description 11
- 235000012765 Cannabis sativa ssp. sativa var. spontanea Nutrition 0.000 abstract description 11
- 235000009120 camo Nutrition 0.000 abstract description 11
- 235000005607 chanvre indien Nutrition 0.000 abstract description 11
- 239000011487 hemp Substances 0.000 abstract description 11
- 238000005485 electric heating Methods 0.000 abstract description 4
- 230000003647 oxidation Effects 0.000 description 16
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- 239000000463 material Substances 0.000 description 13
- 238000004519 manufacturing process Methods 0.000 description 5
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 4
- WGLPBDUCMAPZCE-UHFFFAOYSA-N Trioxochromium Chemical compound O=[Cr](=O)=O WGLPBDUCMAPZCE-UHFFFAOYSA-N 0.000 description 4
- 229910000423 chromium oxide Inorganic materials 0.000 description 4
- 230000000694 effects Effects 0.000 description 4
- 229910052710 silicon Inorganic materials 0.000 description 4
- 239000010703 silicon Substances 0.000 description 4
- 238000004804 winding Methods 0.000 description 4
- 238000010521 absorption reaction Methods 0.000 description 3
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- 238000003860 storage Methods 0.000 description 3
- 238000013459 approach Methods 0.000 description 2
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 2
- 238000001816 cooling Methods 0.000 description 2
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- 235000012239 silicon dioxide Nutrition 0.000 description 2
- 239000000377 silicon dioxide Substances 0.000 description 2
- 229910052727 yttrium Inorganic materials 0.000 description 2
- VWQVUPCCIRVNHF-UHFFFAOYSA-N yttrium atom Chemical group [Y] VWQVUPCCIRVNHF-UHFFFAOYSA-N 0.000 description 2
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Images
Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27B—FURNACES, KILNS, OVENS, OR RETORTS IN GENERAL; OPEN SINTERING OR LIKE APPARATUS
- F27B14/00—Crucible or pot furnaces
- F27B14/04—Crucible or pot furnaces adapted for treating the charge in vacuum or special atmosphere
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27B—FURNACES, KILNS, OVENS, OR RETORTS IN GENERAL; OPEN SINTERING OR LIKE APPARATUS
- F27B14/00—Crucible or pot furnaces
- F27B14/08—Details peculiar to crucible or pot furnaces
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27B—FURNACES, KILNS, OVENS, OR RETORTS IN GENERAL; OPEN SINTERING OR LIKE APPARATUS
- F27B14/00—Crucible or pot furnaces
- F27B14/08—Details peculiar to crucible or pot furnaces
- F27B14/0806—Charging or discharging devices
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27B—FURNACES, KILNS, OVENS, OR RETORTS IN GENERAL; OPEN SINTERING OR LIKE APPARATUS
- F27B14/00—Crucible or pot furnaces
- F27B14/04—Crucible or pot furnaces adapted for treating the charge in vacuum or special atmosphere
- F27B2014/045—Vacuum
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27B—FURNACES, KILNS, OVENS, OR RETORTS IN GENERAL; OPEN SINTERING OR LIKE APPARATUS
- F27B14/00—Crucible or pot furnaces
- F27B14/08—Details peculiar to crucible or pot furnaces
- F27B14/0806—Charging or discharging devices
- F27B2014/0818—Discharging
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27M—INDEXING SCHEME RELATING TO ASPECTS OF THE CHARGES OR FURNACES, KILNS, OVENS OR RETORTS
- F27M2003/00—Type of treatment of the charge
- F27M2003/13—Smelting
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Vertical, Hearth, Or Arc Furnaces (AREA)
- Manufacture And Refinement Of Metals (AREA)
Abstract
The invention belongs to the technical field of electrothermal alloy preparation, and particularly relates to a preparation method of a high-resistance electrothermal alloy; adding the ingredients into a smelting furnace for vacuum-pumping smelting; placing the secondary ingredients into a bucket, hoisting the bucket into the smelting cavity, blocking a hanging arm by a top opening of the smelting cavity, driving a sliding rod and a rope to slide upwards, unfolding a baffle plate, and putting the secondary ingredients into a smelting furnace for vacuum smelting; pouring the molten alloy liquid into a launder for pouring under vacuum to obtain the high-resistance electrothermal alloy; the hanging arm is blocked by the top opening of the smelting cavity, the baffle seat is driven to slide upwards, the slide rod is driven to slide upwards, the rope is driven to slide upwards, the baffle is pulled and unfolded, and secondary ingredients are put into the smelting furnace for vacuum smelting; the automatic opening and closing of the baffle at the bottom of the bucket are realized, the probability that the bottom of the bucket contacts molten metal is reduced, and the hemp ropes are not used, so that impurities in the electric heating resistance alloy are reduced.
Description
Technical Field
The invention belongs to the technical field of electrothermal alloy preparation, and particularly relates to a preparation method of a high-resistance electrothermal alloy.
Background
The high resistance electrothermal alloy is used for manufacturing conductive materials of resistance elements and can be used for manufacturing heating elements in various resistance heating devices; with the development of the household appliance industry and the wide use of various industrial electric furnaces, the demand of high-resistance electrothermal alloy is increased sharply. At present, the electric heating element used in industry requires that the material has the excellent performances of high melting point, small thermal expansion coefficient, good oxidation resistance and good high-temperature strength, and also requires that the material has higher resistivity.
When the existing high-resistance electrothermal alloy is smelted, ingredients are added into a smelting furnace for vacuum-pumping smelting; after the complete melting of the inside batching of smelting furnace, carry out the secondary batching according to the proportion, put into the well-bucket with the secondary batching inside, use the rope made of hemp to tie up the bottom of well-bucket tightly, add the material tower with the inside of well-bucket handling income smelting cavity, the high temperature of smelting furnace burns the rope made of hemp for the secondary batching falls into inside the smelting furnace, puts into the smelting furnace with the secondary batching and carries out vacuum smelting.
Current smelting furnace when the secondary is reinforced, need use the rope made of hemp to tie up the bottom of well-bucket, utilizes the inside high temperature of smelting furnace to blow off the rope made of hemp, but inside the smelting furnace that needs the bottom contact of well-bucket this moment for molten metal that melts contacts the rope made of hemp, not only causes the molten metal that melts to be stained with the bottom of well-bucket, in the molten metal that melts can be sneaked into to the ashes of rope made of hemp moreover, causes the inside impurity of high resistance electrothermal alloy to increase.
Therefore, the invention provides a preparation method of the high-resistance electrothermal alloy.
Disclosure of Invention
To remedy the deficiencies of the prior art, at least one of the technical problems set forth in the background is addressed.
The technical scheme adopted by the invention for solving the technical problems is as follows: the invention relates to a preparation method of a high-resistance electrothermal alloy, which comprises the following steps:
s1: performing primary burdening according to the proportion, adding the primary burdening into a smelting furnace, and closing a smelting cavity for vacuum-pumping smelting; the cavity of the smelting furnace is filled to two thirds of the way by the primary burdening, but a large number of gaps exist in the cavity, and after the smelting is carried out to form molten metal, the existing gaps are filled by the molten metal, so that the filling volume of the cavity of the smelting furnace is increased, and the secondary burdening is needed for filling and smelting;
s2: after the ingredients in the smelting furnace are completely melted, performing secondary ingredients according to a proportion, putting the secondary ingredients into a bucket, taking the bucket into a cylinder by a feeding tower, rotating the feeding tower, connecting the cylinder with a feeding port at the top of a smelting cavity, and vacuumizing the cylinder of the feeding tower; the secondary ingredients are completely consistent with the primary ingredients in terms of components, and only the weight difference exists, so that the secondary ingredients can be changed according to actual requirements;
s3: the bucket is lifted into the smelting cavity, the hanging arm is blocked by the opening at the top of the smelting cavity to drive the sliding rod and the rope to slide upwards, the baffle is unfolded, and secondary ingredients are put into the smelting furnace for vacuum smelting;
s4: after the smelting is finished, the smelting furnace is inclined under the pushing of the hydraulic cylinder, the molten alloy liquid is poured into a launder for pouring in a vacuum downward inclination mode, and the high-resistance electrothermal alloy is obtained after cooling in the vacuum mode.
Preferably, the high-resistance electrothermal alloy consists of the following raw materials in percentage by mass: c:0.002-0.008%, si:0.8-3%, mn:0.06-0.2%, al:0.3-0.8%, cr:16-25%, ti:0.1-0.3%, rare earth elements: 0.1-0.3%, B:0.02-0.05%, S is less than or equal to 0.0001%, and the balance is nickel and inevitable impurities; in the embodiment, the specific components of the high-resistance electrothermal alloy are only used as a feasible raw material proportion of the preparation method, and the specific components and proportion can be added and deleted according to actual requirements during specific production;
cr is added to form a chromium oxide film on the surface of the alloy at high temperature, so that the high-temperature oxidation resistance of the alloy can be effectively improved, and the service life of the alloy is prolonged; silicon dioxide formed after the high-temperature oxidation of Si is distributed at the interface of the chromium oxide film and the matrix metal, so that the oxygen permeation is prevented, and the oxidation speed of the alloy is reduced; mn improves the toughness, strength, hardness and wear resistance of the alloy and improves the hot workability of the alloy; ti effectively improves the high-temperature mechanical property and oxidation resistance of the alloy and improves the corrosion resistance; the rare earth element is yttrium element, and silicon and the rare earth element exist simultaneously, so that the compactness of the oxidation resistant film is improved, and the effect of improving the oxidation resistance of silicon is more remarkable; thereby improving the oxidation resistance of the high-resistance electrothermal alloy and prolonging the service life of the high-resistance electrothermal alloy.
Preferably, a smelting furnace is arranged inside the smelting cavity, a feed inlet is communicated with the top of the smelting cavity, a sealing cover is hinged inside the feed inlet, a feeding tower is arranged on one side of the smelting cavity, two ends of a top cross beam of the feeding tower are fixedly connected with a barrel, an inner cavity is formed in the top of the barrel, a winch is rotatably arranged inside the inner cavity, a motor is fixedly connected to the side wall of the top of the barrel, a rotating shaft of the motor is fixedly connected with the middle of the winch, a pulling rope is uniformly wound on the inner ring of the winch, one end of the pulling rope is fixedly connected with the winch, a through hole is formed in the middle of the bottom surface of the inner cavity, the pulling rope penetrates through the through hole, and a hanging barrel is fixedly connected to the lower end of the pulling rope, the outer wall of the bucket is in sliding fit with the inner wall of the barrel, a plurality of baffles are hinged to the outer ring of the bottom surface of the bucket in a surrounding mode, a plurality of vertical cylinders are fixedly connected to the outer wall of the bucket, slide rods are slidably mounted inside the vertical cylinders and penetrate through the top ends and the bottom ends of the vertical cylinders, circular plates are fixedly connected to the outer wall of the middle portions of the slide rods, a second spring is fixedly connected between the top surfaces of the circular plates and the inner top surfaces of the vertical cylinders, blocking seats are fixedly connected to the top ends of the slide rods, hanging arms are hinged to the sides, away from the bucket, of the blocking seats, torsional springs are arranged on the outer rings of rotating shafts of the hanging arms, hanging lugs are fixedly connected to the lower ends of the slide rods, ropes are connected between the two ends of the hanging lugs and the adjacent baffles, and a plurality of rollers are arranged at the tops of the hanging arms; during operation, the materials are proportioned according to a proportion, added into a smelting furnace, a smelting cavity is closed for vacuum-pumping smelting, after the materials in the smelting furnace are completely melted, the secondary materials are proportioned and put into a bucket, a motor drives a winch to rotate, a guy cable is retracted and wound on the winch, the bucket is put into a barrel body, a feeding tower rotates, the barrel body is connected with a feeding port at the top of the smelting cavity, and the barrel body of the feeding tower is vacuumized; the hanging barrel is lifted into the smelting cavity, so that the bottom of the hanging barrel is positioned at the top of the smelting furnace, the hanging arm is rotated outwards under the action of a torsion spring, the hanging arm is blocked by the top opening of the smelting cavity, the baffle seat is driven to slide upwards, the slide rod is driven to slide upwards, the second spring is compressed, the rope is driven to slide upwards, the baffle plate is pulled and unfolded, and secondary ingredients are put into the smelting furnace for vacuum smelting; the automatic opening and closing of the baffle at the bottom of the bucket are realized, the probability that the bottom of the bucket contacts molten metal is reduced, and the hemp ropes are not used, so that impurities in the resistance electrothermal alloy are reduced.
Preferably, a plurality of embedded seats are fixedly connected to the outer wall of the bucket uniformly in a surrounding manner, a sliding groove is formed in one side, away from the bucket, of each embedded seat, a sliding block is slidably mounted inside the sliding groove, a push rod is fixedly connected to the top surface of each sliding block, the push rod penetrates through the top wall of the sliding groove in a sliding manner, a first spring is fixedly connected between the bottom surface of each sliding block and the bottom surface of the sliding groove, supporting rods are hinged to the bottom of one side, away from the bucket, of each sliding block and the bottom of one side, away from the bucket, of each sliding groove, and pushing blocks are hinged to the ends, away from the sliding groove, of the supporting rods on two sides; when the charging tower drives the barrel to rotate, the bucket impacts the inner wall of the barrel under the action of inertia force, and the barrel is damaged after long-term use; the during operation, the well-bucket is drawn into the inside of barrel by the cable, when the well-bucket is close to the top of barrel, the top of push rod and the inner wall top surface contact of barrel, the inside of spout is slided into to the push rod, promote the slider and slide down along the spout for a spring compression, the bracing piece of both sides is close to mutually, promote the outside circle of ejector pad and remove, make the inside of a plurality of ejector pad contact extrusion barrels, thereby fix the well-bucket, the rocking of well-bucket has been reduced, the probability that the well-bucket strikes the barrel inner wall has been reduced.
Preferably, a plurality of balls are arranged on one surface, far away from the bucket, of the push block in a rolling manner, a high-temperature-resistant shock pad is fixedly connected to the outer wall of each ball, and a plurality of air cavities are formed in the high-temperature-resistant shock pad; when the bucket lifting device works, when the push blocks are close to the inner wall of the barrel body, the high-temperature-resistant shock absorption pads are in contact with the inner wall of the barrel body, the balls roll, the bucket slides in the barrel body, and the bucket can be conveniently moved out of the barrel body; through the elasticity of the high temperature resistant shock pad, the shaking of the bucket and the impact force on the barrel are further reduced.
Preferably, arc chamfers are arranged on two sides of the top of the through hole, and the directions of the arc chamfers are the same as the axial direction of the winch; through setting up the arc chamfer with the top of through-hole, reduced the frictional force at cable and through-hole top edge, reduced the cable wearing and tearing condition, improved the life of cable.
Preferably, a square ring seat is fixedly connected to the bottom surface of the inner cavity, guide grooves are formed in two sides of the inner wall of the square ring seat, the guide grooves are formed in the same direction as the axial direction of the winch, a square sliding ring is arranged on the inner ring of the square ring seat, a plurality of guide wheels are rotatably mounted on two sides of the square sliding ring, the outer wall of each guide wheel is in sliding fit with the inner wall of each guide groove, and the inhaul cable penetrates through the inner ring of the square sliding ring; during operation, when the capstan winch retrieved and released the cable, the cable moved along the outer lane of capstan winch, and the cable drove square sliding ring and moved along the guide slot for the cable keeps vertical state with the capstan winch all the time, has reduced the cable and has taken place winding probability, thereby stability when having improved the handling well-bucket.
Preferably, sliding holes are formed in two sides of the middle of the square sliding ring, the opening direction of each sliding hole is the same as the axial direction of the winch, rotating rods are rotatably mounted inside the sliding holes, a guide ring is fixedly connected between the rotating rods on two sides, and the inhaul cable penetrates through the inner ring of the guide ring; during operation, when the inhaul cable slides in the middle of the square sliding ring, the inhaul cable penetrates through the guide ring, so that the guide ring drives the rotating rod to rotate in the sliding hole, and the probability of knotting caused by winding of the inhaul cable is further reduced.
Preferably, a circular ring groove is formed in the outer ring of the middle of the sliding hole, a first circular plate is fixedly connected to the outer ring of the middle of the rotating rod, the outer wall of the first circular plate is in sliding fit with the inner wall of the circular ring groove, magnets are embedded in the top end of the circular ring groove and the top surface of the first circular plate, and the magnets attract each other; during operation, when the rotating rod rotates in the sliding hole, the first circular plate rotates in the circular ring groove, the magnets on the two sides attract each other, the relative position of the first circular plate and the circular ring groove is kept at a fixed position, the guide ring returns to the horizontal position after rotating, and therefore stability of the stay cable during recovery and release is improved.
The invention has the following beneficial effects:
1. the invention relates to a preparation method of a high-resistance electrothermal alloy, which comprises the steps of arranging a vertical cylinder, a slide rod, a circular plate, a second spring, a baffle seat, a hanging arm, a hanging lug and a rope; the hanging barrel is lifted into the smelting cavity, so that the bottom of the hanging barrel is positioned at the top of the smelting furnace, the hanging arm is rotated outwards under the action of a torsion spring, the hanging arm is blocked by the top opening of the smelting cavity, the baffle seat is driven to slide upwards, the slide rod is driven to slide upwards, the second spring is compressed, the rope is driven to slide upwards, the baffle plate is pulled and unfolded, and secondary ingredients are put into the smelting furnace for vacuum smelting; the automatic opening and closing of the baffle at the bottom of the bucket are realized, the probability that the bottom of the bucket contacts molten metal is reduced, and the hemp ropes are not used, so that impurities in the electric heating resistance alloy are reduced.
2. The invention relates to a preparation method of a high-resistance electrothermal alloy, which comprises the steps of proportioning according to a proportion, adding the proportioned materials into a smelting furnace, closing a smelting cavity for vacuum-pumping smelting, performing secondary proportioning according to the proportion after the proportioned materials in the smelting furnace are completely molten, putting the secondary proportioned materials into a bucket, driving a winch to rotate by a single motor, withdrawing and winding a stay rope on the winch, taking the bucket into a cylinder, rotating a feeding tower, connecting the cylinder with a feeding port at the top of the smelting cavity, and vacuumizing the cylinder of the feeding tower; the bucket is lifted into the smelting cavity, and the secondary ingredients are put into the smelting furnace for vacuum smelting; after the smelting is finished, the smelting furnace is inclined under the pushing of the hydraulic cylinder, the molten alloy liquid is poured into a launder for pouring under vacuum, and the molten alloy liquid is cooled under vacuum to obtain the high-resistance electrothermal alloy, so that the probability of air oxidation during smelting of the high-resistance electrothermal alloy caused by air entering a smelting cavity due to feeding is reduced, and the preparation quality of the high-resistance electrothermal alloy is improved.
Drawings
The invention will be further described with reference to the accompanying drawings.
FIG. 1 is a perspective view of a first embodiment of the present invention;
FIG. 2 is a cross-sectional view of a first embodiment of the present invention;
FIG. 3 is a perspective view of a bucket according to an embodiment of the present invention;
FIG. 4 is a cross-sectional view of a chimney in accordance with an embodiment of the present invention;
FIG. 5 is a cross-sectional view of an insert according to an embodiment of the present invention;
FIG. 6 is an enlarged view of a portion A of FIG. 2;
FIG. 7 is an enlarged view of a portion of FIG. 6 at B;
FIG. 8 is a perspective view of a second bucket embodiment of the present invention;
FIG. 9 is a partial cross-sectional view of a second upright of an embodiment of the present invention;
FIG. 10 is an enlarged view of a portion of FIG. 9 at C;
FIG. 11 is a flow chart of a method of making the present invention;
in the figure: 1. a smelting cavity; 2. smelting a furnace; 3. a charging tower; 4. a barrel; 5. a bucket; 6. a feed inlet; 7. an inner cavity; 8. a winch; 9. a motor; 10. a pull cable; 11. a through hole; 12. a baffle plate; 13. embedding a seat; 14. a chute; 15. a slider; 16. a push rod; 17. a first spring; 18. a support bar; 19. a push block; 20. a ball bearing; 21. a high temperature resistant shock pad; 22. a square ring seat; 23. a guide groove; 24. a square slip ring; 25. a guide wheel; 26. a slide hole; 27. a rotating rod; 28. a guide ring; 29. a circular ring groove; 30. a first circular plate; 31. a magnet; 32. a guide rail; 33. a column; 34. a tension spring; 35. a receiving groove; 36. a connecting cable; 37. a stopper; 38. a floating ring; 39. a bolt; 40. a vertical cylinder; 41. a slide bar; 42. a second circular plate; 43. a second spring; 44. a blocking seat; 45. hanging arms; 46. hanging a lug; 47. a rope.
Detailed Description
The present invention will be further described with reference to the following detailed description so that the technical means, the creation features, the achievement purposes and the effects of the present invention can be easily understood.
Example one
As shown in fig. 11, a method for preparing a high resistance electrothermal alloy according to an embodiment of the present invention includes the following steps:
s1: performing primary burdening according to a proportion, adding the primary burdening into a smelting furnace 2, and closing a smelting cavity 1 for vacuum-pumping smelting; the cavity of the smelting furnace is filled to two thirds of the way by the primary burdening, but a large number of gaps exist in the cavity, and after the smelting is carried out to form molten metal, the existing gaps are filled by the molten metal, so that the filling volume of the cavity of the smelting furnace is increased, and the secondary burdening is needed for filling and smelting;
s2: after the ingredients in the smelting furnace are completely melted, performing secondary ingredients according to a proportion, putting the secondary ingredients into a bucket, taking the bucket into a cylinder by a feeding tower, rotating the feeding tower, connecting the cylinder with a feeding port at the top of a smelting cavity, and vacuumizing the cylinder of the feeding tower; the components of the secondary ingredients are completely consistent with those of the primary ingredients, and the weight of the secondary ingredients is different from that of the primary ingredients, so that the secondary ingredients can be changed according to actual requirements;
s3: the bucket 5 is lifted into the smelting cavity 1, the hanging arm 45 is blocked by the top opening of the smelting cavity 1, the sliding rod 41 and the rope 47 are driven to slide upwards, the baffle 12 is unfolded, and secondary ingredients are put into the smelting furnace 2 for vacuum smelting;
s4: after the smelting is finished, the smelting furnace 2 is inclined under the pushing of the hydraulic cylinder, the molten alloy liquid is poured into a launder for pouring in a vacuum downward inclination mode, and the high-resistance electrothermal alloy is obtained after cooling in the vacuum mode.
The high-resistance electrothermal alloy comprises the following raw materials in percentage by mass: c:0.002-0.008%, si:0.8-3%, mn:0.06-0.2%, al:0.3-0.8%, cr:16-25%, ti:0.1-0.3%, rare earth elements: 0.1-0.3%, B:0.02-0.05%, S is less than or equal to 0.0001%, and the balance is nickel and inevitable impurities; in the embodiment, the specific components of the high-resistance electrothermal alloy are only used as a feasible raw material proportion of the preparation method, and the specific components and proportion can be added and deleted according to actual requirements during specific production;
cr is added to form a chromium oxide film on the surface of the alloy at high temperature, so that the high-temperature oxidation resistance of the alloy can be effectively improved, and the service life of the alloy is prolonged; silicon dioxide formed after the high-temperature oxidation of Si is distributed at the interface of the chromium oxide film and the matrix metal, so that the oxygen permeation is prevented, and the oxidation speed of the alloy is reduced; mn improves the toughness, strength, hardness and wear resistance of the alloy and improves the hot workability of the alloy; ti effectively improves the high-temperature mechanical property and oxidation resistance of the alloy and improves the corrosion resistance; the rare earth element is yttrium element, and silicon and the rare earth element exist simultaneously, so that the compactness of the oxidation resistant film is improved, and the effect of improving the oxidation resistance of silicon is more remarkable; thereby improving the oxidation resistance of the high-resistance electrothermal alloy and prolonging the service life of the high-resistance electrothermal alloy.
As shown in fig. 1 to 4, a smelting furnace 2 is arranged inside a smelting cavity 1, a charging opening 6 is communicated with the top of the smelting cavity 1, a sealing cover is hinged inside the charging opening 6, a charging tower 3 is arranged on one side of the smelting cavity 1, a barrel 4 is fixedly connected to both ends of a top beam of the charging tower 3, an inner cavity 7 is arranged on the top of the barrel 4, a winch 8 is rotatably arranged inside the inner cavity 7, a motor 9 is fixedly connected to a side wall of the top of the barrel 4, a rotating shaft of the motor 9 is fixedly connected to the middle of the winch 8, an inner ring of the winch 8 is uniformly wound with a guy cable 10, one end of the guy cable 10 is fixedly connected to the winch 8, a through hole 11 is arranged in the middle of the bottom surface of the inner cavity 7, the guy cable 10 penetrates through the through hole 11, and a bucket 5 is fixedly connected to the lower end of the guy cable 10, the outer wall of the bucket 5 is in sliding fit with the inner wall of the barrel 4, a plurality of baffles 12 are hinged around the outer ring of the bottom surface of the bucket 5, a plurality of vertical cylinders 40 are fixedly connected to the outer wall of the bucket 5, slide rods 41 are slidably mounted inside the vertical cylinders 40, the slide rods 41 penetrate through the top ends and the bottom ends of the vertical cylinders 40, a second circular plate 42 is fixedly connected to the outer wall of the middle of each slide rod 41, a second spring 43 is fixedly connected between the top surface of the second circular plate 42 and the inner top surface of each vertical cylinder 40, a stopper seat 44 is fixedly connected to the top end of each slide rod 41, a hanging arm 45 is hinged to one side, away from the bucket 5, of the stopper seat 44, a torsion spring is arranged on the outer ring of a rotating shaft of the hanging arm 45, a hanging lug 46 is fixedly connected to the lower end of each slide rod 41, a rope 47 is connected between the two ends of the hanging lug 46 and the adjacent baffles 12, and a plurality of rollers are arranged on the top of the hanging arm 45; during operation, the materials are proportioned according to a proportion, the proportioned materials are added into a smelting furnace 2, the smelting cavity 1 is closed for vacuum-pumping smelting, after the proportioned materials in the smelting furnace 2 are completely melted, the secondary proportioned materials are proportioned and put into a bucket 5, a motor 9 drives a winch 8 to rotate, a stay cable 10 is retracted and wound on the winch 8, the bucket 5 is put into a barrel 4, a feeding tower 3 rotates, the barrel 4 is connected with a feeding port 6 at the top of the smelting cavity 1, and the barrel 4 of the feeding tower 3 is vacuumized; the lifting bucket 5 is lifted into the smelting cavity 1, so that the bottom of the lifting bucket 5 is positioned at the top of the smelting furnace 2, the hanging arm 45 rotates outwards under the action of a torsion spring, the hanging arm 45 is blocked by the top opening of the smelting cavity 1, the baffle seat 44 is driven to slide upwards, the slide rod 41 is driven to slide upwards, the second spring 43 is compressed, the rope 47 is driven to slide upwards, the baffle 12 is pulled and unfolded, and secondary ingredients are put into the smelting furnace 2 for vacuum smelting; the automatic opening and closing of the baffle plate 12 at the bottom of the bucket 5 are realized, the probability that the bottom of the bucket contacts molten metal is reduced, and the hemp rope is not used, so that impurities in the resistance electrothermal alloy are reduced.
As shown in fig. 3 and 5, a plurality of insert seats 13 are uniformly fixedly connected to the outer wall of the bucket 5 in a surrounding manner, a sliding groove 14 is formed in one side, away from the bucket 5, of each insert seat 13, a sliding block 15 is slidably mounted inside each sliding groove 14, a push rod 16 is fixedly connected to the top surface of each sliding block 15, each push rod 16 slidably penetrates through the top wall of each sliding groove 14, a first spring 17 is fixedly connected between the bottom surface of each sliding block 15 and the bottom surface of each sliding groove 14, supporting rods 18 are respectively hinged to the bottom of one side, away from the bucket 5, of each sliding block 15 and the bottom of one side, away from the bucket 5, of each sliding groove 14, and a pushing block 19 is hinged to one end, away from the sliding groove 14, of each supporting rod 18 on two sides; when the feeding tower 3 drives the barrel 4 to rotate, the bucket 5 impacts the inner wall of the barrel 4 under the action of inertia force, and the barrel 4 is damaged after long-term use; during operation, well-bucket 5 is pulled into the inside of barrel 4 by cable 10, when well-bucket 5 is close to the top of barrel 4, the top of push rod 16 and the contact of the inner wall top surface of barrel 4, push rod 16 slides into the inside of spout 14, promote slider 15 and slide down along spout 14, make a spring 17 compress, the bracing piece 18 of both sides is close to mutually, it removes to the outer lane to promote ejector pad 19, make the inside of a plurality of ejector pads 19 contact extrusion barrel 4, thereby fix well-bucket 5, the rocking of well-bucket 5 has been reduced, the probability that well-bucket 5 strikes the inner wall of barrel 4 has been reduced.
As shown in fig. 5, a plurality of balls 20 are installed on one surface of the push block 19 away from the bucket 5 in a rolling manner, a high-temperature-resistant shock pad 21 is fixedly connected to the outer wall of each ball 20, and a plurality of air cavities are arranged inside each high-temperature-resistant shock pad 21; when the device works, when the push blocks 19 are close to the inner wall of the cylinder body 4, the high-temperature-resistant shock absorption pad 21 is in contact with the inner wall of the cylinder body 4, the ball bearings 20 roll, the bucket 5 slides in the cylinder body 4, and the bucket 5 can be conveniently moved out of the cylinder body 4; through the elasticity of the high temperature resistant shock pad 21 that sets up, further reduced rocking of well bucket 5 and the impact force to barrel 4.
As shown in fig. 6, arc chamfers are arranged on both sides of the top of the through hole 11, and the directions of the arc chamfers are the same as the axial direction of the winch 8; through setting up arc chamfer with the top of through-hole 11, reduced the frictional force at cable 10 and 11 top edges of through-hole, reduced the cable 10 wearing and tearing condition, improved cable 10's life.
As shown in fig. 6, a square ring seat 22 is fixedly connected to the bottom surface of the inner cavity 7, guide grooves 23 are formed in both sides of the inner wall of the square ring seat 22, the direction of the guide grooves 23 is the same as the axial direction of the winch 8, a square sliding ring 24 is arranged on the inner ring of the square ring seat 22, a plurality of guide wheels 25 are rotatably mounted on both sides of the square sliding ring 24, the outer walls of the guide wheels 25 are in sliding fit with the inner wall of the guide grooves 23, and the cable 10 penetrates through the inner ring of the square sliding ring 24; during operation, when capstan winch 8 retrieved and released cable 10, cable 10 removed along capstan winch 8's outer lane, and cable 10 drives square sliding ring 24 and removes along guide slot 23 for cable 10 keeps vertical state with capstan winch 8 all the time, has reduced cable 10 and has taken place winding probability, thereby stability when having improved handling well-bucket 5.
As shown in fig. 7, sliding holes 26 are formed in two sides of the middle of the square sliding ring 24, the opening direction of the sliding hole 26 is the same as the axial direction of the winch 8, a rotating rod 27 is rotatably installed inside the sliding hole 26, a guide ring 28 is fixedly connected between the rotating rods 27 on two sides, and the cable 10 penetrates through the inner ring of the guide ring 28; during operation, when the cable 10 slides in the middle of the square sliding ring 24, the cable 10 passes through the guide ring 28, so that the guide ring 28 drives the rotating rod 27 to rotate inside the sliding hole 26, and the probability of the cable 10 being wound and knotted is further reduced.
As shown in fig. 7, a circular ring groove 29 is formed in the middle outer ring of the sliding hole 26, a first circular plate 30 is fixedly connected to the middle outer ring of the rotating rod 27, the outer wall of the first circular plate 30 is in sliding fit with the inner wall of the circular ring groove 29, magnets 31 are embedded in the top end of the circular ring groove 29 and the top surface of the first circular plate 30, and the magnets 31 attract each other on the two surfaces; in operation, when the rotating rod 27 rotates inside the sliding hole 26, the first circular plate 30 rotates inside the circular ring groove 29, the magnets 31 on both sides attract each other, so that the relative position of the first circular plate 30 and the circular ring groove 29 is kept at a fixed position, the guide ring 28 returns to a horizontal position after rotation, and the stability of the cable 10 during recovery and release is improved.
Example two
As shown in fig. 8 to 10, a first comparative example, in which another embodiment of the present invention is: the outer wall of the bucket 5 is uniformly and fixedly connected with a plurality of guide rails 32 in a surrounding manner, the guide rails 32 and the embedded seats 13 are alternately distributed, an upright column 33 is slidably mounted on the outer ring of the guide rail 32, a tension spring 34 is fixedly connected between the top surface of a groove of the upright column 33 and the top end of the guide rail 32, a storage groove 35 is formed in the middle of the upright column 33, a connecting cable 36 is fixedly connected between the top end of the storage groove 35 and the top of one surface of the baffle 12 far away from the bucket 5, a baffle 37 is fixedly connected in the middle of one side of the storage groove 35 close to the bucket 5, the outer wall of the connecting cable 36 is in sliding fit with the inner wall of the groove of the baffle 37, a floating ring 38 is fixedly connected to the bottom ends of the upright columns 33, and a bolt 39 is arranged between the upright column 33 and the guide rail 32; during operation, it is fixed with stand 33 and guide rail 32 through bolt 39, make the subaerial that stand 33 supported, put into the inside of well-bucket 5 with the secondary burden, baffle 12 is under the effect of torsional spring, block the bottom of well-bucket 5, cable 10 hangs well-bucket 5, take off bolt 39 simultaneously, release stand 33, hang into the inside of smelting cavity 1 when well-bucket 5, the liquid level of fused alloy liquid is contacted to the floating ring 38, receive buoyancy, promote stand 33 and upwards slide along guide rail 32, make extension spring 34 tensile, drive connecting cable 36 and upwards slide along dog 37, pulling baffle 12 expandes, make the secondary burden fall into the inside of smelting furnace 2, thereby molten alloy liquid degree has been improved, the impurity content of high resistance electric heating alloy has been reduced.
When in work: proportioning according to the proportion, adding the proportioning into a smelting furnace 2, closing a smelting cavity 1 for vacuum-pumping smelting, and after the proportioning in the smelting furnace 2 is completely melted, secondarily proportioning according to the proportion;
the motor 9 drives the winch 8 to rotate, the inhaul cable 10 is retracted and wound on the winch 8, the inhaul cable 10 penetrates through the guide ring 28 to slide, the guide ring 28 drives the rotating rod 27 to rotate inside the sliding hole 26, the circular plate I30 is driven to rotate inside the circular ring groove 29, the magnets 31 on the two sides are separated, the square sliding ring 24 is driven to move along the guide groove 23, the inhaul cable 10 is enabled to be kept in a vertical state with the winch 8 all the time, the inhaul cable 10 is uniformly wound on the winch 8, and the probability that the inhaul cable 10 is wound and knotted is reduced; the bucket 5 is put into the barrel 4, when the bucket 5 approaches the top of the barrel 4, the top end of the push rod 16 contacts the top surface of the inner wall of the barrel 4, the push rod 16 slides into the chute 14, the push slide block 15 slides downwards along the chute 14 to compress the first spring 17, the support rods 18 on the two sides approach each other, the push block 19 is pushed to move towards the outer ring, the high-temperature-resistant shock absorption pad 21 contacts the inner wall of the barrel 4, the ball 20 rolls, the bucket 5 slides in the barrel 4, and the bucket 5 can be conveniently moved out of the barrel 4;
the feeding tower 3 rotates, the barrel 4 is connected with a feeding port 6 at the top of the smelting cavity 1, and the barrel 4 of the feeding tower 3 is vacuumized; the bucket 5 is lifted into the smelting cavity 1, so that the bottom of the bucket 5 is positioned at the top of the smelting furnace 2, the hanging arm 45 is rotated outwards under the action of a torsion spring, the hanging arm 45 is blocked by the top opening of the smelting cavity 1, the baffle seat 44 is driven to slide upwards, the sliding rod 41 is driven to slide upwards, the second spring 43 is compressed, the rope 47 is driven to slide upwards, the baffle 12 is pulled and unfolded, and secondary ingredients are put into the smelting furnace 2 for vacuum smelting; after the smelting is finished, the smelting furnace 2 is inclined under the pushing of a hydraulic cylinder, the molten alloy liquid is poured into a launder for pouring in a vacuum downward inclination mode, and the alloy liquid is cooled in a vacuum mode to obtain high-resistance electrothermal alloy; the automatic opening and closing of the baffle plate 12 at the bottom of the bucket 5 are realized, the probability that the bottom of the bucket 5 is contacted with molten metal is reduced, and the impurity in the resistance electrothermal alloy is reduced without using hemp ropes.
The front, the back, the left, the right, the upper and the lower are all based on figure 1 in the attached drawings of the specification, according to the standard of the observation angle of a person, the side of the device facing an observer is defined as the front, the left side of the observer is defined as the left, and the like.
In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate orientations or positional relationships based on those shown in the drawings, and are used merely for convenience in describing the present invention and for simplifying the description, but do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the scope of the present invention.
The foregoing illustrates and describes the principles, general features, and advantages of the present invention. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are described in the specification and illustrated only to illustrate the principle of the present invention, but that various changes and modifications may be made therein without departing from the spirit and scope of the present invention, which fall within the scope of the invention as claimed. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (7)
1. A preparation method of a high-resistance electrothermal alloy is characterized by comprising the following steps: the preparation method comprises the following steps:
s1: performing primary burdening according to a proportion, adding the primary burdening into a smelting furnace (2), and closing a smelting cavity (1) for vacuum-pumping smelting;
s2: after the ingredients in the smelting furnace (2) are completely melted, performing secondary ingredients according to a proportion, putting the secondary ingredients into a bucket (5), taking the bucket (5) into the barrel by a feeding tower (3), rotating the feeding tower (3), connecting the barrel (4) with a feeding port (6) at the top of a smelting cavity (1), and vacuumizing the barrel (4) of the feeding tower (3);
s3: the lifting bucket (5) is lifted into the smelting cavity (1), the hanging arm (45) is blocked by the top opening of the smelting cavity (1), the sliding rod (41) and the rope (47) are driven to slide upwards, the baffle (12) is unfolded, and secondary ingredients are put into the smelting furnace (2) for vacuum smelting;
s4: after the smelting is finished, the smelting furnace (2) is inclined under the pushing of a hydraulic cylinder, the molten alloy liquid is poured into a launder for pouring in a vacuum downward inclination mode, and the alloy liquid is cooled in the vacuum mode to obtain high-resistance electrothermal alloy;
the smelting furnace (2) is arranged inside the smelting cavity (1), the top of the smelting cavity (1) is communicated with a feed inlet (6), the inside of the feed inlet (6) is hinged with a sealing cover, one side of the smelting cavity (1) is provided with a feeding tower (3), two ends of a top cross beam of the feeding tower (3) are fixedly connected with a barrel (4), the top of the barrel (4) is provided with an inner cavity (7), a winch (8) is rotatably arranged inside the inner cavity (7), a motor (9) is fixedly connected with a top side wall of the barrel (4), a rotating shaft of the motor (9) is fixedly connected with the middle of the winch (8), an inner ring of the winch (8) is uniformly wound with a cable (10), one end of the cable (10) is fixedly connected with the winch (8), a through hole (11) is formed in the middle of the bottom surface of the inner cavity (7), the cable (10) runs through the through hole (11), a hanging barrel (5) is fixedly connected with the lower end of the hanging barrel (5), the outer wall of the hanging barrel (5) is slidably matched with the inner wall of the barrel (4), a plurality of sliding baffles (40) are hinged with an outer ring (40), the sliding rod (41) penetrates through the top end and the low end of the vertical tube (40), a second circular plate (42) is fixedly connected to the outer wall of the middle of the sliding rod (41), a second spring (43) is fixedly connected between the top surface of the second circular plate (42) and the inner top surface of the vertical tube (40), a blocking seat (44) is fixedly connected to the top end of the sliding rod (41), a hanging arm (45) is hinged to one side, far away from the bucket (5), of the blocking seat (44), a torsion spring is arranged on the outer ring of a rotating shaft of the hanging arm (45), a hanging lug (46) is fixedly connected to the low end of the sliding rod (41), a rope (47) is connected between the two ends of the hanging lug (46) and the baffle (12) close to the hanging arm, and a plurality of rollers are arranged at the top of the hanging arm (45);
a square ring seat (22) is fixedly connected to the bottom surface of the inner cavity (7), guide grooves (23) are formed in two sides of the inner wall of the square ring seat (22), the opening direction of each guide groove (23) is the same as the axial direction of the winch (8), a square sliding ring (24) is arranged on the inner ring of the square ring seat (22), a plurality of guide wheels (25) are rotatably mounted on two sides of the square sliding ring (24), the outer wall of each guide wheel (25) is in sliding fit with the inner wall of each guide groove (23), and the inhaul cable (10) penetrates through the inner ring of the square sliding ring (24);
the cable is characterized in that sliding holes (26) are formed in two sides of the middle of the square sliding ring (24), the opening direction of each sliding hole (26) is the same as the axial direction of the winch (8), rotating rods (27) are rotatably mounted inside the sliding holes (26), guide rings (28) are fixedly connected between the rotating rods (27) on two sides, and the cable (10) penetrates through the inner ring of each guide ring (28).
2. The method for preparing a high resistance electrothermal alloy according to claim 1, wherein: the ingredients consist of the following raw materials: c:0.002-0.008%, si:0.8-3%, mn:0.06-0.2%, al:0.3-0.8%, cr:16-25%, ti:0.1-0.3%, rare earth elements: 0.1-0.3%, B:0.02-0.05%, S is less than or equal to 0.0001%, and the balance is nickel and inevitable impurities.
3. The method for preparing a high resistance electrothermal alloy according to claim 1, wherein: the outer wall of well bucket (5) evenly encircles the rigid coupling and has a plurality of seats (13) of inlaying, inlay seat (13) and keep away from the one side of well bucket (5) and seted up spout (14), the inside slidable mounting of spout (14) has slider (15), the top surface rigid coupling of slider (15) has push rod (16), push rod (16) slide the roof that runs through spout (14), the rigid coupling has spring (17) between the bottom surface of slider (15) and the bottom surface of spout (14), the one side bottom of well bucket (5) is kept away from in slider (15) and spout (14) one side bottom of keeping away from well bucket (5) all articulates there is bracing piece (18), both sides bracing piece (18) are articulated to have ejector pad (19) in the one end that spout (14) were kept away from in bracing piece (18).
4. The method for preparing a high resistance electrothermal alloy according to claim 3, wherein: the push block (19) is far away from one side of the bucket (5) and is provided with a plurality of balls (20) in a rolling mode, the outer wall of each ball (20) is fixedly connected with a high-temperature-resistant shock pad (21), and a plurality of air cavities are formed in the high-temperature-resistant shock pad (21).
5. The method for preparing a high resistance electrothermal alloy according to claim 1, wherein: arc chamfers are arranged on two sides of the top of the through hole (11), and the directions of the arc chamfers are the same as the axial direction of the winch (8).
6. The method for preparing a high resistance electrothermal alloy according to claim 1, wherein: circular annular (29) have been seted up to the middle part outer lane of slide opening (26), the middle part outer lane rigid coupling of bull stick (27) has a plectane (30), the inner wall sliding fit of the outer wall of plectane (30) and circular annular (29), the top of circular annular (29) and the top surface of plectane (30) are all inlayed and are had magnet (31), two attract each other between magnet (31).
7. The method for preparing a high resistance electrothermal alloy according to claim 3, wherein: the outer wall of well-bucket (5) evenly encircles the rigid coupling and has a plurality of guide rails (32), guide rail (32) and inlay seat (13) alternate distribution, the outer lane slidable mounting of guide rail (32) has stand (33), the rigid coupling has extension spring (34) between the recess top surface of stand (33) and the top of guide rail (32), the middle part of stand (33) has been seted up and has been accomodate groove (35), the rigid coupling has connecting cable (36) between the top of accomodating groove (35) and baffle (12) keep away from the one side top of well-bucket (5), it has dog (37) to accomodate one side middle part rigid coupling that groove (35) is close to well-bucket (5), the outer wall of connecting cable (36) and the groove inner wall sliding fit of dog (37) are a plurality of the low side rigid coupling of stand (33) has loose collar (38), be provided with bolt (39) between stand (33) and guide rail (32).
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| CN107790658A (en) * | 2017-10-24 | 2018-03-13 | 江西理工大学 | One Albatra metal vacuum continuous smelting casting method |
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| CN113234956A (en) * | 2021-05-14 | 2021-08-10 | 中铝沈阳有色金属加工有限公司 | Vacuum casting method for large-tonnage chromium-zirconium-copper cast ingot |
| CN216592742U (en) * | 2021-12-30 | 2022-05-24 | 中天捷晟(天津)新材料科技有限公司 | Novel vacuum induction melting furnace |
| CN217210314U (en) * | 2022-04-19 | 2022-08-16 | 辽宁中色新材科技有限公司 | Secondary feeding device of vacuum melting furnace |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107790658A (en) * | 2017-10-24 | 2018-03-13 | 江西理工大学 | One Albatra metal vacuum continuous smelting casting method |
| CN108723375A (en) * | 2017-12-21 | 2018-11-02 | 湖南久泰冶金科技有限公司 | Can continuous charging vacuum melting furnace and the metal atomization powder manufacturing apparatus that is made from it |
| CN113234956A (en) * | 2021-05-14 | 2021-08-10 | 中铝沈阳有色金属加工有限公司 | Vacuum casting method for large-tonnage chromium-zirconium-copper cast ingot |
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Effective date of registration: 20240605 Address after: 225721 West side of Luogu Industrial Concentration Zone, Dainan Town, Xinghua City, Taizhou City, Jiangsu Province Patentee after: Jiangsu Changmiao Metal Products Co.,Ltd. Country or region after: China Address before: No. 2, Dongchen Industrial Concentration Zone, Dainan Town, Xinghua City, Taizhou City, Jiangsu Province, 225700 Patentee before: Taizhou Minghao precision alloy products Co.,Ltd. Country or region before: China |