site logo

Upungufu wa kawaida na hatua za kukabiliana na ugumu wa induction kwenye uso wa vifaa vya kupokanzwa vya induction

Upungufu wa kawaida na hatua za kukabiliana na ugumu wa induction kwenye uso wa vifaa vya kupokanzwa vya induction

1. Material factors

The identification method we often use is the spark identification method. This is the simplest method. Check the sparks of the workpiece on the grinding wheel. You can roughly know whether the carbon content of the workpiece has changed. The higher the carbon content, the more sparks.

2. The quenching heating temperature is not enough or the pre-cooling time is long

Kuzima halijoto ya kupokanzwa haitoshi au muda wa kabla ya kupoa ni mrefu sana, na hivyo kusababisha halijoto ya chini sana wakati wa kuzima. Chukua chuma cha kati cha kaboni kama mfano. Muundo uliozimwa wa zamani una kiasi kikubwa cha ferrite isiyoweza kufutwa, na muundo wa mwisho ni troostite au sorbite.

3. Upungufu wa baridi

① Hasa wakati wa kuzima kwa skanning, kwa sababu eneo la dawa ni fupi sana, baada ya kazi ya kuzimwa, baada ya kupita kwenye eneo la kunyunyizia, joto la msingi hufanya uso kuwa na hasira (hatua kubwa ya shimoni iliyopigwa ina uwezekano mkubwa wa kuzalishwa wakati nafasi ya juu iko), na uso unajizuia. Halijoto ya kuwasha ni ya juu sana, ambayo mara nyingi inaweza kuhisiwa kutoka kwa rangi ya uso na halijoto.

②In the one-time heating method, the cooling time is too short, the self-tempering temperature is too high, or the cross-sectional area of ​​the spray hole is reduced by the scale of the spray hole, which causes the self-tempering temperature to be too high (gear quenching sensor with spray hole , The most prone to secondary maladies).

③The temperature of the quenching liquid is too high, the flow rate is reduced, the concentration changes, and the quenching liquid is mixed with oil stains.

④The spray hole is partially blocked, which is characterized by insufficient local hardness, and the soft block area often corresponds to the position of the spray hole blocked.