冷弯空心型钢是冷弯型钢中的一类重要产品，其通常包括圆管、方、矩形管以及按照特殊要求制作的异形管。
Cold-roll void forming sheet is an important product in cold-roll forming sheet, which usually includes pipe, square tube, rectangle tube and unusual tube made by special requirements.
研究了两类锻造工艺对航天用TC 4钛合金异形锻件的显微组织及拉伸性能的影响。
The influence of two abnormal forging processes on the microstructures and tensile properties of TC4 alloy is investigated.
内高压成形适合于制造空心变截面构件，给出了用内高压成形制造的典型结构件、空心轴类件和异形管件。
IHPF is fit for manufacturing hollow components with changeable cross-section including typical structural components, hollow axle parts and special shape pipes.
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