Continuous casting-cross-wedge rolling forming method for double-metal-layer composite hollow shaft without stub bars

A double-metal layer and hollow shaft technology, which is applied in metal rolling, metal rolling, metal processing equipment, etc., can solve the problems of unfavorable automatic production and low work efficiency, and achieve large-scale industrial production, easy operation, and crystal grain refinement effect

Inactive Publication Date: 2017-05-31
NINGBO UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the inner and outer hollow shaft blanks used in this method are finished products processed through multiple passes, and their work efficiency is low, which is not conducive to automatic production.

Method used

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  • Continuous casting-cross-wedge rolling forming method for double-metal-layer composite hollow shaft without stub bars
  • Continuous casting-cross-wedge rolling forming method for double-metal-layer composite hollow shaft without stub bars
  • Continuous casting-cross-wedge rolling forming method for double-metal-layer composite hollow shaft without stub bars

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Experimental program
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Effect test

Embodiment 1

[0024] Embodiment 1: A continuous casting-cross-wedge rolling forming method of double-metal layer composite hollow shaft without head, the continuous casting device used in this method includes base tundish 1, cladding tundish 2, spacer rod 9, Cooling the crystallizer 3 and the electromagnetic stirrer 4, the lower end of the base tundish 1 is fixedly provided with a base pouring pipe 11, the lower end of the cladding tundish 2 is fixedly provided with a cladding pouring pipe 21, and the base pouring pipe 11 is coaxially arranged on the cladding In the pouring tube 21, the spacer rod 9 is coaxially arranged in the base pouring tube 11 and passes through the base pouring tube 11 downwards, the cooling crystallizer 3 is coaxially fixed on the coating pouring tube 21, and the electromagnetic stirrer 4 is coaxially installed on the pouring tube 21. On cooling crystallizer 3, the concrete processing step of this method is:

[0025] (1) Add the cladding molten steel 5 made of Q235 i...

Embodiment 2

[0032] Embodiment 2: A continuous casting-cross-wedge rolling forming method of double-metal layer composite hollow shaft without tip, the continuous casting device used in this method includes base tundish 1, cladding tundish 2, spacer rod 9, Cooling the crystallizer 3 and the electromagnetic stirrer 4, the lower end of the base tundish 1 is fixedly provided with a base pouring pipe 11, the lower end of the cladding tundish 2 is fixedly provided with a cladding pouring pipe 21, and the base pouring pipe 11 is coaxially arranged on the cladding In the pouring tube 21, the spacer rod 9 is coaxially arranged in the base pouring tube 11 and passes through the base pouring tube 11 downwards, the cooling crystallizer 3 is coaxially fixed on the coating pouring tube 21, and the electromagnetic stirrer 4 is coaxially installed on the pouring tube 21. On cooling crystallizer 3, the concrete processing step of this method is:

[0033] (1) Add the cladding molten steel 5 made of 45# ste...

Embodiment 3

[0040] Embodiment 3: A continuous casting-cross-wedge rolling forming method of double-metal layer composite hollow shaft without head, the continuous casting device used in this method includes base tundish 1, cladding tundish 2, spacer rod 9, Cooling the crystallizer 3 and the electromagnetic stirrer 4, the lower end of the base tundish 1 is fixedly provided with a base pouring pipe 11, the lower end of the cladding tundish 2 is fixedly provided with a cladding pouring pipe 21, and the base pouring pipe 11 is coaxially arranged on the cladding In the pouring tube 21, the spacer rod 9 is coaxially arranged in the base pouring tube 11 and passes through the base pouring tube 11 downwards, the cooling crystallizer 3 is coaxially fixed on the coating pouring tube 21, and the electromagnetic stirrer 4 is coaxially installed on the pouring tube 21. On cooling crystallizer 3, the concrete processing step of this method is:

[0041] (1) Add the cladding molten steel 5 of the materia...

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Abstract

The invention discloses a continuous casting-cross-wedge rolling forming method for a double-metal-layer composite hollow shaft without stub bars. The forming method is characterized in that coating-layer molten steel is added into a coating-layer pouring basket and solidified into a coating-layer metal pipe between a coating-layer casting pipe and a base-layer casting pipe. Base-layer molten steel is injected into the coating-layer metal pipe along an annular interspace between the base-layer casting pipe and a spacer rod and is solidified into a double-layer composite hollow bar material through cooling of a cooling crystallizer. The double-layer composite hollow bar material is subjected to secondary cooling, annular grooves are formed in the outer surface of the double-layer composite hollow bar material in an extruded mode, and a cutting machine cuts off the double-layer composite hollow bar material along the bottommost portions of the annular grooves in the radial direction. Finally, the double-layer composite hollow bar material is immediately placed to a cross-wedge rolling machine for rolling, and the double-metal-layer composite hollow shaft without the stub bars is obtained. The continuous casting-cross-wedge rolling forming method for the double-metal-layer composite hollow shaft without the stub bars has the advantages that the working procedure of the double-metal-layer composite hollow shaft is simplified, large-scale industrial production can be achieved, secondary heating of cross-wedge rolling is avoided, and the purposes of energy saving and consumption reducing are achieved.

Description

technical field [0001] The invention relates to the processing of shaft parts, in particular to a continuous casting-cross-wedge rolling forming method of a dual-metal layer composite hollow shaft without a head. Background technique [0002] Bimetallic composite shafts have good comprehensive properties and are widely used in petroleum, chemical, shipbuilding, energy, machinery manufacturing and other fields, with huge market potential. However, as a solid shaft that bears bending moment and torque load, its core material does not fully play its due role in service, and with the demand for saving society and reducing energy consumption, shaft parts are required Under the condition of satisfying strength and rigidity, the mass of itself should be reduced as much as possible. [0003] At present, many double-layer composite hollow shafts are processed by double-tube brazing. The material is melted and the inner and outer hollow shaft blanks are compositely brazed together t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B21B1/46B22D11/01B21B15/00
CPCB21B1/466B21B15/0007B21B2015/0078B22D11/006B22D11/01
Inventor 彭文飞谢平平朱健殷安民束学道
Owner NINGBO UNIV
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