A railway vehicle chassis floor welding process

A rail vehicle and welding process technology, applied in welding equipment, welding equipment, auxiliary welding equipment, etc., can solve problems such as lack of fusion, cracks, and welding speed effects, and achieve heat dispersion, reduce welding deformation, and reduce welding deformation. Effect

Active Publication Date: 2017-05-03
丛林铝业科技(山东)有限责任公司 +1
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  • Application Information

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Problems solved by technology

Aluminum alloys are prone to welding defects such as pores, unfused and cracks during the weldi

Method used

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  • A railway vehicle chassis floor welding process
  • A railway vehicle chassis floor welding process
  • A railway vehicle chassis floor welding process

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Embodiment Construction

[0034] The principles and features of the present invention are described below in conjunction with the accompanying drawings, and the examples given are only used to explain the present invention, and are not intended to limit the scope of the present invention.

[0035] A rail vehicle underframe floor welding process, the underframe floor includes one side beam 1, two side beams 3, and sandwiched between the one side beam 1 and the two side beams Floor 2, such as Figure 1-Figure 2 shown, including the following steps:

[0036] Step 1: Clean the various profiles of the chassis floor

[0037] Lift the first and second side beams 1, 3 and the middle floor 2 profiles in sequence, and use metal cleaning agent to scrub the parts to be welded and the joints of the profiles;

[0038] Step 2: Locate the various profiles of the chassis floor

[0039] First, use the pressing device 12 to fix the two-position side beam 3 on the positioning plate 13; secondly, adjust the end faces of...

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Abstract

The invention relates to a railway vehicle chassis floor welding process which comprises the steps of: firstly, cleaning section bars for a chassis floor; secondly, locating the section bars for the chassis floor: successively locating a second side beam, the floor section bars and a first side beam, and adjusting the gaps between the section bars to make the gaps uniform; thirdly, installing a run-on plate and a run-off plate; fourthly, performing tack welding, wherein the length of tack welds is kept to be 80-100mm, and in the length direction, the spacing distance between adjacent tack welds is 1000-2500mm; fifthly, performing reserve automatic welding: setting the welding parameters of an IGM automatic welding robot reasonably, and using double guns to perform welding crosswise according to the order of firstly welding the first weld and the fourth weld, secondly welding the second weld and the fifth weld and thirdly welding the third weld and the sixth weld; sixthly, performing overall turning: turning the chassis floor wholly; seventhly, performing frontal welding on the chassis floor: completing frontal automatic welding according to the fifth step; eighthly, performing overall adjustment on the chassis floor.

Description

technical field [0001] The invention designs a rail vehicle underframe floor welding process, which belongs to the technical field of manufacturing large parts of aluminum alloy car bodies such as subways and urban rails. Background technique [0002] The underframe floor is welded by multiple super-long and ultra-wide 6-series aluminum profiles. It is an important part of the subway, urban rail and other car bodies. Because the underframe carries the weight of passengers and the lower part hangs various equipment, it is a The important parts of the traction transmission between the carriages of the train bear huge impact loads from couplers, bogies, etc., so the welding quality of the chassis floor plays a vital role in the safe operation and service life of the vehicle. Aluminum alloys are prone to welding defects such as pores, unfused and cracks during the welding process, and due to the profile Ultra-long, ultra-wide, welding speed will also be affected. Contents of...

Claims

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Application Information

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IPC IPC(8): B23K9/02B23K37/04B23K9/235B23K103/10
CPCB23K9/0026B23K9/02B23K9/235B23K37/0435B23K2103/10
Inventor 高安江王刚魏德新吕常石郭雪艳曲强郭学彬刘菲菲
Owner 丛林铝业科技(山东)有限责任公司
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