【廣告】
鍛造是一種利用鍛壓機械對金屬坯料施加壓力,使其產(chǎn)生塑性變形以獲得具有一定機械性能、一定形狀和尺寸鍛件的加工方法,鍛壓(鍛造與沖壓)的兩大組成部分之一。
Forging is a kind of forging process that uses pressure forming machinery to exert pressure on metal billet and make it produce plastic deformation to obtain certain processing methods of forging, which has certain mechanical properties, shape and size, and is one of the two components of forging, forging and stamping.
在考慮鍛造工藝時特別是后一火的鍛造時,應盡量避免在臨界變形程度下進行,以免得到粗大晶粒組織。具體來說,高溫下金屬塑性好,變形抗力小,應采用遠大于臨界變形程度的較大變形量鍛造;低溫修正時采用低于臨界變形程度的小變形量進行局部修整。
When the forging process is cidered, especially when the last fire is forged, the critical deformation should be avoided as far as , so as to avoid coarse grain structure. Concretely speaking, high temperature metal has good plasticity and small deformation resistance. We should adopt large deformation amount forging far greater than critical deformation degree. When low temperature correction is used, small deformation below critical deformation degree should be used for local trimming.
機器鍛造是自由鍛造的主要方法,可鍛造質(zhì)量達到幾百噸的大型鍛件,這使得自由鍛在重型機械制造中具有特別重要的作用。鍛造生產(chǎn)加熱設備和鍛壓設備不可少,這些設備釋放大量熱能,需要我們在通風凈化環(huán)境中進行。例如,水輪機主軸、多拐曲軸、大型連桿、重要的齒輪零件,在工作時都承受很大的載荷,常采用自由鍛造方法生產(chǎn)毛坯,使其具有很高的力學性能.滿足使用要求。
Machine forging is the main method of free forging. It can forge large forgings with a quality of hundreds of t, which makes free forging play a very role in heavy machinery manufacturing. For example, the main shaft of a hydraulic turbine, a multi crank crankshaft, a large connecting rod, and important gear parts are subjected to heavy loads when they are working. Free forging is often used to produce blanks, so that they have high mechanical properties.
自由鍛造分手工自由鍛和機器自由鍛。手工自由鍛生產(chǎn)效率低,勞動強度大,僅用于修配或簡單、小型、小批鍛件的生產(chǎn)。
Manual free forging is inefficient and labor intensive. It is only used for the production of repair or simple, small and small forgings.Free forging cists of manual free forging and machine free forging.