查询词典 cast steel

Class 250 cast iron and Class 300 steel flanges can not be used on these valves.

250磅级铸铁和300磅级钢法兰不能用在这些阀门上。

Class 250 cast iron and Class 300 steel flanges can not be used on these valves.

在这些阀门上不能使用250磅级铸铁和300磅级钢法兰。

It features a self-sharpening hardened steel blade, a cast metal handle with tension spring to secure in any position, and a safety guard rail with handle lock.

它具有自我锐化淬火钢叶片的铸造处理与春季的紧张局势，以确保在任何位置，以及一个安全护栏手柄锁。

The hard alloy is mainly suitable for the cutting and processing of cast iron and heat-resisting alloy steel.

该硬质合金主要适于铸铁、耐热合金钢的切削和加工。

And with modifying treatment the impact toughness of the cast hot-work die steel has been improved greatly.

我国科研工作者研究表明，对钢进行微合金化就是一条行之有效的办法 [1～ 3 ] 。

The effects of RE-Nb on microstructure and mechanical properties of cast 3Cr2MoNiWV hot-work die steel were investigated by SEM, TEM and AJ-1 electronic tensile test equipment.

用扫描电镜、透射电镜和万能电子材料拉伸试验机研究了RE—Nb对铸造3Cr2MoNiWV热锻模具钢组织和力学性能的影响。

cast hot-work die steel ; heat treatment process ; impact toughness and hardness

本文中采用 RE- Nb作为变质剂，对该钢种进行处理，并采用不同的高

The effects of heat treatment process on impat toughness and hardness of the cast 3Cr2MoWVNi hot-work die steel was studied.

众所周知，铸造模具因存在成分偏析和铸造缺陷使其力学性能远低于锻造模具。

Compared with original cast 3Cr2MoNiWV hot-work die steel, the impact toughness and UTS at both room and high temperature of modified one can be increased by 1.9 times, 234 MPa and 179 MPa respectively, with same hardness.

与常规的铸造3Cr2MoNiWV热锻模具钢相比，冲击韧性提高1.9倍，达到了72.3J／cm^2，常温抗拉强度和高温抗拉强度（600℃）分别提高了212MPa和206MPa，达到1446MPa和104

The results indicate that the thermal fatigue of the cast hot-work die steel is high-cycle thermal fatigue, therefore the main factor affecting thermal fatigue resistance is thermal strength and thermal stability.

随着V/C增加，热疲劳抗力先增后减，当V/C比为3.0时，组织中析出了细小弥散的VC，改善了钢的热强性和热稳定性，热疲劳抗力最高。

I can not make it blossom and suits me

我不能让树为我开花

When temperatures are above approximately 80 °C discolouration of the raceways or rolling elements is a frequent feature.

当温度高于 80 °C 左右时，滚道或滚动元件褪色是很常见的特征。