Measures to prevent deformation of circular saws by high-frequency hardening machine quenching ۽ ليولنگ ​​جا طريقا

1. The saw board should enter the cooling medium vertically during quenching, so that both ends of the saw board are cooled at the same time. When oil is used as the quenching cooling medium, it is generally better to control it at 60-90°C. If the oil temperature is lower than 50℃, the deformation of the saw board will increase, and there is a potential risk of quenching cracking. In order to reduce stress, austempering or graded quenching can be used.

2. Under the premise of ensuring hardening, the method of power-off heating is adopted to reduce the impact of electromagnetic waves on the workpiece.

3. When the leveling still fails to meet the requirements after two phase changes, you can use a cold hammer for leveling, but the hammering technology is very demanding, and the deformation will increase if it is not correct.

4. 65Mn اسٽيل جي ايم ايس پوائنٽ 270 ℃ بابت آهي. جڏهن martensitic transformation ٿئي ٿي، اسٽيل جي plasticity تمام سٺو آهي. جيڪڏهن آري بورڊ هن وقت ٻن پليٽن جي وچ ۾ رکيل آهي، ان کي سطح تي مجبور ڪري سگهجي ٿو.

5. مرحلي جي تبديليءَ جو عمل جيڪو ٿئي ٿو جڏهن آري بورڊ جي مزاج کي وڌيڪ ليولنگ ​​لاءِ استعمال ڪري سگهجي ٿو. اسٽيڪنگ دوران جمع ٿيل غلطي کي گھٽائڻ لاءِ گرميءَ کان اڳ آري بليڊ جي مٿاڇري کي صاف ڪريو. ٽمپيرنگ کي فليٽ پليٽ سان دٻايو وڃي ۽ گرميءَ جو وقت ڪافي هجڻ گهرجي.

6. The heating temperature should take the upper limit, and the heating time should be sufficient to stabilize the internal structure of the saw board, reduce the Ms point, increase the amount of retained austenite after quenching, and reduce the deformation of the saw board.