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Friction stir welding step difference control process

A technology of friction stir welding and step difference, which is applied in the direction of manufacturing tools, other manufacturing equipment/tools, welding equipment, etc., can solve the problems of friction stir welding products that cannot be verified, product scrapping and increased testing costs, and reduce product debugging time , shorten the welding debugging time, and avoid the effect of influence

Active Publication Date: 2019-05-14
NANJING TOOLING
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Friction stir welding products cannot be verified by non-destructive chisel inspection like the traditional spot welding process to verify the welding performance, and the welding performance can only be verified by metallographic tests
However, in order for the friction stir welding step difference of the battery box to meet the customer's requirements, the cost of product scrapping and testing has greatly increased, so how to effectively control the friction stir welding step difference through continuous summary and innovation of technology has become an urgent research issue;

Method used

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  • Friction stir welding step difference control process

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Experimental program
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Effect test

Embodiment 1

[0029] Such as figure 1 As shown, a friction stir welding step control process, the steps are as follows:

[0030] S1. CNC processing beams; configure 4 parallel beams, and configure longitudinal beams at both ends of the beams. The longitudinal beams connect the ends of the beams in turn to form a frame, and the frame as a whole has an arched structure; the high and low steps between the beams The difference is 0.6 mm;

[0031] S2. Manual fixed-point positioning welding of the aluminum bottom plate; the aluminum bottom plate to be processed is arranged above the frame, the edge of the aluminum bottom plate and the frame are clamped by the clamp, and the position between the aluminum bottom plate and the frame is spot welded, and the spot welding The solder joints avoid the clamping part of the fixture;

[0032] S3. Manual measurement, leveling, and grinding; manually measure the height difference between the friction-welded battery box frame and the aluminum bottom plate, a...

Embodiment 2

[0036] S1. CNC machining beams; 5 parallel beams are arranged, and longitudinal beams are arranged at both ends of the beams. The longitudinal beams connect the ends of the beams in turn to form a frame, and the frame as a whole has an arched structure; the high and low steps between the beams The difference is 0.7mm;

[0037] S2. Manual fixed-point positioning welding of the aluminum bottom plate; the aluminum bottom plate to be processed is arranged above the frame, the edge of the aluminum bottom plate and the frame are clamped by the clamp, and the position between the aluminum bottom plate and the frame is spot welded, and the spot welding The solder joints avoid the clamping part of the fixture;

[0038] S3. Manual measurement, leveling, and grinding; manual measurement of the height difference between the friction-welded battery box frame and the aluminum bottom plate, manual measurement of the height difference between the friction-welded battery box frame and the alum...

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Abstract

The invention provides a friction stir welding step difference control process, and in particular, relates to the field of vehicle fitting production. The friction stir welding step difference controlprocess comprises the following steps: (S1) longitudinal beams are arranged at two ends of cross beams; the end parts of the cross beams are connected by the longitudinal beams to form a frame; and the high-low step difference of the cross beams is 0.6-0.7 mm; (S2) the edge of an aluminum base plate and the frame are clamped through a fixture; the spot welding is performed on a position between the aluminum base plate and the frame; and the welding point of spot welding is avoided from the clamping place of the fixture; (S3) a height difference between the battery box frame and the aluminum base plate by friction welding is manually measured; and then, a welding point of manual repair welding is polished to guarantee the flatness of a friction stir welding surface; (S4) a gap between thealuminum base plate and the friction-welded battery box frame is measured by using a patch ruler, and is guaranteed to be lower than 0.25 mm; and (S5) a gap between a tool reference and a part bondedsurface is adjusted; and a gap between the basic surface of the aluminum base plate and bonded surfaces of parts to be welded is adjusted. The friction stir welding step difference control process caneffectively control the friction stir welding step difference to guarantee the step difference of products after friction stir welding to meet customer demands.

Description

technical field [0001] The invention belongs to the field of auto parts production, and in particular relates to a step difference control process of friction stir welding. Background technique [0002] China's new energy vehicle industry began in the early 21st century. In the process of automobile production, friction stir welding is an important link; [0003] Friction stir welding products cannot be verified by non-destructive chisel inspection like the traditional spot welding process to verify the welding performance, and the welding performance can only be verified by metallographic tests. However, in order for the friction stir welding step difference of the battery box to meet the customer's requirements, the cost of product scrapping and testing has greatly increased, so how to effectively control the friction stir welding step difference through continuous summary and innovation of technology has become an urgent research issue; [0004] In view of the above def...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B23P23/04B23K20/12B23K20/24
Inventor 李成
Owner NANJING TOOLING