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Loader Bucket Edge Plate Deformation Of The Main Causes And Preventive Measures

Company in the manufacturing Loader Bucket process, the main board are often the arch edge, collapsed, distorted, etc. deformation, the main blade plate in order to ensure smooth, hydraulic machines we use plastic, which not only extended the production cycle, increasing production costs, and increased the main edge Board of internal stress, for which we bucket structure and production process analysis, found the edge of plate deformation of the main reasons, and to develop appropriate prevention measures.

1 Bucket Analysis of deformation of the main blade plate

(1) management reasons Bucket main blade plate for the sheet material after gas cut off for outsourcing parts, due to plate loading and unloading, transportation, storage, etc. causes the main board appears on the arch edge, collapsed and deflection. On the first two deformation before welding bucket hydraulic machine can be carried out on the school board level, but the deflection is difficult to adjust, and even into the next bucket to welding processes.

(2) design of the reasons Figure 1

Bucket concentrated in the back of the bottom seam weld and weld-intensive forms of unreasonable workload and the welding heat input were quite large, bucket structure and layout of the back seam shown in Figure 1.

Same time, because the deflection of the main blade plate to the main board and the bucket bottom edge, fighting increased and uneven wall docking space, when requested by the various pieces of drawings assembled by the middle of the scene were measured Butt Gap and 3mm to 10mm, the ends of the average gap 18mm and 11mm, (see Figure 1 Layout of the bucket on the back seam as shown in dotted lines long). Butt welding gap from the increase in workload and welding heat input, gap uneven so uneven heat input welding, after welding, the cooling shrinkage deformation will be uniform, so that the weld cools, it will make the Big Dipper floor, bucket wall, board director of a corresponding welding deformation.

(3) operation causes Bucket welding process in three steps: bucket wall coil; struggle and fight side panel welding, butt the main blade plate, bucket shop floor, and with the child support plate welding bucket; welding. This three-step process in order to separate non-interference.

Figure 2 In the bucket wall coil, because of both ends of Shouli Bu or wall-pressure line and the Big Dipper and other reasons, both sides are not parallel to the distorted, as shown in Figure 2, so that after docking with the main blade drive the main board blade plate distortion.

Shop floor fight, because fighting bottom formation or for other reasons not to fight on both sides of the Big Dipper above the local bottom side or main edge board, undermining the main blade plate and the two fight side constitute the plane, complete welding bucket can not be flat after the mistaken to the main edge plate welding deformation generated, the specific structure of the diagram shown in Figure 1, the standard bucket local high point.

Figure 3 Welding bucket did not reduce the welding distortion from the perspective of welding process developed by the implementation of the welding sequence, welding carried out symmetrically, especially in the welding edge plate and fight the main panel, bucket bottom of the butt weld, the any welding operation, resulting in over-concentration of welding heat input, both sides of the welding deformation can not cancel each other out, so that the main edge panels produce distortion, see Figure 3 shown in dotted lines long.

Step process that generated the error and the welding deformation are concentrated together, causing the bucket after welding, the main blade plate deformation.

2 blade plate to prevent deformation of the main bucket measures

(1) strengthen the management Bucket back to the main blade board contract manufacturing plants, on the smoothness does not meet the requirements for school level, on the deflection, and the butt edge and trunk wall with semi-automatic flame Cutting Machine For gas cutting, so that after treatment, to ensure the main board of the straight edge.

(2) Improvement of The bucket bottom plate butt gap with the main blade decreases from the 10mm to 5mm, 5mm side to remove the butt and trunk space, and the long struggle between the hole wall plug weld to continuous uniform distribution intermittent weld hole, specific improvements shown in Figure 4.

Improved greatly reduced by more than welding heat input and welding workload, welding heat input was more uniform and not concentrated, thus reducing the main blade plate and the welding deformation.

(3) improve the construction quality Figure 4

In the coil-pressure process to ensure both sides of the parallel line and the bucket wall, fighting force uniform wall at both ends, preventing distortion; shop floor fight when the fight to ensure smooth and not higher than the bottom side on both sides of the Big Dipper constitute the main blade board the plane; welding bucket to make a symmetrically applied welding, in particular, the main blade plate and the bucket bottom, bucket wall of butt weld section to be applied over the solder points, lower welding heat input and welding heat input concentration, so that both sides of seam welding deformation offset each other, the specific welding operation sequence shown in Figure 4, digital serial number.

This three-step processes will cause deformation of the main blade plate construction operations to minimize the role of factors, thus reducing the main blade plate after welding deformation.

3 Conclusion

Targeted through the implementation of these preventive measures, the company's loader bucket in the future production process to ensure that the main edge roughness 6mm plate requirements, eliminating the need for plastic surgery after welding process, not only shorten the production cycle and reduce product costs, and reduce the main blade plate in the internal stress, improved product quality, and achieved good economic benefits.

About the Author

I am Frbiz Site writer, reports some information about alcoran , pay as you go 6300.

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Please explain ?

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