Unlock instant, AI-driven research and patent intelligence for your innovation.

Post-weld orthopedic tool and method for hollow extruded profile

An extruded profile and orthopedic technology is applied in the field of post-friction stir welding orthopedic of aluminum alloy hollow extruded travel vehicle body parts, which can solve problems such as difficulties and achieve the effects of low orthopedic cost, obvious advantages and obvious economical efficiency.

Active Publication Date: 2015-12-02
AVIC BEIJING AERONAUTICAL MFG TECH RES INST
View PDF5 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

For larger parts, such as post-welding orthopedics of 22m long chassis, it is difficult to adopt this method

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Post-weld orthopedic tool and method for hollow extruded profile
  • Post-weld orthopedic tool and method for hollow extruded profile
  • Post-weld orthopedic tool and method for hollow extruded profile

Examples

Experimental program
Comparison scheme
Effect test

example 1

[0052] The side wall unit of a rail subway car body is composed of three sets of hollow extruded profiles spliced ​​by FSW. After assembly and welding, the width of the parts is 1500mm and the length is 3200mm. According to the assembly requirements, the flatness requirements of the product after welding are: side wall flatness (length direction) ≤ 1mm / m, side wall flatness (width direction) ≤ 1.5mm / m, twisting degree (warping) ≤ 1.5mm / m 3m. After friction stir welding, the deformation of one of the side wall products is tested. Using traditional post-welding comprehensive orthopedic techniques (mechanical orthopedic + flame orthopedic) for orthopedics takes about 50 minutes per piece of orthopedics on average, and the product is easily damaged. The orthopedic process needs to be equipped with a special mechanical orthopedic device and a flame orthopedic device. It takes 10 minutes on average for each side wall part to be rectified by adopting the present invention. The ort...

example 2

[0054] The floor of a rail aluminum alloy car body is spliced ​​by multiple groups of hollow extruded profiles by friction stir welding. After assembly and welding, the total length of the floor profile is about 22m, the width is 2.5m, and the thickness of the profile is about 70mm. It is required that the lateral deflection of the floor after assembly and welding is less than 2mm, straightness ≤ 2mm / 2m, and overall length ≤ 3mm; twisting degree (warping) ≤ 1mm / m, overall length ≤ 5mm. Although the deformation is very small after welding by friction stir welding technology, due to the thin wall of the product and clamping conditions, the actual flatness of the product after welding is about 2.5mm / 2m, but the local deformation can reach 10mm. The amount of post-deformation is difficult to meet the requirements. Due to the strict requirements on the amount of deformation after welding of the floor assembly, and due to the large size of the floor, it is difficult to meet the def...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

PropertyMeasurementUnit
lengthaaaaaaaaaa
widthaaaaaaaaaa
thicknessaaaaaaaaaa
Login to View More

Abstract

The invention provides a postwelding correcting tool and method for a hollow extruded section bar. The correcting tool comprises a clamping handle, a transition portion and the correcting end, wherein the clamping handle is used for being connected with a rotating and upsetting driving device, the transition portion is in a cone frustum shape, the transition portion and the clamping handle are integrally connected, and the correcting end is arranged on one side, far away from the clamping handle, of the transition portion. The postwelding correcting tool has the advantages of being high in correcting efficiency, convenient to operate, high in correcting quality and good in economical benefit.

Description

technical field [0001] The invention relates to a post-weld orthopedic tool and a orthopedic method for hollow extruded profiles, which are suitable for post-weld orthopedics of hollow extruded profiles after friction stir welding, and are particularly suitable for post-weld orthopedics of aluminum alloy hollow extruded stroke car body parts after friction stir welding . Background technique [0002] With the continuous improvement and continuous development of aluminum alloy smelting, profile extrusion, welding and other technologies in recent years, aluminum alloy hollow extrusion profiles are more and more used in industry. Especially in the rail transit industry, as the speed of the train continues to increase, the requirements for reducing the weight of the train, improving the strength of the joint and structural safety are getting higher and higher. Multiple groups of hollow extruded profiles are spliced ​​by double-sided welding. There are more and more applications...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Patents(China)
IPC IPC(8): B23K37/00B21D3/00
Inventor 孙占国栾国红王卫兵佟建华
Owner AVIC BEIJING AERONAUTICAL MFG TECH RES INST