The plating process often produces some quality problems due to various factors. For some uncommon quality problems, especially those that occasionally occur under the same plating process conditions, plating operators often find it difficult to identify the main cause of the problem, resulting in the problem not being completely solved.<\/p>\n\n\n\n
1 Distortion when closing the tape after plating<\/p>\n\n\n\n
Description of the problem: When the first plate of the material head of all the plating process was completed and the tape reel was started, it was found that the tape material before entering the plate began to appear distorted, as the phenomenon would affect the quality of cutting off the drop material in the stamping process, so the plating was immediately stopped. After replacing another tray of the same part with the same batch, the plated strip no longer appeared distorted under the same conditions. According to the plating operator, the phenomenon had occurred a year ago on another part of the same type.<\/p>\n\n\n\n
2 product process stamping process stamping copper strip into molded parts a plating process using automatic plating production line selection of gold plating and selection of tin plating a stamping process automatic cutting machine drop a finished plant assembly.<\/p>\n\n\n\n
3Problem analysisThe batch of strip material after the parts stamping molding, plating automatic production line plating before all normal, until after the completion of the plating process to appear distortion phenomenon, the initial analysis that the plating process caused. However, by replacing the same strip parts in the same plating line and keeping all process conditions unchanged, the distortion disappeared, indicating that the cause of the problem was not in the plating process. Subsequently, it was analyzed whether there was a slight difference in the strip material used, which was made by different dies, but it was confirmed that the parts in this batch were made by the same high-speed punching machine and were stamped by the same die. Finally, it was suspected that the performance of the base material of the strip material had changed, but after inspection, the materials used in the batch of parts were all the same batch of materials from the same supplier, and the indicators such as tensile strength and hardness of the copper strip base material were tested to be in the qualified range. For the phenomenon of the quality problem analysis, the cause is due to the copper strip substrate stress unevenly caused. The distortion of the copper strip in the batch of strip material may be the copper strip manufacturer in the copper strip split open position on both sides, the stress of the copper strip substrate itself is not uniform enough, after plating, resulting in this uneven stress phenomenon aggravated, resulting in the strip material plating in the traction of the distortion. As the number of copper strips belonging to the split edge strip is small in the same batch, this phenomenon rarely occurs and is not given enough attention.<\/p>\n\n\n\n
4 treatment measures to ensure that the plating parts of gold and tin plating fluctuations do not exceed the allowable range of the parts, appropriate to reduce the traction force of the strip material when plating, in order to reduce the twist amplitude of the strip material, to ensure that the press drop normal.<\/p>\n\n\n\n
5 implementation effect of the plate with material pins in accordance with the above measures after implementation, plating out of the parts plating quality qualified, and can meet the requirements of the stamping process drop.<\/p>\n\n\n\n
6 Process requirements plating factory in the strip material plating process to make provisions, requiring operators to monitor the strip material after plating shape changes, and according to the situation in a timely manner to make the corresponding treatment.<\/p>\n","protected":false},"excerpt":{"rendered":"
The plating process often produces some quality problems due to various factors. For some uncommon quality problems, especially those that occasionally occur under the same plating process conditions, plating operators often find it difficult...<\/p>\n","protected":false},"author":1,"featured_media":340,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[10,13,16],"class_list":["post-339","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-enameled-wire","tag-electrical-wire","tag-power-exhibition","tag-transformer-windings"],"yoast_head":"\n