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A Final Pressure Forging Process for Rail Vehicle Bogie Axle Box

A bogie axle and rail vehicle technology, applied in the field of aluminum alloys, can solve the problems of poor tensile strength, yield strength, elongation, and can not meet the mechanical performance requirements of rail vehicle bogie axle boxes, and meet the mechanical performance requirements. Effect

Active Publication Date: 2016-06-29
SOUTHWEST ALUMINUM GRP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In the prior art, the metal materials used for rail vehicle bogie axle boxes have poor tensile strength, yield strength, and elongation, and cannot meet the mechanical performance requirements of rail vehicle bogie axle boxes during high-speed operation.

Method used

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  • A Final Pressure Forging Process for Rail Vehicle Bogie Axle Box
  • A Final Pressure Forging Process for Rail Vehicle Bogie Axle Box
  • A Final Pressure Forging Process for Rail Vehicle Bogie Axle Box

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027]

[0028] Table 1

[0029] The aluminum alloy raw material formed according to the metal mass percentage in Table 1 is then processed according to the following process:

[0030] (1) Melting the aluminum alloy raw material;

[0031] (2) ingot-casting the molten aluminum alloy raw material to form a cylindrical ingot;

[0032] (3) Heating the cylindrical ingot to 420°C and holding it for 240 minutes, and heating the forging die to 350°C for 6 hours;

[0033] (4) Forging the cylindrical ingot through the forging die into a cuboid-shaped blank, the forging temperature is 420° C., and the final forging temperature is 350° C.;

[0034] (5) Heating the rectangular parallelepiped blank to 420°C and keeping it warm for 210 minutes, and heating the pre-press forging die to 350°C for 8 hours;

[0035] (6) Carrying out pre-press forging the cuboid-shaped blank through a pre-press forging die, the starting forging temperature of pre-press forging is 420°C, and the final forgin...

Embodiment 2

[0040]

[0041] Table 2

[0042] The aluminum alloy raw material formed according to the metal mass percentage in Table 2 is then processed according to the following process: (1) the aluminum alloy raw material is melted;

[0043] (2) ingot-casting the molten aluminum alloy raw material to form a cylindrical ingot;

[0044] (3) Heating the cylindrical billet to 440°C and holding it for 270 minutes, and heating the forging die to 450°C for 8 hours;

[0045] (4) Forging the cylindrical ingot through the forging die into a cuboid-shaped blank, the forging temperature is 440° C., and the final forging temperature is 380° C.;

[0046] (5) heating the cuboid-shaped blank to 440°C, and keeping it warm for 230 minutes, and heating the pre-press forging die to 450°C for 9 hours;

[0047] (6) Carrying out pre-press forging the cuboid-shaped blank through a pre-press forging die, the initial forging temperature of pre-press forging is 440°C, and the final forging temperature is equ...

Embodiment 3

[0052]

[0053] table 3

[0054] The aluminum alloy raw material formed according to the metal mass percentage in Table 3 is then processed according to the following process: (1) the aluminum alloy raw material is melted;

[0055] (2) ingot-casting the molten aluminum alloy raw material to form a cylindrical ingot;

[0056](3) Heating the cylindrical ingot to 430°C and holding it for 250 minutes, and heating the forging die to 400°C for 7 hours;

[0057] (4) Forging the cylindrical ingot into a cuboid blank through the forging die, the forging temperature is 430°C, and the final forging temperature is 360°C;

[0058] (5) heating the cuboid-shaped blank to 430°C and keeping it warm for 220 minutes, and heating the pre-press forging die to 400°C for 9 hours;

[0059] (6) Carrying out pre-press forging the cuboid-shaped blank through a pre-press forging die, the initial forging temperature of pre-press forging is 430°C, and the final forging temperature is equal to 390°C to...

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Abstract

The invention provides a final pressure forging process of a truck journal box for a rail vehicle, which comprises the following steps: heating a preliminary pressure forging box blank to 420-440 DEG C, and keeping the temperature for 210 minutes or above; heating a preliminary pressure forging mold to 350-450 DEG C for 8 hours or above; and performing preliminary pressure forging on the cuboid ingot blank through the preliminary pressure forging mold, thus forming the journal box, wherein the initial forging temperature is 420-440 DEG C, and the final forging temperature is 380 DEG C or above. According to the final pressure forging process of a truck journal box for a rail vehicle, the truck journal box produced from an aluminum alloy obtained through the method has high tensile strength, yield strength and elongation percentage, and can meet the requirements of high-iron truck journal boxes for mechanical property.

Description

technical field [0001] The invention relates to the technical field of aluminum alloys, in particular to a final pressure forging process for a rail vehicle bogie axle box body. Background technique [0002] With the continuous development of science and technology, high-speed rail has been widely used in various cities. The continuous speed increase of rail vehicles has put forward higher and higher requirements for the safe operation of the vehicles. Among them, the quality of the axle box of the rail vehicle bogie plays a decisive role in the safe operation of the vehicles. [0003] In the prior art, the metal materials used for rail vehicle bogie axle boxes have poor tensile strength, yield strength, and elongation, and cannot meet the mechanical performance requirements of rail vehicle bogie axle boxes during high-speed operation. [0004] Therefore, how to meet the requirements of tensile strength, yield strength and elongation of the high-speed railway bogie axle box...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C22F1/04B21J5/06
Inventor 邓小三饶茂
Owner SOUTHWEST ALUMINUM GRP