Quenching and tempering of 20CrMo alloy inlet rocker arm with mesh belt furnace

Quenching and tempering of 20CrMo alloy inlet rocker arm with mesh belt furnace

Product Name: intake rocker arm

Material: 20CrMo alloy

Requirements: normalize 187-229hb, if the hardness cannot reach the standard, change the quenching and tempering

Heat treatment equipment: rcwf-120 mesh belt furnace

Process: methanol 10ml / min atmosphere protection, zone 1 750, zone 2 850, zone 3 860, zone 4 870, zone 5 880 ℃, speed about 90 minutes (from furnace feeding to oil feeding time), 60-80 ℃ oil cooling, after cleaning, zone 1 450, zone 2 660, zone 3 680 ℃ tempering for 120 minutes.

1. Place the rocker arm on the mesh belt and heat it in the furnace

2. Lift the hoist mesh belt after oil quenching

3. Measure the hardness after quenching

4. Enter the tempering mesh belt furnace for tempering after cleaning

5. Air cooling after tempering

6. Measure the hardness after tempering and normalize 187-229hb (11-21hrc)