Quenching and tempering of 40Mn2 alloy rocker arm with mesh belt furnace
Mar. 02, 2022
Quenching and tempering of 40Mn2 alloy rocker arm with mesh belt furnace
Product Name: rocker arm
Material: 40Mn2 alloy
Requirements: quenching and tempering 201-230hb
Heat treatment equipment: jh802 + jh806 mesh belt furnace production line
Process: 30ml / min atmosphere protection for each route of methanol, 790 zone 2 zone 840 zone 3 zone 850 zone 4 zone 860 zone 5 zone 860 zone 6 zone 860 ℃, speed about 120 minutes (from furnace feeding to oil feeding time), 60-80 ℃ oil cooling, start stirring, after cleaning, 450 zone 2 Zone 600 zone 3 zone 700 zone 4 zone 700 ℃ tempering for 120 minutes.
1. Place the product evenly on the mesh belt and heat it in the furnace
2. After oil quenching, lift the lifting mesh belt of oil tank
3. Measure the hardness after quenching
4. After cleaning, enter the tempering mesh belt furnace for tempering
5. Air cooling after tempering
6. First take Rockwell test and then compare with Brinell test
7. Measure the hardness after tempering 201-230hb (4.0-4.25hbd) 14-20hrc
