Forging Cymbals: the Zildjian Tradition
铜镲片的锻造：从 Zildjian 到手工锤面
标签：镲片, B20青铜, Zildjian, 调音车削, 锤纹
镲片用 B20 青铜（Cu 80%、Sn 20%，冷加工困难，须热轧开坯）：圆板先 750–800℃ 热轧至 2–4 mm，模锻或人工锤打出穹顶（cup）与音辐（tone grooves），中途多次 650℃ 退火；再车削调音（lathing）去掉 0.2–0.5 mm 形成厚度渐变，最后手工锤面定音色，每片数千锤点即音色「指纹」。Zildjian 家族 1623 年创立于伊斯坦布尔，配方保密四百年；土耳其 Istanbul Mehmet 与中国镲厂现也产 B20 镲，手工锤片售价是纯车削片的 2–5 倍。
Cymbals use B20 bronze (80% Cu, 20% Sn, too hard to cold-work, so billets are hot-rolled): discs are rolled at 750–800°C to 2–4 mm, die-forged or hand-hammered into the cup and tone grooves with repeated 650°C anneals, then lathe-tuned — cutting 0.2–0.5 mm to set the thickness taper — and finally hand-hammered for voice, with several thousand hammer points per cymbal as its tonal fingerprint. The Zildjian family founded their trade in Constantinople in 1623 and kept the alloy secret for four centuries; Istanbul Mehmet in Turkey and Chinese makers now also produce B20, with hand-hammered lines priced 2–5 times lathed-only models.