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Continuous casting-cross wedge rolling moulding method for stud bar-free double-metal layer composite solid shafts

A double-metal layer, no material head technology, applied in the direction of metal rolling, can solve the problems that are not suitable for large-scale industrialization and automatic production, the quality of interface bonding is difficult to control stably, and cannot meet the requirements of energy saving and emission reduction, etc., to achieve large-scale Industrialized production, improved material utilization, and easy operation

Inactive Publication Date: 2017-04-26
NINGBO UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the process of this method is cumbersome, and it is not suitable for large-scale industrialization and automatic production. In addition, during the assembly process of the hollow sleeve and the base bar, the interface bonding quality is difficult to control stably due to grinding and cleaning, which restricts the lamination shaft. use
In addition, before cross wedge rolling, the bar needs to be heated twice, which consumes a lot of power and cannot meet the needs of energy saving and emission reduction

Method used

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  • Continuous casting-cross wedge rolling moulding method for stud bar-free double-metal layer composite solid shafts
  • Continuous casting-cross wedge rolling moulding method for stud bar-free double-metal layer composite solid shafts
  • Continuous casting-cross wedge rolling moulding method for stud bar-free double-metal layer composite solid shafts

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] Embodiment 1: A continuous casting-cross-wedge rolling forming method for a double-metal layer composite solid shaft without a head. The continuous casting device used in this method includes a base tundish 1, a cladding tundish 2, and a cooling 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 in the cladding pouring pipe 21 The cooling crystallizer 3 is coaxially fixed on the coating pouring pipe 21, and the electromagnetic stirrer 4 is coaxially installed on the cooling crystallizer 3. The specific processing steps of the method are:

[0023] (1) Add the cladding molten steel 5 made of 42CrMo into the cladding tundish 2, the electromagnetic stirrer 4 stirs the cladding molten steel 5, and at the same time, the cooling crystallizer 3 cools the ...

Embodiment 2

[0030] Embodiment 2: A continuous casting-cross-wedge rolling forming method for a double-metal layer composite solid shaft without a head, the continuous casting device used in this method includes a base tundish 1, a cladding tundish 2, and a cooling 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 in the cladding pouring pipe 21 The cooling crystallizer 3 is coaxially fixed on the coating pouring pipe 21, and the electromagnetic stirrer 4 is coaxially installed on the cooling crystallizer 3. The specific processing steps of the method are:

[0031] (1) Add the cladding molten steel 5 made of 42CrMo into the cladding tundish 2, the electromagnetic stirrer 4 stirs the cladding molten steel 5, and at the same time, the cooling crystallizer 3 cools the ...

Embodiment 3

[0038] Embodiment 3: A continuous casting-cross-wedge rolling forming method of double-metal layer composite solid shaft without head, the continuous casting device used in this method includes a base tundish 1, a cladding tundish 2, and a cooling 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 in the cladding pouring pipe 21 The cooling crystallizer 3 is coaxially fixed on the coating pouring pipe 21, and the electromagnetic stirrer 4 is coaxially installed on the cooling crystallizer 3. The specific processing steps of the method are:

[0039] (1) Add the cladding molten steel 5 whose material is 12Cr18Ni9Ti into the cladding tundish 2 , stir the cladding molten steel 5 with the electromagnetic stirrer 4 , and at the same time cool the cladding molt...

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Abstract

The invention discloses a continuous casting-cross wedge rolling moulding method for stud bar-free double-metal layer composite solid shafts. The continuous casting-cross wedge rolling moulding method is characterized in that coating molten steel is added into a coating tundish; the coating molten steel is solidified into a coating metal pipe between a coating pouring pipe and a basic layer pouring pipe; basic layer molten steel is added into a basic layer tundish; the basic layer molten steel is combined with a part, which is not solidified completely, of the inner part of the coating metal pipe, and a double-layer composite rod is formed through solidification by cooling of a cooling crystallizer; the double-layer composite rod is subjected to secondary cooling; annular grooves are compressed in the outer surface of the double-layer composite rod; the double-layer composite rod is radially cut off along the bottommost parts of the annular grooves with a cutting machine, so that two ends of each double-layer composite rod are both truncated cone-shaped; and finally the double-layer composite rods are immediately arranged on a cross wedge rolling machine for rolling, so that the stud bar-free double-metal layer composite solid shafts are obtained. The continuous casting-cross wedge rolling moulding method has the advantages that a production procedure of laminating shafts is simplified; large-scale industrial production can be realized; secondary heating is avoided; and aims of energy saving and consumption reducing are reached.

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 solid shaft without material head. Background technique [0002] With the continuous development of industrial technologies such as energy and automobiles, the demand for shafts is increasing. However, many shafts are often used in harsh environments with high temperature and high pressure, and are prone to failure problems such as shaft wear or fracture. And the safety of industrial producers brings hidden dangers. In the process of continuous development of material technology, laminated materials can not only play a synergistic effect between the properties of their respective raw materials, but also reduce costs and meet the requirements of performance by selecting the size ratio of laminated materials. At present, in the actual production of laminated shafts (that is, double-layer or mult...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B21B1/46
CPCB21B1/46
Inventor 彭文飞安子民闵海涛朱健殷安民束学道陈楠
Owner NINGBO UNIV