High cycle fatigue properties of metal injection molded ( MIM ) cold work tool steel and wrought steel ( JIS SKD11 ) were investigated via ultrasonic fatigue test .

用超声疲劳试验研究了金属注射成形（MIM）冷作工具钢和 锻 轧钢（JISSKD11）的高周疲劳性能。

Study on Assemble Shrink Range of Mono - bloc Wrought Steel Wheel - set of Electric Locomotive

电力机车整体 辗 钢车轮压装过盈量的研究

The wrought steel specimens were tempered at 423K for 1 hour .

锻 轧钢试样于423K回火1h。

Manufacture of φ 1250mm wrought steel solid locomotive wheel

直径φ 1250mm辗 钢整体机车轮的生产制造

Trunnion of large size steel water pitcher can not wrought with rolled steel because the mechanical performance of the molten trunnion can not reach operating requirements and can only be forged with steel billet .

耳轴因尺寸限制无法直接用 圆钢 锻造，而铸造耳轴力学性能达不到使用要求，所以只能采用钢锭锻造的方法。

Seventeen1970s the use of pig iron the early nineteenth century the use of wrought iron bridges and the construction of housing which is a prelude to the emergence of steel .

十七世纪70年代开始使用生铁、十九世纪初开始使用 熟铁建造桥梁和房屋，这是 钢 结构出现的前奏。

Flower of wrought iron or steel ( excl. indoor ornaments and jewellery )

锻 钢或 锻铁制 花饰（不包括室内装饰品和珠宝）