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发明授权
CN108376651B 一种引线框架用KFC异型铜带加工工艺 有权

一种引线框架用KFC异型铜带加工工艺
摘要：
本发明公开了一种引线框架用KFC异型铜带加工工艺，涉及KFC异型精密铜带加工工艺领域。该引线框架用KFC异型铜带加工工艺，包括如下步骤：S1、制造铜带胚料：将上引连续铸造KFC铜合金杆放入到冷挤压模具中，通过模具口挤出各种形状的铜带坯料；S2、精轧：用圆弧段对铜带坯料进行精轧，而后并进行多道次轧；S3、退火：通过钟罩式退火炉将铜带加热至300度，待保护气氛对铜带清扫完毕后进行退火。该引线框架用KFC异型铜带加工工艺，通过采用钟罩式光亮退火技术替代现有井式退火，能比真空更有效地除去蒸发的润滑剂,以保证退火后的工件表面光洁明亮，并且缩短了退火处理时间，提高了生产效率。
摘要（英）：

The invention discloses a KFC special-shaped high-strength high-conductivity precision copper strip machining process for a lead frame, and relates to the field of a KFC special-shaped precise copperstrip machining process. The machining process comprises the steps of s1, manufacturing a copper strip blank material, namely putting an upper induced continuous casting KFC copper alloy rod into a cold extrusion die, extruding copper strip blanks with various shapes through a die opening; s2, Finish rolling, carrying out finish rolling on the copper strip blanks by an arc section, and then carrying out multi-pass rolling; s3, annealing, heating the copper strip to 300 DEG C through a bell type annealing furnace, and annealing after the copper strip is cleaned by protective atmosphere. In themachining process, a bell type bright annealing technology is adopted to replace an existing well annealing, so that the evaporated lubricant can be removed more effectively than vacuum, and the surface of the annealed workpiece is smooth and bright. The annealing treatment time is shortened, and the production efficiency is improved.

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