Technology of slag fused casting train shaft

A technology for electroslag casting and train axles, which is applied to the production process of axles, can solve problems such as complex shapes, and achieve the effects of improving mechanical properties, metal densification, and improving service life.

Inactive Publication Date: 2007-01-03
潘明忠 +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the electroslag steel direct casting process also has shortcomings, and it cannot cast castings with particularly complex shapes and large ratios of height to cross section

Method used

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  • Technology of slag fused casting train shaft
  • Technology of slag fused casting train shaft
  • Technology of slag fused casting train shaft

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0017] Embodiment one: attached figure 2 As shown, a, b, and c in the figure are the three processes of electroslag casting. First insert the formed journal into the center ingot head of the bottom water tray 6 as the dummy head 10, use the slag resistance heat in the melting and casting process to fuse the journal and the shaft body, continue to melt and cast until the shaft body is cast, and use it as a self-consumable electrode 1. The journal end of the remaining head is melted, and the journal is inserted into the molten pool when the power is off, and its operation is like electroslag contact welding. This method is very economical, not only the prefabricated journal can be used, but also the old journal can be used, and the hollow shaft can be melt-cast by fixing the metal water-cooled mandrel. This method is completely consistent with the chemical composition, structure and base metal of the overall casting, and has high and uniform mechanical properties.

[0018] In...

Embodiment 2

[0020] Embodiment 2: In order to obtain the integral casting train axle, adopt the crystallizer lifting method to melt and cast the integral axle, as attached image 3 The processes of e, f, and g shown. This special equipment also has three short crystallizers 12 and each subsidiary bottom water tray 6, three dollies carrying crystallizers except sending electrode dolly, and each dolly is used to move corresponding short crystallizer 12. The inner cavity of each short crystallizer is designed as the corresponding part of the axle shaft, and the shape and size are the same as the axle shaft. The first short crystallizer 12 in the lower part is ignited to start melting and casting. The crystallizer is lifted during the melting and casting process to form the axle journal 13 and then replaced The second short crystallizer 12 in the middle melts and casts the shaft body 14, adds dried solid slag, and after the shaft body 14 is melted and casts, replaces the upper third short mold...

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Abstract

An electroslag casting technology for manufacturing the wheel axle of high-speed train includes using the water bottom tray of crystallizer as electrode, using the axle billet as consummable electrode, choosing slag system and filling ratio, and electroslag casting. Its advantages are high mechanical performance and long endurance life.

Description

technical field [0001] The invention relates to a process for electroslag melting and casting of train axles, in particular to a production process suitable for high-speed train axles. Background technique [0002] At present, all countries in the world adopt the current metallurgical (revolution, electric furnace steelmaking and mold injection) process to produce train axles. In the West and Japan, iron and steel enterprises directly produce train axles; similar iron and steel enterprises in Russia and my country only produce axle blanks. All countries in the world use the current metallurgical production process to inject molten steel into large steel ingots of about 10T, and process them into axles through billeting (for axle manufacturers in my country)—forging and pressing—not only the forging process is complicated, the forging ratio is large, and it is qualified. The rate generally can only reach 68%. Since molten steel enters the ingot mold through refractory bricks...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B22D23/10
Inventor 潘明忠谢世兴潘东
Owner 潘明忠
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