濟(jì)南鍛件廠采用非常規(guī)的熱處理工藝，克服了鍛件內(nèi)外組織轉(zhuǎn)變不同時性，減少了熱應(yīng)力和組織應(yīng)力，因此效果比較明顯，鍛件在熱處理過程中，下列方法發(fā)揮了重要作用，同時也節(jié)約了大量的能源，值得提倡和推廣。

　　Ji'nan forging factory using non conventional heat treatment process, to overcome the change inside and outside the organization and reduce the forging, heat stress and stress, so the effect is more obvious, forged in the heat treatment process, the following methods play an important role, but also saves a lot of energy, worthy of promotion and promotion.

　　1、表面淬火(感應(yīng)加熱、火焰加熱、電解加熱淬火等)。例如螺桿、絲杠、主軸等細(xì)長形零件采用表面淬火后既可保證表面有足夠的硬度、高的耐磨性和疲勞強度，同時內(nèi)部具有良好的強度和韌性，零件的整體變形小。

　　1, surface quenching (induction heating, flame heating, electrolytic heating, quenching, etc.). For example, screw, screw spindle slender parts by surface after quenching can ensure the surface wear resistance and fatigue strength, sufficient hardness high, while the interior has good strength and toughness, the whole deformation of small parts.

　　2、鍛件形變熱處理。

　　2 、 deformation heat treatment of forgings.

　　3、可控氣氛和真空熱處理。

　　3 、 controlled atmosphere and vacuum heat treatment.

　　4、鍛件廠化學(xué)熱處理。對鍛件進(jìn)行滲氮、軟氮化等，則內(nèi)外組織中的化學(xué)成分存在差異，同時其溫度在相變點以下，因此避免了整體淬火后變形明顯增加的可能，適用于變形要求嚴(yán)格的鍛件。

　　4 、 chemical heat treatment of forgings factory. Carry on the forging of nitriding, soft nitriding, there are differences in the chemical composition of inside and outside the organization, at the same time, the temperature at the phase transition point, thus avoiding the overall deformation increased significantly after quenching may apply to the strict requirements of the forging deformation.

　　5、超聲波淬火。利用超聲波能量使淬火介質(zhì)產(chǎn)生振動，可消除淬火鍛件表面的蒸汽膜，使冷卻速度提高，使淬火過程劇烈程度增加，冷卻更加均勻，可避免鍛件表面產(chǎn)生軟點、軟帶，內(nèi)應(yīng)力和變形則明顯減小。

　　5 . The use of ultrasonic energy to the quenching medium vibration, can eliminate vapor quenching forging surface, the cooling speed increased, the quenching process intensity increases, more uniform cooling, can avoid forging surface soft, soft belt, internal stress and deformation is obviously reduced.

　　6、快速加熱。是指采用提高加熱的溫度，使鍛件的表面迅速達(dá)到淬火溫度，隨后完成淬火的熱處理工藝，例如齒輪在鹽浴爐中轉(zhuǎn)動加熱齒部或進(jìn)行高頻加熱等，由于加熱時間短，表面的奧氏體晶粒沒有長大，淬火后表面的熱量無法傳遞到內(nèi)部，因此僅僅是表面發(fā)生了組織的轉(zhuǎn)變，變形明顯減小。

　　6, rapid heating. Refers to the increase of heating temperature, the surface temperature of the forgings quickly reached the heat treatment process of quenching and then completed, such as a gear in a salt bath heating tooth or rotating high frequency heating, the heating time is short, the austenite grain surface did not grow up, after quenching surface heat can not be transferred to the interior, so just happened to the structure change of surface deformation is obviously reduced.