Introduction to the folding of Shanxi flange forging fish scale
The fish scale folding of Shanxi flange forging mainly occurs in the square part of Shanxi flange forging. In the production process of multi hammer forming Shanxi flange forging, each hammer operation acts on the same center, and fish scale folding will not be formed at this time. Due to the aging of equipment and other factors, the clearance of guide rail can not be accurately controlled within the set range.
The inclined irons of the left and right supporting arms will also become loose, which results in the phenomenon that the counter striking center of the second hammer does not coincide with the first hammer and produces a small offset. Under the influence of the die brake buckle of Shanxi flange forging, the upper die will be squeezed back to the normal hammering center during the butting process, and will deviate from the normal position again during the descending and ascending process of the hammer head, and this process will occur repeatedly. Each hammer blow will produce a fold, and the latter fold will also squeeze the former fold into the forging.
To sum up, the materials of flange forgings in Shanxi are relatively special, with fewer batches and more varieties, which greatly increases the difficulty of operation and design for the production personnel of flange forgings in Shanxi. On the other hand, influenced by factors such as small tonnage, structural limitations and equipment aging, the technological level of flange forging production in Shanxi has been greatly affected, which has long shown another adverse effect of die forging folding problem from another side.
