Bending
แปลว่า(english) A preliminary forging operation to give the piece approximately the correct shape for subsequent forming.
ผลการค้นหา
ประเภทการค้นหา
ตัวกรองผลการค้นหา
ค้นเจอ 5 รายการ
give the right to access/possession of site
แปลว่าให้สิทธิในการเข้าครอบครองพื้นที่ก่อสร้าง
Give effect
แปลว่ายังผลให้
Give the right of access to the site
แปลว่าให้สิทธิในการเข้าพื้นที่ก่อสร้าง
Basic Oxygen Furnace (BOF)
แปลว่า(english) "WHAT A pear-shaped furnace, lined with refractory bricks, that refines molten iron from the blast furnace and scrap into steel. Up to 30% of the charge into the BOF can be scrap, with hot metal accounting for the rest. WHY BOFs, which can refine a heat (batch) of steel in less than 45 minutes, replaced open-hearth furnaces in the 1950s; the latter required five to six hours to process the metal. The BOF's rapid operation, lower cost and ease of control give it a distinct advantage over previous methods. HOW Scrap is dumped into the furnace vessel, followed by the hot metal from the blast furnace. A lance is lowered from above, through which blows a high-pressure stream of oxygen to cause chemical reactions that separate impurities as fumes or slag. Once refined, the liquid steel and slag are poured into separate containers. "