The nitride layer was formed on the surface of ductile cast iron by gas multi-element penetration, and the phase structure and section appearance of nitride layer were analyzed by the XRD and SEM.
球墨铸铁经过气体多元共渗后可在其表面形成氮化层，通过X射线衍射和扫描电镜对渗层的相结构与形貌进行分析。
Adapting to pouring system and filling mold water imitation of gravity cast and low pressure cast, the multi-purpose water imitation experiment set is studied.
研制了一套多功能水模拟试验台，适用于重力铸造及低压铸造浇注系统和充型过程的水模拟试验。
The optimum chemical composition and heat treatment process of multi-element low alloys high Cr-Mn white cast iron have been determined.
确定了多元低合金高铬锰白口铸铁的最佳成分和热处理工艺。
DX pile is a new type of squeezed cast-in-situ pile with multi-branch.
dx桩是近年来新兴的一种多节挤扩灌注桩。
DX pile is a new type of squeezed cast-in-situ pile with multi-branch.
dx桩是近年来新兴的一种多节挤扩灌注桩。
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