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CN-121988712-A - Horizontal centrifugal casting equipment and process method for multi-magnetic-pole electromagnetic stirring roller

CN121988712ACN 121988712 ACN121988712 ACN 121988712ACN-121988712-A

Abstract

The invention relates to the technical field of centrifugal casting equipment, in particular to multi-magnetic-pole electromagnetic stirring roller horizontal centrifugal casting equipment and a process method, comprising a centrifugal casting closed box, electromagnet assemblies arranged on two sides of the centrifugal casting closed box, a horizontal centrifugal casting main machine, a longitudinal screw rod sliding table module, an axial moving assembly and a magnetic stirring device, wherein the horizontal centrifugal casting main machine is arranged at the top of the centrifugal casting closed box, the longitudinal screw rod sliding table module is arranged on the surfaces of two sides of the centrifugal casting closed box and is used for driving the electromagnet assemblies to move along a Y axis, the axial moving assembly is connected with the longitudinal screw rod sliding table module and is used for driving the electromagnet assemblies to move along an X axis.

Inventors

  • LONG JIANG
  • ZHANG FUHAI
  • LI CHANG
  • DU XIAOTONG
  • WANG WEI

Assignees

  • 鞍钢轧辊有限公司

Dates

Publication Date
20260508
Application Date
20260227

Claims (9)

  1. 1. The utility model provides a horizontal centrifugal casting equipment of multipole electromagnetic stirring roll which characterized in that includes centrifugal casting closed box (19) and sets up the electro-magnet subassembly in centrifugal casting closed box (19) both sides, still includes: a horizontal centrifugal casting host machine (37) which is arranged at the top of the centrifugal casting closed box (19); the longitudinal screw rod sliding table modules (43) are arranged on the surfaces of the two sides of the centrifugal casting closed box (19) and used for driving the electromagnet assemblies to move along the Y axis; The axial moving assembly is connected with the longitudinal screw rod sliding table module (43) and used for driving the electromagnet assembly to move along the X axis, and comprises an axial screw rod sliding table module a (46), an axial screw rod sliding table module b (40), an axial screw rod sliding table module c (48) and an axial screw rod sliding table module d (53); the transverse moving assembly is arranged on the surface of the axial moving module and used for driving the electromagnet assembly to move along the Z axis, and comprises a transverse screw rod main body sliding table module a (42) and a transverse screw rod main body sliding table module b (51); and the electromagnetic module is arranged on the surface of the transverse moving assembly.
  2. 2. A multi-pole electromagnetic stirring roller horizontal centrifugal casting apparatus according to claim 1, wherein said horizontal centrifugal casting main machine (37) comprises: The host machine base (47) is arranged at the top of the centrifugal casting closed box (19), and the horizontal centrifugal casting host machine (37) is fixed with the host machine base (47); a horizontal centrifugal casting bearing (38) fixed with the output shaft of the horizontal centrifugal casting host (37); and the riding wheel (39) is arranged at one end of the horizontal centrifugal casting bearing (38) and is arranged in the centrifugal casting closed box (19).
  3. 3. The multi-pole electromagnetic stirring roller horizontal centrifugal casting apparatus according to claim 2, wherein the longitudinal screw rod slipway module (43) comprises: The longitudinal moving rails are welded on the surfaces of two sides of the centrifugal casting closed box (19); A longitudinal screw motor a (13) and a longitudinal screw motor b (20) are respectively arranged at the top of the two side longitudinal moving tracks; The bottom of the longitudinal screw rod main body is rotationally connected with the bottom of the inner wall of the longitudinal moving track, the top of the longitudinal screw rod main body penetrates through the longitudinal moving track in a rotating way, and the tops of the longitudinal screw rod main bodies on two sides are respectively fixed with output shafts of a longitudinal screw rod motor a (13) and a longitudinal screw rod motor b (20); The surface thread sleeve of the longitudinal screw body is provided with a longitudinal moving sliding table, the longitudinal screw supporting plate a (55) and the longitudinal screw supporting plate b (56) are respectively welded on the surfaces of the longitudinal moving sliding tables on two sides, the two ends of the longitudinal screw supporting plate a (55) and the longitudinal screw supporting plate b (56) are respectively provided with an axial screw fastener (12), the axial screw sliding table module a (46) and the axial screw sliding table module b (40) are respectively arranged at the two ends of the longitudinal screw supporting plate b (56) through the axial screw fastener (12), and the axial screw sliding table module c (48) and the axial screw sliding table module d (53) are respectively arranged at the two ends of the longitudinal screw supporting plate a (55) through the axial screw fastener (12).
  4. 4. A multi-pole electromagnetic stirring roller horizontal centrifugal casting apparatus according to claim 3, wherein the axial screw slide module a (46) and the axial screw slide module b (40) comprise: The axial moving track a (6) is arranged at two ends of the longitudinal screw supporting plate b (56) through an axial screw fastener (12), an axial screw main body a (4) is penetrated through the surface of the axial moving track a (6) in a rotating way, and one end of the axial screw main body a (4) is connected with the inner wall of the axial moving track a (6) in a rotating way; the axial sliding table limiting piece a (8) and the axial sealing piece a (9) are arranged at one end of the axial moving track a (6); An axial screw motor a (1) mounted on the surface of the axial moving rail a (6), wherein the other end of the axial screw main body a (4) is fixed with an output shaft of the axial screw motor a (1); An axial screw shaft coupling a (2) mounted on a surface of the axial movement rail a (6) and for supporting an axial screw body a (4), the axial screw body a (4) penetrating the axial screw shaft coupling a (2); An axial screw sliding table a (3) which is arranged on the surface of the axial screw main body a (4); An axial moving sliding table a (7) which is arranged on the surface of the axial screw rod main body a (4) and moves along an axial moving track a (6), wherein an axial flange nut a (5) is arranged on the surface of the axial moving sliding table a (7); And the two ends of the axial lead screw supporting plate b (57) are respectively welded with the surfaces of the two sides of the axial moving sliding table a (7).
  5. 5. The multi-pole electromagnetic stirring roller horizontal centrifugal casting apparatus according to claim 4, wherein the axial screw slide module c (48) and the axial screw slide module d (53) include: An axial moving rail b (26) which is arranged at two ends of the longitudinal screw supporting plate a (55) through an axial screw fastener (12), wherein an axial screw main body d (61) penetrates through the surface of the axial moving rail b (26) in a rotating way; An axial sliding table limiting piece d (64) and an axial sealing piece d (65) are arranged at one end of the axial moving track b (26); An axial screw motor b (21) mounted on the surface of the axial moving rail b (26), the other end of the axial screw body d (61) being fixed to the output shaft of the axial screw motor b (21); An axial screw shaft coupling b (22) mounted on a surface of the axial moving rail b (26) and for supporting an axial screw body d (61), the axial screw body d (61) penetrating the axial screw shaft coupling b (22); An axial screw sliding table b (23) mounted on the surface of the axial screw main body d (61); An axial moving sliding table d (63) which is arranged on the surface of the axial moving track b (26) and moves along the axial moving track b (26), wherein a guide piece (66) and a protruding structure (62) which is in threaded connection with the axial screw rod main body d (61) are arranged on the surface of the axial moving sliding table d (63), and a locking bolt (67) is arranged on the surface of the protruding structure (62); and the two ends of the axial lead screw supporting plate a (54) are respectively welded with the surfaces of the axial moving sliding tables d (63) on the two sides.
  6. 6. The multi-pole electromagnetic stirring roller horizontal centrifugal casting apparatus according to claim 5, wherein the transverse screw body slipway module a (42) and the transverse screw body slipway module b (51) comprise: A transverse supporting plate a (31) welded on the surfaces of the axial screw supporting plate a (54) and the axial screw supporting plate b (57); a transverse moving track a (33) mounted on the surface of the transverse supporting plate a (31); A transverse screw rod main body a (32), one end of which penetrates through the transverse moving track a (33) in a rotating way, and the other end of which is connected with the inner wall of the transverse moving track a (33) in a rotating way; A lateral screw shaft coupling a (30) mounted on a surface of the axial lateral movement rail a (33) and for supporting a lateral screw body a (32), the lateral screw body a (32) penetrating the lateral screw shaft coupling a (30); A transverse screw motor a (29) which is arranged on the surface of the transverse supporting plate a (31), and one end of the transverse screw main body a (32) is fixed with an output shaft of the transverse screw motor a (29); a transverse sliding table limiting piece a (35) and a transverse sealing piece (36) are arranged at one end of the transverse moving track a (33); a transverse moving sliding table a (34) which is arranged on the surface of the transverse screw rod main body a (32) and moves along a transverse moving track a (33).
  7. 7. The multi-pole electromagnetic stirring roller horizontal centrifugal casting apparatus as claimed in claim 6, wherein the electromagnetic module comprises: The transverse brackets a (18) are welded on the surfaces of the two sides of the transverse moving sliding table a (34), the surfaces of the two sides of the transverse brackets a (18) are respectively welded with the connecting piece a (44) and the connecting piece b (50), the two ends of the connecting piece a (44) are respectively welded with the electromagnet supporting boxes a (11), and the two ends of the connecting piece b (50) are respectively welded with the electromagnet supporting boxes b (17); The electromagnet a (45) and the electromagnet b (41) are respectively arranged in the electromagnet supporting boxes a (11) at two sides; The electromagnet c (52) and the electromagnet d (49) are respectively arranged in the electromagnet bracket boxes b (17) at two sides.
  8. 8. The multi-pole electromagnetic stirring roller horizontal centrifugal casting apparatus according to claim 7, wherein the electromagnet a (45), the electromagnet b (41), the electromagnet c (52), and the electromagnet d (49) each include: The electromagnetic iron cores (59) are four in number, two electromagnetic iron cores (59) are arranged in the electromagnet supporting box a (11), the other two electromagnetic iron cores (59) are arranged in the electromagnet supporting box b (17), the electromagnetic iron cores (59) positioned in the electromagnet supporting box a (11) on one side are respectively provided with an electromagnet insulating layer b (60) and an electromagnet insulating layer a (10) on two ends, the electromagnetic iron cores (59) positioned in the electromagnet supporting box a (11) on the other side are respectively provided with an electromagnet insulating layer c (14) on two ends, the electromagnetic iron cores (59) positioned in the electromagnet supporting box b (17) on one side are respectively provided with an electromagnet insulating layer e (16) on two ends, and the electromagnetic iron cores (59) positioned in the electromagnet supporting box b (17) on the other side are respectively provided with an electromagnet insulating layer d (15) on two ends; and an electromagnetic coil (58) provided on the surface of the electromagnetic core (59).
  9. 9. A multi-magnetic-pole electromagnetic stirring roller horizontal centrifugal casting process method, which is characterized in that the process method is applied to the multi-magnetic-pole electromagnetic stirring roller horizontal centrifugal casting equipment as claimed in claim 1, and comprises the following steps: S1, presetting and starting, namely presetting the rotating speeds of output shafts of an axial screw motor a (1), a longitudinal screw motor a (13), a longitudinal screw motor b (20), an axial screw motor b (21), a transverse screw motor a (29) and a horizontal centrifugal casting host machine (37) and current parameters of an electromagnet b (41), an electromagnet a (45), an electromagnet c (52) and an electromagnet d (49) through a control system; S2, stirring in a mold filling stage, namely starting a horizontal centrifugal casting host machine (37) to rotate and pouring melt, controlling an electromagnet b (41), an electromagnet a (45), an electromagnet c (52) and an electromagnet d (49) to supply initial current, and driving an electromagnetic module to move along an X axis by an axial moving component to assist in uniform melt; s3, strengthening stirring in the middle of solidification, namely lifting current to strengthen a magnetic field, and linking a longitudinal screw rod sliding table module (43) and a transverse moving assembly to enable an electromagnetic module to move along a Y axis and a Z axis, and intensively flushing and crushing dendrites on the solidification front; S4, controlling deflection in the later stage of solidification, namely reducing current, maintaining a low-intensity magnetic field to interfere with residual melt, and inhibiting segregation until complete solidification.

Description

Horizontal centrifugal casting equipment and process method for multi-magnetic-pole electromagnetic stirring roller Technical Field The invention relates to the technical field of centrifugal casting equipment, in particular to horizontal centrifugal casting equipment and a process method for a multi-magnetic-pole electromagnetic stirring roller. Background The roller is a key core component of a steel rolling production line, and the service performance of the roller directly influences the dimensional accuracy, the surface quality, the rolling efficiency and the yield of steel. In recent years, with the continuous increase of global steel yield and high-end steel demands, products such as hot rolling, cold rolling and medium plates are developed towards high speed, high load and long service life, and higher requirements are put on roller wear resistance, spalling resistance, hot cracking resistance and structural uniformity. At the same time, the plate and strip materials have higher strength, diversified specifications and more stringent requirements on surface defects. The casting quality (structure refinement, composition segregation, inclusion and pore defects) of the roller becomes a key factor for limiting the service life and performance stability of the roller. Currently, roll manufacturing processes mainly include forging, centrifugal casting, composite manufacturing, and the like. The horizontal centrifugal casting can realize melt densification under the action of rotary centrifugal force, improve the quality of a working layer and realize gradient composite structure and performance matching of the outer layer and the core part of the roller. The technology is widely used for preparing products such as high-chromium cast iron rollers, semisteel rollers, composite rollers and the like. However, the horizontal centrifugal casting process still has the following drawbacks and disadvantages: (1) The solidification structure is coarse and dendrite is obvious, and although centrifugal force can promote the densification of the structure, coarse columnar crystals, dendrite segregation, netlike eutectic carbide and other structures are easy to form in the manufacturing of the high alloy roller. (3) Component segregation and tissue non-uniformity, namely centrifugal force has important influence on the distribution of phases with different densities, and solute redistribution in the superposition solidification process is easy to cause radial/axial component fluctuation, so that hardness and wear resistance are discrete. (3) Defect sensitivity, namely under the high-temperature long flow, the melt is sensitive to gas and impurities, and if the flowing and feeding conditions are not ideal, defects such as shrinkage cavity, loosening, impurity enrichment zone and the like can occur. (4) The process window is narrow, the suitability is insufficient, the requirements of different material systems (high chromium, high nickel, high vanadium and the like), different roll shape sizes and wall thicknesses on melt flow, solidification speed and thermal field distribution are obviously different, and a single fixing process is difficult to consider. In order to improve the cast structure and uniformity, means such as magnetic field auxiliary casting, electromagnetic stirring and the like are gradually introduced into the industry. The magnetic field acts on the melt to generate electromagnetic force, so as to change the flow field and the temperature field of the melt, promote the fracture and nucleation of dendrites, inhibit the preferential growth of dendrites and improve the solute diffusion condition, thereby being beneficial to realizing grain refinement, dendrite spacing reduction, segregation alleviation and tissue homogenization. In the roller centrifugal casting process, if effective electromagnetic stirring can be overlapped on the basis of centrifugal force densification, the convective heat transfer and mass transfer capacity of a melt can be further improved, the stability of the solidification front is improved, and the method has important significance for refining the roller working layer structure and improving the performance. Disclosure of Invention The invention aims to provide a multi-magnetic-pole electromagnetic stirring roller horizontal centrifugal casting device, aiming at the roller centrifugal casting process, the influence of the multi-magnetic-pole electromagnetic stirring effect is exerted, the flexible adjustment of the magnetic pole space in the axial direction, the transverse direction and the longitudinal direction is realized, the dynamic adjustable magnetic stirring effect is exerted on the roller centrifugal casting process, the roller centrifugal casting quality is improved, the roller surface layer strengthening effect and the economic benefit are improved, and the requirement of the current market on high-quality rollers is met. In order to achieve the purpose, the invent