Hot vs Cold Spinning
热旋与冷旋
标签：热旋, 冷旋, 对比
冷旋在室温，适合塑性好的紫铜/黄铜薄板，表面光、尺寸准。热旋将坯料局部或整体加热（铜约 400–600℃）后旋压，适合厚板、深拉伸或加工硬化快的合金，可一次成形更深。热旋需防氧化（保护气或快速作业）并配备耐热滚轮。选型：浅件薄料→冷旋；深件厚料→热旋。
Cold spinning is at room temp — best for ductile copper/brass sheet: smooth surface, accurate. Hot spinning heats the blank (copper ~400–600℃) for thick, deep, or fast-hardening alloys, enabling deeper one-pass forms. Hot needs oxidation control (shielding or speed) and heat-resistant rollers. Pick: shallow/thin → cold; deep/thick → hot. ---